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Home My WebLink AboutApp L WQMPWater Quality Management Plan For: Slover Ave Industrial Project SLOVER AVENUE & CATAWBA AVENUE WQMP# N/A Prepared for: Seefried Industrial Properties 2321 Rosecrans Avenue El Segundo, CA 90245 310-536-7900 Prepared by: DRC Engineering Inc. 160 South Old Springs Road, Suite 210 Anaheim Hills, CA 92808 DRC Project Number 22-305 Submittal Date: 08/01/2023 Revision Date: Approval Date:_____________________ Water Quality Management Plan (WQMP) Owner’s Certification Project Owner’s Certification This Water Quality Management Plan (WQMP) has been prepared for Seefried Industrial Properties by DRC Engineering Inc.. The WQMP is intended to comply with the requirements of the City of Fontana and the NPDES Areawide Stormwater Program requiring the preparation of a WQMP. The undersigned, while it owns the subject property, is responsible for the implementation of the provisions of this plan and will ensure that this plan is amended as appropriate to reflect up-to-date conditions on the site consistent with San Bernardino County’s Municipal Storm Water Management Program and the intent of the NPDES Permit for San Bernardino County and the incorporated cities of San Bernardino County within the Santa Ana Region. Once the undersigned transfers its interest in the property, its successors in interest and the city/county shall be notified of the transfer. The new owner will be informed of its responsibility under this WQMP. A copy of the approved WQMP shall be available on the subject site in perpetuity. “I certify under a penalty of law that the provisions (implementation, operation, maintenance, and funding) of the WQMP have been accepted and that the plan will be transferred to future successors.” . Project Data Permit/Application Number(s): TBD Grading Permit Number(s): TBD Tract/Parcel Map Number(s): Lot 841 Parcel 1-6 Building Permit Number(s): TBD CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract): 0237-111-03, 04, 36, 37, 22, 19, 20, 40: Portion of Tract (Lot 841) Owner’s Signature Owner Name: Dan Bick Title Sr. Vice President Development Company Seefried Industrial Properties Address 2321 Rosecrans Avenue, El Segundo, CA 90245 Email danbick@seefriedproperties.com Telephone # 310-536-7900 Signature Date Water Quality Management Plan (WQMP) Contents Preparer’s Certification Project Data Permit/Application Number(s): TBD Grading Permit Number(s): TBD Tract/Parcel Map Number(s): Lot 841 Parcel 1-6 Building Permit Number(s): TBD CUP, SUP, and/or APN (Specify Lot Numbers if Portions of Tract): 0237-111-03, 04, 36, 37, 22, 19, 20, 40: Portion of Tract (Lot 841) “The selection, sizing and design of stormwater treatment and other stormwater quality and quantity control measures in this plan were prepared under my oversight and meet the requirements of Regional Water Quality Control Board Order No. R8-2010-0036.” Engineer: Brian Anderson PE Stamp Below Title Vice President Company DRC Engineering Inc. Address 160 South Old Springs Road Suite 210, Anaheim Hills, CA 92808 Email banderson@drc-eng.com Telephone # 714-685-6860 Signature Date Water Quality Management Plan (WQMP) Contents ii Table of Contents Section 1 Discretionary Permits ......................................................................................... 1-1 Section 2 Project Description ............................................................................................... 2-1 2.1 Project Information ........................................................................................ 2-1 2.2 Property Ownership / Management .............................................................. 2-2 2.3 Potential Stormwater Pollutants ................................................................... 2-3 2.4 Water Quality Credits ........ ……………………………………………………………………………. 2-4 Section 3 Site and Watershed Description ......................................................................... 3-1 Section 4 Best Management Practices ................................................................................ 4-1 4.1 Source Control BMP ....................................................................................... 4-1 4.1.1 Pollution Prevention ................................................................................... 4-1 4.1.2 Preventative LID Site Design Practices ....................................................... 4-6 4.2 Project Performance Criteria......................................................................... 4-7 4.3 Project Conformance Analysis ....................................................................... 4-12 4.3.1 Site Design Hydrologic Source Control BMP .............................................. 4-14 4.3.2 Infiltration BMP .......................................................................................... 4-16 4.3.3 Harvest and Use BMP .................................................................................. 4-18 4.3.4 Biotreatment BMP....................................................................................... 4.19 4.3.5 Conformance Summary ............................................................................... 4-23 4.3.6 Hydromodification Control BMP ............................................................... 4-24 4.4 Alternative Compliance Plan (if applicable) ................................................. 4-25 Section 5 Inspection & Maintenance Responsibility Post Construction BMPs ................. 5-1 Section 6 Site Plan and Drainage Plan ................................................................................ 6-1 6.1. Site Plan and Drainage Plan.......................................................................... 6-1 6.2 Electronic Data Submittal ............................................................................. 6-1 Forms Form 1-1 Project Information ............................................................................................... 1-1 Form 2.1-1 Description of Proposed Project ......................................................................... 2-1 Form 2.2-1 Property Ownership/Management ..................................................................... 2-2 Form 2.3-1 Pollutants of Concern ......................................................................................... 2-3 Form 2.4-1 Water Quality Credits ......................................................................................... 2-4 Form 3-1 Site Location and Hydrologic Features ................................................................. 3-1 Form 3-2 Hydrologic Characteristics .................................................................................... 3-2 Form 3-3 Watershed Description .......................................................................................... 3-3 Form 4.1-1 Non-Structural Source Control BMP ................................................................... 4-2 Form 4.1-2 Structural Source Control BMP .......................................................................... 4-4 Form 4.1-3 Site Design Practices Checklist ........................................................................... 4-6 Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume ............................. 4-7 Form 4.2-2 Summary of HCOC Assessment .......................................................................... 4-8 Form 4.2-3 HCOC Assessment for Runoff Volume ............................................................... 4-9 Form 4.2-4 HCOC Assessment for Time of Concentration .................................................. 4-10 Water Quality Management Plan (WQMP) Contents iii Form 4.2-5 HCOC Assessment for Peak Runoff .................................................................... 4-11 Form 4.3-1 Infiltration BMP Feasibility ................................................................................ 4-13 Form 4.3-2 Site Design Hydrologic Source Control BMP ..................................................... 4-14 Form 4.3-3 Infiltration LID BMP ........................................................................................... 4-17 Form 4.3-4 Harvest and Use BMP ......................................................................................... 4-18 Form 4.3-5 Selection and Evaluation of Biotreatment BMP ................................................ 4-19 Form 4.3-6 Volume Based Biotreatment – Bioretention and Planter Boxes w/Underdrains 4-20 Form 4.3-7 Volume Based Biotreatment- Constructed Wetlands and Extended Detention 4-21 Form 4.3-8 Flow Based Biotreatment ................................................................................... 4-22 Form 4.3-9 Conformance Summary and Alternative Compliance Volume Estimate .......... 4-23 Form 4.3-10 Hydromodification Control BMP ..................................................................... 4-24 Form 5-1 BMP Inspection and Maintenance ........................................................................ 5-1 Appendix A - Vicinity Map, Exhibits, Calculations Appendix B - BMP Calculations and Manufacturer Cutsheets Appendix C - Education Materials, BMP Fact Sheets Water Quality Management Plan (WQMP) 1-1 Section 1 Discretionary Permit(s) Form 1-1 Project Information Project Name Slover Avenue Industrial Project Owner Contact Name: Dan Bick Mailing Address: 2321 Rosecrans Avenue, El Segundo, CA 90245 E-mail Address: danbick@seefriedpropertie s.com Telephone: 310-536-7900 Permit/Application Number(s): TBD Tract/Parcel Map Number(s): Lot 841 Parcel 1-6 Additional Information/ Comments: Description of Project: The project site will redevelop approximately 18 acres of an existing residential and commercial development with a proposed commercial/industrial building, trucking dock, and parking lots. Construction activities include the construction of new buildings, parking lot pavement, concrete curbs, driveways, walkways, landscaping planters and related utilities. The existing site is a combination of developed residential and commercial. The commercial area on the western half of the site drains south-west towards Catawba Ave. The combination of residential and commercial properties on the eastern half of the site, drains south-west into a gutter, that drains south to the bottom of the site, and then west towards Catawba Ave. The proposed development will be consistent with the existing condition in terms of the overall drainage pattern. The proposed project development will collect drainage by grate inlets and catch basins, then piped via an onsite underground storm drain system. The storm drain system will discharge to one of two proposed onsite underground infiltration basins to meet the regional LID structural treatment control best management practice (BMP). The proposed underground infiltration system will collect the water from a storm which will then percolate through the ground. Large storm events will be piped to the gutter on Catawba Ave. The project stormwater will utilize two underground infiltration basins (ADS StormTech MC- 7200 chambers) to address the regional LID structural treatment control best management practice (BMP). Water quality pre-treatment will be handled by four Barracuda ADS Max Units, one at each end of the infiltration system. Outlet of the treated stormwater will discharge to a proposed underground infiltration basin which maximum outlet flow rate is equal or less than the existing condition 100-year 24-hour storm event. The infiltration basin will be used for LID. The northern basin volume is 71,194 cuft. The southern basin volume is 31,654cuft. Refer to Appendix B for more details. Water Quality Management Plan (WQMP) 1-2 Provide summary of Conceptual WQMP conditions (if previously submitted and approved). Attach complete copy. Water Quality Management Plan (WQMP) 2-1 Section 2 Project Description 2.1 Project Information This section of the WQMP should provide the information listed below. The information provided for Conceptual/ Preliminary WQMP should give sufficient detail to identify the major proposed site design and LID BMPs and other anticipated water quality features that impact site planning. Final Project WQMP must specifically identify all BMP incorporated into the final site design and provide other detailed information as described herein. The purpose of this information is to help determine the applicable development category, pollutants of concern, watershed description, and long term maintenance responsibilities for the project, and any applicable water quality credits. This information will be used in conjunction with the information in Section 3, Site Description, to establish the performance criteria and to select the LID BMP or other BMP for the project or other alternative programs that the project will participate in, which are described in Section 4. Form 2.1-1 Description of Proposed Project 1 Development Category (Select all that apply): Significant re-development involving the addition or replacement of 5,000 ft2 or more of impervious surface on an already developed site New development involving the creation of 10,000 ft2 or more of impervious surface collectively over entire site Automotive repair shops with standard industrial classification (SIC) codes 5013, 5014, 5541, 7532- 7534, 7536-7539 Restaurants (with SIC code 5812) where the land area of development is 5,000 ft2 or more Hillside developments of 5,000 ft2 or more which are located on areas with known erosive soil conditions or where the natural slope is 25 percent or more Developments of 2,500 ft2 of impervious surface or more adjacent to (within 200 ft) or discharging directly into environmentally sensitive areas or waterbodies listed on the CWA Section 303(d) list of impaired waters. Parking lots of 5,000 ft2 or more exposed to storm water Retail gasoline outlets that are either 5,000 ft2 or more, or have a projected average daily traffic of 100 or more vehicles per day Non-Priority / Non-Category Project May require source control LID BMPs and other LIP requirements. Please consult with local jurisdiction on specific requirements. 2 Project Area (ft2): 780,160 SF 3 Number of Dwelling Units: N/A 4 SIC Code: 4225 5 Is Project going to be phased? Yes No If yes, ensure that the WQMP evaluates each phase as a distinct DA, requiring LID BMPs to address runoff at time of completion. 6 Does Project include roads? Yes No If yes, ensure that applicable requirements for transportation projects are addressed (see Appendix A of TGD for WQMP) Water Quality Management Plan (WQMP) 2-2 2.2 Property Ownership/Management Describe the ownership/management of all portions of the project and site. State whether any infrastructure will transfer to public agencies (City, County, Caltrans, etc.) after project completion. State if a homeowners or property owners association will be formed and be responsible for the long-term maintenance of project stormwater facilities. Describe any lot-level stormwater features that will be the responsibility of individual property owners. Form 2.2-1 Property Ownership/Management Describe property ownership/management responsible for long-term maintenance of WQMP stormwater facilities: The site is being developed by the owner, Seefried Industrial Properties. Stormwater facilities and source control measures on the proposed development will be operated and maintained by the owner. Refer to section 5.0 of this WQMP for entities that will be responsible for implementing this WQMP. Water Quality Management Plan (WQMP) 2-3 2.3 Potential Stormwater Pollutants Determine and describe expected stormwater pollutants of concern based on land uses and site activities (refer to Table 3-3 in the TGD for WQMP). Form 2.3-1 Pollutants of Concern Pollutant Please check: E=Expected, N=Not Expected Additional Information and Comments Pathogens (Bacterial / Virus) E N Bacteria and viruses are ubiquitous microorganisms that thrive under certain environmental conditions. Their proliferation is typically caused by the transport of animal or human fecal wastes from the watershed. Water, containing excessive bacteria and viruses, can alter the aquatic habitat and create a harmful environment for humans and aquatic life. Also, the decomposition of excess organic waste causes increased growth of undesirable organisms in the water. Nutrients - Phosphorous E N Nutrients are inorganic substances. Excessive discharge of nutrients to water bodies and streams causes entrophication, where aquatic plants and algae growth can lead to excessive decay of organic matter in the water body, loss of oxygen in the water, release of toxins in sediment, and the eventual depth of aquatic organisms. Primary sources of nutrients in urban runoff are fertilizers and eroded soils. Nutrients - Nitrogen E N (See Nutrients - Phosphorous) Noxious Aquatic Plants E N Not Applicable Sediment E N Sediments are solid materials that are eroded from the land surface. Sediments can increase turbidity, clog fish gills, reduce spawning habitat, lower survival rates of young aquatic organisms, smother botthem dwelling organisms, and suppress aquatic vegetation growth. Metals E N The primary source of metal pollution in stormwater is typically commercially available metals and metal products, as well as emissions from brake pad and tire tread wear associated with driving. Primary Metals of concern include cadmium, chromium, copper, lead, mercury, and zinc. Lead and chromium have been used as corrosion inhibitors in primer coatings and cooling tower systems. Metals are also raw material components in non-metal products such as fuels, adhesives, paints, and other coatings. At low concentrations naturally occurring in soil, metals may not be toxic. However, at higher concentrations, certain metals can be toxic to aquatic life. Humans can be impacted from contaminated ground water resources, and bio accumulation of metals in fish and shellfish. Environmental concerns, regarding the potential for release of metals to the Water Quality Management Plan (WQMP) 2-4 environment, have already led to restricted metal usage in certain applications. Oil and Grease E N Oil and grease in water bodies decreases the aesthetic value of the water body, as well as the water quality. Primary sources of oil and grease are petroleum hydrocarbon products, motor products from leaking vehicles, esters, oils, fats, waxes, and high molecular-weight fatty acids. Trash/Debris E N Trash (such as paper, plastic, polystyrene packing foam, and aluminum materials) and biodegradable organic matter (such as leaves, grass cuttings, and food waste) are general waste products on the landscape. The presence of trash and debris may have a significant impact on the recreational value of a water body and aquatic habitat. Trash also impacts water quality by increasing biochemical oxygen demand. Pesticides / Herbicides E N Pesticides and herbicides are organic compounds used to destroy, prevent, mitigate insects, rodents, fungi, weeds, and other undesirable pests. Pesticides and herbicides can be washed off urban landscapes and buildings during storm events. Organic Compounds E N Organic compounds are carbon-based. Commercially available or nautrally occurring organic compounds are found in solvents and hydrocarbons. Organic compounds can, at certain concentrations, indirectly or directly constitute a hazard to life or health. When rinsing off objects, toxic levels of solvents and cleaning compounds can be discharged to storm drains. Dirt, grease, and grime retained in the cleaning fluid or rinse water may also absorb levels of organic compounds that are harmful or hazardous to aquatic life. Sources of organic compounds may include waste handling areas and vehicle or landscape maintenance areas. Other: E N Other: E N Other: E N Other: E N Other: E N Water Quality Management Plan (WQMP) 2-5 2.4 Water Quality Credits A water quality credit program is applicable for certain types of development projects if it is not feasible to meet the requirements for on-site LID. Proponents for eligible projects, as described below, can apply for water quality credits that would reduce project obligations for selecting and sizing other treatment BMP or participating in other alternative compliance programs. Refer to Section 6.2 in the TGD for WQMP to determine if water quality credits are applicable for the project. Form 2.4-1 Water Quality Credits 1 Project Types that Qualify for Water Quality Credits: Select all that apply Redevelopment projects that reduce the overall impervious footprint of the project site. [Credit = % impervious reduced] Higher density development projects Vertical density [20%] 7 units/ acre [5%] Mixed use development, (combination of residential, commercial, industrial, office, institutional, or other land uses which incorporate design principles that demonstrate environmental benefits not realized through single use projects) [20%] Brownfield redevelopment (redevelop real property complicated by presence or potential of hazardous contaminants) [25%] Redevelopment projects in established historic district, historic preservation area, or similar significant core city center areas [10%] Transit-oriented developments (mixed use residential or commercial area designed to maximize access to public transportation) [20%] In-fill projects (conversion of empty lots & other underused spaces < 5 acres, substantially surrounded by urban land uses, into more beneficially used spaces, such as residential or commercial areas) [10%] Live-Work developments (variety of developments designed to support residential and vocational needs) [20%] 2 Total Credit % 0 (Total all credit percentages up to a maximum allowable credit of 50 percent) Description of Water Quality Credit Eligibility (if applicable) Water Quality Management Plan (WQMP) 3-1 Section 3 Site and Watershed Description Describe the project site conditions that will facilitate the selection of BMP through an analysis of the physical conditions and limitations of the site and its receiving waters. Identify distinct drainage areas (DA) that collect flow from a portion of the site and describe how runoff from each DA (and sub-watershed DMAs) is conveyed to the site outlet(s). Refer to Section 3.2 in the TGD for WQMP. The form below is provided as an example. Then complete Forms 3.2 and 3.3 for each DA on the project site. If the project has more than one drainage area for stormwater management, then complete additional versions of these forms for each DA / outlet. Form 3-1 Site Location and Hydrologic Features Site coordinates take GPS measurement at approximate center of site Latitude 34.0621° Longitude -117.4561° Thomas Bros Map page 604 1 San Bernardino County climatic region: Valley Mountain 2 Does the site have more than one drainage area (DA): Yes No If no, proceed to Form 3-2. If yes, then use this form to show a conceptual schematic describing DMAs and hydrologic feature connecting DMAs to the site outlet(s). An example is provided below that can be modified for proposed project or a drawing clearly showing DMA and flow routing may be attached Conveyance Briefly describe on-site drainage features to convey runoff that is not retained within a DMA DMA 1 & DMA 2 Storm water will be collected through roof drains and grate inlets/catch basins. All flow will be collected by a private storm drain system, and will discharge to an onsite infiltration basin to address regional LID structural treatment control best management practice (BMP). Large storm events with water volume in excess of infiltration basin design capacity, will outfall to the gutter on Catawba Ave. Outlet 1 DMA 1 DMA 2 Water Quality Management Plan (WQMP) 3-2 Form 3-2 Existing Hydrologic Characteristics for Drainage Area 1 For Drainage Area 1’s sub-watershed DMA, provide the following characteristics DMA A DMA B DMA C DMA D 1 DMA drainage area (ft2) 780,160 2 Existing site impervious area (ft2) 251,777 3 Antecedent moisture condition For desert areas, use http://www.sbcounty.gov/dpw/floodcontrol/pdf/2 0100412_map.pdf II 4 Hydrologic soil group Refer to Watershed Mapping Tool – http://permitrack.sbcounty.gov/wap/ A 5 Longest flowpath length (ft) 965 6 Longest flowpath slope (ft/ft) .0113 7 Current land cover type(s) Select from Fig C-3 of Hydrology Manual Residential or Commercial 8 Pre-developed pervious area condition: Based on the extent of wet season vegetated cover good >75%; Fair 50-75%; Poor <50% Attach photos of site to support rating Good Water Quality Management Plan (WQMP) 3-3 Form 3-3 Watershed Description for Drainage Area Receiving waters Refer to Watershed Mapping Tool - http://permitrack.sbcounty.gov/wap/ See ‘Drainage Facilities” link at this website · 42” RCP Catawba Avenue 250’ south of site. · San Sevaine Channel · Declez Channel · Santa Ana River Reach 3 · Santa Ana River Applicable TMDLs Refer to Local Implementation Plan · Indicator Bacteria 303(d) listed impairments Refer to Local Implementation Plan and Watershed Mapping Tool – http://permitrack.sbcounty.gov/wap/ and State Water Resources Control Board website – http://www.waterboards.ca.gov/santaana/water_iss ues/programs/tmdl/index.shtml · Declez Channel: None · San Sevaine Channel: None · Santa Ana River Reach 3: Indicator Bacteria Environmentally Sensitive Areas (ESA) Refer to Watershed Mapping Tool – http://permitrack.sbcounty.gov/wap/ · N/A Unlined Downstream Water Bodies Refer to Watershed Mapping Tool – http://permitrack.sbcounty.gov/wap/ · Santa Ana River, Reach 3 · Santa Ana River (All Reaches) Hydrologic Conditions of Concern Yes Complete Hydrologic Conditions of Concern (HCOC) Assessment. Include Forms 4.2-2 through Form 4.2-5 and Hydromodification BMP Form 4.3-10 in submittal No Watershed–based BMP included in a RWQCB approved WAP Yes Attach verification of regional BMP evaluation criteria in WAP • More Effective than On-site LID • Remaining Capacity for Project DCV • Upstream of any Water of the US • Operational at Project Completion • Long-Term Maintenance Plan No Water Quality Management Plan (WQMP) 4-1 Section 4 Best Management Practices (BMP) 4.1 Source Control BMP 4.1.1 Pollution Prevention Non-structural and structural source control BMP are required to be incorporated into all new development and significant redevelopment projects. Form 4.1-1 and 4.1-2 are used to describe specific source control BMPs used in the WQMP or to explain why a certain BMP is not applicable. Table 7-3 of the TGD for WQMP provides a list of applicable source control BMP for projects with specific types of potential pollutant sources or activities. The source control BMP in this table must be implemented for projects with these specific types of potential pollutant sources or activities. The preparers of this WQMP have reviewed the source control BMP requirements for new development and significant redevelopment projects. The preparers have also reviewed the specific BMP required for project as specified in Forms 4.1-1 and 4.1-2. All applicable non-structural and structural source control BMP shall be implemented in the project. Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 2 Fo r m 4 . 1 - 1 N o n - S t r u c t u r a l S o u r c e C o n t r o l B M P s Id e n t i f i e r Na m e Ch e c k O n e De s c r i b e B M P I m p l e m e n t a t i o n O R , if n o t a p p l i c a b l e , s t a t e r e a s o n In c l u d e d No t Ap p l i c a b l e N1 Ed u c a t i o n o f P r o p e r t y O w n e r s , T e n a n t s an d O c c u p a n t s o n S t o r m w a t e r B M P s Th e p r o p e r t y o w n e r s h a l l p r o v i d e e n v i r o n m e n t a l a w a r en e s s e d u c a t i o n m a t e r i a l s . T h e pr o p e r t y o w n e r s h a l l p r o v i d e t h e e d u c a t i o n a l m a t e r i al s t o t e n a n t s . N2 A c t i v i t y R e s t r i c t i o n s Co n d i t i o n s , C o v e n a n t s , a n d R e s t r i c t i o n ( C C & R s ) s h a l l b e r e q u i r e d f o r t h e p u r p o s e o f wa t e r q u a l i t y p r o t e c t i o n . P e s t i c i d e a p p l i c a t i o n i n c o m m o n a r e a s m u s t b e p e r f o r m e d b y an a p p l i c a t o r c e r t i f i e d b y t h e C a l i f o r n i a D e p a r t m e n t o f P e s t i c i d e R e g u l a t i o n . N3 L a n d s c a p e M a n a g e m e n t B M P s Pr o j e c t p l a n d e s i g n s s h o u l d c o n s e r v e n a t u r a l a r e a s to t h e e x t e n t p o s s i b l e , m a x i m i z e na t u r a l w a t e r s t o r a g e a n d i n f i l t r a t i o n o p p o r t u n i t i e s, a n d p r o t e c t s l o p e s a n d c h a n n e l s . Pl a n t s s h o u l d b e g r o u p e d w i t h s i m i l a r w a t e r r e q u i r e me n t s i n o r d e r t o r e d u c e e x c e s s ir r i g a t i o n r u n o f f a n d p r o m o t e s u r f a c e f i l t r a t i o n . La n d s c a p i n g s h a l l c o r r e l a t e t o t h e cl i m a t e , s o i l , r e l a t e d n a t u r a l r e s o u r c e s a n d e x i s t i ng v e g e t a t i o n o f t h e s i t e , a s w e l l a s t h e ty p e o f d e v e l o p m e n t p r o p o s e d . O n g o i n g m a i n t e n a n c e co n s i s t e n t w i t h C o u n t y Ad m i n i s t r a t i v e D e s i g n G u i d e l i n e s ( a v a i l a b l e a t h t t p :/ / w w w . c o . s a n - be r n a r d i n o . c a . u s / l a n d u s e s e r v i c e s / I n f o r m a t i o n a l % 2 0 H a nd o u t s / A d m i n s t r a t i v e %2 0 D e s i g n % 2 0 G u i d e l i n e s - J a n % 2 0 2 0 0 2 . p d f ) o r l o c a l e q u iv a l e n t , p l u s f e r t i l i z e r a n d pe s t i c i d e u s a g e c o n s i s t e n t w i t h t h e i n s t r u c t i o n s c o nt a i n e d o n p r o d u c t l a b e l s a n d w i t h th e r e g u l a t i o n s a d m i n i s t e r e d b y t h e S t a t e D e p a r t m e n t o f P e s t i c i d e R e g u l a t i o n s h a l l b e im p l e m e n t e d . H i l l s i d e a r e a s s h a l l b e l a n d s c a p e d w i t h d e e p - r o o t e d , d r o u g h t t o l e r a n t pl a n t s p e c i e s f o r e r o s i o n c o n t r o l , s a t i s f a c t o r y t o th e l o c a l p e r m i t t i n g a u t h o r i t y . Fo r a d d i t i o n a l i n f o r m a t i o n , s e e C A S Q A B M P S D - 1 0 , S i te D e s i g n & L a n d s c a p e P l a n n i n g , an d S D - 1 2 , E f f i c i e n t I r r i g a t i o n , i n c l u d e d i n A t t a c h me n t F a n d t h e I n s p e c t i o n a n d Ma i n t e n a n c e P r o g r a m t a b l e i n S e c t i o n 4 . 0 f o r d e t a i l s. N4 B M P M a i n t e n a n c e Th e e n t i t y o r i n d i v i d u a l i n d i c a t e d i n S e c t i o n 2 . 2 o f t h i s d o c u m e n t s h a l l b e r e s p o n s i b l e f o r th e i m p l e m e n t a t i o n a n d m a i n t e n a n c e o f a l l s t r u c t u r a l B M P f a c i l i t i e s N5 Ti t l e 2 2 C C R C o m p l i a n c e (H o w d e v e l o p m e n t w i l l c o m p l y ) Co m p l i a n c e w i t h T i t l e 2 2 o f C a l i f o r n i a C o d e o f R e g u la t i o n s ( C C R ) a n d r e l e v a n t s e c t i o n s o f th e C a l i f o r n i a H e a l t h & S a f e t y C o d e r e g a r d i n g t h e h az a r d o u s w a s t e m a n a g e m e n t i s en f o r c e d b y C o u n t y E n v o r o n m e n t a l H e a l t h o n b e h a l f o f t h e S t a t e . S e e N 9 , H a z a r d o u s Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 3 Fo r m 4 . 1 - 1 N o n - S t r u c t u r a l S o u r c e C o n t r o l B M P s Ma t e r i a l s D i s c l o s u r e C o m p l i a n c e , f o r h o w t h e d e v e l o pm e n t w i l l c o m p l y w i t h th e a p p l i c a b l e h a z a r d o u s w a s t e m a n a g e m e n t s e c t i o n ( s ) o f T i t l e 2 2 . N6 L o c a l W a t e r Q u a l i t y O r d i n a n c e s Th e P e r m i t t e e s , u n d e r t h e W a t e r Q u a l i t y O r d i n a n c e , ma y i s s u e p e r m i t s t o en s u r e c l e a n s t o r m w a t e r d i s c h a r g e s f r o m a r e a s o f c o nc e r n t o p u b l i c p r o p e r t i e s . N7 S p i l l C o n t i n g e n c y P l a n Te n a n t s s h o u l d f o l l o w C i t y o f F o n t a n a ’ s r e q u i r e m e n t o n h a z a r d o u s w a s t e ha n d l i n g . S e e B M P S C - 1 1 , S p i l l P r e v e n t i o n , C o n t r o l , a n d C l e a n u p . N8 U n d e r g r o u n d S t o r a g e T a n k C o m p l i a n c e No t p r e s e n t o n t h i s s i t e . N9 Ha z a r d o u s M a t e r i a l s D i s c l o s u r e Co m p l i a n c e Th e C i t y o f F o n t a n a a n d S a n B e r n a r d i n o C o u n t y F i r e Ha z m a t e n f o r c e a n d c o o r d i n a t e t h e ma n a g e m e n t o f h a z a r d o u s m a t e r i a l s Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 4 Fo r m 4 . 1 - 1 N o n - S t r u c t u r a l S o u r c e C o n t r o l B M P s Id e n t i f i e r N a m e Ch e c k O n e De s c r i b e B M P I m p l e m e n t a t i o n O R , if n o t a p p l i c a b l e , s t a t e r e a s o n In c l u d e d No t Ap p l i c a b l e N1 0 U n i f o r m F i r e C o d e I m p l e m e n t a t i o n Co m p l i a n c e w i t h A r t i c l e 8 0 o f t h e U n i f o r m F i r e C o d e t o b e e n f o r c e d b y t h e F i r e Pr o t e c t i o n D i s t r i c t o f F o n t a n a . N1 1 L i t t e r / D e b r i s C o n t r o l P r o g r a m Te n a n t s s h a l l b e r e s p o n s i b l e f o r c o n t r a c t i n g a c o m p an y t o p r o v i d e s w e e p i n g th e p r i v a t e s t r e e t a n d p a r k i n g l o t a t l e a s t t w i c e a nn u a l l y , p r i o r t o t h e s t o r m se a s o n i n t h e l a t e s u m m e r o r e a r l y f a l l , t o r e d u c e th e a m o u n t o f s e d i m e n t , ga r d e n w a s t e , a n d t r a s h , e n t e r i n g t h e s t o r m d r a i n s ys t e m s . F o r a d d i t i o n a l in f o r m a t i o n , s e e C A S Q A B M P S C - 3 4 , W a s t e H a n d l i n g a n d D i s p o s a l , a n d S C - 4 3 , Pa r k i n g / S t o r a g e A r e a M a i n t e n a n c e , i n c l u d e d i n A t t a c hm e n t F a n d t h e In s p e c t i o n a n d M a i n t e n a n c e P r o g r a m t a b l e i n S e c t i o n 4 . 0 . N1 2 E m p l o y e e T r a i n i n g Ow n e r s s h a l l r e q u i r e o p e r a t o r s t o p r o v i d e a p p r o p r i a te e m p l o y e e t r a i n i n g i n B M P s a n d sh a l l a l s o t r a i n t h e i r s t a f f a n d c o n t r a c t o r s . N1 3 H o u s e k e e p i n g o f L o a d i n g D o c k s Se e C A S D A B M P S D - 3 1 M a i n t e n a n c e B a y s a n d L o a d i n g D o ck s i n A t t a c h m e n t F . N1 4 C a t c h B a s i n I n s p e c t i o n P r o g r a m Dr a i n a g e f a c i l i t i e s ( i n l e t s a n d b a s i n s ) m u s t b e i n s pe c t e d a n n u a l l y , i n t h e l a t e su m m e r o r e a r l y f a l l , a n d c l e a n e d a s n e e d e d , o r i f ac c u m u l a t e d se d i m e n t / d e b r i s f i l l s 2 5 % o r m o r e o f t h e s e d i m e n t / d eb r i s s t o r a g e c a p a c i t y o f th e f a c i l i t y . T h e p r o p e r t y o w n e r s h a l l c o n t r a c t a ma i n t e n a n c e c o m p a n y t o ev a l u a t e a l l p o r t i o n s o f t h e d r a i n a g e f a c i l i t i e s a n nu a l l y t o d e t e r m i n e t h e ad e q u a c y o f t h e i n s p e c t i o n a n d m a i n t e n a n c e f r e q u e n c y, a n d r e p o r t t h e ev a l u a t i o n f i n d i n g s t o t h e C i t y o f F o n t a n a . S e e C A S QA B M P S C - 4 4 , D r a i n a g e Sy s t e m M a i n t e n a n c e i n A t t a c h m e n t F a n d t h e I n s p e c t i on a n d M a i n t e n a n c e Pr o g r a m t a b l e i n S e c t i o n 4 . 