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Home My WebLink AboutBaseline Ave Sewer Study Report - 2002w The Power to Change The Power to Build June 19, 2002 Mr. Jim Robinson, PE City of Fontana Engineering Division 8285 Sierra Avenue, Ste 110 Fontana, California 92335 SUBJECT: Baseline Avenue Sewer Study Report (Citrus Avenue to City Limits) Dear Mr. Robinson: Berryman & Henigar is pleased to submit this draft Baseline Avenue Sewer Study for your review and comment. This report will provide the City of Fontana with the necessary information to make decisions on the installation of new sewer facilities as well as related sewer upgrades in the subject area. We are still in the process of incorporating newly proposed sewer projects in the area, including those in Baseline Avenue west of Citrus and South Highland Avenue. We expect those projects to be fully analyzed in the final version of this report. If you have any questions regarding this sewer study, please feel free to call me. OR Ni Sincerely, Steve Smith, P. E. Berryman & Henigar irr Cc: File /an /sm J PA15945 \MS Word Files \Sewer Study \020619 Sewer Report.doc Berryman & Henigar 0, I Scope of Work Berryman & Henigar has been retained by the City of Fontana (City) to evaluate the sewer requirements for a 640 -acre tributary area to Baseline Avenue. The project area is bound by Citrus Avenue and the City limits (Palmetto Avenue) in the east -west direction; and South PR Highland and Baseline Avenues in the north -south direction. The purpose of this study is to identify and propose new facilities in these streets based on City's Sewer Master Plan flow projection rates at build -out. The City has also requested Berryman & Henigar to determine whether the existing sewer facilities within the project limits are able to accommodate sewer flows at build -out. Recommendations will be made to upgrade the existing sewer system if necessary. This letter report will provide the information to allow the City to make the necessary improvement decisions. Evaluation Criteria and Methodology According to City's most recent land use designations, the project study area is comprised of three land use (LU) categories, single - family residential (R -SF), general commercial (C -G), and public facility (P -PF). The City's Master Sewer Plan Update (September 2000) designated sewage flow generation factors in relation to all land use categories. Exhibit A presents the City's Sewage Generation Factors in tabular format. Table 1 summarizes the relevant . generation rates corresponding to the project land use designations. u_ . c•_.. rl.. , I%- �.+.—n Om +gsC uui+hln Prniart Limits L' 1 ault9 1 -'Juwa a rw.. Land Use %L U U - . ... ................. Equivalent DU /Acre . — - -- - ---- --- Flow Per DU Flow ( allons /da er Acre R -SF 5.00 279 1395 C -G 5.38 - 1500 P -PF 5.38 - 1500 The proposed sewer main sizes were determined based on the City's peak daily flow (PDF) calculation formula shown below: PDF = 2.5(Q Where Q is the average daily flow (ADF) expressed in million gallons per day (mgd). All proposed sewers presented in this report meet the City's design requirements in term of: 1. Minimum pipe slope between manholes of one percent (1 %) 2. Minimum pipe size of 8 inches 3. Minimum pipe depth of 8 feet 4. Minimum flow velocity of 2.5 feet per second (fps) 5. Maximum spacing between each manhole is 350 feet 6. Depth of flow to depth of pipe