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HomeMy WebLinkAboutAppendix B - Air Quality Impact AnalysisHemlock Warehouse Development Project Appendix City of Fontana Draft Subsequent EIR APPENDIX B: AIR QUALITY IMPACT ANALYSIS 11115 Hemlock Avenue AIR QUALITY IMPACT ANALYSIS CITY OF FONTANA PREPARED BY: Haseeb Qureshi hqureshi@urbanxroads.com Michael Tirohn mtirohn@urbanxroads.com MARCH 21, 2023 15100-03 AQ Report 11115 Hemlock Avenue Air Quality Impact Analysis 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report i TABLE OF CONTENTS TABLE OF CONTENTS ............................................................................................................................. I APPENDICES ......................................................................................................................................... II LIST OF EXHIBITS .................................................................................................................................. II LIST OF TABLES .................................................................................................................................... II LIST OF ABBREVIATED TERMS ............................................................................................................. IV EXECUTIVE SUMMARY ......................................................................................................................... 1 ES.1 Summary of Findings ..................................................................................................................... 1 ES.2 Regulatory Requirements ............................................................................................................. 1 ES.3 City of Fontana Industrial Commerce Centers Sustainability Ordinance ...................................... 3 ES.4 Southwest Industrial Park (SWIP) Specific Plan Mitigation Measures .......................................... 4 1 INTRODUCTION ........................................................................................................................... 7 1.1 Site Location .................................................................................................................................. 7 1.2 Project Description ........................................................................................................................ 7 2 AIR QUALITY SETTING ............................................................................................................... 11 2.1 South Coast Air Basin (SCAB) ...................................................................................................... 11 2.2 Regional Climate ......................................................................................................................... 11 2.3 Wind Patterns and Project Location ........................................................................................... 12 2.4 Criteria Pollutants ....................................................................................................................... 13 2.5 Existing Air Quality ...................................................................................................................... 20 2.6 Regional Air Quality .................................................................................................................... 23 2.7 Local Air Quality .......................................................................................................................... 23 2.8 Regulatory Background ............................................................................................................... 24 2.9 Regional Air Quality Improvement ............................................................................................. 28 3 PROJECT AIR QUALITY IMPACT .................................................................................................. 39 3.1 Introduction ................................................................................................................................ 39 3.2 Standards of Significance ............................................................................................................ 39 3.3 Models Employed To Analyze Air Quality ................................................................................... 40 3.4 Construction Emissions ............................................................................................................... 40 3.5 Operational Emissions ................................................................................................................ 43 3.6 Localized Significance .................................................................................................................. 48 3.7 Construction-Source Emissions LST Analysis .............................................................................. 54 3.8 Operational-Source Emissions LST Analysis ................................................................................ 55 3.9 CO “Hot Spot” Analysis ............................................................................................................... 56 3.10 AQMP .......................................................................................................................................... 59 3.11 Potential Impacts to Sensitive Receptors ................................................................................... 61 3.12 Odors ........................................................................................................................................... 62 3.13 Cumulative Impacts .................................................................................................................... 63 4 REFERENCES .............................................................................................................................. 66 5 CERTIFICATIONS ........................................................................................................................ 70 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report ii APPENDICES APPENDIX 2.1: STATE/FEDERAL ATTAINMENT STATUS OF CRITERIA POLLUTANTS APPENDIX 3.1: CALEEMOD EMISSIONS MODEL OUTPUTS APPENDIX 3.2: CALEEMOD OPERATIONAL LST EMISSIONS MODEL OUTPUTS APPENDIX 3.3: TRU CALCULATIONS APPENDIX 3.4: SCAQMD AMICUS BRIEF LIST OF EXHIBITS EXHIBIT 1-A: LOCATION MAP .............................................................................................................. 8 EXHIBIT 1-B: SITE PLAN........................................................................................................................ 9 EXHIBIT 2-A: DPM AND DIESEL VEHICLE MILES TREND ........................................................................ 36 EXHIBIT 3-A: SENSITIVE RECEPTOR LOCATIONS .................................................................................. 53 LIST OF TABLES TABLE ES-1: SUMMARY OF CEQA SIGNIFICANCE FINDINGS .................................................................. 1 TABLE 2-1: CRITERIA POLLUTANTS ..................................................................................................... 13 TABLE 2-2: AMBIENT AIR QUALITY STANDARDS (1 OF 2) .................................................................... 21 TABLE 2-2: AMBIENT AIR QUALITY STANDARDS (2 OF 2) .................................................................... 22 TABLE 2-3: ATTAINMENT STATUS OF CRITERIA POLLUTANTS IN THE SCAB ......................................... 23 TABLE 2-4: PROJECT AREA AIR QUALITY MONITORING SUMMARY 2019-2021 .................................... 24 TABLE 2-5: SCAB O3 TREND ................................................................................................................. 29 TABLE 2-6: SCAB AVERAGE 24-HOUR CONCENTRATION PM10 TREND (BASED ON FEDERAL STANDARD)1 ................................................................................................................................................. 30 TABLE 2-7: SCAB ANNUAL AVERAGE CONCENTRATION PM10 TREND (BASED ON STATE STANDARD)1 . 30 TABLE 2-8: SCAB 24-HOUR AVERAGE CONCENTRATION PM2.5 TREND (BASED ON FEDERAL STANDARD)1 ................................................................................................................................................. 31 TABLE 2-9: SCAB ANNUAL AVERAGE CONCENTRATION PM2.5 TREND (BASED ON STATE STANDARD)1 . 31 TABLE 2-10: SCAB 8-HOUR AVERAGE CONCENTRATION CO TREND1 ................................................... 33 TABLE 2-11: SCAB 1-HOUR AVERAGE CONCENTRATION NO2 TREND (BASED ON FEDERAL STANDARD) 34 TABLE 2-12: SCAB 1-HOUR AVERAGE CONCENTRATION NO2 TREND (BASED ON STATE STANDARD) ... 34 TABLE 3-1: MAXIMUM DAILY REGIONAL EMISSIONS THRESHOLDS ..................................................... 39 TABLE 3-2: CONSTRUCTION TRIP ASSUMPTIONS ................................................................................ 41 TABLE 3-3: CONSTRUCTION DURATION .............................................................................................. 41 TABLE 3-4: CONSTRUCTION EQUIPMENT ASSUMPTIONS .................................................................... 42 TABLE 3-5: OVERALL CONSTRUCTION EMISSIONS SUMMARY – WITHOUT MITIGATION ..................... 43 TABLE 3-6: PASSENGER CAR FLEET MIX .............................................................................................. 45 TABLE 3-7: TRUCK FLEET MIX ............................................................................................................. 45 TABLE 3-8: EMISSIONS FROM EXISTING DEVELOPMENT ..................................................................... 47 TABLE 3-9: SUMMARY OF PEAK OPERATIONAL EMISSIONS ................................................................ 48 TABLE 3-10: MAXIMUM DAILY DISTURBED-ACREAGE ......................................................................... 50 TABLE 3-11: MAXIMUM DAILY LOCALIZED CONSTRUCTION EMISSIONS THRESHOLDS ........................ 54 TABLE 3-12: LOCALIZED CONSTRUCTION-SOURCE EMISSIONS – WITHOUT MITIGATION ..................... 55 TABLE 3-13: MAXIMUM DAILY LOCALIZED OPERATIONAL EMISSIONS THRESHOLDS ........................... 56 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report iii TABLE 3-14: LOCALIZED SIGNIFICANCE SUMMARY OF OPERATIONS ................................................... 56 TABLE 3-14: CO MODEL RESULTS ........................................................................................................ 57 TABLE 3-15: TRAFFIC VOLUMES .......................................................................................................... 58 TABLE 3-16: PEAK HOUR TRAFFIC VOLUMES ...................................................................................... 58 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report iv LIST OF ABBREVIATED TERMS % Percent °F Degrees Fahrenheit (1) Reference µg/m3 Microgram per Cubic Meter 1992 CO Plan 1992 Federal Attainment Plan for Carbon Monoxide 1993 CEQA Handbook SCAQMD’s CEQA Air Quality Handbook (1993) 2016-2040 RTP/SCS 2016-2040 Regional Transportation Plan/Sustainable Communities Strategy AB 2595 California Clean Air Act ADA Americans with Disabilities Act AQIA Air Quality Impact Analysis AQMP Air Quality Management Plan BACT Best Available Control Technology BC Black Carbon Brief Brief of Amicus Curiae by the SCAQMD in the Friant Ranch Case C2Cl4 Perchloroethylene C4H6 1,3-butadiene C6H6 Benzene C2H3Cl Vinyl Chloride C2H4O Acetaldehyde CAA Federal Clean Air Act CAAQS California Ambient Air Quality Standards CalEEMod California Emissions Estimator Model CalEPA California Environmental Protection Agency CALGreen California Green Building Standards Code CAP Climate Action Plan CAPCOA California Air Pollution Control Officers Association CARB California Air Resources Board CCR California Code of Regulations CEC California Energy Commission CEQA California Environmental Quality Act CEQA Guidelines 2019 CEQA Statute and Guidelines CH2O Formaldehyde City City of Fontana CO Carbon Monoxide 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report v COH Coefficient of Haze COHb Carboxyhemoglobin Cr(VI) Chromium CTP Clean Truck Program DPM Diesel Particulate Matter DRRP Diesel Risk Reduction Plan EC Elemental Carbon EIR Environmental Impact Report EMFAC EMissions FACtor Model EPA Environmental Protection Agency ETW Equivalent Test Weight GHG Greenhouse Gas GVWR Gross Vehicle Weight Rating H2S Hydrogen Sulfide HDT Heavy Duty Trucks HHDT Heavy-Heavy-Duty Trucks HI Hazard Index hp Horsepower I-10 Interstate 10 lbs Pounds lbs/day Pounds Per Day LDA Light Duty Auto LDT1/LDT2 Light-Duty Trucks LHDT1/LHDT2 Light-Heavy-Duty Trucks LST Localized Significance Threshold LST Methodology Final Localized Significance Threshold Methodology MATES Multiple Air Toxics Exposure Study MCY Motorcycles MDV Medium-Duty Vehicles MHDT Medium-Heavy-Duty Trucks MICR Maximum Individual Cancer Risk MM Mitigation Measures mph Miles Per Hour MWELO California Department of Water Resources’ Model Water Efficient N2 Nitrogen N2O Nitrous Oxide NAAQS National Ambient Air Quality Standards 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report vi NO Nitric Oxide NO2 Nitrogen Dioxide NOX Nitrogen Oxides O2 Oxygen O3 Ozone O2 Deficiency Chronic Hypoxemia OBD-II On-Board Diagnostic ODC Ozone Depleting Compounds Pb Lead PM10 Particulate Matter 10 microns in diameter or less PM2.5 Particulate Matter 2.5 microns in diameter or less POLA Port of Los Angeles POLB Port of Long Beach ppm Parts Per Million Project 11115 Hemlock Avenue RECLAIM Regional Clean Air Incentives Market RFG-2 Reformulated Gasoline Regulation ROG Reactive Organic Gases SCAB South Coast Air Basin SCAG Southern California Association of Governments SCAQMD South Coast Air Quality Management District sf Square Feet SIPs State Implementation Plans SO2 Sulfur Dioxide SO4 Sulfates SOX Sulfur Oxides SoCalGas The Southern California Gas Company SRA Source Receptor Area SWIP Southwest Industrial Park TAC Toxic Air Contaminant TDM Transportation Demand Management Title 24 California Building Code TITLE I Non-Attainment Provisions TITLE II Mobile Sources Provisions UFP Ultrafine Particles VMT Vehicle Miles Traveled VOC Volatile Organic Compounds vph Vehicles Per Hour 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report vii This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 1 EXECUTIVE SUMMARY ES.1 SUMMARY OF FINDINGS The results of this 11115 Hemlock Avenue Air Quality Impact Analysis (AQIA) are summarized below based on the significance criteria in Section 3 of this report consistent with Appendix G of the California Environmental Quality Act (CEQA) Guidelines (CEQA Guidelines) (1). Table ES-1 shows the findings of significance for each potential air quality impact under CEQA before and after any required mitigation measures (MM) described below. TABLE ES-1: SUMMARY OF CEQA SIGNIFICANCE FINDINGS Analysis Report Section Significance Findings Unmitigated Mitigated Regional Construction Emissions 3.4 Less Than Significant n/a Localized Construction Emissions 3.7 Less Than Significant n/a Regional Operational Emissions 3.5 Potentially Significant Significant and Unavoidable Localized Operational Emissions 3.8 Less Than Significant n/a CO “Hot Spot” Analysis 3.9 Less Than Significant n/a Air Quality Management Plan 3.10 Potentially Significant Significant and Unavoidable Sensitive Receptors 3.11 Less Than Significant n/a Odors 3.12 Less Than Significant n/a Cumulative Impacts 3.13 Potentially Significant Significant and Unavoidable ES.2 REGULATORY REQUIREMENTS There are numerous requirements that development projects must comply with by law, and that were put in place by federal, State, and local regulatory agencies for the improvement of air quality. Any operation or activity that might cause the emission of any smoke, fly ash, dust, fumes, vapors, gases, or other forms of air pollution, which can cause damage to human health, vegetation, or 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 2 other forms of property, or can cause excessive soiling on any other parcel shall conform to the requirements of the South Coast Air Quality Management District (SCAQMD). SCAQMD RULES SCAQMD Rules that are currently applicable during construction activity for this Project are described below. SCAQMD RULE 402 A person shall not discharge from any source whatsoever such quantities of air contaminants or other material that cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or that endanger the comfort, repose, health, or safety of any such persons or the public, or that cause, or have a natural tendency to cause, injury or damage to business or property. The provisions of this rule do not apply to odors emanating from agricultural operations necessary for the growing of crops or the raising of fowl or animals. Odor Emissions. All uses shall be operated in a manner such that no offensive odor is perceptible at or beyond the property line of that use. SCAQMD RULE 403 This rule is intended to reduce the amount of particulate matter entrained in the ambient air as a result of anthropogenic (human-made) fugitive dust sources by requiring actions to prevent and reduce fugitive dust emissions. Rule 403 applies to any activity or human-made condition capable of generating fugitive dust and requires best available control measures to be applied to earth moving and grading activities. Dust Control, Operations. Any operation or activity that might cause the emission of any smoke, fly ash, dust, fumes, vapors, gases, or other forms of air pollution, which can cause damage to human health, vegetation, or other forms of property, or can cause excessive soiling on any other parcel, shall conform to the requirements of the South Coast Air Quality Management District. SCAQMD RULE 1113 This rule serves to limit the Volatile Organic Compound (VOC) content of architectural coatings used on projects in the SCAQMD. Any person who supplies, sells, offers for sale, or manufactures any architectural coating for use on projects. SCAQMD RULE 1301 This rule is intended to provide that pre-construction review requirements to ensure that new or relocated facilities do not interfere with progress in attainment of the National Ambient Air Quality Standards (NAAQS), while future economic growth within the SCAQMD is not unnecessarily restricted. The specific air quality goal is to achieve no net increases from new or modified permitted sources of nonattainment air contaminants or their precursors. Rule 1301 also limits emission increases of ammonia, and Ozone Depleting Compounds (ODCs) from new, modified or relocated facilities by requiring the use of Best Available Control Technology (BACT). 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 3 SCAQMD RULE 401 A person shall not discharge into the atmosphere from any single source of emission whatsoever any air contaminant for a period or periods aggregating more than three minutes in any 1 hour that is as dark or darker in shade as that designated No. 1 on the Ringelmann Chart, as published by the U.S. Bureau of Mines. SCAQMD RULE 2305 The SCAQMD adopted Rule 2305, the Warehouse Indirect Source Rule, on May 7, 2021. Owners and operators associated with warehouses 100,000 square feet (sf) or larger are required to directly reduce NOX and PM emissions, or to otherwise facilitate emission and exposure reductions of these pollutants in nearby communities. Although the Project would comply with the above regulatory requirements, it should be noted that emission reductions associated with Rules 402, 1301, 1401, and 2305 cannot be quantified in the California Emissions Estimator Model (CalEEMod) and are therefore not reflected in the emissions presented herein. Conversely, Rule 403 (Fugitive Dust) (2) and Rule 1113 (Architectural Coatings) (3) can be modeled in CalEEMod. As such, credit for Rule 403 and Rule 1113 have been taken in the analysis. ES.3 CITY OF FONTANA INDUSTRIAL COMMERCE CENTERS SUSTAINABILITY ORDINANCE On April 12, 2022, the City of Fontana approved a municipal code amendment to include new standards for industrial commerce projects that goes beyond current state and regional air quality regulations. The ordinance requires the following standards to be implemented for warehousing facilities within the City: • Posting of signage to restrict idling to no more than 3 minutes; • Facility operators are required to establish and enforce a truck routing plan and provide signs and pavement markings to clearly identify internal circulation patterns; • Install electrical outlets at all loading docks that serve Transportation Refrigeration Units (TRUs); • Install signage that clearly identifies the contact information for a facility representative as well as the SCAQMD; • Install buffering and screening between the facility and any adjacent sensitive receptors; • On-site motorized operational equipment shall be zero emission; • At least 10 percent (%) of all passenger vehicle parking spaces shall be EV ready; • Use of low VOC paints is required; • During construction, the highest rated California Air Resources Board (CARB) tier of construction equipment available shall be utilized; and • On buildings over 400,000 square feet, solar panels shall be installed and operated in such a manner that they will supply 100% of the power needed to operate all non-refrigerated portions of the facility including the parking areas. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 4 ES.4 SOUTHWEST INDUSTRIAL PARK (SWIP) SPECIFIC PLAN MITIGATION MEASURES The Project site is located within the SWIP Specific Plan planning area. As such, and unless otherwise noted, the Project is required to comply with the following applicable Southwest Industrial Park Specific Plan Environmental Impact Report mitigation measures (MMs). ES.4.1 CONSTRUCTION-SOURCE MMS Although the proposed Project would be required to comply with the applicable SWIP Specific Plan EIR MMs, the construction requirements under the City of Fontana Industrial Commerce Centers Sustainability Ordinance are generally more strict and have thus been incorporated into this analysis. ES.4.2 OPERATIONAL-SOURCE MMS For regional emissions, the Project has the potential to exceed the numerical thresholds of significance established by the SCAQMD for emissions of NOX. It is important to note that over 88% of the Project’s NOX emissions are derived from vehicle usage. Many of the following measures are designed to reduce overall operational-source emissions. However, it should be noted that there is no way to meaningfully quantify these reductions. Accordingly, emissions reductions resulting from implementation of operational-source mitigation measures are not quantified within this analysis. Furthermore, as the City of Fontana or the Project Applicant do not have regulatory authority to control tailpipe emissions, no feasible MMs beyond the measures identified exist that would reduce NOX emissions to levels that are less-than-significant, thus these emissions are considered significant and unavoidable. MM AQ-1 All “large-scale” (e.g., over 10 acres per day) project Applicants shall provide incentives to use mass transit including the placement of bus stop shelters along major thoroughfares if not so equipped. (City Staff shall determine what denotes a “large-scale” project.) MM AQ-2 All “large-scale” (e.g., over 10 acres per day) project Applicants shall incorporate a bike/walking path between these shelters, the proposed residential areas, and the proposed commercial areas. These paths shall be lit and configured so as to avoid potential conflict with roadways and railroad activities. MM AQ-3 All industrial and commercial facilities shall post signs requiring that trucks shall not be left idling for prolonged periods pursuant to Title 13 of the California Code of Regulations, Section 2485, which limits idle times to not more than five minutes. MM AQ-4 The City shall require that both industrial and commercial uses designate preferential parking for vanpools. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 5 MM AQ-5 The proposed commercial and industrial areas shall incorporate food service. MM AQ-6 All industrial and commercial site tenants with 50 or more employees shall be required to post both bus and MetroLink schedules in conspicuous areas. MM AQ-7 All industrial and commercial site tenants with 50 or more employees shall be requested to configure their operating schedules around the MetroLink schedule to the extent reasonably feasible. MM AQ-8 All residential, commercial, and industrial structures shall be required to incorporate light colored roofing materials. MM AQ-9 Prior to approval of future development projects within the project area, the City of Fontana shall conduct project-level environmental review to determine potential vehicle emission impacts associated with the project(s). Mitigation measures shall be developed for each project as it is considered to mitigate potentially significant impacts to the extent feasible. Potential mitigation measures may require that facilities with over 250 employees (full or part-time employees at a worksite for a consecutive six- month period calculated as a monthly average), as required by the Air Quality Management Plan, implement Transportation Demand Management (TDM) programs. MM AQ-10 New warehouse facilities or distribution centers that generate a minimum of 100 truck trips per day, or 40 truck trips with transport refrigeration units (TRUs) per day, or TRU operations exceeding 300 hours per week shall not be located closer than 1,000 feet from any existing or proposed sensitive land use such as residential, a hospital, medical offices, day care facilities, and/or fire stations (pursuant to the recommendations set forth in the CARB Air Quality and Land Use Handbook). 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 6 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 7 1 INTRODUCTION This report presents the results of the AQIA prepared by Urban Crossroads, Inc., for the proposed 11115 Hemlock Avenue (Project). The purpose of this AQIA is to evaluate the potential impacts to air quality associated with construction and operation of the Project and recommend measures to mitigate impacts considered potentially significant in comparison to thresholds established by the SCAQMD. 1.1 SITE LOCATION The proposed project is located south of Santa Ana Avenue and east of Hemlock Avenue in the City of Fontana as shown on Exhibit 1-A. 1.2 PROJECT DESCRIPTION The proposed Project consists of 661,506 square feet of warehousing use (75% of the total square footage) and 220,502 square feet of high-cube cold storage warehousing use (25% of the total square footage), for a total of 882,008 square feet as shown on Exhibit 1-B. The Project is anticipated to be constructed by the year 2024. The preliminary site plan for the proposed Project is shown on Exhibit 1-B. It is expected that the Project business operations would primarily be conducted within the enclosed buildings, except for traffic movement, parking, as well as loading and unloading of trucks at designated loading bays. This analysis includes a conservative assumption of on-site Project-related emission sources for potential future tenants, including architectural coatings, consumer products, landscape maintenance equipment, natural gas, electricity, and mobile operations. This analysis is intended to describe air quality impacts associated with the expected typical operational activities at the Project site. To present a conservative approach, this report assumes the Project would operate 24-hours daily for seven days per week. Per the 11115 Hemlock Avenue Traffic Analysis prepared by Urban Crossroads, Inc., the proposed Project expected to generate approximately 1,598 total trips per day which include 1,036 passenger car trips per day and 562 truck trips per day (4). 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 8 EXHIBIT 1-A: LOCATION MAP 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 9 EXHIBIT 1-B: SITE PLAN 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 10 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 11 2 AIR QUALITY SETTING This section provides an overview of the existing air quality conditions in the Project area and region. 2.1 SOUTH COAST AIR BASIN (SCAB) The Project site is located in the SCAB within the jurisdiction of SCAQMD (5). The SCAQMD was created by the 1977 Lewis-Presley Air Quality Management Act, which merged four county air pollution control bodies into one regional district. Under the Act, the SCAQMD is responsible for bringing air quality in areas under its jurisdiction into conformity with federal and state air quality standards. As previously stated, the Project site is located within the SCAB, a 6,745-square mile subregion of the SCAQMD, which includes portions of Los Angeles, Riverside, and San Bernardino Counties, and all of Orange County. The SCAB is bounded by the Pacific Ocean to the west and the San Gabriel, San Bernardino, and San Jacinto Mountains to the north and east. The Los Angeles County portion of the Mojave Desert Air Basin is bounded by the San Gabriel Mountains to the south and west, the Los Angeles / Kern County border to the north, and the Los Angeles / San Bernardino County border to the east. The Riverside County portion of the Salton Sea Air Basin is bounded by the San Jacinto Mountains in the west and spans eastward up to the Palo Verde Valley. 2.2 REGIONAL CLIMATE The regional climate has a substantial influence on air quality in the SCAB. In addition, the temperature, wind, humidity, precipitation, and amount of sunshine influence the air quality. The annual average temperatures throughout the SCAB vary from the low to middle 60s degrees Fahrenheit (°F). Due to a decreased marine influence, the eastern portion of the SCAB shows greater variability in average annual minimum and maximum temperatures. January is the coldest month throughout the SCAB, with average minimum temperatures of 47°F in downtown Los Angeles and 36°F in San Bernardino. All portions of the SCAB have recorded maximum temperatures above 100°F. Although the climate of the SCAB can be characterized as semi-arid, the air near the land surface is quite moist on most days because of the presence of a marine layer. This shallow layer of sea air is an important modifier of SCAB climate. Humidity restricts visibility in the SCAB, and the conversion of sulfur dioxide (SO2) to sulfates (SO4) is heightened in air with high relative humidity. The marine layer provides an environment for that conversion process, especially during the spring and summer months. The annual average relative humidity within the SCAB is 71% along the coast and 59% inland. Since the ocean effect is dominant, periods of heavy early morning fog are frequent and low stratus clouds are a characteristic feature. These effects decrease with distance from the coast. More than 90% of the SCAB’s rainfall occurs from November through April. The annual average rainfall varies from approximately nine inches in Riverside to fourteen inches in downtown Los 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 12 Angeles. Monthly and yearly rainfall totals are extremely variable. Summer rainfall usually consists of widely scattered thunderstorms near the coast and slightly heavier shower activity in the eastern portion of the SCAB with frequency being higher near the coast. Due to its generally clear weather, about three-quarters of available sunshine is received in the SCAB. The remaining one-quarter is absorbed by clouds. The ultraviolet portion of this abundant radiation is a key factor in photochemical reactions. On the shortest day of the year there are approximately 10 hours of possible sunshine, and on the longest day of the year there are approximately 14½ hours of possible sunshine. The importance of wind to air pollution is considerable. The direction and speed of the wind determines the horizontal dispersion and transport of the air pollutants. During the late autumn to early spring rainy season, the SCAB is subjected to wind flows associated with the traveling storms moving through the region from the northwest. This period also brings five to ten periods of strong, dry offshore winds, locally termed “Santa Anas” each year. During the dry season, which coincides with the months of maximum photochemical smog concentrations, the wind flow is bimodal, typified by a daytime onshore sea breeze and a nighttime offshore drainage wind. Summer wind flows are created by the pressure differences between the relatively cold ocean and the unevenly heated and cooled land surfaces that modify the general northwesterly wind circulation over southern California. Nighttime drainage begins with the radiational cooling of the mountain slopes. Heavy, cool air descends the slopes and flows through the mountain passes and canyons as it follows the lowering terrain toward the ocean. Another characteristic wind regime in the SCAB is the “Catalina Eddy,” a low level cyclonic (counterclockwise) flow centered over Santa Catalina Island which results in an offshore flow to the southwest. On most spring and summer days, some indication of an eddy is apparent in coastal sections. In the SCAB, there are two distinct temperature inversion structures that control vertical mixing of air pollution. During the summer, warm high-pressure descending (subsiding) air is undercut by a shallow layer of cool marine air. The boundary between these two layers of air is a persistent marine subsidence/inversion. This boundary prevents vertical mixing which effectively acts as an impervious lid to pollutants over the entire SCAB. The mixing height for the inversion structure is normally situated 1,000 to 1,500 feet above mean sea level. A second inversion-type forms in conjunction with the drainage of cool air off the surrounding mountains at night followed by the seaward drift of this pool of cool air. The top of this layer forms a sharp boundary with the warmer air aloft and creates nocturnal radiation inversions. These inversions occur primarily in the winter when nights are longer and onshore flow is weakest. They are typically only a few hundred feet above mean sea level. These inversions effectively trap pollutants, such as NOX and CO from vehicles, as the pool of cool air drifts seaward. Winter is therefore a period of high levels of primary pollutants along the coastline. 2.3 WIND PATTERNS AND PROJECT LOCATION The distinctive climate of the Project area and the SCAB is determined by its terrain and geographical location. The SCAB is located in a coastal plain with connecting broad valleys and 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 13 low hills, bounded by the Pacific Ocean in the southwest quadrant with high mountains forming the remainder of the perimeter. Wind patterns across the south coastal region are characterized by westerly and southwesterly onshore winds during the day and easterly or northeasterly breezes at night. Winds are characteristically light although the speed is somewhat greater during the dry summer months than during the rainy winter season. 