0 . N1 5 Va c u u m S w e e p i n g o f P r i v a t e S t r e e t s a n d Pa r k i n g L o t s Th e m a n a g e m e n t t e a m s h a l l b e r e s p o n s i b l e f o r c o n t r a ct i n g a c o m p a n y t o pr o v i d e s w e e p i n g t h e p r i v a t e s t r e e t a n d p a r k i n g l o t a t l e a s t t w i c e a n n u a l l y , pr i o r t o t h e s t o r m s e a s o n i n t h e l a t e s u m m e r o r e a r ly f a l l , t o r e d u c e t h e a m o u n t Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 5 of s e d i m e n t , g a r d e n w a s t e , an d t r a s h en t e r i n g t h e s t o r m d r a i n s y s t e m s . F o r ad d i t i o n a l i n f o r m a t i o n , s e e C A S Q A B M P S C - 3 4 , W a s t e Ha n d l i n g a n d D i s p o s a l , an d S C - 4 3 , P a r k i n g / S t o r a g e A r e a M a i n t e n a n c e , i n c l u d ed i n A t t a c h m e n t F a n d th e I n s p e c t i o n a n d M a i n t e n a n c e P r o g r a m t a b l e i n S e c ti o n 4 . 0 . N1 6 Ot h e r N o n - s t r u c t u r a l M e a s u r e s f o r P u b l i c Ag e n c y P r o j e c t s Th e r e a r e n o o t h e r n o n - s t r u c t u r a l m e a s u r e s . N1 7 Co m p l y w i t h a l l o t h e r a p p l i c a b l e N P D E S pe r m i t s Th e d e v e l o p e r ( o w n e r ) s h a l l c o m p l y w i t h a l l r e q u i r e me n t s o f t h e C a l i f o r n i a G e n e r a l Co n s t r u c t i o n S t o r m w a t e r P e r m i t d u r i n g t h e e n t i r e p e ri o d o f c o n s t r u c t i o n o f t h i s p r o j e c t . Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 6 Fo r m 4 . 1 - 2 S t r u c t u r a l S o u r c e C o n t r o l B M P s Id e n t i f i e r N a m e Ch e c k O n e De s c r i b e B M P I m p l e m e n t a t i o n O R , If n o t a p p l i c a b l e , s t a t e r e a s o n In c l u d e d No t Ap p l i c a b l e S1 Pr o v i d e s t o r m d r a i n s y s t e m s t e n c i l l i n g a n d s i g n a g e (C A S Q A N e w D e v e l o p m e n t B M P H a n d b o o k S D - 1 3 ) Si t e o w n e r s t o p r o v i d e s t o r m d r a i n s t e n c i l i n g a n d s ig n a g e p e r C A S Q A B M P S D - 1 3 S2 De s i g n a n d c o n s t r u c t o u t d o o r m a t e r i a l s t o r a g e ar e a s t o r e d u c e p o l l u t i o n i n t r o d u c t i o n ( C A S Q A Ne w D e v e l o p m e n t B M P H a n d b o o k S D - 3 4 ) No t a n t i c i p a t e d S3 De s i g n a n d c o n s t r u c t t r a s h a n d w a s t e s t o r a g e ar e a s t o r e d u c e p o l l u t i o n i n t r o d u c t i o n ( C A S Q A Ne w D e v e l o p m e n t B M P H a n d b o o k S D - 3 2 ) Tr a s h e n c l o s u r e s t o b e d e s i g n e d / c o n s t r u c t e d p e r C A S QA B M P S D - 3 2 w i t h a s o l i d ca n o p y - s t y l e r o o f . S4 Us e e f f i c i e n t i r r i g a t i o n s y s t e m s & l a n d s c a p e de s i g n , w a t e r c o n s e r v a t i o n , s m a r t c o n t r o l l e r s , a n d so u r c e c o n t r o l ( S t a t e w i d e M o d e l L a n d s c a p e Or d i n a n c e ; C A S Q A N e w D e v e l o p m e n t B M P Ha n d b o o k S D - 1 2 ) Ir r i g a t i o n p r a c t i c e s t o c o m p l y w i t h C A S Q A B M P S D - 1 2 S5 Fi n i s h g r a d e o f l a n d s c a p e d a r e a s a t a m i n i m u m o f 1- 2 i n c h e s b e l o w t o p o f c u r b , s i d e w a l k , o r pa v e m e n t La n d s c a p e d a r e a s t o b e d e s i g n e d a n d m a i n t a i n e d t o b e 1 - 2 i n c h e s b e l o w im p e r v i o u s s u r f a c e s S6 Pr o t e c t s l o p e s a n d c h a n n e l s a n d p r o v i d e e n e r g y di s s i p a t i o n ( C A S Q A N e w D e v e l o p m e n t B M P Ha n d b o o k S D - 1 0 ) No t a n t i c i p a t e d S7 Co v e r e d d o c k a r e a s ( C A S Q A N e w D e v e l o p m e n t BM P H a n d b o o k S D - 3 1 ) No t a n t i c i p a t e d S8 Co v e r e d m a i n t e n a n c e b a y s w i t h s p i l l c o n t a i n m e n t pl a n s ( C A S Q A N e w D e v e l o p m e n t B M P H a n d b o o k SD - 3 1 ) No t a n t i c i p a t e d S9 Ve h i c l e w a s h a r e a s w i t h s p i l l c o n t a i n m e n t p l a n s (C A S Q A N e w D e v e l o p m e n t B M P H a n d b o o k S D - 3 3 ) No t a n t i c i p a t e d S1 0 Co v e r e d o u t d o o r p r o c e s s i n g a r e a s ( C A S Q A N e w De v e l o p m e n t B M P H a n d b o o k S D - 3 6 ) No t a n t i c i p a t e d Wa t e r Q u a l i t y M a n a g e m e n t P l a n ( W Q M P ) 4 - 7 Fo r m 4 . 1 - 2 S t r u c t u r a l S o u r c e C o n t r o l B M P s Id e n t i f i e r N a m e Ch e c k O n e De s c r i b e B M P I m p l e m e n t a t i o n O R , If n o t a p p l i c a b l e , s t a t e r e a s o n In c l u d e d No t Ap p l i c a b l e S1 1 Eq u i p m e n t w a s h a r e a s w i t h s p i l l c o n t a i n m e n t pl a n s ( C A S Q A N e w D e v e l o p m e n t B M P H a n d b o o k SD - 3 3 ) No t a n t i c i p a t e d S1 2 Fu e l i n g a r e a s ( C A S Q A N e w D e v e l o p m e n t B M P Ha n d b o o k S D - 3 0 ) No t a n t i c i p a t e d S1 3 Hi l l s i d e l a n d s c a p i n g ( C A S Q A N e w D e v e l o p m e n t BM P H a n d b o o k S D - 1 0 ) No t a n t i c i p a t e d S1 4 W a s h w a t e r c o n t r o l f o r f o o d p r e p a r a t i o n a r e a s No t a n t i c i p a t e d S1 5 Co m m u n i t y c a r w a s h r a c k s ( C A S Q A N e w De v e l o p m e n t B M P H a n d b o o k S D - 3 3 ) No t a n t i c i p a t e d Water Quality Management Plan (WQMP) 4-8 4.1.2 Preventative LID Site Design Practices Site design practices associated with new LID requirements in the MS4 Permit should be considered in the earliest phases of a project. Preventative site design practices can result in smaller DCV for LID BMP and hydromodification control BMP by reducing runoff generation. Describe site design and drainage plan including: Refer to Section 5.2 of the TGD for WQMP for more details. Form 4.1-3 Preventative LID Site Design Practices Checklist Site Design Practices If yes, explain how preventative site design practice is addressed in project site plan. If no, other LID BMPs must be selected to meet targets Minimize impervious areas: Yes No Explanation: Site design implements use of minimum drive aisle width. Landscape areas are maximized to the largest extent practical. Maximize natural infiltration capacity: Yes No Explanation: On-site infiltration is proposed as means of addressing water quality and hydrologic impacts. Landscape islands will also allow for natural infiltration in certain areas. Preserve existing drainage patterns and time of concentration: Yes No Explanation: Drainage patterns is essentially the same as existing condition. Disconnect impervious areas: Yes No Explanation: Roof drains to discharge into landscape areas when possible before entering area drains. Protect existing vegetation and sensitive areas: Yes No Explanation: The site contains minimal vegetation. Re-vegetate disturbed areas: Yes No Explanation: Pervious areas to be landscaped Minimize unnecessary compaction in stormwater retention/infiltration basin/trench areas: Yes No Explanation: Compaction will be minimized in the infiltration basin/trench areas. Utilize vegetated drainage swales in place of underground piping or imperviously lined swales: Yes No Explanation: Site design use unlined drainage swales to area drains when possible. Stake off areas that will be used for landscaping to minimize compaction during construction: Yes No Explanation: Contractor to be informed to stake off landscaping areas and minimize machinery/equipment use over landscape areas during construction phase.  A narrative of site design practices utilized or rationale for not using practices  A narrative of how site plan incorporates preventive site design practices  Include an attached Site Plan layout which shows how preventative site design practices are included in WQMP Water Quality Management Plan (WQMP) 4-9 4.2 Project Performance Criteria The purpose of this section of the Project WQMP is to establish targets for post-development hydrology based on performance criteria specified in the MS4 Permit. These targets include runoff volume for water quality control (referred to as LID design capture volume), and runoff volume, time of concentration, and peak runoff for protection of any downstream waterbody segments with a HCOC. If the project has more than one outlet for stormwater runoff, then complete additional versions of these forms for each DA / outlet. Methods applied in the following forms include:  For LID BMP Design Capture Volume (DCV), the San Bernardino County Stormwater Program requires use of the P6 method (MS4 Permit Section XI.D.6a.ii) – Form 4.2-1  For HCOC pre- and post-development hydrologic calculation, the San Bernardino County Stormwater Program requires the use of the Rational Method (San Bernardino County Hydrology Manual Section D). Forms 4.2-2 through Form 4.2-5 calculate hydrologic variables including runoff volume, time of concentration, and peak runoff from the project site pre- and post-development using the Hydrology Manual Rational Method approach. For projects greater than 640 acres (1.0 mi2), the Rational Method and these forms should not be used. For such projects, the Unit Hydrograph Method (San Bernardino County Hydrology Manual Section E) shall be applied for hydrologic calculations for HCOC performance criteria. Refer to Section 4 in the TGD for WQMP for detailed guidance and instructions. Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume (DA 1) 1 Project area DA 1 (ft2): 450,846 2 Imperviousness after applying preventative site design practices (Imp%): 91.47 3 Runoff Coefficient (Rc): 0.752 Rc = 0.858(Imp%)^3-0.78(Imp%)^2+0.774(Imp%)+0.04 4 Determine 1-hour rainfall depth for a 2-year return period P2yr-1hr (in): 0.526 http://hdsc.nws.noaa.gov/hdsc/pfds/sa/sca_pfds.html 5 Compute P6, Mean 6-hr Precipitation (inches): 0.78 P6 = Item 4 *C1, where C1 is a function of site climatic region specified in Form 3-1 Item 1 (Valley = 1.4807; Mountain = 1.909; Desert = 1.2371) 6 Drawdown Rate Use 48 hours as the default condition. Selection and use of the 24 hour drawdown time condition is subject to approval by the local jurisdiction. The necessary BMP footprint is a function of drawdown time. While shorter drawdown times reduce the performance criteria for LID BMP design capture volume, the depth of water that can be stored is also reduced. 24-hrs 48-hrs 7 Compute design capture volume, DCV (ft3): 43,198 DCV = 1/12 * [Item 1* Item 3 *Item 5 * C2], where C2 is a function of drawdown rate (24-hr = 1.582; 48-hr = 1.963) Compute separate DCV for each outlet from the project site per schematic drawn in Form 3-1 Item 2 Water Quality Management Plan (WQMP) 4-10 Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume (DA 2) 1 Project area DA 2 (ft2): 238,708 2 Imperviousness after applying preventative site design practices (Imp%): 83.72 3 Runoff Coefficient (Rc): 0.645 Rc = 0.858(Imp%)^3-0.78(Imp%)^2+0.774(Imp%)+0.04 4 Determine 1-hour rainfall depth for a 2-year return period P2yr-1hr (in): 0.526 http://hdsc.nws.noaa.gov/hdsc/pfds/sa/sca_pfds.html 5 Compute P6, Mean 6-hr Precipitation (inches): 0.78 P6 = Item 4 *C1, where C1 is a function of site climatic region specified in Form 3-1 Item 1 (Valley = 1.4807; Mountain = 1.909; Desert = 1.2371) 6 Drawdown Rate Use 48 hours as the default condition. Selection and use of the 24 hour drawdown time condition is subject to approval by the local jurisdiction. The necessary BMP footprint is a function of drawdown time. While shorter drawdown times reduce the performance criteria for LID BMP design capture volume, the depth of water that can be stored is also reduced. 24-hrs 48-hrs 7 Compute design capture volume, DCV (ft3): 19,610 DCV = 1/12 * [Item 1* Item 3 *Item 5 * C2], where C2 is a function of drawdown rate (24-hr = 1.582; 48-hr = 1.963) Compute separate DCV for each outlet from the project site per schematic drawn in Form 3-1 Item 2 Form 4.2-2 Summary of HCOC Assessment (DA 1) Does project have the potential to cause or contribute to an HCOC in a downstream channel: Yes No Go to: http://permitrack.sbcounty.gov/wap/ If “Yes”, then complete HCOC assessment of site hydrology for 2yr storm event using Forms 4.2-3 through 4.2-5 and insert results below (Forms 4.2-3 through 4.2-5 may be replaced by computer software analysis based on the San Bernardino County Hydrology Manual) If “No,” then proceed to Section 4.3 Project Conformance Analysis Condition Runoff Volume (ft3) Time of Concentration (min) Peak Runoff (cfs) Pre-developed 1 Form 4.2-3 Item 12 2 Form 4.2-4 Item 13 3 Form 4.2-5 Item 10 Post-developed 4 Form 4.2-3 Item 13 5 Form 4.2-4 Item 14 6 Form 4.2-5 Item 14 Difference 7 Item 4 – Item 1 8 Item 2 – Item 5 9 Item 6 – Item 3 Difference (as % of pre-developed) 10 % Item 7 / Item 1 11 % Item 8 / Item 2 12 % Item 9 / Item 3 THE PROJECT SITE IS WITHIN HCOC EXEMPT AREAS PER CITY OF FONTANA WQMP HANDBOOK FIGURE 2-2 HCOC EXEMPT AREAS. SEE APPENDIX A FOR MORE INFORMATION. Water Quality Management Plan (WQMP) 4-11 Form 4.2-3 HCOC Assessment for Runoff Volume (DA 1 & 2) Weighted Curve Number Determination for: Pre-developed DA DMA A DMA B DMA C DMA D DMA E DMA F DMA G DMA H 1a Land Cover type 2a Hydrologic Soil Group (HSG) 3a DMA Area, ft2 sum of areas of DMA should equal area of DA 4a Curve Number (CN) use Items 1 and 2 to select the appropriate CN from Appendix C-2 of the TGD for WQMP Weighted Curve Number Determination for: Post-developed DA DMA A DMA B DMA C DMA D DMA E DMA F DMA G DMA H 1b Land Cover type 2b Hydrologic Soil Group (HSG) 3b DMA Area, ft2 sum of areas of DMA should equal area of DA 4b Curve Number (CN) use Items 5 and 6 to select the appropriate CN from Appendix C-2 of the TGD for WQMP 5 Pre-Developed area-weighted CN: 7 Pre-developed soil storage capacity, S (in): S = (1000 / Item 5) - 10 9 Initial abstraction, Ia (in): Ia = 0.2 * Item 7 6 Post-Developed area-weighted CN: 8 Post-developed soil storage capacity, S (in): S = (1000 / Item 6) - 10 10 Initial abstraction, Ia (in): Ia = 0.2 * Item 8 11 Precipitation for 2 yr, 24 hr storm (in): Go to: http://hdsc.nws.noaa.gov/hdsc/pfds/sa/sca_pfds.html 12 Pre-developed Volume (ft3): Vpre =(1 / 12) * (Item sum of Item 3) * [(Item 11 – Item 9)^2 / ((Item 11 – Item 9 + Item 7) 13 Post-developed Volume (ft3): Vpre =(1 / 12) * (Item sum of Item 3) * [(Item 11 – Item 10)^2 / ((Item 11 – Item 10 + Item 8) 14 Volume Reduction needed to meet HCOC Requirement, (ft3): VHCOC = (Item 13 * 0.95) – Item 12 Water Quality Management Plan (WQMP) 4-12 Form 4.2-4 HCOC Assessment for Time of Concentration (DA 1 & 2) Compute time of concentration for pre and post developed conditions for each DA (For projects using the Hydrology Manual complete the form below) Variables Pre-developed DA1 Use additional forms if there are more than 4 DMA Post-developed DA1 Use additional forms if there are more than 4 DMA DMA A DMA B DMA C DMA D DMA A DMA B DMA C DMA D 1 Length of flowpath (ft) Use Form 3-2 Item 5 for pre-developed condition 2 Change in elevation (ft) 3 Slope (ft/ft), So = Item 2 / Item 1 4 Land cover 5 Initial DMA Time of Concentration (min) Appendix C-1 of the TGD for WQMP 6 Length of conveyance from DMA outlet to project site outlet (ft) May be zero if DMA outlet is at project site outlet 7 Cross-sectional area of channel (ft2) 8 Wetted perimeter of channel (ft) 9 Manning’s roughness of channel (n) 10 Channel flow velocity (ft/sec) Vfps = (1.49 / Item 9) * (Item 7/Item 8)^0.67 * (Item 3)^0.5 11 Travel time to outlet (min) Tt = Item 6 / (Item 10 * 60) 12 Total time of concentration (min) Tc = Item 5 + Item 11 13 Pre-developed time of concentration (min): Minimum of Item 12 pre-developed DMA 14 Post-developed time of concentration (min): Minimum of Item 12 post-developed DMA 15 Additional time of concentration needed to meet HCOC requirement (min): TC-HCOC = (Item 13 * 0.95) – Item 14 Water Quality Management Plan (WQMP) 4-13 Form 4.2-5 HCOC Assessment for Peak Runoff (DA 1 & 2) Compute peak runoff for pre- and post-developed conditions Variables Pre-developed DA to Project Outlet (Use additional forms if more than 3 DMA) Post-developed DA to Project Outlet (Use additional forms if more than 3 DMA) DMA A DMA B DMA C DMA A DMA B DMA C 1 Rainfall Intensity for storm duration equal to time of concentration Ipeak = 10^(LOG Form 4.2-1 Item 4 - 0.6 LOG Form 4.2-4 Item 5 /60) 2 Drainage Area of each DMA (Acres) For DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 3 Ratio of pervious area to total area For DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 4 Pervious area infiltration rate (in/hr) Use pervious area CN and antecedent moisture condition with Appendix C-3 of the TGD for WQMP 5 Maximum loss rate (in/hr) Fm = Item 3 * Item 4 Use area-weighted Fm from DMA with outlet at project site outlet, include upstream DMA (Using example schematic in Form 3-1, DMA A will include drainage from DMA C) 6 Peak Flow from DMA (cfs) Qp =Item 2 * 0.9 * (Item 1 - Item 5) 7 Time of concentration adjustment factor for other DMA to site discharge point Form 4.2-4 Item 12 DMA / Other DMA upstream of site discharge point (If ratio is greater than 1.0, then use maximum value of 1.0) DMA A n/a n/a DMA B n/a n/a DMA C n/a n/a 8 Pre-developed Qp at Tc for DMA A: Qp = Item 6DMAA + [Item 6DMAB * (Item 1DMAA - Item 5DMAB)/(Item 1DMAB - Item 5DMAB)* Item 7DMAA/2] + [Item 6DMAC * (Item 1DMAA - Item 5DMAC)/(Item 1DMAC - Item 5DMAC)* Item 7DMAA/3] 9 Pre-developed Qp at Tc for DMA B: Qp = Item 6DMAB + [Item 6DMAA * (Item 1DMAB - Item 5DMAA)/(Item 1DMAA - Item 5DMAA)* Item 7DMAB/1] + [Item 6DMAC * (Item 1DMAB - Item 5DMAC)/(Item 1DMAC - Item 5DMAC)* Item 7DMAB/3] 10 Pre-developed Qp at Tc for DMA C: Qp = Item 6DMAC + [Item 6DMAA * (Item 1DMAC - Item 5DMAA)/(Item 1DMAA - Item 5DMAA)* Item 7DMAC/1] + [Item 6DMAB * (Item 1DMAC - Item 5DMAB)/(Item 1DMAB - Item 5DMAB)* Item 7DMAC/2] 10 Peak runoff from pre-developed condition confluence analysis (cfs): Maximum of Item 8, 9, and 10 (including additional forms as needed) 11 Post-developed Qp at Tc for DMA A: Same as Item 8 for post-developed values 12 Post-developed Qp at Tc for DMA B: Same as Item 9 for post-developed values 13 Post-developed Qp at Tc for DMA C: Same as Item 10 for post-developed values 14 Peak runoff from post-developed condition confluence analysis (cfs): Maximum of Item 11, 12, and 13 (including additional forms as needed) 15 Peak runoff reduction needed to meet HCOC Requirement (cfs): Qp-HCOC = (Item 14 * 0.95) – Item 10 Water Quality Management Plan (WQMP) 4-14 4.3 Project Conformance Analysis Complete the following forms for each project site DA to document that the proposed LID BMPs conform to the project DCV developed to meet performance criteria specified in the MS4 Permit (WQMP Template Section 4.2). For the LID DCV, the forms are ordered according to hierarchy of BMP selection as required by the MS4 Permit (see Section 5.3.1 in the TGD for WQMP). The forms compute the following for on-site LID BMP:  Site Design and Hydrologic Source Controls (Form 4.3-2)  Retention and Infiltration (Form 4.3-3)  Harvested and Use (Form 4.3-4) or  Biotreatment (Form 4.3-5). At the end of each form, additional fields facilitate the determination of the extent of mitigation provided by the specific BMP category, allowing for use of the next category of BMP in the hierarchy, if necessary. The first step in the analysis, using Section 5.3.2.1 of the TGD for WQMP, is to complete Forms 4.3-1 and 4.3-3) to determine if retention and infiltration BMPs are infeasible for the project. For each feasibility criterion in Form 4.3-1, if the answer is “Yes,” provide all study findings that includes relevant calculations, maps, data sources, etc. used to make the determination of infeasibility. Next, complete Forms 4.3-2 and 4.3-4 to determine the feasibility of applicable HSC and harvest and use BMPs, and, if their implementation is feasible, the extent of mitigation of the DCV. If no site constraints exist that would limit the type of BMP to be implemented in a DA, evaluate the use of combinations of LID BMPs, including all applicable HSC BMPs to maximize on-site retention of the DCV. If no combination of BMP can mitigate the entire DCV, implement the single BMP type, or combination of BMP types, that maximizes on-site retention of the DCV within the minimum effective area. If the combination of LID HSC, retention and infiltration, and harvest and use BMPs are unable to mitigate the entire DCV, then biotreatment BMPs may be implemented by the project proponent. If biotreatment BMPs are used, then they must be sized to provide sufficient capacity for effective treatment of the remainder of the volume-based performance criteria that cannot be achieved with LID BMPs (TGD for WQMP Section 5.4.4.2). Under no circumstances shall any portion of the DCV be released from the site without effective mitigation and/or treatment. Water Quality Management Plan (WQMP) 4-15 Form 4.3-1 Infiltration BMP Feasibility (DA 1 & 2) Feasibility Criterion – Complete evaluation for each DA on the Project Site 1 Would infiltration BMP pose significant risk for groundwater related concerns? Yes No Refer to Section 5.3.2.1 of the TGD for WQMP If Yes, Provide basis: (attach) 2 Would installation of infiltration BMP significantly increase the risk of geotechnical hazards? Yes No (Yes, if the answer to any of the following questions is yes, as established by a geotechnical expert): · The location is less than 50 feet away from slopes steeper than 15 percent · The location is less than eight feet from building foundations or an alternative setback. · A study certified by a geotechnical professional or an available watershed study determines that stormwater infiltration would result in significantly increased risks of geotechnical hazards. If Yes, Provide basis: (attach) 3 Would infiltration of runoff on a Project site violate downstream water rights? Yes No If Yes, Provide basis: (attach) 4 Is proposed infiltration facility located on hydrologic soil group (HSG) D soils or does the site geotechnical investigation indicate presence of soil characteristics, which support categorization as D soils? Yes No If Yes, Provide basis: (attach) 5 Is the design infiltration rate, after accounting for safety factor of 2.0, below proposed facility less than 0.3 in/hr (accounting for soil amendments)? Yes No If Yes, Provide basis: (attach) 6 Would on-site infiltration or reduction of runoff over pre-developed conditions be partially or fully inconsistent with watershed management strategies as defined in the WAP, or impair beneficial uses? Yes No See Section 3.5 of the TGD for WQMP and WAP If Yes, Provide basis: (attach) 7 Any answer from Item 1 through Item 3 is “Yes”: Yes No If yes, infiltration of any volume is not feasible onsite. Proceed to Form 4.3-4, Harvest and Use BMP. If no, then proceed to Item 8 below. 8 Any answer from Item 4 through Item 6 is “Yes”: Yes No If yes, infiltration is permissible but is not required to be considered. Proceed to Form 4.3-2, Hydrologic Source Control BMP. If no, then proceed to Item 9, below. 9 All answers to Item 1 through Item 6 are “No”: Infiltration of the full DCV is potentially feasible, LID infiltration BMP must be designed to infiltrate the full DCV to the MEP. Proceed to Form 4.3-2, Hydrologic Source Control BMP. Water Quality Management Plan (WQMP) 4-16 4.3.1 Site Design Hydrologic Source Control BMP Section XI.E. of the Permit emphasizes the use of LID preventative measures; and the use of LID HSC BMPs reduces the portion of the DCV that must be addressed in downstream BMPs. Therefore, all applicable HSC shall be provided except where they are mutually exclusive with each other, or with other BMPs. Mutual exclusivity may result from overlapping BMP footprints such that either would be potentially feasible by itself, but both could not be implemented. Please note that while there are no numeric standards regarding the use of HSC, if a project cannot feasibly meet BMP sizing requirements or cannot fully address HCOCs, feasibility of all applicable HSC must be part of demonstrating that the BMP system has been designed to retain the maximum feasible portion of the DCV. Complete Form 4.3-2 to identify and calculate estimated retention volume from implementing site design HSC BMP. Refer to Section 5.4.1 in the TGD for more detailed guidance. Form 4.3-2 Site Design Hydrologic Source Control BMPs (DA 1 & 2) 1 Implementation of Impervious Area Dispersion BMP (i.e. routing runoff from impervious to pervious areas), excluding impervious areas planned for routing to on-lot infiltration BMP: Yes No If yes, complete Items 2-5; If no, proceed to Item 6 DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 2 Total impervious area draining to pervious area (ft2) 3 Ratio of pervious area receiving runoff to impervious area 4 Retention volume achieved from impervious area dispersion (ft3) V = Item2 * Item 3 * (0.5/12), assuming retention of 0.5 inches of runoff 5 Sum of retention volume achieved from impervious area dispersion (ft3): Vretention =Sum of Item 4 for all BMPs 6 Implementation of Localized On-lot Infiltration BMPs (e.g. on-lot rain gardens): Yes No If yes, complete Items 7- 13 for aggregate of all on-lot infiltration BMP in each DA; If no, proceed to Item 14 DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 7 Ponding surface area (ft2) 8 Ponding depth (ft) 9 Surface area of amended soil/gravel (ft2) 10 Average depth of amended soil/gravel (ft) 11 Average porosity of amended soil/gravel 12 Retention volume achieved from on-lot infiltration (ft3) Vretention = (Item 7 *Item 8) + (Item 9 * Item 10 * Item 11) 13 Runoff volume retention from on-lot infiltration (ft3): Vretention =Sum of Item 12 for all BMPs Water Quality Management Plan (WQMP) 4-17 Form 4.3-2 Site Design Hydrologic Source Control BMPs (DA 1 & 2) 14 Implementation of evapotranspiration BMP (green, brown, or blue roofs): Yes No If yes, complete Items 15-20. If no, proceed to Item 21 DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 15 Rooftop area planned for ET BMP (ft2) 16 Average wet season ET demand (in/day) Use local values, typical ~ 0.1 17 Daily ET demand (ft3/day) Item 15 * (Item 16 / 12) 18 Drawdown time (hrs) Copy Item 6 in Form 4.2-1 19 Retention Volume (ft3) Vretention = Item 17 * (Item 18 / 24) 20 Runoff volume retention from evapotranspiration BMPs (ft3): Vretention =Sum of Item 19 for all BMPs 21 Implementation of Street Trees: Yes No If yes, complete Items 22-25. If no, proceed to Item 26 DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 22 Number of Street Trees 23 Average canopy cover over impervious area (ft2) 24 Runoff volume retention from street trees (ft3) Vretention = Item 22 * Item 23 * (0.05/12) assume runoff retention of 0.05 inches 25 Runoff volume retention from street tree BMPs (ft3): Vretention = Sum of Item 24 for all BMPs 26 Implementation of residential rain barrel/cisterns: Yes No If yes, complete Items 27-29; If no, proceed to Item 30 DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 27 Number of rain barrels/cisterns 28 Runoff volume retention from rain barrels/cisterns (ft3) Vretention = Item 27 * 3 29 Runoff volume retention from residential rain barrels/Cisterns (ft3): Vretention =Sum of Item 28 for all BMPs 30 Total Retention Volume from Site Design Hydrologic Source Control BMPs: Sum of Items 5, 13, 20, 25 and 29 Water Quality Management Plan (WQMP) 4-18 4.3.2 Infiltration BMPs Use Form 4.3-3 to compute on-site retention of runoff from proposed retention and infiltration BMPs. Volume retention estimates are sensitive to the percolation rate used, which determines the amount of runoff that can be infiltrated within the specified drawdown time. The infiltration safety factor reduces field measured percolation to account for potential inaccuracy associated with field measurements, declining BMP performance over time, and compaction during construction. Appendix D of the TGD for WQMP provides guidance on estimating an appropriate safety factor to use in Form 4.3-3. If site constraints limit the use of BMPs to a single type and implementation of retention and infiltration BMPs mitigate no more than 40% of the DCV, then they are considered infeasible and the Project Proponent may evaluate the effectiveness of BMPs lower in the LID hierarchy of use (Section 5.5.1 of the TGD for WQMP) If implementation of infiltrations BMPs is feasible as determined using Form 4.3-1, then LID infiltration BMPs shall be implemented to the MEP (section 4.1 of the TGD for WQMP). Water Quality Management Plan (WQMP) 4-19 Form 4.3-3 Infiltration LID BMP - including underground BMPs (DA 1) 1 Remaining LID DCV not met by site design HSC BMP (ft3): 43,198 Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 BMP Type Use columns to the right to compute runoff volume retention from proposed infiltration BMP (select BMP from Table 5-4 in TGD for WQMP) - Use additional forms for more BMPs DA 1 DMA 1 BMP Type Infiltration Basin DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 2 Infiltration rate of underlying soils (in/hr) See Section 5.4.2 and Appendix D of the TGD for WQMP for minimum requirements for assessment methods 10.97 3 Infiltration safety factor See TGD Section 5.4.2 and Appendix D 3 4 Design percolation rate (in/hr) Pdesign = Item 2 / Item 3 3.66 5 Ponded water drawdown time (hr) Copy Item 6 in Form 4.2-1 48 6 Maximum ponding depth (ft) BMP specific, see Table 5-4 of the TGD for WQMP for BMP design details N/A 7 Ponding Depth (ft) dBMP = Minimum of (1/12*Item 4*Item 5) or Item 6 N/A 8 Infiltrating surface area, SABMP (ft2) the lesser of the area needed for infiltration of full DCV or minimum space requirements from Table 5.7 of the TGD for WQMP N/A 9 Amended soil depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 in the TGD for WQMP for reference to BMP design details N/A 10 Amended soil porosity N/A 11 Gravel depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 of the TGD for WQMP for BMP design details N/A 12 Gravel porosity N/A 13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs 3 14 Above Ground Retention Volume (ft3) Vretention = Item 8 * [Item7 + (Item 9 * Item 10) + (Item 11 * Item 12) + (Item 13 * (Item 4 / 12))] N/A 15 Underground Retention Volume (ft3) Volume determined using manufacturer’s specifications and calculations 47,423 16 Total Retention Volume from LID Infiltration BMPs: 47,423 (Sum of Items 14 and 15 for all infiltration BMP included in plan) 17 Fraction of DCV achieved with infiltration BMP: 109.8% Retention% = Item 16 / Form 4.2-1 Item 7 18 Is full LID DCV retained onsite with combination of hydrologic source control and LID retention/infiltration BMPs? Yes No If yes, demonstrate conformance using Form 4.3-10; If no, then reduce Item 3, Factor of Safety to 2.0 and increase Item 8, Infiltrating Surface Area, such that the portion of the site area used for retention and infiltration BMPs equals or exceeds the minimum effective area thresholds (Table 5-7 of the TGD for WQMP) for the applicable category of development and repeat all above calculations. Water Quality Management Plan (WQMP) 4-20 Form 4.3-3 Infiltration LID BMP - including underground BMPs (DA 2) 1 Remaining LID DCV not met by site design HSC BMP (ft3): 19,610 Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 BMP Type Use columns to the right to compute runoff volume retention from proposed infiltration BMP (select BMP from Table 5-4 in TGD for WQMP) - Use additional forms for more BMPs DA 2 DMA 2 BMP Type Infiltration Basin DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 2 Infiltration rate of underlying soils (in/hr) See Section 5.4.2 and Appendix D of the TGD for WQMP for minimum requirements for assessment methods 10.97 3 Infiltration safety factor See TGD Section 5.4.2 and Appendix D 3 4 Design percolation rate (in/hr) Pdesign = Item 2 / Item 3 3.66 5 Ponded water drawdown time (hr) Copy Item 6 in Form 4.2-1 48 6 Maximum ponding depth (ft) BMP specific, see Table 5-4 of the TGD for WQMP for BMP design details N/A 7 Ponding Depth (ft) dBMP = Minimum of (1/12*Item 4*Item 5) or Item 6 N/A 8 Infiltrating surface area, SABMP (ft2) the lesser of the area needed for infiltration of full DCV or minimum space requirements from Table 5.7 of the TGD for WQMP N/A 9 Amended soil depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 in the TGD for WQMP for reference to BMP design details N/A 10 Amended soil porosity N/A 11 Gravel depth, dmedia (ft) Only included in certain BMP types, see Table 5-4 of the TGD for WQMP for BMP design details N/A 12 Gravel porosity N/A 13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs N/A 14 Above Ground Retention Volume (ft3) Vretention = Item 8 * [Item7 + (Item 9 * Item 10) + (Item 11 * Item 12) + (Item 13 * (Item 4 / 12))] N/A 15 Underground Retention Volume (ft3) Volume determined using manufacturer’s specifications and calculations 20,959 16 Total Retention Volume from LID Infiltration BMPs: 20,959 (Sum of Items 14 and 15 for all infiltration BMP included in plan) 17 Fraction of DCV achieved with infiltration BMP: 106.9% Retention% = Item 16 / Form 4.2-1 Item 7 18 Is full LID DCV retained onsite with combination of hydrologic source control and LID retention/infiltration BMPs? Yes No If yes, demonstrate conformance using Form 4.3-10; If no, then reduce Item 3, Factor of Safety to 2.0 and increase Item 8, Infiltrating Surface Area, such that the portion of the site area used for retention and infiltration BMPs equals or exceeds the minimum effective area thresholds (Table 5-7 of the TGD for WQMP) for the applicable category of development and repeat all above calculations. Water Quality Management Plan (WQMP) 4-21 4.3.3 Harvest and Use BMP Harvest and use BMP may be considered if the full LID DCV cannot be met by maximizing infiltration BMPs. Use Form 4.3-4 to compute on-site retention of runoff from proposed harvest and use BMPs. Volume retention estimates for harvest and use BMPs are sensitive to the on-site demand for captured stormwater. Since irrigation water demand is low in the wet season, when most rainfall events occur in San Bernardino County, the volume of water that can be used within a specified drawdown period is relatively low. The bottom portion of Form 4.3-4 facilitates the necessary computations to show infeasibility if a minimum incremental benefit of 40 percent of the LID DCV would not be achievable with MEP implementation of on-site harvest and use of stormwater (Section 5.5.4 of the TGD for WQMP). Form 4.3-4 Harvest and Use BMPs (DA 1 & 2) 1 Remaining LID DCV not met by site design HSC or infiltration BMP (ft3): N/A Vunmet = Form 4.2-1 Item 7 - Form 4.3-2 Item 30 – Form 4.3-3 Item 16 BMP Type(s) Compute runoff volume retention from proposed harvest and use BMP (Select BMPs from Table 5-4 of the TGD for WQMP) - Use additional forms for more BMPs DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 2 Describe cistern or runoff detention facility 3 Storage volume for proposed detention type (ft3) Volume of cistern 4 Landscaped area planned for use of harvested stormwater (ft2) 5 Average wet season daily irrigation demand (in/day) Use local values, typical ~ 0.1 in/day 6 Daily water demand (ft3/day) Item 4 * (Item 5 / 12) 7 Drawdown time (hrs) Copy Item 6 from Form 4.2-1 8Retention Volume (ft3) Vretention = Minimum of (Item 3) or (Item 6 * (Item 7 / 24)) 9 Total Retention Volume (ft3) from Harvest and Use BMP Sum of Item 8 for all harvest and use BMP included in plan 10 Is the full DCV retained with a combination of LID HSC, retention and infiltration, and harvest & use BMPs? Yes No If yes, demonstrate conformance using Form 4.3-10. If no, then re-evaluate combinations of all LID BMP and optimize their implementation such that the maximum portion of the DCV is retained on-site (using a single BMP type or combination of BMP types). If the full DCV cannot be mitigated after this optimization process, proceed to Section 4.3.4. Water Quality Management Plan (WQMP) 4-22 4.3.4 Biotreatment BMP Biotreatment BMPs may be considered if the full LID DCV cannot be met by maximizing retention and infiltration, and harvest and use BMPs. A key consideration when using biotreatment BMP is the effectiveness of the proposed BMP in addressing the pollutants of concern for the project (see Table 5-5 of the TGD for WQMP). Use Form 4.3-5 to summarize the potential for volume based and/or flow based biotreatment options to biotreat the remaining unmet LID DCV w. Biotreatment computations are included as follows: · Use Form 4.3-6 to compute biotreatment in small volume based biotreatment BMP (e.g. bioretention w/underdrains); · Use Form 4.3-7 to compute biotreatment in large volume based biotreatment BMP (e.g. constructed wetlands); · Use Form 4.3-8 to compute sizing criteria for flow-based biotreatment BMP (e.g. bioswales) Form 4.3-5 Selection and Evaluation of Biotreatment BMP (DA 1 & 2) 1 Remaining LID DCV not met by site design HSC, infiltration, or harvest and use BMP for potential biotreatment (ft3): N/A Form 4.2-1 Item 7 - Form 4.3-2 Item 30 – Form 4.3-3 Item 16- Form 4.3-4 Item 9 List pollutants of concern Copy from Form 2.3-1. 