diameter ratio (D /d) must be less than 0.50 for main diameters less than 12 inches; and 0.75 for pipe diameters greater than 12 inches 7. All sewer main will be vitrified clay pipe (VCP) using a Manning's 'N' value of 0.013 p. \15945 \MS Word Files \Sewer Study \020619 Sewer Report.doc Berryman & Henigar L Sewer System Evaluation The general flow pattern follows the natural drainage topography. The proposed system is designed to direct flow towards the south /southwesterly corner of the project site. Drainage basins are divided among streets aligned in the north /south direction. Once the flow reaches the junctions at the southern limits, the flow continues westerly connecting into an existing 18 -inch vitrified clay pipe (VCP) at the intersection of Citrus and Baseline Avenue. A tabular summary of flow calculations based on land use is shown in Exhibit B. A graphical illustration of the recommendation is shown in Exhibit C. Citrus Avenue It is estimated the flow generated north of Highway 30/210 is approximately 6 mgd (See Exhibit D). Part of the tributary flow from the north will be directed into a system on Citrus Avenue via an existing 21" VCP. At the intersection of Citrus and Los Cedros Avenue, the 21" VCP bends and directs flow westerly. The proposed 8" VCP on Walnut Avenue, east of Citrus, will be directed southward connecting into an existing 15 -inch VCP on Citrus Avenue. While the existing 15" VCP on Citrus Avenue is over designed, it is not necessary to replace the existing sewer system. Oleander, Cypress, and Juniper Avenues Based on review of the current system, the existing 8 -inch VCP system along Oleander Avenue south of Walnut Street is able to accommodate the projected volume only if flow east of Oleander is diverted into a new drainage basin on Cypress. It is recommended that the new facilities on Cypress Avenue south of Walnut Street be 10 inches in diameter. Existing flow generated along Sierra Avenue entering the Juniper basin will be directed into an existing 8 -inch VCP south of Baseline Avenue. The proposed 8 -inch collection system on Juniper north of Baseline will be conveyed westerly into the proposed 10 -inch VCP on Baseline Avenue. Mango and Sierra Avenues With the exception of seven parcels east of Sierra and an approximate 47.5 AC west of Palmetto Ave, all other residential discharge between Sierra and Mango Avenues will flow easterly towards an existing 8 -inch VCP system on Mango Avenue. At build out, it is recommended the existing 8 -inch VCP south of MiCallef Street be upgraded to a 12 -inch VCP. The projected flow west of Sierra Avenue will require an 8 -inch VCP system to be installed connecting into an existing 8 -inch main near the southern end of Sierra Avenue. Baseline Avenue As indicated in Exhibit C, 18 -inch, 15 -inch, and 10 -inch VCPs are recommended along Baseline Avenue to convey flow westerly into an existing 18 -inch VCP at the intersection of Citrus and Baseline Avenue. An 8 -inch VCP collecting flow between Sierra and Mango Avenues along Baseline is recommended to direct flow easterly. For future development along the northwestern side of Baseline and Palmetto Avenue, another 8 -inch VCP collecting flow between Mango and Palmetto Avenues along Baseline is recommended to direct flow easterly toward Palmetto Avenue. All flows currently flowing southerly past Baseline Avenue will be diverted westerly towards Citrus Avenue. P:\15945 \MS Word Files \Sewer Study\020619 Sewer Report.doc 2 Berryman & Henigar Summary of Recommendations Shown below is a summary of the improvements to be made on each street within the project area: ♦ Juniper Avenue o 3,000 linear feet of 8 inch VCP o 9 new manholes ♦ Sierra Avenue o 3,200 linear feet of 8 inch VCP .