2.4 CRITERIA POLLUTANTS Criteria pollutants are pollutants that are regulated through the development of human health based and/or environmentally based criteria for setting permissible levels. Criteria pollutants, their typical sources, and health effects are identified below (6): TABLE 2-1: CRITERIA POLLUTANTS Criteria Pollutant Description Sources Health Effects CO CO is a colorless, odorless gas produced by the incomplete combustion of carbon-containing fuels, such as gasoline or wood. CO concentrations tend to be the highest during the winter morning, when little to no wind and surface-based inversions trap the pollutant at ground levels. Because CO is emitted directly from internal combustion engines, unlike ozone (O3), motor vehicles operating at slow speeds are the primary source of CO in the SCAB. The highest ambient CO concentrations are generally found near congested transportation corridors and intersections. Any source that burns fuel such as automobiles, trucks, heavy construction equipment, farming equipment and residential heating. Individuals with a deficient blood supply to the heart are the most susceptible to the adverse effects of CO exposure. The effects observed include earlier onset of chest pain with exercise, and electrocardiograph changes indicative of decreased oxygen (O2) supply to the heart. Inhaled CO has no direct toxic effect on the lungs but exerts its effect on tissues by interfering with O2 transport and competing with O2 to combine with hemoglobin present in the blood to form carboxyhemoglobin (COHb). Hence, conditions with an increased demand for O2 supply can be adversely affected by exposure to CO. Individuals most at risk include fetuses, patients with diseases involving heart and blood vessels, and patients with chronic hypoxemia (O2 deficiency) as seen at high altitudes. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 14 Criteria Pollutant Description Sources Health Effects SO2 SO2 is a colorless, extremely irritating gas or liquid. It enters the atmosphere as a pollutant mainly as a result of burning high sulfur-content fuel oils and coal and from chemical processes occurring at chemical plants and refineries. When SO2 oxidizes in the atmosphere, it forms SO4. Collectively, these pollutants are referred to as sulfur oxides (SOX). Coal or oil burning power plants and industries, refineries, diesel engines A few minutes of exposure to low levels of SO2 can result in airway constriction in some asthmatics, all of whom are sensitive to its effects. In asthmatics, increase in resistance to air flow, as well as reduction in breathing capacity leading to severe breathing difficulties, are observed after acute exposure to SO2. In contrast, healthy individuals do not exhibit similar acute responses even after exposure to higher concentrations of SO2. Animal studies suggest that despite SO2 being a respiratory irritant, it does not cause substantial lung injury at ambient concentrations. However, very high levels of exposure can cause lung edema (fluid accumulation), lung tissue damage, and sloughing off of cells lining the respiratory tract. Some population-based studies indicate that the mortality and morbidity effects associated with fine particles show a similar association with ambient SO2 levels. In these studies, efforts to separate the effects of SO2 from those of fine particles have not been successful. It is not clear whether the two pollutants act synergistically, or one pollutant alone is the predominant factor. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 15 Criteria Pollutant Description Sources Health Effects NOX NOX consist of nitric oxide (NO), nitrogen dioxide (NO2) and nitrous oxide (N2O) and are formed when nitrogen (N2) combines with O2. Their lifespan in the atmosphere ranges from one to seven days for nitric oxide and nitrogen dioxide, to 170 years for nitrous oxide. NOX is typically created during combustion processes and are major contributors to smog formation and acid deposition. NO2 is a criteria air pollutant and may result in numerous adverse health effects; it absorbs blue light, resulting in a brownish-red cast to the atmosphere and reduced visibility. Of the seven types of NOX compounds, NO2 is the most abundant in the atmosphere. As ambient concentrations of NO2 are related to traffic density, commuters in heavy traffic may be exposed to higher concentrations of NO2 than those indicated by regional monitoring station. Any source that burns fuel such as automobiles, trucks, heavy construction equipment, farming equipment and residential heating. Population-based studies suggest that an increase in acute respiratory illness, including infections and respiratory symptoms in children (not infants), is associated with long-term exposure to NO2 at levels found in homes with gas stoves, which are higher than ambient levels found in Southern California. Increase in resistance to air flow and airway contraction is observed after short-term exposure to NO2 in healthy subjects. Larger decreases in lung functions are observed in individuals with asthma or chronic obstructive pulmonary disease (e.g., chronic bronchitis, emphysema) than in healthy individuals, indicating a greater susceptibility of these sub-groups. In animals, exposure to levels of NO2 considerably higher than ambient concentrations result in increased susceptibility to infections, possibly due to the observed changes in cells involved in maintaining immune functions. The severity of lung tissue damage associated with high levels of O3 exposure increases when animals are exposed to a combination of O3 and NO2. O3 O3 is a highly reactive and unstable gas that is formed when VOCs and NOX, both byproducts of internal combustion engine exhaust, undergo slow photochemical reactions in the presence of sunlight. O3 concentrations are generally highest during the summer Formed when reactive organic gases (ROG) and NOX react in the presence of sunlight. ROG sources include any source Individuals exercising outdoors, children, and people with preexisting lung disease, such as asthma and chronic pulmonary lung disease, are considered to be the most susceptible sub- groups for O3 effects. Short- term exposure (lasting for a 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 16 Criteria Pollutant Description Sources Health Effects months when direct sunlight, light wind, and warm temperature conditions are favorable to the formation of this pollutant. that burns fuels, (e.g., gasoline, natural gas, wood, oil) solvents, petroleum processing and storage and pesticides. few hours) to O3 at levels typically observed in Southern California can result in breathing pattern changes, reduction of breathing capacity, increased susceptibility to infections, inflammation of the lung tissue, and some immunological changes. Elevated O3 levels are associated with increased school absences. In recent years, a correlation between elevated ambient O3 levels and increases in daily hospital admission rates, as well as mortality, has also been reported. An increased risk for asthma has been found in children who participate in multiple outdoor sports and reside in communities with high O3 levels. O3 exposure under exercising conditions is known to increase the severity of the responses described above. Animal studies suggest that exposure to a combination of pollutants that includes O3 may be more toxic than exposure to O3 alone. Although lung volume and resistance changes observed after a single exposure diminish with repeated exposures, biochemical and cellular changes appear to persist, which can lead to subsequent lung structural changes. Particulate Matter PM10: A major air pollutant consisting of tiny solid or liquid particles of soot, dust, smoke, fumes, and aerosols. Particulate matter pollution is a major cause of reduce visibility (haze) which is caused by the scattering of light Sources of PM10 include road dust, windblown dust and construction. Also formed from other pollutants (acid rain, NOX, SOX, A consistent correlation between elevated ambient fine particulate matter (PM10 and PM2.5) levels and an increase in mortality rates, respiratory infections, number and severity of 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 17 Criteria Pollutant Description Sources Health Effects and consequently the significant reduction air clarity. The size of the particles (10 microns or smaller, about 0.0004 inches or less) allows them to easily enter the lungs where they may be deposited, resulting in adverse health effects. Additionally, it should be noted that PM10 is considered a criteria air pollutant. PM2.5: A similar air pollutant to PM10 consisting of tiny solid or liquid particles which are 2.5 microns or smaller (which is often referred to as fine particles). These particles are formed in the atmosphere from primary gaseous emissions that include SO4 formed from SO2 release from power plants and industrial facilities and nitrates that are formed from NOX release from power plants, automobiles, and other types of combustion sources. The chemical composition of fine particles highly depends on location, time of year, and weather conditions. PM2.5 is a criteria air pollutant. organics). Incomplete combustion of any fuel. PM2.5 comes from fuel combustion in motor vehicles, equipment, and industrial sources, residential and agricultural burning. Also formed from reaction of other pollutants (acid rain, NOX, SOX, organics). asthma attacks and the number of hospital admissions has been observed in different parts of the United States and various areas around the world. In recent years, some studies have reported an association between long-term exposure to air pollution dominated by fine particles and increased mortality, reduction in lifespan, and an increased mortality from lung cancer. Daily fluctuations in PM2.5 concentration levels have also been related to hospital admissions for acute respiratory conditions in children, to school and kindergarten absences, to a decrease in respiratory lung volumes in normal children, and to increased medication use in children and adults with asthma. Recent studies show lung function growth in children is reduced with long term exposure to particulate matter. The elderly, people with pre- existing respiratory or cardiovascular disease, and children appear to be more susceptible to the effects of high levels of PM10 and PM2.5. VOC VOCs are hydrocarbon compounds (any compound containing various combinations of hydrogen and carbon atoms) that exist in the ambient air. VOCs contribute to the formation of smog through atmospheric photochemical reactions and/or may be toxic. Compounds of carbon (also known as organic compounds) have different levels of reactivity; that is, they do not react at the same speed or do not Organic chemicals are widely used as ingredients in household products. Paints, varnishes, and wax all contain organic solvents, as do many cleaning, disinfecting, cosmetic, degreasing and hobby products. Breathing VOCs can irritate the eyes, nose, and throat, can cause difficulty breathing and nausea, and can damage the central nervous system as well as other organs. Some VOCs can cause cancer. Not all VOCs have all these health effects, though many have several. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 18 Criteria Pollutant Description Sources Health Effects form O3 to the same extent when exposed to photochemical processes. VOCs often have an odor, and some examples include gasoline, alcohol, and the solvents used in paints. Exceptions to the VOC designation include CO, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate. VOCs are a criteria pollutant since they are a precursor to O3, which is a criteria pollutant. The terms VOC and ROG (see below) interchangeably. Fuels are made up of organic chemicals. All of these products can release organic compounds while you are using them, and, to some degree, when they are stored. ROG Similar to VOC, ROGs are also precursors in forming O3 and consist of compounds containing methane, ethane, propane, butane, and longer chain hydrocarbons, which are typically the result of some type of combustion/decomposition process. Smog is formed when ROG and NOX react in the presence of sunlight. ROGs are a criteria pollutant since they are a precursor to O3, which is a criteria pollutant. The terms ROG and VOC (see previous) interchangeably. Sources similar to VOCs. Health effects similar to VOCs. Lead (Pb) Pb is a heavy metal that is highly persistent in the environment and is considered a criteria pollutant. In the past, the primary source of Pb in the air was emissions from vehicles burning leaded gasoline. The major sources of Pb emissions are ore and metals processing, particularly Pb smelters, and piston-engine aircraft operating on leaded aviation gasoline. Other stationary sources include waste incinerators, utilities, and lead-acid battery manufacturers. It should be noted that the Project does not include Metal smelters, resource recovery, leaded gasoline, deterioration of Pb paint. Fetuses, infants, and children are more sensitive than others to the adverse effects of Pb exposure. Exposure to low levels of Pb can adversely affect the development and function of the central nervous system, leading to learning disorders, distractibility, inability to follow simple commands, and lower intelligence quotient. In adults, increased Pb levels are associated with increased blood pressure. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 19 Criteria Pollutant Description Sources Health Effects operational activities such as metal processing or Pb acid battery manufacturing. As such, the Project is not anticipated to generate a quantifiable amount of Pb emissions. Pb poisoning can cause anemia, lethargy, seizures, and death; although it appears that there are no direct effects of Pb on the respiratory system. Pb can be stored in the bone from early age environmental exposure, and elevated blood Pb levels can occur due to breakdown of bone tissue during pregnancy, hyperthyroidism (increased secretion of hormones from the thyroid gland) and osteoporosis (breakdown of bony tissue). Fetuses and breast-fed babies can be exposed to higher levels of Pb because of previous environmental Pb exposure of their mothers. Odor Odor means the perception experienced by a person when one or more chemical substances in the air come into contact with the human olfactory nerves (7). Odors can come from many sources including animals, human activities, industry, natures, and vehicles. Offensive odors can potentially affect human health in several ways. First, odorant compounds can irritate the eye, nose, and throat, which can reduce respiratory volume. Second, studies have shown that the VOCs that cause odors can stimulate sensory nerves to cause neurochemical changes that might influence health, for instance, by compromising the immune system. Finally, unpleasant odors can trigger memories or attitudes linked to unpleasant odors, causing cognitive and emotional effects such as stress. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 20 2.5 EXISTING AIR QUALITY Existing air quality is measured at established SCAQMD air quality monitoring stations. Monitored air quality is evaluated in the context of ambient air quality standards. These standards are the levels of air quality that are considered safe, with an adequate margin of safety, to protect the public health and welfare. NAAQS and California Ambient Air Quality Standards (CAAQS) currently in effect are shown in Table 2-2 (8). The determination of whether a region’s air quality is healthful or unhealthful is determined by comparing contaminant levels in ambient air samples to the state and federal standards. At the time of this AQIA, the most recent state and federal standards were updated by CARB on May 4, 2016, as presented in Table 2-2. The air quality in a region is considered to be in attainment by the state if the measured ambient air pollutant levels for O3, CO (except 8-hour Lake Tahoe), SO2 (1 and 24 hour), NO2, PM10, and PM2.5 do not exceed standards. All others are not to be equaled or exceeded. It should be noted that the three-year period is presented for informational purposes and is not the basis for how the State assigns attainment status. Attainment status for a pollutant means that the SCAQMD meets the standards set by the EPA or the California EPA (CalEPA). Conversely, nonattainment means that an area has monitored air quality that does not meet the NAAQS or CAAQS standards. In order to improve air quality in nonattainment areas, CARB has implemented a State Implementation Plan (SIP). The SIP outlines the measures that the state will take to improve air quality. Once nonattainment areas meet the standards and additional redesignation requirements, the EPA will designate the area as a maintenance area (9). 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 21 TABLE 2-2: AMBIENT AIR QUALITY STANDARDS (1 OF 2) 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 22 TABLE 2-2: AMBIENT AIR QUALITY STANDARDS (2 OF 2) 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 23 2.6 REGIONAL AIR QUALITY Air pollution contributes to a wide variety of adverse health effects. The EPA has established NAAQS for six of the most common air pollutants: CO, Pb, O3, particulate matter (PM10 and PM2.5), NO2, and SO2 which are known as criteria pollutants. The SCAQMD monitors levels of various criteria pollutants at 37 permanent monitoring stations and 5 single-pollutant source Pb air monitoring sites throughout the air district (10). On December 28, 2021, CARB posted the proposed 2021 amendments to the state and national area designations. See Table 2-3 for attainment designations for the SCAB (11). Appendix 2.1 provides geographic representation of the state and federal attainment status for applicable criteria pollutants within the SCAB. TABLE 2-3: ATTAINMENT STATUS OF CRITERIA POLLUTANTS IN THE SCAB Criteria Pollutant State Designation Federal Designation O3 – 1-hour standard Nonattainment -- O3 – 8-hour standard Nonattainment Nonattainment PM10 Nonattainment Attainment PM2.5 Nonattainment Nonattainment CO Attainment Unclassifiable/Attainment NO2 Attainment Unclassifiable/Attainment SO2 Attainment Unclassifiable/Attainment Pb1 Attainment Unclassifiable/Attainment Note: See Appendix 2.1 for a detailed map of State/National Area Designations within the SCAB “-“ = The national 1-hour O3 standard was revoked effective June 15, 2005. 2.7 LOCAL AIR QUALITY The SCAQMD has designated general forecast areas and air monitoring areas (referred to as Source Receptor Areas [SRA]) throughout the district in order to provide Southern California residents about the air quality conditions. The Project site is located within the Central San Bernardino Valley 1 area (SRA 34). The Central San Bernardino Valley 1 monitoring station is located approximately 3.68 miles northwest of the Project site and reports air quality statistics for O3, CO, NO2, PM10, and PM2.5. The most recent three (3) years of data available is shown on Table 2-4 and identifies the number of days ambient air quality standards were exceeded for the study area, which is considered to be representative of the local air quality at the Development Site. Data for O3, CO, NO2, PM10, and PM2.5 for 2019 through 2021 was obtained from the SCAQMD Air Quality Data Tables (12). Additionally, data for SO2 has been omitted as attainment is regularly met in the SCAB and few monitoring stations measure SO2 concentrations. 1 The Federal nonattainment designation for lead is only applicable towards the Los Angeles County portion of the SCAB. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 24 TABLE 2-4: PROJECT AREA AIR QUALITY MONITORING SUMMARY 2019-2021 Pollutant Standard Year 2019 2020 2021 O3 Maximum Federal 1-Hour Concentration (ppm) 0.124 0.151 0.125 Maximum Federal 8-Hour Concentration (ppm) 0.109 0.111 0.103 Number of Days Exceeding State 1-Hour Standard > 0.09 ppm 41 56 44 Number of Days Exceeding State/Federal 8-Hour Standard > 0.070 ppm 67 89 81 CO Maximum Federal 1-Hour Concentration > 35 ppm 2.7 1.7 1.9 Maximum Federal 8-Hour Concentration > 20 ppm 1.0 1.2 1.4 NO2 Maximum Federal 1-Hour Concentration > 0.100 ppm 0.076 0.066 0.067 Annual Federal Standard Design Value 0.017 0.019 0.019 PM10 Maximum Federal 24-Hour Concentration (µg/m3) > 150 µg/m3 88 61 73 Annual Federal Arithmetic Mean (µg/m3) 34.8 35.8 32.1 Number of Days Exceeding Federal 24-Hour Standard > 150 µg/m3 0 0 0 Number of Days Exceeding State 24-Hour Standard > 50 µg/m3 12 6 4 PM2.5 Maximum Federal 24-Hour Concentration (µg/m3) > 35 µg/m3 46.50 46.10 55.10 Annual Federal Arithmetic Mean (µg/m3) > 12 µg/m3 10.84 11.95 12.07 Number of Days Exceeding Federal 24-Hour Standard > 35 µg/m3 2 1 2 ppm = Parts Per Million µg/m3 = Microgram per Cubic Meter Source: Data for O3, CO, NO2, PM10, and PM2.5 was obtained from SCAQMD Air Quality Data Tables. 2.8 REGULATORY BACKGROUND 2.8.1 FEDERAL REGULATIONS The EPA is responsible for setting and enforcing the NAAQS for O3, CO, NOX, SO2, PM10, and Pb (13). The EPA has jurisdiction over emissions sources that are under the authority of the federal government including aircraft, locomotives, and emissions sources outside state waters (Outer Continental Shelf). The EPA also establishes emission standards for vehicles sold in states other than California. Automobiles sold in California must meet the stricter emission requirements of CARB. The Federal Clean Air Act (CAA) was first enacted in 1955 and has been amended numerous times in subsequent years (1963, 1965, 1967, 1970, 1977, and 1990). The CAA establishes the federal air quality standards, the NAAQS, and specifies future dates for achieving compliance (14). The CAA also mandates that states submit and implement SIPs for local areas not meeting these 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 25 standards. These plans must include pollution control measures that demonstrate how the standards would be met. The 1990 amendments to the CAA that identify specific emission reduction goals for areas not meeting the NAAQS require a demonstration of reasonable further progress toward attainment and incorporate additional sanctions for failure to attain or to meet interim milestones. The sections of the CAA most directly applicable to the development of the Project site include Title I (Non-Attainment Provisions) and Title II (Mobile Source Provisions) (15) (16). Title I provisions were established with the goal of attaining the NAAQS for the following criteria pollutants O3, NO2, SO2, PM10, CO, PM2.5, and Pb. The NAAQS were amended in July 1997 to include an additional standard for O3 and to adopt a NAAQS for PM2.5. Table 2-3 (previously presented) provides the NAAQS within the SCAB. Mobile source emissions are regulated in accordance with Title II provisions. These provisions require the use of cleaner burning gasoline and other cleaner burning fuels such as methanol and natural gas. Automobile manufacturers are also required to reduce tailpipe emissions of hydrocarbons and NOX. NOX is a collective term that includes all forms of NOX which are emitted as byproducts of the combustion process. 2.8.2 CALIFORNIA REGULATIONS CARB CARB, which became part of the CalEPA in 1991, is responsible for ensuring implementation of the California Clean Air Act (AB 2595), responding to the federal CAA, and for regulating emissions from consumer products and motor vehicles. AB 2595 mandates achievement of the maximum degree of emissions reductions possible from vehicular and other mobile sources in order to attain the state ambient air quality standards by the earliest practical date. CARB established the CAAQS for all pollutants for which the federal government has NAAQS and, in addition, establishes standards for SO4, visibility, hydrogen sulfide (H2S), and vinyl chloride (C2H3Cl). However, at this time, H2S and C2H3Cl are not measured at any monitoring stations in the SCAB because they are not considered to be a regional air quality problem. Generally, the CAAQS are more stringent than the NAAQS (17) (13). Local air quality management districts, such as the SCAQMD, regulate air emissions from stationary sources such as commercial and industrial facilities. All air pollution control districts have been formally designated as attainment or non-attainment for each CAAQS. Serious non-attainment areas are required to prepare Air Quality Management Plans (AQMP) that include specified emission reduction strategies in an effort to meet clean air goals. These plans are required to include: • Application of Best Available Retrofit Control Technology to existing sources; • Developing control programs for area sources (e.g., architectural coatings and solvents) and indirect sources (e.g., motor vehicle use generated by residential and commercial development); • A District permitting system designed to allow no net increase in emissions from any new or modified permitted sources of emissions; 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 26 • Implementing reasonably available transportation control measures and assuring a substantial reduction in growth rate of vehicle trips and miles traveled; • Significant use of low emissions vehicles by fleet operators; • Sufficient control strategies to achieve a 5% or more annual reduction in emissions or 15% or more in a period of three years for ROGs, NOX, CO and PM10. However, air basins may use alternative emission reduction strategy that achieves a reduction of less than 5% per year under certain circumstances. TITLE 24 ENERGY EFFICIENCY STANDARDS AND CALIFORNIA GREEN BUILDING STANDARDS California Code of Regulations (CCR) Title 24 Part 6: The California Energy Code was first adopted in 1978 in response to a legislative mandate to reduce California’s energy consumption. The standards are updated periodically to allow consideration and possible incorporation of new energy efficient technologies and methods. CCR, Title 24, Part 11: California Green Building Standards Code (CALGreen) is a comprehensive and uniform regulatory code for all residential, commercial, and school buildings that went in effect on August 1, 2009, and is administered by the California Building Standards Commission. CALGreen is updated on a regular basis, with the most recent approved update consisting of the 2022 California Green Building Code Standards that went into effect on January 1, 2023. The CEC anticipates that the 2022 energy code will provide $1.5 billion in consumer benefits and reduce GHG emissions by 10 million metric tons (18). The Project would be required to comply with the applicable standards in place at the time building permit document submittals are made. These require, among other items (19): NONRESIDENTIAL MANDATORY MEASURES • Short-term bicycle parking. If the new project or an additional alteration is anticipated to generate visitor traffic, provide permanently anchored bicycle racks within 200 feet of the visitors’ entrance, readily visible to passers-by, for 5% of new visitor motorized vehicle parking spaces being added, with a minimum of one two-bike capacity rack (5.106.4.1.1). • Long-term bicycle parking. For new buildings with tenant spaces that have 10 or more tenant-occupants, provide secure bicycle parking for 5% of the tenant-occupant vehicular parking spaces with a minimum of one bicycle parking facility (5.106.4.1.2). • Designated parking for clean air vehicles. In new projects or additions to alterations that add 10 or more vehicular parking spaces, provide designated parking for any combination of low-emitting, fuel-efficient and carpool/van pool vehicles as shown in Table 5.106.5.2 (5.106.5.2). • EV charging stations. New construction shall facilitate the future installation of EV supply equipment. The compliance requires empty raceways for future conduit and documentation that the electrical system has adequate capacity for the future load. The number of spaces to be provided for is contained in Table 5.106. 5.3.3 (5.106.5.3). Additionally, Table 5.106.5.4.1 specifies requirements for the installation of raceway conduit and panel power requirements for medium- and heavy-duty electric vehicle supply equipment for warehouses, grocery stores, and retail stores. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 27 • Outdoor light pollution reduction. Outdoor lighting systems shall be designed to meet the backlight, uplight and glare ratings per Table 5.106.8 (5.106.8). • Construction waste management. Recycle and/or salvage for reuse a minimum of 65% of the nonhazardous construction and demolition waste in accordance with Section 5.408.1.1. 5.405.1.2, or 5.408.1.3; or meet a local construction and demolition waste management ordinance, whichever is more stringent (5.408.1). • Excavated soil and land clearing debris. 100% of trees, stumps, rocks and associated vegetation and soils resulting primarily from land clearing shall be reuse or recycled. For a phased project, such material may be stockpiled on site until the storage site is developed (5.408.3). • Recycling by Occupants. Provide readily accessible areas that serve the entire building and are identified for the depositing, storage, and collection of non-hazardous materials for recycling, including (at a minimum) paper, corrugated cardboard, glass, plastics, organic waste, and metals or meet a lawfully enacted local recycling ordinance, if more restrictive (5.410.1). • Water conserving plumbing fixtures and fittings. Plumbing fixtures (water closets and urinals) and fittings (faucets and showerheads) shall comply with the following: o Water Closets. The effective flush volume of all water closets shall not exceed 1.28 gallons per flush (5.303.3.1) o Urinals. The effective flush volume of wall-mounted urinals shall not exceed 0.125 gallons per flush (5.303.3.2.1). The effective flush volume of floor- mounted or other urinals shall not exceed 0.5 gallons per flush (5.303.3.2.2). o Showerheads. Single showerheads shall have a minimum flow rate of not more than 1.8 gallons per minute and 80 psi (5.303.3.3.1). When a shower is served by more than one showerhead, the combine flow rate of all showerheads and/or other shower outlets controlled by a single valve shall not exceed 1.8 gallons per minute at 80 psi (5.303.3.3.2). o Faucets and fountains. Nonresidential lavatory faucets shall have a maximum flow rate of not more than 0.5 gallons per minute at 60 psi (5.303.3.4.1). Kitchen faucets shall have a maximum flow rate of not more than 1.8 gallons per minute of 60 psi (5.303.3.4.2). Wash fountains shall have a maximum flow rate of not more than 1.8 gallons per minute (5.303.3.4.3). Metering faucets shall not deliver more than 0.20 gallons per cycle (5.303.3.4.4). Metering faucets for wash fountains shall have a maximum flow rate not more than 0.20 gallons per cycle (5.303.3.4.5). • Outdoor potable water uses in landscaped areas. Nonresidential developments shall comply with a local water efficient landscape ordinance or the current California Department of Water Resources’ Model Water Efficient Landscape Ordinance (MWELO), whichever is more stringent (5.304.1). • Water meters. Separate submeters or metering devices shall be installed for new buildings or additions in excess of 50,000 sf or for excess consumption where any tenant within a new building or within an addition that is project to consume more than 1,000 gallons per day (GPD) (5.303.1.1 and 5.303.1.2). • Outdoor water uses in rehabilitated landscape projects equal or greater than 2,500 sf. Rehabilitated landscape projects with an aggregate landscape area equal to or greater than 2,500 sf requiring a building or landscape permit (5.304.3). 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 28 • Commissioning. For new buildings 10,000 sf and over, building commissioning shall be included in the design and construction processes of the building project to verify that the building systems and components meet the owner’s or owner representative’s project requirements (5.410.2). 2.8.3 AQMP Currently, the NAAQS and CAAQS are exceeded in most parts of the SCAB. In response, the SCAQMD has adopted a series of AQMP to meet the state and federal ambient air quality standards (20). AQMPs are updated regularly to ensure an effective reduction in emissions, accommodate growth, and to minimize any negative fiscal impacts of air pollution control on the economy. A detailed discussion on the AQMP and Project consistency with the AQMP is provided in Section 3.10. 