2 Biotreatment BMP Selected (Select biotreatment BMP(s) necessary to ensure all pollutants of concern are addressed through Unit Operations and Processes, described in Table 5-5 of the TGD for WQMP) Volume-based biotreatment Use Forms 4.3-6 and 4.3-7 to compute treated volume Flow-based biotreatment Use Form 4.3-8 to compute treated volume Bioretention with underdrain Planter box with underdrain Constructed wetlands Wet extended detention Dry extended detention Vegetated swale Vegetated filter strip Proprietary biotreatment 3 Volume biotreated in volume based biotreatment BMP (ft3): Form 4.3- 6 Item 15 + Form 4.3-7 Item 13 4 Compute remaining LID DCV with implementation of volume based biotreatment BMP (ft3): Item 1 – Item 3 5 Remaining fraction of LID DCV for sizing flow based biotreatment BMP: % Item 4 / Item 1 6 Flow-based biotreatment BMP capacity provided (cfs): Use Figure 5-2 of the TGD for WQMP to determine flow capacity required to provide biotreatment of remaining percentage of unmet LID DCV (Item 5), for the project’s precipitation zone (Form 3-1 Item 1) 7 Metrics for MEP determination: · Provided a WQMP with the portion of site area used for suite of LID BMP equal to minimum thresholds in Table 5-7 of the TGD for WQMP for the proposed category of development: If maximized on-site retention BMPs is feasible for partial capture, then LID BMP implementation must be optimized to retain and infiltrate the maximum portion of the DCV possible within the prescribed minimum effective area. The remaining portion of the DCV shall then be mitigated using biotreatment BMP. Water Quality Management Plan (WQMP) 4-23 Form 4.3-6 Volume Based Biotreatment (DA 1 & 2) – Bioretention and Planter Boxes with Underdrains Biotreatment BMP Type (Bioretention w/underdrain, planter box w/underdrain, other comparable BMP) DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 1 Pollutants addressed with BMP List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in Table 5-5 of the TGD for WQMP 2 Amended soil infiltration rate Typical ~ 5.0 3 Amended soil infiltration safety factor Typical ~ 2.0 4 Amended soil design percolation rate (in/hr) Pdesign = Item 2 / Item 3 5 Ponded water drawdown time (hr) Copy Item 6 from Form 4.2-1 6 Maximum ponding depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details 7 Ponding Depth (ft) dBMP = Minimum of (1/12 * Item 4 * Item 5) or Item 6 8 Amended soil surface area (ft2) 9 Amended soil depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details 10 Amended soil porosity, n 11 Gravel depth (ft) see Table 5-6 of the TGD for WQMP for reference to BMP design details 12 Gravel porosity, n 13 Duration of storm as basin is filling (hrs) Typical ~ 3hrs 14 Biotreated Volume (ft3) Vbiotreated = Item 8 * [(Item 7/2) + (Item 9 * Item 10) +(Item 11 * Item 12) + (Item 13 * (Item 4 / 12))] 15 Total biotreated volume from bioretention and/or planter box with underdrains BMP: Sum of Item 14 for all volume-based BMPs included in this form Water Quality Management Plan (WQMP) 4-24 Form 4.3-7 Volume Based Biotreatment (DA 1 & 2) – Constructed Wetlands and Extended Detention Biotreatment BMP Type Constructed wetlands, extended wet detention, extended dry detention, or other comparable proprietary BMP. If BMP includes multiple modules (e.g. forebay and main basin), provide separate estimates for storage and pollutants treated in each module. DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) Forebay Basin Forebay Basin 1 Pollutants addressed with BMP forebay and basin List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in Table 5-5 of the TGD for WQMP 2 Bottom width (ft) 3 Bottom length (ft) 4 Bottom area (ft2) Abottom = Item 2 * Item 3 5 Side slope (ft/ft) 6 Depth of storage (ft) 7 Water surface area (ft2) Asurface =(Item 2 + (2 * Item 5 * Item 6)) * (Item 3 + (2 * Item 5 * Item 6)) 8 Storage volume (ft3) For BMP with a forebay, ensure fraction of total storage is within ranges specified in BMP specific fact sheets, see Table 5-6 of the TGD for WQMP for reference to BMP design details V =Item 6 / 3 * [Item 4 + Item 7 + (Item 4 * Item 7)^0.5] 9 Drawdown Time (hrs) Copy Item 6 from Form 2.1 10 Outflow rate (cfs) QBMP = (Item 8forebay + Item 8basin) / (Item 9 * 3600) 11 Duration of design storm event (hrs) 12 Biotreated Volume (ft3) Vbiotreated = (Item 8forebay + Item 8basin) +( Item 10 * Item 11 * 3600) 13 Total biotreated volume from constructed wetlands, extended dry detention, or extended wet detention : (Sum of Item 12 for all BMP included in plan) Water Quality Management Plan (WQMP) 4-25 Form 4.3-8 Flow Based Biotreatment (DA 1 & 2) Biotreatment BMP Type Vegetated swale, vegetated filter strip, or other comparable proprietary BMP DA DMA BMP Type DA DMA BMP Type DA DMA BMP Type (Use additional forms for more BMPs) 1 Pollutants addressed with BMP List all pollutant of concern that will be effectively reduced through specific Unit Operations and Processes described in TGD Table 5-5 2 Flow depth for water quality treatment (ft) BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details 3 Bed slope (ft/ft) BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details 4 Manning's roughness coefficient 5 Bottom width (ft) bw = (Form 4.3-5 Item 6 * Item 4) / (1.49 * Item 2^1.67 * Item 3^0.5) 6 Side Slope (ft/ft) BMP specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details 7 Cross sectional area (ft2) A = (Item 5 * Item 2) + (Item 6 * Item 2^2) 8 Water quality flow velocity (ft/sec) V = Form 4.3-5 Item 6 / Item 7 9 Hydraulic residence time (min) Pollutant specific, see Table 5-6 of the TGD for WQMP for reference to BMP design details 10 Length of flow based BMP (ft) L = Item 8 * Item 9 * 60 11 Water surface area at water quality flow depth (ft2) SAtop = (Item 5 + (2 * Item 2 * Item 6)) * Item 10 Water Quality Management Plan (WQMP) 4-26 4.3.5 Conformance Summary Complete Form 4.3-9 to demonstrate how on-site LID DCV is met with proposed site design hydrologic source control, infiltration, harvest and use, and/or biotreatment BMP. The bottom line of the form is used to describe the basis for infeasibility determination for on-site LID BMP to achieve full LID DCV, and provides methods for computing remaining volume to be addressed in an alternative compliance plan. If the project has more than one outlet, then complete additional versions of this form for each outlet. Form 4.3-9 Conformance Summary and Alternative Compliance Volume Estimate (DA 1 & DA 2) 1 Total LID DCV for the Project DA-1 & DA-2 (ft3): 62,807 Copy Item 7 in Form 4.2-1 2 On-site retention with site design hydrologic source control LID BMP (ft3): N/A Copy Item 30 in Form 4.3-2 3 On-site retention with LID infiltration BMP (ft3): 68,382 Copy Item 16 in Form 4.3-3 4 On-site retention with LID harvest and use BMP (ft3): N/A Copy Item 9 in Form 4.3-4 5 On-site biotreatment with volume based biotreatment BMP (ft3): N/A Copy Item 3 in Form 4.3-5 6 Flow capacity provided by flow based biotreatment BMP (cfs): N/A Copy Item 6 in Form 4.3-5 7 LID BMP performance criteria are achieved if answer to any of the following is “Yes”: · Full retention of LID DCV with site design HSC, infiltration, or harvest and use BMP: Yes No If yes, sum of Items 2, 3, and 4 is greater than Item 1 · Combination of on-site retention BMPs for a portion of the LID DCV and volume-based biotreatment BMP that address all pollutants of concern for the remaining LID DCV: Yes No If yes, a) sum of Items 2, 3, 4, and 5 is greater than Item 1, and Items 2, 3 and 4 are maximized; or b) Item 6 is greater than Form 4.3--5 Item 6 and Items 2, 3 and 4 are maximized  On-site retention and infiltration is determined to be infeasible and biotreatment BMP provide biotreatment for all pollutants of concern for full LID DCV: Yes No If yes, Form 4.3-1 Items 7 and 8 were both checked yes 8 If the LID DCV is not achieved by any of these means, then the project may be allowed to develop an alternative compliance plan. Check box that describes the scenario which caused the need for alternative compliance: · Combination of HSC, retention and infiltration, harvest and use, and biotreatment BMPs provide less than full LID DCV capture: Checked yes for Form 4.3-5 Item 7, Item 6 is zero, and sum of Items 2, 3, 4, and 5 is less than Item 1. If so, apply water quality credits and calculate volume for alternative compliance, Valt = (Item 1 – Item 2 – Item 3 – Item 4 – Item 5) * (100 - Form 2.4-1 Item 2)% · An approved Watershed Action Plan (WAP) demonstrates that water quality and hydrologic impacts of urbanization are more effective when managed in at an off-site facility: Attach appropriate WAP section, including technical documentation, showing effectiveness comparisons for the project site and regional watershed Water Quality Management Plan (WQMP) 4-27 4.3.6 Hydromodification Control BMP Use Form 4.3-10 to compute the remaining runoff volume retention, after LID BMP are implemented, needed to address HCOC, and the increase in time of concentration and decrease in peak runoff necessary to meet targets for protection of waterbodies with a potential HCOC. Describe hydromodification control BMP that address HCOC, which may include off-site BMP and/or in-stream controls. Section 5.6 of the TGD for WQMP provides additional details on selection and evaluation of hydromodification control BMP. Form 4.3-10 Hydromodification Control BMPs (DA 1 & DA 2) 1 Volume reduction needed for HCOC performance criteria (ft3): N/A (Form 4.2-2 Item 4 * 0.95) – Form 4.2-2 Item 1 2 On-site retention with site design hydrologic source control, infiltration, and harvest and use LID BMP (ft3): N/A Sum of Form 4.3-9 Items 2, 3, and 4 Evaluate option to increase implementation of on-site retention in Forms 4.3-2, 4.3-3, and 4.3-4 in excess of LID DCV toward achieving HCOC volume reduction 3 Remaining volume for HCOC volume capture (ft3): N/A Item 1 – Item 2 4 Volume capture provided by incorporating additional on-site or off-site retention BMPs (ft3): N/A Existing downstream BMP may be used to demonstrate additional volume capture (if so, attach to this WQMP a hydrologic analysis showing how the additional volume would be retained during a 2-yr storm event for the regional watershed) 5 If Item 4 is less than Item 3, incorporate in-stream controls on downstream waterbody segment to prevent impacts due to hydromodification Attach in-stream control BMP selection and evaluation to this WQMP 6 Is Form 4.2-2 Item 11 less than or equal to 5%: Yes No If yes, HCOC performance criteria is achieved. If no, select one or more mitigation options below: · Demonstrate increase in time of concentration achieved by proposed LID site design, LID BMP, and additional on-site or off-site retention BMP BMP upstream of a waterbody segment with a potential HCOC may be used to demonstrate increased time of concentration through hydrograph attenuation (if so, show that the hydraulic residence time provided in BMP for a 2-year storm event is equal or greater than the addition time of concentration requirement in Form 4.2-4 Item 15) · Increase time of concentration by preserving pre-developed flow path and/or increase travel time by reducing slope and increasing cross-sectional area and roughness for proposed on-site conveyance facilities · Incorporate appropriate in-stream controls for downstream waterbody segment to prevent impacts due to hydromodification, in a plan approved and signed by a licensed engineer in the State of California 7 Form 4.2-2 Item 12 less than or equal to 5%: Yes No If yes, HCOC performance criteria is achieved. If no, select one or more mitigation options below: · Demonstrate reduction in peak runoff achieved by proposed LID site design, LID BMPs, and additional on-site or off- site retention BMPs BMPs upstream of a waterbody segment with a potential HCOC may be used to demonstrate additional peak runoff reduction through hydrograph attenuation (if so, attach to this WQMP, a hydrograph analysis showing how the peak runoff would be reduced during a 2-yr storm event) · Incorporate appropriate in-stream controls for downstream waterbody segment to prevent impacts due to hydromodification, in a plan approved and signed by a licensed engineer in the State of California Water Quality Management Plan (WQMP) 4-28 4.4 Alternative Compliance Plan (if applicable) Describe an alternative compliance plan (if applicable) for projects not fully able to infiltrate, harvest and use, or biotreat the DCV via on-site LID practices. A project proponent must develop an alternative compliance plan to address the remainder of the LID DCV. Depending on project type some projects may qualify for water quality credits that can be applied to reduce the DCV that must be treated prior to development of an alternative compliance plan (see Form 2.4-1, Water Quality Credits). Form 4.3-9 Item 8 includes instructions on how to apply water quality credits when computing the DCV that must be met through alternative compliance. Alternative compliance plans may include one or more of the following elements: · On-site structural treatment control BMP - All treatment control BMP should be located as close to possible to the pollutant sources and should not be located within receiving waters; · Off-site structural treatment control BMP - Pollutant removal should occur prior to discharge of runoff to receiving waters; · Urban runoff fund or In-lieu program, if available Depending upon the proposed alternative compliance plan, approval by the executive officer may or may not be required (see Section 6 of the TGD for WQMP). Water Quality Management Plan (WQMP) 5-1 Section 5 Inspection and Maintenance Responsibility for Post Construction BMP All BMP included as part of the project WQMP are required to be maintained through regular scheduled inspection and maintenance (refer to Section 8, Post Construction BMP Requirements, in the TGD for WQMP). Fully complete Form 5-1 summarizing all BMP included in the WQMP. Attach additional forms as needed. The WQMP shall also include a detailed Operation and Maintenance Plan for all BMP and may require a Maintenance Agreement (consult the jurisdiction’s LIP). If a Maintenance Agreement is required, it must also be attached to the WQMP. Water Quality Management Plan (WQMP) 5-2 Form 5-1 BMP Inspection and Maintenance (use additional forms as necessary) BMP Reponsible Party(s) Inspection/ Maintenance Activities Required Minimum Frequency of Activities S1 – Provide storm drain system stenciling and signage (CASQA BMP SD-13) Owner Replace when the stenciling and signage fades to maintain legibility. Biannually as necessary S3 – Design and construct trash and waste storage areas including a solid canopy-style roof to reduce pollution introduction (CASQA BMP SD-32) Owner Routine inspection of the trash area should be provided by the owner’s representative. Weekly A sign shall be posted requiring that trash container lids be closed after depositing trash Daily Debris shall be swept or wiped clean and deposited into trash receptacles. Weekly Regular trash dumpster pickup Weekly S4 – Use efficient irrigation systems and landscape design, water conservation, smart controllers, and source control (CASQA BMP SD-12) Owner Inspect irrigation equipment for proper operation. Monthly Check water sensors and adjust irrigation heads and timing as necessary Monthly S5 – Finish grade of landscaped areas at a minimum of 1-2 inches below top of curb, sidewalk, or pavement Owner Inspect landscaped areas to assure that the landscaped areas are a minimum of 1- 2 inches below top of curb, sidewalk, or pavement. Monthly S6 - Protect slopes and channels and provide energy dissipation Owner Inspect for erosion of slopes. Monthly and after storm events. N14 – Catch Basin Inspection Program Owner The site owners shall inspect all on-site catch basins on a quarterly frequency for accumulation of sediment, trash, debris, and for evidence of illegal dumping. All catch basins shall be cleaned annually or whenever debris accumulates to a level greater than 25% of sump capacity. Quarterly Water Quality Management Plan (WQMP) 5-3 N15 – Vacuum Sweeping of Private Streets and Parking Lots (CASQA BMPs SC-43 and SC-70) Owner All paved areas of the site shall be vacuum swept by owner’s contractor. Weekly SC-41 Building & Grounds Maintenance Owner Perform regular landscape maintenance that includes trimming and mowing, repair/replacement of damage or diseased vegetation, replanting of bare areas, etc. Perform regular grounds maintenance that includes trash and litter removal, etc. Additional repair activities will be performed as necessary. Weekly SC-44 Drainage System Maintenance Owner Remove any trash, debris, or other obstructions. Make structural repairs as necessary. The drainage system and inlets shall be inspected a minimum of 3 times per year, including once per year, prior to, during, and after the rainy season (Oct. 1st through April 30th). SD-11 Roof Runoff Controls Owner Roof runoff has direct connection to storm drain system. Ensure roof drain and overflow drains are cleaned. Annual inspection and cleaning of rooftop drain inlet and overflow drain. Proprietary BMP – Underground Infiltration System (ADS StormTech Chambers) Owner Removal of any sediments accumulated in the StormTech units. Repair damage to structure as necessary. Every 6 months for the first year of operation. Adjust inspection interval based on observations of sediment accumulation and high-water elevations. 6-1 Section 6 WQMP Attachments 6.1. Site Plan and Drainage Plan Include a site plan and drainage plan sheet set containing the following minimum information: 6.2 Electronic Data Submittal Minimum requirements include submittal of PDF exhibits in addition to hard copies. Format must not require specialized software to open. If the local jurisdiction requires specialized electronic document formats (as described in their local Local Implementation Plan), this section will describe the contents (e.g., layering, nomenclature, geo-referencing, etc.) of these documents so that they may be interpreted efficiently and accurately. 6.3 Post Construction Attach all O&M Plans and Maintenance Agreements for BMP to the WQMP. 6.4 Other Supporting Documentation  BMP Educational Materials  Activity Restriction – C, C&R’s & Lease Agreements  Project location  Site boundary  Land uses and land covers, as applicable  Suitability/feasibility constraints  Structural Source Control BMP locations  Site Design Hydrologic Source Control BMP locations  LID BMP details  Drainage delineations and flow information  Drainage connections Water Quality Management Plan (WQMP) Section 6.1 Section 6.1 Site Plan and Drainage Plan Water Quality Management Plan (WQMP) Appendix A-1 Appendix A Vicinity Map, Exhibits 'B ' LID BMP Performance Criteria for Design Capture Volume 1-hour rainfall depth (in) for a 2-year return period from http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=ca =0.526 s.f. acres s.f. acres % s.f. acres % DMA-1 450,846 10.35 38,446 0.88 8.53% 412,400 9.47 91.47% 0.752 0.78 48-hrs 43,198 DMA-2 238,708 5.48 38,858 0.89 16.28% 199,850 4.59 83.72% 0.645 0.78 48-hrs 19,610 Total 689,554 77,304 612,250 62,807 Note: See Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume for more information. BMP Sizing Calculation Drawdow n Rate Design Capture DA#Area Pervious Area Impervious Area Runoff Coefficien Mean 6-hr Precipitati City of Fontana WQMP Handbook September 2016 - 7 - Figure 2-2 HCOC Exempt Areas HCOC Exempt Areas City of Fontana WQMP Handbook 0 1 2 •••-====::J Miles N A --Receiving Water -Basin/Dam •••• 1 , • _ City of Fontana HCOC Exempt Areas 1-Sump Conditions 3-Diversion to Storage 1-Sump Conditions, 3-Diversion to Storage NOAA Atlas 14, Volume 6, Version 2 Location name: Fontana, California, USA* Latitude: 34.0625°, Longitude: -117.456° Elevation: 1065.15 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic, Ishani Roy, Carl Trypaluk, Dale Unruh, Fenglin Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 0.105 (0.088-0.127) 0.138 (0.115-0.167) 0.183 (0.152-0.222) 0.221 (0.182-0.271) 0.274 (0.218-0.348) 0.317 (0.247-0.412) 0.363 (0.275-0.483) 0.412 (0.303-0.564) 0.481 (0.339-0.688) 0.538 (0.366-0.797) 10-min 0.151 (0.126-0.183) 0.198 (0.165-0.240) 0.262 (0.217-0.319) 0.316 (0.260-0.388) 0.393 (0.312-0.499) 0.455 (0.354-0.590) 0.520 (0.394-0.692) 0.590 (0.435-0.809) 0.689 (0.487-0.987) 0.771 (0.525-1.14) 15-min 0.182 (0.152-0.221) 0.239 (0.199-0.290) 0.317 (0.263-0.385) 0.382 (0.315-0.469) 0.475 (0.378-0.604) 0.550 (0.428-0.714) 0.629 (0.477-0.837) 0.713 (0.526-0.978) 0.834 (0.588-1.19) 0.932 (0.635-1.38) 30-min 0.274 (0.228-0.331) 0.359 (0.299-0.435) 0.475 (0.394-0.578) 0.573 (0.472-0.704) 0.713 (0.567-0.905) 0.825 (0.642-1.07) 0.943 (0.715-1.26) 1.07 (0.788-1.47) 1.25 (0.883-1.79) 1.40 (0.952-2.07) 60-min 0.401 (0.334-0.486) 0.526 (0.438-0.638) 0.696 (0.578-0.847) 0.840 (0.691-1.03) 1.04 (0.830-1.33) 1.21 (0.940-1.57) 1.38 (1.05-1.84) 1.57 (1.16-2.15) 1.83 (1.29-2.62) 2.05 (1.40-3.04) 2-hr 0.598 (0.499-0.725) 0.775 (0.645-0.940) 1.01 (0.838-1.23) 1.20 (0.991-1.48) 1.47 (1.17-1.87) 1.69 (1.31-2.19) 1.90 (1.44-2.53) 2.13 (1.57-2.92) 2.45 (1.73-3.51) 2.71 (1.84-4.01) 3-hr 0.761 (0.634-0.922) 0.981 (0.816-1.19) 1.27 (1.05-1.55) 1.51 (1.24-1.85) 1.83 (1.46-2.33) 2.08 (1.62-2.70) 2.34 (1.77-3.11) 2.61 (1.92-3.57) 2.97 (2.10-4.25) 3.26 (2.22-4.83) 6-hr 1.08 (0.903-1.31) 1.40 (1.16-1.69) 1.80 (1.49-2.19) 2.12 (1.75-2.60) 2.56 (2.03-3.25) 2.89 (2.25-3.75) 3.22 (2.44-4.29) 3.56 (2.62-4.88) 4.01 (2.83-5.74) 4.37 (2.97-6.47) 12-hr 1.43 (1.19-1.74) 1.86 (1.55-2.26) 2.40 (1.99-2.92) 2.83 (2.33-3.47) 3.39 (2.70-4.31) 3.81 (2.97-4.95) 4.23 (3.21-5.63) 4.65 (3.43-6.37) 5.20 (3.67-7.44) 5.62 (3.83-8.33) 24-hr 1.93 (1.70-2.22) 2.54 (2.24-2.93) 3.31 (2.92-3.83) 3.91 (3.42-4.56) 4.70 (3.98-5.66) 5.28 (4.38-6.49) 5.85 (4.74-7.37) 6.41 (5.05-8.30) 7.15 (5.41-9.65) 7.70 (5.63-10.7) 2-day 2.32 (2.05-2.67) 3.13 (2.76-3.61) 4.15 (3.66-4.80) 4.96 (4.34-5.79) 6.03 (5.11-7.27) 6.83 (5.66-8.40) 7.61 (6.17-9.59) 8.40 (6.62-10.9) 9.44 (7.14-12.7) 10.2 (7.47-14.3) 3-day 2.51 (2.22-2.89) 3.44 (3.04-3.96) 4.63 (4.08-5.36) 5.58 (4.88-6.51) 6.85 (5.80-8.26) 7.81 (6.48-9.61) 8.77 (7.10-11.0) 9.74 (7.67-12.6) 11.0 (8.34-14.9) 12.0 (8.78-16.7) 4-day 2.69 (2.38-3.10) 3.74 (3.30-4.31) 5.09 (4.49-5.89) 6.17 (5.40-7.20) 7.63 (6.46-9.19) 8.74 (7.25-10.7) 9.85 (7.98-12.4) 11.0 (8.65-14.2) 12.5 (9.45-16.9) 13.7 (9.99-19.1) 7-day 3.06 (2.71-3.53) 4.33 (3.83-5.00) 5.99 (5.28-6.93) 7.34 (6.42-8.56) 9.17 (7.77-11.1) 10.6 (8.78-13.0) 12.0 (9.73-15.1) 13.5 (10.6-17.5) 15.5 (11.7-20.9) 17.0 (12.4-23.7) 10-day 3.31 (2.93-3.82) 4.73 (4.18-5.46) 6.61 (5.83-7.64) 8.14 (7.12-9.50) 10.3 (8.68-12.4) 11.9 (9.86-14.6) 13.6 (11.0-17.1) 15.3 (12.0-19.8) 17.6 (13.3-23.8) 19.5 (14.3-27.2) 20-day 3.94 (3.49-4.55) 5.71 (5.05-6.59) 8.10 (7.14-9.37) 10.1 (8.82-11.8) 12.9 (10.9-15.5) 15.1 (12.5-18.5) 17.4 (14.1-21.9) 19.8 (15.6-25.6) 23.2 (17.5-31.2) 25.8 (18.9-36.1) 30-day 4.65 (4.12-5.36) 6.73 (5.95-7.77) 9.57 (8.44-11.1) 12.0 (10.5-14.0) 15.4 (13.0-18.5) 18.1 (15.0-22.3) 21.0 (17.0-26.4) 24.0 (19.0-31.1) 28.4 (21.5-38.3) 31.9 (23.3-44.5) 45-day 5.52 (4.89-6.36) 7.88 (6.97-9.09) 11.2 (9.84-12.9) 14.0 (12.2-16.3) 18.0 (15.3-21.7) 21.3 (17.7-26.2) 24.8 (20.1-31.3) 28.6 (22.6-37.1) 34.1 (25.8-45.9) 38.5 (28.2-53.8) 60-day 6.52 (5.77-7.51) 9.14 (8.09-10.6) 12.8 (11.3-14.9) 16.0 (14.0-18.7) 20.7 (17.5-24.9) 24.5 (20.4-30.2) 28.7 (23.2-36.1) 33.2 (26.1-43.0) 39.7 (30.1-53.6) 45.2 (33.0-63.0) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.0625&... 1 of 4 4/5/2022, 10:04 AM Back to Top Maps & aerials Small scale terrain Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.0625&... 2 of 4 4/5/2022, 10:04 AM Large scale terrain Large scale map Large scale aerial + – 3km 2mi + – 100km 60mi + – 100km 60mi Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.0625&... 3 of 4 4/5/2022, 10:04 AM Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: HDSC.Questions@noaa.gov Disclaimer Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=34.0625&... 4 of 4 4/5/2022, 10:04 AM Water Quality Management Plan (WQMP) Section 6.4 Appendix B BMP Calculatons and Manufacturer Cutsheets LID BMP Performance Criteria for Design Capture Volume 1-hour rainfall depth (in) for a 2-year return period from http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=ca =0.526 s.f. acres s.f. acres % s.f. acres % DMA-1 450,846 10.35 38,446 0.88 8.53% 412,400 9.47 91.47% 0.752 0.78 48-hrs 43,198 DMA-2 238,708 5.48 38,858 0.89 16.28% 199,850 4.59 83.72% 0.645 0.78 48-hrs 19,610 Total 689,554 77,304 612,250 62,807 Note: See Form 4.2-1 LID BMP Performance Criteria for Design Capture Volume for more information. BMP Sizing Calculation Drawdow n Rate Design Capture DA#Area Pervious Area Impervious Area Runoff Coefficien Mean 6-hr Precipitati DRAW-DOWN TIME CALCULATION PROJECT:22-309 CATAWBA AVE SPEC INDUSTRIAL PERCOLATION LOCATION: Basin N Total Storage Volume Percolation Rate (1)Area (2)Infiltration Rate Draw Down Time CF Inch/Hour SF CFS Hour 54,396 3.66 11,670 0.99 15.28 < 48 Hours - - Green Cells are output Note: 1.) See Appendix C for Percolation Test Results 2.) Footprint of proposed underground basin per BMP sizing calculations DRAW-DOWN TIME CALCULATION PROJECT:22-309 CATAWBA AVE SPEC INDUSTRIAL PERCOLATION LOCATION: Basin S Total Storage Volume Percolation Rate (1)Area (2)Infiltration Rate Draw Down Time CF Inch/Hour SF CFS Hour 23,186 3.66 5,425 0.46 14.01 < 48 Hours - - Green Cells are output Note: 1.) See Appendix C for Percolation Test Results 2.) Footprint of proposed underground basin per BMP sizing calculations 3.) Percolation Rate = Average of Infiltration Rates divided by Factor of Safety = 10.97/3 TECHNICAL GUIDANCE DOCUMENT APPENDICES VII-35 May 19, 2011 Worksheet H: Factor of Safety and Design Infiltration Rate and Worksheet Factor Category Factor Description Assigned Weight (w) Factor Value (v) Product (p) p = w x v A Suitability Assessment Soil assessment methods 0.25 Predominant soil texture 0.25 Site soil variability 0.25 Depth to groundwater / impervious layer 0.25 Suitability Assessment Safety Factor, SA = Σp B Design Tributary area size 0.25 Level of pretreatment/ expected sediment loads 0.25 Redundancy 0.25 Compaction during construction 0.25 Design Safety Factor, SB = Σp Combined Safety Factor, STOT= SA x SB Measured Infiltration Rate, inch/hr, KM (corrected for test-specific bias) Design Infiltration Rate, in/hr, KDESIGN = STOT × KM Supporting Data Briefly describe infiltration test and provide reference to test forms: Note: The minimum combined adjustment factor shall not be less than 2.0 and the maximum combined adjustment factor shall not exceed 9.0. StormTech® Chamber Systems for Stormwater Management MC-3500 & MC-7200 Design Manual 1 1.0 Product Information ....................................................................2 2.0 Foundation for Chambers................................................................8 3.0 Required Materials/Row Separation......................................................11 4.0 Hydraulics.............................................................................13 5.0 Cumulative Storage Volume.............................................................15 6.0 System Sizing..........................................................................20 7.0 Structural Cross Sections and Specifications ..............................................22 8.0 General Notes .........................................................................24 9.0 Inspection and Maintenance ............................................................25 *For SC-160LP, SC-310, SC-740 & DC-780 designs, please refer to the SC-160LP/SC-310/SC-740/DC-780 Design Manual. StormTech Engineering Services assists design professionals in specifying StormTech stormwater systems. This assistance includes the layout of chambers to meet the engineer’s volume requirements and the connections to and from the chambers. They can also assist converting and cost engineering projects currently specified with ponds, pipe, concrete vaults and other manufactured stormwater detention/ retention products. Please note that it is the responsibility of the site design engineer to ensure that the chamber bed layout meets all design requirements and is in compliance with applicable laws and regulations governing a project. This manual is exclusively intended to assist engineers in the design of subsurface stormwater systems using StormTech chambers. Table of Contents SHEETOF DA T E : PR O J E C T # : DR A W N : CH E C K E D : THI S D R A W I N G H A S B E E N P R E P A R E D B A S E D O N I N F O R M A T I O N P R O V I D E D T O A D S U N D E R T H E D I R E C T I O N O F T H E S I T E D E S I G N E N G I N E E R O R O T H E R P R OJE C T R E P R E S E N T A T I V E . T H E S I T E D E S I G N E N G I N E E R S H A L L R E V I E W T H I S D R A W I N G P R I O R T O C O N S T R U C T I O N . I T I S T H E U L T I M A T E RES P O N S I B I L I T Y O F T H E S I T E D E S I G N E N G I N E E R T O E N S U R E T H A T T H E P R O D U C T ( S ) D E P I C T E D A N D A L L A S S O C I A T E D D E T A I L S M E E T A L L A P P L I C A B L E L A W S , R E G U L A T I O N S , A N D P R O J E C T R E Q U I R E M E N T S . 464 0 T R U E M A N B L V D HIL L I A R D , O H 4 3 0 2 6 2 5 05 / 1 2 / 2 1 S1 2 3 4 5 6 JE K JE K MC - 3 5 0 0 C H A M B E R EX A M P L E P R O J E C T DAT E DRW N CH K D DES C R I P T I O N 00 15' 30' St o r m T e c h Ch a m b e r S y s t e m 888 - 8 9 2 - 2 6 9 4 | WW W . S T O R M T E C H . C O M ® NOTES·MANIFOLD SIZE TO BE DETERMINED BY SITE DESIGN ENGINEER. SEE TECHNICAL NOTE 6.32 FOR MANIFOLD SIZINGGUIDANCE.·DUE TO THE ADAPTATION OF THIS CHAMBER SYSTEM TO SPECIFIC SITE AND DESIGN CONSTRAINTS, IT MAY BENECESSARY TO CUT AND COUPLE ADDITIONAL PIPE TO STANDARD MANIFOLD COMPONENTS IN THE FIELD.·THE SITE DESIGN ENGINEER MUST REVIEW ELEVATIONS AND IF NECESSARY ADJUST GRADING TO ENSURE THE CHAMBERCOVER REQUIREMENTS ARE MET.·THIS CHAMBER SYSTEM WAS DESIGNED WITHOUT SITE-SPECIFIC INFORMATION ON SOIL CONDITIONS OR BEARINGCAPACITY. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR DETERMINING THE SUITABILITY OF THE SOIL ANDPROVIDING THE BEARING CAPACITY OF THE INSITU SOILS. THE BASE STONE DEPTH MAY BE INCREASED OR DECREASEDONCE THIS INFORMATION IS PROVIDED. 24" ADS N-12 BOTTOM CONNECTIONINVERT 2.06" ABOVE CHAMBER BASE(SEE NOTES) 18" X 18" ADS N-12 TOP MANIFOLDINVERT 20.03" ABOVE CHAMBER BASE(SEE NOTES) 6" ADS N-12 DUAL WALL PERFORATED HDPE UNDERDRAIN(SIZE TBD BY ENGINEER / SOLID OUTSIDE PERIMETER STONE) INSPECTION PORT PROPOSED STRUCTURE W/ELEVATED BYPASS MANIFOLDMAXIMUM INLET FLOW 16.2 CFS(DESIGN BY ENGINEER / PROVIDED BY OTHERS) PROPOSED OUTLET CONTROL STRUCTUREMAXIMUM OUTLET FLOW 11.0 CFS(DESIGN BY ENGINEER / PROVIDED BY OTHERS) ISOLATOR ROW PLUS(SEE DETAIL ) PLACE MINIMUM 17.5' OF ADSPLUS175 WOVEN GEOTEXTILE OVERBEDDING STONE AND UNDERNEATH CHAMBER FEET FOR SCOURPROTECTION AT ALL CHAMBER INLET ROWS 18" PARTIAL CUT END CAP, PART# MC3500IEPP18TC ORMC3500IEPP18TWTYP OF ALL MC-3500 18" TOP CONNECTIONS 18" PARTIAL CUT END CAP, PART# MC3500IEPP18BC OR MC3500IEPP18BWTYP OF ALL MC-3500 18" BOTTOM CONNECTIONS 24" PARTIAL CUT END CAP, PART# MC3500IEPP24BC OR MC3500IEPP24BWTYP OF ALL MC-3500 24" BOTTOM CONNECTIONS AND ISOLATOR PLUS ROWS PROPOSED LAYOUT60STORMTECH MC-3500 CHAMBERS12STORMTECH MC-3500 END CAPS12STONE ABOVE (in)9 STONE BELOW (in)40 % STONE VOID12,149 INSTALLED SYSTEM VOLUME (CF) (PERIMETER STONE INCLUDED)3,674 SYSTEM AREA (ft²)280 SYSTEM PERIMETER (ft) PROPOSED ELEVATIONS979.50 MAXIMUM ALLOWABLE GRADE (TOP OF PAVEMENT/UNPAVED)973.50 MINIMUM ALLOWABLE GRADE (UNPAVED WITH TRAFFIC)973.00 MINIMUM ALLOWABLE GRADE (UNPAVED NO TRAFFIC)973.00 MINIMUM ALLOWABLE GRADE (BASE OF FLEXIBLE PAVEMENT)973.00 MINIMUM ALLOWABLE GRADE (TOP OF RIGID PAVEMENT)972.50 TOP OF STONE971.50 TOP OF MC-3500 CHAMBER969.42 18" TOP MANIFOLD INVERT967.92 24" BOTTOM CONNECTION INVERT967.92 24" ISOLATOR ROW PLUS CONNECTION INVERT967.90 18" BOTTOM MANIFOLD INVERT967.75 BOTTOM OF MC-3500 CHAMBER967.00 UNDERDRAIN INVERT967.00 BOTTOM OF STONE 18" X 18" ADS N-12 BOTTOM MANIFOLDINVERT 1.77" ABOVE CHAMBER BASE(SEE NOTES) 22 . 