� o 11 new manholes ♦ Mango Avenue o 1,300 linear feet of 12 inch VCP upgrade ♦ South Highland Avenue o 2,450 linear feet of 8 inch VCP o 7 new manholes ♦ Walnut Street o 1,900 linear feet of 8 inch VCP o Abandon 270 linear feet of 10" VCP o 6 new manholes ♦ Baseline Avenue o 1500 linear feet of 8 inch VCP o 1,320 linear feet of 10 inch VCP o 1,320 linear feet of 15 inch VCP o 1,400 linear feet of 18 inch VCP o 18 new manholes P: \15945 \MS Word Files \Sewer Study\020619 Sewer Report.doc 3 Berryman & Henigar ♦ Citrus Avenue o 1500 linear feet of 8 inch VCP o 4 new manholes ♦ Oleander Avenue o 600 linear feet of 8 inch VCP o 2 new manholes ♦ Cypress Avenue o 600 linear feet of 8 inch VCP o 2,650 linear feet of 10 inch VCP o 9 new manholes ♦ Juniper Avenue o 3,000 linear feet of 8 inch VCP o 9 new manholes ♦ Sierra Avenue o 3,200 linear feet of 8 inch VCP .� o 11 new manholes ♦ Mango Avenue o 1,300 linear feet of 12 inch VCP upgrade ♦ South Highland Avenue o 2,450 linear feet of 8 inch VCP o 7 new manholes ♦ Walnut Street o 1,900 linear feet of 8 inch VCP o Abandon 270 linear feet of 10" VCP o 6 new manholes ♦ Baseline Avenue o 1500 linear feet of 8 inch VCP o 1,320 linear feet of 10 inch VCP o 1,320 linear feet of 15 inch VCP o 1,400 linear feet of 18 inch VCP o 18 new manholes P: \15945 \MS Word Files \Sewer Study\020619 Sewer Report.doc 3 Berryman & Henigar H I Exhibit A - CITY OF FONTANA SEWAGE FLOW GENERATION FACTORS f1 0 rye C' � i T Land Use Description Equivalent DU per acre Flow per Dwelling Unit Flow per Net Acre (gpad) R -E Residential Estate 1 279 279 R -L Low Density Residential 3 279 837 R -IE Industrial Estate 3 279 837 R -PC Residential Planned Community 5 279 1395 R -SF Single Family Residential 5 279 1395 R -ML Medium -Low Density Residential 5 279 1395 R -M Medium Density Residential 7 279 1953 R -MH Medium- High Density Residential 9 279 2511 C -O Office Professional 5.38 -- 1500 C -C Community Commercial 5.38 -- 1500 C -G General Commercial 5.38 -- 1500 C -R Regional Commercial 5.38 -- 1500 C Commercial 2005 and after) 10.76 -- 3000 CMU Community Mixed Use 5.38 -- 1500 RMU Regional Mixed Use 5.38 -- 1500 I Industrial 5.38 -- 1500 before 2006 I -P Planned Industrial 10.76 -- 3000 I -G General Industrial 10.76 -- 3000 I -SP Industrial Specific Plan 10.76 -- 3000 P -UC Utility Corridor 0 -- 0 P -R Recreational 72 -- 200 P -S School 8.60 -- 2400 P -PF Public Facility 5.38 -- 1500 P -1 Institutional 16.13 -- 4500 OS -N Natural Area 0 -- 0 OS -R Resource Area 0 -- 0 Reference: City of Fontana Sewer Master Plan Update (September 2000), Table 2.1 r, Exhibit A 020619 Fontana Sewer.xis Exhibit B - BASELINE AVENUE SEWER STUDY (CITRUS TO CITY LIMITS) Citrus Avenue (North of Walnut)" — Based on City of Fontana's Sewer Master Plan (1998), Flow from Tributary Area North of Highland Avenue is Approximately 6 MGD. Citrus Avenue (South of Walnut) Tributary Area (Ac) Land Use FIOWIAC Average Flow Peak Flow (mgd) i-roposed Sewer Main Description Tributary Area (Ac) Land Use (gpad) (gpd) Peak Flow (mgd) (in) North of South Highland 10.9 C -G 1500 16,335 0.059 8 South of