2.9 REGIONAL AIR QUALITY IMPROVEMENT The Project is within the jurisdiction of the SCAQMD. In 1976, California adopted the Lewis Air Quality Management Act which created SCAQMD from a voluntary association of air pollution control districts in Los Angeles, Orange, Riverside, and San Bernardino counties. The geographic area of which SCAQMD consists of is known as the SCAB. SCAQMD develops comprehensive plans and regulatory programs for the region to attain federal standards by dates specified in federal law. The agency is also responsible for meeting state standards by the earliest date achievable, using reasonably available control measures. SCAQMD rule development through the 1970s and 1980s resulted in dramatic improvement in SCAB air quality. Nearly all control programs developed through the early 1990s relied on (i) the development and application of cleaner technology; (ii) add-on emission controls, and (iii) uniform CEQA review throughout the SCAB. Industrial emission sources have been significantly reduced by this approach and vehicular emissions have been reduced by technologies implemented at the state level by CARB. As discussed above, the SCAQMD is the lead agency charged with regulating air quality emission reductions for the entire SCAB. SCAQMD created AQMPs which represent a regional blueprint for achieving healthful air on behalf of the 16 million residents of the SCAB. The 2012 AQMP states, “the remarkable historical improvement in air quality since the 1970’s is the direct result of Southern California’s comprehensive, multiyear strategy of reducing air pollution from all sources as outlined in its AQMPs,” (21). Emissions of O3, NOX, VOC, and CO have been decreasing in the SCAB since 1975 and are projected to continue to decrease through 2020 (22). These decreases result primarily from motor vehicle controls and reductions in evaporative emissions. Although vehicle miles traveled (VMT) in the SCAB continue to increase, NOX and VOC levels are decreasing because of the mandated controls on motor vehicles and the replacement of older polluting vehicles with lower- emitting vehicles. NOX emissions from electric utilities have also decreased due to use of cleaner fuels and renewable energy. O3 contour maps show that the number of days exceeding the 8- hour NAAQS has generally decreased between 1980 and 2020. For 2020, there was an overall decrease in exceedance days compared with the 1980 period. However, as shown on Table 2-5, O3 levels have increased in the past three years due to higher temperatures and stagnant weather 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 29 conditions. Notwithstanding, O3 levels in the SCAB have decreased substantially over the last 30 years with the current maximum measured concentrations being approximately one-third of concentrations within the late 70’s (23). TABLE 2-5: SCAB O3 TREND Source: 2020 SCAQMD, Historical O3 Air Quality Trends (1976-2019) The overall trends of PM10 and PM2.5 levels in the air (not emissions) show an overall improvement since 1975. Direct emissions of PM10 have remained somewhat constant in the SCAB and direct emissions of PM2.5 have decreased slightly since 1975. Area wide sources (fugitive dust from roads, dust from construction, and other sources) contribute the greatest amount of direct particulate matter emissions. As with other pollutants, the most recent PM10 statistics show an overall improvement as illustrated in Tables 2-6 and 2-7. During the period for which data are available, the 24-hour national annual average concentration for PM10 decreased by approximately 46%, from 103.7 microgram per cubic meter (µg/m³) in 1988 to 55.5 µg/m³ in 2020 (24). Although the values are below the federal standard, it should be noted that there are days within the year where the concentrations would exceed the threshold. The 24-hour state annual average for emissions for PM10, have decreased by approximately 64%, from 93.9 µg/m³ in 1989 to 33.9 µg/m³ in 2020 (24). Although data in the late 1990’s show some variability, this is probably due to the advances in meteorological science rather than a change in emissions. Similar to the ambient 0 25 50 75 100 125 150 175 200 225 250 Basin Days Exceeding YEAR 1-Hour Stage 1 Episode 1-Hour Health Advisory 1979 1-Hour NAAQS 1997 8-Hour NAAQS 2008 8-Hour NAAQS 2015 8-Hour NAAQS 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 30 concentrations, the calculated number of days above the 24-hour PM10 standards has also shown an overall drop. TABLE 2-6: SCAB AVERAGE 24-HOUR CONCENTRATION PM10 TREND (BASED ON FEDERAL STANDARD)1 Source: 2020 CARB, iADAM: Top Four Summary: PM10 24-Hour Averages (1988-2020) 1 Some years have been omitted from the table as insufficient data (or no) data has been reported. Years with reported value of “0” have also been omitted. TABLE 2-7: SCAB ANNUAL AVERAGE CONCENTRATION PM10 TREND (BASED ON STATE STANDARD)1 Source: 2020 CARB, iADAM: Top Four Summary: PM10 24-Hour Averages (1988-2020) 1 Some years have been omitted from the table as insufficient data (or no) data has been reported. Years with reported value of “0” have also been omitted. Tables 2-8 and 2-9 shows the most recent 24-hour average PM2.5 concentrations in the SCAB from 1999 through 2020. Overall, the national and state annual average concentrations have 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 31 decreased by almost 50% and 31% respectively (24). It should be noted that the SCAB is currently designated as nonattainment for the state and federal PM2.5 standards. TABLE 2-8: SCAB 24-HOUR AVERAGE CONCENTRATION PM2.5 TREND (BASED ON FEDERAL STANDARD)1 Source: 2020 CARB, iADAM: Top Four Summary: PM2.5 24-Hour Averages (1999-2020) 1 Some years have been omitted from the table as insufficient data (or no) data has been reported. Years with reported value of “0” have also been omitted. TABLE 2-9: SCAB ANNUAL AVERAGE CONCENTRATION PM2.5 TREND (BASED ON STATE STANDARD)1 Source: 2020 CARB, iADAM: Top Four Summary: PM2.5 24-Hour Averages (1999-2020) 1 Some years have been omitted from the table as insufficient data (or no) data has been reported. Years with reported value of “0” have also been omitted. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 32 While the 2012 AQMP PM10 attainment demonstration and the 2015 associated supplemental SIP submission indicated that attainment of the 24-hour standard was predicted to occur by the end of 2015, it could not anticipate the effect of the ongoing drought on the measured PM2.5. The 2006 to 2010 base period used for the 2012 attainment demonstration had near-normal rainfall. While the trend of PM2.5-equivalent emission reductions continued through 2015, the severe drought conditions contributed to the PM2.5 increases observed after 2012. As a result of the disrupted progress toward attainment of the federal 24-hour PM2.5 standard, SCAQMD submitted a request and the EPA approved, in January 2016, a “bump up” to the nonattainment classification from “moderate” to “serious,” with a new attainment deadline as soon as practicable, but not beyond December 31, 2019. As of March 14, 2019, the EPA approved portions of a SIP revision submitted by California to address CAA requirements for the 2006 24- hour PM2.5 NAAQS in the Los Angeles-SCAB Serious PM2.5 nonattainment area. The EPA also approved 2017 and 2019 motor vehicle emissions budgets for transportation conformity purposes and inter-pollutant trading ratios for use in transportation conformity analyses (25). In March 2017, the SCAQMD released the Final 2016 AQMP. The 2016 AQMP continues to evaluate current integrated strategies and control measures to meet the NAAQS, as well as explore new and innovative methods to reach its goals. Some of these approaches include utilizing incentive programs, recognizing existing co-benefit programs from other sectors, and developing a strategy with fair-share reductions at the federal, state, and local levels (26). Similar to the 2012 AQMP, the 2016 AQMP incorporates scientific and technological information and planning assumptions, including the 2016-2040 Regional Transportation Plan/Sustainable Communities Strategy (2016-2040 RTP/SCS) and updated emission inventory methodologies for various source categories (20). The 2022 AQMP is currently being developed by SCAQMD to address the EPA’s strengthened ozone standard. The draft 2022 AQMP was released in May 2022 and is currently open for public comment. Development of the 2022 AQMP is in its early stages and no formal timeline for completion and adoption of the final document is currently known. The most recent CO concentrations in the SCAB are shown in Table 2-10 (24). CO concentrations in the SCAB have decreased markedly — a total decrease of more about 80% in the peak 8-hour concentration from 1986 to 2012. It should be noted 2012 is the most recent year where 8-hour CO averages and related statistics are available in the SCAB. The number of exceedance days has also declined. The entire SCAB is now designated as attainment for both the state and national CO standards. Ongoing reductions from motor vehicle control programs should continue the downward trend in ambient CO concentrations. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 33 TABLE 2-10: SCAB 8-HOUR AVERAGE CONCENTRATION CO TREND1 Source: 2020 CARB, iADAM: Top Four Summary: CO 8-Hour Averages (1986-2012) 1 The most recent year where 8-hour concentration data is available is 2012. Part of the control process of the SCAQMD’s duty to greatly improve the air quality in the SCAB is the uniform CEQA review procedures required by SCAQMD’s CEQA Air Quality Handbook (1993) (1993 CEQA Handbook) (27). The single threshold of significance used to assess Project direct and cumulative impacts has in fact “worked” as evidenced by the track record of the air quality in the SCAB dramatically improving over the course of the past decades. As stated by the SCAQMD, the District’s thresholds of significance are based on factual and scientific data and are therefore appropriate thresholds of significance to use for this Project. The most recent NO2 data for the SCAB is shown in Tables 2-11 and 2-12 (24). Over the last 50 years, NO2 values have decreased significantly; the peak 1-hour national and state averages for 2020 is approximately 80% lower than what it was during 1963. The SCAB attained the State 1- hour NO2 standard in 1994, bringing the entire state into attainment. A new state annual average standard of 0.030 ppm was adopted by CARB in February 2007 (28). The new standard is just barely exceeded in the SCAQMD. NO2 is formed from NOX emissions, which also contribute to O3. As a result, the majority of the future emission control measures would be implemented as part of the overall O3 control strategy. Many of these control measures would target mobile sources, which account for more than three-quarters of California’s NOX emissions. These measures are expected to bring the SCAQMD into attainment of the state annual average standard. 0.00 5.00 10.00 15.00 20.00 25.00 30.00 CO (ppm)Year Maximum 8-hour CO Averages 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 34 TABLE 2-11: SCAB 1-HOUR AVERAGE CONCENTRATION NO2 TREND (BASED ON FEDERAL STANDARD) Source: 2020 CARB, iADAM: Top Four Summary: CO 1-Hour Averages (1963-2020) TABLE 2-12: SCAB 1-HOUR AVERAGE CONCENTRATION NO2 TREND (BASED ON STATE STANDARD) Source: 2020 CARB, iADAM: Top Four Summary: CO 1-Hour Averages (1963-2020) 2.9.1 TOXIC AIR CONTAMINANTS (TAC) TRENDS In 1984, as a result of public concern for exposure to airborne carcinogens, CARB adopted regulations to reduce the amount of TAC emissions resulting from mobile and area sources, such as cars, trucks, stationary sources, and consumer products. According to the Ambient and Emission Trends of Toxic Air Contaminants in California journal article (29) which was prepared for CARB, results show that between 1990-2012, ambient concentration and emission trends for 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 35 the seven TACs responsible for most of the known cancer risk associated with airborne exposure in California have declined significantly (between 1990 and 2012). The seven TACs studied include those that are derived from mobile sources: diesel particulate matter (DPM), benzene (C6H6), and 1,3-butadiene (C4H6); those that are derived from stationary sources: perchloroethylene (C2Cl4) and hexavalent chromium (Cr(VI)); and those derived from photochemical reactions of emitted VOCs: formaldehyde (CH2O) and acetaldehyde (C2H4O)2. The decline in ambient concentration and emission trends of these TACs are a result of various regulations CARB has implemented to address cancer risk. MOBILE SOURCE TACS CARB introduced two programs that aimed at reducing mobile emissions for light and medium duty vehicles through vehicle emissions controls and cleaner fuel. In California, light-duty vehicles sold after 1996 are equipped with California’s second-generation On-Board Diagnostic (OBD-II) system. The OBD-II system monitors virtually every component that can affect the emission performance of the vehicle to ensure that the vehicle remains as clean as possible over its entire life and assists repair technicians in diagnosing and fixing problems with the computerized engine controls. If a problem is detected, the OBD-II system illuminates a warning lamp on the vehicle instrument panel to alert the driver. This warning lamp typically contains the phrase “Check Engine” or “Service Engine Soon.” The system would also store important information about the detected malfunction so that a repair technician can accurately find and fix the problem. CARB has recently developed similar OBD requirements for heavy-duty vehicles over 14,000 pounds (lbs). CARB’s phase II Reformulated Gasoline Regulation (RFG-2), adopted in 1996, also led to a reduction of mobile source emissions. Through such regulations, benzene levels declined 88% from 1990-2012. 1,3-Butadiene concentrations also declined 85% from 1990-2012 as a result of the use of reformulated gasoline and motor vehicle regulations (29). In 2000, CARB’s Diesel Risk Reduction Plan (DRRP) recommended the replacement and retrofit of diesel-fueled engines and the use of ultra-low-sulfur (<15 ppm) diesel fuel. As a result of these measures, DPM concentrations have declined 68% since 2000, even though the state’s population increased 31% and the amount of diesel vehicles miles traveled increased 81%, as shown on Exhibit 2-B. With the implementation of these diesel-related control regulations, CARB expects a DPM decline of 71% for 2000-2020. 2 It should be noted that ambient DPM concentrations are not measured directly. Rather, a surrogate method using the coefficient of haze (COH) and elemental carbon (EC) is used to estimate DPM concentrations. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 36 EXHIBIT 2-A: DPM AND DIESEL VEHICLE MILES TREND Source: 2020 CARB DIESEL REGULATIONS CARB and the Ports of Los Angeles and Long Beach (POLA and POLB) have adopted several iterations of regulations for diesel trucks that are aimed at reducing DPM. More specifically, CARB Drayage Truck Regulation (30), CARB statewide On-road Truck and Bus Regulation (31), and the Ports of Los Angeles and Long Beach Clean Truck Program (CTP) require accelerated implementation of “clean trucks” into the statewide truck fleet (32). In other words, older more polluting trucks would be replaced with newer, cleaner trucks as a function of these regulatory requirements. Moreover, the average statewide DPM emissions for Heavy Duty Trucks (HDT), in terms of grams of DPM generated per mile traveled, would dramatically be reduced due to the aforementioned regulatory requirements. Diesel emissions identified in this analysis would therefore overstate future DPM emissions since not all the regulatory requirements are reflected in the modeling. CANCER RISK TRENDS Based on information available from CARB, overall cancer risk throughout the SCAB has had a declining trend since 1990. In 1998, following an exhaustive 10-year scientific assessment process, CARB identified particulate matter from diesel-fueled engines as a toxic air contaminant. The SCAQMD initiated a comprehensive urban toxic air pollution study called the Multiple Air Toxics Exposure Study (MATES). DPM accounts for more than 70% of the cancer risk. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 37 In January 2018, as part of the overall effort to reduce air toxics exposure in the SCAB, SCAQMD began conducting the MATES V Program. MATES V field measurements were conducted at ten fixed sites (the same sites selected for MATES III and IV) to assess trends in air toxics levels. MATES V also included measurements of ultrafine particles (UFP) and black carbon (BC) concentrations, which can be compared to the UFP levels measured in MATES IV (33). The draft report for the MATES V study was published in late May and the comment submission deadline on June 7, 2021. In addition to new measurements and updated modeling results, several key updates were implemented in MATES V. First, MATES V estimates cancer risks by taking into account multiple exposure pathways, which includes inhalation and non-inhalation pathways. This approach is consistent with how cancer risks are estimated in South Coast AQMD’s programs such as permitting, Air Toxics Hot Spots (AB2588), and CEQA. Previous MATES studies quantified the cancer risks based on the inhalation pathway only. Second, along with cancer risk estimates, MATES V includes information on the chronic non-cancer risks from inhalation and non- inhalation pathways for the first time. Cancer risks and chronic non-cancer risks from MATES II through IV measurements have been re-examined using current Office of Environmental Health Hazard Assessment (OEHHA) and CalEPA risk assessment methodologies and modern statistical methods to examine the trends over time (34). MATES-V calculated cancer risks based on monitoring data collected at ten fixed sites within the SCAB. None of the fixed monitoring sites are within the local area of the Project site. However, MATES-V has extrapolated the excess cancer risk levels throughout the SCAB by modeling the specific grids. The Project is located within a quadrant of the geographic grid of the MATES-V model which predicted a cancer risk of 472 in one million for the area containing the Project site. DPM is included in this cancer risk along with all other TAC sources. As in previous MATES iterations, diesel PM is the largest contributor to overall air toxics cancer risk. However, the average levels of diesel PM in MATES V are 53% lower at the 10 monitoring sites compared to MATES IV. Cumulative Project generated TACs are limited to DPM. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 38 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 39 3 PROJECT AIR QUALITY IMPACT 3.1 INTRODUCTION This study quantifies air quality emissions generated by construction and operation of the Project and addresses whether the Project conflicts with implementation of the SCAQMD’s AQMP and Lead Agency planning regulations. The analysis of Project-generated air emissions determines whether the Project would result in a cumulatively considerable net increase of any criteria pollutant for which the SCAB is in non-attainment under an applicable NAAQS and CAAQS. Additionally, the Project has been evaluated to determine whether the Project would expose sensitive receptors to substantial pollutant concentrations and the impacts of odors. The significance of these potential impacts is described in the following sections. 3.2 STANDARDS OF SIGNIFICANCE The criteria used to determine the significance of potential Project-related air quality impacts are taken from the CEQA Guidelines (14 CCR §§15000, et seq.). Based on these thresholds, a project would result in a significant impact related to air quality if it would (1): • Conflict with or obstruct implementation of the applicable air quality plan. • Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is in non-attainment under an applicable federal or state ambient air quality standard. • Expose sensitive receptors to substantial pollutant concentrations. • Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people. The SCAQMD has also developed regional significance thresholds for other regulated pollutants, as summarized at Table 3-1 (35). The SCAQMD’s CEQA Air Quality Significance Thresholds (April 2019) indicate that any projects in the SCAB with daily emissions that exceed any of the indicated thresholds should be considered as having an individually and cumulatively significant air quality impact. TABLE 3-1: MAXIMUM DAILY REGIONAL EMISSIONS THRESHOLDS Pollutant Regional Construction Threshold Regional Operational Thresholds NOX 100 lbs/day 55 lbs/day VOC 75 lbs/day 55 lbs/day PM10 150 lbs/day 150 lbs/day PM2.5 55 lbs/day 55 lbs/day SOX 150 lbs/day 150 lbs/day CO 550 lbs/day 550 lbs/day Pb 3 lbs/day 3 lbs/day lbs/day = Pounds Per Day 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 40 3.3 MODELS EMPLOYED TO ANALYZE AIR QUALITY 3.3.1 CALEEMOD Land uses such as the Project affect air quality through construction-source and operational- source emissions. In May 2022 California Air Pollution Control Officers Association (CAPCOA) in conjunction with other California air districts, including SCAQMD, released the latest version of CalEEMod version 2022.1. The purpose of this model is to calculate construction-source and operational-source criteria pollutant (VOCs, NOX, SOX, CO, PM10, and PM2.5) and GHG emissions from direct and indirect sources; and quantify applicable air quality and GHG reductions achieved from MMs (36). Accordingly, the latest version of CalEEMod has been used for this Project to determine construction and operational air quality emissions. Output from the model runs for both construction and operational activity are provided in Appendices 3.1 through 3.2. 3.4 CONSTRUCTION EMISSIONS Construction activities associated with the Project will result in emissions of VOCs, NOX, SOX, CO, PM10, and PM2.5. Construction related emissions are expected from the following construction activities: • Demolition • Site Preparation • Grading • Building Construction • Paving • Architectural Coating DEMOLITION ACTIVITIES The site is currently developed with existing light industrial uses which total approximately 11,590 sf of building space and 200,436 sf of concrete and asphalt concrete that will be demolished. Demolished material associated with demolition will be hauled off-site. GRADING ACTIVITIES Dust is typically a major concern during grading activities. Because such emissions are not amenable to collection and discharge through a controlled source, they are called “fugitive emissions”. Fugitive dust emissions rates vary as a function of many parameters (soil silt, soil moisture, wind speed, area disturbed, number of vehicles, depth of disturbance or excavation, etc.). CalEEMod was utilized to calculate fugitive dust emissions resulting from this phase of activity. Per client provided data, this analysis assumes that approximately 6,000 cubic yards (CY) of soil import would be required. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 41 ON-ROAD TRIPS Construction generates on-road vehicle emissions from vehicle usage for workers, hauling, and vendors commuting to and from the site. The number of workers, hauling, and vendor trips are presented below in Table 3-2. It should be noted that for Vendor Trips, specifically, CalEEMod only assigns Vendor Trips to the Building Construction phase. Vendor trips would likely occur during all phases of construction. As such, the CalEEMod defaults for Vendor Trips have been adjusted based on a ratio of the total vendor trips to the number of days of each subphase of activity. TABLE 3-2: CONSTRUCTION TRIP ASSUMPTIONS Construction Activity Worker Trips Per Day Vendor Trips Per Day Hauling Trips Per Day Demolition 15 53 41 Site Preparation 18 13 0 Grading 20 26 25 Building Construction 599 234 0 Paving 15 0 0 Architectural Coating 120 0 0 3.4.1 CONSTRUCTION DURATION Construction is anticipated to begin in October 2023 and will last through December 2024. The construction schedule utilized in the analysis, shown in Table 3-3, represents a “worst-case” analysis scenario should construction occur any time after the respective dates since emission factors for construction decrease as time passes and the analysis year increases due to emission regulations becoming more stringent3. The duration of construction activity and associated equipment represents a reasonable approximation of the expected construction fleet as required per CEQA Guidelines (1). TABLE 3-3: CONSTRUCTION DURATION Construction Activity Start Date End Date Days Demolition 10/1/2023 12/24/2023 60 Site Preparation 12/25/2023 1/12/2024 15 Grading 1/13/2024 2/23/2024 30 Building Construction 2/24/2024 12/31/2024 222 Paving 11/20/2024 12/31/2024 30 Architectural Coating 12/4/2024 12/31/2024 20 3 As shown in the CalEEMod User’s Guide Version 2022.1, Section 4.3 “Off-Road Equipment” as the analysis year increases, emission factors for the same equipment pieces decrease due to the natural turnover of older equipment being replaced by newer less polluting equipment and new regulatory requirements. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 42 3.4.2 CONSTRUCTION EQUIPMENT Consistent with industry standards and typical construction practices, each piece of equipment listed in Table 3-4 will operate up to a total of eight (8) hours per day, or more than two-thirds of the period during which construction activities are allowed pursuant to the code. In accordance with the City of Fontana Industrial Commerce Centers Sustainability Ordinance, all construction equipment will meet or exceed CARB Tier 4 Interim emission standards. TABLE 3-4: CONSTRUCTION EQUIPMENT ASSUMPTIONS Construction Activity Equipment1 Amount Hours Per Day Demolition Concrete/Industrial Saws 1 8 Excavators 3 8 Rubber Tired Dozers 2 8 Site Preparation Rubber Tired Dozers 3 8 Crawler Tractors 4 8 Grading Excavators 2 8 Graders 1 8 Rubber Tired Dozers 1 8 Scrapers 2 8 Crawler Tractors 2 8 Building Construction Cranes 1 8 Forklifts 3 8 Generator Sets 1 8 Tractors/Loaders/Backhoes 3 8 Welders 1 8 Paving Pavers 2 8 Paving Equipment 2 8 Rollers 2 8 Architectural Coating Air Compressors 1 8 1 In order to account for fugitive dust emissions, Crawler Tractors were used in lieu of Tractors/Loaders/Backhoes. 3.4.3 CONSTRUCTION EMISSIONS SUMMARY IMPACTS WITHOUT MITIGATION CalEEMod calculates maximum daily emissions for summer and winter periods. The estimated maximum daily construction emissions without mitigation are summarized on Table 3-5. Detailed construction model outputs are presented in Appendix 3.1. Under the assumed scenarios, 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 43 emissions resulting from the Project construction will not exceed criteria pollutant thresholds established by the SCAQMD for emissions of any criteria pollutant. TABLE 3-5: OVERALL CONSTRUCTION EMISSIONS SUMMARY – WITHOUT MITIGATION Year Emissions (lbs/day) VOC NOX CO SOX PM10 PM2.5 Summer 2023 3.47 19.00 57.80 0.07 7.47 1.95 Winter 2023 0.77 17.60 31.10 0.06 6.03 2.86 2024 56.30 28.90 67.70 0.08 8.88 2.86 Maximum Daily Emissions 56.30 28.90 67.70 0.08 8.88 2.86 SCAQMD Regional Threshold 75 100 550 150 150 55 Threshold Exceeded? NO NO NO NO NO NO Source: CalEEMod construction-source (unmitigated) emissions are presented in Appendix 3.1. 3.5 OPERATIONAL EMISSIONS Operational activities associated with the Project will result in emissions of VOCs, NOX, SOX, CO, PM10, and PM2.5. Operational emissions are expected from the following primary sources: • Area Source Emissions • Energy Source Emissions • Mobile Source Emissions • On-Site Cargo Handling Equipment Emissions • Transport Refrigeration Unit (TRU) Emissions • Stationary Source Emissions 3.5.1 AREA SOURCE EMISSIONS ARCHITECTURAL COATINGS Over a period of time the buildings that are part of this Project will require maintenance and will therefore produce emissions resulting from the evaporation of solvents contained in paints, varnishes, primers, and other surface coatings. The emissions associated with architectural coatings were calculated using CalEEMod. CONSUMER PRODUCTS Consumer products include, but are not limited to detergents, cleaning compounds, polishes, personal care products, and lawn and garden products. Many of these products contain organic compounds which when released in the atmosphere can react to form ozone and other 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 44 photochemically reactive pollutants. The emissions associated with use of consumer products were calculated based on defaults provided within CalEEMod. LANDSCAPE MAINTENANCE EQUIPMENT Landscape maintenance equipment would generate emissions from fuel combustion and evaporation of unburned fuel. Equipment in this category would include lawnmowers, shedders/grinders, blowers, trimmers, chain saws, and hedge trimmers used to maintain the landscaping of the Project. It should be noted that as October 9, 2021, Governor Gavin Newsom signed AB 1346. The bill aims to ban the sale of new gasoline-powered equipment under 25 gross horsepower (known as small off-road engines [SOREs]) by 2024. For purposes of analysis, the emissions associated with landscape maintenance equipment were calculated based on assumptions provided in CalEEMod. 3.5.2 ENERGY SOURCE EMISSIONS COMBUSTION EMISSIONS ASSOCIATED WITH NATURAL GAS AND ELECTRICITY Electricity and natural gas are used by almost every project. Criteria pollutant emissions are emitted through the generation of electricity and consumption of natural gas. However, because electrical generating facilities for the Project area are located either outside the region (state) or offset through the use of pollution credits (RECLAIM) for generation within the SCAB, criteria pollutant emissions from offsite generation of electricity are generally excluded from the evaluation of significance and only natural gas use is considered. 3.5.3 MOBILE SOURCE EMISSIONS The Project related operational air quality emissions derive primarily from vehicle trips generated by the Project, including employee trips to and from the site and truck trips associated with the proposed uses. Trip characteristics available from the 11115 Hemlock Avenue Traffic Study were utilized in this analysis (4). Per the 11115 Hemlock Avenue Traffic Study the proposed Project expected to generate approximately 1,598 total trips per day which include 1,036 passenger car trips per day and 562 truck trips per day. APPROACH FOR ANALYSIS OF THE PROJECT To determine emissions from passenger car vehicles, the CalEEMod defaults were utilized for trip length and trip purpose for the proposed industrial land uses. This analysis assumes that passenger cars include Light-Duty-Auto vehicles (LDA), Light-Duty- Trucks (LDT14 & LDT25), Medium-Duty-Vehicles (MDV), and Motorcycles (MCY) vehicle types. To account for emissions generated by passenger cars, the following fleet mix was utilized in this analysis: 4 Vehicles under the LDT1 category have a gross vehicle weight rating (GVWR) of less than 6,000 lbs. and equivalent test weight (ETW) of less than or equal to 3,750 lbs. 5 Vehicles under the LDT2 category have a GVWR of less than 6,000 lbs. and ETW between 3,751 lbs. and 5,750 lbs. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 45 TABLE 3-6: PASSENGER CAR FLEET MIX Land Use % Vehicle Type LDA LDT1 LDT2 MDV MCY Warehouse 54.62 4.53 21.75 16.80 2.30 High-Cube Cold Storage 54.62 4.53 21.75 16.80 2.30 Note: The Project-specific passenger car fleet mix used in this analysis is based on a proportional split utilizing the default CalEEMod percentages assigned to LDA, LDT1, LDT2, and MDV vehicle types. To determine emissions from trucks for the proposed industrial uses, the analysis incorporated the SCAQMD recommended truck trip length of 15.3 miles for 2-axle (LHDT1, LHDT2) trucks, 14.2 miles 3-axle (MHDT) trucks and 40 miles for 4+-axle (HHDT) trucks and weighting the average trip lengths using traffic trip percentages taken from the 11115 Hemlock Avenue Traffic Study. The trip length function for the proposed industrial building use has been calculated to 29.90 miles and an assumption of 100% primary trips. This trip length assumption is higher than the CalEEMod defaults for trucks. In order to be consistent with the 11115 Hemlock Avenue Traffic Study, trucks are broken down by truck type. The truck fleet mix is estimated by apportioning the trip rates for each truck type based on information provided in the 11115 Hemlock Avenue Traffic Study. Heavy trucks are broken down by truck type (or axle type) and are categorized as either Light-Heavy-Duty Trucks (LHDT16 & LHDT2 7)/2-axle, Medium-Heavy-Duty Trucks (MHD)/3-axle, and Heavy-Heavy-Duty Trucks (HHD)/4+-axle. To account for emissions generated by trucks, the following fleet mix was utilized in this analysis: TABLE 3-7: TRUCK FLEET MIX Land Use % Vehicle Type LHDT1 LHDT2 MHDT HHDT Warehouse 13.12 3.54 20.71 62.63 High-Cube Cold Storage 27.51 7.43 10.84 54.22 Note: Project-specific truck fleet mix is based on the number of trips generated by each truck type (LHDT1, LHDT2, MHDT, and HHDT) relative to the total number of truck trips. FUGITIVE DUST RELATED TO VEHICULAR TRAVEL Vehicles traveling on paved roads would be a source of fugitive emissions due to the generation of road dust inclusive of break and tire wear particulates. The emissions estimate for travel on paved roads were calculated using CalEEMod. 3.5.4 ON-SITE CARGO HANDLING EQUIPMENT EMISSIONS It is common for warehouse buildings to require the operation of exterior cargo handling equipment in the building’s truck court areas. In accordance with the City of Fontana Industrial 6 Vehicles under the LHDT1 category have a GVWR of 8,501 to 10,000 lbs. 7 Vehicles under the LHDT2 category have a GVWR of 10,001 to 14,000 lbs. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 46 Commerce Centers Sustainability Ordinance, it was assumed that only zero-emission on-site cargo handling equipment would be utilized. 3.5.5 TRU EMISSIONS In order to account for the possibility of refrigerated uses, trucks associated with the cold-storage land use are assumed to also have TRUs. Therefore, for modeling purposes 83 one-way truck trips have the potential to include TRUs. TRUs are accounted for during on-site and off-site travel. The TRU calculations are based on the EMFAC Offroad Emissions, developed by the CARB. EMFAC does not provide emission rates per hour or mile as with the on-road emission model and only provides emission inventories. Emission results are produced in tons per day while all activity, fuel consumption and horsepower hours were reported at annual levels. The emission inventory is based on specific assumptions including the average horsepower rating of specific types of equipment and the hours of operation annually. These assumptions are not always consistent with assumptions used in the modeling of project level emissions. Therefore, the emissions inventory was converted into emission rates to accurately calculate emissions from TRU operation associated with project level details. This was accomplished by converting the annual horsepower hours to daily operational characteristics and converting the daily emission levels into hourly emission rates based on the total emission of each criteria pollutant by equipment type and the average daily hours of operation. TRU emission calculations are provided in Appendix 3.3. 3.5.6 STATIONARY SOURCE EMISSIONS It is anticipated that the Project would utilize an emergency diesel-powered fire pump as well as an emergency diesel generator. For analytical purposes, it is anticipated that each engine would be rated at 300 horsepower, and that each engine would result in a maximum operating time of 1 hour per day and 50 hours per year for testing. 3.5.7 OPERATIONAL EMISSIONS SUMMARY EXISTING EMISSIONS As previously stated, the Project site is currently occupied. The estimated operation-source emissions from the existing development are summarized on Table 3-8. Existing emissions were modeled assuming 11,590 sf of light industrial uses and a 37.13 acre parking lot utilizing CalEEMod model defaults and trip characteristics available from the 11115 Hemlock Avenue Traffic Analysis (37). Detailed operation model outputs are presented in Appendix 3.2. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 47 TABLE 3-8: EMISSIONS FROM EXISTING DEVELOPMENT Source Emissions (lbs/day) VOC NOX CO SOX PM10 PM2.5 Summer Mobile Source 0.25 0.77 3.00 0.01 0.31 0.07 Area Source 0.61 < 0.005 0.50 < 0.005 < 0.005 < 0.005 Energy Source 0.01 0.13 0.11 < 0.005 0.01 0.01 Total Maximum Daily Emissions 0.87 0.90 3.61 0.01 0.32 0.08 Winter Mobile Source 0.23 0.81 2.53 0.01 0.31 0.07 Area Source 0.53 0.00 0.00 0.00 0.00 0.00 Energy Source 0.01 0.13 0.11 < 0.005 0.01 0.01 Total Maximum Daily Emissions 0.77 0.94 2.64 0.01 0.32 0.08 Source: CalEEMod operational-source emissions for the existing development are presented in Appendix 3.2. PROPOSED PROJECT EMISSIONS As previously stated, CalEEMod utilizes summer and winter EMFAC2021 emission factors in order to derive vehicle emissions associated with Project operational activities, which vary by season. As such, operational activities for summer and winter scenarios are presented in Table 3-9. Detailed operational model outputs are presented in Appendices 3.1. Project operational activities would exceed the numerical thresholds of significance established by the SCAQMD for emissions of NOX. As such, operational impacts would be considered less-than-significant. RECOMMENDED OPERATIONAL MITIGATION MEASURES Despite the incorporation of MM AQ-1 through MM AQ-10 and the anticipated regulations implemented by the EPA and CARB to improve truck efficiency, the estimated long-term emissions generated under full buildout of the proposed Project would exceed the SCAQMD’s regional operational significance thresholds (see Table 3-9) for emissions of NOX and would cumulatively contribute to the nonattainment designations in the SCAB. On this basis, it is concluded that Project operational-source NOX emissions cannot be definitively reduced below applicable SCAQMD thresholds and therefore are considered significant and unavoidable. Therefore, the proposed Project would result in a significant and unavoidable impact in this regard. MM AQ-1 through MM AQ-10 are all designed to reduce emissions. Although not quantifiable, some of these measures will result in a reduction of air quality emissions. Therefore, the Emissions Summary shown below is a conservative forecast of air quality emissions and the proposed Project is likely to be less than the total shown in Table 3-9 below. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 48 TABLE 3-9: SUMMARY OF PEAK OPERATIONAL EMISSIONS Source Emissions (lbs/day) VOC NOX CO SOX PM10 PM2.5 Summer Mobile Source 5.64 55.70 82.80 0.53 12.20 3.20 Area Source 27.50 0.32 38.30 < 0.005 0.05 0.07 Energy Source 0.27 4.94 4.15 0.03 0.38 0.38 TRU Source 6.07 6.83 0.71 0.00 0.30 0.28 Emergency Engines 0.98 2.75 2.51 < 0.005 0.14 0.14 Project Maximum Daily Emissions 40.46 70.54 128.47 0.56 13.07 4.07 Existing 0.87 0.90 3.61 0.01 0.32 0.08 Total Maximum Daily Emissions 39.59 69.64 124.86 0.55 12.75 3.99 SCAQMD Regional Threshold 55 55 550 150 150 55 Threshold Exceeded? NO YES NO NO NO NO Winter Mobile Source 5.37 58.30 73.00 0.53 12.20 3.20 Area Source 21.20 0.00 0.00 0.00 0.00 0.00 Energy Source 0.27 4.94 4.15 0.03 0.38 0.38 TRU Source 6.07 6.83 0.71 0.00 0.30 0.28 Emergency Engines 0.98 2.75 2.51 < 0.005 0.14 0.14 Project Maximum Daily Emissions 33.89 72.82 80.37 0.56 13.02 4.00 Existing 0.77 0.94 2.64 0.01 0.32 0.08 Total Maximum Daily Emissions 33.12 71.88 77.73 0.55 12.70 3.92 SCAQMD Regional Threshold 55 55 550 150 150 55 Threshold Exceeded? NO YES NO NO NO NO Source: CalEEMod operational-source emissions are presented in Appendices 3.1. 3.6 LOCALIZED SIGNIFICANCE BACKGROUND ON LST DEVELOPMENT The analysis makes use of methodology included in the SCAQMD Final Localized Significance Threshold Methodology (LST Methodology). The SCAQMD has established that impacts to air quality are significant if there is a potential to contribute or cause localized exceedances of the federal and/or state ambient air quality standards (NAAQS/CAAQS). Collectively, these are referred to as Localized Significance Thresholds (LSTs). The SCAQMD established LSTs in response to the SCAQMD Governing Board’s Environmental Justice Initiative I-48. LSTs represent the maximum emissions from a project that would not cause 8 The purpose of SCAQMD’s Environmental Justice program is to ensure that everyone has the right to equal protection from air pollution and fair access to the decision-making process that works to improve the quality of air within their communities. Further, the SCAQMD defines Environmental Justice as “…equitable environmental policymaking and enforcement to protect the health of all residents, regardless of age, culture, ethnicity, gender, race, socioeconomic status, or geographic location, from the health effects of air pollution.” 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 49 or contribute to an exceedance of the most stringent applicable federal or state ambient air quality standard at the nearest residence or sensitive receptor. The SCAQMD states that lead agencies can use the LSTs as another indicator of significance in its air quality impact analyses. LSTs were developed in response to environmental justice and health concerns raised by the public regarding exposure of individuals to criteria pollutants in local communities. To address the issue of localized significance, the SCAQMD adopted LSTs that show whether a project would cause or contribute to localized air quality impacts and thereby cause or contribute to potential localized adverse health effects. The analysis makes use of methodology included in the LST Methodology (38). APPLICABILITY OF LSTS FOR THE PROJECT For this Project, the appropriate SRA for the LST analysis is the SCAQMD Central San Bernardino Valley 1 (SRA 34). LSTs apply to CO, NO2, PM10, and PM2.5. The SCAQMD produced look-up tables for projects less than or equal to 5 acres in size. In order to determine the appropriate methodology for determining localized impacts that could occur as a result of Project-related construction, the following process is undertaken: • Identify the maximum daily on-site emissions that will occur during construction activity: o The maximum daily on-site emissions could be based on information provided by the Project Applicant; or o The SCAQMD’s Fact Sheet for Applying CalEEMod to Localized Significance Thresholds and CalEEMod User’s Guide Appendix A: Calculation Details for CalEEMod can be used to determine the maximum site acreage that is actively disturbed based on the construction equipment fleet and equipment hours as estimated in CalEEMod (39) (40). • If the total acreage disturbed is less than or equal to 5 acres per day, then the SCAQMD’s screening look-up tables are utilized to determine if a Project has the potential to result in a significant impact. The look-up tables establish a maximum daily emissions threshold in lbs/day that can be compared to CalEEMod outputs. • If the total acreage disturbed is greater than 5 acres per day, then LST impacts may still be conservatively evaluated using the LST look-up tables for a 5-acre disturbance area. Use of the 5- acre disturbance area thresholds can be used to show that even if the daily emissions from all construction activity were emitted within a 5-acre area, and therefore concentrated over a smaller area which would result in greater site adjacent concentrations, the impacts would still be less than significant if the applicable 5-acre thresholds are utilized. • The LST Methodology presents mass emission rates for each SRA, project sizes of 1, 2, and 5 acres, and nearest receptor distances of 25, 50, 100, 200, and 500 meters. For project sizes between the values given, or with receptors at distances between the given receptors, the methodology uses linear interpolation to determine the thresholds. EMISSIONS CONSIDERED Based on SCAQMD’s LST Methodology, emissions for concern during construction activities are on-site NOX, CO, PM2.5, and PM10. The LST Methodology clearly states that “off-site mobile emissions from the Project should not be included in the emissions compared to LSTs (41).” As 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 50 such, for purposes of the construction LST analysis, only emissions included in the CalEEMod “on- site” emissions outputs were considered. MAXIMUM DAILY DISTURBED-ACREAGE The “acres disturbed” for analytical purposes are based on specific equipment type for each subcategory of construction activity and the estimated maximum area a given piece of equipment can pass over in an 8-hour workday (as shown on Table 3-10). The equipment-specific grading rates are summarized in the SCAQMD’s Fact Sheet for Applying CalEEMod to Localized Significance Thresholds and CalEEMod User’s Guide Appendix C: Emission Calculation Details for CalEEMod (39) (42). It The disturbed area per day is representative of a piece of equipment making multiple passes over the same land area. In other words, one Rubber Tired Dozer can make multiple passes over the same land area totaling 0.5 acres in a given 8-hour day. Based on Table 3-10, the Project’s construction activities could actively disturb approximately 1 acre per day during demolition, 3.5 acres per day during site preparation and 4 acres per day during grading activities. TABLE 3-10: MAXIMUM DAILY DISTURBED-ACREAGE Construction Activity Equipment Type Equipment Quantity Acres graded per 8-hour day Operating Hours per Day Acres graded per day Demolition Rubber Tired Dozers 2 0.5 8 1 Total acres disturbed per day during Demolition 1 Site Preparation Crawler Tractors 4 0.5 8 2 Rubber Tired Dozers 3 0.5 8 1.5 Total acres disturbed per day during Site Preparation 3.5 Grading Crawler Tractors 2 0.5 8 1 Graders 1 0.5 8 0.5 Rubber Tired Dozers 1 0.5 8 0.5 Scrapers 2 1 8 2 Total acres disturbed per day during Grading 4 Source: Maximum daily disturbed acreage based on equipment list presented in Appendix 3.1. RECEPTORS As previously stated, LSTs represent the maximum emissions from a project that would not cause or contribute to an exceedance of the most stringent applicable NAAQS and CAAQS at the nearest residence or sensitive receptor. Receptor locations are off-site locations where individuals may be exposed to emissions from Project activities. Some people are especially sensitive to air pollution and are given special consideration when evaluating air quality impacts from projects. These groups of people include children, the elderly, and individuals with pre-existing respiratory or cardiovascular illness. Structures that house these persons or places where they gather are defined as “sensitive receptors”. These structures typically include uses such as residences, hotels, and hospitals where an individual can remain 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 51 for 24 hours. Consistent with the LST Methodology, the nearest land use where an individual could remain for 24 hours to the Project site (in this case the West Valley Detention Center) has been used to determine construction and operational air quality impacts for emissions of PM10 and PM2.5, since PM10 and PM2.5 thresholds are based on a 24-hour averaging time. LSTs apply, even for non-sensitive land uses, consistent with LST Methodology and SCAQMD guidance. Per the LST Methodology, commercial and industrial facilities are not included in the definition of sensitive receptor because employees and patrons do not typically remain onsite for a full 24 hours but are typically onsite for 8 hours or less. However, LST Methodology explicitly states that “LSTs based on shorter averaging periods, such as the NO2 and CO LSTs, could also be applied to receptors such as industrial or commercial facilities since it is reasonable to assume that a worker at these sites could be present for periods of one to eight hours (41).” Therefore, any adjacent land use where an individual could remain for 1 or 8-hours, that is located at a closer distance to the Project site than the receptor used for PM10 and PM2.5 analysis, must be considered to determine construction and operational LST air impacts for emissions of NO2 and CO since these pollutants have an averaging time of 1 and 8-hours. RECEPTORS Receptors in the Project area are described below and shown on Exhibit 3-A. Localized air quality impacts were evaluated at receptor land uses nearest the Project site. All distances are measured from the Project site boundary to the outdoor living areas (e.g., backyards) or at the building façade, whichever is closer to the Project site. R1: Location R1 represents the existing residence at 15002 Astor Lane, approximately 1,107 feet southwest of the Project site. Receptor R1 is placed in the private outdoor living area (backyard) facing the Project site. R2: Location R2 represents the existing residence at 15064 Astor Lane, approximately 918 feet southwest of the Project site. Receptor R2 is placed in the private outdoor living area (backyard) facing the Project site. R3: Location R3 represents the existing residence at 11328 Fremontia Way, approximately 943 feet southeast of the Project site. Receptor R3 is placed in the private outdoor living area (backyard) facing the Project site. R4: Location R4 represents the existing residence at 15348 Brandon Lane, approximately 955 feet southeast of the Project site. Receptor R4 is placed in the private outdoor living area (backyard) facing the Project site. R5: Location R5 represents the ST Coachworks and Diesel Repair facility at 10975 Hemlock Avenue, approximately 56 feet north of the Project site. R6: Location R6 represents the existing residence at 16079 Tyrol Drive, approximately 5,475 feet northeast of the Project site. Receptor R6 is placed in the private outdoor living area (backyard) facing the Project site. R7: Location R7 represents Jurupa Hills High School, approximately 5,654 feet northeast of the Project site. R8: Location R8 represents Michael D’Arcy Elementary School, approximately 3,027 feet southeast of the Project site. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 52 R9: Location R9 represents Henry J. Kaiser High School, approximately 4,199 feet west of the Project site. The SCAQMD recommends that the nearest sensitive receptor be considered when determining the Project’s potential to cause an individual a cumulatively significant impact. The nearest land use where an individual could remain for 24 hours to the Project site has been used to determine localized construction and operational air quality impacts for emissions of PM10 and PM2.5 (since PM10 and PM2.5 thresholds are based on a 24-hour averaging time). The nearest receptor used for evaluation of localized impacts of PM10 and PM2.5 is represented by R2 which is the residence located at 15064 Astor Lane, approximately 918 feet (280 meters) southwest of the Project site. As such, for evaluation of localized PM10 and PM2.5, a 280-meter distance will be used. As previously stated, and consistent with LST Methodology, the nearest industrial/commercial use to the Project site is used to determine construction and operational LST air impacts for emissions of NOX and CO as the averaging periods for these pollutants are shorter (8 hours or less) and it is reasonable to assumed that an individual could be present at these sites for periods of one to 8 hours. As such, the nearest receptor used for evaluation of localized impacts of NOX and CO emissions is represented by R5, which is the potential worker receptor at 10975 Hemlock Avenue, approximately 56 feet (17 meters) north of the Project site. It should be noted that the LST Methodology explicitly states that “It is possible that a project may have receptors closer than 25 meters. Projects with boundaries located closer than 25 meters to the nearest receptor should use the LSTs for receptors located at 25 meters (43).” As such a 25- meter receptor distance would be used for evaluation of localized NOX and CO emissions. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 53 EXHIBIT 3-A: SENSITIVE RECEPTOR LOCATIONS 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 54 3.7 CONSTRUCTION-SOURCE EMISSIONS LST ANALYSIS 3.7.1 LOCALIZED THRESHOLDS FOR CONSTRUCTION ACTIVITY Since the total acreage disturbed is 1 acre for demolition, 3.5 acres per day for site preparation and 4 acres per day grading activities, the SCAQMD’s screening look-up tables are utilized in determining impacts. It should be noted that since the look-up tables identify thresholds at only 1 acre, 2 acres, and 5 acres, linear regression has been utilized to determine localized significance thresholds. Consistent with SCAQMD guidance, the thresholds presented in Table 3-11 were calculated by interpolating the threshold values for the Project’s disturbed acreage. TABLE 3-11: MAXIMUM DAILY LOCALIZED CONSTRUCTION EMISSIONS THRESHOLDS Construction Activity Construction Localized Thresholds NOX CO PM10 PM2.5 Demolition 118 lbs/day 667 lbs/day 107 lbs/day 43 lbs/day Site Preparation 220 lbs/day 1,359 lbs/day 127 lbs/day 52 lbs/day Grading 237 lbs/day 1,488 lbs/day 131 lbs/day 54 lbs/day Source: Localized Thresholds presented in this table are based on the SCAQMD Final LST Methodology, July 2008 3.7.2 CONSTRUCTION-SOURCE LOCALIZED EMISSIONS IMPACTS WITHOUT MITIGATION Table 3-12 identifies the localized impacts at the nearest receptor location in the vicinity of the Project. Without mitigation, localized construction emissions would not exceed the applicable SCAQMD LSTs for emissions of any criterial pollutant. For analytical purposes, emissions associated with peak demolition, site preparation and grading activities are considered for purposes of LSTs since these phases represents the maximum localized emissions that would occur. Any other construction phases of development that overlap would result in lesser emissions and consequently lesser impacts than what is disclosed herein. Outputs from the model runs for unmitigated construction LSTs are provided in Appendix 3.1. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 55 TABLE 3-12: LOCALIZED CONSTRUCTION-SOURCE EMISSIONS – WITHOUT MITIGATION Construction Activity Year Emissions (lbs/day) NOX CO PM10 PM2.5 Demolition 2023 11.90 18.20 2.47 0.53 Maximum Daily Emissions 11.90 18.20 2.47 0.53 SCAQMD Localized Threshold 118 667 107 43 Threshold Exceeded? NO NO NO NO Site Preparation 2023 15.70 30.00 5.76 2.79 2024 15.70 30.00 5.76 2.79 Maximum Daily Emissions 15.70 30.00 5.76 2.79 SCAQMD Localized Threshold 220 1,359 127 52 Threshold Exceeded? NO NO NO NO Grading 2023 19.90 36.20 2.85 1.16 Maximum Daily Emissions 19.90 36.20 2.85 1.16 SCAQMD Localized Threshold 237 1,488 131 54 Threshold Exceeded? NO NO NO NO Source: CalEEMod unmitigated localized construction-source emissions are presented in Appendix 3.1. 3.8 OPERATIONAL-SOURCE EMISSIONS LST ANALYSIS The Project is located on an approximately 40.01-acre parcel. As noted previously, the LST Methodology provides look-up tables for sites with an area with daily disturbance of 5 acres or less. For projects that exceed 5 acres, the 5-acre LST look-up tables can be used as a screening tool to determine whether pollutants require additional detailed analysis. This approach is conservative as it assumes that all on-site emissions associated with the project would occur within a concentrated 5-acre area. This screening method would therefore over-predict potential localized impacts, because by assuming that on-site operational activities are occurring over a smaller area, the resulting concentrations of air pollutants are more highly concentrated once they reach the smaller site boundary than they would be for activities if they were spread out over a larger surface area. On a larger site, the same amount of air pollutants generated would disperse over a larger surface area and would result in a lower concentration once emissions reach the project-site boundary. As such, LSTs for a 5-acre site during operations are used as a screening tool to determine if further detailed analysis is required. The LST analysis generally includes on-site sources (area, energy, mobile, and on-site cargo handling equipment – are previously discussed in Section 3.5 of this report). However, it should be noted that the CalEEMod outputs do not separate on-site and off-site emissions from mobile sources. It should be noted that the longest on-site distance is roughly 0.5 miles for both trucks and passenger cars. As such, a separate CalEEMod run for operational LSTs has been prepared which accounts for the 0.5-mile on-site travel distance. Outputs from the model runs for operational LSTs are provided in Appendix 3.2. As shown in Table 3-14, emissions resulting from 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 56 the Project operation will not exceed the numerical localized thresholds of significance established by the SCAQMD for any criteria pollutant. Thus, a less than significant impact would occur for localized Project-related operational-source emissions and no mitigation is required. 3.8.1 LOCALIZED THRESHOLDS FOR OPERATIONAL ACTIVITY As previously stated, LSTs for a 5-acre site during operations are used as a screening tool to determine if further detailed analysis is required. TABLE 3-13: MAXIMUM DAILY LOCALIZED OPERATIONAL EMISSIONS THRESHOLDS Operational Localized Thresholds NOX CO PM10 PM10 270 lbs/day 1,746 lbs/day 34 lbs/day 14 lbs/day Source: Localized Thresholds presented in this table are based on the SCAQMD Final LST Methodology, July 2008 3.8.2 OPERATIONAL-SOURCE LOCALIZED EMISSIONS As shown on Table 3-14 operational emissions would not exceed the LST thresholds and is therefore, considered to have a less than significant localized impact during operational activity. TABLE 3-14: LOCALIZED SIGNIFICANCE SUMMARY OF OPERATIONS Scenario Emissions (lbs/day) NOX CO PM10 PM2.5 Summer 21.63 59.11 1.16 0.94 Winter 21.63 21.71 1.11 0.87 Maximum Daily Emissions 21.63 59.11 1.16 0.94 SCAQMD Localized Threshold 270 1,746 34 14 Threshold Exceeded? NO NO NO NO Source: CalEEMod localized operational-source emissions are presented in Appendix 3.2. 3.9 CO “HOT SPOT” ANALYSIS As discussed below, the Project would not result in potentially adverse CO concentrations or “hot spots.” Further, detailed modeling of Project-specific CO “hot spots” is not needed to reach this conclusion. An adverse CO concentration, known as a “hot spot”, would occur if an exceedance of the state one-hour standard of 20 ppm or the eight-hour standard of 9 ppm were to occur. It has long been recognized that CO hotspots are caused by vehicular emissions, primarily when idling at congested intersections. In response, vehicle emissions standards have become increasingly stringent in the last twenty years. Currently, the allowable CO emissions standard in California is a maximum of 3.4 grams/mile for passenger cars (there are requirements for certain vehicles that are more stringent). With the turnover of older vehicles, introduction of cleaner 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 57 fuels, and implementation of increasingly sophisticated and efficient emissions control technologies, CO concentration in the SCAB is now designated as attainment. To establish a more accurate record of baseline CO concentrations affecting the SCAB, a CO “hot spot” analysis was conducted in 2003 for four busy intersections in Los Angeles at the peak morning and afternoon time periods. This “hot spot” analysis did not predict any violation of CO standards, as shown on Table 3-14. TABLE 3-14: CO MODEL RESULTS Intersection Location CO Concentrations (ppm) Morning 1-hour Afternoon 1-hour 8-hour Wilshire Boulevard & Veteran Avenue 4.6 3.5 4.2 Sunset Boulevard & Highland Avenue 4 4.5 3.9 La Cienega Boulevard & Century Boulevard 3.7 3.1 5.8 Long Beach Boulevard & Imperial Highway 3 3.1 9.3 Source: 2003 AQMP, Appendix V: Modeling and Attainment Demonstrations Notes: Federal 1-hour standard is 35 ppm and the deferral 8-hour standard is 9.0 ppm. Based on the SCAQMD's 2003 AQMP and the 1992 Federal Attainment Plan for Carbon Monoxide (1992 CO Plan), peak carbon monoxide concentrations in the SCAB were a result of unusual meteorological and topographical conditions and not a result of traffic volumes and congestion at a particular intersection. As evidence of this, for example, 8.4 ppm 8-hr CO concentration measured at the Long Beach Blvd. and Imperial Hwy. intersection (highest CO generating intersection within the “hot spot” analysis), only 0.7 ppm was attributable to the traffic volumes and congestion at this intersection; the remaining 7.7 ppm were due to the ambient air measurements at the time the 2003 AQMP was prepared (44). In contrast, an adverse CO concentration, known as a “hot spot”, would occur if an exceedance of the state one-hour standard of 20 parts per million (ppm) or the eight-hour standard of 9 ppm were to occur. The ambient 1-hr and 8-hr CO concentration within the Project study area is estimated to be 1.9 ppm and 1.4 ppm, respectively (data from Central San Bernardino Valley 1 station for 2021). Therefore, even if the traffic volumes for the proposed Project were double or even triple of the traffic volumes generated at the Long Beach Blvd. and Imperial Hwy. intersection, coupled with the on-going improvements in ambient air quality, the Project would not be capable of resulting in a CO “hot spot” at any study area intersections. Similar considerations are also employed by other Air Districts when evaluating potential CO concentration impacts. More specifically, the Bay Area Air Quality Management District (BAAQMD) concludes that under existing and future vehicle emission rates, a given project would have to increase traffic volumes at a single intersection by more than 44,000 vehicles per hour (vph)—or 24,000 vph where vertical and/or horizontal air does not mix—in order to generate a significant CO impact (45). Traffic volumes generating the CO concentrations for the “hot spot” analysis is shown on Table 3-15. The busiest intersection evaluated was that at Wilshire Boulevard and Veteran Avenue, which has a daily traffic volume of approximately 100,000 vph and AM/PM traffic volumes of 8,062 vph and 7,719 vph respectively (44). The 2003 AQMP 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 58 estimated that the 1-hour concentration for this intersection was 4.6 ppm; this indicates that, should the daily traffic volume increase four times to 400,000 vehicles per day, CO concentrations (4.6 ppm x 4= 18.4 ppm) would still not likely exceed the most stringent 1-hour CO standard (20.0 ppm)9. TABLE 3-15: TRAFFIC VOLUMES Intersection Location Peak Traffic Volumes (vph) Eastbound (AM/PM) Westbound (AM/PM) Southbound (AM/PM) Northbound (AM/PM) Total (AM/PM) Wilshire Boulevard & Veteran Avenue 4,954/2,069 1,830/3,317 721/1,400 560/933 8,062/7,719 Sunset Boulevard & Highland Avenue 1,417/1,764 1,342/1,540 2,304/1,832 1,551/2,238 6,614/5,374 La Cienega Boulevard & Century Boulevard 2,540/2,243 1,890/2,728 1,384/2,029 821/1,674 6,634/8,674 Long Beach Boulevard & Imperial Highway 1,217/2,020 1,760/1,400 479/944 756/1,150 4,212/5,514 Source: 2003 AQMP As summarized on Table 3-16 below, the highest trips on a segment of road for the proposed Project during AM and PM traffic is 4,083 vph and 4,273 vph, respectively, on Citrus Av. & Slover Av. (4). As such, Total traffic volumes at the intersections considered are less than the traffic volumes identified in the 2003 AQMP. As such, the Project considered herein along with background and cumulative development would not produce the volume of traffic required to generate a CO “hot spot” either in the context of the 2003 Los Angeles hot spot study or based on representative BAAQMD CO threshold considerations. Therefore, CO “hot spots” are not an environmental impact of concern for the Project. Localized air quality impacts related to mobile- source emissions would therefore be less than significant. TABLE 3-16: PEAK HOUR TRAFFIC VOLUMES Intersection Location Peak Traffic Volumes (vph) Northbound (AM/PM) Southbound (AM/PM) Eastbound (AM/PM) Westbound (AM/PM) Total (AM/PM) Cherry Av. & I-10 EB Ramps 1,314 / 1,416 1,686 / 1,577 1,013 / 911 0 / 0 4,013 / 3,904 Cherry Av. & I-10 WB Ramps 1,360 / 1,482 1,517 / 1,529 0 / 0 1,077 / 828 3,954 / 3,840 Cherry Av. & Slover Av. 995 / 813 1,853 / 1,483 376 / 874 428 / 591 3,652 / 3,761 Hemlock Av. & Slover Av. 48 / 86 20 / 41 553 / 1,122 453 / 409 1,074 / 1,657 Source: 11115 Hemlock Avenue Traffic Analysis (Urban Crossroads, Inc., 2023) 9 Based on the ratio of the CO standard (20.0 ppm) and the modeled value (4.6 ppm) 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 59 3.10 AQMP The Project site is located within the SCAB, which is characterized by relatively poor air quality. The SCAQMD has jurisdiction over an approximately 10,743 square-mile area consisting of the four-county Basin and the Los Angeles County and Riverside County portions of what use to be referred to as the Southeast Desert Air Basin. In these areas, the SCAQMD is principally responsible for air pollution control, and works directly with the SCAG, county transportation commissions, local governments, as well as state and federal agencies to reduce emissions from stationary, mobile, and indirect sources to meet state and federal ambient air quality standards. Currently, these state and federal air quality standards are exceeded in most parts of the SCAB. In response, the SCAQMD has adopted a series of AQMPs to meet the state and federal ambient air quality standards. AQMPs are updated regularly in order to more effectively reduce emissions, accommodate growth, and to minimize any negative fiscal impacts of air pollution control on the economy. The draft 2022 AQMP has been prepared by SCAQMD to continue to evaluate current integrated strategies and control measures to meet the NAAQS, particularly the EPA’s strengthened ozone standard. These approaches include the use of incentive programs, recognizing existing co- benefit programs from other sectors, and developing a strategy with fair-share reductions at the federal, state, and local levels (46). Similar to the 2016 AQMP, the 2022 AQMP incorporates scientific and technological information and planning assumptions, including the 2020-2045 Regional Transportation Plan/Sustainable Communities Strategy (2020-2045 RTP/SCS), a planning document that supports the integration of land use and transportation to help the region meet the federal CAA requirements (47). The Project’s consistency with the AQMP will be determined using the 2022 AQMP as discussed below. Criteria for determining consistency with the AQMP are defined in Chapter 12, Section 12.2 and Section 12.3 of the 1993 CEQA Handbook (48). These indicators are discussed below: 3.10.1 CONSISTENCY CRITERION NO. 1 The proposed Project will not result in an increase in the frequency or severity of existing air quality violations or cause or contribute to new violations or delay the timely attainment of air quality standards or the interim emissions reductions specified in the AQMP. The violations that Consistency Criterion No. 1 refers to are the CAAQS and NAAQS. CAAQS and NAAQS violations would occur if regional or localized significance thresholds were exceeded. Construction Impacts – Consistency Criterion 1 Consistency Criterion No. 1 refers to violations of the CAAQS and NAAQS. CAAQS and NAAQS violations would occur if LSTs or regional significance thresholds were exceeded. As evaluated, the Project’s regional and localized construction-source emissions would not exceed applicable regional significance threshold and LST thresholds. As such, a less than significant impact is expected. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 60 Operational Impacts – Consistency Criterion 1 The Project’s localized operational-source emissions would not exceed applicable LSTs. However, Project operational-source emissions would exceed applicable regional thresholds for emissions of NOX. Project operational-source NOX emissions exceedances would therefore increase the frequency or severity of existing air quality violations and would cause or contribute to new violations or delay the timely attainment of air quality standards or the interim emissions reductions specified in the AQMP. On the basis of the preceding discussion, the Project is determined to be inconsistent with the first criterion. 3.10.2 CONSISTENCY CRITERION NO. 2 The Project will not exceed the assumptions in the AQMP based on the years of Project build- out phase. The 2022 AQMP demonstrates that the applicable ambient air quality standards can be achieved within the timeframes required under federal law. Growth projections from local general plans adopted by cities in the district are provided to the SCAG, which develops regional growth forecasts, which are then used to develop future air quality forecasts for the AQMP. Development consistent with the growth projections in City of Fontana General Plan is considered to be consistent with the AQMP. Construction Impacts – Consistency Criterion 2 Peak day emissions generated by construction activities are largely independent of land use assignments, but rather are a function of development scope and maximum area of disturbance. Irrespective of the site’s land use designation, development of the site to its maximum potential would likely occur, with disturbance of the entire site occurring during construction activities. As such, when considering that no emissions thresholds will be exceeded, a less than significant impact would result. Operational Impacts – Consistency Criterion 2 The City of Fontana General Plan designates the Project site for General Industrial (I-G) and is within the Southwest Industrial Park Specific Plan (SWIP) area. The Project site is designated by the SWIP as part of the Slover Central Manufacturing/Industrial District (SCD). The SCD allows for the development of manufacturing, fabrication, assembly, processing, trucking, warehousing and distribution, equipment, automobile and truck sales and services (49). The proposed Project is to consist of the development of 661,506 square feet of warehouse use and 220,502 square feet of high-cube cold storage warehousing use. The Proposed uses are consistent with the site’s land use designations and would not require a General Plan and Development Code amendment. As such, the proposed Project would not conflict with the goals and objectives of the AQMP. On the basis of the preceding discussion, the Project is determined to be consistent with the second criterion. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 61 AQMP CONSISTENCY CONCLUSION The Project would be inconsistent with AQMP Criterion Number 1, resulting in a determination that impacts in this regard would be considered potentially significant. The Project would implement development-specific air quality mitigation measures identified in this analysis, acting to generally reduce the Project’s operational source air pollutant emissions. Additionally, incorporation of contemporary energy-efficient technologies and operational programs, and compliance with SCAQMD emissions reductions and control requirements act to reduce Project air pollutant emissions generally. Notwithstanding, based on the analysis presented here, the Project is considered to be inconsistent with applicable AQMP Consistency Criteria. 3.11 POTENTIAL IMPACTS TO SENSITIVE RECEPTORS The potential impact of Project-generated air pollutant emissions at sensitive receptors has also been considered. Results of the LST analysis indicate that the Project will not exceed the SCAQMD localized significance thresholds during construction. Therefore, sensitive receptors would not be exposed to substantial pollutant concentrations during Project construction. Additionally, the Project will not exceed the SCAQMD localized significance thresholds during operational activity. Further Project traffic would not create or result in a CO “hotspot.” Therefore, sensitive receptors would not be exposed to substantial pollutant concentrations as the result of Project operations. 