2 5 ' 20 . 2 5 ' 96.15'89.77' 43 . 6 0 ' 41. 0 0 ' 71.86'61.10' 4 StormTech MC-7200 Chamber Designed to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for private (commercial) and public applications. StormTech chambers can also be used in conjunction with Green Infrastructure, thus enhancing the performance and extending the service life of these practices. MC-7200 Chamber (not to scale) Nominal Specifications Size (LxWxH)83.4” x 100” x 60” (2120 x 2540 x 1524 mm) Chamber Storage 175.9 ft3 (4.98 m3) Min. Installed Storage*267.3 ft3 (7.56 m3) Weight 205 lbs (92.9 kg) *Assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below chambers, 9” (230 mm) of stone between chambers/end caps and 40% stone porosity. MC-7200 Chamber (not to scale) Nominal Specifications Size (LxWxH)38” x 90” x 61” (965 x 2286 x 1549 mm) End Cap Storage 39.5 ft3 (1.12 m3) Min. Installed Storage*115.3 ft3 (3.26 m3) Weight 90.0 lbs (40.8 kg) *Assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below, 12” (300 mm) of stone perimeter, 9” (230 mm) of stone between chambers/end caps and 40% stone porosity. Shipping 7 chambers/pallet 5 end caps/pallet 6 pallets/truck 5 Storage Volume Per Chamber/End Cap ft3 (m3) Bare Unit Storage ft3 (m3) Chamber/End Cap and Stone Volume — Stone Foundation Depth in. (mm) 9 (230)12 (300)15 (375)18 (450) Chamber 175.9 (4.98)267.3 (7.57)273.3 (7.74)279.3 (7.91)285.2 (8.08) End Cap 39.5 (1.12)115.3 (3.26)111.9 (3.17)121.9 (3.45)125.2 (3.54) Note: Assumes 9” (230 mm) row spacing, 40% stone porosity, 12” (300 mm) stone above and includes the bare chamber/end cap volume. End cap volume assumes 12” (300 mm) stone perimeter in front of end cap. Volume of Excavation Per Chamber/End Cap yd3 (m3) Stone Foundation Depth 9” (230 mm)12” (300 mm)15” (375 mm)18” (450 mm) Chamber 17.2 (13.2)17.7 (13.5)18.3 (14.0)18.8 (14.4) End Cap 9.7 (7.4)10.0 (7.6)10.3 (7.9)10.6 (8.1) Note: Assumes 9” (230 mm) of separation between chamber rows, 12” (300 mm) of perimeter in front of the end caps, and 24” (600 mm) of cover. The volume of excavation will vary as depth of cover increases. Amount of Stone Per Chamber ENGLISH tons (yd3) Stone Foundation Depth 9”12”15”18” Chamber 11.9 (8.5)12.6 (9.0)13.4 (9.6)14.6 (10.1) End Cap 9.8 (7.0)10.2 (7.3)10.6 (7.6)11.1 (7.9) METRIC kg (m3)230 mm 300 mm 375 mm 450 mm Chamber 10796 (6.5)11431 (6.9)12156 (7.3)13245 (7.7) End Cap 8890 (5.3)9253 (5.5)9616 (5.8)10069 (6.0) Note: Assumes 12” (300 mm) of stone above and 9” (230 mm) row spacing and 12” (300 mm) of perimeter stone in front of end caps. Special applications will be considered on a project by project basis. Please contact our application department should you have a unique application for our team to evaluate. 6 1.0 Product Information 1.1 Product Design StormTech’s commitment to thorough product testing programs, materials evaluation and adherence to national standards has resulted in two more superior products. Like other StormTech chambers, the MC- 3500 and MC-7200 are designed to meet the full scope of design requirements of the American Society of Testing Materials (ASTM) International specification F2787 “Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers” and produced to the requirements of the ASTM F 2418 “Standard Specification for Polypropylene (PP) Corrugated Stormwater Collection Chambers”. The StormTech MC-3500 and MC-7200 chambers provide the full AASHTO safety factors for live loads and permanent earth loads. The ASTM F 2787 standard provides specific guidance on how to design thermoplastic chambers in accordance with AASHTO Section 12.12. of the AASHTO LRFD Bridge Design Specifications. ASTM F 2787 requires that the safety factors included in the AASHTO guidance are achieved as a prerequisite to meeting ASTM F 2418. The three standards provide both the assurance of product quality and safe structural design. The design of larger chambers in the same tradition of our other chambers required the collaboration of experts in soil-structure interaction, plastics and manufacturing. Years of extensive research, including laboratory testing and field verification, were required to produce chambers that are ready to meet both the rigors of installation and the longevity expected by engineers and owners. This Design Manual provides the details and specifications necessary for consulting engineers to design stormwater management systems using the MC-3500 and MC-7200 chambers. It provides specifications for storage capacities, layout dimensions as well as requirements for design to ensure a long service life. The basic design concepts for foundation and backfill materials, subgrade bearing capacities and row spacing remain equally as pertinent for the MC-3500 and MC-7200 as the SC-740, SC-310 and DC-780 chamber systems. However, since many design values and dimensional requirements are different for these larger chambers than the SC-740, SC-310 and DC-780 chambers, design manuals and installation instructions are not interchangeable. This manual includes only those details, dimensions, cover limits, etc for the MC-3500 and MC-7200 and is intended to be a stand-alone design guide for the MC- 3500 and MC-7200 chambers. A Construction Guide specifically for these two chamber models has also been published. 1.2 Technical Support The StormTech Technical Services Department is available to assist the engineer with the layout of MC-3500 and MC-7200 chamber systems and answer questions regarding all the StormTech chamber models. Call the Technical Services Department, email us at info@stormtech.com or contact your local StormTech representative. 1.3 MC-3500 and MC-7200 Chambers All StormTech chambers are designed to the full scope of AASHTO requirements without repeating end walls or other structural reinforcing. StormTech’s continuously curved, elliptical arch and the surrounding angular backfill are the key components of the structural system. With the addition of patent pending integral stiffening ribs (Figure 5), the MC-3500 and MC-7200 are assured to provide a long, safe service life. Like other StormTech chambers, the MC-3500 and MC-7200 are produced from high quality, impact modified resins which are tested for short-term and long-term mechanical properties. With all StormTech chambers, one chamber type is used for the start, middle and end of rows. Rows are formed by overlapping the upper joint corrugation of the next chamber over the lower joint corrugation of the previous chamber (Figure 6). 1.4 Chamber Joints All StormTech chambers are designed with an optimized joining system. The height and width of the end corrugations have been designed to provide the required structural safety factors while providing an unobstructed flow path down each row. 7 1.0 Product Information To assist the contractor, StormTech chambers are molded with simple assembly instructions and arrows that indicate the direction in which to build rows. The corrugation valley immediately adjacent to the lower joint corrugation is marked “Overlap Here - Lower Joint.” The corrugation valley immediately adjacent to the upper joint corrugation is marked “Build This Direction - Upper Joint.” Two people can safely and efficiently carry and place chambers without cumbersome connectors, special tools or heavy equipment. Each row of chambers must begin and end with a joint corrugation. Since joint corrugations are of a different size than the corrugations along the body of the chamber, chambers cannot be field cut and installed. Only whole MC-3500 and MC-7200 chambers can be used. For system layout assistance contact StormTech. 1.5 MC-3500 and MC-7200 End Caps The MC-3500 and MC-7200 end caps are easy to install. These end caps are designed with a corrugation joint that fits over the top of either end of the chamber. The end cap joint is simply set over the top of either of the upper or lower chamber joint corrugations (Figure 7). The MC-3500 end cap has pipe cutting guides for 12”–24” (300 mm–600 mm) top inverts (Figure 9). The MC-7200 end cap has pipe cutting guides for 12”–42” (300 mm–1050 mm) bottom inverts and 12”–24” (300 mm–600 mm) top inverts (Figure 8). Standard and custom pre-cored end caps are available. MC-3500 pre-cored end caps, 18” in diameter and larger include a welded crown plate. Figure 5 - Chamber and End Cap Components Figure 6 - Chamber Joint Overlap Figure 7 - End Cap Joint Overlap 8 1.0 Product Information Figure 8 - MC-7200 End Cap Inverts Figure 9 - MC-3500 End Cap Inverts 2.1 Foundation Requirements StormTech chamber systems can be installed in various soil types. The subgrade bearing capacity and the cover height over the chambers determine the required depth of clean, crushed, angular foundation stone below the chambers. Foundation stone, also called bedding, is the stone between the subgrade soils and the feet of the chamber. Flexible structures are designed to transfer a significant portion of both live and dead loads through the surrounding soils. Chamber systems accomplish this by creating load paths through the columns of embedment stone between and around the rows of chambers. This creates load concentrations at the base of the columns between the rows. The foundation stone spreads out the concentrated loads to distributed loads that can be supported by the subgrade soils. Since increasing the cover height (top of chamber to finished grade) causes increasing soil load, a greater depth of foundation stone is necessary to distribute the load to the subgrade soils. Table 1 and 2 specify the minimum required foundation depths for varying cover heights and allowable subgrade bearing capacities. These tables are based on StormTech service loads. The minimum required foundation depth is 9” (230 mm) for both chambers. 2.0 Foundations for Chambers For additional guidance on foundation stone design please see our Technical Note 6.22 - StormTech Subgrade Performance 2.2 Weaker Soils StormTech has not provided guidance for subgrade bearing capacities less than 2000 pounds per square foot [(2.0 ksf) (96 kPa)]. These soils are often highly vari- able, may contain organic materials and could be more sensitive to moisture. A geotechnical engineer must be consulted if soils with bearing capacities less than 2000 psf (96 kPa) are present. 10 2.0 Foundations for Chambers Cover Hgt. ft.(m) Minimum Bearing Resistance for Service Loads ksf (kPa) 4.4(211)4.3(206)4.2(201)4.1(196)4.0(192)3.9(187)3.8(182)3.7(177)3.6(172)3.5(168)3.4(163)3.3(158)3.2(153)3.1(148)3.0(144)2.9(139)2.8(134)2.7(129)2.6(124)2.5(120)2.4(115)2.3(110)2.2(105)2.1(101)2.0(96) 2.0(0.61)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)21 (525)21 (525) 2.5(0.76)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)24 (600) 3.0(0.91)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)21 (525)21 (525)24 (600)24 (600)27 (675) 3.5(1.07)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)24 (600)24 (600)27 (675)30 (750) 4.0(1.22)9(230)9(230)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)21 (525)24 (600)27 (675)27 (675)30 (750)30 (750) 4.5(1.37)9(230)9(230)9(230)9(230)9(230)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)24 (600)24 (600)27 (675)27 (675)30 (750)33 (825)33 (825) 5.0(1.52)9(230)9(230)9(230)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)21 (525)24 (600)24 (600)27 (675)27 (675)30 (750)33 (825)33 (825)36 (900) 5.5(1.68)9(230)12(300)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)18(450)18(450)21 (525)21 (525)24 (600)24 (600)24 (600)27 (675)27 (675)30 (750)33 (825)33 (825)36 (900)36 (900) 6.0(1.83)12(300)12(300)12(300)12(300)12(300)15 (375)15 (375)15 (375)18(450)18(450)18(450)21 (525)21 (525)21 (525)24 (600)24 (600)27 (675)27 (675)30 (750)30 (750)33 (825)33 (825)36 (900)36 (900)36 (900) 6.5(1.98)12(300)12(300)15 (375)15 (375)15 (375)15 (375)18(450)18(450)18(450)18(450)21 (525)21 (525)24 (600)24 (600)24 (600)27 (675)27 (675)30 (750)30 (750)33 (825)33 (825)36 (900)36 (900)36 (900)36 (900) 7.0(2.13)15 (375)15 (375)15 (375)15 (375)18(450)18(450)18(450)18(450)21 (525)21 (525)21 (525)24 (600)24 (600)24 (600)27 (675)27 (675)30 (750)30 (750)33 (825)36 (900)36 (900)36 (900)36 (900)36 (900)36 (900) NOTE: The design engineer is solely responsible for assessing the bearing resistance (allowable bearing capacity) of the subgrade soils and determining the depth of foundation stone. Subgrade bearing resistance should be assessed with consideration for the range of soil moisture conditions expected under a stormwater system. Table 2 - MC-7200 Minimum Required Foundation Depth in inches (millimeters) Assumes 9” (230 mm) row spacing. Figure 10B - MC-7200 Structural Cross Section Detail (Not to Scale) 24"(600 mm) MIN* 7.0'(2.1 m)MAX 12" (300 mm) TYP100" (2540 mm) ADS GEOSYNTHETICS 601T NON-WOVENGEOTEXTILE ALL AROUND CLEAN, CRUSHED,ANGULAR EMBEDMENT STONE 12" (300 mm) MIN 12" (300 mm) MIN 9"(230 mm) MIN DEPTH OF STONE TO BE DETERMINEDBY SITE DESIGN ENGINEER 9" (230 mm) MIN PERIMETER STONE EXCAVATION WALL(CAN BE SLOPED OR VERTICAL) MC-7200END CAP SITE DESIGN ENGINEER IS RESPONSIBLE FOR ENSURINGTHE REQUIRED BEARING CAPACITY OF SOILS PAVEMENT LAYER (DESIGNEDBY SITE DESIGN ENGINEER) 60"(1524 mm) CHAMBERS SHALL MEET ASTM F2419 "STANDARDSPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATEDWALL STORMWATER COLLECTION CHAMBERS". EMBEDMENT STONE SHALL BE A CLEAN, CRUSHED AND ANGULARSTONE WITH AN AASHTO M43 DESIGNATION BETWEEN #3 AND #4 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787"STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTICCORRUGATED STORMWATER COLLECTION CHAMBERS". *MINIMUM COVER TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR, INCREASE COVER TO 30" (750 mm). GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES,COMPACT IN 12" (300 mm) MAX LIFTS TO 95% PROCTOR DENSITY. SEETHE TABLE OF ACCEPTABLE FILL MATERIALS. Special applications will be considered on a project by project basis. Please contact our applications department should you have a unique application for our team to evaluate. 11 3.0 Required Materials/Row Separation 3.1 Foundation and Embedment Stone The stone surrounding the chambers consists of the foundation stone below the chambers and embedment stone surrounding the chambers. The foundation stone and embedment stone are important components of the structural system and also provide open void space for stormwater storage. Table 3 provides the stone specifications that achieve both structural requirements and a porosity of 40% for stormwater storage. Figure 11 specifies the extents of each backfill stone location. Once layer ‘C’ is placed, any soil/material can be placed in layer ‘D’ up to the finished grade. Most pavement subbase soils can be used to replace the materials of layer ‘C’ or ‘D’ at the design engineer’s discretion. Table 3 - Acceptable Fill Materials Please Note:1. The listed AASHTO designations are for gradations only. The stone must also be clean, crushed, angular. For example, a specification for #4 stone would state: “clean, crushed, angular NO. 4 (AASHTO m43) stone”.2. Stormtech compaction requirements are met for ‘A’ location materials when placed and compacted in 9” (230 mm) (max) lifts using two full coverages with a vibratory compactor.3. Where infiltration surfaces may be compromised by compaction, for standard design load conditions, a flat surface may be achieved by raking or dragging without compaction equipment. For special load designs, contact stormtech for compaction requirements. Figure 11 - Fill Material Locations SHEET OF DA T E : PR O J E C T # : DR A W N : CH E C K E D : TH I S D R A W I N G H A S B E E N P R E P A R E D B A S E D O N I N F O R M A T I O N P R O V I D E D T O A D S U N D E R T H E D I R E C T I O N O F T H E S I T E D E S I G N E N G I N E E R O R O T H E R P R OJE C T R E P R E S E N T A T I V E . T H E S I T E D E S I G N E N G I N E E R S H A L L R E V I E W T H I S D R A W I N G P R I O R T O C O N S T R U C T I O N . I T I S T H E U L T I M A T E RE S P O N S I B I L I T Y O F T H E S I T E D E S I G N E N G I N E E R T O E N S U R E T H A T T H E P R O D U C T ( S ) D E P I C T E D A N D A L L A S S O C I A T E D D E T A I L S M E E T A L L A P P L I C A B L E L A W S , R E G U L A T I O N S , A N D P R O J E C T R E Q U I R E M E N T S . 46 4 0 T R U E M A N B L V D HIL L I A R D , O H 4 3 0 2 6 AD V A N C E D D R A I N A G E S Y S T E M S , I N C . R 2 # MM / D D / Y Y S# # # # # # XX X XX X CIT Y - S T A T E PR O J E C T N A M E DA T E DR W N CH K D DE S C R I P T I O N 00 1' 2' ACCEPTABLE FILL MATERIALS: STORMTECH MC-7200 CHAMBER SYSTEMS PLEASE NOTE:1.THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE".2.STORMTECH COMPACTION REQUIREMENTS ARE MET FOR 'A' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" (230 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR.3.WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FORCOMPACTION REQUIREMENTS.4.ONCE LAYER 'C' IS PLACED, ANY SOIL/MATERIAL CAN BE PLACED IN LAYER 'D' UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR 'D' AT THE SITE DESIGN ENGINEER'S DISCRETION. NOTES: 1.CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418-16a, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS" CHAMBER CLASSIFICATION 60x101 2.MC-7200 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3.THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 4.PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 5.REQUIREMENTS FOR HANDLING AND INSTALLATION: ·TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. ·TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 3”. ·TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT AS DEFINED IN SECTION 6.2.8 OF ASTM F2418 SHALL BE GREATER THAN OR EQUAL TO 500 LBS/IN/IN. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. MATERIAL LOCATION DESCRIPTION AASHTO MATERIALCLASSIFICATIONS COMPACTION / DENSITY REQUIREMENT D FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS FROM THETOP OF THE 'C' LAYER TO THE BOTTOM OF FLEXIBLEPAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THATPAVEMENT SUBBASE MAY BE PART OF THE 'D' LAYER ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS.CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS.N/A PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVEDINSTALLATIONS MAY HAVE STRINGENT MATERIAL ANDPREPARATION REQUIREMENTS. C INITIAL FILL: FILL MATERIAL FOR LAYER 'C' STARTS FROM THETOP OF THE EMBEDMENT STONE ('B' LAYER) TO 24" (600 mm)ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENTSUBBASE MAY BE A PART OF THE 'C' LAYER. GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES ORPROCESSED AGGREGATE. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THISLAYER. AASHTO M145¹A-1, A-2-4, A-3 OR AASHTO M43¹3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 BEGIN COMPACTIONS AFTER 24" (600 mm) OF MATERIAL OVERTHE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN12" (300 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FORWELL GRADED MATERIAL AND 95% RELATIVE DENSITY FORPROCESSED AGGREGATE MATERIALS. B EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERSFROM THE FOUNDATION STONE ('A' LAYER) TO THE 'C' LAYERABOVE.CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹3, 4 A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THESUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER.CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹3, 4 PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE.2,3 NO COMPACTION REQUIRED. 24"(600 mm) MIN* MC-7200 - 7.0' (2.1 m) MAXMC-3500 - 8.0' (2.4m) MAX 12" (300 mm) MINMC-7200 - 100" (2540 mm)MC-3500 - 77" (1946 mm) ADS GEOSYNTHETICS 601T NON-WOVENGEOTEXTILE ALL AROUND CLEAN, CRUSHED,ANGULAR STONE IN A & B LAYERS 12" (300 mm) MIN 12" (300 mm) MIN MC-7200 - 9" (230 mm) MINMC-3500 - 6" (150 mm) MIN D C B A *TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVEDINSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR,INCREASE COVER TO 30" (750 mm). DEPTH OF STONE TO BE DETERMINEDBY SITE DESIGN ENGINEER 9" (230 mm) MIN PERIMETER STONE(SEE NOTE 4) EXCAVATION WALL(CAN BE SLOPED OR VERTICAL) END CAP SUBGRADE SOILS PAVEMENT LAYER (DESIGNEDBY SITE DESIGN ENGINEER) MC-7200 - 60" (1524 mm)MC-3500 - 45" (1143 mm) Material Location Description AASHTO Material Classifications Compaction / Density Requirement D Final Fill: Fill Material for layer ‘D’ starts from the top of the ‘C’ layer to the bottom of flexible pavement or unpaved finished grade above. Note that pavement subbase may be part of the ‘D’ layer. Any soil/rock materials, native soils, or per engineer’s plans. check plans for pavement subgrade requirements. N/A Prepare per site design engineer’s plans. Paved installations may have stringent material and preparation requirements. C Initial Fill: Fill material for layer ‘C’ starts from the top of the embedment stone (‘B’ layer) to 24” (600 mm) above the top of the chamber. note that pavement subbase may be a part of the ‘C’ layer. Granular well-graded soil/aggregate mixtures, <35% fines or processed aggregate.most pavement subbase materials can be used in lieu of this layer. AASHTO M1451 a-1,a-2-4,a-3orAASHTO M431 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 Begin compactoins after 24” (600 mm) of material over the chambers is reached. compact addtional layers in 12” (300 mm) max lifts to a min. 95% proctor density for well-graded material and 95% relative density for processed aggregate materials. B Embedment Stone: Fill surrounding the chambers form the foudation stone (‘A’ layer) to the ‘C’ layer above. Clean, crushed, angular stone AASHTO M431 3, 4 No compaction required A Foundation Stone: Fill below chambers from the subgrade up to the foot (bottom) of the chamber. Clean, crushed, angular stone AASHTO M431 3, 4 Plate compact or roll to achieve a flat surface. 2 3 12 3.0 Required Materials/Row Separation 3.2 Fill Above Chambers Refer to Table 3 and Figure 11 for acceptable fill material above the clean, crushed, angular stone. StormTech requires a minimum of 24” (600 mm) from the top of the chamber to the bottom of flexible pavement. For non-paved installations where rutting from vehicles may occur StormTech requires a minimum of 30” (750 mm) from top of chamber to finished grade. 3.3 Geotextile Separation A non-woven geotextile meeting AASHTO M288 Class 2 separation requirements must be installed to completely envelope the system and prevent soil intrusion into the crushed, angular stone. Overlap adjacent geotextile rolls per AASHTO M288 separation guidelines. Contact StormTech for a list of acceptable geotextiles. 3.4 Parallel Row Separation/Perpendicular Bed Separation Parallel Row Separation The minimum installed spacing between parallel rows after backfilling is 9” (230 mm) for the MC- 7200 chambers and 6” (150mm) for the MC-3500 (measurement taken between the outside edges of the feet). Spacers may be used for layout convenience. Row spacing wider than the minimum spacing above may be specified. Perpendicular Bed Separation When beds are laid perpendicular to each other, a minimum installed spacing of 36” (900 mm) between beds is required. 3.5 Special Structural Designs StormTech engineers may provide special structural designs to enable deeper cover depths or increase the capacity to carry higher live loads. Special designs may utilize the additional strength that can be achieved by compaction of embedment stone or by increasing the spacing between rows. Increasing the spacing between chamber rows may also facilitate the application of StormTech chambers with either less foundation stone or with weaker subgrade soils. This may be a good option where vertical restrictions on site prevent the use of a deeper foundation. Contact ADS Engineering Services for more information on special structural designs. System Cross Section Minimum Row Spacing 13 4.0 Hydraulics 4.1 General StormTech subsurface chamber systems offer the flexibility for a variety of inlet and outlet configurations. Contact the StormTech Technical Services Department or your local StormTech representative for assistance configuring inlet and outlet connections. The open graded stone around and under the chambers provides a significant conveyance capacity ranging from approximately 0.8 cfs (23 l/s) to 13 cfs (368 l/s) per MC-3500 chamber and for the MC-7200 chamber. The actual conveyance capacity is dependent upon stone size, depth of foundation stone and head of water. Although the high conveyance capacity of the open graded stone is an important component of the flow network, StormTech recommends that a system of inlet and outlet manifolds be designed to distribute and convey the peak flow through the chamber system. It is the responsibility of the design engineer to provide the design flow rates and storage volumes for the stormwater system and to ensure that the final design meets all conveyance and storage requirements. However, StormTech will work with the design engineer to assist with manifold and chamber layouts that meet the design objectives. 4.2 The Isolator® Row Plus The Isolator Row Plus is a system that inexpensively captures total suspended solids (TSS) and debris and provides easy access for inspection and maintenance. In a typical configuration, a single layer of ADS Plus fabric is placed between the chambers and the stone foundations. This fabric traps and filters sediments as well as protects the stone base during cleaning and maintenance. Each installed MC-3500 chamber and MC-3500 end cap provides 42.9 ft2 (4.0 m2) and 7.5 ft2 (0.7 m2) of bottom filter area respectively. Each installed MC-7200 chamber and MC-7200 end cap provides 57.9 ft2 (5.4 m2) and 12.8 ft2 (1.19 m2) of bottom filter area respectively. The Isolator Row Plus can be configured for maintenance objectives or, in some regulatory jurisdictions, for water quality objectives. For water quality applications, the Isolator Row Plus can be sized based on water quality volume or flow rate. All Isolator Plus Rows require: 1) a manhole for maintenance access, 2) a means of diversion of flows to the Isolator Row Plus 3) a high flow bypass and 4)FLAMP (Flared End Ramp). When used on an Isolator Row Plus, a 24” FLAMP (flared end ramp) is attached to the inside of the inlet pipe with a provided threaded rod and bolt. The FLAMP then lays on top of the ADS Plus fabric.. Flow diversion can be accomplished by either a weir in the upstream access manhole or simply by feeding the Isolator Row Plus at a lower elevation than the high flow bypass. Contact StormTech for assistance sizing Isolator Plus Rows. When additional stormwater treatment is required, StormTech systems can be configured using a treatment train approach where other stormwater BMPs are located in series. Figure 12 - StormTech Isolator Row Plus Detail 14 STORMTECHISOLATOR ROW PLUS STRUCTURE WITH OVERFLOW WEIR(48" (1200 mm) MIN. DIA. WITH 24" (600 mm)SUMP RECOMMENDED FOR ACCESS) OPTIONAL PRE-TREATMENT 24" (600 mm) DIA. ACCESSPIPE REQUIRED OVERFLOW MANIFOLD STRUCTURE WITH OVERFLOW WEIR(48" (1200 mm) MIN. DIA. WITH 24" (600 mm)SUMP RECOMMENDED FOR ACCESS) STORMTECHCHAMBERS 4.0 Hydraulics Table 4 - Allowable Inlet Flows* Table 5 - Maximum Outlet Flow Rate Capacities From StormTech Oulet Manifolds Table 6 - Standard Distances From Base of Chamber to Invert of Inlet and Outlet Manifolds on StormTech End Caps Inlet Pipe Diameter Inches (mm)Allowable Maximum Flow Rate cfs (l/s) 12 (300)2.48 (70) 15 (375)3.5 (99) 18 (450)5.5 (156) 24 (600)8.5 (241) [MC-3500] 24 (600)9.5 (269) [MC-7200] Pipe Diameter Flow (CFS)Flow (L/S) 6” (150 mm)0.4 11.3 8” (200 mm)0.7 19.8 10” (250 mm)1.0 28.3 12” (300 mm)2.0 56.6 15” (375 mm)2.7 76.5 18” (450 mm)4.0 113.3 24” (600 mm)7.0 198.2 30” (750 mm)11.0 311.5 36” (900 mm)16.0 453.1 42” (1050 mm)22.0 623.0 48” (1200 mm)28.0 792.9 MC-3500 ENDCAPS Pipe Diameter Inv. (in)Inv. (mm) To p 6” (150 mm)33.21 841 8” (200 mm)31.16 789 10” (250 mm)29.04 738 12” (300 mm)26.36 671 15” (375 mm)23.39 594 18” (450 mm)20.03 509 24” (600 mm)14.48 369 Bo t t o m 12” (750 mm)1.35 34 15” (900 mm)1.5 40 18” (1050 mm)1.77 46 24” (1200 mm)2.06 52 MC-7200 ENDCAPS Pipe Diameter Inv. (in)Inv. (mm) To p 12” (300 mm)35.69 907 15” (375 mm)32.72 831 18” (450 mm)29.36 746 24” (600 mm)23.05 585 Bo t t o m 12” (750 mm)1.55 34 15” (900 mm)1.7 43 18” (1050 mm)1.97 50 24” (1200 mm)2.26 57 Figure 13 - Typical Inlet Configuration With Isolator Row Plus and Scour Protection 4.3 Inlet Manifolds The primary function of the inlet manifold is to convey and distribute flows to a sufficient number of rows in the chamber bed such that there is ample conveyance capacity to pass the peak flows without creating an unacceptable backwater condition in upstream piping or scour the foundation stone under the chambers. Manifolds are connected to the end caps either at the top or bottom of the end cap. Standard distances from the base of chamber to the invert of inlet and outlet manifolds connecting to StormTech end caps can be found in table 6. High inlet flow rates from either connection location produce a shear scour potential of the foundation stone. Inlet flows from top inlets also produce impingement scour potential. Scour potential is reduced when standing water is present over the foundation stone. However, for safe design across the wide range of applications, StormTech assumes minimal standing water at the time the design flow occurs. To minimize scour potential, StormTech recommends the installation of woven scour protection fabric at each inlet row. This enables a protected transition zone from the concentrated flow coming out of the inlet pipe to a uniform flow across the entire width of the chamber for both top and bottom connections. Allowable flow rates for design are dependent upon: the elevation of inlet pipe, foundation stone size and scour protection. With an appropriate scour protection geotextile installed from the end cap to at least 14.5 ft (4.42 m) in front of the inlet pipe for the MC-3500 and for the MC-7200, for both top and bottom feeds, the flow rates listed in Table 4 can be used for all StormTech specified foundation stone gradations. *See StormTech’s Tech Note 6.32 for manifold sizing guidance. *Assumes appropriate length of scour fabric per section 4.3 15 5.0 Cumulative Storage Volumes 4.4 Outlet Manifolds The primary function of the outlet manifold is to convey peak flows from the chamber system to the outlet control structure. Outlet manifolds are often sized for attenuated flows. They may be smaller in diameter and have fewer row connections than inlet manifolds. In some applications however, the intent of the outlet piping is to convey an unattenuated bypass flow rate and manifolds may be sized similar to inlet manifolds. Since chambers are generally flowing at or near full at the time of the peak outlet flow rate, scour is generally not governing and outlet manifold sizing is based on pipe flow equations. In most cases, StormTech recommends that outlet manifolds connect the same rows that are connected to an inlet manifold. This provides a continuous flow path through open conduits to pass the peak flow without dependence on passing peak flows through stone. The primary function of the underdrains is to draw down water stored in the stone below the invert of the manifold. Underdrains are generally not sized for conveyance of the peak flow. The maximum outlet flow rate capacities from StormTech outlet manifolds can be found in Table 5. 