South Highland 8.1 C -G 1500 12,210 0.045 8 East of Citrus 9.2 C -G 1500 13,815 0.051 8 East of Citrus 16.3 R -SF 1395 22,739 0.080 8 West of Oleander Total (mgd) R -SF 1395 2.67 0.101 8 Walnut East of Oleander Pipe Slope (ft/ft) R -SF 1395 0.01 0.028 8 Walnut East of Oleander VCP N -value P -PF 1500 0.013 0.094 8 Pipe Diameter (in) Existing VCP 21 Flow Depth (in) 11.68 Flow Velocity (fps) 6.88 D/d ( %) 56% — Based on City of Fontana's Sewer Master Plan (1998), Flow from Tributary Area North of Highland Avenue is Approximately 6 MGD. Citrus Avenue (South of Walnut) Oleander Avenue (North of Walnut) Description Tributary Area (Ac) Land Use FIOWIAC Average Flow Peak Flow (mgd) i-roposed Sewer Main Description Tributary Area (Ac) Land Use (gpad) (gpd) Peak Flow (mgd) (in) East of Citrus 30.7 R -SF 1395 42,771 0.142 8 East of Citrus 2.2 C -G 1500 3,315 0.014 8 Walnut East of Citrus 5.1 R -SF 1395 7,156 0.028 8 East of Oleander Total (mgd) 1 P -PF 1500 0.053 0.085 8 West of Oleander Pipe Slope (ft/ft) R -SF 1395 0.01 0.101 8 Walnut East of Oleander VCP N -value R -SF 1395 0.013 0.028 8 Walnut East of Oleander Pipe Diameter (in) P -PF 1500 8 0.094 8 Flow Depth (in) 1.41 Flow Velocity (fps) 1.98 Oleander Avenue (North of Walnut) Description Tributary Area (Ac) Land Use Flow /Ac (gpad) Average Flow (gpd) Peak Flow (mgd) Proposed Sewer Main (in) North of South Highland 10.5 C -G 1500 15,750 0.057 8 South of South Highland 4.6 C -G 1500 6,900 0.027 8 West of Oleander 4.7 C -G 1500 7,050 0.028 8 East of Oleander 2.9 C -G 1500 4,380 0.018 8 East of Oleander 16.1 1 P -PF 1500 24,210 0.085 8 West of Oleander 21.1 R -SF 1395 29,435 0.101 8 Walnut East of Oleander 5.1 R -SF 1395 7,170 0.028 8 Walnut East of Oleander 18.2 P -PF 1500 27,330 0.094 8 Total (mgd) Pipe Slope (ft/ft) VCP N -value Pipe Diameter (in) Flow Depth (in) Flow Velocity (fps) D/d ( %) 0.122 0.02 0.013 8 3.51 4.62 44 °h B -1 Exhibit B 020619 Fontana Sewer.xis B S Exhibit B - BASELINE AVENUE SEWER STUDY (CITRUS TO CITY LIMITS) Oleander Avenue (South of Walnut) ' Cvoress Avenue (North of Walnut) Description Tributary Area (Ac) Land Use Flow /Ac Average Flow Peak Flow (mgd) Proposed Sewer Main Description Tributary Area (Ac) Land Use I (gpad) (gpd) Peak Flow (mgd) (in) West of Oleander 34.0 R -SF 1395 47,430 0.156 10 East of Oleander 32.5 R -SF 1395 45,296 0.150 12 West of Cypress Total (mgd) 0.093 1500 24,270 Pipe Slope (f /ft) 0.02 East of Cypress 2.8 VCP N -value 0.013 4,230 0.017 Pipe Diameter (in) 8 20.0 R -SF Flow Depth (in) 2.88 0.096 8 Flow Velocity (fps) 4.19 R -SF 1395 12,081 0.045 8 Walnut East of Cypress 2.8 R -SF 1395 ' Cvoress Avenue (North of Walnut) Description Tributary Area (Ac) Land Use Flow /Ac (gpad) Average Flow (gpd) Peak Flow (mgd) Proposed Sewer Main (in) North of South Highland 9.4 C -G 1500 14,100 0.052 8 South of South Highland 2.4 C -G 1501 3,602 0.015 8 West of Cypress 2.9 C -G 1500 4,350 0.018 8 West of Cypress 16.2 P -PF 1500 24,270 0.085 8 East of Cypress 2.8 C -G 1500 4,230 0.017 8 East of Cypress 20.0 R -SF 1395 27,858 0.096 8 Walnut East of Cypress 8.7 R -SF 1395 12,081 0.045 8 Walnut East of Cypress 2.8 R -SF 1395 3,948 0.016 8 Total (mgd) Pipe Slope (ft/ft) VCP N -value Pipe Diameter (in) Flow Depth (in) Flow Velocity (fps) D/d (%) 0.094 0.02 0.013 8 3.07 4.32 1 38% W Cypress Avenue (South of Walnut) S E Exhibit B Flow /Ac Average Flow Proposed Sewer Main Description Tributary Area (Ac) Land Use I (gpad) (gpd) Peak Flow (mgd) (in) West of Cypress 31.8 R -SF 1395 44.305 0.147 8 East of Cypress 30.2 R -SF 1395 42,115 0.140 8 Total (mgd) 0.086 Pipe Slope (it/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) 10 Flow Depth (in) 3.36 Flow Velocity (fps) 3.20 D/d ( %) 1 34% S E Exhibit B 020619 Fontana Sewer.xls B Exhibit B - BASELINE AVENUE SEWER STUDY (CITRUS TO CITY LIMITS) Juniper Avenue (North of Walnut) Description Tributary Area (Ac) Land Use Flow /Ac (gpad) Average Flow (gpd) Peak Flow (mgd) Proposed Sewer Main (in) North of South Highland 2.8 R -SF 1395 3,906 0.016 8 North of South Highland 7.3 R -SF 1395 10,184 0.038 8 North of South Highland 4.3 C -G 1501 6,454 0.025 9 North of South Highland 5.7 C -G 1500 8,565 0.033 8 South of South Hi hland 9.1 C -G 1500 13,620 0.050 8 North of South Highland 7.1 C -G 1500 10,620 0.040 8 North of South Highland 6.8 C -G 1500 10,200 0.039 8 West of Juniper 2.0 C -G 1501 3,002 0.013 8 West of Juniper 4.8 C -G 1500 7,155 0.028 8 West of Juniper 14.3 R -SF 1395 19,949 0.071 8 East of Juniper 33.0 R -SF 1395 46,035 0.152 8 Walnut East of Juniper 7.0 R -SF 1395 9,793 0.037 8 Total (mgd) Pipe Slope (ft/ft) VCP N -value Pipe Diameter (in) Flow Depth (in) Flow Velocity (fps) D/d ( %) 0.149 0.02 0.013 10 3.55 4.83 36 0 /4 P i ll Juniper Avenue (South of Walnut) I ad Sierra Avenue Flow/AC verage Flow Proposed Sewer main Description Tributary Area (Ac) Land Use (gpad) (gpd) Peak Flow (mgd) (in) West of Juniper 27.3 R -SF 1395 38,097 0.128 8 East of Juniper 22.9 R -SF 1395 31,946 0.109 8 East of Juniper 9.1 C -G 1500 13,650 0.050 8 East of Sierra Total (mgd) R -SF 1395 0.084 0.022 8 East of Sierra Pipe Slope ( ft/ft) R -SF 1396 0.01 0.005 9 East of Sierra VCP N -value R -SF 1395 0.013 0.021 8 Pipe Diameter (in) 6 Flow Depth (in) 3.36 Flow Velocity (fps) 3.20 D/d ( %) 42% Flow Depth (in) 2.95 ad Sierra Avenue ' Exhibit B 020619 Fontana Sewer.xls B -3 Flow/Ac Average Flow Proposed Sewer Main Description Tributary Area (Ac) Land Use (gpad) (gpd) Peak Flow (mgd) (in) West of Sierra 4.3 R -SF 1395 5,999 0.024 8 West of Sierra 22.9 R -SF 1395 31,932 0.109 8 West of Sierra 8.1 C -G 1500 12,210 0.045 8 East of Sierra 4.0 R -SF 1395 5,580 0.022 8 East of Sierra 0.8 R -SF 1396 1,117 0.005 9 East of Sierra 3.7 R -SF 1395 5,217 0.021 8 Total (mgd) 0.062 Pipe Slope ( ft/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) 8 Flow Depth (in) 2.95 Flow Velocity (fps) 3.00 D/d ( %) 37% ' Exhibit B 020619 Fontana Sewer.xls B -3 Exhibit B - BASELINE AVENUE SEWER STUDY (CITRUS TO CITY LIMITS) Baseline Avenue - Distinct Drainaoe Basins Westerly Cross Street Tributary Area (Ac) Land Use Flow /Ac (gpad) Average Flow (gpd) Peak Flow (mgd) Citrus 9.3 C -G 1500 13,965 0.051 Citrus 3.0 R -SF 1395 4,185 0.017 Oleander 5.1 R -SF 1395 7,142 0.028 Cypress 14.2 R -SF 1395 19,809 0.070 Sierra 12.6 R -SF 1395 17,577 0.063 Palmetto 9.0 R -SF 1395 12,499 0.046 8 Total (mgd) 0.309 0.858 Mango Avenue CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT CITRUS /BASELINE JUNCTION Flow /Ac Average Flow Proposed Sewer Main Description Tributary Area (Ac) Land Use (gpad) (gpd) Peak Flow (mgd) (in) Flow Path (mgd) (mgd) (mgd) Main (in) 8" beginning south o East of Mango 90.3 R -SF 1395 125,927 0.379 Highland Ave to north o MiCallef East of Mango 11 R -SF 1395 15,387 0.056 12" beginning at MiCallef West of Mango 120 R -SF 1 1395 167,400 0.492 12" beginning at MiCallef 8 Total (mgd) 