3.11.1 FRIANT RANCH CASE In December 2018, in the case of Sierra Club v. County of Fresno (2018) 6 Cal.5th 502, the California Supreme Court held that an EIR air quality analysis must meaningfully connect the identified air quality impacts to the human health consequences of those impacts, or meaningfully explain why that analysis cannot be provided. As discussed in briefs filed in the Friant Ranch case, correlating a project’s criteria air pollutant emissions to specific health impacts is challenging. The SCAQMD, which has among the most sophisticated air quality modeling and health impact evaluation capability of any of the air districts in the State, and thus it is uniquely situated to express an opinion on how lead agencies should correlate air quality impacts with specific health outcomes (50) noted that it may be “difficult to quantify health impacts for criteria pollutants.” SCAQMD used O3 as an example of why it is impracticable to determine specific health outcomes from criteria pollutants for all but very large, regional-scale projects. First, forming O3 “takes time and the influence of meteorological conditions for these reactions to occur, so ozone may be formed at a distance downwind from the sources.” (SCAQMD, 2015a, p. 11) Second, “it takes a large amount of additional precursor emissions (NOX and VOCs) to cause a modeled increase in ambient ozone levels over an entire region,” with a 2012 study showing that “reducing NOX by 432 tons per day (157,680 tons/year) and reducing VOC by 187 tons per day (68,255 tons/year) would reduce ozone levels at the SCAQMD’s monitor site with the highest levels by only 9 parts per billion.” (SCAQMD, 2015a, pp. 12-14) 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 62 SCAQMD concluded that it “does not currently know of a way to accurately quantify ozone- related health impacts caused by NOX or VOC emissions from relatively small projects.” (SCAQMD, 2015a, pp. 12-14) The San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) ties the difficulty of correlating the emission of criteria pollutants to health impacts to how ozone and particulate matter are formed, stating that “[b]ecause of the complexity of ozone formation, a specific tonnage amount of NOX or VOCs emitted in a particular area does not equate to a particular concentration of ozone in that area.” (SJVUAPCD, 2015, p. 4) Similarly, the tonnage of PM “emitted does not always equate to the local PM concentration because it can be transported long distances by wind,” and “[s]econdary PM, like ozone, is formed via complex chemical reactions in the atmosphere between precursor chemicals such as sulfur dioxides (SOX) and NOX,” meaning that “the tonnage of PM-forming precursor emissions in an area does not necessarily result in an equivalent concentration of secondary PM in that area.” (SJVUAPCD, 2015, p. 5) The disconnect between the amount of precursor pollutants and the concentration of ozone or PM formed makes it difficult to determine potential health impacts, which are related to the concentration of ozone and PM experienced by the receptor rather than levels of NOX, SOX, and VOCs produced by a source. Most local agencies lack the data to do their own assessment of potential health impacts from criteria air pollutant emissions, as would be required to establish customized, locally specific thresholds of significance based on potential health impacts from an individual development project. The use of national or “generic” data to fill the gap of missing local data would not yield accurate results because such data does not capture local air patterns, local background conditions, or local population characteristics, all of which play a role in how a population experiences air pollution. Because it is impracticable to accurately isolate the exact cause of a human disease (for example, the role a particular air pollutant plays compared to the role of other allergens and genetics in cause asthma), existing scientific tools cannot accurately estimate health impacts of the Project’s air emissions without undue speculation. Instead, readers are directed to the Project’s air quality impact analysis above, which provides extensive information concerning the quantifiable and non-quantifiable health risks related to the Project’s construction and long-term operation. The LST analysis above determined that the Project would not result in emissions exceeding SCAQMD’s LSTs. Therefore, the proposed Project would not be expected to exceed the most stringent applicable federal or state ambient air quality standards for emissions of CO, NOX, PM10, and PM2.5. As the Project’s emissions will comply with federal, state, and local air quality standards, the proposed Project’s emissions are not sufficiently high enough to use a regional modeling program to correlate health effects on a basin-wide level and would not provide a reliable indicator of health effects if modeled. 3.12 ODORS The potential for the Project to generate objectionable odors has also been considered. Land uses generally associated with odor complaints include: 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 63 • Agricultural uses (livestock and farming) • Wastewater treatment plants • Food processing plants • Chemical plants • Composting operations • Refineries • Landfills • Dairies • Fiberglass molding facilities The Project does not contain land uses typically associated with emitting objectionable odors. Potential odor sources associated with the proposed Project may result from construction equipment exhaust and the application of asphalt and architectural coatings during construction activities and the temporary storage of typical solid waste (refuse) associated with the proposed Project’s (long-term operational) uses. Standard construction requirements would minimize odor impacts from construction. The construction odor emissions would be temporary, short- term, and intermittent in nature and would cease upon completion of the respective phase of construction and is thus considered less than significant. It is expected that Project-generated refuse would be stored in covered containers and removed at regular intervals in compliance with the solid waste regulations. The proposed Project would also be required to comply with SCAQMD Rule 402 to prevent occurrences of public nuisances. Therefore, odors associated with the proposed Project construction and operations would be less than significant and no mitigation is required (51). 3.13 CUMULATIVE IMPACTS As previously shown in Table 2-3, the CAAQS designate the Project site as nonattainment for O3 PM10, and PM2.5 while the NAAQS designates the Project site as nonattainment for O3 and PM2.5. The SCAQMD has published a report on how to address cumulative impacts from air pollution: White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution (52). In this report the SCAQMD clearly states (Page D-3): “…the SCAQMD uses the same significance thresholds for project specific and cumulative impacts for all environmental topics analyzed in an Environmental Assessment or EIR. The only case where the significance thresholds for project specific and cumulative impacts differ is the Hazard Index (HI) significance threshold for TAC emissions. The project specific (project increment) significance threshold is HI > 1.0 while the cumulative (facility-wide) is HI > 3.0. It should be noted that the HI is only one of three TAC emission significance thresholds considered (when applicable) in a CEQA analysis. The other two are the maximum individual cancer risk (MICR) and the cancer burden, both of which use the same 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 64 significance thresholds (MICR of 10 in 1 million and cancer burden of 0.5) for project specific and cumulative impacts. Projects that exceed the project-specific significance thresholds are considered by the SCAQMD to be cumulatively considerable. This is the reason project-specific and cumulative significance thresholds are the same. Conversely, projects that do not exceed the project-specific thresholds are generally not considered to be cumulatively significant.” Therefore, this analysis assumes that individual projects that do not generate operational or construction emissions that exceed the SCAQMD’s recommended daily thresholds for project- specific impacts would also not cause a cumulatively considerable increase in emissions for those pollutants for which SCAB is in nonattainment, and, therefore, would not be considered to have a significant, adverse air quality impact. Alternatively, individual project-related construction and operational emissions that exceed SCAQMD thresholds for project-specific impacts would be considered cumulatively considerable. CONSTRUCTION IMPACTS The Project-specific evaluation of emissions presented in the preceding analysis demonstrates that proposed Project construction-source air pollutant emissions would not result in exceedances of regional thresholds. Therefore, proposed Project construction-source emissions would be considered less than significant on a project-specific and cumulative basis. OPERATIONAL IMPACTS As substantiated in this analysis, Project-level operational-source NOX emissions impacts would be significant and unavoidable. Per SCAQMD protocols, Project operational-source NOX emissions impacts would also be cumulatively significant. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 65 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 66 4 REFERENCES 1. State of California. 2020 CEQA California Environmental Quality Act. 2020. 2. South Coast Air Quality Management District. RULE 403. FUGITIVE DUST. [Online] https://www.aqmd.gov/docs/default-source/rule-book/rule-iv/rule-403.pdf?sfvrsn=4. 3. —. RULE 1113. Architectural Coatings. [Online] http://www.aqmd.gov/docs/default-source/rule- book/reg-xi/r1113.pdf. 4. Urban Crossroads, Inc. 11115 Hemlock Avenue Traffic Analysis. 2023. 5. South Coast Air Quality Management District. Southern California Air Basins. [Online] https://www.arb.ca.gov/msprog/onroad/porttruck/maps/scabc7map.pdf. 6. —. Guidance Document for Addressing Air Quality Issues in General Plans and Local Planning. 2005. 7. St. Croix Sensory, Inc. The "Gray Line" Between Odor Nuisance and Health Effects. 2000. 8. California Air Resources Board. Ambient Air Quality Standards (AAQS). [Online] 2016. http://www.arb.ca.gov/research/aaqs/aaqs2.pdf. 9. United State Environmental Protection Agency. Frequent Questions about General Conformity . EPA. [Online] https://www.epa.gov/general-conformity/frequent-questions-about-general-conformity#8. 10. South Coast Air Quality Management District. Annual Air Quality Monitoring Network Plan. [Online] July 2018. http://www.aqmd.gov/docs/default-source/clean-air-plans/air-quality-monitoring- network-plan/annual-air-quality-monitoring-network-plan-v2.pdf?sfvrsn=2. 11. Air Resources Board. State and National Ambient Air Quality Standards. [Online] https://ww2.arb.ca.gov/sites/default/files/barcu/regact/2021/sad20/appc.pdf. 12. District, South Coast Air Quality Management. Air Quality Data Tables. [Online] https://www.aqmd.gov/home/air-quality/air-quality-data-studies/historical-data-by-year. 13. Environmental Protection Agency. National Ambient Air Quality Standards (NAAQS). [Online] 1990. https://www.epa.gov/environmental-topics/air-topics. 14. —. Air Pollution and the Clean Air Act. [Online] http://www.epa.gov/air/caa/. 15. United States Environmental Protection Agency. 1990 Clean Air Act Amendment Summary: Title I. [Online] https://www.epa.gov/clean-air-act-overview/1990-clean-air-act-amendment-summary- title-i. 16. —. 1990 Clean Air Act Amendment Summary: Title II. [Online] https://www.epa.gov/clean-air-act- overview/1990-clean-air-act-amendment-summary-title-ii. 17. Air Resources Board. California Ambient Air Quality Standards (CAAQS). [Online] 2009. [Cited: April 16, 2018.] http://www.arb.ca.gov/research/aaqs/caaqs/caaqs.htm. 18. California Energy Commission. Energy Commission Adopts Updated Building Standards to Improve Efficiency, Reduce Emissions from Homes and Businesses. [Online] August 11, 2021. https://www.energy.ca.gov/news/2021-08/energy-commission-adopts-updated-building-standards- improve-efficiency-reduce-0. 19. California Department of General Services. 2022 CALGreen Code. CALGreen. [Online] https://codes.iccsafe.org/content/CAGBC2022P1. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 67 20. Southern California Association of Governments. 2016-2040 Regional Transportation Plan/Sustainable Communities Strategy. [Online] April 2016. http://scagrtpscs.net/Documents/2016/final/f2016RTPSCS.pdf. 21. South Coast Air Quality Management District. Air Quality Management Plan. 2012. 22. California Air Resources Board. The California Almanac of Emissions and Air Quality. 2013. 23. South Coast AQMD. South Coast Air Basin Ozone Trend. [Online] https://www.aqmd.gov/home/air- quality/historical-air-quality-data/historic-ozone-air-quality-trends. 24. California Air Resources Board. iADAM: Air Quality Data Statistics. California Air Resources Board. [Online] https://arb.ca.gov/adam/topfour/topfour1.php. 25. Environmental Protection Agency. Approval and Promulgation of Implementation Plans; California; South Coast Serious Area Plan for the 2006 PM2.5. [Online] 2019. https://www.federalregister.gov/documents/2019/02/12/2019-01922/approval-and-promulgation- of-implementation-plans-california-south-coast-serious-area-plan-for-the. 26. South Coast Air Quality Management District. Final 2016 Air Quality Management Plan. South Coast Air Quality Management District. [Online] March 2017. http://www.aqmd.gov/docs/default- source/clean-air-plans/air-quality-management-plans/2016-air-quality-management-plan/final- 2016-aqmp/final2016aqmp.pdf. 27. South coast Air Quality Management District. CEQA Air Quality Handbook (1993). 1993. 28. California Environmental Protection Agency Air Resources Board. Nitrogen Dioxide- Overview. [Online] http://www.arb.ca.gov/research/aaqs/caaqs/no2-1/no2-1.htm. 29. Ralph Propper, Patrick Wong, Son Bui, Jeff Austin, William Vance, Alvaro Alvarado, Bart Croes, and Dongmin Luo. Ambient and Emission Trends of Toxic Air Contaminants in California. American Chemical Society: Environmental Science & Technology. 2015. 30. Air Resources Board. ARB's Drayage Truck Regulatory Activities. [Online] http://www.arb.ca.gov/msprog/onroad/porttruck/porttruck.htm. 31. —. Truck and Bus Regulation. On-Road Heavy-Duty Diesel Vehicles (In-Use) Regulation. [Online] http://www.arb.ca.gov/msprog/onrdiesel/onrdiesel.htm. 32. The Port of Los Angeles. Clean Truck Program. [Online] http://www.portoflosangeles.org/ctp/idx_ctp.asp. 33. South Coast Air Quality Management District. Transfer Funds, Appropriate Funding, Execute Purchase Orders, Execute Contrat and Authorize Release of RFQs for the Fifth Multiple Air Toxics Exposure Study. South Coast Air Quality Management District. [Online] 2017. http://www.aqmd.gov/docs/default-source/Agendas/Governing-Board/2017/2017-jul7- 009.pdf?sfvrsn=7. 34. —. Executive Summary. MATES V Draft Report. [Online] 2021. http://www.aqmd.gov/docs/default- source/planning/mates-v/draft-mates-v-executive-summary_v2.pdf?sfvrsn=6. 35. South Coast Air Quality Management District (SCAQMD). SCAQMD Air Quality Significance Thresholds. [Online] http://www.aqmd.gov/docs/default-source/ceqa/handbook/scaqmd-air- quality-significance-thresholds.pdf?sfvrsn=2. 36. California Air Pollution Control Officers Association (CAPCOA). California Emissions Estimator Model (CalEEMod). [Online] May 2022. www.caleemod.com. 37. Urban Crossroads, Inc. 11115 Hemlock Avenue Traffic Analysis. 2023. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 68 38. Lake Environmental. US EPA Models. Lake Environmental. [Online] http://www.weblakes.com/download/us_epa.html. 39. South Coast Air Quality Management District. Fact Sheet for Applying CalEEMod to Localized Significance Thresholds. [Online] http://www.aqmd.gov/docs/default- source/ceqa/handbook/localized-significance-thresholds/caleemod-guidance.pdf. 40. California Air Pollution Control Officers Association (CAPCOA). Appendix A: Calculation Details for CalEEMod. CalEEMod. [Online] October 2017. http://www.aqmd.gov/docs/default- source/caleemod/02_appendix-a2016-3-2.pdf?sfvrsn=6. 41. South Coast Air Quality Management District. Localized Significance Thresholds Methodology. s.l. : South Coast Air Quality Managment District, 2008. 42. California Air Pollution Control Officers Association (CAPCOA). Appendix C: Emission Calculation Details for CalEEMod. CalEEMod. [Online] May 2022. https://www.caleemod.com/documents/user- guide/04_Appendix%20C.pdf. 43. South Coast Air Quality Management District. Localized Significance Thresholds Methodology. s.l. : South Coast Air Quality Managment District, 2003. 44. —. 2003 Air Quality Management Plan. [Online] 2003. https://www.aqmd.gov/home/air- quality/clean-air-plans/air-quality-mgt-plan/2003-aqmp. 45. Bay Area Air Quality Management District. [Online] http://www.baaqmd.gov/. 46. South Coast Air Quality Management District. 2022 Air Quality Management Plan. [Online] August 2022. http://www.aqmd.gov/home/air-quality/clean-air-plans/air-quality-mgt-plan. 47. Southern California Association of Governments. Adopted Final SoCal Connect 2020. [Online] September 2020. https://scag.ca.gov/read-plan-adopted-final-connect-socal-2020. 48. South Coast Air Quality Management District. CEQA Air Quality Handbook (1993). 1993. 49. City of Fontana. General Plan Update 2015-2035. [Online] 2018. https://www.fontana.org/2632/General-Plan-Update-2015---2035. 50. South Coast Air Quality Management District. Sierra Club, Revive the San Joaquin and League of Women Voters of Fresno, Plaintiffs and Appellants, v. County of Fresno, Defendant and Respondent and, Friant Ranchm L.P. Real Party in Interest and Respondent. [Online] 2015. https://www.courts.ca.gov/documents/9-s219783-ac-south-coast-air-quality-mgt-dist-041315.pdf. 51. —. RULE 402 NUISANCE. [Online] http://www.aqmd.gov/docs/default-source/rule-book/rule-iv/rule- 402.pdf. 52. Goss, Tracy A and Kroeger, Amy. White Paper on Potential Control Strategies to Address Cumulative Impacts from Air Pollution. [Online] South Coast Air Quality Management District, 2003. http://www.aqmd.gov/rules/ciwg/final_white_paper.pdf. 53. South Coast Air Quality Management District. Final 2016 Air Quality Management Plan (AQMP). [Online] March 2017. http://www.aqmd.gov/docs/default-source/clean-air-plans/air-quality- management-plans/2016-air-quality-management-plan/final-2016- aqmp/final2016aqmp.pdf?sfvrsn=11. 54. South coast Air Quality Management District. CEQA Air Quality Handbook (1993). 1993. 55. Southern California Air Quality Management District. California Emissions Estimator Model User's Guide Version 2016.3.2. [Online] http://www.aqmd.gov/docs/default-source/caleemod/01_user-39- s-guide2016-3-2_15november2017.pdf?sfvrsn=4. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 69 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 70 5 CERTIFICATIONS The contents of this air study report represent an accurate depiction of the environmental impacts associated with the proposed 11115 Hemlock Avenue. The information contained in this air quality impact assessment report is based on the best available data at the time of preparation. If you have any questions, please contact me directly at hqureshi@urbanxroads.com Haseeb Qureshi Associate Principal URBAN CROSSROADS, INC. hqureshi@urbanxroads.com EDUCATION Master of Science in Environmental Studies California State University, Fullerton • May 2010 Bachelor of Arts in Environmental Analysis and Design University of California, Irvine • June, 2006 PROFESSIONAL AFFILIATIONS AEP – Association of Environmental Planners AWMA – Air and Waste Management Association ASTM – American Society for Testing and Materials PROFESSIONAL CERTIFICATIONS Planned Communities and Urban Infill – Urban Land Institute • June 2011 Indoor Air Quality and Industrial Hygiene – EMSL Analytical • April 2008 Principles of Ambient Air Monitoring – CARB • August 2007 AB2588 Regulatory Standards – Trinity Consultants • November 2006 Air Dispersion Modeling – Lakes Environmental • June 2006 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report 71 This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report APPENDIX 2.1: STATE/FEDERAL ATTAINMENT STATUS OF CRITERIA POLLUTANTS APPENDIX C MAPS AND TABLES OF AREA DESIGNATIONS FOR STATE AND NATIONAL AMBIENT AIR QUALITY STANDARDS [This page intentionally left blank] C-1 APPENDIX C MAPS AND TABLES OF AREA DESIGNATIONS FOR STATE AND NATIONAL AMBIENT AIR QUALITY STANDARDS This attachment fulfills the requirement of Health and Safety Code section 40718 for CARB to publish maps that identify areas where one or more violations of any State ambient air quality standard (State standard) or national ambient air quality standard (national standard) have been measured. The national standards are those promulgated under section 109 of the federal Clean Air Act (42 U.S.C. 7409). This attachment is divided into three parts. The first part comprises a table showing the levels, averaging times, and measurement methods for each of the State and national standards. This is followed by a section containing maps and tables showing the area designations for each pollutant for which there is a State standard in the California Code of Regulations, title 17, section 70200. The last section contains maps and tables showing the most current area designations for the national standards. C-2 Concentration 3 Method 4 Primary 3,5 Secondary 3,6 Method 7 1 Hour 0.09 ppm (180 µg/m 3)— 8 Hour 0.070 ppm (137 µg/m 3)0.070 ppm (137 µg/m3) 24 Hour 50 µg/m3 150 µg/m3 Annual Arithmetic Mean 20 µg/m3 — 24 Hour ——35 µg/m3 Same as Primary Standard Annual Arithmetic Mean 12 µg/m3 Gravimetric or Beta Attenuation 12.0 µg/m3 15 µg/m3 1 Hour 20 ppm (23 mg/m3)35 ppm (40 mg/m3)— 8 Hour 9.0 ppm (10 mg/m 3)9 ppm (10 mg/m3)— 8 Hour (Lake Tahoe)6 ppm (7 mg/m3)—— 1 Hour 0.18 ppm (339 µg/m 3)100 ppb (188 μg/m3)— Annual Arithmetic Mean 0.030 ppm (57 µg/m3)0.053 ppm (100 µg/m3)Same as Primary Standard 1 Hour 0.25 ppm (655 µg/m 3)75 ppb (196 μg/m3)— 3 Hour ——0.5 ppm (1300 µg/m3) 24 Hour 0.04 ppm (105 µg/m 3)0.14 ppm(for certain areas)11 — Annual Arithmetic Mean —0.030 ppm(for certain areas)11 — 30 Day Average 1.5 µg/m 3 —— Calendar Quarter —1.5 µg/m3 (for certain areas)12 Rolling 3-Month Average —0.15 µg/m3 Visibility Reducing Particles14 8 Hour See footnote 14 Beta Attenuation and Transmittance through Filter Tape Sulfates 24 Hour 25 µg/m3 Ion Chromatography Hydrogen Sulfide 1 Hour 0.03 ppm (42 µg/m 3)Ultraviolet Fluorescence Vinyl Chloride12 24 Hour 0.01 ppm (26 µg/m3)Gas Chromatography See footnotes on next page … Lead12,13 Atomic Absorption High Volume Sampler and Atomic AbsorptionSame as Primary Standard No National Standards Nitrogen Dioxide (NO2)10 Gas Phase Chemiluminescence Gas Phase Chemiluminescence Sulfur Dioxide (SO2)11 Ultraviolet Fluorescence Ultraviolet Flourescence; Spectrophotometry (Pararosaniline Method) Fine Particulate Matter (PM2.5)9 Inertial Separation and Gravimetric Analysis Carbon Monoxide (CO) Non-Dispersive Infrared Photometry (NDIR) Non-Dispersive Infrared Photometry (NDIR) Ozone (O3)8 Ultraviolet Photometry Same as Primary Standard UltravioletPhotometry Respirable Particulate Matter (PM10)9 Gravimetric or Beta Attenuation Same as Primary Standard Inertial Separation and Gravimetric Analysis Ambient Air Quality Standards Pollutant Averaging Time California Standards 1 National Standards 2 (Updated 5/4/16) C-3 1. California standards for ozone, carbon monoxide (except 8-hour Lake Tahoe), sulfur dioxide (1- and 24-hour), nitrogen dioxide, and particulate matter (PM10, PM2.5, and visibility reducing particles), are values that are not to be exceeded. All others are not to be equaled or exceeded. California ambient air quality standards are listed in the Table of Standards in Section 70200 of Title 17 of the California Code of Regulations. 2. National standards (other than ozone, particulate matter, and those based on annual arithmetic mean) are not to be exceeded more than once a year. The ozone standard is attained when the fourth highest 8-hour concentration measured at each site in a year, averaged over three years, is equal to or less than the standard. For PM10, the 24-hour standard is attained when the expected number of days per calendar year with a 24-hour average concentration above 150 µg/m3 is equal to or less than one. For PM2.5, the 24-hour standard is attained when 98 percent of the daily concentrations, averaged over three years, are equal to or less than the standard. Contact the U.S. EPA for further clarification and current national policies. 3. Concentration expressed first in units in which it was promulgated. Equivalent units given in parentheses are based upon a reference temperature of 25°C and a reference pressure of 760 torr. Most measurements of air quality are to be corrected to a reference temperature of 25°C and a reference pressure of 760 torr; ppm in this table refers to ppm by volume, or micromoles of pollutant per mole of gas. 4. Any equivalent measurement method which can be shown to the satisfaction of the CARB to give equivalent results at or near the level of the air quality standard may be used. 5. National Primary Standards: The levels of air quality necessary, with an adequate margin of safety to protect the public health. 6. National Secondary Standards: The levels of air quality necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant. 7. Reference method as described by the U.S. EPA. An “equivalent method” of measurement may be used but must have a “consistent relationship to the reference method” and must be approved by the U.S. EPA. 8. On October 1, 2015, the national 8-hour ozone primary and secondary standards were lowered from 0.075 to 0.070 ppm. 9. On December 14, 2012, the national annual PM2.5 primary standard was lowered from 15 μg/m3 to 12.0 μg/m3. The existing national 24-hour PM2.5 standards (primary and secondary) were retained at 35 μg/m3, as was the annual secondary standard of 15 μg/m3. The existing 24-hour PM10 standards (primary and secondary) of 150 μg/m3 also were retained. The form of the annual primary and secondary standards is the annual mean, averaged over 3 years. 10. To attain the 1-hour national standard, the 3-year average of the annual 98th percentile of the 1-hour daily maximum concentrations at each site must not exceed 100 ppb. Note that the national 1-hour standard is in units of parts per billion (ppb). California standards are in units of parts per million (ppm). To directly compare the national 1-hour standard to the California standards the units can be converted from ppb to ppm. In this case, the national standard of 100 ppb is identical to 0.100 ppm. 11. On June 2, 2010, a new 1-hour SO2 standard was established and the existing 24-hour and annual primary standards were revoked. To attain the 1-hour national standard, the 3-year average of the annual 99th percentile of the 1-hour daily maximum concentrations at each site must not exceed 75 ppb. The 1971 SO2 national standards (24-hour and annual) remain in effect until one year after an area is designated for the 2010 standard, except that in areas designated nonattainment for the 1971 standards, the 1971 standards remain in effect until implementation plans to attain or maintain the 2010 standards are approved. Note that the 1-hour national standard is in units of parts per billion (ppb). California standards are in units of parts per million (ppm). To directly compare the 1-hour national standard to the California standard the units can be converted to ppm. In this case, the national standard of 75 ppb is identical to 0.075 ppm. 12. The CARB has identified lead and vinyl chloride as 'toxic air contaminants' with no threshold level of exposure for adverse health effects determined. These actions allow for the implementation of control measures at levels below the ambient concentrations specified for these pollutants. 13. The national standard for lead was revised on October 15, 2008 to a rolling 3-month average. The 1978 lead standard (1.5 μg/m3 as a quarterly average) remains in effect until one year after an area is designated for the 2008 standard, except that in areas designated nonattainment for the 1978 standard, the 1978 standard remains in effect until implementation plans to attain or maintain the 2008 standard are approved. 14. In 1989, the CARB converted both the general statewide 10-mile visibility standard and the Lake Tahoe 30-mile visibility standard to instrumental equivalents, which are "extinction of 0.23 per kilometer" and "extinction of 0.07 per kilometer" for the statewide and Lake Tahoe Air Basin standards, respectively. C-4 [This page intentionally left blank] C-5 Area Designations for the State Ambient Air Quality Standards The following maps and tables show the area designations for each pollutant with a State standard set forth in the California Code of Regulations, title 17, section 60200. Each area is identified as attainment, nonattainment, nonattainment-transitional, or unclassified for each pollutant, as shown below: Attainment A Nonattainment N Nonattainment-Transitional NA-T Unclassified U In general, CARB designates areas by air basin for pollutants with a regional impact and by county for pollutants with a more local impact. However, when there are areas within an air basin or county with distinctly different air quality deriving from sources and conditions not affecting the entire air basin or county, CARB may designate a smaller area. Generally, when boundaries of the designated area differ from the air basin or county boundaries, the description of the specific area is referenced at the bottom of the summary table. C-6 FIGURE 1 C-7 TABLE 1 California Ambient Air Quality Standards Area Designations for Ozone (1) N NA-T U A N NA-T U A GREAT BASIN VALLEYS AIR BASIN NORTHEAST PLATEAU AIR BASIN X Alpine County X SACRAMENTO VALLEY AIR BASIN Inyo County X Colusa and Glenn Counties X Mono County X Sutter/Yuba Counties LAKE COUNTY AIR BASIN X Sutter Buttes X LAKE TAHOE AIR BASIN X Remainder of Sutter County X MOJAVE DESERT AIR BASIN X Yuba County X MOUNTAIN COUNTIES AIR BASIN Yolo/Solano Counties X Amador County X Remainder of Air Basin X Calaveras County X SALTON SEA AIR BASIN X El Dorado County (portion) X SAN DIEGO AIR BASIN X Mariposa County X SAN FRANCISCO BAY AREA AIR BASIN X Nevada County X SAN JOAQUIN VALLEY AIR BASIN X Placer County (portion) X SOUTH CENTRAL COAST AIR BASIN Plumas County X San Luis Obispo County X Sierra County X Santa Barbara County X Tuolumne County X Ventura County X NORTH CENTRAL COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTH COAST AIR BASIN X (1) AB 3048 (Olberg) and AB 2525 (Miller) signed into law in 1996, made changes to Health and Safety Code, section 40925.5. One of the changes allows nonattainment districts to become nonattainment-transitional for ozone by operation of law. C-8 FIGURE 2 C-9 TABLE 2 California Ambient Air Quality Standards Area Designation for Suspended Particulate Matter (PM10) N U A N U A GREAT BASIN VALLEYS AIR BASIN X NORTH CENTRAL COAST AIR BASIN X LAKE COUNTY AIR BASIN X NORTH COAST AIR BASIN LAKE TAHOE AIR BASIN X Del Norte, Sonoma (portion) and Trinity Counties X MOJAVE DESERT AIR BASIN X Remainder of Air Basin X MOUNTAIN COUNTIES AIR BASIN NORTHEAST PLATEAU AIR BASIN Amador County X Siskiyou County X Calaveras County X Remainder of Air Basin X El Dorado County (portion) X SACRAMENTO VALLEY AIR BASIN Mariposa County Shasta County X - Yosemite National Park X Remainder of Air Basin X - Remainder of County X SALTON SEA AIR BASIN X Nevada County X SAN DIEGO AIR BASIN X Placer County (portion) X SAN FRANCISCO BAY AREA AIR BASIN X Plumas County X SAN JOAQUIN VALLEY AIR BASIN X Sierra County X SOUTH CENTRAL COAST AIR BASIN X Tuolumne County X SOUTH COAST AIR BASIN X C-10 FIGURE 3 C-11 TABLE 3 California Ambient Air Quality Standards Area Designations for Fine Particulate Matter (PM2.5) N U A N U A GREAT BASIN VALLEYS AIR BASIN X SALTON SEA AIR BASIN LAKE COUNTY AIR BASIN X Imperial County LAKE TAHOE AIR BASIN X - City of Calexico (3) X MOJAVE DESERT AIR BASIN Remainder of Air Basin X San Bernardino County SAN DIEGO AIR BASIN X - County portion of federal Southeast Desert Modified AQMA for Ozone (1) X SAN FRANCISCO BAY AREA AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X Remainder of Air Basin X SOUTH CENTRAL COAST AIR BASIN MOUNTAIN COUNTIES AIR BASIN San Luis Obispo County X Plumas County Santa Barbara County X - Portola Valley (2) X Ventura County X Remainder of Air Basin X SOUTH COAST AIR BASIN X NORTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SACRAMENTO VALLEY AIR BASIN Butte County X Colusa County X Glenn County X Placer County (portion) X Sacramento County X Shasta County X Sutter and Yuba Counties X Remainder of Air Basin X (1) California Code of Regulations, title 17, section 60200(b) (2) California Code of Regulations, title 17, section 60200(c) (3) California Code of Regulations, title 17, section 60200(a) C-12 FIGURE 4 C-13 TABLE 4 California Ambient Air Quality Standards Area Designation for Carbon Monoxide* N NA-T U A N NA-T U A GREAT BASIN VALLEYS AIR BASIN SACRAMENTO VALLEY AIR BASIN Alpine County X Butte County X Inyo County X Colusa County X Mono County X Glenn County X LAKE COUNTY AIR BASIN X Placer County (portion) X LAKE TAHOE AIR BASIN X Sacramento County X MOJAVE DESERT AIR BASIN Shasta County X Kern County (portion) X Solano County (portion) X Los Angeles County (portion) X Sutter County X Riverside County (portion) X Tehama County X San Bernardino County (portion) X Yolo County X MOUNTAIN COUNTIES AIR BASIN Yuba County X Amador County X SALTON SEA AIR BASIN X Calaveras County X SAN DIEGO AIR BASIN X El Dorado County (portion) X SAN FRANCISCO BAY AREA AIR BASIN X Mariposa County X SAN JOAQUIN VALLEY AIR BASIN Nevada County X Fresno County X Placer County (portion) X Kern County (portion) X Plumas County X Kings County X Sierra County X Madera County X Tuolumne County X Merced County X NORTH CENTRAL COAST AIR BASIN San Joaquin County X Monterey County X Stanislaus County X San Benito County X Tulare County X Santa Cruz County X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN SOUTH COAST AIR BASIN X Del Norte County X Humboldt County X Mendocino County X Sonoma County (portion) X Trinity County X NORTHEAST PLATEAU AIR BASIN X * The area designated for carbon monoxide is a county or portion of a county C-14 FIGURE 5 C-15 TABLE 5 California Ambient Air Quality Standards Area Designation for Nitrogen Dioxide N U A N U A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SALTON SEA AIR BASIN X LAKE TAHOE AIR BASIN X SAN DIEGO AIR BASIN X MOJAVE DESERT AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN NORTHEAST PLATEAU AIR BASIN X CA 60 Near-road Portion of San Bernardino, Riverside, and Los Angeles Counties X Remainder of Air Basin X C-16 FIGURE 6 C-17 TABLE 6 California Ambient Air Quality Standards Area Designation for Sulfur Dioxide* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SALTON SEA AIR BASIN X LAKE TAHOE AIR BASIN X SAN DIEGO AIR BASIN X MOJAVE DESERT AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X * The area designated for sulfur dioxide is a county or portion of a county C-18 FIGURE 7 C-19 TABLE 7 California Ambient Air Quality Standards Area Designation for Sulfates N U A N U A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SALTON SEA AIR BASIN X LAKE TAHOE AIR BASIN X SAN DIEGO AIR BASIN X MOJAVE DESERT AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X C-20 FIGURE 8 C-21 TABLE 8 California Ambient Air Quality Standards Area Designations for Lead (particulate)* N U A N U A GREAT BASIN VALLEYS AIR BASIN