4.5 Inserta Tee® Inlet Connections Figure 15 - Inserta Tee Detail Figure 14 - Typical Inlet, Outlet and Underdrain Configuration BED PERIMETER STORMTECHCHAMBERS OUTLETMANIFOLD INLETMANIFOLD SCOURPROTECTION NUMBER AND SIZEOF UNDERDRAIN(S)PER ENGINEER’SDESIGN OUTLET CONTROL STRUCTURE(PER ENGINEER’S DESIGN/PROVIDED BY OTHERS) CONVEYANCE PIPE MATERIAL MAY VARY (PVC, HDPE, ETC.) INSERTA TEE CONNECTION PLACE ADS PLUS WOVEN GEOTEXTILE (CENTERED ON INSERTA-TEE INLET) OVER BEDDING STONE FOR SCOUR PROTECTION AT SIDE INLET CONNECTIONS, GEOTEXTILE MUST EXTEND 6” (150 mm) PAST CHAMBER FOOT MC-7200 18 5.0 Cumulative Storage Volumes Table 9 – MC-7200 Incremental Storage Volume Per ChamberAssumes 40% stone porosity. Calculations are based upon a 9” (230 mm) stone base under the chambers, 12” (300 mm) of stone above chambers, and 9” (230 mm) of spacing between chambers. Depth of Water in System Inches (mm) Cumulative Chamber Storage ft3 (m3) Total System Cumulative Storage ft3 (m3) 81 (2057)0.00 267.30 (7.569) 80 (2032)0.00 265.30 (7.512) 79 (2007)0.00 263.30 (7.456) 78 (1981)0.00 261.31 (7.399) 77 (1956)0.00 259.31 (7.343) 76 (1930)0.00 257.31 (7.286) 75 (1905)0.00 255.32 (7.230) 74 (1880)0.00 253.32 (7.173) 73 (1854)0.00 251.32 (7.117) 72 (1829)0.00 249.33 (7.060) 71 (1803)0.00 247.33 (7.004) 70 (1778)0.00 245.33 (6.947) 69 (1753)175.90 (4.981)243.33 (6.890) 68 (1727)175.84 (4.979)241.30 (6.833) 67 (1702)175.65 (4.974)239.19 (6.773) 66 (1676)175.38 (4.966)237.03 (6.712) 65 (1651)175.02 (4.956)234.82 (6.649) 64 (1626)174.56 (4.943)232.54 (6.585) 63 (1600)173.82 (4.922)230.10 (6.516) 62 (1575)172.72 (4.891)227.45 (6.441) 61 (1549)171.41 (4.854)224.66 (6.362) 60 (1524)169.91 (4.811)221.76 (6.280) 59 (1499)168.25 (4.764)218.77 (6.195) 58 (1473)166.46 (4.714)215.70 (6.108) 57 (1448)164.53 (4.659)212.55 (6.019) 56 (1422)162.50 (4.602)209.33 (5.928) 55 (1397)160.36 (4.541)206.05 (5.835) 54 (1372)158.11 (4.477)202.70 (5.740) 53 (1346)155.77 (4.411)199.30 (5.644) 52 (1321)153.33 (4.342)195.84 (5.546) 51 (1295)150.81 (4.271)192.33 (5.446) 50 (1270)148.21 (4.197)188.78 (5.346) 49 (1245)145.53 (4.121)185.17 (5.244) 48 (1219)142.78 (4.043)181.52 (5.140) 47 (1194)139.96 (3.963)177.83 (5.036) 46 (1168)137.07 (3.881)174.10 (4.930) 45 (1143)134.11 (3.798)170.33 (4.823) 44 (1118)131.09 (3.712)166.52 (4.715) 43 (1092)128.01 (3.625)162.68 (4.607) 42 (1067)124.88 (3.536)158.80 (4.497) 41 (1041)121.68 (3.446)154.89 (4.386) Depth of Water in System Inches (mm) Cumulative Chamber Storage ft3 (m3) Total System Cumulative Storage ft3 (m3) 40 (1016)118.44 (3.354)150.94 (4.274) 39 (991)115.14 (3.260)146.97 (4.162) 38 (965)111.80 (3.166)142.96 (4.048) 37 (948)108.40 (3.070)138.93 (3.934) 36 (914)104.97 (2.972)134.87 (3.819) 35 (889)101.48 (2.874)130.78 (3.703) 34 (864)97.96 (2.774)126.67 (3.587) 33 (838)94.39 (2.673)122.54 (3.470) 32 (813)90.79 (2.571)118.38 (3.352) 31 (787)87.14 (2.468)114.19 (3.234) 30 (762)83.46 (2.363)109.99 (3.114) 29 (737)79.75 (2.258)105.76 (2.995) 28 (711)76.00 (2.152)101.52 (2.875) 27 (686)72.22 (2.045)97.25 (2.754) 26 (680)68.41 (1.937)92.97 (2.632) 25 (610)64.56 (1.828)88.66 (2.511) 24 (609)60.69 (1.719)84.34 (2.388) 23 (584)56.80 (1.608)80.01 (2.266) 22 (559)52.87 (1.497)75.66 (2.142) 21 (533)48.92 (1.385)71.29 (2.019) 20 (508)44.95 (1.273)66.91 (1.895) 19 (483)40.96 (1.160)62.52 (1.770) 18 (457)36.94 (1.046)58.11 (1.646) 17 (432)32.91 (0.932)53.69 (1.520) 16 (406)28.85 (0.817)49.26 (1.395) 15 (381)24.78 (0.702)44.82 (1.269) 14 (356)20.69 (0.586)40.37 (1.143) 13 (330)16.58 (0.469)35.91 (1.017) 12 (305)12.46 (0.353)31.44 (0.890) 11 (279)8.32 (0.236)26.96 (0.763) 10 (254)4.17 (0.118)22.47 (0.636) 9 (229)0.00 17.97 (0.509) 8 (203)0.00 15.98 (0.452) 7 (178)0.00 13.98 (0.396) 6 (152)0.00 11.98 (0.339) 5 (127)0.00 9.99 (0.283) 4 (102)0.00 7.99 (0.226) 3 (76)0.00 5.99 (0.170) 2 (51)0.00 3.99 (0.113) 1 (25)0.00 2.00 (0.057) NOTE: Add 2.00 ft3 (0.057 m3) of storage for each additional inch (25 mm) of stone foundation. Contact StormTech for cumulative volume spreadsheets in digital format. Tables 9 and 10 provide cumulative storage volumes for the MC-7200 chamber and end cap. These tables can be used to calculate the stage-storage relationship for the retention or detention system. Digital spreadsheets in which the number of chambers and end caps can be input for quick cumulative storage calculations are available at www.stormtech.com. For assistance with site-specific calculations or input into routing software, contact the StormTech Technical Services Department. StoneCover StoneCover 19 5.0 Cumulative Storage Volumes Table 10 – MC-7200 Incremental Storage Volume Per End Cap Assumes 40% stone porosity. Calculations are based upon a 9” (230 mm) stone base under the chambers, 12” (300 mm) of stone above end caps, and 9” (230 mm) of spacing between end caps and 6” (150 mm) of stone perimeter. Depth of Water in System Inches (mm) Cumulative End Cap Storage ft3 (m3) Total System Cumulative Storage ft3 (m3) 81 (2057)0.00 115.28 (3.264) 80 (2032)0.00 114.15 (3.232) 79 (2007)0.00 113.02 (3.200) 78 (1981)0.00 111.89 (3.168) 77 (1956)0.00 110.76 (3.136) 76 (1930)0.00 109.63 (3.104) 75 (1905)0.00 108.50 (3.072) 74 (1880)0.00 107.37 (3.040) 73 (1854)0.00 106.24 (3.008) 72 (1829)0.00 105.11 (2.976) 71 (1803)0.00 103.98 (2.944) 70 (1778)0.00 102.85 (2.912) 69 (1753)39.54 (1.120)101.72 (2.880) 68 (1727)39.53 (1.119)100.58 (2.848) 67 (1702)39.50 (1.118)99.43 (2.816) 66 (1676)39.45 (1.117)98.27 (2.783) 65 (1651)39.38 (1.115)97.10 (2.750) 64 (1626)39.30 (1.113)95.92 (2.716) 63 (1600)39.19 (1.110)94.73 (2.682) 62 (1575)39.06 (1.106)93.52 (2.648) 61 (1549)38.90 (1.101)92.29 (2.613) 60 (1524)38.71 (1.096)91.04 (2.578) 59 (1499)38.49 (1.090)89.78 (2.542) 58 (1473)38.24 (1.083)88.50 (2.506) 57 (1448)37.97 (1.075)87.21 (2.469) 56 (1422)37.67 (1.067)85.90 (2.432) 55 (1397)37.34 (1.057)84.57 (2.395) 54 (1372)36.98 (1.047)83.23 (2.357) 53 (1346)36.60 (1.036)81.87 (2.318) 52 (1321)36.19 (1.025)80.49 (2.279) 51 (1295)35.75 (1.012)79.10 (2.240) 50 (1270)35.28 (0.999)77.69 (2.200) 49 (1245)34.79 (0.985)76.26 (2.159) 48 (1219)34.27 (0.970)74.82 (2.119) 47 (1194)33.72 (0.955)73.36 (2.077) 46 (1168)33.15 (0.939)71.89 (2.036) 45 (1143)32.57 (0.922)70.40 (1.994) 44 (1118)31.96 (0.905)68.91 (1.951) 43 (1092)31.32 (0.887)67.40 (1.909) 42 (1067)30.68 (0.869)65.88 (1.866) 41 (1041)30.00 (0.850)64.35 (1.822) Depth of Water in System Inches (mm) Cumulative End Cap Storage ft3 (m3) Total System Cumulative Storage ft3 (m3) 40 (1016)29.30 (0.830)62.80 (1.778) 39 (991)28.58 (0.809)61.23 (1.734) 38 (965)27.84 (0.788)59.65 (1.689) 37 (948)27.07 (0.767)58.07 (1.644) 36 (914)26.29 (0.744)56.46 (1.599) 35 (889)25.48 (0.722)54.85 (1.553) 34 (864)24.66 (0.698)53.23 (1.507) 33 (838)23.83 (0.675)51.60 (1.461) 32 (813)22.98 (0.651)49.96 (1.415) 31 (787)22.12 (0.626)48.31 (1.368) 30 (762)21.23 (0.601)46.65 (1.321) 29 (737)20.32 (0.575)44.97 (1.273) 28 (711)19.40 (0.549)43.29 (1.226) 27 (686)18.48 (0.523)41.61 (1.178) 26 (680)17.54 (0.497)39.91 (1.130) 25 (610)16.59 (0.470)38.21 (1.082) 24 (609)15.62 (0.442)36.50 (1.033) 23 (584)14.64 (0.414)34.78 (0.985) 22 (559)13.66 (0.387)33.07 (0.936) 21 (533)12.66 (0.359)31.33 (0.887) 20 (508)11.65 (0.330)29.60 (0.838) 19 (483)10.63 (0.301)27.85 (0.3789) 18 (457)9.60 (0.272)26.11 (0.739) 17 (432)8.56 (0.242)24.35 (0.690) 16 (406)7.51 (0.213)22.59 (0.640) 15 (381)6.46 (0.183)20.83 (0.590) 14 (356)5.41 (0.153)19.07 (0.540) 13 (330)4.35 (0.123)17.31 (0.490) 12 (305)3.28 (0.093)15.53 (0.440) 11 (279)2.19 (0.062)13.75 (0.389) 10 (254)1.11 (0.031)11.97 (0.339) 9 (229)0.00 10.17 (0.288) 8 (203)0.00 9.04 (0.256) 7 (178)0.00 7.91 (0.224) 6 (152)0.00 6.78 (0.192) 5 (127)0.00 5.65 (0.160) 4 (102)0.00 4.52 (0.128) 3 (76)0.00 3.39 (0.096) 2 (51)0.00 2.26 (0.064) 1 (25)0.00 1.13 (0.032) NOTE: Add 1.08 ft3 (0.031 m3) of storage for each additional inch (25 mm) of stone foundation. Contact StormTech for cumulative volume spreadsheets in digital format. StoneCover StoneCover 21 2) Determine the number of chambers (C) required. To calculate the number of chambers required for adequate storage, divide the storage volume (Vs) by the storage volume of the chamber (from Table 14), as follows: C = Vs / Storage Volume per Chamber 3) Determine the number of end caps required. The number of end caps (EC) required depends on the number of rows required by the project. Once the number of chamber rows is determined, multiply the number of chamber rows by 2 to determine the number of end caps required. EC = No. of Chamber Rows x 2 NOTE: Additional end caps may be required for systems having inlet locations within the chamber bed. 4) Determine additional storage provided by end caps. End Caps will provide additional storage to the project. Multiply the number of end caps (EC) by the storage volume per end cap (ECS) to determine the additional storage (As) provided by the end caps. As = EC x ECs 5) Adjust number of chambers (C) to account for additional end cap storage (As). The original number of chambers (C) can now be reduced due to the additional storage in the end caps. Divide the additional storage (As) by the storage volume per chamber to determine the number of chambers that can be removed. Number of chambers to remove = As/ volume per chamber NOTE: Additional storage exists in the stone perimeter as well as in the inlet and outlet manifold systems. Contact StormTech’s Technical Services Department for assistance with determining the number of chambers and end caps required for your project. 6) Determine the required bed size (S). The size of the bed will depend on the number of chambers and end caps required: MC-7200 area per chamber = 59.9 ft2 (5.6 m2) MC-7200 area per end cap = 33.9 ft2 (3.1 m2) S = (C x area per chamber) + (EC x area per end cap) NOTE: It is necessary to add 12” (300 mm) of stone perimeter parallel to the chamber rows and 6” (150 mm) of stone perimeter from the base of all end caps. The additional area due to perimeter stone is not included in the area numbers above. 7) Determine the amount of stone (Vst) required. To calculate the total amount of clean, crushed, angular stone required, multiply the number of chambers (C) and the number of end caps (EC) by the selected weight of stone from Table 15. NOTE: Clean, crushed, angular stone is also required around the perimeter of the system. 8) Determine the volume of excavation (Ex) required. Each additional foot of cover will add a volume of excavation of 2.2 yd3 (1.7 m3) per MC-7200 chamber and 1.4 yd3 (0.8 m3) per MC-7200 end cap. 9) Determine the area of geotextile (F) required. The bottom, top and sides of the bed must be covered with a non-woven geotextile (filter fabric) that meets AASHTO M288 Class 2 requirements. The area of the sidewalls must be calculated and a 24” (600 mm) overlap must be included for all seams. Geotextiles typically come in 15 foot (4.57 m) wide rolls. The following steps provide the calculations necessary for preliminary sizing of an MC-7200 chamber system. For custom bed configurations to fit specific sites, contact the StormTech Technical Services Department or your local StormTech representative. 1) Determine the amount of storage volume (VS) required. It is the design engineer’s sole responsibility to determine the storage volume required. 6.0 MC-7200 Chamber System Sizing Table 14 - Storage Volume Per Chamber/End Cap ft3 (m3) Bare Unit Storage ft3 (m3) Chamber/End Cap and Stone Volume — Stone Foundation Depth in. (mm) 9 (230)12 (300)15 (375)18 (450) MC-7200 Chamber 175.9 (4.98)267.3 (7.57)273.3 (7.74)279.3 (7.91)285.2 (8.08) MC-7200 End Cap 39.5 (1.12)115.3 (3.26)118.6 (3.36)121.9 (3.45)125.29 (3.54) NOTE: Assumes 9” (230 mm) row spacing, 40% stone porosity, 12” (300 mm) stone above and includes the bare chamber/end cap volume. End cap volume assumes 12” (300 mm) stone perimeter.Table 15 - Amount of Stone Per Chamber/End Cap ENGLISH tons (yd3) Stone Foundation Depth 9”12”15”18” Chamber 11.9 (8.5)12.6 (9.0)13.4 (9.6)14.6 (10.1) End Cap 9.8 (7.0)10.2 (7.3)10.6 (7.6)11.1 (7.9) METRIC kg (m3)230 mm 300 mm 375 mm 450 mm Chamber 10796 (6.5)11431 (6.9)12156 (7.3)13245 (7.7) End Cap 8890 (5.3)9253 (5.5)9616 (5.8)10069 (6.0) NOTE: Assumes 12” (300 mm) of stone above, and 9” (230 mm) row spacing, and 12” (300 mm) of perimeter stone in front of end caps. Table 13- Volume of Excavation Per Chamber/End Cap yd3 (m3) Stone Foundation Depth 9” (230 mm)12” (300 mm)15” (375 mm)18” (450 mm) Chamber 17.2 (13.2)17.7 (13.5)18.3 (14.0)18.8 (14.4) End Cap 9.7 (7.4)10.0 (7.6)10.3 (7.9)10.6 (8.1) NOTE: Assumes 9” (230 mm) separation between chamber rows, 12” (300 mm) of perimeter in front of end caps, and 24” (600 mm) of cover. The volume of excavation will vary as the depth of cover increases. Detail drawings available in Cad Rev. 2000 format at www.stormtech.com Special applications will be considered on a project by project basis. Please contact our application department should you have a unique application for our team to evaluate. 23 7.0 Structural Cross Sections and Specifications MC-7200 Stormwater Chamber Specifications 1. Chambers shall be StormTech MC-7200 or approved equal. 2. Chambers shall be made from virgin, impact- modified polypropylene copolymers. 3. Chamber rows shall provide continuous, unobstructed internal space with no internal panels that would impede flow. 4. The structural design of the chambers, the structural backfill and the installation requirements shall ensure that the load factors specified in the AASHTO LRFD Bridge Design Specifications, Section 12.12 are met for: 1) long- duration dead loads and 2) short-duration live loads, based on the AASHTO Design Truck with consideration for impact and multiple vehicle presences. 5. Chambers shall meet the requirements of ASTM F 2418, “Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers.” 6. Chambers shall conform to the requirements of ASTM F 2787, “Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers.” Figure 16B - MC-7200 Structural Cross Section Detail (Not to Scale) 7. Only chambers that are approved by the engineer will be allowed. The contractor shall submit (3 sets) of the following to the engineer for approval before delivering chambers to the project site: • A structural evaluation by a registered structural engineer that demonstrates that the load factors specified in the AASHTO LRFD Bridge Design Specifications, Section 12.12 are met. The 50-year creep modulus data specified in ASTM F 2418 must be used as part of the AASHTO structural evaluation to verify long-term performance. • Structural cross section detail on which the structural cross section is based. 8. The installation of chambers shall be in accordance with the manufacturer’s latest Construction Guide. 24 8.0 General Notes 1. StormTech requires installing contractors to use and understand the latest StormTech MC-3500 and MC-7200 Construction Guides prior to beginning system installation. 2. StormTech offers installation consultations to installing contractors. Contact our Technical Service Department or local StormTech representative at least 30 days prior to system installation to arrange a pre-installation consultation. Our representatives can then answer questions or address comments on the StormTech chamber system and inform the installing contractor of the minimum installation requirements before beginning the system’s construction. Call 860-529- 8188 to speak to a Technical Service Representative or visit www.stormtech.com to receive a copy of our Construction Guide. 3. StormTech requirements for systems with pavement design (asphalt, concrete pavers, etc.): Minimum cover is 18” (450mm) for the MC-3500 and 24”(600mm) for the MC-7200 not including pavement; MC-3500 maximum cover is 8.0’ (1.98 m) and MC-7200 maximum cover is 7.0’ (2.43 m) both including pavement. For designs with cover depths deeper than these maximums, please contact Stormtech. For installations that do not include pavement, where rutting from vehicles may occur, minimum required cover is increased to 30” (762 mm). 4. The contractor must report any discrepancies with the bearing capacity of the subgrade materials to the design engineer. 5. AASHTO M288 Class 2 non-woven geotextile (ADS601 or equal) (filter fabric) must be used as indicated in the project plans. 6. Stone placement between chamber rows and around perimeter must follow instructions as indicated in the most current version of StormTech MC-3500 / MC-7200 Construction Guides. 7. Backfilling over the chambers must follow require- ments as indicated in the most current version of StormTech MC-3500 / MC-7200 Construction Guides. 8. The contractor must refer to StormTech MC-3500 / MC-7200 Construction Guides for a Table of Acceptable Vehicle Loads at various depths of cover. This information is also available at the StormTech website: www.stormtech.com. The contractor is responsible for preventing vehicles that exceed StormTech requirements from traveling across or parking over the stormwater system. Temporary fencing, warning tape and appropriately located signs are commonly used to prevent unauthorized vehicles from entering sensitive construction areas. 9. The contractor must apply erosion and sediment control measures to protect the stormwater system during all phases of site construction per local codes and design engineer’s specifications. 10. STORMTECH PRODUCT WARRANTY IS LIMITED. Contact StormTech for warranty information. 25 9.0 Inspection and Maintenance Flamp (Flared End Ramp) A typical JetVac truck (This is not a StormTech product.) Examples of culvert cleaning nozzles appropriate for Isolator Row Plus maintenance. (These are not StormTech products). 9.1 Isolator Row Plus Inspection Regular inspection and maintenance are essential to assure a properly functioning stormwater system. Inspection is easily accomplished through the manhole or optional inspection ports of an Isolator Row Plus. Please follow local and OSHA rules for a confined space entry. Inspection ports can allow inspection to be accomplished completely from the surface without the need for a con- fined space entry. Inspection ports provide visual access to the system with the use of a flashlight. A stadia rod may be inserted to determine the depth of sediment. If upon visual inspection it is found that sediment has accumulated to an average depth exceeding 3” (76 mm), cleanout is required. A StormTech Isolator Row Plus should initially be inspected immediately after completion of the site’s construction. While every effort should be made to prevent sediment from entering the system during construction, it is during this time that excess amounts of sediments are most likely to enter any stormwater system. Inspection and maintenance, if necessary, should be performed prior to passing responsibility over to the site’s owner. Once in normal service, a StormTech Isolator Row Plus should be inspected bi-annually until an understanding of the sites characteristics is developed. The site’s maintenance manager can then revise the inspection schedule based on experience or local requirements. 9.2 Isolator Row Plus Maintenance JetVac maintenance is recommended if sediment has been collected to an average depth of 3” (76 mm) inside the Isolator Row Plus. More frequent maintenance may be required to maintain minimum flow rates through the Isolator Row Plus. The JetVac process utilizes a high pressure water nozzle to propel itself down the Isolator Row Plus while scouring and suspending sediments. As the nozzle is retrieved, a wave of suspended sediments is flushed back into the manhole for vacuuming. Most sewer and pipe maintenance companies have vacuum/ JetVac combi- nation vehicles. Fixed nozzles designed for culverts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45” (1143 mm) are best. StormTech recommends a maximum nozzle pressure of 2000 psi be utilized during cleaning. The JetVac process shall only be performed on StormTech Rows that have ADS Plus fabric over the foundation stone. A Flamp (flared end ramp) is attached to the inlet pipe on the inside of the chamber end cap to provide a smooth transition from pipe invert to fabric bottom. It is configured to improve chamber function performance over time by distributing sediment and debris that would otherwise collect at the inlet. It also serves to improve the fluid and solid flow back into the inlet pipe during maintenance and cleaning, and to guide cleaning and inspection equipment back into the inlet pipe when complete. ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.comAdvanced Drainage Systems, the ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc.StormTech® and the Isolator® Row PLUS are registered trademarks of StormTech, Inc. © 2022 Advanced Drainage Systems, Inc. #11116 3/22 CS StormTech provides state-of-the-art products and services that meet or exceed industry performance standards and expectations. We offer designers, regulators, owners and contractors the highest quality products and services for stormwater management that Saves Valuable Land and Protects Water Resources. A Family of Products and Services for the Stormwater Industry: adspipe.com 800-821-6710 MC-3500 and MC-7200 Chambers and End Caps SC-160LP, SC-310 and SC-740 Chambers & End Caps DC-780 Chambers and End Caps Fabricated End Caps Fabricated Manifold Fittings Patented Isolator Row PLUS for Maintenance and Water Quality Chamber Separation Spacers In-House System Layout Assistance On-Site Educational Seminars Worldwide Technical Sales Group Centralized Product Applications Department Research and Development Team Technical Literature, O&M Manuals and Detailed CAD drawings all downloadable via our Website MC-7200 MC-3500 DC-780 SC-740 SC-310 SC-160LP Required Materials and Equipment List Ǯऺ..0;?,-70ऺȑ77ऺ8,?0=4,7>ऺ;0=ऺ#,-70ऺழ Ǯऺ"ऺ$"ऺ,9/ऺ9:9ரB:A09ऺ20:?0C?470ऺ1,-=4.> Note: MC-7200 chamber pallets are 100” x 84” (2.5 m x 2.1 m) and weigh about 1435 lbs. (651 kg). Unloading chambers requires 72” (1.8 m) (min.) forks and/or tie downs (straps, chains, etc). Important Notes: றऺ#34>ऺ49>?,77,?4:9ऺ2@4/0ऺ;=:A4/0>ऺ?30ऺ84948@8ऺ=0<@4=0809?>ऺ1:=ऺ;=:;0=ऺ49>?,77,?4:9ऺ:1ऺ.3,8-0=>றऺ:9ர,/30=09.0ऺ?:ऺ?34>ऺ2@4/0ऺ8,Dऺ=0>@7?ऺ49ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ/@=492ऺ49>?,77,?4:9றऺ!0;7,.0809?ऺ:1ऺ/,8,20/ऺ.3,8-0=>ऺ/@=492ऺ:=ऺ,1?0=ऺ-,.6ȑ77492ऺ4>ऺ.:>?7Dऺ,9/ऺA0=Dऺ?480ऺ.:9>@8492றऺ?ऺ4>ऺ=0.:8809/0/ऺ?3,?ऺ,77ऺ49>?,770=>ऺ,=0ऺ1,8474,=ऺB4?3ऺ?34>ऺ2@4/0யऺ,9/ऺ?3,?ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?>ऺ?30ऺ.3,8-0=>ऺ1:=ऺ/4>?:=?4:9யऺ/,8,20ऺ,9/ऺ5:49?ऺ49?02=4?Dऺ,>ऺB:=6ऺ;=:2=0>>0>ற றऺ$>0ऺ:1ऺ,ऺ/:E0=ऺ?:ऺ;@>3ऺ08-0/809?ऺ>?:90ऺ-0?B009ऺ?30ऺ=:B>ऺ:1ऺ.3,8-0=>ऺ8,Dऺ.,@>0ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ,9/ऺ4>ऺ9:?ऺ,9ऺ,..0;?,-70ऺ-,.6ȑ77ऺ80?3:/றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ@>492ऺ?30ऺ௑/@8;ऺ,9/ऺ;@>3௒ऺ80?3:/ऺ,=0ऺ9:?ऺ.:A0=0/ऺ@9/0=ऺ?30ऺ"?:=8#0.3ऺ>?,9/,=/ऺB,==,9?Dற றऺ,=0ऺ>3:@7/ऺ-0ऺ?,609ऺ49ऺ?30ऺ3,9/7492ऺ:1ऺ.3,8-0=>ऺ,9/ऺ09/ऺ.,;>றऺ9/ऺ.,;>ऺ8@>?ऺ-0ऺ>?:=0/ऺ>?,9/492ऺ@;=423?றऺA:4/ऺ/=:;;492யऺ;=D492ऺ:=ऺ0C.0>>4A0ऺ1:=.0ऺ:9ऺ.3,8-0=>ऺ/@=492ऺ=08:A,7ऺ1=:8ऺ;,770?ऺ,9/ऺ494?4,7ऺ;7,.0809?ற Requirements for System Installation Ǯऺ"?:=8#0.3ऺ>:74/ऺ09/ऺ.,;>யऺ;=0ர.:=0/ऺ,9/ऺ;=0ர1,-=4.,?0/ऺ09/ऺ.,;>Ǯऺ"?:=8#0.3ऺ.3,8-0=>யऺ8,941:7/>ऺ,9/ऺȑ??492> C.,A,?0ऺ-0/ऺ,9/ऺ;=0;,=0ऺ>@-2=,/0ऺ;0= 0924900=ௐ>ऺ;7,9>றऺ7,9>ऺ,9/ऺ>;0.4ȑ.,?4:9>ऺ>3:@7/ऺ 49.7@/0ऺ0>?ऺ,9,20809?ऺ=,.?4.0>ऺ஫>஬ऺ ?:ऺ/0?0=ऺ.:9?,849,?4:9ऺ:1ऺ:;09ऺ;4?>ऺ/@=492ऺ .:9>?=@.?4:9ற 7,.0ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ;=0;,=0/ऺ>:47>ऺ ,9/ऺ@;ऺ0C.,A,?4:9ऺB,77>ற 7,.0ऺ.70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ऺ1:@9/,?4:9 ஼௒ऺ஫வஶளऺ88஬ऺ849றऺ9>?,77ऺ@9/0=/=,49>ऺ41ऺ=0<@4=0/றऺ :8;,.?ऺ?:ऺ,.340A0ऺ,ऺȒ,?ऺ>@=1,.0ற 1 "?:=8#0.3ऺ 9>?,77,?4:9ऺ%4/0: StormTech® Installation Guide MC-7200 Chamber 2 Manifold, Scour Fabric and Chamber Assembly Manifold Insertion StormTech Isolator Row Plus Detail 9>?,77ऺ8,941:7/>ऺ,9/ऺ7,Dऺ:@?ऺ"ऺ7@>ऺ1,-=4.ऺ,?ऺ4970?ऺ=:B>ऺ௃849றऺழ஺றஸऺ1?ऺ஫ஸறஶஶऺ8஬௅ऺ,?ऺ0,.3ऺ4970?ऺ09/ऺ.,;றऺ7,.0ऺ,ऺ.:9?49@:@>ऺ;40.0ऺ஫9:ऺ>0,8>஬ऺ,7:92ऺ09?4=0ऺ7092?3ऺ:1ऺ>:7,?:=®ऺ7@>ऺ!:B஫>஬ற7429ऺ?30ऺȑ=>?ऺ.3,8-0=ऺ,9/ऺ09/ऺ.,;ऺ:1ऺ0,.3ऺ=:BऺB4?3ऺ4970?ऺ;4;0>றऺ:9?=,.?:=ऺ8,Dऺ.3::>0ऺ?:ऺ;:>?;:90ऺ>?:90ऺ;7,.0809?ऺ,=:@9/ऺ09/ऺ.3,8-0=>ऺ,9/ऺ70,A0ऺ09/>ऺ:1ऺ=:B>ऺ:;09ऺ1:=ऺ0,>Dऺ49>;0.?4:9ऺ:1ऺ.3,8-0=>ऺ/@=492ऺ?30ऺ-,.6ȑ77ऺ;=:.0>>ற 9>0=?ऺ4970?ऺ,9/ऺ:@?70?ऺ8,941:7/>ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ49?:ऺ.3,8-0=ऺ09/ऺ.,;>றऺ,941:7/ऺ30,/0=ऺ>3:@7/ऺ-0ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ1=:8ऺ-,>0ऺ:1ऺ09/ऺ.,;ற #30ऺர஺வளளऺ.:9?,49>ऺ-@47?ऺ49ऺ=:;0>ऺ,?ऺ?30ऺ100?ऺ:9ऺ-:?3ऺ>4/0>ऺ:1ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ@>0/ऺ?:ऺ741?ऺ,9/ऺ;7,.0ऺ?30ऺ.3,8-0=>ऺ@>492ऺ,9ऺ0C.,A,?:=றऺ:ऺ8:=0ऺ?3,9ऺ?B:ऺ.3,8-0=>ऺ>3:@7/ऺ-0ऺ741?0/ऺ,?ऺ,ऺ?480ऺ@>492ऺ?30ऺ=:;0>றऺऺழஷௐऺCऺஶல஻௒ऺ஫ழளऺ88஬ऺ.3,49ऺ4>ऺ=0.:8809/0/ऺ,7:92ऺB4?3ऺ,ऺஸல஻௒ऺ஫ழஹऺ88஬ऺ,Bऺ,9/ऺD0ऺ"B4A07றऺऺ$>492ऺ?34>ऺ80?3:/யऺ.3,8-0=>ऺ.,9ऺ-0ऺ;7,.0/ऺ/4=0.?7Dऺ:9ऺ,9ऺ0C4>?492ऺ=:Bறऺऺ$>492ऺ?::ऺ7:92ऺ:1ऺ,ऺ.3,49ऺ8,Dऺ.,@>0ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ70>>ऺ>?,-70ऺ/@=492ऺ;4.6492ற 7,.0ऺ,ऺ.:9?49@:@>ऺ7,D0=ऺ:1ऺ"ऺ7@>ऺ1,-=4.ऺ-0?B009ऺ?30ऺ1:@9/,?4:9ऺ>?:90ऺ,9/ऺ?30ऺ>:7,?:=ऺ!:Bऺ7@>ऺ.3,8-0=>யऺ8,6492ऺ>@=0ऺ?30ऺ1,-=4.ऺ7,D>ऺȒ,?ऺ,9/ऺ0C?09/>ऺ?30ऺ09?4=0ऺB4/?3ऺ:1ऺ?30ऺ.3,8-0=ऺ100?றऺ&309ऺ@>0/ऺ:9ऺ,9ऺ>:7,?:=ऺ!:Bऺ7@>யऺ,ऺவஷ௒ऺऺ஫Ȓ,=0/ऺ09/ऺ=,8;஬ऺ4>ऺ,??,.30/ऺ?:ऺ?30ऺ49>4/0ऺ:1ऺ?30ऺ4970?ऺ;4;0ऺB4?3ऺ,ऺ;=:A4/0/ऺ?3=0,/0/ऺ=:/ऺ,9/ऺ-:7?றऺ#30ऺऺ?309ऺ7,D>ऺ:9ऺ?:;ऺ:1ऺ?30ऺ"ऺ7@>ऺ1,-=4.ற :9?49@0ऺ49>?,77492ऺ.3,8-0=>ऺ-Dऺ:A0=7,;;492ऺ.3,8-0=ऺ09/ऺ.:==@2,?4:9>றऺ3,8-0=ऺ5:49?>ऺ,=0ऺ7,-070/ऺ௑:B0=ऺ:49?ऺ்ऺA0=7,;ऺ0=0௒ऺ,9/ऺ௑@47/ऺ?34>ऺ/4=0.?4:9ऺ்ऺ$;;0=ऺ:49?௒ऺ0ऺ>@=0ऺ?3,?ऺ?30ऺ.3,8-0=ऺ;7,.0809?ऺ/:0>ऺ9:?ऺ0C.00/ऺ?30ऺ=0,.3ऺ:1ऺ?30ऺ.:9>?=@.?4:9ऺ0<@4;809?ऺ@>0/ऺ?:ऺ;7,.0ऺ?30ऺ>?:90றऺऺ,49?,49ऺ84948@8ऺ஼௒ऺ஫வஶளऺ88஬ऺ>;,.492ऺ-0?B009ऺர஺வளளऺ=:B>ற Initial Anchoring of Chambers – Embedment Stone 94?4,7ऺ08-0/809?ऺ>3,77ऺ-0ऺ>;:??0/ऺ,7:92ऺ?30ऺ.09?0=7490ऺ:1ऺ?30ऺ.3,8-0=ऺ0A097Dऺ,9.3:=492ऺ?30ऺ7:B0=ऺ;:=?4:9ऺ:1ऺ?30ऺ.3,8-0=றऺ#34>ऺ4>ऺ-0>?ऺ,..:8;74>30/ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:=ऺ0C.,A,?:=ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:Bற :ऺ0<@4;809?ऺ>3,77ऺ-0ऺ:;0=,?0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ>?,20ऺ:1ऺ?30ऺ49>?,77,?4:9றऺC.,A,?:=>ऺ8@>?ऺ-0ऺ7:.,?0/ऺ:11ऺ?30ऺ-0/றऺ@8;ऺ?=@.6>ऺ>3,77ऺ9:?ऺ/@8;ऺ>?:90ऺ/4=0.?7Dऺ:9ऺ?:ऺ?30ऺ-0/றऺ:E0=>ऺ:=ऺ7:,/0=>ऺ,=0ऺ9:?ऺ,77:B0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ?480ற Backﬁll of Chambers – Embedment Stone Uneven Backfill %DFNÛOOFKDPEHUVHYHQO\6WRQHFROXPQKHLJKWVKRXOGQHYHUGLIIHUE\PRUHWKDQ rPPEHWZHHQDGMDFHQWFKDPEHUURZVRUEHWZHHQFKDPEHUURZVDQG SHULPHWHU Even Backfill 3HULPHWHUVWRQHPXVWEHEURXJKWXSHYHQO\ZLWKFKDPEHUURZV3HULPHWHUPXVWEH IXOO\EDFNÛOOHGZLWKVWRQHH[WHQGHGKRUL]RQWDOO\WRWKHH[FDYDWLRQZDOO Perimeter Not Backfilled Perimeter Fully Backfilled 3 12" (300 mm)MAX. Required Materials and Equipment ListǮऺ..0;?,-70ऺȑ77ऺ8,?0=4,7>ऺ;0=ऺ#,-70ऺழǮऺ"ऺ$"ऺ,9/ऺ9:9ரB:A09ऺ20:?0C?470ऺ1,-=4.>Note: MC-7200 chamber pallets are 100” x 84” (2.5 m x 2.1 m) and weigh about 1435 lbs. (651 kg). Unloading chambers requires 72” (1.8 m) (min.) forks and/or tie downs (straps, chains, etc).Important Notes:றऺ#34>ऺ49>?,77,?4:9ऺ2@4/0ऺ;=:A4/0>ऺ?30ऺ84948@8ऺ=0<@4=0809?>ऺ1:=ऺ;=:;0=ऺ49>?,77,?4:9ऺ:1ऺ.3,8-0=>றऺ:9ர,/30=09.0ऺ?:ऺ?34>ऺ2@4/0ऺ8,Dऺ=0>@7?ऺ49ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ/@=492ऺ49>?,77,?4:9றऺ!0;7,.0809?ऺ:1ऺ/,8,20/ऺ.3,8-0=>ऺ/@=492ऺ:=ऺ,1?0=ऺ-,.6ȑ77492ऺ4>ऺ.:>?7Dऺ,9/ऺA0=Dऺ?480ऺ.:9>@8492றऺ?ऺ4>ऺ=0.:8809/0/ऺ?3,?ऺ,77ऺ49>?,770=>ऺ,=0ऺ1,8474,=ऺB4?3ऺ?34>ऺ2@4/0யऺ,9/ऺ?3,?ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?>ऺ?30ऺ.3,8-0=>ऺ1:=ऺ/4>?:=?4:9யऺ/,8,20ऺ,9/ऺ5:49?ऺ49?02=4?Dऺ,>ऺB:=6ऺ;=:2=0>>0>றறऺ$>0ऺ:1ऺ,ऺ/:E0=ऺ?:ऺ;@>3ऺ08-0/809?ऺ>?:90ऺ-0?B009ऺ?30ऺ=:B>ऺ:1ऺ.3,8-0=>ऺ8,Dऺ.,@>0ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ,9/ऺ4>ऺ9:?ऺ,9ऺ,..0;?,-70ऺ-,.6ȑ77ऺ80?3:/றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ@>492ऺ?30ऺ௑/@8;ऺ,9/ऺ;@>3௒ऺ80?3:/ऺ,=0ऺ9:?ऺ.:A0=0/ऺ@9/0=ऺ?30ऺ"?:=8#0.3ऺ>?,9/,=/ऺB,==,9?Dறறऺ,=0ऺ>3:@7/ऺ-0ऺ?,609ऺ49ऺ?30ऺ3,9/7492ऺ:1ऺ.3,8-0=>ऺ,9/ऺ09/ऺ.,;>றऺ9/ऺ.,;>ऺ8@>?ऺ-0ऺ>?:=0/ऺ>?,9/492ऺ@;=423?றऺA:4/ऺ/=:;;492யऺ;=D492ऺ:=ऺ0C.0>>4A0ऺ1:=.0ऺ:9ऺ.3,8-0=>ऺ/@=492ऺ=08:A,7ऺ1=:8ऺ;,770?ऺ,9/ऺ494?4,7ऺ;7,.0809?றRequirements for System InstallationǮऺ"?:=8#0.3ऺ>:74/ऺ09/ऺ.,;>யऺ;=0ர.:=0/ऺ,9/ऺ;=0ர1,-=4.,?0/ऺ09/ऺ.,;>Ǯऺ"?:=8#0.3ऺ.3,8-0=>யऺ8,941:7/>ऺ,9/ऺȑ??492>C.,A,?0ऺ-0/ऺ,9/ऺ;=0;,=0ऺ>@-2=,/0ऺ;0=0924900=ௐ>ऺ;7,9>றऺ7,9>ऺ,9/ऺ>;0.4ȑ.,?4:9>ऺ>3:@7/ऺ49.7@/0ऺ0>?ऺ,9,20809?ऺ=,.?4.0>ऺ஫>஬ऺ?:ऺ/0?0=ऺ.:9?,849,?4:9ऺ:1ऺ:;09ऺ;4?>ऺ/@=492ऺ.:9>?=@.?4:9ற 7,.0ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ;=0;,=0/ऺ>:47>ऺ,9/ऺ@;ऺ0C.,A,?4:9ऺB,77>ற 7,.0ऺ.70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ऺ1:@9/,?4:9஼௒ऺ஫வஶளऺ88஬ऺ849றऺ9>?,77ऺ@9/0=/=,49>ऺ41ऺ=0<@4=0/றऺ:8;,.?ऺ?:ऺ,.340A0ऺ,ऺȒ,?ऺ>@=1,.0ற 1"?:=8#0.3ऺ 9>?,77,?4:9ऺ%4/0:StormTech® Installation Guide MC-7200 Chamber 2 Manifold, Scour Fabric and Chamber Assembly Manifold Insertion StormTech Isolator Row Plus Detail 9>?,77ऺ8,941:7/>ऺ,9/ऺ7,Dऺ:@?ऺ"ऺ7@>ऺ1,-=4.ऺ,?ऺ4970?ऺ=:B>ऺ௃849றऺழ஺றஸऺ1?ऺ஫ஸறஶஶऺ8஬௅ऺ,?ऺ0,.3ऺ4970?ऺ09/ऺ.,;றऺ7,.0ऺ,ऺ.:9?49@:@>ऺ;40.0ऺ஫9:ऺ>0,8>஬ऺ,7:92ऺ09?4=0ऺ7092?3ऺ:1ऺ>:7,?:=®ऺ7@>ऺ!:B஫>஬ற7429ऺ?30ऺȑ=>?ऺ.3,8-0=ऺ,9/ऺ09/ऺ.,;ऺ:1ऺ0,.3ऺ=:BऺB4?3ऺ4970?ऺ;4;0>றऺ:9?=,.?:=ऺ8,Dऺ.3::>0ऺ?:ऺ;:>?;:90ऺ>?:90ऺ;7,.0809?ऺ,=:@9/ऺ09/ऺ.3,8-0=>ऺ,9/ऺ70,A0ऺ09/>ऺ:1ऺ=:B>ऺ:;09ऺ1:=ऺ0,>Dऺ49>;0.?4:9ऺ:1ऺ.3,8-0=>ऺ/@=492ऺ?30ऺ-,.6ȑ77ऺ;=:.0>>ற 9>0=?ऺ4970?ऺ,9/ऺ:@?70?ऺ8,941:7/>ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ49?:ऺ.3,8-0=ऺ09/ऺ.,;>றऺ,941:7/ऺ30,/0=ऺ>3:@7/ऺ-0ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ1=:8ऺ-,>0ऺ:1ऺ09/ऺ.,;ற #30ऺர஺வளளऺ.:9?,49>ऺ-@47?ऺ49ऺ=:;0>ऺ,?ऺ?30ऺ100?ऺ:9ऺ-:?3ऺ>4/0>ऺ:1ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ@>0/ऺ?:ऺ741?ऺ,9/ऺ;7,.0ऺ?30ऺ.3,8-0=>ऺ@>492ऺ,9ऺ0C.,A,?:=றऺ:ऺ8:=0ऺ?3,9ऺ?B:ऺ.3,8-0=>ऺ>3:@7/ऺ-0ऺ741?0/ऺ,?ऺ,ऺ?480ऺ@>492ऺ?30ऺ=:;0>றऺऺழஷௐऺCऺஶல஻௒ऺ஫ழளऺ88஬ऺ.3,49ऺ4>ऺ=0.:8809/0/ऺ,7:92ऺB4?3ऺ,ऺஸல஻௒ऺ஫ழஹऺ88஬ऺ,Bऺ,9/ऺD0ऺ"B4A07றऺऺ$>492ऺ?34>ऺ80?3:/யऺ.3,8-0=>ऺ.,9ऺ-0ऺ;7,.0/ऺ/4=0.?7Dऺ:9ऺ,9ऺ0C4>?492ऺ=:Bறऺऺ$>492ऺ?::ऺ7:92ऺ:1ऺ,ऺ.3,49ऺ8,Dऺ.,@>0ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ70>>ऺ>?,-70ऺ/@=492ऺ;4.6492ற 7,.0ऺ,ऺ.:9?49@:@>ऺ7,D0=ऺ:1ऺ"ऺ7@>ऺ1,-=4.ऺ-0?B009ऺ?30ऺ1:@9/,?4:9ऺ>?:90ऺ,9/ऺ?30ऺ>:7,?:=ऺ!:Bऺ7@>ऺ.3,8-0=>யऺ8,6492ऺ>@=0ऺ?30ऺ1,-=4.ऺ7,D>ऺȒ,?ऺ,9/ऺ0C?09/>ऺ?30ऺ09?4=0ऺB4/?3ऺ:1ऺ?30ऺ.3,8-0=ऺ100?றऺ&309ऺ@>0/ऺ:9ऺ,9ऺ>:7,?:=ऺ!:Bऺ7@>யऺ,ऺவஷ௒ऺऺ஫Ȓ,=0/ऺ09/ऺ=,8;஬ऺ4>ऺ,??,.30/ऺ?:ऺ?30ऺ49>4/0ऺ:1ऺ?30ऺ4970?ऺ;4;0ऺB4?3ऺ,ऺ;=:A4/0/ऺ?3=0,/0/ऺ=:/ऺ,9/ऺ-:7?றऺ#30ऺऺ?309ऺ7,D>ऺ:9ऺ?:;ऺ:1ऺ?30ऺ"ऺ7@>ऺ1,-=4.ற :9?49@0ऺ49>?,77492ऺ.3,8-0=>ऺ-Dऺ:A0=7,;;492ऺ.3,8-0=ऺ09/ऺ.:==@2,?4:9>றऺ3,8-0=ऺ5:49?>ऺ,=0ऺ7,-070/ऺ௑:B0=ऺ:49?ऺ்ऺA0=7,;ऺ0=0௒ऺ,9/ऺ௑@47/ऺ?34>ऺ/4=0.?4:9ऺ்ऺ$;;0=ऺ:49?௒ऺ0ऺ>@=0ऺ?3,?ऺ?30ऺ.3,8-0=ऺ;7,.0809?ऺ/:0>ऺ9:?ऺ0C.00/ऺ?30ऺ=0,.3ऺ:1ऺ?30ऺ.:9>?=@.?4:9ऺ0<@4;809?ऺ@>0/ऺ?:ऺ;7,.0ऺ?30ऺ>?:90றऺऺ,49?,49ऺ84948@8ऺ஼௒ऺ஫வஶளऺ88஬ऺ>;,.492ऺ-0?B009ऺர஺வளளऺ=:B>ற Initial Anchoring of Chambers – Embedment Stone 94?4,7ऺ08-0/809?ऺ>3,77ऺ-0ऺ>;:??0/ऺ,7:92ऺ?30ऺ.09?0=7490ऺ:1ऺ?30ऺ.3,8-0=ऺ0A097Dऺ,9.3:=492ऺ?30ऺ7:B0=ऺ;:=?4:9ऺ:1ऺ?30ऺ.3,8-0=றऺ#34>ऺ4>ऺ-0>?ऺ,..:8;74>30/ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:=ऺ0C.,A,?:=ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:Bற :ऺ0<@4;809?ऺ>3,77ऺ-0ऺ:;0=,?0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ>?,20ऺ:1ऺ?30ऺ49>?,77,?4:9றऺC.,A,?:=>ऺ8@>?ऺ-0ऺ7:.,?0/ऺ:11ऺ?30ऺ-0/றऺ@8;ऺ?=@.6>ऺ>3,77ऺ9:?ऺ/@8;ऺ>?:90ऺ/4=0.?7Dऺ:9ऺ?:ऺ?30ऺ-0/றऺ:E0=>ऺ:=ऺ7:,/0=>ऺ,=0ऺ9:?ऺ,77:B0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ?480ற Backﬁll of Chambers – Embedment Stone Uneven Backfill %DFNÛOOFKDPEHUVHYHQO\6WRQHFROXPQKHLJKWVKRXOGQHYHUGLIIHUE\PRUHWKDQ rPPEHWZHHQDGMDFHQWFKDPEHUURZVRUEHWZHHQFKDPEHUURZVDQG SHULPHWHU Even Backfill 3HULPHWHUVWRQHPXVWEHEURXJKWXSHYHQO\ZLWKFKDPEHUURZV3HULPHWHUPXVWEH IXOO\EDFNÛOOHGZLWKVWRQHH[WHQGHGKRUL]RQWDOO\WRWKHH[FDYDWLRQZDOO Perimeter Not Backfilled Perimeter Fully Backfilled 3 12" (300 mm)MAX. Required Materials and Equipment ListǮऺ..0;?,-70ऺȑ77ऺ8,?0=4,7>ऺ;0=ऺ#,-70ऺழǮऺ"ऺ$"ऺ,9/ऺ9:9ரB:A09ऺ20:?0C?470ऺ1,-=4.>Note: MC-7200 chamber pallets are 100” x 84” (2.5 m x 2.1 m) and weigh about 1435 lbs. (651 kg). Unloading chambers requires 72” (1.8 m) (min.) forks and/or tie downs (straps, chains, etc).Important Notes:றऺ#34>ऺ49>?,77,?4:9ऺ2@4/0ऺ;=:A4/0>ऺ?30ऺ84948@8ऺ=0<@4=0809?>ऺ1:=ऺ;=:;0=ऺ49>?,77,?4:9ऺ:1ऺ.3,8-0=>றऺ:9ர,/30=09.0ऺ?:ऺ?34>ऺ2@4/0ऺ8,Dऺ=0>@7?ऺ49ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ/@=492ऺ49>?,77,?4:9றऺ!0;7,.0809?ऺ:1ऺ/,8,20/ऺ.3,8-0=>ऺ/@=492ऺ:=ऺ,1?0=ऺ-,.6ȑ77492ऺ4>ऺ.:>?7Dऺ,9/ऺA0=Dऺ?480ऺ.:9>@8492றऺ?ऺ4>ऺ=0.:8809/0/ऺ?3,?ऺ,77ऺ49>?,770=>ऺ,=0ऺ1,8474,=ऺB4?3ऺ?34>ऺ2@4/0யऺ,9/ऺ?3,?ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?>ऺ?30ऺ.3,8-0=>ऺ1:=ऺ/4>?:=?4:9யऺ/,8,20ऺ,9/ऺ5:49?ऺ49?02=4?Dऺ,>ऺB:=6ऺ;=:2=0>>0>றறऺ$>0ऺ:1ऺ,ऺ/:E0=ऺ?:ऺ;@>3ऺ08-0/809?ऺ>?:90ऺ-0?B009ऺ?30ऺ=:B>ऺ:1ऺ.3,8-0=>ऺ8,Dऺ.,@>0ऺ/,8,20ऺ?:ऺ.3,8-0=>ऺ,9/ऺ4>ऺ9:?ऺ,9ऺ,..0;?,-70ऺ-,.6ȑ77ऺ80?3:/றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ@>492ऺ?30ऺ௑/@8;ऺ,9/ऺ;@>3௒ऺ80?3:/ऺ,=0ऺ9:?ऺ.:A0=0/ऺ@9/0=ऺ?30ऺ"?:=8#0.3ऺ>?,9/,=/ऺB,==,9?Dறறऺ,=0ऺ>3:@7/ऺ-0ऺ?,609ऺ49ऺ?30ऺ3,9/7492ऺ:1ऺ.3,8-0=>ऺ,9/ऺ09/ऺ.,;>றऺ9/ऺ.,;>ऺ8@>?ऺ-0ऺ>?:=0/ऺ>?,9/492ऺ@;=423?றऺA:4/ऺ/=:;;492யऺ;=D492ऺ:=ऺ0C.0>>4A0ऺ1:=.0ऺ:9ऺ.3,8-0=>ऺ/@=492ऺ=08:A,7ऺ1=:8ऺ;,770?ऺ,9/ऺ494?4,7ऺ;7,.0809?றRequirements for System InstallationǮऺ"?:=8#0.3ऺ>:74/ऺ09/ऺ.,;>யऺ;=0ர.:=0/ऺ,9/ऺ;=0ர1,-=4.,?0/ऺ09/ऺ.,;>Ǯऺ"?:=8#0.3ऺ.3,8-0=>யऺ8,941:7/>ऺ,9/ऺȑ??492>C.,A,?0ऺ-0/ऺ,9/ऺ;=0;,=0ऺ>@-2=,/0ऺ;0=0924900=ௐ>ऺ;7,9>றऺ7,9>ऺ,9/ऺ>;0.4ȑ.,?4:9>ऺ>3:@7/ऺ49.7@/0ऺ0>?ऺ,9,20809?ऺ=,.?4.0>ऺ஫>஬ऺ?:ऺ/0?0=ऺ.:9?,849,?4:9ऺ:1ऺ:;09ऺ;4?>ऺ/@=492ऺ.:9>?=@.?4:9ற 7,.0ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ;=0;,=0/ऺ>:47>ऺ,9/ऺ@;ऺ0C.,A,?4:9ऺB,77>ற 7,.0ऺ.70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ऺ1:@9/,?4:9஼௒ऺ஫வஶளऺ88஬ऺ849றऺ9>?,77ऺ@9/0=/=,49>ऺ41ऺ=0<@4=0/றऺ:8;,.?ऺ?:ऺ,.340A0ऺ,ऺȒ,?ऺ>@=1,.0ற 1"?:=8#0.3ऺ 9>?,77,?4:9ऺ%4/0:StormTech® Installation Guide MC-7200 Chamber 2Manifold, Scour Fabric and Chamber AssemblyManifold Insertion StormTech Isolator Row Plus Detail9>?,77ऺ8,941:7/>ऺ,9/ऺ7,Dऺ:@?ऺ"ऺ7@>ऺ1,-=4.ऺ,?ऺ4970?ऺ=:B>ऺ௃849றऺழ஺றஸऺ1?ऺ஫ஸறஶஶऺ8஬௅ऺ,?ऺ0,.3ऺ4970?ऺ09/ऺ.,;றऺ7,.0ऺ,ऺ.:9?49@:@>ऺ;40.0ऺ஫9:ऺ>0,8>஬ऺ,7:92ऺ09?4=0ऺ7092?3ऺ:1ऺ>:7,?:=®ऺ7@>ऺ!:B஫>஬ற7429ऺ?30ऺȑ=>?ऺ.3,8-0=ऺ,9/ऺ09/ऺ.,;ऺ:1ऺ0,.3ऺ=:BऺB4?3ऺ4970?ऺ;4;0>றऺ:9?=,.?:=ऺ8,Dऺ.3::>0ऺ?:ऺ;:>?;:90ऺ>?:90ऺ;7,.0809?ऺ,=:@9/ऺ09/ऺ.3,8-0=>ऺ,9/ऺ70,A0ऺ09/>ऺ:1ऺ=:B>ऺ:;09ऺ1:=ऺ0,>Dऺ49>;0.?4:9ऺ:1ऺ.3,8-0=>ऺ/@=492ऺ?30ऺ-,.6ȑ77ऺ;=:.0>>ற9>0=?ऺ4970?ऺ,9/ऺ:@?70?ऺ8,941:7/>ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ49?:ऺ.3,8-0=ऺ09/ऺ.,;>றऺ,941:7/ऺ30,/0=ऺ>3:@7/ऺ-0ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ1=:8ऺ-,>0ऺ:1ऺ09/ऺ.,;ற #30ऺர஺வளளऺ.:9?,49>ऺ-@47?ऺ49ऺ=:;0>ऺ,?ऺ?30ऺ100?ऺ:9ऺ-:?3ऺ>4/0>ऺ:1ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ@>0/ऺ?:ऺ741?ऺ,9/ऺ;7,.0ऺ?30ऺ.3,8-0=>ऺ@>492ऺ,9ऺ0C.,A,?:=றऺ:ऺ8:=0ऺ?3,9ऺ?B:ऺ.3,8-0=>ऺ>3:@7/ऺ-0ऺ741?0/ऺ,?ऺ,ऺ?480ऺ@>492ऺ?30ऺ=:;0>றऺऺழஷௐऺCऺஶல஻௒ऺ஫ழளऺ88஬ऺ.3,49ऺ4>ऺ=0.:8809/0/ऺ,7:92ऺB4?3ऺ,ऺஸல஻௒ऺ஫ழஹऺ88஬ऺ,Bऺ,9/ऺD0ऺ"B4A07றऺऺ$>492ऺ?34>ऺ80?3:/யऺ.3,8-0=>ऺ.,9ऺ-0ऺ;7,.0/ऺ/4=0.?7Dऺ:9ऺ,9ऺ0C4>?492ऺ=:Bறऺऺ$>492ऺ?::ऺ7:92ऺ:1ऺ,ऺ.3,49ऺ8,Dऺ.,@>0ऺ?30ऺ.3,8-0=>ऺ?:ऺ-0ऺ70>>ऺ>?,-70ऺ/@=492ऺ;4.6492ற 7,.0ऺ,ऺ.:9?49@:@>ऺ7,D0=ऺ:1ऺ"ऺ7@>ऺ1,-=4.ऺ-0?B009ऺ?30ऺ1:@9/,?4:9ऺ>?:90ऺ,9/ऺ?30ऺ>:7,?:=ऺ!:Bऺ7@>ऺ.3,8-0=>யऺ8,6492ऺ>@=0ऺ?30ऺ1,-=4.ऺ7,D>ऺȒ,?ऺ,9/ऺ0C?09/>ऺ?30ऺ09?4=0ऺB4/?3ऺ:1ऺ?30ऺ.3,8-0=ऺ100?றऺ&309ऺ@>0/ऺ:9ऺ,9ऺ>:7,?:=ऺ!:Bऺ7@>யऺ,ऺவஷ௒ऺऺ஫Ȓ,=0/ऺ09/ऺ=,8;஬ऺ4>ऺ,??,.30/ऺ?:ऺ?30ऺ49>4/0ऺ:1ऺ?30ऺ4970?ऺ;4;0ऺB4?3ऺ,ऺ;=:A4/0/ऺ?3=0,/0/ऺ=:/ऺ,9/ऺ-:7?றऺ#30ऺऺ?309ऺ7,D>ऺ:9ऺ?:;ऺ:1ऺ?30ऺ"ऺ7@>ऺ1,-=4.ற:9?49@0ऺ49>?,77492ऺ.3,8-0=>ऺ-Dऺ:A0=7,;;492ऺ.3,8-0=ऺ09/ऺ.:==@2,?4:9>றऺ3,8-0=ऺ5:49?>ऺ,=0ऺ7,-070/ऺ௑:B0=ऺ:49?ऺ்ऺA0=7,;ऺ0=0௒ऺ,9/ऺ௑@47/ऺ?34>ऺ/4=0.?4:9ऺ்ऺ$;;0=ऺ:49?௒ऺ0ऺ>@=0ऺ?3,?ऺ?30ऺ.3,8-0=ऺ;7,.0809?ऺ/:0>ऺ9:?ऺ0C.00/ऺ?30ऺ=0,.3ऺ:1ऺ?30ऺ.:9>?=@.?4:9ऺ0<@4;809?ऺ@>0/ऺ?:ऺ;7,.0ऺ?30ऺ>?:90றऺऺ,49?,49ऺ84948@8ऺ஼௒ऺ஫வஶளऺ88஬ऺ>;,.492ऺ-0?B009ऺர஺வளளऺ=:B>ற Initial Anchoring of Chambers – Embedment Stone 94?4,7ऺ08-0/809?ऺ>3,77ऺ-0ऺ>;:??0/ऺ,7:92ऺ?30ऺ.09?0=7490ऺ:1ऺ?30ऺ.3,8-0=ऺ0A097Dऺ,9.3:=492ऺ?30ऺ7:B0=ऺ;:=?4:9ऺ:1ऺ?30ऺ.3,8-0=றऺ#34>ऺ4>ऺ-0>?ऺ,..:8;74>30/ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:=ऺ0C.,A,?:=ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:Bற :ऺ0<@4;809?ऺ>3,77ऺ-0ऺ:;0=,?0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ>?,20ऺ:1ऺ?30ऺ49>?,77,?4:9றऺC.,A,?:=>ऺ8@>?ऺ-0ऺ7:.,?0/ऺ:11ऺ?30ऺ-0/றऺ@8;ऺ?=@.6>ऺ>3,77ऺ9:?ऺ/@8;ऺ>?:90ऺ/4=0.?7Dऺ:9ऺ?:ऺ?30ऺ-0/றऺ:E0=>ऺ:=ऺ7:,/0=>ऺ,=0ऺ9:?ऺ,77:B0/ऺ:9ऺ?30ऺ-0/ऺ,?ऺ?34>ऺ?480ற Backﬁll of Chambers – Embedment Stone Uneven Backfill %DFNÛOOFKDPEHUVHYHQO\6WRQHFROXPQKHLJKWVKRXOGQHYHUGLIIHUE\PRUHWKDQ rPPEHWZHHQDGMDFHQWFKDPEHUURZVRUEHWZHHQFKDPEHUURZVDQG SHULPHWHU Even Backfill 3HULPHWHUVWRQHPXVWEHEURXJKWXSHYHQO\ZLWKFKDPEHUURZV3HULPHWHUPXVWEH IXOO\EDFNÛOOHGZLWKVWRQHH[WHQGHGKRUL]RQWDOO\WRWKHH[FDYDWLRQZDOO Perimeter Not Backfilled Perimeter Fully Backfilled 3 12" (300 mm)MAX. "ऺ௑#0=8>ऺ,9/ऺ:9/4?4:9>ऺ:1ऺ",70௒ऺ,=0ऺ,A,47,-70ऺ:9ऺ?30ऺ"ऺB0->4?0யऺBBBற,/>ர;4;0ற.:8றऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ?30ऺ"ऺ7:2:யऺ,9/ऺ?30ऺ2=009ऺ>?=4;0ऺ,=0ऺ =024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺ"?:=8#0.3®ऺ,9/ऺ?30ऺ>:7,?:=®ऺ!:Bऺ$"ऺ,=0ऺ=024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ"?:=8#0.3யऺ9.றOவளவவऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺऺநழழழளஶऺऺஶலவவऺ" :?0>஽ ழறऺஶஹ௒ऺ஫஼ளளऺ88஬ऺ:1ऺ>?,-474E0/ऺ.:A0=ऺ8,?0=4,7>ऺ :A0=ऺ?30ऺ.3,8-0=>ऺ4>ऺ=0.:8809/0/ऺ/@=492ऺ ?30ऺ.:9>?=@.?4:9ऺ;3,>0ऺ41ऺ2090=,7ऺ.:9>?=@.?4:9ऺ,.?4A4?40>யऺ>@.3ऺ,>ऺ1@77ऺ/@8;ऺ?=@.6ऺ?=,A07ऺ,9/ऺ/@8;492யऺ,=0ऺ?:ऺ:..@=ऺ:A0=ऺ?30ऺ-0/ற வறऺ@=492ऺ;,A492ऺ:;0=,?4:9>யऺ/@8;ऺ?=@.6ऺ,C70ऺ7:,/>ऺ:9ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ8,Dऺ-0ऺ90.0>>,=Dறऺ=0.,@?4:9>ऺ>3:@7/ऺ-0ऺ?,609ऺ?:ऺ ,A:4/ऺ=@??492ऺ:1ऺ?30ऺ=:,/ऺ-,>0ऺ7,D0=யऺ?:ऺ09>@=0ऺ ?3,?ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ3,A0ऺ-009ऺ80?யऺ,9/ऺ?3,?ऺ,ऺ84948@8ऺ:1ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ0C4>?>ऺ:A0=ऺ?30ऺ.3,8-0=>றऺ:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ,//4?4:9,7ऺ2@4/,9.0ऺ:9ऺ,77:B,-70ऺ ,C70ऺ7:,/>ऺ/@=492ऺ;,A492ற ஶறऺ=:@9/ऺ;=0>>@=0ऺ1:=ऺ?=,.6ऺ/:E0=>ऺ4>ऺ?30ऺA034.70ऺ :;0=,?492ऺB0423?ऺ/4A4/0/ऺ-Dऺ?:?,7ऺ2=:@9/ऺ.:9?,.?ऺ ,=0,ऺ1:=ऺ-:?3ऺ?=,.6>றऺC.,A,?:=>ऺB477ऺ0C0=?ऺ34230=ऺ2=:@9/ऺ;=0>>@=0>ऺ-,>0/ऺ:9ऺ7:,/0/ऺ-@.60?ऺB0423?ऺ,9/ऺ-::8ऺ0C?09>4:9ற ஷறऺ494ர0C.,A,?:=>ऺ஫ி஻யளளளऺ7->லஶயஹவ஻ऺ62஬ऺ.,9ऺ-0ऺ@>0/ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ:1ऺ>?:90ऺ:A0=ऺ ?30ऺ.3,8-0=>ऺ,9/ऺ,=0ऺ7484?0/ऺ-Dऺ?30ऺ8,C48@8ऺ 2=:@9/ऺ;=0>>@=0>ऺ49ऺ#,-70ऺவऺ-,>0/ऺ:9ऺ,ऺ1@77ऺ-@.60?ऺ,?ऺ8,C48@8ऺ-::8ऺ0C?09>4:9ற ஸறऺ"?:=8#0.3ऺ/:0>ऺ9:?ऺ=0<@4=0ऺ.:8;,.?4:9ऺ:1ऺ494?4,7ऺȑ77ऺ,?ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=றऺ:B0A0=யऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ1:=ऺஹ௒ऺ஫ழஸளऺ88஬ऺ741?>ऺ8,Dऺ90.0>>4?,?0ऺ?30ऺ@>0ऺ:1ऺ>8,77ऺ.:8;,.?:=>ऺ,?ऺழ஻௒ऺ ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ற ஹறऺ"?:=,20ऺ:1ऺ8,?0=4,7>ऺ>@.3ऺ,>ऺ.:9>?