0.309 0.858 2.016 Pipe Slope (ft/ft) Pipe Slope ( ft/ft) 0.01 0.01 VCP N -value VCP N -value 0.013 Pipe Diameter (in) Oleander (South of Baseline) 18 12 Flow Depth (in) Flow Depth (in) 5.50 5.81 Flow Velocity (fps) Flow Velocity (fps) 4.47 Did (Y.) 31% D/d ( %) 48% CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT CITRUS /BASELINE JUNCTION Proposed Sewer Average Flow Peak Flow Cumulative Total Flow Path (mgd) (mgd) (mgd) Main (in) Citrus (South of Walnut) 0.053 0.173 0.173 8 Oleander and Baseline Junctic 0.718 1.849 2.023 15 Baseline (Citrus to Oleander ) 0.018 0.065 2.016 8 Total (mgd) 0.789 2.016 Pipe Slope ( ft/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) Oleander (South of Baseline) 18 Flow Depth (in) 5.50 Flow Velocity (fps) 4.68 Did (Y.) 31% d a 1 ' Exhibit B B-4 020619 Fontana Sewer.xls CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT MANGOIBASELINE JUNCTION Average Flow Peak Flow Cumulative Total Proposed ewer Flow Path Exhibit B - BASELINE AVENUE SEWER STUDY (CITRUS TO CITY LIMITS) (mgd) Main (in) Sierra (non - tributary) JUNCTION 0.199 0.199 CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT OLEANDER/BASELINE Baseline (Juniper to Sierra) 0.000 0.000 0.199 8 Juniper (South of Walnut) Proposed Sewer 0.262 0.433 Average Flow Peak Flow Cumulative Total Total (mgd) Flow Path (mgd) (mgd) (mgd) Main (in) 0.01 ' 0.01 Oleander (North of Walnut) 0.122 0.369 0.369 8 Exist VCP 8 Oleander (South of Walnut) 0.093 0.287 0.656 10 Flow Velocity (fps) ' Cypress and Baseline Jun ctioi 0.007 0.028 0.684 15 Baseline (Oleander to Cypres 0.496 1.321 1.849 15 Total (mgd) 0.718 1.849 Pipe Slope (ft/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) Oleander (South of Baseline) 15 Flow Depth (in) 7.00 Flow Velocity (fps) 5.10 D/d (•h) 47% OF SYSTEM ENDING AT CYPRESS /BASELINE JUNCTION CUMULATIVE FLOW SUMMARY Proposed Sewer Average Flow Peak Flow Cumulative Total *� Flow Path (mgd) (mgd) (mgd) Main (in) Juniper (North of Walnut) 0.149 0.443 0.443 10 Cypress (North of Walnut) 0.094 0.292 0.692 8 Cypress (South of Walnut) 0.086 0.269 0.912 8 B aseline (Cypress to Juniper 0.020 0.070 0.962 8 Juniper and Baseline Junctior 0.146 0.433 1.321 Total (mgd) 0.496 1.321 Pipe Slope (ft/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) Baseline (Oleander to Cypress) 15 Flow Depth (in) 5.80 Flow Velocity (fps) 4.67 D/d (%) 1 39% AT JUNIPERIBASELINE JUNCTION CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT MANGOIBASELINE JUNCTION Average Flow Peak Flow Cumulative Total Proposed ewer Flow Path (mgd) (mgd) (mgd) Main (in) Sierra (non - tributary) 0.062 0.199 0.199 8 Baseline (Juniper to Sierra) 0.000 0.000 0.199 8 Juniper (South of Walnut) 0.084 0.262 0.433 8 Total (mgd) 0.146 Total (mgd) 0.433 Pipe Slope (ft/ft) 0.01 VCP N -value 0.01 0.013 Pipe Diameter (in) 0.013 Exist VCP 8 Flow Depth (in) 12 2.74 Flow Velocity (fps) 5.22 2.89 D/d 1%) 4.26 34% CUMULATIVE FLOW SUMMARY OF SYSTEM ENDING AT MANGOIBASELINE JUNCTION Exhibit B 020619 Fontana Sewer.xls B -5 A verage Flow Peak 161ow Cumulative otal Proposed ewer Flow Path (mgd) (mgd) (mgd) Main (in) Mango (S Highland to Baselin 0.309 0.858 0.858 8 Baseline (East of Sierra) 0.018 0.063 0.902 8 Total (mgd) 0.326 0.902 Pipe Slope (ft/ft) 0.01 VCP N -value 0.013 Pipe Diameter (in) 12" beginning at MiCallef 12 Flow Depth (in) 5.22 Flow Velocity (fps) 4.26 D/d ( %) 44•h Exhibit B 020619 Fontana Sewer.xls B -5 i 1 1 1 0 a a a i i 0 e 6