X SALTON SEA AIR BASIN X LAKE COUNTY AIR BASIN X SAN DIEGO AIR BASIN X LAKE TAHOE AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOJAVE DESERT AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SACRAMENTO VALLEY AIR BASIN X * The area designated for lead is a county or portion of a county. Since all areas in the State are in attainment for this standard, air basins are indicated here for simplicity. C-22 FIGURE 9 C-23 TABLE 9 California Ambient Air Quality Standards Area Designation for Hydrogen Sulfide* N NA-T U A N NA-T U A GREAT BASIN VALLEYS AIR BASIN NORTH CENTRAL COAST AIR BASIN X Alpine County X NORTH COAST AIR BASIN Inyo County X Del Norte County X Mono County X Humboldt County X LAKE COUNTY AIR BASIN X Mendocino County X LAKE TAHOE AIR BASIN X Sonoma County (portion) MOJAVE DESERT AIR BASIN - Geyser Geothermal Area (2) X Kern County (portion) X - Remainder of County X Los Angeles County (portion) X Trinity County X Riverside County (portion) X NORTHEAST PLATEAU AIR BASIN X San Bernardino County (portion) SACRAMENTO VALLEY AIR BASIN X - Searles Valley Planning Area (1) X SALTON SEA AIR BASIN X - Remainder of County X SAN DIEGO AIR BASIN X MOUNTAIN COUNTIES AIR BASIN SAN FRANCISCO BAY AREA AIR BASIN X Amador County SAN JOAQUIN VALLEY AIR BASIN X - City of Sutter Creek X SOUTH CENTRAL COAST AIR BASIN - Remainder of County X San Luis Obispo County X Calaveras County X Santa Barbara County X El Dorado County (portion) X Ventura County X Mariposa County X SOUTH COAST AIR BASIN X Nevada County X Placer County (portion) X Plumas County X Sierra County X Tuolumne County X * The area designated for hydrogen sulfide is a county or portion of a county (1) 52 Federal Register 29384 (August 7, 1987) (2) California Code of Regulations, title 17, section 60200(d) C-24 FIGURE 10 C-25 TABLE 10 California Ambient Air Quality Standards Area Designation for Visibility Reducing Particles N NA-T U A N NA-T U A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SALTON SEA AIR BASIN X LAKE TAHOE AIR BASIN X SAN DIEGO AIR BASIN X MOJAVE DESERT AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X C-26 Area Designations for the National Ambient Air Quality Standards The following maps and tables show the area designations for each pollutant with a national ambient air quality standard. Additional information about the federal area designations is available on the U.S. EPA website: https://www.epa.gov/green-book Over the last several years, U.S. EPA has been reviewing the levels of the various national standards. The agency has already promulgated new standard levels for some pollutants and is considering revising the levels for others. Information about the status of these reviews is available on the U.S. EPA website: https://www.epa.gov/criteria-air-pollutants Designation Categories Suspended Particulate Matter (PM10). The U.S. EPA uses three categories to designate areas with respect to PM10: • Attainment • Nonattainment • Unclassifiable Ozone, Fine Suspended Particulate Matter (PM2.5), Carbon Monoxide (CO), and Nitrogen Dioxide (NO2). The U.S. EPA uses two categories to designate areas with respect to these standards: • Nonattainment • Unclassifiable/Attainment The national 1-hour ozone standard was revoked effective June 15, 2005, and the area designations map reflects the 2015 national 8-hour ozone standard of 0.070 ppm. Original designations were finalized on August 3, 2018. On December 14, 2012, the U.S. EPA established a new national annual primary PM2.5 standard of 12.0 µg/m3. New area designations reflecting this revised standard became final in December 2014. The current designation map reflects the most recently revised (2012) annual average standard of 12.0 μg/m3 as well as the 24-hour standard of 35 μg/m3, revised in 2006. On January 22, 2010, the U.S. EPA established a new national 1-hour NO2 standard of 100 parts per billion (ppb) and retained the annual average standard of 53 ppb. Designations for the primary NO2 standard became effective on February 29, 2012. All areas of California meet this standard. Sulfur Dioxide (SO2). The U.S. EPA uses three categories to designate areas with respect to the 24-hour and annual average sulfur dioxide standards. These designation categories are: • Nonattainment, • Unclassifiable, and • Attainment/Unclassifiable. On June 2, 2010, the U.S. EPA established a new primary 1-hour SO2 standard of 75 parts per billion (ppb). At the same time, U.S. EPA revoked the 24-hour and annual C-27 average standards. Area designations for the 1-hour SO2 standard were finalized on December 21, 2017 and are reflected in the area designations map. Lead (particulate). The U.S. EPA promulgated a new rolling 3-month average lead standard in October 2008 of 0.15 μg/m3. Designations were made for this standard in November 2010. Designation Areas From time to time, the boundaries of the California air basins have been changed to facilitate the planning process. CARB generally initiates these changes, and they are not always reflected in the U.S. EPA’s area designations. For purposes of consistency, the maps in this attachment reflect area designation boundaries and nomenclature as promulgated by the U.S. EPA. In some cases, these may not be the same as those adopted by CARB. For example, the national area designations reflect the former Southeast Desert Air Basin. In accordance with Health and Safety Code section 39606.1, CARB redefined this area in 1996 to be the Mojave Desert Air Basin and Salton Sea Air Basin. The definitions and boundaries for all areas designated for the national standards can be found in Title 40, Code of Federal Regulations (CFR), Chapter I, Subchapter C, Part 81.305. They are available on the web at: https://ecfr.io/Title-40/se40.20.81_1305 C-28 FIGURE 11 C-29 TABLE 11 National Ambient Air Quality Standards Area Designations for 8-Hour Ozone* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN (cont.) LAKE COUNTY AIR BASIN X Yolo County (2) X LAKE TAHOE AIR BASIN X Yuba County X MOUNTAIN COUNTIES AIR BASIN SAN DIEGO COUNTY X Amador County X SAN FRANCISCO BAY AREA AIR BASIN X Calaveras County X SAN JOAQUIN VALLEY AIR BASIN X El Dorado County (portion) (2) X SOUTH CENTRAL COAST AIR BASIN (1) Mariposa County X San Luis Obispo County Nevada County - Eastern San Luis Obispo County X - Western Nevada County X - Remainder of County X - Remainder of County X Santa Barbara County X Placer County (portion) (2) X Ventura County Plumas County X - Area excluding Anacapa and San Nicolas Islands X Sierra County X - Channel Islands (1) X Tuolumne County X SOUTH COAST AIR BASIN (1) X NORTH CENTRAL COAST AIR BASIN X SOUTHEAST DESERT AIR BASIN NORTH COAST AIR BASIN X Kern County (portion) X NORTHEAST PLATEAU AIR BASIN X - Indian Wells Valley X SACRAMENTO VALLEY AIR BASIN Imperial County X Butte County X Los Angeles County (portion) X Colusa County X Riverside County (portion) Glenn County X - Coachella Valley X Sacramento Metro Area (2) X - Non-AQMA portion X Shasta County X San Bernardino County Sutter County - Western portion (AQMA) X - Sutter Buttes X - Eastern portion (non-AQMA) X - Southern portion of Sutter County (2) X - Remainder of Sutter County X Tehama County - Tuscan Buttes X - Remainder of Tehama County X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. NOTE: This map and table reflect the 2015 8-hour ozone standard of 0.070 ppm. (1) South Central Coast Air Basin Channel Islands: Santa Barbara County includes Santa Cruz, San Miguel, Santa Rosa, and Santa Barbara Islands. Ventura County includes Anacapa and San Nicolas Islands. South Coast Air Basin: Los Angeles County includes San Clemente and Santa Catalina Islands. (2) For this purpose, the Sacramento Metro Area comprises all of Sacramento and Yolo Counties, the Sacramento Valley Air Basin portion of Solano County, the southern portion of Sutter County, and the Sacramento Valley and Mountain Counties Air Basins portions of Placer and El Dorado counties. C-30 FIGURE 12 C-31 TABLE 12 National Ambient Air Quality Standards Area Designations for Suspended Particulate Matter (PM10)* N U A N U A GREAT BASIN VALLEYS AIR BASIN SAN DIEGO COUNTY X Alpine County X SAN FRANCISCO BAY AREA AIR BASIN X Inyo County SAN JOAQUIN VALLEY AIR BASIN X - Owens Valley Planning Area X SOUTH CENTRAL COAST AIR BASIN X - Coso Junction X SOUTH COAST AIR BASIN X - Remainder of County X SOUTHEAST DESERT AIR BASIN Mono County Eastern Kern County - Mammoth Lake Planning Area X - Indian Wells Valley X - Mono Lake Basin X - Portion within San Joaquin Valley Planning Area X - Remainder of County X - Remainder of County X LAKE COUNTY AIR BASIN X Imperial County LAKE TAHOE AIR BASIN X - Imperial Valley Planning Area X MOUNTAIN COUNTIES AIR BASIN - Remainder of County X Placer County (portion) (2) X Los Angeles County (portion) X Remainder of Air Basin X Riverside County (portion) NORTH CENTRAL COAST AIR BASIN X - Coachella Valley (3) X NORTH COAST AIR BASIN X - Non-AQMA portion X NORTHEAST PLATEAU AIR BASIN X San Bernardino County SACRAMENTO VALLEY AIR BASIN - Trona X Butte County X - Remainder of County X Colusa County X Glenn County X Placer County (portion) (2) X Sacramento County (1) X Shasta County X Solano County (portion) X Sutter County X Tehama County X Yolo County X Yuba County X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. (1) Air quality in Sacramento County meets the national PM10 standards. The request for redesignation to attainment was approved by U.S. EPA in September 2013. (2) U.S. EPA designation puts the Sacramento Valley Air Basin portion of Placer County in the Mountain Counties Air Basin. (3) Air quality in Coachella Valley meets the national PM10 standards. A request for redesignation to attainment has been submitted to U.S. EPA. C-32 FIGURE 13 C-33 TABLE 13 National Ambient Air Quality Standards Area Designations for Fine Particulate Matter (PM2.5)* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SAN DIEGO COUNTY X LAKE COUNTY AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN (2) X LAKE TAHOE AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X MOUNTAIN COUNTIES AIR BASIN SOUTH CENTRAL COAST AIR BASIN X Plumas County SOUTH COAST AIR BASIN (3) X - Portola Valley Portion of Plumas X SOUTHEAST DESERT AIR BASIN - Remainder of Plumas County X Imperial County (portion) (4) X Remainder of Air Basin X Remainder of Air Basin X NORTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SACRAMENTO VALLEY AIR BASIN Sacramento Metro Area (1) X Sutter County X Yuba County (portion) X Remainder of Air Basin X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. This map reflects the 2006 24-hour PM2.5 standard as well as the 1997 and 2012 PM2.5 annual standards. (1) For this purpose, Sacramento Metro Area comprises all of Sacramento and portions of El Dorado, Placer, Solano, and Yolo Counties. Air quality in this area meets the national PM2.5 standards. A Determination of Attainment for the 2006 24-hour PM2.5 standard was made by U.S. EPA in June 2017. (2) Air quality in this area meets the national PM2.5 standards. A Determination of Attainment for the 2006 24-hour PM2.5 standard was made by U.S. EPA in June 2017. (3) Those lands of the Santa Rosa Band of Cahulla Mission Indians in Riverside County are designated Unclassifiable/Attainment. (4) That portion of Imperial County encompassing the urban and surrounding areas of Brawley, Calexico, El Centro, Heber, Holtville, Imperial, Seeley, and Westmorland. Air quality in this area meets the national PM2.5 standards. A Determination of Attainment for the 2006 24-hour PM2.5 standard was made by U.S. EPA in June 2017. C-34 FIGURE 14 C-35 TABLE 14 National Ambient Air Quality Standards Area Designations for Carbon Monoxide* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SAN DIEGO COUNTY X LAKE TAHOE AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SOUTHEAST DESERT AIR BASIN X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. C-36 FIGURE 15 C-37 TABLE 15 National Ambient Air Quality Standards Area Designations for Nitrogen Dioxide* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SACRAMENTO VALLEY AIR BASIN X LAKE COUNTY AIR BASIN X SAN DIEGO COUNTY X LAKE TAHOE AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SOUTHEAST DESERT AIR BASIN X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. C-38 FIGURE 16 C-39 TABLE 16 National Ambient Air Quality Standards Area Designations for Sulfur Dioxide* N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SOUTH CENTRAL COAST AIR BASIN LAKE COUNTY AIR BASIN X San Luis Obispo County X LAKE TAHOE AIR BASIN X Santa Barbara County X MOUNTAIN COUNTIES AIR BASIN X Ventura County X NORTH CENTRAL COAST AIR BASIN X Channel Islands (1) X NORTH COAST AIR BASIN X SOUTH COAST AIR BASIN X NORTHEAST PLATEAU AIR BASIN X SOUTHEAST DESERT AIR BASIN SACRAMENTO VALLEY AIR BASIN X Imperial County X SAN DIEGO COUNTY X Remainder of Air Basin X SAN FRANCISCO BAY AREA AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN Fresno County X Kern County (portion) X Kings County X Madera County X Merced County X San Joaquin County X Stanislaus County X Tulare County X * Definitions and references for all areas can be found in 40 CFR, Chapter I, Part 81.305. NOTE: This map and table reflect the 2010 1-hour SO2 standard of 75 ppb. (1) South Central Coast Air Basin Channel Islands: Santa Barbara County includes Santa Cruz, San Miguel, Santa Rosa, and Santa Barbara Islands. Ventura County includes Anacapa and San Nicolas Islands. Note that the San Clemente and Santa Catalina Islands are considered part of Los Angeles County, and therefore, are included as part of the South Coast Air Basin. C-40 FIGURE 17 C-41 TABLE 17 National Ambient Air Quality Standards Area Designations for Lead (particulate) N U/A N U/A GREAT BASIN VALLEYS AIR BASIN X SAN DIEGO COUNTY X LAKE COUNTY AIR BASIN X SAN FRANCISCO BAY AREA AIR BASIN X LAKE TAHOE AIR BASIN X SAN JOAQUIN VALLEY AIR BASIN X MOUNTAIN COUNTIES AIR BASIN X SOUTH CENTRAL COAST AIR BASIN X NORTH CENTRAL COAST AIR BASIN X SOUTH COAST AIR BASIN NORTH COAST AIR BASIN X Los Angeles County (portion) (1) X NORTHEAST PLATEAU AIR BASIN X Remainder of Air Basin X SACRAMENTO VALLEY AIR BASIN X SOUTHEAST DESERT AIR BASIN X (1) Portion of County in Air Basin, not including Channel Islands 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report APPENDIX 3.1: CALEEMOD EMISSIONS MODEL OUTPUTS 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 1 / 33 15100 11115 Hemlock Construction Detailed Report Table of Contents 1. Basic Project Information 1.1. Basic Project Information 1.2. Land Use Types 1.3. User-Selected Emission Reduction Measures by Emissions Sector 2. Emissions Summary 2.1. Construction Emissions Compared Against Thresholds 2.2. Construction Emissions by Year, Unmitigated 3. Construction Emissions Details 3.1. Demolition (2023) - Unmitigated 3.3. Site Preparation (2023) - Unmitigated 3.5. Site Preparation (2024) - Unmitigated 3.7. Grading (2024) - Unmitigated 3.9. Building Construction (2024) - Unmitigated 3.11. Paving (2024) - Unmitigated 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 2 / 33 3.13. Architectural Coating (2024) - Unmitigated 4. Operations Emissions Details 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated 5. Activity Data 5.1. Construction Schedule 5.2. Off-Road Equipment 5.2.1. Unmitigated 5.3. Construction Vehicles 5.3.1. Unmitigated 5.4. Vehicles 5.4.1. Construction Vehicle Control Strategies 5.5. Architectural Coatings 5.6. Dust Mitigation 5.6.1. Construction Earthmoving Activities 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 3 / 33 5.6.2. Construction Earthmoving Control Strategies 5.7. Construction Paving 5.8. Construction Electricity Consumption and Emissions Factors 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated 5.18.2. Sequestration 5.18.2.1. Unmitigated 6. Climate Risk Detailed Report 6.1. Climate Risk Summary 6.2. Initial Climate Risk Scores 6.3. Adjusted Climate Risk Scores 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 4 / 33 7.2. Healthy Places Index Scores 7.3. Overall Health & Equity Scores 7.4. Health & Equity Measures 7.5. Evaluation Scorecard 7.6. Health & Equity Custom Measures 8. User Changes to Default Data 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 5 / 33 1. Basic Project Information 1.1. Basic Project Information Data Field Value Project Name 15100 11115 Hemlock Construction Lead Agency — Land Use Scale Project/site Analysis Level for Defaults County Windspeed (m/s)2.80 Precipitation (days)6.80 Location 34.051998997252085, -117.47393153588787 County San Bernardino-South Coast City Fontana Air District South Coast AQMD Air Basin South Coast TAZ 5310 EDFZ 10 Electric Utility Southern California Edison Gas Utility Southern California Gas 1.2. Land Use Types Land Use Subtype Size Unit Lot Acreage Building Area (sq ft)Landscape Area (sq ft) Special Landscape Area (sq ft) Population Description Unrefrigerated Warehouse-No Rail 662 1000sqft 15.2 661,506 174,497 ——— Refrigerated Warehouse-No Rail 221 1000sqft 5.06 220,502 0.00 ——— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 6 / 33 Parking Lot 412 Space 3.71 0.00 0.00 ——— Other Asphalt Surfaces 12.5 Acre 12.5 544,500 0.00 ——— 1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected 2. Emissions Summary 2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.4.19 3.47 19.0 57.8 0.07 0.18 7.30 7.47 0.17 1.78 1.95 —14,932 14,932 0.89 1.15 41.6 15,339 Daily, Winter (Max) —————————————————— Unmit.4.94 56.3 28.9 67.7 0.08 0.30 8.57 8.88 0.29 2.75 2.86 —17,399 17,399 1.04 1.22 1.23 17,789 Average Daily (Max) —————————————————— Unmit.2.60 5.02 15.0 36.0 0.05 0.14 4.92 5.06 0.13 1.26 1.39 —9,935 9,935 0.61 0.74 11.3 10,183 Annual (Max) —————————————————— Unmit.0.47 0.92 2.73 6.57 0.01 0.03 0.90 0.92 0.02 0.23 0.25 —1,645 1,645 0.10 0.12 1.87 1,686 2.2. Construction Emissions by Year, Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 7 / 33 Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily - Summer (Max) —————————————————— 2024 4.19 3.47 19.0 57.8 0.07 0.18 7.30 7.47 0.17 1.78 1.95 —14,932 14,932 0.89 1.15 41.6 15,339 Daily - Winter (Max) —————————————————— 2023 1.05 0.77 17.6 31.1 0.06 0.26 5.92 6.03 0.24 2.75 2.86 —7,861 7,861 0.60 0.70 0.27 8,085 2024 4.94 56.3 28.9 67.7 0.08 0.30 8.57 8.88 0.29 2.75 2.86 —17,399 17,399 1.04 1.22 1.23 17,789 Average Daily —————————————————— 2023 0.18 0.11 3.12 4.05 0.01 0.04 0.66 0.70 0.04 0.15 0.19 —1,375 1,375 0.10 0.12 0.76 1,413 2024 2.60 5.02 15.0 36.0 0.05 0.14 4.92 5.06 0.13 1.26 1.39 —9,935 9,935 0.61 0.74 11.3 10,183 Annual —————————————————— 2023 0.03 0.02 0.57 0.74 < 0.005 0.01 0.12 0.13 0.01 0.03 0.04 —228 228 0.02 0.02 0.13 234 2024 0.47 0.92 2.73 6.57 0.01 0.03 0.90 0.92 0.02 0.23 0.25 —1,645 1,645 0.10 0.12 1.87 1,686 3. Construction Emissions Details 3.1. Demolition (2023) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 8 / 33 Off-Road Equipment 0.41 0.41 11.9 18.2 0.03 0.20 —0.20 0.19 —0.19 —3,425 3,425 0.14 0.03 —3,437 Demolitio n ——————2.27 2.27 —0.34 0.34 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.07 0.07 1.96 2.99 0.01 0.03 —0.03 0.03 —0.03 —563 563 0.02 < 0.005 —565 Demolitio n ——————0.37 0.37 —0.06 0.06 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment 0.01 0.01 0.36 0.55 < 0.005 0.01 —0.01 0.01 —0.01 —93.2 93.2 < 0.005 < 0.005 —93.5 Demolitio n ——————0.07 0.07 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.08 0.07 0.07 0.80 0.00 0.00 0.14 0.14 0.00 0.03 0.03 —147 147 0.01 0.01 0.02 149 Vendor 0.16 0.04 1.79 0.97 0.01 0.02 0.37 0.39 0.02 0.10 0.12 —1,383 1,383 0.12 0.21 0.10 1,448 Hauling 0.40 0.06 3.82 2.05 0.02 0.04 0.75 0.79 0.04 0.21 0.24 —2,906 2,906 0.34 0.46 0.16 3,052 Average Daily —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 9 / 33 Worker 0.01 0.01 0.01 0.14 0.00 0.00 0.02 0.02 0.00 0.01 0.01 —24.5 24.5 < 0.005 < 0.005 0.05 24.8 Vendor 0.03 0.01 0.30 0.16 < 0.005 < 0.005 0.06 0.06 < 0.005 0.02 0.02 —227 227 0.02 0.03 0.27 238 Hauling 0.07 0.01 0.63 0.34 < 0.005 0.01 0.12 0.13 0.01 0.03 0.04 —478 478 0.06 0.08 0.43 502 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —4.05 4.05 < 0.005 < 0.005 0.01 4.11 Vendor < 0.005 < 0.005 0.05 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 —37.6 37.6 < 0.005 0.01 0.04 39.4 Hauling 0.01 < 0.005 0.12 0.06 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 —79.1 79.1 0.01 0.01 0.07 83.1 3.3. Site Preparation (2023) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Road Equipment 0.68 0.68 15.7 30.0 0.05 0.10 —0.10 0.10 —0.10 —5,530 5,530 0.22 0.04 —5,549 Dust From Material Movement ——————5.66 5.66 —2.69 2.69 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.01 0.01 0.21 0.41 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —75.8 75.8 < 0.005 < 0.005 —76.0 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 10 / 33 ———————0.040.04—0.080.08——————Dust From Material Movement Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment < 0.005 < 0.005 0.04 0.07 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —12.5 12.5 < 0.005 < 0.005 —12.6 Dust From Material Movement ——————0.01 0.01 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.09 0.08 0.08 0.94 0.00 0.00 0.17 0.17 0.00 0.04 0.04 —171 171 0.01 0.01 0.02 174 Vendor 0.04 0.01 0.44 0.24 < 0.005 < 0.005 0.09 0.10 < 0.005 0.03 0.03 —339 339 0.03 0.05 0.02 355 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —2.38 2.38 < 0.005 < 0.005 < 0.005 2.41 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —4.65 4.65 < 0.005 < 0.005 0.01 4.87 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.39 0.39 < 0.005 < 0.005 < 0.005 0.40 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —0.77 0.77 < 0.005 < 0.005 < 0.005 0.81 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 11 / 33 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.5. Site Preparation (2024) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Road Equipment 0.68 0.68 15.7 30.0 0.05 0.10 —0.10 0.10 —0.10 —5,529 5,529 0.22 0.04 —5,548 Dust From Material Movement ——————5.66 5.66 —2.69 2.69 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.02 0.02 0.37 0.70 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —130 130 0.01 < 0.005 —130 Dust From Material Movement ——————0.13 0.13 —0.06 0.06 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment < 0.005 < 0.005 0.07 0.13 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —21.5 21.5 < 0.005 < 0.005 —21.6 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 12 / 33 Dust From Material Movement ——————0.02 0.02 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.09 0.08 0.08 0.86 0.00 0.00 0.17 0.17 0.00 0.04 0.04 —168 168 0.01 0.01 0.02 170 Vendor 0.04 0.01 0.42 0.23 < 0.005 < 0.005 0.09 0.10 < 0.005 0.03 0.03 —336 336 0.03 0.05 0.02 351 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —4.00 4.00 < 0.005 < 0.005 0.01 4.06 Vendor < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —7.88 7.88 < 0.005 < 0.005 0.01 8.26 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —0.66 0.66 < 0.005 < 0.005 < 0.005 0.67 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —1.30 1.30 < 0.005 < 0.005 < 0.005 1.37 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.7. Grading (2024) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 13 / 33 Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Road Equipment 0.82 0.82 19.9 36.2 0.06 0.18 —0.18 0.18 —0.18 —6,715 6,715 0.27 0.05 —6,738 Dust From Material Movement ——————2.67 2.67 —0.98 0.98 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.07 0.07 1.64 2.97 0.01 0.02 —0.02 0.01 —0.01 —552 552 0.02 < 0.005 —554 Dust From Material Movement ——————0.22 0.22 —0.08 0.08 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment 0.01 0.01 0.30 0.54 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —91.4 91.4 < 0.005 < 0.005 —91.7 Dust From Material Movement ——————0.04 0.04 —0.01 0.01 ——————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 14 / 33 ——————————————————Daily, Summer (Max) Daily, Winter (Max) —————————————————— Worker 0.10 0.09 0.09 0.98 0.00 0.00 0.19 0.19 0.00 0.04 0.04 —192 192 0.01 0.01 0.02 194 Vendor 0.07 0.02 0.84 0.45 < 0.005 0.01 0.18 0.19 0.01 0.05 0.06 —671 671 0.05 0.10 0.05 703 Hauling 0.23 0.04 2.25 1.22 0.01 0.03 0.46 0.50 0.02 0.13 0.15 —1,761 1,761 0.19 0.28 0.10 1,850 Average Daily —————————————————— Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 —16.0 16.0 < 0.005 < 0.005 0.03 16.2 Vendor 0.01 < 0.005 0.07 0.04 < 0.005 < 0.005 0.01 0.02 < 0.005 < 0.005 < 0.005 —55.2 55.2 < 0.005 0.01 0.07 57.8 Hauling 0.02 < 0.005 0.19 0.10 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —145 145 0.02 0.02 0.13 152 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —2.65 2.65 < 0.005 < 0.005 < 0.005 2.69 Vendor < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 —9.13 9.13 < 0.005 < 0.005 0.01 9.57 Hauling < 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 —24.0 24.0 < 0.005 < 0.005 0.02 25.2 3.9. Building Construction (2024) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Off-Road Equipment 0.35 0.35 9.48 15.7 0.03 0.09 —0.09 0.09 —0.09 —2,630 2,630 0.11 0.02 —2,639 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 15 / 33 Daily, Winter (Max) —————————————————— Off-Road Equipment 0.35 0.35 9.48 15.7 0.03 0.09 —0.09 0.09 —0.09 —2,630 2,630 0.11 0.02 —2,639 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.21 0.21 5.77 9.53 0.02 0.06 —0.06 0.05 —0.05 —1,600 1,600 0.06 0.01 —1,605 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment 0.04 0.04 1.05 1.74 < 0.005 0.01 —0.01 0.01 —0.01 —265 265 0.01 < 0.005 —266 Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Worker 3.16 2.93 2.23 38.1 0.00 0.00 5.66 5.66 0.00 1.33 1.33 —6,268 6,268 0.30 0.23 24.9 6,369 Vendor 0.68 0.19 7.28 4.00 0.04 0.09 1.63 1.72 0.09 0.45 0.54 —6,034 6,034 0.49 0.90 16.7 6,331 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Daily, Winter (Max) —————————————————— Worker 2.99 2.75 2.61 29.4 0.00 0.00 5.66 5.66 0.00 1.33 1.33 —5,748 5,748 0.31 0.23 0.65 5,825 Vendor 0.67 0.17 7.58 4.06 0.04 0.09 1.63 1.72 0.09 0.45 0.54 —6,037 6,037 0.49 0.90 0.43 6,318 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 16 / 33 Worker 1.80 1.66 1.59 18.8 0.00 0.00 3.43 3.43 0.00 0.80 0.80 —3,546 3,546 0.19 0.14 6.55 3,598 Vendor 0.41 0.11 4.63 2.46 0.03 0.05 0.99 1.04 0.05 0.27 0.33 —3,671 3,671 0.30 0.55 4.37 3,846 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker 0.33 0.30 0.29 3.42 0.00 0.00 0.63 0.63 0.00 0.15 0.15 —587 587 0.03 0.02 1.08 596 Vendor 0.07 0.02 0.85 0.45 < 0.005 0.01 0.18 0.19 0.01 0.05 0.06 —608 608 0.05 0.09 0.72 637 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.11. Paving (2024) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Road Equipment 0.23 0.23 7.21 10.6 0.01 0.09 —0.09 0.08 —0.08 —1,512 1,512 0.06 0.01 —1,517 Paving —1.42 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment 0.02 0.02 0.59 0.87 < 0.005 0.01 —0.01 0.01 —0.01 —124 124 0.01 < 0.005 —125 Paving —0.12 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 17 / 33 Annual —————————————————— Off-Road Equipment < 0.005 < 0.005 0.11 0.16 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —20.6 20.6 < 0.005 < 0.005 —20.6 Paving —0.02 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Worker 0.07 0.07 0.07 0.74 0.00 0.00 0.14 0.14 0.00 0.03 0.03 —144 144 0.01 0.01 0.02 146 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker 0.01 0.01 0.01 0.06 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 —12.0 12.0 < 0.005 < 0.005 0.02 12.2 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 —1.99 1.99 < 0.005 < 0.005 < 0.005 2.02 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 3.13. Architectural Coating (2024) - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 18 / 33 Daily, Summer (Max) —————————————————— Daily, Winter (Max) —————————————————— Off-Road Equipment 0.03 0.03 1.43 1.28 < 0.005 0.04 —0.04 0.04 —0.04 —178 178 0.01 < 0.005 —179 Architect ural Coatings —50.7 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Off-Road Equipment < 0.005 < 0.005 0.08 0.07 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —9.76 9.76 < 0.005 < 0.005 —9.79 Architect ural Coatings —2.78 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Off-Road Equipment < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.62 1.62 < 0.005 < 0.005 —1.62 Architect ural Coatings —0.51 ———————————————— Onsite truck 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Offsite —————————————————— Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 19 / 33 ——————————————————Daily, Winter (Max) Worker 0.60 0.55 0.52 5.89 0.00 0.00 1.13 1.13 0.00 0.27 0.27 —1,150 1,150 0.06 0.05 0.13 1,165 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Average Daily —————————————————— Worker 0.03 0.03 0.03 0.34 0.00 0.00 0.06 0.06 0.00 0.01 0.01 —63.9 63.9 < 0.005 < 0.005 0.12 64.8 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Annual —————————————————— Worker 0.01 0.01 0.01 0.06 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 —10.6 10.6 < 0.005 < 0.005 0.02 10.7 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 4. Operations Emissions Details 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio n TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 20 / 33 ——————————————————Daily, Winter (Max) Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 21 / 33 Sequest —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 22 / 33 5. Activity Data 5.1. Construction Schedule Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 10/1/2023 12/24/2023 5.00 60.0 — Site Preparation Site Preparation 12/25/2023 1/12/2024 5.00 15.0 — Grading Grading 1/13/2024 2/23/2024 5.00 30.0 — Building Construction Building Construction 2/24/2024 12/31/2024 5.00 222 — Paving Paving 11/20/2024 12/31/2024 5.00 30.0 — Architectural Coating Architectural Coating 12/4/2024 12/31/2024 5.00 20.0 — 5.2. Off-Road Equipment 5.2.1. Unmitigated Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Concrete/Industrial Saws Diesel Tier 4 Interim 1.00 8.00 33.0 0.73 Demolition Excavators Diesel Tier 4 Interim 3.00 8.00 36.0 0.38 Demolition Rubber Tired Dozers Diesel Tier 4 Interim 2.00 8.00 367 0.40 Site Preparation Rubber Tired Dozers Diesel Tier 4 Interim 3.00 8.00 367 0.40 Grading Excavators Diesel Tier 4 Interim 2.00 8.00 36.0 0.38 Grading Graders Diesel Tier 4 Interim 1.00 8.00 148 0.41 Grading Rubber Tired Dozers Diesel Tier 4 Interim 1.00 8.00 367 0.40 Grading Scrapers Diesel Tier 4 Interim 2.00 8.00 423 0.48 Building Construction Cranes Diesel Tier 4 Interim 1.00 8.00 367 0.29 Building Construction Forklifts Diesel Tier 4 Interim 3.00 8.00 82.0 0.20 Building Construction Generator Sets Diesel Tier 4 Interim 1.00 8.00 14.0 0.74 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 23 / 33 Building Construction Tractors/Loaders/Backh Diesel Tier 4 Interim 3.00 8.00 84.0 0.37 Building Construction Welders Diesel Tier 4 Interim 1.00 8.00 46.0 0.45 Paving Pavers Diesel Tier 4 Interim 2.00 8.00 81.0 0.42 Paving Paving Equipment Diesel Tier 4 Interim 2.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 4 Interim 2.00 8.00 36.0 0.38 Architectural Coating Air Compressors Diesel Tier 4 Interim 1.00 8.00 37.0 0.48 Site Preparation Crawler Tractors Diesel Tier 4 Interim 4.00 8.00 87.0 0.43 Grading Crawler Tractors Diesel Tier 4 Interim 2.00 8.00 87.0 0.43 5.3. Construction Vehicles 5.3.1. Unmitigated Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition ———— Demolition Worker 15.0 13.4 LDA,LDT1,LDT2 Demolition Vendor 53.0 8.33 HHDT,MHDT Demolition Hauling 40.6 20.0 HHDT Demolition Onsite truck ——HHDT Site Preparation ———— Site Preparation Worker 17.5 13.4 LDA,LDT1,LDT2 Site Preparation Vendor 13.0 8.33 HHDT,MHDT Site Preparation Hauling 0.00 20.0 HHDT Site Preparation Onsite truck ——HHDT Grading ———— Grading Worker 20.0 13.4 LDA,LDT1,LDT2 Grading Vendor 26.0 8.33 HHDT,MHDT Grading Hauling 25.0 20.0 HHDT 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 24 / 33 Grading Onsite truck ——HHDT Building Construction ———— Building Construction Worker 599 13.4 LDA,LDT1,LDT2 Building Construction Vendor 234 8.33 HHDT,MHDT Building Construction Hauling 0.00 20.0 HHDT Building Construction Onsite truck ——HHDT Paving ———— Paving Worker 15.0 13.4 LDA,LDT1,LDT2 Paving Vendor 0.00 8.33 HHDT,MHDT Paving Hauling 0.00 20.0 HHDT Paving Onsite truck ——HHDT Architectural Coating ———— Architectural Coating Worker 120 13.4 LDA,LDT1,LDT2 Architectural Coating Vendor 0.00 8.33 HHDT,MHDT Architectural Coating Hauling 0.00 20.0 HHDT Architectural Coating Onsite truck ——HHDT 5.4. Vehicles 5.4.1. Construction Vehicle Control Strategies Non-applicable. No control strategies activated by user. 5.5. Architectural Coatings Phase Name Residential Interior Area Coated (sq ft) Residential Exterior Area Coated (sq ft) Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) Architectural Coating 0.00 0.00 1,323,012 441,004 42,361 5.6. Dust Mitigation 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 25 / 33 5.6.1. Construction Earthmoving Activities Phase Name Material Imported (cy)Material Exported (cy)Acres Graded (acres)Material Demolished (Building Square Footage) Acres Paved (acres) Demolition 0.00 0.00 0.00 212,026 — Site Preparation ——52.5 0.00 — Grading 6,000 0.00 120 0.00 — Paving 0.00 0.00 0.00 0.00 16.2 5.6.2. Construction Earthmoving Control Strategies Control Strategies Applied Frequency (per day)PM10 Reduction PM2.5 Reduction Water Exposed Area 3 74%74% Water Demolished Area 2 36%36% 5.7. Construction Paving Land Use Area Paved (acres)% Asphalt Unrefrigerated Warehouse-No Rail 0.00 0% Refrigerated Warehouse-No Rail 0.00 0% Parking Lot 3.71 100% Other Asphalt Surfaces 12.5 100% 5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh) Year kWh per Year CO2 CH4 N2O 2023 0.00 532 0.03 < 0.005 2024 0.00 532 0.03 < 0.005 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 26 / 33 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated Biomass Cover Type Initial Acres Final Acres 5.18.2. Sequestration 5.18.2.1. Unmitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 6. Climate Risk Detailed Report 6.1. Climate Risk Summary Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100. Climate Hazard Result for Project Location Unit Temperature and Extreme Heat 24.4 annual days of extreme heat Extreme Precipitation 3.50 annual days with precipitation above 20 mm Sea Level Rise 0.00 meters of inundation depth Wildfire 6.13 annual hectares burned 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 27 / 33 Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider different increments of sea level rise coupled with extreme storm events. Users may select from four model simulations to view the range in potential inundation depth for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 50 meters (m) by 50 m, or about 164 feet (ft) by 164 ft. Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. 6.2. Initial Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 0 0 N/A Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 0 0 N/A Wildfire 1 0 0 N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 0 0 0 N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures. 6.3. Adjusted Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 1 1 3 Extreme Precipitation N/A N/A N/A N/A 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 28 / 33 Sea Level Rise 1 1 1 2 Wildfire 1 1 1 2 Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 1 1 1 2 The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures. 