=@.?4:9ऺ 8,?0=4,7>யऺ0<@4;809?யऺ>;:47>யऺ0?.றऺ>3:@7/ऺ9:?ऺ -0ऺ7:.,?0/ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08றऺ#30ऺ@>0ऺ:1ऺ0<@4;809?ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08ऺ9:?ऺ.:A0=0/ऺ49ऺ#,-70ऺவऺ஫0Cறऺ>:47ऺ84C492ऺ0<@4;809?யऺ.=,90>யऺ0?.஬ऺ4>ऺ7484?0/றऺ70,>0ऺ.:9?,.?ऺ"?:=8#0.3ऺ 1:=ऺ8:=0ऺ491:=8,?4:9ற ஺றऺ77:B,-70ऺ?=,.6ऺ7:,/>ऺ-,>0/ऺ:9ऺA034.70ऺ?=,A07ऺ:97Dறऺ C.,A,?:=>ऺ>3,77ऺ9:?ऺ:;0=,?0ऺ:9ऺ.3,8-0=ऺ-0/>ऺ@9?47ऺ?30ऺ?:?,7ऺ-,.6ȑ77ऺ=0,.30>ऺஶऺ100?ऺ஫஼ளளऺ88஬ऺ:A0=ऺ?30ऺ09?4=0ऺ-0/ற Material Location Fill Depth over Chambers in. (mm) Maximum Allowable Wheel Loads Maximum Allowable Track Loads6 Maximum Allowable Roller Loads Max Axle Load for Trucks lbs (kN) Max Wheel Load for Loaders lbs (kN) Track Width in. (mm) Max Ground Pressurepsf (kPa) Max Drum Weight or Dynamic Force lbs (kN) ऺऺऺ49,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 ஶஹ௒ऺ஫஼ளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ ஷளஸளऺ஫ழ஼ஷ஬வ஺ஹளऺ஫ழஶவ஬வழஶளऺ஫ழளவ஬ழ஺஺ளऺ஫஻ஷ஬ழஸஶளऺ஫஺ஶ஬ ஶ஻யளளளऺ஫ழஹ஼஬ ऺऺऺ94?4,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 வஷ௒ऺ஫ஹளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வ஺ஸளऺ஫ழஶழ஬ழ஼வளऺ஫஼வ஬ழஸவளऺ஫஺ஶ஬ழஶழளऺ஫ஹஶ஬ழழ஻ளऺ஫ஸஹ஬ வளயளளளऺ஫஻஼஬ வஷ௒ऺ஫ஹளள஬::>0ல@8;0/வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வஷஶளऺ஫ழழஹ஬ழ஺ஶளऺ஫஻வ஬ழஶ஼ளऺ஫ஹஹ஬ழவழளऺ஫ஸ஻஬ழழளளऺ஫ஸவ஬ ழஹயளளளऺ஫஺ழ஬ ழ஻௒ऺ஫ஷஸள஬ வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ஶஹ௒ऺ஫஼ழஷ஬ வழஷளऺ஫ழளவ஬ழஸஶளऺ஫஺ஶ஬ழவஹளऺ஫ஹள஬ழழவளऺ஫ஸஶ஬ ழளஶளऺ஫ஷ஼஬ ஸயளளளऺ஫வவ஬஫>?,?4.ऺ7:,/>ऺ:97D஬ஸ ऺऺऺ8-0/809?ऺ Stone ழவ௒ऺ஫ஶளள஬ :?ऺ77:B0/:?ऺ77:B0/ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ழழளளऺ஫ஸஶ஬஺ழளऺ஫ஶஷ஬ஹஹளऺ஫ஶவ஬ஸ஻ளऺ஫வ஻஬ :?ऺ77:B0/ ஹ௒ऺ஫ழஸள஬ :?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/ Material Location Placement Methods/ Restrictions Wheel Load Restrictions Track Load Restrictions Roller Load Restrictions See Table 2 for Maximum Construction Loads ऺऺ49,7ऺ477ऺऺऺऺऺऺ,?0=4,7 ऺA,=40?Dऺ:1ऺ;7,.0809?ऺ80?3:/>ऺ8,Dऺ-0ऺ@>0/றऺ77ऺ.:9>?=@.?4:9ऺ7:,/>ऺ8@>?ऺ9:?ऺ0C.00/ऺ?30ऺ8,C48@8ऺ7484?>ऺ49ऺ#,-70ऺவற ஶஹ௒ऺ஫஼ளளऺ88஬ऺ84948@8.:A0=ऺ=0<@4=0/ऺ1:=ऺ/@8;?=@.6>ऺ?:ऺ/@8;ऺ:A0=.3,8-0=>ற :E0=>ऺ?:ऺ;@>3ऺ;,=,7707ऺ?:=:B>றஷ !:770=ऺ?=,A07ऺ;,=,7707ऺ?:ऺ=:B>:97Dऺ@9?47ऺஶஹ௒ऺ஫஼ளளऺ88஬.:8;,.?0/ऺ.:A0=ऺ4>=0,.30/ற ऺऺ94?4,7ऺ477ऺऺऺऺऺऺ,?0=4,7 C.,A,?:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ =0.:8809/0/ற"8,77ऺ0C.,A,?:=ऺ,77:B0/ऺ:A0=.3,8-0=>றऺ"8,77ऺ/:E0=ऺ,77:B0/ற >;3,7?ऺ.,9ऺ-0ऺ/@8;0/ऺ49?:ऺ;,A0=ऺB309ऺ.:8;,.?0/ऺ;,A0809?ऺ>@--,>0ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ?:;ऺ:1ऺ.3,8-0=>ற "8,77ऺऺ?=,.6ऺ/:E0=>ऺऺ>64/ऺ7:,/0=>ऺ,77:B0/ऺ?:ऺ2=,/0ऺ.:A0=ऺ>?:90ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ>?:90ऺ@9/0=ऺ?=,.6>ऺ,?ऺ,77ऺ?480>ற<@4;809?ऺ8@>?ऺ;@>3ऺ;,=-,7707ऺ?:ऺ=:B>ऺ,?ऺ,77ऺ?480>ற $>0ऺ/D9,84.ऺ1:=.0ऺ:1ऺ=:770=:97Dऺ,1?0=ऺ.:8;,.?0/ऺȑ77/0;?3ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬:A0=ऺ.3,8-0=>றऺ!:770=ऺ?=,A07;,=,7707ऺ?:ऺ.3,8-0=ऺ=:B>ऺ:97Dற ऺऺ8-0/809?ऺ Stone :ऺ0<@4;809?ऺ,77:B0/ऺ:9ऺ-,=0ऺ.3,8-0=>றऺ$>0ऺ0C.,A,?:=ऺ:=ऺ>?:90ऺ.:9A0D:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ:=ऺ:9ऺ1:@9/,?4:9ऺ>?:90ऺ?:ऺ0A097Dऺȑ77ऺ,=:@9/ऺ,77ऺ.3,8-0=>ऺ?:ऺ,?ऺ70,>?ऺ?30ऺ?:;ऺ:1ऺ.3,8-0=>ற :ऺB3007ऺ7:,/>ऺ,77:B0/ற,?0=4,7ऺ8@>?ऺ-0ऺ;7,.0/:@?>4/0ऺ?30ऺ7484?>ऺ:1ऺ?30.3,8-0=ऺ-0/ற :ऺ?=,.60/ऺ0<@4;809?ऺ4>,77:B0/ऺ:9ऺ.3,8-0=>ऺ@9?47,ऺ849றऺழவ௒ऺ஫ஶளளऺ88஬ऺ.:A0=>?:90ऺ4>ऺ49ऺ;7,.0ற :ऺ=:770=>ऺ,77:B0/ற ऺऺ:@9/,?4:9ऺ Stone :ऺ"?:=8#0.3ऺ=0>?=4.?4:9>றऺ:9?=,.?:=ऺ=0>;:9>4-70ऺ1:=ऺ,9Dऺ.:9/4?4:9>ऺ:=ऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ=07,?4A0ऺ?:ऺ>@-2=,/0ऺ-0,=492.,;,.4?Dயऺ/0B,?0=492ऺ:=ऺ;=:?0.?4:9ऺ:1ऺ>@-2=,/0ற Table 2ऺரऺ,C48@8ऺ77:B,-70ऺ:9>?=@.?4:9ऺ%034.70ऺ:,/>ஹ Table 3ऺரऺ7,.0809?ऺ0?3:/>ऺ,9/ऺ0>.=4;?4:9> 6 Material Location Description AASHTO M43 Designation1 Compaction/Density Requirement D Final Fill: 477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ >?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ௏ௐऺ7,D0=ऺ?:ऺ?30ऺ -:??:8ऺ:1ऺȒ0C4-70ऺ;,A0809?ऺ:=ऺ@9;,A0/ऺ ȑ94>30/ऺ2=,/0ऺ,-:A0றऺ:?0ऺ?3,?ऺ?30ऺ ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ ௏ௐऺ7,D0=ற 9Dऺ>:47ல=:.6ऺ8,?0=4,7>யऺ 9,?4A0ऺ>:47>ऺ:=ऺ;0=ऺ 0924900=ௐ>ऺ;7,9>றऺ30.6ऺ ;7,9>ऺ1:=ऺ;,A0809?ऺ >@-2=,/0ऺ=0<@4=0809?>ற ல=0;,=0ऺ;0=ऺ>4?0ऺ/0>429ऺ0924900=ௐ>ऺ ;7,9>றऺ,A0/ऺ49>?,77,?4:9>ऺ8,Dऺ3,A0ऺ >?=49209?ऺ8,?0=4,7ऺ,9/ऺ;=0;,=,?4:9ऺ =0<@4=0809?>ற C Initial Fill:ऺ477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ >?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ08-0/809?ऺ >?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ ?30ऺ?:;ऺ:1ऺ?30ऺ.3,8-0=றऺ:?0ऺ?3,?ऺ ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ ௏ௐऺ7,D0=ற =,9@7,=ऺB077ர2=,/0/ऺ >:47ல,22=02,?0ऺ84C?@=0>யऺ ிஶஸனऺȑ90>ऺ:=ऺ;=:.0>>0/ऺ ,22=02,?0றऺ:>?ऺ ;,A0809?ऺ>@--,>0ऺ 8,?0=4,7>ऺ.,9ऺ-0ऺ@>0/ऺ49ऺ 740@ऺ:1ऺ?34>ऺ7,D0=ற "#ऺழஷஸ ரழயऺரவரஷயऺரஶ := "#ऺஷஶழऺ ஶயऺஶஸ஺யऺஷயऺஷஹ஺யऺஸயऺஸஹயऺ ஸ஺யऺஹயऺஹ஺யऺஹ஻யऺ஺யऺ஺஻யऺ஻யऺ ஻஼யऺ஼யऺழள 0249ऺ.:8;,.?4:9ऺ,1?0=ऺ849றऺவஷ௒ऺ஫ஹளளऺ 88஬ऺ:1ऺ8,?0=4,7ऺ:A0=ऺ?30ऺ.3,8-0=>ऺ 4>ऺ=0,.30/றऺ:8;,.?ऺ,//4?4:9,7ऺ7,D0=>ऺ 49ऺழவ௒ऺ஫ஶளளऺ88஬ऺ8,Cறऺ741?>ऺ?:ऺ,ऺ849றऺ ஼ஸனऺ=:.?:=ऺ/09>4?Dऺ1:=ऺB077ர2=,/0/ऺ 8,?0=4,7ऺ,9/ऺ஼ஸனऺ=07,?4A0ऺ/09>4?Dऺ1:=ऺ ;=:.0>>0/ऺ,22=02,?0ऺ8,?0=4,7>றऺ B Embedment Stone:ऺ477ऺ?30ऺ >@==:@9/492ऺ.3,8-0=>ऺ1=:8ऺ?30ऺ 1:@9/,?4:9ऺ>?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺ?30ऺ௏ௐऺ 7,D0=ऺ,-:A0ற 70,9யऺ.=@>30/யऺ,92@7,=ऺ >?:90 "#ऺஷஶழ ஶயऺஷ :ऺ.:8;,.?4:9ऺ=0<@4=0/ற A Foundation Stone: 477ऺ-07:Bऺ.3,8-0=>ऺ1=:8ऺ?30ऺ>@-2=,/0ऺ@;ऺ?:ऺ?30ऺ1::?ऺ஫-:??:8஬ऺ:1ऺ?30ऺ.3,8-0=றऺ 70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ய "#ऺஷஶழ ஶயऺஷ 7,.0ऺ,9/ऺ.:8;,.?ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ8,Cऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றவயऺஶ Table 1ரऺ..0;?,-70ऺ477ऺ,?0=4,7>Figure 1ரऺ9>;0.?4:9ऺ:=?ऺ0?,47 Please Note:ழறऺ#30ऺ74>?0/ऺ"#ऺ/0>429,?4:9>ऺ,=0ऺ1:=ऺ2=,/,?4:9>ऺ:97Dறऺ#30ऺ>?:90ऺ8@>?ऺ,7>:ऺ-0ऺ.70,9யऺ.=@>30/யऺ,92@7,=றऺ:=ऺ0C,8;70யऺ,ऺ>;0.4ȑ.,?4:9ऺ1:=ऺநஷऺ>?:90ऺB:@7/ऺ>?,?0஽ऺ௑.70,9யऺ.=@>30/யऺ,92@7,=ऺ9:றऺஷऺ஫"#ऺஷஶ஬ऺ>?:90௒றவறऺ"?:=8#0.3ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ,=0ऺ80?ऺ1:=ऺ௏ௐऺ7:.,?4:9ऺ8,?0=4,7>ऺB309ऺ;7,.0/ऺ,9/ऺ.:8;,.?0/ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ஫8,C஬ऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றஶறऺ&30=0ऺ49ȑ7?=,?4:9ऺ>@=1,.0>ऺ8,Dऺ-0ऺ.:8;=4>0/ऺ-Dऺ.:8;,.?4:9யऺ1:=ऺ>?,9/,=/ऺ49>?,77,?4:9>ऺ,9/ऺ>?,9/,=/ऺ/0>429ऺ7:,/ऺ.:9/4?4:9>யऺ,ऺȒ,?ऺ>@=1,.0ऺ8,Dऺ-0ऺ,.340A0/ऺ-Dऺ=,6492ऺ:=ऺ/=,22492ऺB4?3:@?ऺ.:8;,.?4:9ऺ0<@4;809?றऺ:=ऺ>;0.4,7ऺ7:,/ऺ/0>429>யऺ.:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ.:8;,.?4:9ऺ=0<@4=0809?>ற Figure 2ऺரऺ477ऺ,?0=4,7ऺ:.,?4:9> 5 NOTE:INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION VALLEY. STORMTECHCHAMBER CONCRETE COLLAR PAVEMENT 12" (300 mm) MIN WIDTH CONCRETE SLAB6" (150 mm) MINTHICKNESS 4" PVC INSPECTION PORT DETAIL(MC SERIES CHAMBER) NTS 8" NYLOPLAST INSPECTION PORTBODY (PART# 2708AG4IPKIT) ORTRAFFIC RATED BOX W/SOLIDLOCKING COVER CONCRETE COLLAR NOT REQUIREDFOR UNPAVED APPLICATIONS 4" (100 mm)SDR 35 PIPE 4" (100 mm) INSERTA TEETO BE CENTERED ONCORRUGATION VALLEY Backﬁll of Chambers – Embedment Stone and Cover Stone Final Backﬁll of Chambers – Fill Material Inserta Tee Detail :9?49@0ऺ0A097Dऺ-,.6ȑ77492ऺ-0?B009ऺ=:B>ऺ,9/ऺ,=:@9/ऺ;0=480?0=ऺ@9?47ऺ 08-0/809?ऺ>?:90ऺ=0,.30>ऺ?:;>ऺ:1ऺ.3,8-0=>ऺ,9/ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ :1ऺ.:A0=ऺ>?:90ऺ4>ऺ49ऺ;7,.0றऺ0=480?0=ऺ>?:90ऺ8@>?ऺ0C?09/ऺ3:=4E:9?,77Dऺ?:ऺ?30ऺ 0C.,A,?4:9ऺB,77ऺ1:=ऺ-:?3ऺ>?=,423?ऺ:=ऺ>7:;0/ऺ>4/0B,77>றऺ#30ऺ=0.:8809/0/ऺ -,.6ȑ77ऺ80?3:/>ऺ,=0ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:@?>4/0ऺ:1ऺ?30ऺ-0/ऺ:=ऺ-@47/ऺ,>ऺ D:@ऺ2:ऺB4?3ऺ,9ऺ0C.,A,?:=ऺ49>4/0ऺ?30ऺ-0/ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:B>றऺ,.6ȑ77492ऺ B3470ऺ,>>08-7492ऺ.3,8-0=>ऺ=:B>ऺ,>ऺ>3:B9ऺ49ऺ?30ऺ;4.?@=0ऺB477ऺ307;ऺ?:ऺ09>@=0ऺ ?3,?ऺ0<@4;809?ऺ=0,.3ऺ4>ऺ9:?ऺ0C.00/0/ற 9>?,77ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ>?:90றऺ0:?0C?470ऺ8@>?ऺ:A0=7,;ऺவஷ௒ऺ஫ஹளளऺ88஬ऺB30=0ऺ0/20>ऺ800?றऺ:8;,.?ऺ,?ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ:1ऺȑ77றऺ!:770=ऺ?=,A07ऺ;,=,7707ऺB4?3ऺ=:B>ற :8E़-2@1>़/4-9.1>?़4-B1़.11:़.-/7ȓ8810़@;़@;<़;2़/4-9.1>़-:0़ with a minimum 12” (300 mm) of cover stone on top of chambers can ?750़8;-01>?़-:0़?9-88़ ़0;F1>?़.1़A?10़@;़ȓ:-8़3>-01़/;B1>़?@;:1़ -:0़.-/7ȓ88़9-@1>5-8़5:़-//;>0-:/1़C5@4़3>;A:0़<>1??A>1़8595@?़5:़ Table 2. <@4;809?ऺ8@>?ऺ;@>3ऺ8,?0=4,7ऺ;,=,7707ऺ?:ऺ=:B>ऺ:97Dறऺ0A0=ऺ;@>3ऺ ;0=;09/4.@7,=ऺ?:ऺ=:B>றऺ"?:=8#0.3ऺ=0.:8809/>ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?ऺ .3,8-0=ऺ=:B>ऺ-01:=0ऺ;7,.492ऺȑ9,7ऺ-,.6ȑ77றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ .:9>?=@.?4:9ऺ0<@4;809?ऺ>3,77ऺ-0ऺ=08:A0/ऺ,9/ऺ=0;7,.0/ற 4 CONVEYANCE PIPE MATERIAL MAY VARY (PVC, HDPE, ETC.) INSERTA TEE CONNECTION PLACE ADS PLUS WOVEN GEOTEXTILE (CENTERED ON INSERTA-TEE INLET) OVER BEDDING STONE FOR SCOUR PROTECTION AT SIDE INLET CONNECTIONS, GEOTEXTILE MUST EXTEND 6” (150 mm) PAST CHAMBER FOOT 72 ,77ऺ"?:=8#0.3ऺ,?ऺ888.892.2694ऺ1:=ऺ?0.394.,7ऺ,9/ऺ ;=:/@.?ऺ491:=8,?4:9ऺ:=ऺA4>4?ऺBBBற>?:=8?0.3ற.:8 "ऺ௑#0=8>ऺ,9/ऺ:9/4?4:9>ऺ:1ऺ",70௒ऺ,=0ऺ,A,47,-70ऺ:9ऺ?30ऺ"ऺB0->4?0யऺBBBற,/>ர;4;0ற.:8றऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ?30ऺ"ऺ7:2:யऺ,9/ऺ?30ऺ2=009ऺ>?=4;0ऺ,=0ऺ =024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺ"?:=8#0.3®ऺ,9/ऺ?30ऺ>:7,?:=®ऺ!:Bऺ$"ऺ,=0ऺ=024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ"?:=8#0.3யऺ9.றOவளவவऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺऺநழழழளஶऺऺஶலவவऺ" :?0>஽ ழறऺஶஹ௒ऺ஫஼ளளऺ88஬ऺ:1ऺ>?,-474E0/ऺ.:A0=ऺ8,?0=4,7>ऺ :A0=ऺ?30ऺ.3,8-0=>ऺ4>ऺ=0.:8809/0/ऺ/@=492ऺ ?30ऺ.:9>?=@.?4:9ऺ;3,>0ऺ41ऺ2090=,7ऺ.:9>?=@.?4:9ऺ,.?4A4?40>யऺ>@.3ऺ,>ऺ1@77ऺ/@8;ऺ?=@.6ऺ?=,A07ऺ,9/ऺ/@8;492யऺ,=0ऺ?:ऺ:..@=ऺ:A0=ऺ?30ऺ-0/ற வறऺ@=492ऺ;,A492ऺ:;0=,?4:9>யऺ/@8;ऺ?=@.6ऺ,C70ऺ7:,/>ऺ:9ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ8,Dऺ-0ऺ90.0>>,=Dறऺ=0.,@?4:9>ऺ>3:@7/ऺ-0ऺ?,609ऺ?:ऺ ,A:4/ऺ=@??492ऺ:1ऺ?30ऺ=:,/ऺ-,>0ऺ7,D0=யऺ?:ऺ09>@=0ऺ ?3,?ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ3,A0ऺ-009ऺ80?யऺ,9/ऺ?3,?ऺ,ऺ84948@8ऺ:1ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ0C4>?>ऺ:A0=ऺ?30ऺ.3,8-0=>றऺ:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ,//4?4:9,7ऺ2@4/,9.0ऺ:9ऺ,77:B,-70ऺ ,C70ऺ7:,/>ऺ/@=492ऺ;,A492ற ஶறऺ=:@9/ऺ;=0>>@=0ऺ1:=ऺ?=,.6ऺ/:E0=>ऺ4>ऺ?30ऺA034.70ऺ :;0=,?492ऺB0423?ऺ/4A4/0/ऺ-Dऺ?:?,7ऺ2=:@9/ऺ.:9?,.?ऺ ,=0,ऺ1:=ऺ-:?3ऺ?=,.6>றऺC.,A,?:=>ऺB477ऺ0C0=?ऺ34230=ऺ2=:@9/ऺ;=0>>@=0>ऺ-,>0/ऺ:9ऺ7:,/0/ऺ-@.60?ऺB0423?ऺ,9/ऺ-::8ऺ0C?09>4:9ற ஷறऺ494ர0C.,A,?:=>ऺ஫ி஻யளளளऺ7->லஶயஹவ஻ऺ62஬ऺ.,9ऺ-0ऺ@>0/ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ:1ऺ>?:90ऺ:A0=ऺ ?30ऺ.3,8-0=>ऺ,9/ऺ,=0ऺ7484?0/ऺ-Dऺ?30ऺ8,C48@8ऺ 2=:@9/ऺ;=0>>@=0>ऺ49ऺ#,-70ऺவऺ-,>0/ऺ:9ऺ,ऺ1@77ऺ-@.60?ऺ,?ऺ8,C48@8ऺ-::8ऺ0C?09>4:9ற ஸறऺ"?:=8#0.3ऺ/:0>ऺ9:?ऺ=0<@4=0ऺ.:8;,.?4:9ऺ:1ऺ494?4,7ऺȑ77ऺ,?ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=றऺ:B0A0=யऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ1:=ऺஹ௒ऺ஫ழஸளऺ88஬ऺ741?>ऺ8,Dऺ90.0>>4?,?0ऺ?30ऺ@>0ऺ:1ऺ>8,77ऺ.:8;,.?:=>ऺ,?ऺழ஻௒ऺ ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ற ஹறऺ"?:=,20ऺ:1ऺ8,?0=4,7>ऺ>@.3ऺ,>ऺ.:9>?=@.?4:9ऺ 8,?0=4,7>யऺ0<@4;809?யऺ>;:47>யऺ0?.றऺ>3:@7/ऺ9:?ऺ -0ऺ7:.,?0/ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08றऺ#30ऺ@>0ऺ:1ऺ0<@4;809?ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08ऺ9:?ऺ.:A0=0/ऺ49ऺ#,-70ऺவऺ஫0Cறऺ>:47ऺ84C492ऺ0<@4;809?யऺ.=,90>யऺ0?.஬ऺ4>ऺ7484?0/றऺ70,>0ऺ.:9?,.?ऺ"?:=8#0.3ऺ 1:=ऺ8:=0ऺ491:=8,?4:9ற ஺றऺ77:B,-70ऺ?=,.6ऺ7:,/>ऺ-,>0/ऺ:9ऺA034.70ऺ?=,A07ऺ:97Dறऺ C.,A,?:=>ऺ>3,77ऺ9:?ऺ:;0=,?0ऺ:9ऺ.3,8-0=ऺ-0/>ऺ@9?47ऺ?30ऺ?:?,7ऺ-,.6ȑ77ऺ=0,.30>ऺஶऺ100?ऺ஫஼ளளऺ88஬ऺ:A0=ऺ?30ऺ09?4=0ऺ-0/ற Material Location Fill Depth over Chambers in. (mm) Maximum Allowable Wheel Loads Maximum Allowable Track Loads6 Maximum Allowable Roller Loads Max Axle Load for Trucks lbs (kN) Max Wheel Load for Loaders lbs (kN) Track Width in. (mm) Max Ground Pressurepsf (kPa) Max Drum Weight or Dynamic Force lbs (kN) ऺऺऺ49,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 ஶஹ௒ऺ஫஼ளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ ஷளஸளऺ஫ழ஼ஷ஬வ஺ஹளऺ஫ழஶவ஬வழஶளऺ஫ழளவ஬ழ஺஺ளऺ஫஻ஷ஬ழஸஶளऺ஫஺ஶ஬ ஶ஻யளளளऺ஫ழஹ஼஬ ऺऺऺ94?4,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 வஷ௒ऺ஫ஹளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வ஺ஸளऺ஫ழஶழ஬ழ஼வளऺ஫஼வ஬ழஸவளऺ஫஺ஶ஬ழஶழளऺ஫ஹஶ஬ழழ஻ளऺ஫ஸஹ஬ வளயளளளऺ஫஻஼஬ வஷ௒ऺ஫ஹளள஬::>0ல@8;0/வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வஷஶளऺ஫ழழஹ஬ழ஺ஶளऺ஫஻வ஬ழஶ஼ளऺ஫ஹஹ஬ழவழளऺ஫ஸ஻஬ழழளளऺ஫ஸவ஬ ழஹயளளளऺ஫஺ழ஬ ழ஻௒ऺ஫ஷஸள஬ வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ஶஹ௒ऺ஫஼ழஷ஬ வழஷளऺ஫ழளவ஬ழஸஶளऺ஫஺ஶ஬ழவஹளऺ஫ஹள஬ழழவளऺ஫ஸஶ஬ ழளஶளऺ஫ஷ஼஬ ஸயளளளऺ஫வவ஬஫>?,?4.ऺ7:,/>ऺ:97D஬ஸ ऺऺऺ8-0/809?ऺ Stone ழவ௒ऺ஫ஶளள஬ :?ऺ77:B0/:?ऺ77:B0/ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ழழளளऺ஫ஸஶ஬஺ழளऺ஫ஶஷ஬ஹஹளऺ஫ஶவ஬ஸ஻ளऺ஫வ஻஬ :?ऺ77:B0/ ஹ௒ऺ஫ழஸள஬ :?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/ Material Location Placement Methods/ Restrictions Wheel Load Restrictions Track Load Restrictions Roller Load Restrictions See Table 2 for Maximum Construction Loads ऺऺ49,7ऺ477ऺऺऺऺऺऺ,?0=4,7 ऺA,=40?Dऺ:1ऺ;7,.0809?ऺ80?3:/>ऺ8,Dऺ-0ऺ@>0/றऺ77ऺ.:9>?=@.?4:9ऺ7:,/>ऺ8@>?ऺ9:?ऺ0C.00/ऺ?30ऺ8,C48@8ऺ7484?>ऺ49ऺ#,-70ऺவற ஶஹ௒ऺ஫஼ளளऺ88஬ऺ84948@8.:A0=ऺ=0<@4=0/ऺ1:=ऺ/@8;?=@.6>ऺ?:ऺ/@8;ऺ:A0=.3,8-0=>ற :E0=>ऺ?:ऺ;@>3ऺ;,=,7707ऺ?:=:B>றஷ !:770=ऺ?=,A07ऺ;,=,7707ऺ?:ऺ=:B>:97Dऺ@9?47ऺஶஹ௒ऺ஫஼ளளऺ88஬.:8;,.?0/ऺ.:A0=ऺ4>=0,.30/ற ऺऺ94?4,7ऺ477ऺऺऺऺऺऺ,?0=4,7 C.,A,?:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ =0.:8809/0/ற"8,77ऺ0C.,A,?:=ऺ,77:B0/ऺ:A0=.3,8-0=>றऺ"8,77ऺ/:E0=ऺ,77:B0/ற >;3,7?ऺ.,9ऺ-0ऺ/@8;0/ऺ49?:ऺ;,A0=ऺB309ऺ.:8;,.?0/ऺ;,A0809?ऺ>@--,>0ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ?:;ऺ:1ऺ.3,8-0=>ற "8,77ऺऺ?=,.6ऺ/:E0=>ऺऺ>64/ऺ7:,/0=>ऺ,77:B0/ऺ?:ऺ2=,/0ऺ.:A0=ऺ>?:90ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ>?:90ऺ@9/0=ऺ?=,.6>ऺ,?ऺ,77ऺ?480>ற<@4;809?ऺ8@>?ऺ;@>3ऺ;,=-,7707ऺ?:ऺ=:B>ऺ,?ऺ,77ऺ?480>ற $>0ऺ/D9,84.ऺ1:=.0ऺ:1ऺ=:770=:97Dऺ,1?0=ऺ.:8;,.?0/ऺȑ77/0;?3ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬:A0=ऺ.3,8-0=>றऺ!:770=ऺ?=,A07;,=,7707ऺ?:ऺ.3,8-0=ऺ=:B>ऺ:97Dற ऺऺ8-0/809?ऺ Stone :ऺ0<@4;809?ऺ,77:B0/ऺ:9ऺ-,=0ऺ.3,8-0=>றऺ$>0ऺ0C.,A,?:=ऺ:=ऺ>?:90ऺ.:9A0D:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ:=ऺ:9ऺ1:@9/,?4:9ऺ>?:90ऺ?:ऺ0A097Dऺȑ77ऺ,=:@9/ऺ,77ऺ.3,8-0=>ऺ?:ऺ,?ऺ70,>?ऺ?30ऺ?:;ऺ:1ऺ.3,8-0=>ற :ऺB3007ऺ7:,/>ऺ,77:B0/ற,?0=4,7ऺ8@>?ऺ-0ऺ;7,.0/:@?>4/0ऺ?30ऺ7484?>ऺ:1ऺ?30.3,8-0=ऺ-0/ற :ऺ?=,.60/ऺ0<@4;809?ऺ4>,77:B0/ऺ:9ऺ.3,8-0=>ऺ@9?47,ऺ849றऺழவ௒ऺ஫ஶளளऺ88஬ऺ.:A0=>?:90ऺ4>ऺ49ऺ;7,.0ற :ऺ=:770=>ऺ,77:B0/ற ऺऺ:@9/,?4:9ऺ Stone :ऺ"?:=8#0.3ऺ=0>?=4.?4:9>றऺ:9?=,.?:=ऺ=0>;:9>4-70ऺ1:=ऺ,9Dऺ.:9/4?4:9>ऺ:=ऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ=07,?4A0ऺ?:ऺ>@-2=,/0ऺ-0,=492.,;,.4?Dயऺ/0B,?0=492ऺ:=ऺ;=:?0.?4:9ऺ:1ऺ>@-2=,/0ற Table 2ऺரऺ,C48@8ऺ77:B,-70ऺ:9>?=@.?4:9ऺ%034.70ऺ:,/>ஹ Table 3ऺரऺ7,.0809?ऺ0?3:/>ऺ,9/ऺ0>.=4;?4:9> 6 Material Location Description AASHTO M43 Designation1 Compaction/Density Requirement D Final Fill: 477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ >?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ௏ௐऺ7,D0=ऺ?:ऺ?30ऺ -:??:8ऺ:1ऺȒ0C4-70ऺ;,A0809?ऺ:=ऺ@9;,A0/ऺ ȑ94>30/ऺ2=,/0ऺ,-:A0றऺ:?0ऺ?3,?ऺ?30ऺ ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ ௏ௐऺ7,D0=ற 9Dऺ>:47ல=:.6ऺ8,?0=4,7>யऺ 9,?4A0ऺ>:47>ऺ:=ऺ;0=ऺ 0924900=ௐ>ऺ;7,9>றऺ30.6ऺ ;7,9>ऺ1:=ऺ;,A0809?ऺ >@-2=,/0ऺ=0<@4=0809?>ற ல=0;,=0ऺ;0=ऺ>4?0ऺ/0>429ऺ0924900=ௐ>ऺ ;7,9>றऺ,A0/ऺ49>?,77,?4:9>ऺ8,Dऺ3,A0ऺ >?=49209?ऺ8,?0=4,7ऺ,9/ऺ;=0;,=,?4:9ऺ =0<@4=0809?>ற C Initial Fill:ऺ477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ >?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ08-0/809?ऺ >?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ ?30ऺ?:;ऺ:1ऺ?30ऺ.3,8-0=றऺ:?0ऺ?3,?ऺ ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ ௏ௐऺ7,D0=ற =,9@7,=ऺB077ர2=,/0/ऺ >:47ல,22=02,?0ऺ84C?@=0>யऺ ிஶஸனऺȑ90>ऺ:=ऺ;=:.0>>0/ऺ ,22=02,?0றऺ:>?ऺ ;,A0809?ऺ>@--,>0ऺ 8,?0=4,7>ऺ.,9ऺ-0ऺ@>0/ऺ49ऺ 740@ऺ:1ऺ?34>ऺ7,D0=ற "#ऺழஷஸ ரழயऺரவரஷயऺரஶ := "#ऺஷஶழऺ ஶயऺஶஸ஺யऺஷயऺஷஹ஺யऺஸயऺஸஹயऺ ஸ஺யऺஹயऺஹ஺யऺஹ஻யऺ஺யऺ஺஻யऺ஻யऺ ஻஼யऺ஼யऺழள 0249ऺ.:8;,.?4:9ऺ,1?0=ऺ849றऺவஷ௒ऺ஫ஹளளऺ 88஬ऺ:1ऺ8,?0=4,7ऺ:A0=ऺ?30ऺ.3,8-0=>ऺ 4>ऺ=0,.30/றऺ:8;,.?ऺ,//4?4:9,7ऺ7,D0=>ऺ 49ऺழவ௒ऺ஫ஶளளऺ88஬ऺ8,Cறऺ741?>ऺ?:ऺ,ऺ849றऺ ஼ஸனऺ=:.?:=ऺ/09>4?Dऺ1:=ऺB077ர2=,/0/ऺ 8,?0=4,7ऺ,9/ऺ஼ஸனऺ=07,?4A0ऺ/09>4?Dऺ1:=ऺ ;=:.0>>0/ऺ,22=02,?0ऺ8,?0=4,7>றऺ B Embedment Stone:ऺ477ऺ?30ऺ >@==:@9/492ऺ.3,8-0=>ऺ1=:8ऺ?30ऺ 1:@9/,?4:9ऺ>?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺ?30ऺ௏ௐऺ 7,D0=ऺ,-:A0ற 70,9யऺ.=@>30/யऺ,92@7,=ऺ >?:90 "#ऺஷஶழ ஶயऺஷ :ऺ.:8;,.?4:9ऺ=0<@4=0/ற A Foundation Stone: 477ऺ-07:Bऺ.3,8-0=>ऺ1=:8ऺ?30ऺ>@-2=,/0ऺ@;ऺ?:ऺ?30ऺ1::?ऺ஫-:??:8஬ऺ:1ऺ?30ऺ.3,8-0=றऺ 70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ய "#ऺஷஶழ ஶயऺஷ 7,.0ऺ,9/ऺ.:8;,.?ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ8,Cऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றவயऺஶ Table 1ரऺ..0;?,-70ऺ477ऺ,?0=4,7>Figure 1ரऺ9>;0.?4:9ऺ:=?ऺ0?,47 Please Note:ழறऺ#30ऺ74>?0/ऺ"#ऺ/0>429,?4:9>ऺ,=0ऺ1:=ऺ2=,/,?4:9>ऺ:97Dறऺ#30ऺ>?:90ऺ8@>?ऺ,7>:ऺ-0ऺ.70,9யऺ.=@>30/யऺ,92@7,=றऺ:=ऺ0C,8;70யऺ,ऺ>;0.4ȑ.,?4:9ऺ1:=ऺநஷऺ>?:90ऺB:@7/ऺ>?,?0஽ऺ௑.70,9யऺ.=@>30/யऺ,92@7,=ऺ9:றऺஷऺ஫"#ऺஷஶ஬ऺ>?:90௒றவறऺ"?:=8#0.3ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ,=0ऺ80?ऺ1:=ऺ௏ௐऺ7:.,?4:9ऺ8,?0=4,7>ऺB309ऺ;7,.0/ऺ,9/ऺ.:8;,.?0/ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ஫8,C஬ऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றஶறऺ&30=0ऺ49ȑ7?=,?4:9ऺ>@=1,.0>ऺ8,Dऺ-0ऺ.:8;=4>0/ऺ-Dऺ.:8;,.?4:9யऺ1:=ऺ>?,9/,=/ऺ49>?,77,?4:9>ऺ,9/ऺ>?,9/,=/ऺ/0>429ऺ7:,/ऺ.:9/4?4:9>யऺ,ऺȒ,?ऺ>@=1,.0ऺ8,Dऺ-0ऺ,.340A0/ऺ-Dऺ=,6492ऺ:=ऺ/=,22492ऺB4?3:@?ऺ.:8;,.?4:9ऺ0<@4;809?றऺ:=ऺ>;0.4,7ऺ7:,/ऺ/0>429>யऺ.:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ.:8;,.?4:9ऺ=0<@4=0809?>ற Figure 2ऺரऺ477ऺ,?0=4,7ऺ:.,?4:9> 5 NOTE:INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION VALLEY. STORMTECHCHAMBER CONCRETE COLLAR PAVEMENT 12" (300 mm) MIN WIDTH CONCRETE SLAB6" (150 mm) MINTHICKNESS 4" PVC INSPECTION PORT DETAIL(MC SERIES CHAMBER) NTS 8" NYLOPLAST INSPECTION PORTBODY (PART# 2708AG4IPKIT) ORTRAFFIC RATED BOX W/SOLIDLOCKING COVER CONCRETE COLLAR NOT REQUIREDFOR UNPAVED APPLICATIONS 4" (100 mm)SDR 35 PIPE 4" (100 mm) INSERTA TEETO BE CENTERED ONCORRUGATION VALLEY Backﬁll of Chambers – Embedment Stone and Cover StoneFinal Backﬁll of Chambers – Fill Material Inserta Tee Detail:9?49@0ऺ0A097Dऺ-,.6ȑ77492ऺ-0?B009ऺ=:B>ऺ,9/ऺ,=:@9/ऺ;0=480?0=ऺ@9?47ऺ08-0/809?ऺ>?:90ऺ=0,.30>ऺ?:;>ऺ:1ऺ.3,8-0=>ऺ,9/ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ:1ऺ.:A0=ऺ>?:90ऺ4>ऺ49ऺ;7,.0றऺ0=480?0=ऺ>?:90ऺ8@>?ऺ0C?09/ऺ3:=4E:9?,77Dऺ?:ऺ?30ऺ0C.,A,?4:9ऺB,77ऺ1:=ऺ-:?3ऺ>?=,423?ऺ:=ऺ>7:;0/ऺ>4/0B,77>றऺ#30ऺ=0.:8809/0/ऺ-,.6ȑ77ऺ80?3:/>ऺ,=0ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:@?>4/0ऺ:1ऺ?30ऺ-0/ऺ:=ऺ-@47/ऺ,>ऺD:@ऺ2:ऺB4?3ऺ,9ऺ0C.,A,?:=ऺ49>4/0ऺ?30ऺ-0/ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:B>றऺ,.6ȑ77492ऺB3470ऺ,>>08-7492ऺ.3,8-0=>ऺ=:B>ऺ,>ऺ>3:B9ऺ49ऺ?30ऺ;4.?@=0ऺB477ऺ307;ऺ?:ऺ09>@=0ऺ?3,?ऺ0<@4;809?ऺ=0,.3ऺ4>ऺ9:?ऺ0C.00/0/ற9>?,77ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ>?:90றऺ0:?0C?470ऺ8@>?ऺ:A0=7,;ऺவஷ௒ऺ஫ஹளளऺ88஬ऺB30=0ऺ0/20>ऺ800?றऺ:8;,.?ऺ,?ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ:1ऺȑ77றऺ!:770=ऺ?=,A07ऺ;,=,7707ऺB4?3ऺ=:B>ற :8E़-2@1>़/4-9.1>?़4-B1़.11:़.-/7ȓ8810़@;़@;<़;2़/4-9.1>़-:0़with a minimum 12” (300 mm) of cover stone on top of chambers can ?750़8;-01>?़-:0़?9-88़ ़0;F1>?़.1़A?10़@;़ȓ:-8़3>-01़/;B1>़?@;:1़-:0़.-/7ȓ88़9-@1>5-8़5:़-//;>0-:/1़C5@4़3>;A:0़<>1??A>1़8595@?़5:़Table 2. <@4;809?ऺ8@>?ऺ;@>3ऺ8,?0=4,7ऺ;,=,7707ऺ?:ऺ=:B>ऺ:97Dறऺ0A0=ऺ;@>3ऺ;0=;09/4.@7,=ऺ?:ऺ=:B>றऺ"?:=8#0.3ऺ=0.:8809/>ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?ऺ.3,8-0=ऺ=:B>ऺ-01:=0ऺ;7,.492ऺȑ9,7ऺ-,.6ȑ77றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ.:9>?=@.?4:9ऺ0<@4;809?ऺ>3,77ऺ-0ऺ=08:A0/ऺ,9/ऺ=0;7,.0/ற 4CONVEYANCE PIPE MATERIAL MAY VARY (PVC, HDPE, ETC.)INSERTA TEE CONNECTIONPLACE ADS PLUS WOVEN GEOTEXTILE (CENTERED ON INSERTA-TEE INLET) OVER BEDDING STONE FOR SCOUR PROTECTION AT SIDE INLET CONNECTIONS, GEOTEXTILE MUST EXTEND 6” (150 mm) PAST CHAMBER FOOT 72 ,77ऺ"?:=8#0.3ऺ,?ऺ888.892.2694ऺ1:=ऺ?0.394.,7ऺ,9/ऺ ;=:/@.?ऺ491:=8,?4:9ऺ:=ऺA4>4?ऺBBBற>?:=8?0.3ற.:8 "ऺ௑#0=8>ऺ,9/ऺ:9/4?4:9>ऺ:1ऺ",70௒ऺ,=0ऺ,A,47,-70ऺ:9ऺ?30ऺ"ऺB0->4?0யऺBBBற,/>ர;4;0ற.:8றऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ?30ऺ"ऺ7:2:யऺ,9/ऺ?30ऺ2=009ऺ>?=4;0ऺ,=0ऺ =024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺ"?:=8#0.3®ऺ,9/ऺ?30ऺ>:7,?:=®ऺ!:Bऺ$"ऺ,=0ऺ=024>?0=0/ऺ?=,/08,=6>ऺ:1ऺ"?:=8#0.3யऺ9.றOவளவவऺ/A,9.0/ऺ=,49,20ऺ"D>?08>யऺ9.றऺऺநழழழளஶऺऺஶலவவऺ" :?0>஽ ழறऺஶஹ௒ऺ஫஼ளளऺ88஬ऺ:1ऺ>?,-474E0/ऺ.:A0=ऺ8,?0=4,7>ऺ :A0=ऺ?30ऺ.3,8-0=>ऺ4>ऺ=0.:8809/0/ऺ/@=492ऺ ?30ऺ.:9>?=@.?4:9ऺ;3,>0ऺ41ऺ2090=,7ऺ.:9>?=@.?4:9ऺ,.?4A4?40>யऺ>@.3ऺ,>ऺ1@77ऺ/@8;ऺ?=@.6ऺ?=,A07ऺ,9/ऺ/@8;492யऺ,=0ऺ?:ऺ:..@=ऺ:A0=ऺ?30ऺ-0/ற வறऺ@=492ऺ;,A492ऺ:;0=,?4:9>யऺ/@8;ऺ?=@.6ऺ,C70ऺ7:,/>ऺ:9ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ8,Dऺ-0ऺ90.0>>,=Dறऺ=0.,@?4:9>ऺ>3:@7/ऺ-0ऺ?,609ऺ?:ऺ ,A:4/ऺ=@??492ऺ:1ऺ?30ऺ=:,/ऺ-,>0ऺ7,D0=யऺ?:ऺ09>@=0ऺ ?3,?ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ3,A0ऺ-009ऺ80?யऺ,9/ऺ?3,?ऺ,ऺ84948@8ऺ:1ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ऺ1:=ऺர஺வளள>ऺ0C4>?>ऺ:A0=ऺ?30ऺ.3,8-0=>றऺ:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ,//4?4:9,7ऺ2@4/,9.0ऺ:9ऺ,77:B,-70ऺ ,C70ऺ7:,/>ऺ/@=492ऺ;,A492ற ஶறऺ=:@9/ऺ;=0>>@=0ऺ1:=ऺ?=,.6ऺ/:E0=>ऺ4>ऺ?30ऺA034.70ऺ :;0=,?492ऺB0423?ऺ/4A4/0/ऺ-Dऺ?:?,7ऺ2=:@9/ऺ.:9?,.?ऺ ,=0,ऺ1:=ऺ-:?3ऺ?=,.6>றऺC.,A,?:=>ऺB477ऺ0C0=?ऺ34230=ऺ2=:@9/ऺ;=0>>@=0>ऺ-,>0/ऺ:9ऺ7:,/0/ऺ-@.60?ऺB0423?ऺ,9/ऺ-::8ऺ0C?09>4:9ற ஷறऺ494ர0C.,A,?:=>ऺ஫ி஻யளளளऺ7->லஶயஹவ஻ऺ62஬ऺ.,9ऺ-0ऺ@>0/ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ:1ऺ>?:90ऺ:A0=ऺ ?30ऺ.3,8-0=>ऺ,9/ऺ,=0ऺ7484?0/ऺ-Dऺ?30ऺ8,C48@8ऺ 2=:@9/ऺ;=0>>@=0>ऺ49ऺ#,-70ऺவऺ-,>0/ऺ:9ऺ,ऺ1@77ऺ-@.60?ऺ,?ऺ8,C48@8ऺ-::8ऺ0C?09>4:9ற ஸறऺ"?:=8#0.3ऺ/:0>ऺ9:?ऺ=0<@4=0ऺ.:8;,.?4:9ऺ:1ऺ494?4,7ऺȑ77ऺ,?ऺழ஻௒ऺ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=றऺ:B0A0=யऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ1:=ऺஹ௒ऺ஫ழஸளऺ88஬ऺ741?>ऺ8,Dऺ90.0>>4?,?0ऺ?30ऺ@>0ऺ:1ऺ>8,77ऺ.:8;,.?:=>ऺ,?ऺழ஻௒ऺ ஫ஷஸளऺ88஬ऺ:1ऺ.:A0=ற ஹறऺ"?:=,20ऺ:1ऺ8,?0=4,7>ऺ>@.3ऺ,>ऺ.:9>?=@.?4:9ऺ 8,?0=4,7>யऺ0<@4;809?யऺ>;:47>யऺ0?.றऺ>3:@7/ऺ9:?ऺ -0ऺ7:.,?0/ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08றऺ#30ऺ@>0ऺ:1ऺ0<@4;809?ऺ:A0=ऺ?30ऺ"?:=8#0.3ऺ>D>?08ऺ9:?ऺ.:A0=0/ऺ49ऺ#,-70ऺவऺ஫0Cறऺ>:47ऺ84C492ऺ0<@4;809?யऺ.=,90>யऺ0?.஬ऺ4>ऺ7484?0/றऺ70,>0ऺ.:9?,.?ऺ"?:=8#0.3ऺ 1:=ऺ8:=0ऺ491:=8,?4:9ற ஺றऺ77:B,-70ऺ?=,.6ऺ7:,/>ऺ-,>0/ऺ:9ऺA034.70ऺ?=,A07ऺ:97Dறऺ C.,A,?:=>ऺ>3,77ऺ9:?ऺ:;0=,?0ऺ:9ऺ.3,8-0=ऺ-0/>ऺ@9?47ऺ?30ऺ?:?,7ऺ-,.6ȑ77ऺ=0,.30>ऺஶऺ100?ऺ஫஼ளளऺ88஬ऺ:A0=ऺ?30ऺ09?4=0ऺ-0/ற Material Location Fill Depth over Chambers in. (mm) Maximum Allowable Wheel Loads Maximum Allowable Track Loads6 Maximum Allowable Roller Loads Max Axle Load for Trucks lbs (kN) Max Wheel Load for Loaders lbs (kN) Track Width in. (mm) Max Ground Pressurepsf (kPa) Max Drum Weight or Dynamic Force lbs (kN) ऺऺऺ49,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 ஶஹ௒ऺ஫஼ளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ ஷளஸளऺ஫ழ஼ஷ஬வ஺ஹளऺ஫ழஶவ஬வழஶளऺ஫ழளவ஬ழ஺஺ளऺ஫஻ஷ஬ழஸஶளऺ஫஺ஶ஬ ஶ஻யளளளऺ஫ழஹ஼஬ ऺऺऺ94?4,7ऺ477ऺऺऺऺऺऺऺ,?0=4,7 வஷ௒ऺ஫ஹளள஬:8;,.?0/ஶவயளளளऺ஫ழஷவ஬ ழஹயளளளऺ஫஺ழ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வ஺ஸளऺ஫ழஶழ஬ழ஼வளऺ஫஼வ஬ழஸவளऺ஫஺ஶ஬ழஶழளऺ஫ஹஶ஬ழழ஻ளऺ஫ஸஹ஬ வளயளளளऺ஫஻஼஬ வஷ௒ऺ஫ஹளள஬::>0ல@8;0/வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ஶஹ௒ऺ஫஼ழஷ஬ வஷஶளऺ஫ழழஹ஬ழ஺ஶளऺ஫஻வ஬ழஶ஼ளऺ஫ஹஹ஬ழவழளऺ஫ஸ஻஬ழழளளऺ஫ஸவ஬ ழஹயளளளऺ஫஺ழ஬ ழ஻௒ऺ஫ஷஸள஬ வஷயளளளऺ஫ழள஺஬ ழவயளளளऺ஫ஸஶ஬ ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ஶஹ௒ऺ஫஼ழஷ஬ வழஷளऺ஫ழளவ஬ழஸஶளऺ஫஺ஶ஬ழவஹளऺ஫ஹள஬ழழவளऺ஫ஸஶ஬ ழளஶளऺ஫ஷ஼஬ ஸயளளளऺ஫வவ஬஫>?,?4.ऺ7:,/>ऺ:97D஬ஸ ऺऺऺ8-0/809?ऺ Stone ழவ௒ऺ஫ஶளள஬ :?ऺ77:B0/:?ऺ77:B0/ழவ௒ऺ஫ஶளஸ஬ழ஻௒ऺ஫ஷஸ஺஬வஷ௒ऺ஫ஹழள஬ஶள௒ऺ஫஺ஹவ஬ ழழளளऺ஫ஸஶ஬஺ழளऺ஫ஶஷ஬ஹஹளऺ஫ஶவ஬ஸ஻ளऺ஫வ஻஬ :?ऺ77:B0/ ஹ௒ऺ஫ழஸள஬ :?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/:?ऺ77:B0/ Material Location Placement Methods/ Restrictions Wheel Load Restrictions Track Load Restrictions Roller Load Restrictions See Table 2 for Maximum Construction Loads ऺऺ49,7ऺ477ऺऺऺऺऺऺ,?0=4,7 ऺA,=40?Dऺ:1ऺ;7,.0809?ऺ80?3:/>ऺ8,Dऺ-0ऺ@>0/றऺ77ऺ.:9>?=@.?4:9ऺ7:,/>ऺ8@>?ऺ9:?ऺ0C.00/ऺ?30ऺ8,C48@8ऺ7484?>ऺ49ऺ#,-70ऺவற ஶஹ௒ऺ஫஼ளளऺ88஬ऺ84948@8.:A0=ऺ=0<@4=0/ऺ1:=ऺ/@8;?=@.6>ऺ?:ऺ/@8;ऺ:A0=.3,8-0=>ற :E0=>ऺ?:ऺ;@>3ऺ;,=,7707ऺ?:=:B>றஷ !:770=ऺ?=,A07ऺ;,=,7707ऺ?:ऺ=:B>:97Dऺ@9?47ऺஶஹ௒ऺ஫஼ளளऺ88஬.:8;,.?0/ऺ.:A0=ऺ4>=0,.30/ற ऺऺ94?4,7ऺ477ऺऺऺऺऺऺ,?0=4,7 C.,A,?:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ =0.:8809/0/ற"8,77ऺ0C.,A,?:=ऺ,77:B0/ऺ:A0=.3,8-0=>றऺ"8,77ऺ/:E0=ऺ,77:B0/ற >;3,7?ऺ.,9ऺ-0ऺ/@8;0/ऺ49?:ऺ;,A0=ऺB309ऺ.:8;,.?0/ऺ;,A0809?ऺ>@--,>0ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ?:;ऺ:1ऺ.3,8-0=>ற "8,77ऺऺ?=,.6ऺ/:E0=>ऺऺ>64/ऺ7:,/0=>ऺ,77:B0/ऺ?:ऺ2=,/0ऺ.:A0=ऺ>?:90ऺB4?3ऺ,?ऺ70,>?ऺழவ௒ऺ஫ஶளளऺ88஬ऺ>?:90ऺ@9/0=ऺ?=,.6>ऺ,?ऺ,77ऺ?480>ற<@4;809?ऺ8@>?ऺ;@>3ऺ;,=-,7707ऺ?:ऺ=:B>ऺ,?ऺ,77ऺ?480>ற $>0ऺ/D9,84.ऺ1:=.0ऺ:1ऺ=:770=:97Dऺ,1?0=ऺ.:8;,.?0/ऺȑ77/0;?3ऺ=0,.30>ऺவஷ௒ऺ஫ஹளளऺ88஬:A0=ऺ.3,8-0=>றऺ!:770=ऺ?=,A07;,=,7707ऺ?:ऺ.3,8-0=ऺ=:B>ऺ:97Dற ऺऺ8-0/809?ऺ Stone :ऺ0<@4;809?ऺ,77:B0/ऺ:9ऺ-,=0ऺ.3,8-0=>றऺ$>0ऺ0C.,A,?:=ऺ:=ऺ>?:90ऺ.:9A0D:=ऺ;:>4?4:90/ऺ:11ऺ-0/ऺ:=ऺ:9ऺ1:@9/,?4:9ऺ>?:90ऺ?:ऺ0A097Dऺȑ77ऺ,=:@9/ऺ,77ऺ.3,8-0=>ऺ?:ऺ,?ऺ70,>?ऺ?30ऺ?:;ऺ:1ऺ.3,8-0=>ற :ऺB3007ऺ7:,/>ऺ,77:B0/ற,?0=4,7ऺ8@>?ऺ-0ऺ;7,.0/:@?>4/0ऺ?30ऺ7484?>ऺ:1ऺ?30.3,8-0=ऺ-0/ற :ऺ?=,.60/ऺ0<@4;809?ऺ4>,77:B0/ऺ:9ऺ.3,8-0=>ऺ@9?47,ऺ849றऺழவ௒ऺ஫ஶளளऺ88஬ऺ.:A0=>?:90ऺ4>ऺ49ऺ;7,.0ற :ऺ=:770=>ऺ,77:B0/ற ऺऺ:@9/,?4:9ऺ Stone :ऺ"?:=8#0.3ऺ=0>?=4.?4:9>றऺ:9?=,.?:=ऺ=0>;:9>4-70ऺ1:=ऺ,9Dऺ.:9/4?4:9>ऺ:=ऺ=0<@4=0809?>ऺ-Dऺ:?30=>ऺ=07,?4A0ऺ?:ऺ>@-2=,/0ऺ-0,=492.,;,.4?Dயऺ/0B,?0=492ऺ:=ऺ;=:?0.?4:9ऺ:1ऺ>@-2=,/0ற Table 2ऺரऺ,C48@8ऺ77:B,-70ऺ:9>?=@.?4:9ऺ%034.70ऺ:,/>ஹ Table 3ऺரऺ7,.0809?ऺ0?3:/>ऺ,9/ऺ0>.=4;?4:9> 6 Material Location Description AASHTO M43 Designation1 Compaction/Density RequirementD Final Fill: 477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ>?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ௏ௐऺ7,D0=ऺ?:ऺ?30ऺ-:??:8ऺ:1ऺȒ0C4-70ऺ;,A0809?ऺ:=ऺ@9;,A0/ऺȑ94>30/ऺ2=,/0ऺ,-:A0றऺ:?0ऺ?3,?ऺ?30ऺ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ௏ௐऺ7,D0=ற 9Dऺ>:47ல=:.6ऺ8,?0=4,7>யऺ9,?4A0ऺ>:47>ऺ:=ऺ;0=ऺ0924900=ௐ>ऺ;7,9>றऺ30.6ऺ;7,9>ऺ1:=ऺ;,A0809?ऺ>@-2=,/0ऺ=0<@4=0809?>ற ல=0;,=0ऺ;0=ऺ>4?0ऺ/0>429ऺ0924900=ௐ>ऺ;7,9>றऺ,A0/ऺ49>?,77,?4:9>ऺ8,Dऺ3,A0ऺ>?=49209?ऺ8,?0=4,7ऺ,9/ऺ;=0;,=,?4:9ऺ=0<@4=0809?>றC Initial Fill:ऺ477ऺ,?0=4,7ऺ1:=ऺ7,D0=ऺ௏ௐऺ>?,=?>ऺ1=:8ऺ?30ऺ?:;ऺ:1ऺ?30ऺ08-0/809?ऺ>?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ,-:A0ऺ?30ऺ?:;ऺ:1ऺ?30ऺ.3,8-0=றऺ:?0ऺ?3,?ऺ;,A0809?ऺ>@--,>0ऺ8,Dऺ-0ऺ;,=?ऺ:1ऺ?30ऺ௏ௐऺ7,D0=ற =,9@7,=ऺB077ர2=,/0/ऺ>:47ல,22=02,?0ऺ84C?@=0>யऺிஶஸனऺȑ90>ऺ:=ऺ;=:.0>>0/ऺ,22=02,?0றऺ:>?ऺ;,A0809?ऺ>@--,>0ऺ8,?0=4,7>ऺ.,9ऺ-0ऺ@>0/ऺ49ऺ740@ऺ:1ऺ?34>ऺ7,D0=ற "#ऺழஷஸரழயऺரவரஷயऺரஶ:="#ऺஷஶழऺ ஶயऺஶஸ஺யऺஷயऺஷஹ஺யऺஸயऺஸஹயऺஸ஺யऺஹயऺஹ஺யऺஹ஻யऺ஺யऺ஺஻யऺ஻யऺ஻஼யऺ஼யऺழள 0249ऺ.:8;,.?4:9ऺ,1?0=ऺ849றऺவஷ௒ऺ஫ஹளளऺ88஬ऺ:1ऺ8,?0=4,7ऺ:A0=ऺ?30ऺ.3,8-0=>ऺ4>ऺ=0,.30/றऺ:8;,.?ऺ,//4?4:9,7ऺ7,D0=>ऺ49ऺழவ௒ऺ஫ஶளளऺ88஬ऺ8,Cறऺ741?>ऺ?:ऺ,ऺ849றऺ஼ஸனऺ=:.?:=ऺ/09>4?Dऺ1:=ऺB077ர2=,/0/ऺ8,?0=4,7ऺ,9/ऺ஼ஸனऺ=07,?4A0ऺ/09>4?Dऺ1:=ऺ;=:.0>>0/ऺ,22=02,?0ऺ8,?0=4,7>றऺB Embedment Stone:ऺ477ऺ?30ऺ>@==:@9/492ऺ.3,8-0=>ऺ1=:8ऺ?30ऺ1:@9/,?4:9ऺ>?:90ऺ஫௏ௐऺ7,D0=஬ऺ?:ऺ?30ऺ௏ௐऺ7,D0=ऺ,-:A0ற 70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90 "#ऺஷஶழஶயऺஷ :ऺ.:8;,.?4:9ऺ=0<@4=0/றA Foundation Stone: 477ऺ-07:Bऺ.3,8-0=>ऺ1=:8ऺ?30ऺ>@-2=,/0ऺ@;ऺ?:ऺ?30ऺ1::?ऺ஫-:??:8஬ऺ:1ऺ?30ऺ.3,8-0=றऺ 70,9யऺ.=@>30/யऺ,92@7,=ऺ>?:90ய "#ऺஷஶழஶயऺஷ 7,.0ऺ,9/ऺ.:8;,.?ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ8,Cऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றவயऺஶTable 1ரऺ..0;?,-70ऺ477ऺ,?0=4,7>Figure 1ரऺ9>;0.?4:9ऺ:=?ऺ0?,47Please Note:ழறऺ#30ऺ74>?0/ऺ"#ऺ/0>429,?4:9>ऺ,=0ऺ1:=ऺ2=,/,?4:9>ऺ:97Dறऺ#30ऺ>?:90ऺ8@>?ऺ,7>:ऺ-0ऺ.70,9யऺ.=@>30/யऺ,92@7,=றऺ:=ऺ0C,8;70யऺ,ऺ>;0.4ȑ.,?4:9ऺ1:=ऺநஷऺ>?:90ऺB:@7/ऺ>?,?0஽ऺ௑.70,9யऺ.=@>30/யऺ,92@7,=ऺ9:றऺஷऺ஫"#ऺஷஶ஬ऺ>?:90௒றவறऺ"?:=8#0.3ऺ.:8;,.?4:9ऺ=0<@4=0809?>ऺ,=0ऺ80?ऺ1:=ऺ௏ௐऺ7:.,?4:9ऺ8,?0=4,7>ऺB309ऺ;7,.0/ऺ,9/ऺ.:8;,.?0/ऺ49ऺ஼௒ऺ஫வஶளऺ88஬ऺ஫8,C஬ऺ741?>ऺ@>492ऺ?B:ऺ1@77ऺ.:A0=,20>ऺB4?3ऺ,ऺA4-=,?:=Dऺ.:8;,.?:=றஶறऺ&30=0ऺ49ȑ7?=,?4:9ऺ>@=1,.0>ऺ8,Dऺ-0ऺ.:8;=4>0/ऺ-Dऺ.:8;,.?4:9யऺ1:=ऺ>?,9/,=/ऺ49>?,77,?4:9>ऺ,9/ऺ>?,9/,=/ऺ/0>429ऺ7:,/ऺ.:9/4?4:9>யऺ,ऺȒ,?ऺ>@=1,.0ऺ8,Dऺ-0ऺ,.340A0/ऺ-Dऺ=,6492ऺ:=ऺ/=,22492ऺB4?3:@?ऺ.:8;,.?4:9ऺ0<@4;809?றऺ:=ऺ>;0.4,7ऺ7:,/ऺ/0>429>யऺ.:9?,.?ऺ"?:=8#0.3ऺ1:=ऺ.:8;,.?4:9ऺ=0<@4=0809?>றFigure 2ऺரऺ477ऺ,?0=4,7ऺ:.,?4:9>5NOTE:INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION VALLEY.STORMTECHCHAMBERCONCRETE COLLARPAVEMENT 12" (300 mm) MIN WIDTHCONCRETE SLAB6" (150 mm) MINTHICKNESS4" PVC INSPECTION PORT DETAIL(MC SERIES CHAMBER)NTS 8" NYLOPLAST INSPECTION PORTBODY (PART# 2708AG4IPKIT) ORTRAFFIC RATED BOX W/SOLIDLOCKING COVERCONCRETE COLLAR NOT REQUIREDFOR UNPAVED APPLICATIONS4" (100 mm)SDR 35 PIPE4" (100 mm) INSERTA TEETO BE CENTERED ONCORRUGATION VALLEYBackﬁll of Chambers – Embedment Stone and Cover StoneFinal Backﬁll of Chambers – Fill Material Inserta Tee Detail:9?49@0ऺ0A097Dऺ-,.6ȑ77492ऺ-0?B009ऺ=:B>ऺ,9/ऺ,=:@9/ऺ;0=480?0=ऺ@9?47ऺ08-0/809?ऺ>?:90ऺ=0,.30>ऺ?:;>ऺ:1ऺ.3,8-0=>ऺ,9/ऺ,ऺ84948@8ऺழவ௒ऺ஫ஶளளऺ88஬ऺ:1ऺ.:A0=ऺ>?:90ऺ4>ऺ49ऺ;7,.0றऺ0=480?0=ऺ>?:90ऺ8@>?ऺ0C?09/ऺ3:=4E:9?,77Dऺ?:ऺ?30ऺ0C.,A,?4:9ऺB,77ऺ1:=ऺ-:?3ऺ>?=,423?ऺ:=ऺ>7:;0/ऺ>4/0B,77>றऺ#30ऺ=0.:8809/0/ऺ-,.6ȑ77ऺ80?3:/>ऺ,=0ऺB4?3ऺ,ऺ>?:90ऺ.:9A0D:=ऺ:@?>4/0ऺ:1ऺ?30ऺ-0/ऺ:=ऺ-@47/ऺ,>ऺD:@ऺ2:ऺB4?3ऺ,9ऺ0C.,A,?:=ऺ49>4/0ऺ?30ऺ-0/ऺ=0,.3492ऺ,7:92ऺ?30ऺ=:B>றऺ,.6ȑ77492ऺB3470ऺ,>>08-7492ऺ.3,8-0=>ऺ=:B>ऺ,>ऺ>3:B9ऺ49ऺ?30ऺ;4.?@=0ऺB477ऺ307;ऺ?:ऺ09>@=0ऺ?3,?ऺ0<@4;809?ऺ=0,.3ऺ4>ऺ9:?ऺ0C.00/0/ற9>?,77ऺ9:9ரB:A09ऺ20:?0C?470ऺ:A0=ऺ>?:90றऺ0:?0C?470ऺ8@>?ऺ:A0=7,;ऺவஷ௒ऺ஫ஹளளऺ88஬ऺB30=0ऺ0/20>ऺ800?றऺ:8;,.?ऺ,?ऺவஷ௒ऺ஫ஹளளऺ88஬ऺ:1ऺȑ77றऺ!:770=ऺ?=,A07ऺ;,=,7707ऺB4?3ऺ=:B>ற :8E़-2@1>़/4-9.1>?़4-B1़.11:़.-/7ȓ8810़@;़@;<़;2़/4-9.1>़-:0़with a minimum 12” (300 mm) of cover stone on top of chambers can ?750़8;-01>?़-:0़?9-88़ ़0;F1>?़.1़A?10़@;़ȓ:-8़3>-01़/;B1>़?@;:1़-:0़.-/7ȓ88़9-@1>5-8़5:़-//;>0-:/1़C5@4़3>;A:0़<>1??A>1़8595@?़5:़Table 2. <@4;809?ऺ8@>?ऺ;@>3ऺ8,?0=4,7ऺ;,=,7707ऺ?:ऺ=:B>ऺ:97Dறऺ0A0=ऺ;@>3ऺ;0=;09/4.@7,=ऺ?:ऺ=:B>றऺ"?:=8#0.3ऺ=0.:8809/>ऺ?30ऺ.:9?=,.?:=ऺ49>;0.?ऺ.3,8-0=ऺ=:B>ऺ-01:=0ऺ;7,.492ऺȑ9,7ऺ-,.6ȑ77றऺ9Dऺ.3,8-0=>ऺ/,8,20/ऺ-Dऺ.:9>?=@.?4:9ऺ0<@4;809?ऺ>3,77ऺ-0ऺ=08:A0/ऺ,9/ऺ=0;7,.0/ற 4CONVEYANCE PIPE MATERIAL MAY VARY (PVC, HDPE, ETC.)INSERTA TEE CONNECTIONPLACE ADS PLUS WOVEN GEOTEXTILE (CENTERED ON INSERTA-TEE INLET) OVER BEDDING STONE FOR SCOUR PROTECTION AT SIDE INLET CONNECTIONS, GEOTEXTILE MUST EXTEND 6” (150 mm) PAST CHAMBER FOOT 72 ,77ऺ"?:=8#0.3ऺ,?ऺ888.892.2694ऺ1:=ऺ?0.394.,7ऺ,9/ऺ ;=:/@.?ऺ491:=8,?4:9ऺ:=ऺA4>4?ऺBBBற>?:=8?0.3ற.:8 SOIL'S REPORT BORING LOG LEGEND SAMPLE TYPE GRAPHICAL SYMBOL SAMPLE DESCRIPTION AUGER SAMPLE COLLECTED FROM AUGER CUTTINGS, NO FIELD MEASUREMENT OF SOIL STRENGTH.(DISTURBED) CORE ROCK CORE SAMPLE:TYPICALLY TAKEN WITH A DIAMOND-TIPPED CORE BARREL. TYPICALLY USED ONLY IN HIGHLY CONSOLIDATED BEDROCK. GRAB SOIL SAMPLE TAKEN WITH NO SPECIALIZED EQUIPMENT, SUCH AS FROM A STOCKPILE OR THE GROUND SURFACE.(DISTURBED) CS CALIFORNIA SAMPLER: 2-1/2 INCH I.D. SPLIT BARREL SAMPLER,LINED WITH 1-INCH HIGH BRASS RINGS. DRIVEN WITH SPT HAMMER.(RELATIVELY UNDISTURBED) NSR NO RECOVERY:THE SAMPLING ATTEMPT DID NOT RESULT IN RECOVERY OF ANY SIGNIFICANT SOIL OR ROCK MATERIAL. SPT STANDARD PENETRATION TEST:SAMPLER IS A 1.4 INCH INSIDE DIAMETER SPLIT BARREL, DRIVEN 18 INCHES WITH THE SPT HAMMER.(DISTURBED) SH SHELBY TUBE:TAKEN WITH A THIN WALL SAMPLE TUBE, PUSHED INTO THE SOIL AND THEN EXTRACTED. (UNDISTURBED) VANE VANE SHEAR TEST:SOIL STRENGTH OBTAINED USING A 4 BLADED SHEAR DEVICE. TYPICALLY USED IN SOFT CLAYS-NO SAMPLE RECOVERED. COLUMN DESCRIPTIONS DEPTH:Distance in feet below the ground surface. SAMPLE:Sample Type as depicted above. BLOW COUNT:Number of blows required to advance the sampler 12 inches using a 140 lb hammer with a 30-inch drop.50/3”indicates penetration refusal (>50 blows) at 3 inches.WH indicates that the weight of the hammer was sufficient to push the sampler 6 inches or more. POCKET PEN.:Approximate shear strength of a cohesive soil sample as measured by pocket penetrometer. GRAPHIC LOG:Graphic Soil Symbol as depicted on the following page. DRY DENSITY:Dry density of an undisturbed or relatively undisturbed sample in lbs/ft3. MOISTURE CONTENT: Moisture content of a soil sample, expressed as a percentage of the dry weight. LIQUID LIMIT:The moisture content above which a soil behaves as a liquid. PLASTIC LIMIT:The moisture content above which a soil behaves as a plastic. PASSING #200 SIEVE:The percentage of the sample finer than the #200 standard sieve. UNCONFINED SHEAR:The shear strength of a cohesive soil sample,as measured in the unconfined state. SM SP COARSE GRAINED SOILS SW TYPICAL DESCRIPTIONS WELL-GRADED GRAVELS, GRAVEL - SAND MIXTURES, LITTLE OR NO FINES SILTY GRAVELS, GRAVEL - SAND - SILT MIXTURES LETTERGRAPH POORLY-GRADED GRAVELS, GRAVEL - SAND MIXTURES, LITTLE OR NO FINES GC GM GP GW POORLY-GRADED SANDS, GRAVELLY SAND, LITTLE OR NO FINES SILTS AND CLAYS MORE THAN 50% OF MATERIAL IS LARGER THAN NO. 200 SIEVE SIZE MORE THAN 50% OF MATERIAL IS SMALLER THAN NO. 200 SIEVE SIZE MORE THAN 50% OF COARSE FRACTION PASSING ON NO. 4 SIEVE MORE THAN 50% OF COARSE FRACTION RETAINED ON NO. 4 SIEVE CLAYEY GRAVELS, GRAVEL - SAND - CLAY MIXTURES FINE GRAINED SOILS SYMBOLSMAJOR DIVISIONS SOIL CLASSIFICATION CHART PT OH CH MH OL CL ML CLEAN SANDS SC SILTY SANDS, SAND - SILT MIXTURES CLAYEY SANDS, SAND - CLAY MIXTURES INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE SAND OR SILTY SOILS INORGANIC CLAYS OF HIGH PLASTICITY ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS SILTS AND CLAYS GRAVELS WITH FINES SAND AND SANDY SOILS (LITTLE OR NO FINES) SANDS WITH FINES LIQUID LIMIT LESS THAN 50 LIQUID LIMIT GREATER THAN 50 HIGHLY ORGANIC SOILS NOTE: DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE SOIL CLASSIFICATIONS GRAVEL AND GRAVELLY SOILS (APPRECIABLE AMOUNT OF FINES) (APPRECIABLE AMOUNT OF FINES) (LITTLE OR NO FINES) WELL-GRADED SANDS, GRAVELLY SANDS, LITTLE OR NO FINES CLEAN GRAVELS INFILTRATION CALCULATIONS Project Name Project Location Project Number Engineer Test Hole Radius 4 (in) Test Depth 10.1 (ft) Infiltration Test Hole I-1 In t e r v a l Nu m b e r Ti m e Tim e In t e r v a l (m i n ) Wa t e r De p t h ( f t ) Ch a n g e i n Wa t e r Le v e l ( f t ) Av e r a g e He a d He i g h t ( f t ) In f i l t r a t i o n Ra t e Q (i n / h r ) Initial 8:30 AM 8.10 Final 8:45 AM 10.10 Initial 8:45 AM 8.10 Final 9:04 AM 10.10 Initial 9:04 AM 8.10 Final 9:14 AM 9.70 Initial 9:14 AM 8.10 Final 9:24 AM 9.65 Initial 9:24 AM 8.10 Final 9:34 AM 9.70 Initial 9:34 AM 8.10 Final 9:44 AM 9.70 Initial 9:44 AM 8.10 Final 9:54 AM 9.70 Initial 9:54 AM 8.10 Final 10:04 AM 9.70 Per County Standards, Infiltration Rate calculated as follows: Where: Q = Infiltration Rate (in inches per hour) =Change in Height (Water Level) over the time interval r = Test Hole (Borehole) Radius =Time Interval Havg = Average Head Height over the time interval 8 10.0 1.60 1.20 14.05 5 10.0 1.60 1.20 2.00 1.00 Oscar Sandoval 13.06 3 10.0 1.60 1.20 14.05 2 18.8 2.00 1.00 10.97 Proposed Commercial/Industrial Building Fontana, CA 19G241-2 1 15.7 7 10.0 1.60 1.20 14.05 14.05 6 10.0 1.60 1.20 14.05 4 10.0 1.55 1.23 13.37 )2Ht(r H(60r)Q avg 19G241-2 Infiltration Test No. I-1 INFILTRATION CALCULATIONS Project Name Project Location Project Number Engineer Test Hole Radius 4 (in) Test Depth 11.9 (ft) Infiltration Test Hole I-2 In t e r v a l Nu m b e r Ti m e Tim e In t e r v a l (m i n ) Wa t e r De p t h ( f t ) Ch a n g e i n Wa t e r Le v e l ( f t ) Av e r a g e He a d He i g h t ( f t ) In f i l t r a t i o n Ra t e Q (i n / h r ) Initial 10:20 AM 10.00 Final 10:30 AM 11.90 Initial 10:30 AM 10.00 Final 10:42 AM 11.90 Initial 10:42 AM 10.00 Final 10:52 AM 11.70 Initial 10:52 AM 10.00 Final 11:02 AM 11.65 Initial 11:02 AM 10.00 Final 11:12 AM 11.65 Initial 11:12 AM 10.00 Final 11:22 AM 11.63 Initial 11:22 AM 10.00 Final 11:32 AM 11.60 Initial 11:32 AM 10.00 Final 11:42 AM 11.60 Per County Standards, Infiltration Rate calculated as follows: Where: Q = Infiltration Rate (in inches per hour) =Change in Height (Water Level) over the time interval r = Test Hole (Borehole) Radius =Time Interval Havg = Average Head Height over the time interval 8 10.0 1.65 1.08 15.95 6 7 1.10 15.16 4 10.0 1.60 1.10 15.16 10.0 1.60 10.0 1.63 1.09 15.63 Proposed Commercial/Industrial Building Fontana, CA 19G241-2 Oscar Sandoval 12.5 1.90 1 5 10.0 1.65 1.08 15.95 10.0 1.90 0.95 20.42 3 10.0 1.70 1.05 16.77 2 0.95 16.33 )2Ht(r H(60r)Q avg 19G241-2 Infiltration Test No. I-2 Sample Description I-1 @ 8½ to 10 feet Soil Classification Gray Brown fine to coarse Sand, trace to little Silt, trace fine Gravel Proposed Commercial/Industrial Building Fontana, CA Project No. 19G241-2 PLATE C-1 0 10 20 30 40 50 60 70 80 90 100 0.0010.010.1110100 Pe r c e n t P a s s i n g b y W e i g h t Grain Size in Millimeters Grain Size Distribution Sieve Analysis Hydrometer Analysis US Standard Sieve Sizes Coarse Gravel Fine Gravel Crs. Sand Med. Sand Fine Sand Fines (Silt and Clay) 2 1 3/4 1/2 3/8 1/4 #4 #8 #10 #16 #20 #30 #40 #50 #100 #200 Sample Description I-2 @ 10½ to 12 feet Soil Classification Gray Brown Gravelly fine to coarse Sand, little Silt Proposed Commercial/Industrial Building Fontana, CA Project No. 19G241-2 PLATE C-2 0 10 20 30 40 50 60 70 80 90 100 0.0010.010.1110100 Pe r c e n t P a s s i n g b y W e i g h t Grain Size in Millimeters Grain Size Distribution Sieve Analysis Hydrometer Analysis US Standard Sieve Sizes Coarse Gravel Fine Gravel Crs. Sand Med. Sand Fine Sand Fines (Silt and Clay) 2 1 3/4 1/2 3/8 1/4 #4 #8 #10 #16 #20 #30 #40 #50 #100 #200 Water Quality Management Plan (WQMP) Appendix C-1 Appendix C Education Materials, BMP Fact Sheets Stormwater Pollution Prevention Best Management Practices for Homeowner’s Associations, Property Managers and Property Owners Your Guide To Maintaining Water Friendly Standards In Your Community sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa Table of Contents Commercial Trash Enclosures 1 Hazardous Waste 2 Working Outdoors & Handling Spills 4 Commercial Landscape 5 Sidewalk, Plaza, Entry Monument & Fountain Maintenance 6 Equipment Maintenance & Repair 10 Pool Maintenance 14 Paint 16 Vehicle Maintenance 17 Pet Waste Disposal 18 Get In Touch With Us Online 19 In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 1 COMMERCIAL TRASH ENCLOSURES In San Bernardino County, stormwater pollution is caused by food waste, landscape waste, chemicals and other debris that are washed into storm drains and end up in our waterways - untreated! You can be part of the solution by maintaining a water-friendly trash enclosure. To report illegal dumping (877-WASTE18) or to find a household hazardous waste facility (800-OILY CAT): sbcountystormwater.org TO KEEP OUR WATERWAYS CLEAN FOLLOW THESE REQUIREMENTS Trash enclosures, such as those found in commercial and apartment complexes, typically contain materials that are intended to find their way to a landfill or a recycling facility. These materials are NOT meant to go into our local lakes and rivers. THANK YOU FOR HELPING TO KEEP SAN BERNARDINO COUNTY CLEAN AND HEALTHY! PROTECT WATER QUALITY BY FOLLOWING THESE SIMPLE STEPS • Paint • Grease, fats and used oils • Batteries, electronics and fluorescent lights KEEP TOXICS OUTCLOSE THE LID Prevent rain from entering the bin in order to avoid leakage of polluted water runoff PUT TRASH INSIDE Place trash inside the bin (preferably in sealed bags) COMMERCIAL TRASH ENCLOSURES SOME ADDITIONAL GUIDELINES, INCLUDE SWEEP FREQUENTLY Sweep trash enclosure areas frequently, instead of hosing them down, to prevent polluted water from flowing into the streets and storm drains. FIX LEAKS Address trash bin leaks immediately by using dry clean up methods and report to your waste hauler to receive a replacement. CONSTRUCT ROOF Construct a solid cover roof over the existing trash enclosure structure to prevent rainwater from coming into contact with trash and garbage. Check with your local City/County for Building Codes. Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 2 HAZARDOUS WASTE Waste Type and Cost There is a small handling fee involved in the collection of hazardous waste from your business. Disposal costs depend on the type of waste. Aerosols $1.29/lb. Automobile motor oil $.73/gal. Anti-freeze $1.57/gal. Contaminated oil $4.48/gal. Car batteries $.62/ea. Corrosive liquids, solids $2.80/lb. Flammable solids, liquids $1.57/lb. Latex Paint $.73/lb. Mercury $10.08/lb. NiCad/Alkaline Batteries $2.13/lb. Oil Base Paints $1.00/lb. Oil Filters $.56/ea. Oxidizers $9.63/lb. PCB Ballasts $5.94/lb. Pesticides (most) $2.91/lb. Photoxer, developer $4.31/gal. Television & Monitors $11.20/ea. Additional Handling $138.00/hr. *Rates subject to change without notice* WE CANNOT ACCEPT Radioactives Water reactives Explosives Compressed gas cylinders Medical or biohazardous waste Asbestos Remediation wastes CESQG PROGRAM Conditionally Exempt Small Quantity Generator WHAT IS A CESQG? Businesses that generate 27 gallons or 220 lbs. of hazardous waste, or 2.2 lbs. of extremely hazardous waste per month are called “Conditionally Exempt Small Quantity Generators,” or CESQGs. San Bernardino County Household Hazardous Program provides waste management services to CESQG businesses. The most common CESQGs in San Bernardino County are painters, print shops, auto shops, builders, agricultural operators and property managers, but there are many others. When you call, be ready to describe the types and amounts of waste your business generates in a typical month. If you generate hazardous waste on a regular basis, you must: • Register with San Bernardino County Fire Department (909)386-8400 as a hazardous waste generator. • To obtain an EPA ID# and application form from the State visit www.dtsc.ca.gov. • Manage hazardous waste in accordance with all applicable local, state and federal laws and regulations. HOW DO I GET SERVICE? To arrange an appointment for the CESQG Program, call 1-800-OILY CAT or 909-382-5401. Be ready to describe the type and amount of hazardous waste your business is ready to dispose of, and the types and size(s) of containers that the waste is in. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 3 HAZARDOUS WASTE WHY IS THE FIRE DEPARTMENT COLLECTING HAZARDOUS WASTE? Small Quantity Generators often have difficulty disposing of small quantities of hazardous waste. Hazardous waste companies usually have a minimum amount of waste that they will pick up, or charge a minimum fee for service. Typically, the minimum fee exceeds the cost of disposal for the hazardous waste. This leaves the small quantity generator in a difficult situation. Some respond by storing hazardous waste until it becomes economical for the hazardous waste transporter to pick it up, putting the business out of compliance by exceeding regulatory accumulation time limits. Other businesses simply store their hazardous wastes indefinitely, creating an unsafe work environment and exceeding accumulation time limits. Yet other businesses attempt to illegally dispose of their waste at household hazardous waste collection facilities. These facilities are not legally permitted to accept commercial wastes, nor are prepared to provide legal documentation for commercial hazardous waste disposal. In answer to the problems identified above, the San Bernardino County Fire Department Household Hazardous Program instituted the Conditionally Exempt Small Quantity Generator Program. PAYMENT FOR SERVICES The CESQG Program will prepare an invoice for your business at the time of service. You can pay at the time of service with cash or a check, or you can mail your payment to the Fire Department within 30 days. Please note that we do not accept credit card payments. The preferred method of payment is to handle payment at time of service. Additional charges may apply for accounts not paid within 30 days. ARE THERE ANY OTHER WAYS THAT I CAN SAVE MONEY ON HAZARDOUS WASTE DISPOSAL? Yes! First, start by reducing the amount of waste that you produce by changing processes or process chemicals, at your business. Next, examine if there is a way that you can recycle your waste back into your processes. Network with similar businesses or trade associations for waste minimization and pollution prevention solutions. WHAT IF YOUR BUSINESS DOES NOT QUALIFY? Call the San Bernardino County Fire Department Field Services Division for assistance with hazardous waste management at 909-386-8400. If you reduce the amount of waste you generate each month to 27 gallons or less, you may qualify in the future. WHAT HAPPENS TO YOUR HAZARDOUS WASTE? Hazardous waste collected by the CESQG Program is transported to a state permitted processing facility in San Bernardino. The waste is further processed at this point and packaged for off-site recycling (oil filters, oil, latex paint, antifreeze, and batteries) or destructive incineration (pesticides, corrosives, flammables, oil based paint). San Bernardino County Fire Department CESQG Program 2824 East “W” Street San Bernardino, CA 92415-0799 Phone: 909-382-5401 Fax: 909-382-5413 www.sbcfire.org/ofm/hhw/HouseholdHazardousWaste.aspx Email: mvangese@sbcfire.org In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho CucamongaRedlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 4 WORKING OUTDOORS & HANDLING SPILLS Clean waterways and the health of your neighborhood is a team effort. Be part of the clean water team, find out more about how to protect water quality in your community at: Las vías fluviales limpias y la salubridad de su barrio se logran gracias al trabajo en equipo. Sea parte del equipo de agua limpia y obtenga más información acerca de cómo proteger la calidad del agua en su comunidad en: sbcountystormwater.org CONTROL | CONTROL Locate the nearest storm drain and ensure nothing can enter or be discharged into it. Ubique el desagüe de aguas pluviales más cercano y asegúrese de que nada pueda ingresar a éste ni descargarse en él. CONTAIN | CONTENER Isolate your area to prevent material from potentially flowing or being blown away. Aísle su área para evitar que el material pueda discurrirse oser llevado por el viento. CAPTURE | CAPTURAR Sweep up debris and place it in the trash. Clean up spills with an absorbent material (e.g. kitty litter) or vacuum with a Wet-Vac and dispose of properly. Recoja los restos y colóquelos en la basura. Limpie los derrames con un material absorbente (como la arena para gatos) o aspírelos con una Wet-Vac (aspiradora de humedad) y deséchelos correctamente. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 5 COMMERCIAL LANDSCAPE In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 6 SIDEWALK, PLAZA, ENTRY MONUMENT & FOUNTAIN MAINTENANCE Pollutants on sidewalks and other pedestrian traffic areas and plazas are typically due to littering and vehicle use. Fountain water containing chlorine and copperbased algaecides is toxic to aquatic life. Proper inspection, cleaning, and repair of pedestrian areas and HOA owned surfaces and structures can reduce pollutant runoff from these areas. Maintaining these areas may involve one or more of the following activities: 1. Surface Cleaning 2. Graffiti Cleaning 3. Sidewalk Repair 4. Controlling Litter 5. Fountain Maintenance POLLUTION PREVENTION: Pollution prevention measures have been considered and incorporated in the model procedures. Implementation of these measures may be more effective and reduce or eliminate the need to implement other more complicated or costly procedures. Possible pollution prevention measures for sidewalk, plaza, and fountain maintenance and cleaning include: • Use dry cleaning methods whenever practical for surface cleaning activities. • Use the least toxic materials available (e.g. water based paints, gels or sprays for graffiti removal). • Once per year, educate HOA staff and tenants on pollution prevention measures. MODEL PROCEDURES: 1. Surface Cleaning Discharges of wash water to the storm water drainage system from cleaning or hosing of impervious surfaces is prohibited. Use dry methods (e.g. sweeping, backpack blowers, vacuuming) wheneverpractical to clean sidewalks and plazas rather than hosing, pressure washing, orsteam cleaning. DO NOT sweep or blow material into curb; use devicesthat contain the materials. If water must be used, block storm drain inlets and contain runoff.Discharge wash water to landscaping or contain and dispose of properly. Sidewalks, Plazas In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 7 SIDEWALK, PLAZA, ENTRY MONUMENT & FOUNTAIN MAINTENANCE Parking facilities should be swept/vacuumed on a regular basis.Establish frequency of public parking lot sweeping based on usageand field observations of waste accumulation. If water must be used, block storm drain inlets and contain runoff. Dischargewash water to landscaping or contain and dispose of properly. Sweep all parking lots at least once before the onset of the wet season. Use absorbents to pick up oil; then dry sweep. Appropriately dispose of spilled materials and absorbents. OPTIONAL: • Consider increasing sweeping frequency based on factors such as trafficvolume, land use, field observations of sediment and trash accumulation,proximity to water courses, etc. 2. Graffiti Cleaning Use high-pressure water, no soap. If water must be used, block storm drain inlets and contain runoff. Discharge wash water to landscaping or contain and dispose of properly. If water must be used, block storm drain inlets and contain runoff. Discharge wash water to landscaping or contain and dispose of properly. If using a biodegradable or other cleaning agent to remove deposits contain and dispose of properly. Avoid graffiti abatement activities during rain events. When graffiti is removed by painting over, implement the procedures under Painting and Paint Removal in the Roads, Streets, and Highway Operation and Maintenance procedure sheet. Protect nearby storm drain inlets prior to removing graffiti from walls,signs, sidewalks, or other structures needing graffiti abatement. Clean up afterwards by sweeping or vacuuming thoroughly, and/or by using absorbent and properly disposing of the absorbent. Parking Areas, Driveways, Drive-thru Building Surfaces, Decks, etc., without loose paint Unpainted Building Surfaces, Wood Decks, etc. Graffiti Removal In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 8 SIDEWALK, PLAZA, ENTRY MONUMENT & FOUNTAIN MAINTENANCE Note that care should be taken when disposing of waste since it may need to bedisposed of as hazardous waste. OPTIONAL: • Consider using a waterless and non-toxic chemical cleaning method for graffitiremoval (e.g. gels or spray compounds). 3. Sidewalk Repair Schedule surface removal activities for dry weather if possible. Avoid creating excess dust when breaking asphalt or concrete. Take measures to protect nearby storm drain inlets prior to breaking up asphaltor concrete (e.g. place hay bales or sand bags around inlets). Clean afterwardsby sweeping up material. Designate an area for clean up and proper disposal of excess materials. Remove and recycle as much of the broken pavement as possible. When making saw cuts in pavement, use as little water as possible. Cover eachstorm drain inlet with filter fabric during the sawing operation and contain theslurry by placing straw bales, sandbags, or gravel dams around the inlets. Afterthe liquid drains shovel or vacuum the slurry, remove from site and dispose ofproperly. Always dry sweep first to clean up tracked dirt. Use a street sweeperor vacuum truck. Do not dump vacuumed liquid in storm drains. Once drysweeping is complete, the area may be hosed down if needed. Discharge washwater to landscaping, pump to the sanitary sewer if permitted to doso or contain and dispose of properly. Avoid mixing excess amounts of fresh concrete or cement mortar on-site.Only mix what is needed for the job. Wash concrete trucks off-site or in designated areas on-site, such that thereis no discharge of concrete wash water into storm drain inlets, open ditches,streets, or other storm water conveyance structures. (See Concrete WasteManagement BMP WM – 8) Surface Removal and Repair Concrete Installation and Repair In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 9 SIDEWALK, PLAZA, ENTRY MONUMENT & FOUNTAIN MAINTENANCE Store dry and wet concrete materials under cover, protected from rainfall andrunoff and away from drainage areas. After job is complete remove temporarystockpiles (asphalt materials, sand, etc.) and other materials as soon as possible. Return leftover materials to the transit mixer. Dispose of small amounts ofexcess concrete, grout, and mortar in the trash. When washing concrete to remove fine particles and expose the aggregate,contain the wash water for proper disposal. Do not wash sweepings from exposed aggregate concrete into the streetor storm drain. Collect and return sweepings to aggregate base stock pile,or dispose in the trash. Protect applications of fresh concrete from rainfall and runoff until the materialhas hardened. 4. Litter Control Enforce anti-litter laws. Provide litter receptacles in busy, high pedestrian traffic areas of thecommunity, at recreational facilities, and at community events. Cover litter receptacles and clean out frequently to prevent leaking/spillage oroverflow. OPTIONAL: • Post “No Littering” signs. 5. Fountain Maintenance Do not use copper-based algaecides. Control algae with chlorine or otheralternatives, such as sodium bromide. Allow chlorine to dissipate for a few days and then recycle/reuse water by drainingit gradually onto a landscaped area. Water must be tested prior to discharge toensure that chlorine is not present (concentration must be less than 0.1 ppm). Contact local agency for approval to drain into sewer or storm drain. Avoid mixing excess amounts of fresh concrete or cement mortar on-site.Only mix what is needed for the job. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 10 EQUIPMENT MAINTENANCE & REPAIR Vehicle or equipment maintenance has the potential to be a significant source of stormwater pollution. Engine repair and service (parts cleaning, spilled fuel, oil, etc.), replacement of fluids, and outdoor equip-ment storage and parking (dripping engines) can all contaminate stormwater. Conducting the following activities in a controlled manner will reduce the potential for stormwater contamination: 1. General Maintenance and Repair 2. Vehicle and Machine Repair 3. Waste Handling/Disposal Related vehicle maintenance activities are covered under the following program headings in this manual: “Vehicle and Equipment Cleaning”, “Vehicle and Equipment Storage”, and “Vehicle Fueling”. POLLUTION PREVENTION: Pollution prevention measures have been considered and incorporated in the model procedures. Implementation of these measures may be more effective and reduce or eliminate the need to implement other more complicated or costly procedures. Possible pollution prevention measures for equipment maintenance and repair include: • Review maintenance activities to verify that they minimize the amount of pollutants discharged toreceiving waters. Keep accurate maintenance logs to evaluate materials removed and improvementsmade. • Switch to non-toxic chemicals for maintenance when possible. • Choose cleaning agents that can be recycled. • Minimize use of solvents. Clean parts without using solvents whenever possible. Recycle used motoroil, diesel oil, and other vehicle fluids and parts whenever possible. • Once per year, educate HOA staff and tenants on pollution prevention measures. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 11 EQUIPMENT MAINTENANCE & REPAIR MODEL PROCEDURES: 1. General Maintenance and Repair Review maintenance activities to verify that they minimize the amountof pollutants discharged to receiving waters. Keep accurate maintenancelogs to evaluate materials removed and improvements made. Regularly inspect vehicles and equipment for leaks. Move activity indoors or cover repair area with a permanent roof if feasible. Minimize contact of stormwater with outside operations through berming thelocal sewering and drainage routing. Place curbs around the immediate boundaries of the process equipment. Clean yard storm drain inlets regularly and stencil them. Avoid hosing down work areas. If work areas are washed and if discharge to thesanitary sewer is allowed, treat water with an appropriate treatment device (e.g.clarifier) before discharging. If discharge to the sanitary sewer is not permitted,pump water to a tank and dispose of properly. Collect leaking or dripping fluids in drip pans or container. Fluids are easier torecycle or dispose of properly if kept separate. Keep a drip pan under the vehicle while you unclip hoses, unscrew filters, anydischarge of or remove other parts. Place a drip pan under any vehicle thatmight leak while you work on it to keep splatters or drips off the shop floor. Educate employees on proper handling and disposal of engine fluids. Promptly transfer used fluids to the proper waste or recycling drums. Don’tleave full drip pans or other open containers lying around. Do not pour liquid waste to floor drains, sinks, outdoor storm drain inlets, orother storm drains or sewer connections. Post signs at sinks and stencil outdoor storm drain inlets. 2.Vehicle Repair Perform vehicle fluid removal or changing inside of a building or in a containedcovered area, where feasible, to prevent the run-on of stormwater and therunoff of spills. Regularly inspect vehicles and equipment for leaks, and repair as needed. General Guidelines Good Housekeeping General Guidelines Note: Permission must be obtained for any discharge of wash water to the sanitary sewer from the local sewering agency.  In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 12 EQUIPMENT MAINTENANCE & REPAIR Use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids. Immediately drain all fluids from wrecked vehicles. Ensure that the drain pan ordrip pan is large enough to contain drained fluids (e.g. larger pans are needed to contain antifreeze, which may gush from some vehicles). Promptly transfer used fluids to the proper waste or recycling drums. Don’tleave full drip pans or other open containers lying around. Recycle used motor oil, diesel oil, and other vehicle fluids and parts whenever possible. Oil filters disposed of in trash cans or dumpsters can leak oil. Place the oilfilter in a funnel over a waste oil recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recyclerabout recycling oil filters. Store cracked batteries in a non-leaking secondary container and dispose of properly at recycling facilities or at County hazardous waste disposal site. Use absorbent materials on small spills. Remove the absorbent materials promptly and dispose of properly. Place a stockpile of spill cleanup materials where it will be readily accessible. Sweep floor using dry absorbent material. 3. Machine Repair Keep equipment clean; don’t allow excessive build-up of oil or grease. Minimize use of solvents. Use secondary containment, such as a drain pan or drop cloth, to catch spills orleaks when removing or changing fluids. Perform major equipment repairs at the corporation yard, when practical. Following good housekeeping measures in Vehicle Repair section. 4.Waste Handling/Disposal Prevent spills and drips of solvents and cleansers to the shop floor. Do liquid cleaning at a centralized station so the solvents and residues stay in one area. Recycle liquid cleaners when feasible. Vehicle Leak and Spill Control Waste Reduction In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 13 EQUIPMENT MAINTENANCE & REPAIR Locate drip pans, drain boards, and drying racks to direct drips back into a solvent sink or fluid holding tank for reuse. OPTIONAL: • If possible, eliminate or reduce the amount of hazardous materials and waste by substituting non-hazardous or less hazardous material: -Use non-caustic detergents instead of caustic cleaning for parts cleaning. -Use a water-based cleaning service and have tank cleaned. Use detergent-based or water-based cleaning systems in place of organic solvent degreasers. -Replace chlorinated organic solvents with non-chlorinated solvents. Non-chlorinated solvents like kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check list of active ingredients to see whether it contains chlorinated solvents. -Choose cleaning agents that can be recycled. OPTIONAL: • Separate wastes for easier recycling. Keep hazardous and non-hazardous wastes separate, do not mix used oil and solvents, and keep chlorinated solvents separate from non-chlorinated solvents. • Label and track the recycling of waste material (e.g. used oil, spent solvents, batteries). • Purchase recycled products to support the market for recycled materials. LIMITATIONS: Space and time limitations may preclude all work being conducted indoors. It may not be possible to contain and clean up spills from vehicles/equipment brought on-site after working hours. Dry floor cleaning methods may not be sufficient for some spills – see spill prevention and control procedures sheet. Identification of engine leaks may require some use of solvents. Recycling In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 14 POOL MAINTENANCE Pool chemicals and filter solids, when discharged to the City streets, gutters or storm drans, DO NOT GET TREATED before reaching the Santa Ana River. Chlorine, acid cleaning chemicals and metal-based algaecides used in pools can kill beneficial organisms in the food chain and pollute our drinking water. When emptying your swimming pool, spa or fountain, please use one of the following best management practices to prevent water pollution: •Reuse the water as landscape irrigation • Empty the water into the sewer between midnight and 6:00 am • Remove solids and floating debris and dispose of in the trash, de-chlorinate the water to a chlorine residual = 0, wait 24 hours, then discharge the water to the street or storm drain •Try not to use metal-based algaecides (i.e. copper sulfate) in your pool or spa. If you have, empty your pool or spa into the sewer. Prior to discharging pool water into the sanitary sewer system, contact your local agency. • If the pool contains algae and mosquito larvae, discharge the water to the sewer When acid cleaning or other chemical cleaning: • Neutralize the pool water to pH of 6.5 to 8.5, then discharge to the sewer For swimming pool and spa filter backwash: • Dispose of solids into trash bag, then wash filter into a landscape area • Settle, dispose of solids in trash and discharge water to the sewer, never to the storm drain For Residents The following is a preview of the information we have available to residents. For more fact sheets, visit sbcountystormwater.org DO YOU HAVE THE FOLLOWINGITEMS IN YOUR HOME? Big Bear Lake Chino Fontana Ontario Rancho Cucamonga Redlands Rialto San Bernardino Upland SAN BERNARDINO COUNTY STORMWATER PROGRAMWHERE WATERMEETS COMMUNITY *No business waste accepted. Must be a San Bernardino County resident. Automotive Fluids Batteries Cooking Oil Fertilizers & Pesticides Fluorescent Bulbs Household Cleaners Medicine Motor Oil & Filters Paint Products Pool Chemicals PROTECT YOUR COMMUNITY! Take your toxic products to a local waste collection center: Find locations and a full list of items, visit tootoxictotrash.com Household Hazardous Waste Center Locations In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 16 PAINT When painting your home, protect your family and community. • • • WEDIDIT OUR SELVES ANDWE DIDIT RIGHT PAINTS that are water-based are less toxic and should be used whenever possible. BRUSHES with water-based paint should be washed in the sink. Those with oil-based paint should be cleaned with paint thinner. SAFELY dispose of unwanted paint and paint thinner. The County of San Bernardino offers 9 HHW Centers that accept paint and other household hazardous waste from residents FREE of charge. For a list of acceptable materials, location information, and hours of operation visit TooToxicToTrash.com. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho Cucamonga Redlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 17 VEHICLE MAINTENANCE Oil, grease, anti-freeze and other toxic automotive fluids often make their way into the San Bernardino County storm drain system, and do not get treated before reaching the Santa Ana River. This pollutes our drinking water and contaminates waterways, making them unsafe for people and wildlife. Follow these best management practices to prevent pollution and protect public health. Cleaning Auto Parts Scrape parts with a wire brush or use a bake oven rather than liquid cleaners. Arrange drip pans, drying racks and drain boards so that fluids are directed back into the parts washer or the fluid holding tank. Do not wash parts or equipment in a sink, parking lot, driveway or street. Storing Hazardous Waste Keep your liquid waste segregated. Many fluids can be recycled via hazardous waste disposal companies if they are not mixed. Store all materials under cover with spill containment or inside to prevent contamination of rainwater runoff. Preventing Leaks and Spills Conduct all vehicle maintenance inside of a garage. Place drip pans underneath vehicle to capture fluids. Use absorbent materials instead of water to clean work areas. Cleaning Spills Use dry methods for spill cleanup (sweeping, absorbent materials). To report accidental spills into the street or storm drain call (877) WASTE18 or 911. Proper Disposal of Hazardous Waste Dispose of household hazardous waste by taking it to your nearest household hazardous waste center. For more information, call 1-800-OILY CAT or check out TooToxicToTrash.com. In the event of a spill or discharge to a storm drain or waterway, contact San Bernardino County Stormwater immediately: (877) WASTE18 | sbcountystormwater.org/report sbcountystormwater.org Big Bear • Chino • Chino Hills • Colton • Fontana • Grand Terrace • Highland • Loma Linda • Montclair • Ontario • Rancho CucamongRedlands • Rialto • San Bernardino • San Bernardino County • San Bernardino County Flood Control District • Upland • Yucaipa 18 PET WASTE DISPOSAL SAN BERNARDINO COUNTY STORMWATER PROGRAMWHERE WATERMEETS COMMUNITY Thanks for being a responsible pet owner and contributing to a beautiful San Bernardino County. FOR YOU AND YOUR FRIEND FREEGET A DOGGIE WASTE BAG Visit FreeDoggieBags.com Request a FREE canister from us Send a FREE canister to a friend Use your canister to pick up after your dog anytime, anyplace! Step 1 Step 2 Step 3 Step 4 Thanks for being a responsible pet owner and contributing to a beautiful San Bernardino County. FOR YOU AND YOUR FRIENDFREEGET A DOGGIE WASTE BAG Visit FreeDoggieBags.com Request a FREE canister from us Send a FREE canister to a friend Use your canister to pick up after your dog anytime, anyplace! Step 1 Step 2 Step 3 Step 4 SAN BERNARDINO COUNTY STORMWATER PROGRAMWHERE WATERMEETS COMMUNITY Get In Touch With Us Online! » Website » eUpdates » Facebook » YouTube » Report Pollution Violations » Email sbcountystormwater.org sbcountystormwater.org/newsletter facebook.com/sbcountystormwater youtube.com/sbcountystormwater sbcountystormwater.org/report info@sbcountystormwater.org Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 1 of 10 Industrial and Commercial www.casqa.org Description Many activities that occur at an industrial or commercial site have the potential to cause accidental spills. Preparation for accidental spills, with proper training and reporting systems implemented, can minimize the discharge of pollutants to the environment. Spills and leaks are one of the largest contributors of stormwater pollutants. Spill prevention and control plans are applicable to any site at which hazardous materials are stored or used. An effective plan should have spill prevention and response procedures that identify hazardous material storage areas, specify material handling procedures, describe spill response procedures, and provide locations of spill clean-up equipment and materials. The plan should take steps to identify and characterize potential spills, eliminate and reduce spill potential, respond to spills when they occur in an effort to prevent pollutants from entering the stormwater drainage system, and train personnel to prevent and control future spills. An adequate supply of spill clean- up materials must be maintained onsite. Approach General Pollution Prevention Protocols  Develop procedures to prevent/mitigate spills to storm drain systems.  Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures.  Establish procedures and/or controls to minimize spills and leaks. The procedures should address:  Description of the facility, owner and address, activities, chemicals, and quantities present; Objectives  Cover  Contain  Educate  Reduce/Minimize  Product Substitution Targeted Constituents Sediment Nutrients Trash Metals  Bacteria Oil and Grease  Organics  Minimum BMPs Covered Good Housekeeping Preventative Maintenance Spill and Leak Prevention and Response  Material Handling & Waste Management Erosion and Sediment Controls Employee Training Program  Quality Assurance Record Keeping  Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 2 of 10 Industrial and Commercial www.casqa.org  Facility map of the locations of industrial materials;  Notification and evacuation procedures;  Cleanup instructions;  Identification of responsible departments; and  Identify key spill response personnel.  Recycle, reclaim, or reuse materials whenever possible. This will reduce the amount of process materials that are brought into the facility. Spill and Leak Prevention and Response Spill Prevention  Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures.  If illegal dumping is observed at the facility:  Post “No Dumping” signs with a phone number for reporting illegal dumping and disposal. Signs should also indicate fines and penalties applicable for illegal dumping.  Landscaping and beautification efforts may also discourage illegal dumping.  Bright lighting and/or entrance barriers may also be needed to discourage illegal dumping.  Store and contain liquid materials in such a manner that if the container is ruptured, the contents will not discharge, flow, or be washed into the storm drainage system, surface waters, or groundwater.  If the liquid is oil, gas, or other material that separates from and floats on water, install a spill control device (such as a tee section) in the catch basins that collects runoff from the storage tank area. Preventative Maintenance  Place drip pans or absorbent materials beneath all mounted taps, and at all potential drip and spill locations during filling and unloading of tanks. Any collected liquids or soiled absorbent materials must be reused/recycled or properly disposed.  Store and maintain appropriate spill cleanup materials in a location known to all near the tank storage area; and ensure that employees are familiar with the site’s spill control plan and/or proper spill cleanup procedures. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 3 of 10 Industrial and Commercial www.casqa.org  Sweep and clean the storage area monthly if it is paved, do not hose down the area to a storm drain.  