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. Indicator Result for Project Census Tract Exposure Indicators — AQ-Ozone 95.3 AQ-PM 93.5 AQ-DPM 78.3 Drinking Water 96.1 Lead Risk Housing 42.2 Pesticides 18.1 Toxic Releases 84.6 Traffic 79.6 Effect Indicators — 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 29 / 33 CleanUp Sites 82.7 Groundwater 14.3 Haz Waste Facilities/Generators 94.4 Impaired Water Bodies 0.00 Solid Waste 87.1 Sensitive Population — Asthma 44.4 Cardio-vascular 55.1 Low Birth Weights 20.3 Socioeconomic Factor Indicators — Education 73.4 Housing 26.7 Linguistic 34.6 Poverty 51.4 Unemployment 51.3 7.2. Healthy Places Index Scores The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. Indicator Result for Project Census Tract Economic — Above Poverty 46.27229565 Employed 32.144232 Median HI 62.51764404 Education — Bachelor's or higher 30.92518927 High school enrollment 27.47337354 Preschool enrollment 9.149236494 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 30 / 33 Transportation — Auto Access 75.69613756 Active commuting 25.30476068 Social — 2-parent households 83.85730784 Voting 30.59155653 Neighborhood — Alcohol availability 69.20313102 Park access 26.03618632 Retail density 30.7583729 Supermarket access 43.14128064 Tree canopy 6.390350314 Housing — Homeownership 72.5009624 Housing habitability 80.9829334 Low-inc homeowner severe housing cost burden 33.8380598 Low-inc renter severe housing cost burden 97.78005903 Uncrowded housing 24.76581548 Health Outcomes — Insured adults 19.91530861 Arthritis 67.1 Asthma ER Admissions 64.4 High Blood Pressure 71.3 Cancer (excluding skin)74.5 Asthma 37.3 Coronary Heart Disease 66.7 Chronic Obstructive Pulmonary Disease 53.7 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 31 / 33 Diagnosed Diabetes 40.6 Life Expectancy at Birth 53.2 Cognitively Disabled 21.0 Physically Disabled 18.0 Heart Attack ER Admissions 49.4 Mental Health Not Good 35.7 Chronic Kidney Disease 55.3 Obesity 33.9 Pedestrian Injuries 62.8 Physical Health Not Good 37.9 Stroke 58.2 Health Risk Behaviors — Binge Drinking 36.9 Current Smoker 40.0 No Leisure Time for Physical Activity 38.5 Climate Change Exposures — Wildfire Risk 0.0 SLR Inundation Area 0.0 Children 32.5 Elderly 76.6 English Speaking 56.0 Foreign-born 61.6 Outdoor Workers 45.8 Climate Change Adaptive Capacity — Impervious Surface Cover 67.8 Traffic Density 81.5 Traffic Access 23.0 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 32 / 33 Other Indices — Hardship 66.3 Other Decision Support — 2016 Voting 50.4 7.3. Overall Health & Equity Scores Metric Result for Project Census Tract CalEnviroScreen 4.0 Score for Project Location (a)71.0 Healthy Places Index Score for Project Location (b)40.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535)No Project Located in a Low-Income Community (Assembly Bill 1550)No Project Located in a Community Air Protection Program Community (Assembly Bill 617)No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. 7.4. Health & Equity Measures No Health & Equity Measures selected. 7.5. Evaluation Scorecard Health & Equity Evaluation Scorecard not completed. 7.6. Health & Equity Custom Measures No Health & Equity Custom Measures created. 8. User Changes to Default Data Screen Justification Construction: Construction Phases Construction schedule based on data provided by the Project team. Construction: Off-Road Equipment All equipment will operate for 8 hours per day. Crawler tractors used in lieu of tractors/loaders/backhoes in order to account for fugitive dust. 15100 11115 Hemlock Construction Detailed Report, 3/16/2023 33 / 33 Construction: Architectural Coatings Project will utilize super-compliant coatings 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 1 / 31 15100 Hemlock Existing Ops Detailed Report Table of Contents 1. Basic Project Information 1.1. Basic Project Information 1.2. Land Use Types 1.3. User-Selected Emission Reduction Measures by Emissions Sector 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds 2.5. Operations Emissions by Sector, Unmitigated 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated 4.2.3. Natural Gas Emissions By Land Use - Unmitigated 4.3. Area Emissions by Source 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 2 / 31 4.3.2. Unmitigated 4.4. Water Emissions by Land Use 4.4.2. Unmitigated 4.5. Waste Emissions by Land Use 4.5.2. Unmitigated 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 3 / 31 5. Activity Data 5.9. Operational Mobile Sources 5.9.1. Unmitigated 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings 5.10.3. Landscape Equipment 5.11. Operational Energy Consumption 5.11.1. Unmitigated 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated 5.13. Operational Waste Generation 5.13.1. Unmitigated 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated 5.15. Operational Off-Road Equipment 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 4 / 31 5.15.1. Unmitigated 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps 5.16.2. Process Boilers 5.17. User Defined 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated 5.18.2. Sequestration 5.18.2.1. Unmitigated 6. Climate Risk Detailed Report 6.1. Climate Risk Summary 6.2. Initial Climate Risk Scores 6.3. Adjusted Climate Risk Scores 6.4. Climate Risk Reduction Measures 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 5 / 31 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores 7.2. Healthy Places Index Scores 7.3. Overall Health & Equity Scores 7.4. Health & Equity Measures 7.5. Evaluation Scorecard 7.6. Health & Equity Custom Measures 8. User Changes to Default Data 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 6 / 31 1. Basic Project Information 1.1. Basic Project Information Data Field Value Project Name 15100 Hemlock Existing Ops Lead Agency — Land Use Scale Project/site Analysis Level for Defaults County Windspeed (m/s)2.80 Precipitation (days)6.80 Location 34.051878962182315, -117.47382704561898 County San Bernardino-South Coast City Fontana Air District South Coast AQMD Air Basin South Coast TAZ 5310 EDFZ 10 Electric Utility Southern California Edison Gas Utility Southern California Gas 1.2. Land Use Types Land Use Subtype Size Unit Lot Acreage Building Area (sq ft)Landscape Area (sq ft) Special Landscape Area (sq ft) Population Description General Light Industry 11.6 1000sqft 0.27 11,590 0.00 ——— User Defined Industrial 11.6 User Defined Unit 0.00 0.00 0.00 ——— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 7 / 31 Other Asphalt Surfaces 37.1 Acre 37.1 0.00 0.00 ——— 1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.0.40 0.86 0.90 3.61 0.01 0.02 0.30 0.32 0.02 0.06 0.08 12.9 1,277 1,290 1.37 0.08 8.01 1,357 Daily, Winter (Max) —————————————————— Unmit.0.30 0.77 0.94 2.64 0.01 0.02 0.30 0.32 0.02 0.06 0.08 12.9 1,235 1,248 1.37 0.08 3.15 1,310 Average Daily (Max) —————————————————— Unmit.0.28 0.76 0.74 2.37 0.01 0.02 0.22 0.24 0.02 0.04 0.06 12.9 985 998 1.36 0.07 4.60 1,056 Annual (Max) —————————————————— Unmit.0.05 0.14 0.13 0.43 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 2.13 163 165 0.23 0.01 0.76 175 2.5. Operations Emissions by Sector, Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 8 / 31 Daily, Summer (Max) —————————————————— Mobile 0.30 0.25 0.77 3.00 0.01 0.01 0.30 0.31 0.01 0.06 0.07 —992 992 0.05 0.07 4.99 1,019 Area 0.09 0.61 < 0.005 0.50 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —2.07 2.07 < 0.005 < 0.005 —2.13 Energy 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —265 265 0.02 < 0.005 —266 Water ———————————5.14 17.4 22.6 0.53 0.01 —39.6 Waste ———————————7.75 0.00 7.75 0.77 0.00 —27.1 Refrig.————————————————3.02 3.02 Total 0.40 0.86 0.90 3.61 0.01 0.02 0.30 0.32 0.02 0.06 0.08 12.9 1,277 1,290 1.37 0.08 8.01 1,357 Daily, Winter (Max) —————————————————— Mobile 0.28 0.23 0.81 2.53 0.01 0.01 0.30 0.31 0.01 0.06 0.07 —952 952 0.05 0.07 0.13 974 Area —0.53 ———————————————— Energy 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —265 265 0.02 < 0.005 —266 Water ———————————5.14 17.4 22.6 0.53 0.01 —39.6 Waste ———————————7.75 0.00 7.75 0.77 0.00 —27.1 Refrig.————————————————3.02 3.02 Total 0.30 0.77 0.94 2.64 0.01 0.02 0.30 0.32 0.02 0.06 0.08 12.9 1,235 1,248 1.37 0.08 3.15 1,310 Average Daily —————————————————— Mobile 0.21 0.17 0.60 1.91 0.01 0.01 0.22 0.23 0.01 0.04 0.05 —701 701 0.03 0.05 1.58 719 Area 0.06 0.58 < 0.005 0.35 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —1.42 1.42 < 0.005 < 0.005 —1.46 Energy 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —265 265 0.02 < 0.005 —266 Water ———————————5.14 17.4 22.6 0.53 0.01 —39.6 Waste ———————————7.75 0.00 7.75 0.77 0.00 —27.1 Refrig.————————————————3.02 3.02 Total 0.28 0.76 0.74 2.37 0.01 0.02 0.22 0.24 0.02 0.04 0.06 12.9 985 998 1.36 0.07 4.60 1,056 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 9 / 31 Annual —————————————————— Mobile 0.04 0.03 0.11 0.35 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —116 116 0.01 0.01 0.26 119 Area 0.01 0.11 < 0.005 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —0.24 0.24 < 0.005 < 0.005 —0.24 Energy < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —43.9 43.9 < 0.005 < 0.005 —44.0 Water ———————————0.85 2.89 3.74 0.09 < 0.005 —6.55 Waste ———————————1.28 0.00 1.28 0.13 0.00 —4.49 Refrig.————————————————0.50 0.50 Total 0.05 0.14 0.13 0.43 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 2.13 163 165 0.23 0.01 0.76 175 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— General Light Industry 0.22 0.20 0.13 2.46 < 0.005 < 0.005 0.18 0.18 < 0.005 0.03 0.03 —503 503 0.02 0.01 1.98 509 User Defined Industrial 0.07 0.04 0.64 0.53 < 0.005 0.01 0.12 0.13 0.01 0.03 0.04 —489 489 0.03 0.06 3.02 510 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.30 0.25 0.77 3.00 0.01 0.01 0.30 0.31 0.01 0.06 0.07 —992 992 0.05 0.07 4.99 1,019 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 10 / 31 ——————————————————Daily, Winter (Max) General Light Industry 0.21 0.19 0.14 2.00 < 0.005 < 0.005 0.18 0.18 < 0.005 0.03 0.03 —463 463 0.02 0.01 0.05 468 User Defined Industrial 0.07 0.04 0.67 0.53 < 0.005 0.01 0.12 0.13 0.01 0.03 0.04 —489 489 0.03 0.06 0.08 507 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.28 0.23 0.81 2.53 0.01 0.01 0.30 0.31 0.01 0.06 0.07 —952 952 0.05 0.07 0.13 974 Annual —————————————————— General Light Industry 0.03 0.03 0.02 0.28 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 < 0.005 —56.9 56.9 < 0.005 < 0.005 0.10 57.5 User Defined Industrial 0.01 0.01 0.09 0.07 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 —59.3 59.3 < 0.005 0.01 0.16 61.5 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.04 0.03 0.11 0.35 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —116 116 0.01 0.01 0.26 119 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 11 / 31 General Light Industry ————————————106 106 0.01 < 0.005 —106 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————106 106 0.01 < 0.005 —106 Daily, Winter (Max) —————————————————— General Light Industry ————————————106 106 0.01 < 0.005 —106 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————106 106 0.01 < 0.005 —106 Annual —————————————————— General Light Industry ————————————17.5 17.5 < 0.005 < 0.005 —17.6 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————17.5 17.5 < 0.005 < 0.005 —17.6 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 12 / 31 4.2.3. Natural Gas Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— General Light Industry 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —159 159 0.01 < 0.005 —160 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —159 159 0.01 < 0.005 —160 Daily, Winter (Max) —————————————————— General Light Industry 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —159 159 0.01 < 0.005 —160 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.01 0.01 0.13 0.11 < 0.005 0.01 —0.01 0.01 —0.01 —159 159 0.01 < 0.005 —160 Annual —————————————————— General Light Industry < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —26.4 26.4 < 0.005 < 0.005 —26.4 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 13 / 31 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —26.4 26.4 < 0.005 < 0.005 —26.4 4.3. Area Emissions by Source 4.3.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Consum er Products —0.38 ———————————————— Architect ural Coatings —0.15 ———————————————— Landsca pe Equipme nt 0.09 0.08 < 0.005 0.50 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —2.07 2.07 < 0.005 < 0.005 —2.13 Total 0.09 0.61 < 0.005 0.50 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —2.07 2.07 < 0.005 < 0.005 —2.13 Daily, Winter (Max) —————————————————— Consum er Products —0.38 ———————————————— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 14 / 31 ————————————————0.15—Architect ural Total —0.53 ———————————————— Annual —————————————————— Consum er Products —0.07 ———————————————— Architect ural Coatings —0.03 ———————————————— Landsca pe Equipme nt 0.01 0.01 < 0.005 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —0.24 0.24 < 0.005 < 0.005 —0.24 Total 0.01 0.11 < 0.005 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —0.24 0.24 < 0.005 < 0.005 —0.24 4.4. Water Emissions by Land Use 4.4.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— General Light Industry ———————————5.14 17.4 22.6 0.53 0.01 —39.6 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 15 / 31 Total ———————————5.14 17.4 22.6 0.53 0.01 —39.6 Daily, Winter (Max) —————————————————— General Light Industry ———————————5.14 17.4 22.6 0.53 0.01 —39.6 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————5.14 17.4 22.6 0.53 0.01 —39.6 Annual —————————————————— General Light Industry ———————————0.85 2.89 3.74 0.09 < 0.005 —6.55 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————0.85 2.89 3.74 0.09 < 0.005 —6.55 4.5. Waste Emissions by Land Use 4.5.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 16 / 31 ——————————————————Daily, Summer (Max) General Light Industry ———————————7.75 0.00 7.75 0.77 0.00 —27.1 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————7.75 0.00 7.75 0.77 0.00 —27.1 Daily, Winter (Max) —————————————————— General Light Industry ———————————7.75 0.00 7.75 0.77 0.00 —27.1 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————7.75 0.00 7.75 0.77 0.00 —27.1 Annual —————————————————— General Light Industry ———————————1.28 0.00 1.28 0.13 0.00 —4.49 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 17 / 31 Total ———————————1.28 0.00 1.28 0.13 0.00 —4.49 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— General Light Industry ————————————————3.02 3.02 Total ————————————————3.02 3.02 Daily, Winter (Max) —————————————————— General Light Industry ————————————————3.02 3.02 Total ————————————————3.02 3.02 Annual —————————————————— General Light Industry ————————————————0.50 0.50 Total ————————————————0.50 0.50 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 18 / 31 Equipme Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 19 / 31 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio n TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 20 / 31 Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 21 / 31 Remove —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 5. Activity Data 5.9. Operational Mobile Sources 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 22 / 31 5.9.1. Unmitigated Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year General Light Industry 49.0 4.30 1.72 13,089 669 58.7 23.4 178,757 User Defined Industrial 13.0 1.14 0.45 3,473 273 23.8 9.48 72,866 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings Residential Interior Area Coated (sq ft)Residential Exterior Area Coated (sq ft)Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) 0 0.00 17,385 5,795 97,043 5.10.3. Landscape Equipment Season Unit Value Snow Days day/yr 0.00 Summer Days day/yr 250 5.11. Operational Energy Consumption 5.11.1. Unmitigated Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 23 / 31 Land Use Electricity (kWh/yr)CO2 CH4 N2O Natural Gas (kBTU/yr) General Light Industry 110,542 349 0.0330 0.0040 497,050 User Defined Industrial 0.00 349 0.0330 0.0040 0.00 Other Asphalt Surfaces 0.00 349 0.0330 0.0040 0.00 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated Land Use Indoor Water (gal/year)Outdoor Water (gal/year) General Light Industry 2,680,188 0.00 User Defined Industrial 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.13. Operational Waste Generation 5.13.1. Unmitigated Land Use Waste (ton/year)Cogeneration (kWh/year) General Light Industry 14.4 0.00 User Defined Industrial 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated Land Use Type Equipment Type Refrigerant GWP Quantity (kg)Operations Leak Rate Service Leak Rate Times Serviced General Light Industry Other commercial A/C and heat pumps R-410A 2,088 0.30 4.00 4.00 18.0 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 24 / 31 5.15. Operational Off-Road Equipment 5.15.1. Unmitigated Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps Equipment Type Fuel Type Number per Day Hours per Day Hours per Year Horsepower Load Factor 5.16.2. Process Boilers Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr)Daily Heat Input (MMBtu/day)Annual Heat Input (MMBtu/yr) 5.17. User Defined Equipment Type Fuel Type —— 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres 5.18.1. Biomass Cover Type 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 25 / 31 5.18.1.1. Unmitigated Biomass Cover Type Initial Acres Final Acres 5.18.2. Sequestration 5.18.2.1. Unmitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 6. Climate Risk Detailed Report 6.1. Climate Risk Summary Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100. Climate Hazard Result for Project Location Unit Temperature and Extreme Heat 24.4 annual days of extreme heat Extreme Precipitation 3.50 annual days with precipitation above 20 mm Sea Level Rise 0.00 meters of inundation depth Wildfire 6.13 annual hectares burned Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider different increments of sea level rise coupled with extreme storm events. Users may select from four model simulations to view the range in potential inundation depth for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 50 meters (m) by 50 m, or about 164 feet (ft) by 164 ft. Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 26 / 31 6.2. Initial Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 0 0 N/A Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 0 0 N/A Wildfire 1 0 0 N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 0 0 0 N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures. 6.3. Adjusted Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 1 1 3 Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 1 1 2 Wildfire 1 1 1 2 Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 1 1 1 2 The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 27 / 31 The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures. 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. Indicator Result for Project Census Tract Exposure Indicators — AQ-Ozone 95.3 AQ-PM 93.5 AQ-DPM 78.3 Drinking Water 96.1 Lead Risk Housing 42.2 Pesticides 18.1 Toxic Releases 84.6 Traffic 79.6 Effect Indicators — CleanUp Sites 82.7 Groundwater 14.3 Haz Waste Facilities/Generators 94.4 Impaired Water Bodies 0.00 Solid Waste 87.1 Sensitive Population — Asthma 44.4 Cardio-vascular 55.1 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 28 / 31 Low Birth Weights 20.3 Socioeconomic Factor Indicators — Education 73.4 Housing 26.7 Linguistic 34.6 Poverty 51.4 Unemployment 51.3 7.2. Healthy Places Index Scores The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. Indicator Result for Project Census Tract Economic — Above Poverty 46.27229565 Employed 32.144232 Median HI 62.51764404 Education — Bachelor's or higher 30.92518927 High school enrollment 27.47337354 Preschool enrollment 9.149236494 Transportation — Auto Access 75.69613756 Active commuting 25.30476068 Social — 2-parent households 83.85730784 Voting 30.59155653 Neighborhood — Alcohol availability 69.20313102 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 29 / 31 Park access 26.03618632 Retail density 30.7583729 Supermarket access 43.14128064 Tree canopy 6.390350314 Housing — Homeownership 72.5009624 Housing habitability 80.9829334 Low-inc homeowner severe housing cost burden 33.8380598 Low-inc renter severe housing cost burden 97.78005903 Uncrowded housing 24.76581548 Health Outcomes — Insured adults 19.91530861 Arthritis 67.1 Asthma ER Admissions 64.4 High Blood Pressure 71.3 Cancer (excluding skin)74.5 Asthma 37.3 Coronary Heart Disease 66.7 Chronic Obstructive Pulmonary Disease 53.7 Diagnosed Diabetes 40.6 Life Expectancy at Birth 53.2 Cognitively Disabled 21.0 Physically Disabled 18.0 Heart Attack ER Admissions 49.4 Mental Health Not Good 35.7 Chronic Kidney Disease 55.3 Obesity 33.9 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 30 / 31 Pedestrian Injuries 62.8 Physical Health Not Good 37.9 Stroke 58.2 Health Risk Behaviors — Binge Drinking 36.9 Current Smoker 40.0 No Leisure Time for Physical Activity 38.5 Climate Change Exposures — Wildfire Risk 0.0 SLR Inundation Area 0.0 Children 32.5 Elderly 76.6 English Speaking 56.0 Foreign-born 61.6 Outdoor Workers 45.8 Climate Change Adaptive Capacity — Impervious Surface Cover 67.8 Traffic Density 81.5 Traffic Access 23.0 Other Indices — Hardship 66.3 Other Decision Support — 2016 Voting 50.4 7.3. Overall Health & Equity Scores Metric Result for Project Census Tract CalEnviroScreen 4.0 Score for Project Location (a)71.0 15100 Hemlock Existing Ops Detailed Report, 3/7/2023 31 / 31 Healthy Places Index Score for Project Location (b)40.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535)No Project Located in a Low-Income Community (Assembly Bill 1550)No Project Located in a Community Air Protection Program Community (Assembly Bill 617)No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. 7.4. Health & Equity Measures No Health & Equity Measures selected. 7.5. Evaluation Scorecard Health & Equity Evaluation Scorecard not completed. 7.6. Health & Equity Custom Measures No Health & Equity Custom Measures created. 8. User Changes to Default Data Screen Justification Operations: Vehicle Data Trip characteristics based on Project traffic study Operations: Fleet Mix Fleet mix adjusted to separate passenger vehicles and trucks. 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 1 / 36 15100 11115 Hemlock Operation Detailed Report Table of Contents 1. Basic Project Information 1.1. Basic Project Information 1.2. Land Use Types 1.3. User-Selected Emission Reduction Measures by Emissions Sector 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds 2.5. Operations Emissions by Sector, Unmitigated 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated 4.2.3. Natural Gas Emissions By Land Use - Unmitigated 4.3. Area Emissions by Source 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 2 / 36 4.3.2. Unmitigated 4.4. Water Emissions by Land Use 4.4.2. Unmitigated 4.5. Waste Emissions by Land Use 4.5.2. Unmitigated 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 3 / 36 5. Activity Data 5.9. Operational Mobile Sources 5.9.1. Unmitigated 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings 5.10.3. Landscape Equipment 5.11. Operational Energy Consumption 5.11.1. Unmitigated 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated 5.13. Operational Waste Generation 5.13.1. Unmitigated 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated 5.15. Operational Off-Road Equipment 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 4 / 36 5.15.1. Unmitigated 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps 5.16.2. Process Boilers 5.17. User Defined 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated 5.18.2. Sequestration 5.18.2.1. Unmitigated 6. Climate Risk Detailed Report 6.1. Climate Risk Summary 6.2. Initial Climate Risk Scores 6.3. Adjusted Climate Risk Scores 6.4. Climate Risk Reduction Measures 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 5 / 36 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores 7.2. Healthy Places Index Scores 7.3. Overall Health & Equity Scores 7.4. Health & Equity Measures 7.5. Evaluation Scorecard 7.6. Health & Equity Custom Measures 8. User Changes to Default Data 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 6 / 36 1. Basic Project Information 1.1. Basic Project Information Data Field Value Project Name 15100 11115 Hemlock Operation Lead Agency — Land Use Scale Project/site Analysis Level for Defaults County Windspeed (m/s)2.80 Precipitation (days)6.80 Location 34.05176988719391, -117.47365223447954 County San Bernardino-South Coast City Fontana Air District South Coast AQMD Air Basin South Coast TAZ 5310 EDFZ 10 Electric Utility Southern California Edison Gas Utility Southern California Gas 1.2. Land Use Types Land Use Subtype Size Unit Lot Acreage Building Area (sq ft)Landscape Area (sq ft) Special Landscape Area (sq ft) Population Description Unrefrigerated Warehouse-No Rail 662 1000sqft 15.2 661,506 174,497 ——— Refrigerated Warehouse-No Rail 221 1000sqft 5.06 220,502 0.00 ——— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 7 / 36 User Defined Industrial 882 User Defined Unit 0.00 0.00 0.00 ——— Parking Lot 412 Space 3.71 0.00 0.00 ——— Other Asphalt Surfaces 12.5 Acre 12.5 0.00 0.00 ——— 1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.18.5 34.4 63.7 128 0.57 1.35 11.4 12.8 1.33 2.45 3.78 838 69,684 70,522 90.0 8.34 412 75,669 Daily, Winter (Max) —————————————————— Unmit.11.4 27.9 66.0 79.7 0.56 1.30 11.4 12.7 1.26 2.45 3.72 838 68,688 69,525 90.0 8.35 230 74,493 Average Daily (Max) —————————————————— Unmit.12.9 30.1 51.2 88.5 0.44 1.03 8.83 9.86 1.01 1.90 2.91 838 55,451 56,289 89.0 6.70 287 60,798 Annual (Max) —————————————————— Unmit.2.36 5.49 9.34 16.2 0.08 0.19 1.61 1.80 0.19 0.35 0.53 139 9,181 9,319 14.7 1.11 47.6 10,066 2.5. Operations Emissions by Sector, Unmitigated 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 8 / 36 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Mobile 10.1 5.64 55.7 82.8 0.53 0.78 11.4 12.2 0.74 2.45 3.20 —58,152 58,152 4.26 7.30 187 60,620 Area 6.82 27.5 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Total 18.5 34.4 63.7 128 0.57 1.35 11.4 12.8 1.33 2.45 3.78 838 69,684 70,522 90.0 8.34 412 75,669 Daily, Winter (Max) —————————————————— Mobile 9.81 5.37 58.3 73.0 0.53 0.78 11.4 12.2 0.74 2.45 3.20 —57,313 57,313 4.27 7.33 4.86 59,607 Area —21.2 ———————————————— Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Total 11.4 27.9 66.0 79.7 0.56 1.30 11.4 12.7 1.26 2.45 3.72 838 68,688 69,525 90.0 8.35 230 74,493 Average Daily —————————————————— Mobile 7.57 4.14 45.6 57.8 0.41 0.60 8.83 9.43 0.57 1.90 2.47 —44,403 44,403 3.30 5.67 62.5 46,237 Area 4.67 25.5 0.22 26.3 < 0.005 0.04 —0.04 0.05 —0.05 —108 108 < 0.005 0.01 —111 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 9 / 36 Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 0.15 0.13 0.38 0.34 < 0.005 0.02 —0.02 0.02 —0.02 —69.0 69.0 < 0.005 < 0.005 —69.2 Total 12.9 30.1 51.2 88.5 0.44 1.03 8.83 9.86 1.01 1.90 2.91 838 55,451 56,289 89.0 6.70 287 60,798 Annual —————————————————— Mobile 1.38 0.76 8.33 10.5 0.07 0.11 1.61 1.72 0.10 0.35 0.45 —7,351 7,351 0.55 0.94 10.4 7,655 Area 0.85 4.66 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 Energy 0.10 0.05 0.90 0.76 0.01 0.07 —0.07 0.07 —0.07 —1,578 1,578 0.14 0.01 —1,584 Water ———————————64.7 222 287 6.66 0.16 —501 Waste ———————————74.0 0.00 74.0 7.39 0.00 —259 Refrig.————————————————37.2 37.2 Stationar y 0.03 0.02 0.07 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.4 11.4 < 0.005 < 0.005 —11.5 Total 2.36 5.49 9.34 16.2 0.08 0.19 1.61 1.80 0.19 0.35 0.53 139 9,181 9,319 14.7 1.11 47.6 10,066 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 10 / 36 Unrefrige Warehouse-No Rail 3.35 3.06 1.90 36.9 0.07 0.03 2.67 2.71 0.03 0.46 0.49 —7,540 7,540 0.27 0.19 29.6 7,632 Refrigera ted Warehou se-No Rail 1.38 1.26 0.78 15.2 0.03 0.01 1.10 1.11 0.01 0.19 0.20 —3,102 3,102 0.11 0.08 12.2 3,140 User Defined Industrial 5.36 1.33 53.0 30.8 0.43 0.73 7.65 8.38 0.70 1.81 2.51 —47,510 47,510 3.88 7.04 146 49,849 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 10.1 5.64 55.7 82.8 0.53 0.78 11.4 12.2 0.74 2.45 3.20 —58,152 58,152 4.26 7.30 187 60,620 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail 3.19 2.90 2.11 29.9 0.07 0.03 2.67 2.71 0.03 0.46 0.49 —6,939 6,939 0.28 0.20 0.77 7,007 Refrigera ted Warehou se-No Rail 1.31 1.19 0.87 12.3 0.03 0.01 1.10 1.11 0.01 0.19 0.20 —2,855 2,855 0.12 0.08 0.32 2,883 User Defined Industrial 5.31 1.29 55.3 30.8 0.43 0.73 7.65 8.38 0.70 1.81 2.51 —47,518 47,518 3.87 7.04 3.78 49,718 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 11 / 36 0.000.000.000.000.000.00—0.000.000.000.000.000.000.000.000.000.000.00Other Asphalt Surfaces Total 9.81 5.37 58.3 73.0 0.53 0.78 11.4 12.2 0.74 2.45 3.20 —57,313 57,313 4.27 7.33 4.86 59,607 Annual —————————————————— Unrefrige rated Warehou se-No Rail 0.42 0.38 0.29 4.17 0.01 < 0.005 0.36 0.36 < 0.005 0.06 0.07 —852 852 0.03 0.02 1.55 862 Refrigera ted Warehou se-No Rail 0.21 0.19 0.14 2.05 < 0.005 < 0.005 0.18 0.18 < 0.005 0.03 0.03 —418 418 0.02 0.01 0.76 423 User Defined Industrial 0.75 0.18 7.90 4.33 0.06 0.10 1.08 1.18 0.10 0.26 0.35 —6,081 6,081 0.50 0.90 8.04 6,370 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 1.38 0.76 8.33 10.5 0.07 0.11 1.61 1.72 0.10 0.35 0.45 —7,351 7,351 0.55 0.94 10.4 7,655 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 12 / 36 Unrefrige Warehouse-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————3,639 3,639 0.34 0.04 —3,660 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————3,639 3,639 0.34 0.04 —3,660 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————3,639 3,639 0.34 0.04 —3,660 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 13 / 36 0.00—0.000.000.000.00————————————Other Asphalt Surfaces Total ————————————3,639 3,639 0.34 0.04 —3,660 Annual —————————————————— Unrefrige rated Warehou se-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————602 602 0.06 0.01 —606 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————602 602 0.06 0.01 —606 4.2.3. Natural Gas Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 14 / 36 4,041—0.010.364,0304,030—0.26—0.260.26—0.260.022.843.380.190.37Unrefrige rated Warehou se-No Refrigera ted Warehou se-No Rail 0.17 0.09 1.56 1.31 0.01 0.12 —0.12 0.12 —0.12 —1,862 1,862 0.16 < 0.005 —1,867 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —5,892 5,892 0.52 0.01 —5,908 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail 0.37 0.19 3.38 2.84 0.02 0.26 —0.26 0.26 —0.26 —4,030 4,030 0.36 0.01 —4,041 Refrigera ted Warehou se-No Rail 0.17 0.09 1.56 1.31 0.01 0.12 —0.12 0.12 —0.12 —1,862 1,862 0.16 < 0.005 —1,867 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 15 / 36 0.00—0.000.000.000.00—0.00—0.000.00—0.000.000.000.000.000.00Other Asphalt Surfaces Total 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —5,892 5,892 0.52 0.01 —5,908 Annual —————————————————— Unrefrige rated Warehou se-No Rail 0.07 0.03 0.62 0.52 < 0.005 0.05 —0.05 0.05 —0.05 —667 667 0.06 < 0.005 —669 Refrigera ted Warehou se-No Rail 0.03 0.02 0.28 0.24 < 0.005 0.02 —0.02 0.02 —0.02 —308 308 0.03 < 0.005 —309 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.10 0.05 0.90 0.76 0.01 0.07 —0.07 0.07 —0.07 —975 975 0.09 < 0.005 —978 4.3. Area Emissions by Source 4.3.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 16 / 36 ————————————————18.9—Consum er Architect ural Coatings —2.29 ———————————————— Landsca pe Equipme nt 6.82 6.29 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Total 6.82 27.5 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Daily, Winter (Max) —————————————————— Consum er Products —18.9 ———————————————— Architect ural Coatings —2.29 ———————————————— Total —21.2 ———————————————— Annual —————————————————— Consum er Products —3.45 ———————————————— Architect ural Coatings —0.42 ———————————————— Landsca pe Equipme nt 0.85 0.79 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 Total 0.85 4.66 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 4.4. Water Emissions by Land Use 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 17 / 36 4.4.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————293 1,009 1,302 30.2 0.73 —2,272 Refrigera ted Warehou se-No Rail ———————————97.7 332 429 10.1 0.24 —753 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————391 1,340 1,731 40.2 0.97 —3,025 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————293 1,009 1,302 30.2 0.73 —2,272 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 18 / 36 753—0.2410.142933297.7———————————Refrigera ted Warehou Rail User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————391 1,340 1,731 40.2 0.97 —3,025 Annual —————————————————— Unrefrige rated Warehou se-No Rail ———————————48.5 167 216 4.99 0.12 —376 Refrigera ted Warehou se-No Rail ———————————16.2 54.9 71.1 1.66 0.04 —125 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————64.7 222 287 6.66 0.16 —501 4.5. Waste Emissions by Land Use 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 19 / 36 4.5.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————335 0.00 335 33.5 0.00 —1,172 Refrigera ted Warehou se-No Rail ———————————112 0.00 112 11.2 0.00 —391 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————447 0.00 447 44.7 0.00 —1,563 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————335 0.00 335 33.5 0.00 —1,172 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 20 / 36 391—0.0011.21120.00112———————————Refrigera ted Warehou Rail User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————447 0.00 447 44.7 0.00 —1,563 Annual —————————————————— Unrefrige rated Warehou se-No Rail ———————————55.5 0.00 55.5 5.55 0.00 —194 Refrigera ted Warehou se-No Rail ———————————18.5 0.00 18.5 1.85 0.00 —64.7 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————74.0 0.00 74.0 7.39 0.00 —259 4.6. Refrigerant Emissions by Land Use 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 21 / 36 4.6.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Refrigera ted Warehou se-No Rail ————————————————225 225 Total ————————————————225 225 Daily, Winter (Max) —————————————————— Refrigera ted Warehou se-No Rail ————————————————225 225 Total ————————————————225 225 Annual —————————————————— Refrigera ted Warehou se-No Rail ————————————————37.2 37.2 Total ————————————————37.2 37.2 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 22 / 36 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Fire Pump 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Emergen cy Generato r 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Total 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 23 / 36 ——————————————————Daily, Winter (Max) Fire Pump 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Emergen cy Generato r 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Total 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Annual —————————————————— Fire Pump 0.01 0.01 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —5.71 5.71 < 0.005 < 0.005 —5.73 Emergen cy Generato r 0.01 0.01 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —5.71 5.71 < 0.005 < 0.005 —5.73 Total 0.03 0.02 0.07 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.4 11.4 < 0.005 < 0.005 —11.5 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 24 / 36 Total —————————————————— Annual —————————————————— Total —————————————————— 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio n TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 25 / 36 ——————————————————Daily, Winter (Max) Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 26 / 36 ——————————————————Remove d Subtotal —————————————————— ——————————————————— Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 5. Activity Data 5.9. Operational Mobile Sources 5.9.1. Unmitigated Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Unrefrigerated Warehouse-No Rail 734 64.2 25.8 196,126 10,028 876 352 2,678,442 Refrigerated Warehouse-No Rail 302 172 164 96,269 4,126 2,343 2,243 1,314,726 User Defined Industrial 562 128 103 158,529 16,799 3,824 3,086 4,740,016 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 27 / 36 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings Residential Interior Area Coated (sq ft)Residential Exterior Area Coated (sq ft)Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) 0 0.00 1,323,012 441,004 42,466 5.10.3. Landscape Equipment Season Unit Value Snow Days day/yr 0.00 Summer Days day/yr 250 5.11. Operational Energy Consumption 5.11.1. Unmitigated Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr)CO2 CH4 N2O Natural Gas (kBTU/yr) Unrefrigerated Warehouse-No Rail 0.00 349 0.0330 0.0040 12,575,678 Refrigerated Warehouse-No Rail 3,809,555 349 0.0330 0.0040 5,808,956 User Defined Industrial 0.00 349 0.0330 0.0040 0.00 Parking Lot 0.00 349 0.0330 0.0040 0.00 Other Asphalt Surfaces 0.00 349 0.0330 0.0040 0.00 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 28 / 36 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated Land Use Indoor Water (gal/year)Outdoor Water (gal/year) Unrefrigerated Warehouse-No Rail 152,973,263 2,802,269 Refrigerated Warehouse-No Rail 50,991,088 0.00 User Defined Industrial 0.00 0.00 Parking Lot 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.13. Operational Waste Generation 5.13.1. Unmitigated Land Use Waste (ton/year)Cogeneration (kWh/year) Unrefrigerated Warehouse-No Rail 622 0.00 Refrigerated Warehouse-No Rail 207 0.00 User Defined Industrial 0.00 0.00 Parking Lot 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated Land Use Type Equipment Type Refrigerant GWP Quantity (kg)Operations Leak Rate Service Leak Rate Times Serviced Refrigerated Warehouse-No Rail Cold storage User Defined 150 7.50 7.50 7.50 25.0 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 29 / 36 5.15. Operational Off-Road Equipment 5.15.1. Unmitigated Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps Equipment Type Fuel Type Number per Day Hours per Day Hours per Year Horsepower Load Factor Fire Pump Diesel 1.00 1.00 50.0 300 0.73 Emergency Generator Diesel 1.00 1.00 50.0 300 0.73 5.16.2. Process Boilers Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr)Daily Heat Input (MMBtu/day)Annual Heat Input (MMBtu/yr) 5.17. User Defined Equipment Type Fuel Type —— 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 30 / 36 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated Biomass Cover Type Initial Acres Final Acres 5.18.2. Sequestration 5.18.2.1. Unmitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 6. Climate Risk Detailed Report 6.1. Climate Risk Summary Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100. Climate Hazard Result for Project Location Unit Temperature and Extreme Heat 24.4 annual days of extreme heat Extreme Precipitation 3.50 annual days with precipitation above 20 mm Sea Level Rise 0.00 meters of inundation depth Wildfire 6.13 annual hectares burned Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider different increments of sea level rise coupled with extreme storm events. Users may select from four model simulations to view the range in potential inundation depth for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 50 meters (m) by 50 m, or about 164 feet (ft) by 164 ft. 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 31 / 36 Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. 6.2. Initial Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 0 0 N/A Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 0 0 N/A Wildfire 1 0 0 N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 0 0 0 N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures. 6.3. Adjusted Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 1 1 3 Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 1 1 2 Wildfire 1 1 1 2 Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 32 / 36 Air Quality Degradation 1 1 1 2 The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures. 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. Indicator Result for Project Census Tract Exposure Indicators — AQ-Ozone 95.3 AQ-PM 93.5 AQ-DPM 78.3 Drinking Water 96.1 Lead Risk Housing 42.2 Pesticides 18.1 Toxic Releases 84.6 Traffic 79.6 Effect Indicators — CleanUp Sites 82.7 Groundwater 14.3 Haz Waste Facilities/Generators 94.4 Impaired Water Bodies 0.00 Solid Waste 87.1 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 33 / 36 Sensitive Population — Asthma 44.4 Cardio-vascular 55.1 Low Birth Weights 20.3 Socioeconomic Factor Indicators — Education 73.4 Housing 26.7 Linguistic 34.6 Poverty 51.4 Unemployment 51.3 7.2. Healthy Places Index Scores The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. Indicator Result for Project Census Tract Economic — Above Poverty 46.27229565 Employed 32.144232 Median HI 62.51764404 Education — Bachelor's or higher 30.92518927 High school enrollment 27.47337354 Preschool enrollment 9.149236494 Transportation — Auto Access 75.69613756 Active commuting 25.30476068 Social — 2-parent households 83.85730784 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 34 / 36 Voting 30.59155653 Neighborhood — Alcohol availability 69.20313102 Park access 26.03618632 Retail density 30.7583729 Supermarket access 43.14128064 Tree canopy 6.390350314 Housing — Homeownership 72.5009624 Housing habitability 80.9829334 Low-inc homeowner severe housing cost burden 33.8380598 Low-inc renter severe housing cost burden 97.78005903 Uncrowded housing 24.76581548 Health Outcomes — Insured adults 19.91530861 Arthritis 67.1 Asthma ER Admissions 64.4 High Blood Pressure 71.3 Cancer (excluding skin)74.5 Asthma 37.3 Coronary Heart Disease 66.7 Chronic Obstructive Pulmonary Disease 53.7 Diagnosed Diabetes 40.6 Life Expectancy at Birth 53.2 Cognitively Disabled 21.0 Physically Disabled 18.0 Heart Attack ER Admissions 49.4 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 35 / 36 Mental Health Not Good 35.7 Chronic Kidney Disease 55.3 Obesity 33.9 Pedestrian Injuries 62.8 Physical Health Not Good 37.9 Stroke 58.2 Health Risk Behaviors — Binge Drinking 36.9 Current Smoker 40.0 No Leisure Time for Physical Activity 38.5 Climate Change Exposures — Wildfire Risk 0.0 SLR Inundation Area 0.0 Children 32.5 Elderly 76.6 English Speaking 56.0 Foreign-born 61.6 Outdoor Workers 45.8 Climate Change Adaptive Capacity — Impervious Surface Cover 67.8 Traffic Density 81.5 Traffic Access 23.0 Other Indices — Hardship 66.3 Other Decision Support — 2016 Voting 50.4 15100 11115 Hemlock Operation Detailed Report, 3/7/2023 36 / 36 7.3. Overall Health & Equity Scores Metric Result for Project Census Tract CalEnviroScreen 4.0 Score for Project Location (a)71.0 Healthy Places Index Score for Project Location (b)40.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535)No Project Located in a Low-Income Community (Assembly Bill 1550)No Project Located in a Community Air Protection Program Community (Assembly Bill 617)No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. 7.4. Health & Equity Measures No Health & Equity Measures selected. 7.5. Evaluation Scorecard Health & Equity Evaluation Scorecard not completed. 7.6. Health & Equity Custom Measures No Health & Equity Custom Measures created. 8. User Changes to Default Data Screen Justification Operations: Vehicle Data Trip rates based on Project traffic study Operations: Fleet Mix Fleet mix adjusted to separate passenger vehicles and trucks. Operations: Energy Use Per Fontana GNP, solar will be installed to supply 100% of the non-refrigeration power needs. Operations: Refrigerants As of 1 January 2022, new commercial refrigeration equipment may not use refrigerants with a GWP of 150 or greater. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report APPENDIX 3.2: CALEEMOD OPERATIONAL LST EMISSIONS MODEL OUTPUTS 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 1 / 36 15100 11115 Hemlock Operation LST Detailed Report Table of Contents 1. Basic Project Information 1.1. Basic Project Information 1.2. Land Use Types 1.3. User-Selected Emission Reduction Measures by Emissions Sector 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds 2.5. Operations Emissions by Sector, Unmitigated 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated 4.2.3. Natural Gas Emissions By Land Use - Unmitigated 4.3. Area Emissions by Source 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 2 / 36 4.3.2. Unmitigated 4.4. Water Emissions by Land Use 4.4.2. Unmitigated 4.5. Waste Emissions by Land Use 4.5.2. Unmitigated 4.6. Refrigerant Emissions by Land Use 4.6.1. Unmitigated 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 3 / 36 5. Activity Data 5.9. Operational Mobile Sources 5.9.1. Unmitigated 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings 5.10.3. Landscape Equipment 5.11. Operational Energy Consumption 5.11.1. Unmitigated 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated 5.13. Operational Waste Generation 5.13.1. Unmitigated 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated 5.15. Operational Off-Road Equipment 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 4 / 36 5.15.1. Unmitigated 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps 5.16.2. Process Boilers 5.17. User Defined 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated 5.18.2. Sequestration 5.18.2.1. Unmitigated 6. Climate Risk Detailed Report 6.1. Climate Risk Summary 6.2. Initial Climate Risk Scores 6.3. Adjusted Climate Risk Scores 6.4. Climate Risk Reduction Measures 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 5 / 36 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores 7.2. Healthy Places Index Scores 7.3. Overall Health & Equity Scores 7.4. Health & Equity Measures 7.5. Evaluation Scorecard 7.6. Health & Equity Custom Measures 8. User Changes to Default Data 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 6 / 36 1. Basic Project Information 1.1. Basic Project Information Data Field Value Project Name 15100 11115 Hemlock Operation LST Lead Agency — Land Use Scale Project/site Analysis Level for Defaults County Windspeed (m/s)2.80 Precipitation (days)6.80 Location 34.05176988719391, -117.47365223447954 County San Bernardino-South Coast City Fontana Air District South Coast AQMD Air Basin South Coast TAZ 5310 EDFZ 10 Electric Utility Southern California Edison Gas Utility Southern California Gas 1.2. Land Use Types Land Use Subtype Size Unit Lot Acreage Building Area (sq ft)Landscape Area (sq ft) Special Landscape Area (sq ft) Population Description Unrefrigerated Warehouse-No Rail 662 1000sqft 15.2 661,506 174,497 ——— Refrigerated Warehouse-No Rail 221 1000sqft 5.06 220,502 0.00 ——— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 7 / 36 User Defined Industrial 882 User Defined Unit 0.00 0.00 0.00 ——— Parking Lot 412 Space 3.71 0.00 0.00 ——— Other Asphalt Surfaces 12.5 Acre 12.5 0.00 0.00 ——— 1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected 2. Emissions Summary 2.4. Operations Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit.TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unmit.12.5 32.3 14.8 58.4 0.05 0.59 0.27 0.86 0.61 0.05 0.66 838 13,528 14,366 86.4 1.35 229 17,158 Daily, Winter (Max) —————————————————— Unmit.5.48 25.8 14.8 21.0 0.05 0.54 0.27 0.81 0.54 0.05 0.59 838 13,350 14,188 86.4 1.34 225 16,974 Average Daily (Max) —————————————————— Unmit.8.32 28.5 11.0 41.9 0.05 0.45 0.21 0.65 0.46 0.04 0.50 838 12,575 13,413 86.2 1.28 226 16,176 Annual (Max) —————————————————— Unmit.1.52 5.19 2.00 7.64 0.01 0.08 0.04 0.12 0.08 0.01 0.09 139 2,082 2,221 14.3 0.21 37.4 2,678 2.5. Operations Emissions by Sector, Unmitigated 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 8 / 36 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Mobile 4.09 3.53 6.82 13.4 0.02 0.02 0.27 0.29 0.02 0.05 0.07 —1,995 1,995 0.63 0.32 3.96 2,109 Area 6.82 27.5 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Total 12.5 32.3 14.8 58.4 0.05 0.59 0.27 0.86 0.61 0.05 0.66 838 13,528 14,366 86.4 1.35 229 17,158 Daily, Winter (Max) —————————————————— Mobile 3.86 3.28 7.13 14.4 0.02 0.02 0.27 0.29 0.02 0.05 0.07 —1,976 1,976 0.65 0.32 0.10 2,087 Area —21.2 ———————————————— Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Total 5.48 25.8 14.8 21.0 0.05 0.54 0.27 0.81 0.54 0.05 0.59 838 13,350 14,188 86.4 1.34 225 16,974 Average Daily —————————————————— Mobile 2.96 2.52 5.43 11.1 0.01 0.02 0.21 0.22 0.02 0.04 0.06 —1,527 1,527 0.50 0.25 1.32 1,615 Area 4.67 25.5 0.22 26.3 < 0.005 0.04 —0.04 0.05 —0.05 —108 108 < 0.005 0.01 —111 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 9 / 36 Energy 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —9,531 9,531 0.87 0.05 —9,568 Water ———————————391 1,340 1,731 40.2 0.97 —3,025 Waste ———————————447 0.00 447 44.7 0.00 —1,563 Refrig.————————————————225 225 Stationar y 0.15 0.13 0.38 0.34 < 0.005 0.02 —0.02 0.02 —0.02 —69.0 69.0 < 0.005 < 0.005 —69.2 Total 8.32 28.5 11.0 41.9 0.05 0.45 0.21 0.65 0.46 0.04 0.50 838 12,575 13,413 86.2 1.28 226 16,176 Annual —————————————————— Mobile 0.54 0.46 0.99 2.03 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —253 253 0.08 0.04 0.22 267 Area 0.85 4.66 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 Energy 0.10 0.05 0.90 0.76 0.01 0.07 —0.07 0.07 —0.07 —1,578 1,578 0.14 0.01 —1,584 Water ———————————64.7 222 287 6.66 0.16 —501 Waste ———————————74.0 0.00 74.0 7.39 0.00 —259 Refrig.————————————————37.2 37.2 Stationar y 0.03 0.02 0.07 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.4 11.4 < 0.005 < 0.005 —11.5 Total 1.52 5.19 2.00 7.64 0.01 0.08 0.04 0.12 0.08 0.01 0.09 139 2,082 2,221 14.3 0.21 37.4 2,678 4. Operations Emissions Details 4.1. Mobile Emissions by Land Use 4.1.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 10 / 36 Unrefrige Warehouse-No Rail 2.30 2.24 0.50 5.79 < 0.005 < 0.005 0.10 0.10 < 0.005 0.02 0.02 —397 397 0.12 0.06 1.08 418 Refrigera ted Warehou se-No Rail 0.95 0.92 0.21 2.38 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —163 163 0.05 0.02 0.45 172 User Defined Industrial 0.84 0.36 6.12 5.21 0.01 0.01 0.13 0.14 0.01 0.03 0.04 —1,435 1,435 0.46 0.23 2.43 1,519 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 4.09 3.53 6.82 13.4 0.02 0.02 0.27 0.29 0.02 0.05 0.07 —1,995 1,995 0.63 0.32 3.96 2,109 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail 2.16 2.10 0.54 6.38 < 0.005 < 0.005 0.10 0.10 < 0.005 0.02 0.02 —376 376 0.14 0.06 0.03 398 Refrigera ted Warehou se-No Rail 0.89 0.86 0.22 2.63 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —155 155 0.06 0.02 0.01 164 User Defined Industrial 0.80 0.32 6.38 5.37 0.01 0.02 0.13 0.14 0.01 0.03 0.05 —1,444 1,444 0.46 0.24 0.06 1,526 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 11 / 36 0.000.000.000.000.000.00—0.000.000.000.000.000.000.000.000.000.000.00Other Asphalt Surfaces Total 3.86 3.28 7.13 14.4 0.02 0.02 0.27 0.29 0.02 0.05 0.07 —1,976 1,976 0.65 0.32 0.10 2,087 Annual —————————————————— Unrefrige rated Warehou se-No Rail 0.29 0.28 0.07 0.86 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 —46.0 46.0 0.02 0.01 0.06 48.7 Refrigera ted Warehou se-No Rail 0.14 0.14 0.04 0.42 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 —22.6 22.6 0.01 < 0.005 0.03 23.9 User Defined Industrial 0.12 0.05 0.88 0.75 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 —184 184 0.06 0.03 0.13 195 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 0.00 0.00 0.00 0.00 Total 0.54 0.46 0.99 2.03 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 —253 253 0.08 0.04 0.22 267 4.2. Energy 4.2.1. Electricity Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 12 / 36 Unrefrige Warehouse-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————3,639 3,639 0.34 0.04 —3,660 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————3,639 3,639 0.34 0.04 —3,660 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————3,639 3,639 0.34 0.04 —3,660 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 13 / 36 0.00—0.000.000.000.00————————————Other Asphalt Surfaces Total ————————————3,639 3,639 0.34 0.04 —3,660 Annual —————————————————— Unrefrige rated Warehou se-No Rail ————————————0.00 0.00 0.00 0.00 —0.00 Refrigera ted Warehou se-No Rail ————————————602 602 0.06 0.01 —606 User Defined Industrial ————————————0.00 0.00 0.00 0.00 —0.00 Parking Lot ————————————0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ————————————0.00 0.00 0.00 0.00 —0.00 Total ————————————602 602 0.06 0.01 —606 4.2.3. Natural Gas Emissions By Land Use - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 14 / 36 4,041—0.010.364,0304,030—0.26—0.260.26—0.260.022.843.380.190.37Unrefrige rated Warehou se-No Refrigera ted Warehou se-No Rail 0.17 0.09 1.56 1.31 0.01 0.12 —0.12 0.12 —0.12 —1,862 1,862 0.16 < 0.005 —1,867 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —5,892 5,892 0.52 0.01 —5,908 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail 0.37 0.19 3.38 2.84 0.02 0.26 —0.26 0.26 —0.26 —4,030 4,030 0.36 0.01 —4,041 Refrigera ted Warehou se-No Rail 0.17 0.09 1.56 1.31 0.01 0.12 —0.12 0.12 —0.12 —1,862 1,862 0.16 < 0.005 —1,867 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 15 / 36 0.00—0.000.000.000.00—0.00—0.000.00—0.000.000.000.000.000.00Other Asphalt Surfaces Total 0.54 0.27 4.94 4.15 0.03 0.38 —0.38 0.38 —0.38 —5,892 5,892 0.52 0.01 —5,908 Annual —————————————————— Unrefrige rated Warehou se-No Rail 0.07 0.03 0.62 0.52 < 0.005 0.05 —0.05 0.05 —0.05 —667 667 0.06 < 0.005 —669 Refrigera ted Warehou se-No Rail 0.03 0.02 0.28 0.24 < 0.005 0.02 —0.02 0.02 —0.02 —308 308 0.03 < 0.005 —309 User Defined Industrial 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 —0.00 0.00 —0.00 —0.00 0.00 0.00 0.00 —0.00 Total 0.10 0.05 0.90 0.76 0.01 0.07 —0.07 0.07 —0.07 —975 975 0.09 < 0.005 —978 4.3. Area Emissions by Source 4.3.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 16 / 36 ————————————————18.9—Consum er Architect ural Coatings —2.29 ———————————————— Landsca pe Equipme nt 6.82 6.29 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Total 6.82 27.5 0.32 38.3 < 0.005 0.05 —0.05 0.07 —0.07 —158 158 0.01 0.01 —162 Daily, Winter (Max) —————————————————— Consum er Products —18.9 ———————————————— Architect ural Coatings —2.29 ———————————————— Total —21.2 ———————————————— Annual —————————————————— Consum er Products —3.45 ———————————————— Architect ural Coatings —0.42 ———————————————— Landsca pe Equipme nt 0.85 0.79 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 Total 0.85 4.66 0.04 4.79 < 0.005 0.01 —0.01 0.01 —0.01 —17.9 17.9 < 0.005 < 0.005 —18.4 4.4. Water Emissions by Land Use 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 17 / 36 4.4.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————293 1,009 1,302 30.2 0.73 —2,272 Refrigera ted Warehou se-No Rail ———————————97.7 332 429 10.1 0.24 —753 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————391 1,340 1,731 40.2 0.97 —3,025 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————293 1,009 1,302 30.2 0.73 —2,272 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 18 / 36 753—0.2410.142933297.7———————————Refrigera ted Warehou Rail User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————391 1,340 1,731 40.2 0.97 —3,025 Annual —————————————————— Unrefrige rated Warehou se-No Rail ———————————48.5 167 216 4.99 0.12 —376 Refrigera ted Warehou se-No Rail ———————————16.2 54.9 71.1 1.66 0.04 —125 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————64.7 222 287 6.66 0.16 —501 4.5. Waste Emissions by Land Use 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 19 / 36 4.5.2. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————335 0.00 335 33.5 0.00 —1,172 Refrigera ted Warehou se-No Rail ———————————112 0.00 112 11.2 0.00 —391 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————447 0.00 447 44.7 0.00 —1,563 Daily, Winter (Max) —————————————————— Unrefrige rated Warehou se-No Rail ———————————335 0.00 335 33.5 0.00 —1,172 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 20 / 36 391—0.0011.21120.00112———————————Refrigera ted Warehou Rail User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————447 0.00 447 44.7 0.00 —1,563 Annual —————————————————— Unrefrige rated Warehou se-No Rail ———————————55.5 0.00 55.5 5.55 0.00 —194 Refrigera ted Warehou se-No Rail ———————————18.5 0.00 18.5 1.85 0.00 —64.7 User Defined Industrial ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Parking Lot ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Other Asphalt Surfaces ———————————0.00 0.00 0.00 0.00 0.00 —0.00 Total ———————————74.0 0.00 74.0 7.39 0.00 —259 4.6. Refrigerant Emissions by Land Use 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 21 / 36 4.6.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Refrigera ted Warehou se-No Rail ————————————————225 225 Total ————————————————225 225 Daily, Winter (Max) —————————————————— Refrigera ted Warehou se-No Rail ————————————————225 225 Total ————————————————225 225 Annual —————————————————— Refrigera ted Warehou se-No Rail ————————————————37.2 37.2 Total ————————————————37.2 37.2 4.7. Offroad Emissions By Equipment Type 4.7.1. Unmitigated 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 22 / 36 Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.8. Stationary Emissions By Equipment Type 4.8.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Fire Pump 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Emergen cy Generato r 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Total 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 23 / 36 ——————————————————Daily, Winter (Max) Fire Pump 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Emergen cy Generato r 0.54 0.49 1.38 1.26 < 0.005 0.07 —0.07 0.07 —0.07 —252 252 0.01 < 0.005 —253 Total 1.08 0.98 2.75 2.51 < 0.005 0.14 —0.14 0.14 —0.14 —504 504 0.02 < 0.005 —505 Annual —————————————————— Fire Pump 0.01 0.01 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —5.71 5.71 < 0.005 < 0.005 —5.73 Emergen cy Generato r 0.01 0.01 0.03 0.03 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —5.71 5.71 < 0.005 < 0.005 —5.73 Total 0.03 0.02 0.07 0.06 < 0.005 < 0.005 —< 0.005 < 0.005 —< 0.005 —11.4 11.4 < 0.005 < 0.005 —11.5 4.9. User Defined Emissions By Equipment Type 4.9.1. Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme nt Type TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 24 / 36 Total —————————————————— Annual —————————————————— Total —————————————————— 4.10. Soil Carbon Accumulation By Vegetation Type 4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio n TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— Daily, Winter (Max) —————————————————— Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land Use TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Total —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 25 / 36 ——————————————————Daily, Winter (Max) Total —————————————————— Annual —————————————————— Total —————————————————— 4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily, Summer (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— Daily, Winter (Max) —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 26 / 36 ——————————————————Remove d Subtotal —————————————————— ——————————————————— Annual —————————————————— Avoided —————————————————— Subtotal —————————————————— Sequest ered —————————————————— Subtotal —————————————————— Remove d —————————————————— Subtotal —————————————————— ——————————————————— 5. Activity Data 5.9. Operational Mobile Sources 5.9.1. Unmitigated Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Unrefrigerated Warehouse-No Rail 734 64.2 25.8 196,126 367 32.1 12.9 98,063 Refrigerated Warehouse-No Rail 302 172 164 96,269 151 85.8 82.1 48,135 User Defined Industrial 562 128 103 158,529 281 63.9 51.6 79,264 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 27 / 36 5.10. Operational Area Sources 5.10.1. Hearths 5.10.1.1. Unmitigated 5.10.2. Architectural Coatings Residential Interior Area Coated (sq ft)Residential Exterior Area Coated (sq ft)Non-Residential Interior Area Coated (sq ft) Non-Residential Exterior Area Coated (sq ft) Parking Area Coated (sq ft) 0 0.00 1,323,012 441,004 42,466 5.10.3. Landscape Equipment Season Unit Value Snow Days day/yr 0.00 Summer Days day/yr 250 5.11. Operational Energy Consumption 5.11.1. Unmitigated Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr)CO2 CH4 N2O Natural Gas (kBTU/yr) Unrefrigerated Warehouse-No Rail 0.00 349 0.0330 0.0040 12,575,678 Refrigerated Warehouse-No Rail 3,809,555 349 0.0330 0.0040 5,808,956 User Defined Industrial 0.00 349 0.0330 0.0040 0.00 Parking Lot 0.00 349 0.0330 0.0040 0.00 Other Asphalt Surfaces 0.00 349 0.0330 0.0040 0.00 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 28 / 36 5.12. Operational Water and Wastewater Consumption 5.12.1. Unmitigated Land Use Indoor Water (gal/year)Outdoor Water (gal/year) Unrefrigerated Warehouse-No Rail 152,973,263 2,802,269 Refrigerated Warehouse-No Rail 50,991,088 0.00 User Defined Industrial 0.00 0.00 Parking Lot 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.13. Operational Waste Generation 5.13.1. Unmitigated Land Use Waste (ton/year)Cogeneration (kWh/year) Unrefrigerated Warehouse-No Rail 622 0.00 Refrigerated Warehouse-No Rail 207 0.00 User Defined Industrial 0.00 0.00 Parking Lot 0.00 0.00 Other Asphalt Surfaces 0.00 0.00 5.14. Operational Refrigeration and Air Conditioning Equipment 5.14.1. Unmitigated Land Use Type Equipment Type Refrigerant GWP Quantity (kg)Operations Leak Rate Service Leak Rate Times Serviced Refrigerated Warehouse-No Rail Cold storage User Defined 150 7.50 7.50 7.50 25.0 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 29 / 36 5.15. Operational Off-Road Equipment 5.15.1. Unmitigated Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor 5.16. Stationary Sources 5.16.1. Emergency Generators and Fire Pumps Equipment Type Fuel Type Number per Day Hours per Day Hours per Year Horsepower Load Factor Fire Pump Diesel 1.00 1.00 50.0 300 0.73 Emergency Generator Diesel 1.00 1.00 50.0 300 0.73 5.16.2. Process Boilers Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr)Daily Heat Input (MMBtu/day)Annual Heat Input (MMBtu/yr) 5.17. User Defined Equipment Type Fuel Type —— 5.18. Vegetation 5.18.1. Land Use Change 5.18.1.1. Unmitigated Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 30 / 36 5.18.1. Biomass Cover Type 5.18.1.1. Unmitigated Biomass Cover Type Initial Acres Final Acres 5.18.2. Sequestration 5.18.2.1. Unmitigated Tree Type Number Electricity Saved (kWh/year)Natural Gas Saved (btu/year) 6. Climate Risk Detailed Report 6.1. Climate Risk Summary Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100. Climate Hazard Result for Project Location Unit Temperature and Extreme Heat 24.4 annual days of extreme heat Extreme Precipitation 3.50 annual days with precipitation above 20 mm Sea Level Rise 0.00 meters of inundation depth Wildfire 6.13 annual hectares burned Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider different increments of sea level rise coupled with extreme storm events. Users may select from four model simulations to view the range in potential inundation depth for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 50 meters (m) by 50 m, or about 164 feet (ft) by 164 ft. 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 31 / 36 Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi. 6.2. Initial Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 0 0 N/A Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 0 0 N/A Wildfire 1 0 0 N/A Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A Air Quality Degradation 0 0 0 N/A The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures. 6.3. Adjusted Climate Risk Scores Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 3 1 1 3 Extreme Precipitation N/A N/A N/A N/A Sea Level Rise 1 1 1 2 Wildfire 1 1 1 2 Flooding N/A N/A N/A N/A Drought N/A N/A N/A N/A Snowpack Reduction N/A N/A N/A N/A 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 32 / 36 Air Quality Degradation 1 1 1 2 The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure. The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt. The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures. 6.4. Climate Risk Reduction Measures 7. Health and Equity Details 7.1. CalEnviroScreen 4.0 Scores The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. Indicator Result for Project Census Tract Exposure Indicators — AQ-Ozone 95.3 AQ-PM 93.5 AQ-DPM 78.3 Drinking Water 96.1 Lead Risk Housing 42.2 Pesticides 18.1 Toxic Releases 84.6 Traffic 79.6 Effect Indicators — CleanUp Sites 82.7 Groundwater 14.3 Haz Waste Facilities/Generators 94.4 Impaired Water Bodies 0.00 Solid Waste 87.1 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 33 / 36 Sensitive Population — Asthma 44.4 Cardio-vascular 55.1 Low Birth Weights 20.3 Socioeconomic Factor Indicators — Education 73.4 Housing 26.7 Linguistic 34.6 Poverty 51.4 Unemployment 51.3 7.2. Healthy Places Index Scores The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. Indicator Result for Project Census Tract Economic — Above Poverty 46.27229565 Employed 32.144232 Median HI 62.51764404 Education — Bachelor's or higher 30.92518927 High school enrollment 27.47337354 Preschool enrollment 9.149236494 Transportation — Auto Access 75.69613756 Active commuting 25.30476068 Social — 2-parent households 83.85730784 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 34 / 36 Voting 30.59155653 Neighborhood — Alcohol availability 69.20313102 Park access 26.03618632 Retail density 30.7583729 Supermarket access 43.14128064 Tree canopy 6.390350314 Housing — Homeownership 72.5009624 Housing habitability 80.9829334 Low-inc homeowner severe housing cost burden 33.8380598 Low-inc renter severe housing cost burden 97.78005903 Uncrowded housing 24.76581548 Health Outcomes — Insured adults 19.91530861 Arthritis 67.1 Asthma ER Admissions 64.4 High Blood Pressure 71.3 Cancer (excluding skin)74.5 Asthma 37.3 Coronary Heart Disease 66.7 Chronic Obstructive Pulmonary Disease 53.7 Diagnosed Diabetes 40.6 Life Expectancy at Birth 53.2 Cognitively Disabled 21.0 Physically Disabled 18.0 Heart Attack ER Admissions 49.4 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 35 / 36 Mental Health Not Good 35.7 Chronic Kidney Disease 55.3 Obesity 33.9 Pedestrian Injuries 62.8 Physical Health Not Good 37.9 Stroke 58.2 Health Risk Behaviors — Binge Drinking 36.9 Current Smoker 40.0 No Leisure Time for Physical Activity 38.5 Climate Change Exposures — Wildfire Risk 0.0 SLR Inundation Area 0.0 Children 32.5 Elderly 76.6 English Speaking 56.0 Foreign-born 61.6 Outdoor Workers 45.8 Climate Change Adaptive Capacity — Impervious Surface Cover 67.8 Traffic Density 81.5 Traffic Access 23.0 Other Indices — Hardship 66.3 Other Decision Support — 2016 Voting 50.4 15100 11115 Hemlock Operation LST Detailed Report, 3/16/2023 36 / 36 7.3. Overall Health & Equity Scores Metric Result for Project Census Tract CalEnviroScreen 4.0 Score for Project Location (a)71.0 Healthy Places Index Score for Project Location (b)40.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535)No Project Located in a Low-Income Community (Assembly Bill 1550)No Project Located in a Community Air Protection Program Community (Assembly Bill 617)No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state. 7.4. Health & Equity Measures No Health & Equity Measures selected. 7.5. Evaluation Scorecard Health & Equity Evaluation Scorecard not completed. 7.6. Health & Equity Custom Measures No Health & Equity Custom Measures created. 8. User Changes to Default Data Screen Justification Operations: Vehicle Data Trip rates based on Project traffic study Operations: Fleet Mix Fleet mix adjusted to separate passenger vehicles and trucks. Operations: Energy Use Per Fontana GNP, solar will be installed to supply 100% of the non-refrigeration power needs. Operations: Refrigerants As of 1 January 2022, new commercial refrigeration equipment may not use refrigerants with a GWP of 150 or greater. 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report APPENDIX 3.3: TRU CALCULATIONS TRU Type 2 Unit Annual Number of Units 38 ROG NOX CO SOX PM10 PM2.5 MT CO2 Operating Time Each Unit 4 TRU - Instate Trailer TRU 2.61 2.40 0.34 0.00 0.07 0.07 500.52 TRU - Instate Truck TRU 3.46 4.43 0.38 0.00 0.23 0.21 698.49 TRU Type 3 TRU - Out-of-State Genset TRU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Number of Units 45 TRU - Instate Trailer TRU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Operating Time Each Unit 4 Total 6.07 6.83 0.71 0.00 0.30 0.28 1199.02 TRU Type 5 Number of Units 0 166 Operating Time Each Unit 4 TRU Type 2 Number of Units 0 Operating Time Each Unit 4 Emissions Pounds per Day TRU Emission Calculation The TRU calculations are based on the 2017 Offroad Emissions model, version 1.0.1 (Orion), developed by the California Air Resources Board. The following parameters were used to generate the emissions database: Region: County Scenario: All Adopted Rules – Exhaust Vehicle Classification: Types – All TRU Types Orion does not provide emission rates per hour or mile as with the on-road emission model and only provides emission inventories. Emission results are produced in tons per day while all activity, fuel consumption and horsepower hours were reported at annual levels. The emission inventory is based on specific assumptions including the average horsepower rating of specific types of equipment and the hours of operation annually. These assumptions are not always consistent with assumptions used in the modeling of project level emissions. Therefore, the emissions inventory was converted into emission rates to accurately calculate emissions from TRU operation associated with project level details. This was accomplished by converting the annual horsepower hours to daily operational characteristics and converting the daily emission levels into hourly emission rates based on the total emission of each criteria pollutant by equipment type and the average daily hours of operation. Total Two Way Truck Trips 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report This page intentionally left blank 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report APPENDIX 3.4: SCAQMD AMICUS BRIEF 11115 Hemlock Avenue Air Quality Impact Analysis 15100-03 AQ Report This page intentionally left blank