Check tanks (and any containment sumps) daily for leaks and spills. Replace tanks that are leaking, corroded, or otherwise deteriorating with tanks in good condition. Collect all spilled liquids and properly dispose of them.  Label all containers according to their contents (e.g., solvent, gasoline).  Label hazardous substances regarding the potential hazard (corrosive, radioactive, flammable, explosive, poisonous).  Prominently display required labels on transported hazardous and toxic materials (per US DOT regulations).  Identify key spill response personnel. Spill Response  Clean up leaks and spills immediately.  Place a stockpile of spill cleanup materials where it will be readily accessible (e.g., near storage and maintenance areas).  On paved surfaces, clean up spills with as little water as possible.  Use a rag for small spills, a damp mop for general cleanup, and absorbent material for larger spills.  If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to a certified laundry (rags) or disposed of as hazardous waste.  If possible use physical methods for the cleanup of dry chemicals (e.g., brooms, shovels, sweepers, or vacuums).  Never hose down or bury dry material spills. Sweep up the material and dispose of properly.  Chemical cleanups of material can be achieved with the use of adsorbents, gels, and foams. Use adsorbent materials on small spills rather than hosing down the spill. Remove the adsorbent materials promptly and dispose of properly.  For larger spills, a private spill cleanup company or Hazmat team may be necessary. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 4 of 10 Industrial and Commercial www.casqa.org Reporting  Report spills that pose an immediate threat to human health or the environment to the Regional Water Quality Control Board or local authority as location regulations dictate.  Federal regulations require that any oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hour).  Report spills to 911 for dispatch and clean-up assistance when needed. Do not contact fire agencies directly.  Establish a system for tracking incidents. The system should be designed to identify the following:  Types and quantities (in some cases) of wastes;  Patterns in time of occurrence (time of day/night, month, or year);  Mode of dumping (abandoned containers, “midnight dumping” from moving vehicles, direct dumping of materials, accidents/spills);  Clean-up procedures; and  Responsible parties. Employee Training Program  Educate employees about spill prevention and cleanup.  Well-trained employees can reduce human errors that lead to accidental releases or spills:  The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur; and  Employees should be familiar with the Spill Prevention Control and Countermeasure Plan.  Employees should be educated about aboveground storage tank requirements. Employees responsible for aboveground storage tanks and liquid transfers should be thoroughly familiar with the Spill Prevention Control and Countermeasure Plan and the plan should be readily available.  Train employees to recognize and report illegal dumping incidents. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 5 of 10 Industrial and Commercial www.casqa.org Other Considerations (Limitations and Regulations)  State regulations exist for facilities with a storage capacity of 10,000 gallons or more of petroleum to prepare a Spill Prevention Control and Countermeasure (SPCC) Plan (Health & Safety Code Chapter 6.67).  State regulations also exist for storage of hazardous materials (Health & Safety Code Chapter 6.95), including the preparation of area and business plans for emergency response to the releases or threatened releases.  Consider requiring smaller secondary containment areas (less than 200 sq. ft.) to be connected to the sanitary sewer, prohibiting any hard connections to the storm drain. Requirements Costs (including capital and operation & maintenance)  Will vary depending on the size of the facility and the necessary controls.  Prevention of leaks and spills is inexpensive. Treatment and/or disposal of contaminated soil or water can be quite expensive. Maintenance (including administrative and staffing)  Develop spill prevention and control plan, provide and document training, conduct inspections of material storage areas, and supply spill kits.  Extra time is needed to properly handle and dispose of spills, which results in increased labor costs. Supplemental Information Further Detail of the BMP Reporting Record keeping and internal reporting represent good operating practices because they can increase the efficiency of the facility and the effectiveness of BMPs. A good record keeping system helps the facility minimize incident recurrence, correctly respond with appropriate cleanup activities, and comply with legal requirements. A record keeping and reporting system should be set up for documenting spills, leaks, and other discharges, including discharges of hazardous substances in reportable quantities. Incident records describe the quality and quantity of non-stormwater discharges to the storm sewer. These records should contain the following information:  Date and time of the incident;  Weather conditions;  Duration of the spill/leak/discharge; Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 6 of 10 Industrial and Commercial www.casqa.org  Cause of the spill/leak/discharge;  Response procedures implemented;  Persons notified; and  Environmental problems associated with the spill/leak/discharge. Separate record keeping systems should be established to document housekeeping and preventive maintenance inspections, and training activities. All housekeeping and preventive maintenance inspections should be documented. Inspection documentation should contain the following information:  Date and time the inspection was performed;  Name of the inspector;  Items inspected;  Problems noted;  Corrective action required; and  Date corrective action was taken. Other means to document and record inspection results are field notes, timed and dated photographs, videotapes, and drawings and maps. Aboveground Tank Leak and Spill Control Accidental releases of materials from aboveground liquid storage tanks present the potential for contaminating stormwater with many different pollutants. Materials spilled, leaked, or lost from tanks may accumulate in soils or on impervious surfaces and be carried away by stormwater runoff. The most common causes of unintentional releases are:  Installation problems;  Failure of piping systems (pipes, pumps, flanges, couplings, hoses, and valves);  External corrosion and structural failure;  Spills and overfills due to operator error; and  Leaks during pumping of liquids or gases from truck or rail car to a storage tank or vice versa. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 7 of 10 Industrial and Commercial www.casqa.org Storage of reactive, ignitable, or flammable liquids should comply with the Uniform Fire Code and the National Electric Code. Practices listed below should be employed to enhance the code requirements:  Tanks should be placed in a designated area.  Tanks located in areas where firearms are discharged should be encapsulated in concrete or the equivalent.  Designated areas should be impervious and paved with Portland cement concrete, free of cracks and gaps, in order to contain leaks and spills.  Liquid materials should be stored in UL approved double walled tanks or surrounded by a curb or dike to provide the volume to contain 10 percent of the volume of all of the containers or 110 percent of the volume of the largest container, whichever is greater. The area inside the curb should slope to a drain.  For used oil or dangerous waste, a dead-end sump should be installed in the drain.  All other liquids should be drained to the sanitary sewer if available. The drain must have a positive control such as a lock, valve, or plug to prevent release of contaminated liquids.  Accumulated stormwater in petroleum storage areas should be passed through an oil/water separator. Maintenance is critical to preventing leaks and spills. Conduct routine inspections and:  Check for external corrosion and structural failure.  Check for spills and overfills due to operator error.  Check for failure of piping system (pipes, pumps, flanges, coupling, hoses, and valves).  Check for leaks or spills during pumping of liquids or gases from truck or rail car to a storage facility or vice versa.  Visually inspect new tank or container installation for loose fittings, poor welding, and improper or poorly fitted gaskets.  Inspect tank foundations, connections, coatings, and tank walls and piping system. Look for corrosion, leaks, cracks, scratches, and other physical damage that may weaken the tank or container system.  Frequently relocate accumulated stormwater during the wet season. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 8 of 10 Industrial and Commercial www.casqa.org  Periodically conduct integrity testing by a qualified professional. Vehicle Leak and Spill Control Major spills on roadways and other public areas are generally handled by highly trained Hazmat teams from local fire departments or environmental health departments. The measures listed below pertain to leaks and smaller spills at vehicle maintenance shops. In addition to implementing the spill prevention, control, and clean up practices above, use the following measures related to specific activities: Vehicle and Equipment Maintenance  Perform all vehicle fluid removal or changing inside or under cover to prevent the run-on of stormwater and the runoff of spills.  Regularly inspect vehicles and equipment for leaks, and repair immediately.  Check incoming vehicles and equipment (including delivery trucks, and employee and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite.  Always use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks when removing or changing fluids.  Immediately drain all fluids from wrecked vehicles.  Store wrecked vehicles or damaged equipment under cover.  Place drip pans or absorbent materials under heavy equipment when not in use.  Use absorbent materials on small spills rather than hosing down the spill.  Remove the adsorbent materials promptly and dispose of properly.  Promptly transfer used fluids to the proper waste or recycling drums. Don’t leave full drip pans or other open containers lying around.  Oil filters disposed of in trashcans or dumpsters can leak oil and contaminate stormwater. Place the oil filter in a funnel over a waste oil recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters.  Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries, even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 9 of 10 Industrial and Commercial www.casqa.org Vehicle and Equipment Fueling  Design the fueling area to prevent the run-on of stormwater and the runoff of spills: Cover fueling area if possible. Use a perimeter drain or slope pavement inward with drainage to a sump. Pave fueling area with concrete rather than asphalt.  If dead-end sump is not used to collect spills, install an oil/water separator.  Install vapor recovery nozzles to help control drips as well as air pollution.  Discourage “topping-off’ of fuel tanks.  Use secondary containment when transferring fuel from the tank truck to the fuel tank.  Use absorbent materials on small spills and general cleaning rather than hosing down the area. Remove the absorbent materials promptly.  Carry out all Federal and State requirements regarding underground storage tanks, or install above ground tanks.  Do not use mobile fueling of mobile industrial equipment around the facility; rather, transport the equipment to designated fueling areas.  Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date.  Train employees in proper fueling and cleanup procedures. Industrial Spill Prevention Response For the purposes of developing a spill prevention and response program to meet the stormwater regulations, facility managers should use information provided in this fact sheet and the spill prevention/response portions of the fact sheets in this handbook, for specific activities. The program should:  Integrate with existing emergency response/hazardous materials programs (e.g., Fire Department).  Develop procedures to prevent/mitigate spills to storm drain systems.  Identify responsible departments. Spill Prevention, Control & Cleanup SC-11 September 2014 California Stormwater BMP Handbook 10 of 10 Industrial and Commercial www.casqa.org  Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures.  Address spills at municipal facilities, as well as public areas.  Provide training concerning spill prevention, response and cleanup to all appropriate personnel. References and Resources California’s Nonpoint Source Program Plan. http://www.swrcb.ca.gov/nps/index.html. Clark County Storm Water Pollution Control Manual. Available online at: http://www.co.clark.wa.us/pubworks/bmpman.pdf. King County Storm Water Pollution Control Manual. Available online at: http://dnr.metrokc.gov/wlr/dss/spcm.htm. Orange County Stormwater Program, Best Management Practices for Industrial/Commercial Business Activities. Available online at: http://ocwatersheds.com/documents/bmp/industrialcommercialbusinessesactivities Santa Clara Valley Urban Runoff Pollution Prevention Program. http://www.scvurppp.org. The Stormwater Managers Resource Center. http://www.stormwatercenter.net/. Parking Area Maintenance SC-43 September 2014 California Stormwater BMP Handbook 1 of 5 Industrial and Commercial www.casqa.org Description Parking lots can contribute a number of substances, such as trash, suspended solids, hydrocarbons, oil and grease, and heavy metals that can enter receiving waters through stormwater runoff or non-stormwater discharges. The protocols in this fact sheet are intended to prevent or reduce the discharge of pollutants from parking areas and include using good housekeeping practices, following appropriate cleaning BMPs, and training employees. BMPs for other outdoor areas on site (loading/unloading, material storage, and equipment operations) are described in SC-30 through SC-33. Approach The goal of this program is to ensure stormwater pollution prevention practices are considered when conducting activities on or around parking areas to reduce potential for pollutant discharge to receiving waters. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives. General Pollution Prevention Protocols  Encourage advanced designs and maintenance strategies for impervious parking lots. Refer to the treatment control BMP fact sheets in this manual for additional information.  Keep accurate maintenance logs to evaluate BMP implementation. Good Housekeeping  Keep all parking areas clean and orderly. Remove debris, litter, and sediments in a timely fashion.  Post “No Littering” signs and enforce anti- litter laws. Objectives  Cover  Contain  Educate  Reduce/Minimize  Product Substitution Targeted Constituents Sediment  Nutrients Trash  Metals  Bacteria Oil and Grease  Organics  Minimum BMPs Covered Good Housekeeping  Preventative Maintenance  Spill and Leak Prevention and Response  Material Handling & Waste Management Erosion and Sediment Controls Employee Training Program  Quality Assurance Record Keeping  Parking Area Maintenance SC-43 September 2014 California Stormwater BMP Handbook 2 of 5 Industrial and Commercial www.casqa.org  Provide an adequate number of litter receptacles.  Clean out and cover litter receptacles frequently to prevent spillage. Preventative Maintenance Inspection Have designated personnel conduct inspections of parking facilities and stormwater conveyance systems associated with parking facilities on a regular basis.  Inspect cleaning equipment/sweepers for leaks on a regular basis. Surface Cleaning  Use dry cleaning methods (e.g., sweeping, vacuuming) to prevent the discharge of pollutants into the stormwater conveyance system if possible.  Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation.  Sweep all parking lots at least once before the onset of the wet season.  Dispose of parking lot sweeping debris and dirt at a landfill.  Follow the procedures below if water is used to clean surfaces:  Block the storm drain or contain runoff.  Collect and pump wash water to the sanitary sewer or discharge to a pervious surface. Do not allow wash water to enter storm drains.  Follow the procedures below when cleaning heavy oily deposits:  Clean oily spots with absorbent materials.  Use a screen or filter fabric over inlet, then wash surfaces.  Do not allow discharges to the storm drain.  Vacuum/pump discharges to a tank or discharge to sanitary sewer.  Dispose of spilled materials and absorbents appropriately. Surface Repair  Check local ordinance for SUSMP/LID ordinance.  Preheat, transfer or load hot bituminous material away from storm drain inlets.  Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting stormwater runoff.  Cover and seal nearby storm drain inlets where applicable (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in Parking Area Maintenance SC-43 September 2014 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.casqa.org place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal.  Use only as much water as necessary for dust control during sweeping to avoid runoff.  Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of collected material and absorbents properly. Spill Response and Prevention Procedures  Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date.  Place a stockpile of spill cleanup materials where it will be readily accessible or at a central location.  Clean up fluid spills immediately with absorbent rags or material.  Dispose of spilled material and absorbents properly. Employee Training Program  Provide regular training to field employees and/or contractors regarding cleaning of paved areas and proper operation of equipment.  Train employees and contractors in proper techniques for spill containment and cleanup.  Use a training log or similar method to document training. Quality Assurance and Record Keeping  Keep accurate maintenance logs that document minimum BMP activities performed for parking area maintenance, types and quantities of waste disposed of, and any improvement actions.  Keep accurate logs of spill response actions that document what was spilled, how it was cleaned up, and how the waste was disposed.  Establish procedures to complete logs and file them in the central office. Potential Capital Facility Costs and Operation & Maintenance Requirements Facilities  Capital investments may be required at some sites to purchase sweeping equipment, train sweeper operators, install oil/water/sand separators, or implement advanced BMPs. These costs can vary significantly depending upon site conditions and the amount of BMPs required. Parking Area Maintenance SC-43 September 2014 California Stormwater BMP Handbook 4 of 5 Industrial and Commercial www.casqa.org Maintenance  Sweep and clean parking lots regularly to minimize pollutant transport into storm drains from stormwater runoff.  Clean out oil/water/sand separators regularly, especially after heavy storms.  Maintain advanced BMPs such as vegetated swales, infiltration trenches, or detention basins as appropriate. Refer to the treatment control fact sheets for more information. Supplemental Information Advanced BMPs Some parking areas may require advanced BMPs to further reduce pollutants in stormwater runoff, and a few examples are listed below. Refer to the Treatment Control Fact Sheets and the New Development and Redevelopment Manual for more information.  When possible, direct sheet runoff to flow into biofilters (vegetated strip and swale) and/or infiltration devices.  Utilize sand filters or oleophilic collectors for oily waste in low quantities.  Arrange rooftop drains to prevent drainage directly onto paved surfaces.  Design lot to include semi-permeable hardscape. References and Resources City of Seattle, Seattle Public Utilities Department of Planning and Development, 2009. Stormwater Manual Vol. 1 Source Control Technical Requirements Manual. California Stormwater Quality Association, 2003. New Development and Redevelopment Stormwater Best Management Practice Handbook. Available online at: https://www.casqa.org/resources/bmp-handbooks/new-development-redevelopment- bmp-handbook. Kennedy/Jenks Consultants, 2007. The Truckee Meadows Industrial and Commercial Storm Water Best Management Practices Handbook. Available online at: http://www.cityofsparks.us/sites/default/files/assets/documents/env- control/construction/TM-I-C_BMP_Handbook_2-07-final.pdf. Orange County Stormwater Program, Best Management Practices for Industrial/Commercial Business Activities. Available online at: http://ocwatersheds.com/documents/bmp/industrialcommercialbusinessesactivities. Parking Area Maintenance SC-43 September 2014 California Stormwater BMP Handbook 5 of 5 Industrial and Commercial www.casqa.org Pollution from Surface Cleaning Folder, 1996, 2003. Bay Area Stormwater Management Agencies Association. Available online at: http://basmaa.org/Portals/0/documents/pdf/Pollution%20from%20Surface%20Cleani ng.pdf. Sacramento Stormwater Management Program. Best Management Practices for Industrial Storm Water Pollution Control. Available online at: http://www.msa.saccounty.net/sactostormwater/documents/guides/industrial-BMP- manual.pdf. The Storm Water Managers Resource Center, http://www.stormwatercenter.net. US EPA. Post-Construction Stormwater Management in New Development and Redevelopment. BMP Fact Sheets. Available online at: http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure &min_measure_id=5. Efficient Irrigation SD-12 January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabmphandbooks.com Description Irrigation water provided to landscaped areas may result in excess irrigation water being conveyed into stormwater drainage systems. Approach Project plan designs for development and redevelopment should include application methods of irrigation water that minimize runoff of excess irrigation water into the stormwater conveyance system. Suitable Applications Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.) Design Considerations Designing New Installations The following methods to reduce excessive irrigation runoff should be considered, and incorporated and implemented where determined applicable and feasible by the Permittee: Employ rain-triggered shutoff devices to prevent irrigation after precipitation. Design irrigation systems to each landscape area’s specific water requirements. Include design featuring flow reducers or shutoff valves triggered by a pressure drop to control water loss in the event of broken sprinkler heads or lines. Implement landscape plans consistent with County or City water conservation resolutions, which may include provision of water sensors, programmable irrigation times (for short cycles), etc. Design Objectives ; Maximize Infiltration ; Provide Retention ; Slow Runoff Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials Contain Pollutants Collect and Convey SD-12 Efficient Irrigation 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com Design timing and application methods of irrigation water to minimize the runoff of excess irrigation water into the storm water drainage system. Group plants with similar water requirements in order to reduce excess irrigation runoff and promote surface filtration. Choose plants with low irrigation requirements (for example, native or drought tolerant species). Consider design features such as: - Using mulches (such as wood chips or bar) in planter areas without ground cover to minimize sediment in runoff - Installing appropriate plant materials for the location, in accordance with amount of sunlight and climate, and use native plant materials where possible and/or as recommended by the landscape architect - Leaving a vegetative barrier along the property boundary and interior watercourses, to act as a pollutant filter, where appropriate and feasible - Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain growth Employ other comparable, equally effective methods to reduce irrigation water runoff. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. Storm Drain Signage SD-13 January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabmphandbooks.com Description Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typically placed directly adjacent to storm drain inlets. Approach The stencil or affixed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. Storm drain messages have become a popular method of alerting the public about the effects of and the prohibitions against waste disposal. Suitable Applications Stencils and signs alert the public to the destination of pollutants discharged to the storm drain. Signs are appropriate in residential, commercial, and industrial areas, as well as any other area where contributions or dumping to storm drains is likely. Design Considerations Storm drain message markers or placards are recommended at all storm drain inlets within the boundary of a development project. The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site map. Designing New Installations The following methods should be considered for inclusion in the project design and show on project plans: Provide stenciling or labeling of all storm drain inlets and catch basins, constructed or modified, within the project area with prohibitive language. Examples include “NO DUMPING Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impervious Land Coverage ; Prohibit Dumping of Improper Materials Contain Pollutants Collect and Convey SD-13 Storm Drain Signage 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com – DRAINS TO OCEAN” and/or other graphical icons to discourage illegal dumping. Post signs with prohibitive language and/or graphical icons, which prohibit illegal dumping at public access points along channels and creeks within the project area. Note - Some local agencies have approved specific signage and/or storm drain message placards for use. Consult local agency stormwater staff to determine specific requirements for placard types and methods of application. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. If the project meets the definition of “redevelopment”, then the requirements stated under “ designing new installations” above should be included in all project design plans. Additional Information Maintenance Considerations Legibility of markers and signs should be maintained. If required by the agency with jurisdiction over the project, the owner/operator or homeowner’s association should enter into a maintenance agreement with the agency or record a deed restriction upon the property title to maintain the legibility of placards or signs. Placement Signage on top of curbs tends to weather and fade. Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms. Supplemental Information Examples Most MS4 programs have storm drain signage programs. Some MS4 programs will provide stencils, or arrange for volunteers to stencil storm drains as part of their outreach program. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. Maintenance Bays &Docks SD-31 January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabmphandbooks.com Description Several measures can be taken to prevent operations at maintenance bays and loading docks from contributing a variety of toxic compounds, oil and grease,heavy metals,nutrients, suspended solids, and other pollutants to the stormwater conveyance system. Approach In designs for maintenance bays and loading docks, containment is encouraged.Preventative measures include overflow containment structures and dead-end sumps. However, in the case of loading docks from grocery stores and warehouse/distribution centers,engineered infiltration systems may be considered. Suitable Applications Appropriate applications include commercial and industrial areas planned for development or redevelopment. Design Considerations Design requirements for vehicle maintenance and repair are governed by Building and Fire Codes, and by current local agency ordinances, and zoning requirements.The design criteria described in this fact sheet are meant to enhance and be consistent with these code requirements. Designing New Installations Designs of maintenance bays should consider the following: Repair/maintenance bays and vehicle parts with fluids should be indoors;or designed to preclude urban run-on and runoff. Repair/maintenance floor areas should be paved with Portland cement concrete (or equivalent smooth impervious surface). Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials Contain Pollutants Collect and Convey SD-31 Maintenance Bays &Docks 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com Repair/maintenance bays should be designed to capture all wash water leaks and spills. Provide impermeable berms, drop inlets, trench catch basins, or overflow containment structures around repair bays to prevent spilled materials and wash-down waters form entering the storm drain system. Connect drains to a sump for collection and disposal. Direct connection of the repair/maintenance bays to the storm drain system is prohibited.If required by local jurisdiction, obtain an Industrial Waste Discharge Permit. Other features may be comparable and equally effective. The following designs of loading/unloading dock areas should be considered: Loading dock areas should be covered, or drainage should be designed to preclude urban run-on and runoff. Direct connections into storm drains from depressed loading docks (truck wells)are prohibited. Below-grade loading docks from grocery stores and warehouse/distribution centers of fresh food items should drain through water quality inlets, or to an engineered infiltration system, or an equally effective alternative.Pre-treatment may also be required. Other features may be comparable and equally effective. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP,WQMP,etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces.The definition of “redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment.If the definition applies, the steps outlined under “designing new installations” above should be followed. Additional Information Stormwater and non-stormwater will accumulate in containment areas and sumps with impervious surfaces. Contaminated accumulated water must be disposed of in accordance with applicable laws and cannot be discharged directly to the storm drain or sanitary sewer system without the appropriate permit. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP),Los Angeles County Department of Public Works,May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County,Port of San Diego, and Cities in San Diego County,February 14, 2002. Model Water Quality Management Plan (WQMP) for County of Orange,Orange County Flood Control District, and the Incorporated Cities of Orange County,Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. Trash Storage Areas SD-32 January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabmphandbooks.com Description Trash storage areas are areas where a trash receptacle (s) are located for use as a repository for solid wastes. Stormwater runoff from areas where trash is stored or disposed of can be polluted. In addition, loose trash and debris can be easily transported by water or wind into nearby storm drain inlets, channels, and/or creeks. Waste handling operations that may be sources of stormwater pollution include dumpsters, litter control, and waste piles. Approach This fact sheet contains details on the specific measures required to prevent or reduce pollutants in stormwater runoff associated with trash storage and handling. Preventative measures including enclosures, containment structures, and impervious pavements to mitigate spills, should be used to reduce the likelihood of contamination. Suitable Applications Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.) Design Considerations Design requirements for waste handling areas are governed by Building and Fire Codes, and by current local agency ordinances and zoning requirements. The design criteria described in this fact sheet are meant to enhance and be consistent with these code and ordinance requirements. Hazardous waste should be handled in accordance with legal requirements established in Title 22, California Code of Regulation. Wastes from commercial and industrial sites are typically hauled by either public or commercial carriers that may have design or access requirements for waste storage areas. The design criteria in this fact sheet are recommendations and are not intended to be in conflict with requirements established by the waste hauler. The waste hauler should be contacted prior to the design of your site trash collection areas. Conflicts or issues should be discussed with the local agency. Designing New Installations Trash storage areas should be designed to consider the following structural or treatment control BMPs: Design trash container areas so that drainage from adjoining roofs and pavement is diverted around the area(s) to avoid run-on. This might include berming or grading the waste handling area to prevent run-on of stormwater. Make sure trash container areas are screened or walled to prevent off-site transport of trash. Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials ; Contain Pollutants Collect and Convey SD-32 Trash Storage Areas 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com Use lined bins or dumpsters to reduce leaking of liquid waste. Provide roofs, awnings, or attached lids on all trash containers to minimize direct precipitation and prevent rainfall from entering containers. Pave trash storage areas with an impervious surface to mitigate spills. Do not locate storm drains in immediate vicinity of the trash storage area. Post signs on all dumpsters informing users that hazardous materials are not to be disposed of therein. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define “redevelopment” in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of “ redevelopment” must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under “designing new installations” above should be followed. Additional Information Maintenance Considerations The integrity of structural elements that are subject to damage (i.e., screens, covers, and signs) must be maintained by the owner/operator. Maintenance agreements between the local agency and the owner/operator may be required. Some agencies will require maintenance deed restrictions to be recorded of the property title. If required by the local agency, maintenance agreements or deed restrictions must be executed by the owner/operator before improvement plans are approved. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002.