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DATE 9/18/2013 PROJECT EL CERRITO URBAN GREENERY TITLE POLLUTANT REMOVAL SUMMARY PREPARED CTANG, MFU CHECKED JLEYS RESIDENTIAL 35 Soft Edge Bioretention (RG) 0.06 63.00 30.68 6.38 #VALUE! 38.75 0.44 0.06 93.14 242.24 43.21 RESIDENTIAL 100 Hard Edge Bioretention (RG) 0.16 180.01 87.66 18.24 #VALUE! 110.70 1.25 0.17 266.10 692.12 123.47 MIXED 35 Soft Edge Bioretention (RG) 0.08 91.75 78.34 9.42 #VALUE! 51.11 0.56 0.07 117.65 296.07 37.88 MIXED 100 Hard Edge Bioretention (RG) 0.24 262.14 223.84 26.91 #VALUE! 146.02 1.61 0.19 336.13 845.93 108.24 MIXED 50 Detention Basin / Forebay 0.75 585.53 336.05 No Data #VALUE! 189.01 4.81 0.66 680.87 3131.03 618.30 MIXED 12 Porous Pavement 0.47 237.32 9.14 37.41 #VALUE! No Data 0.07 0.01 385.94 2325.04 219.20 MIXED 10 Self-Treating Landscape 0.31 79.11 #DIV/0! 16.15 #DIV/0! 37.28 #DIV/0! #DIV/0! 182.50 770.54 135.10 MIXED 70 Wetland Basin 0.02 7.09 12.80 No Data #VALUE! 1.93 0.09 0.01 15.57 73.01 8.59 RESIDENTIAL 9,559 Soft Edge Bioretention (RG) 6.274 0.006 0.011 0.055 #VALUE! 0.009 0.798 5.824 0.004 0.001 0.008 RESIDENTIAL 9,559 Hard Edge Bioretention (RG) 6.274 0.006 0.011 0.055 #VALUE! 0.009 0.798 5.824 0.004 0.001 0.008 MIXED 9,559 Soft Edge Bioretention (RG) 4.162 0.004 0.004 0.037 #VALUE! 0.007 0.622 5.185 0.003 0.001 0.009 MIXED 9,559 Hard Edge Bioretention (RG) 4.162 0.004 0.004 0.037 #VALUE! 0.007 0.622 5.185 0.003 0.001 0.009 MIXED 1,247 Detention Basin / Forebay 0.670 0.001 0.001 No Data #VALUE! 0.003 0.104 0.760 0.001 0.000 0.001 MIXED 576 Porous Pavement 0.257 0.001 0.001 0.003 #VALUE! No Data 0.081 0.676 0.000 0.000 0.001 MIXED 576 Self-Treating Landscape 0.322 0.001 0.000 0.006 0.000 0.003 0.000 0.000 0.001 0.000 0.001 MIXED 117,017 Wetland Basin 36.371 0.099 0.055 No Data #VALUE! 0.363 7.617 63.476 0.045 0.010 0.081 100 Note: Porous Pavement and Self-Treating Landscapes only treat the rainfall that falls directly on them. SUMMARY OF POLLUTANTS REMOVED ANNUALLY AT STUDIED LOCATIONS (LB/YR) Residential 1 - OHLONE Forebay 2.010 0.003 #VALUE! #VALUE! #VALUE! 0.008 #VALUE! #VALUE! 0.002 0.000 0.002 Mixed 1- OHLONE Bioretention (RG) 5.07 0.00 #VALUE! 0.05 #VALUE! 0.01 #VALUE! #VALUE! 0.00 0.00 0.01 Mixed 4-CENTRAL PARK Forebay 5.72 0.02 #VALUE! 0.04 #VALUE! 0.02 #VALUE! #VALUE! 0.01 0.00 0.01 Mixed 5-CREEKSIDE PARK Wetland 2,624.51 7.13 #VALUE! #VALUE! #VALUE! 26.21 #VALUE! #VALUE! 3.24 0.69 5.88 Residential 11-LEXINGTON Bioretention (RG) 64.63 0.06 #VALUE! 0.56 #VALUE! 0.09 #VALUE! #VALUE! 0.04 0.01 0.08 Residential 11-KEARNEY Bioretention (RG) 64.63 0.06 #VALUE! 0.56 #VALUE! 0.09 #VALUE! #VALUE! 0.04 0.01 0.08 Residential 12-ASHBURY Bioretention (RG) 77.30 0.07 #VALUE! 0.68 #VALUE! 0.11 #VALUE! #VALUE! 0.05 0.02 0.10 CONVERSION FACTOR (FROM 0.01 AVG CANOPY DIA (ft) 15 RUNOFF RETAINED 2% REDUCTION FOR 5% OF INCREASED CANOPY AREA EXISTING TREES (EA)1 4,625 ANNUAL RAINFALL TREE2 0.251 1REFLECTS TOTAL NUMBER OF EXISTING TREES IN CITY OF EL CERRITO. FROM PG 27 OF EL CERRITO URBAN FOREST MANAGEMENT PLAN FOUND HERE: http://ca-elcerrito.civicplus.com/DocumentCenter/Home/View/893 2ASSUMING .2 INCHES MAX PONDING AT TREE SURROUNDING AVG CANOPY AREA (sf) TOTAL CANOPY AREA (sf) ANNUAL RUNOFF DEPTH (ft) TOTAL VOL RUNOFF (gal/yr) 5% CANOPY AREA (SF) 177 817,305 0.25 1,536,491 40,865 POLLUTANT REMOVAL SUMMARY Nitrate + Nitrite BOD COD Lead Copper VOL OF RUNOFF REDUCED PER TREE PLANTED (gal/yr) 133 COST OF POLLUTANT REMOVAL BY BMP TYPE (DOLLAR/LB) GENERAL COST BY WEIGHT (dollar/lb) LAND USE UNIT COST of BMP (dollar/sf) BMP TYPE TSS TP Soluble Phosphorus TKN Ammonia Zinc Copper POLLUTANTS REMOVED PER UNIT BMP AREA (LB/100SF) GENERAL QUANTITY BENEFIT (lb/100sf) NO OF TREES PER 5% CANOPY AREA INC (EA) 231 VOL OF RUNOFF REDUCED PER 5% INC (gal/yr) 30,730 PROPOSED TREE PLANTING BENEFIT Zinc Nitrate + Nitrite BOD COD Lead BMP TYPE ANNUAL RUNOFF TREATED (gal/100sf) POLLUTANTS REMOVED ANNUALLY BY LOCATION LAND USE LOCATION BMP TYPE TSS TP Soluble Phosphorus TKN Ammonia Nitrate + Nitrite BOD COD Lead Copper Zinc SUMMARY OF RUNOFF RETAINED PER TREE EXISTING CONDITION RUNOFF REDUCTION BY TREES PLANTED ASSUMPTIONS LAND USE TSS TP Soluble Phosphorus TKN Ammonia GENERAL POLLUTANTS REMOVED (lb/yr) ---PAGE BREAK--- BMP UNIT COST UNIT Forebay 50 SF Hard Edge Bioretention (RG) 100 SF RESIDENTIAL 0.0008429 0.0000032 0.0000012 0.0000159 #VALUE! 0.0000061 0.0000835 0.0006092 0.0000012 0.0000003 0.0000011 Soft Edge Bioretention (RG) 35 SF MIXED 0.0005591 0.0000022 0.0000005 0.0000107 #VALUE! 0.0000047 0.0000651 0.0005425 0.0000010 0.0000002 0.0000013 Porous Pavement 12 SF Self-Treating Landscape 10 SF Wetland 70 SF INFORMATION OBTAINED FROM HUNTERS POINT MASTER PLAN COST/BENEFIT CRITERIA - - Bioretention (RG) 77.9 18.2 - 36.2 - 15.4 - - 32.7 54.9 75.2 - - Bioswale 37.3 34.0 - 13.9 - 16.7 - - 48.6 39.4 36.7 - - Detention Basin / Forebay 63.8 21.4 - outlier - 34.5 - - 49.0 46.5 57.6 - - Media Filter 83.5 50.0 - 40.6 - outlier - - 83.9 46.3 76.8 - - Porous Pavement 79.8 40.0 - 51.8 - outlier - - 56.7 39.8 74.0 - - Self-Treating Landscape1 100.0 100.0 - 100.0 - 100.0 - - 100.0 100.0 100.0 - - Wetland Basin 55.6 38.5 - outlier - 66.7 - - 40.4 36.4 54.2 1 Self-Treating Areas do not allow run off during a water quality event; therefore removal efficiencies are 100% Residential 1 - OHLONE Forebay 3.15 0.012 0.004 0.059 - 0.023 0.312 2.279 0.004 0.001 0.004 Mixed 1- OHLONE Bioretention (RG) 6.51 0.03 0.01 0.13 - 0.05 0.76 6.32 0.01 0.00 0.01 Mixed 4-CENTRAL PARK Stream 15.34 0.06 0.01 0.29 - 0.13 1.79 14.88 0.03 0.01 0.04 Mixed 5-CREEKSIDE PARK Wetland 4,721.3 19 4 91 - 39 550 4,580 8 2 11 Residential 11-LEXINGTON Bioretention (RG) 83.00 0.31 0.12 1.56 - 0.60 8.22 59.99 0.12 0.03 0.11 Residential 11-KEARNEY Bioretention (RG) 83.00 0.31 0.12 1.56 - 0.60 8.22 59.99 0.12 0.03 0.11 Residential 12-ASHBURY Bioretention (RG) 99.27 0.38 0.14 1.87 - 0.72 9.83 71.75 0.14 0.03 0.13 LOCATION LAND USE LOCATION Zinc TKN Copper Zinc TP Soluble Phosphorus TKN Ammonia Nitrate + Nitrite TSS Lead TSS TP Soluble Phosphorus Zinc BMP COST TP Copper Soluble Phosphorus Nitrate + Nitrite BMP TYPE TSS Lead COD BOD Ammonia TKN Copper BMP DATABASE SUMMARY - POLLUTANTS REMOVED BY BMP BOD COD Lead BMP DATABASE SUMMARY - POLLUTANT INTAKE QUANTITY AT STUDIED LOCATIONS (lb/yr) LAND USE Ammonia Nitrate + Nitrite BOD COD POLLUTANT LOADING (lb/gal) BMP TYPE REFERENCE TABLES ---PAGE BREAK--- DATE 9/18/2013 PROJECT TITLE PREPARED CTANG, MFU GENERAL VOLUME BASED CALCULATION 6.0% Of impervious area TYPE VALUE COMMENTS ADDITIONAL AREA FOR TRANSITION BUFFER 5.0% Of BMP area % IMPERVIOUS 60% RG WITH TRANSITION BUFFER (ASSUME 1' EACH SIDE) 8.0 feet .1 INCH 8.33E-03 RG WIDTH BOTTOM 2.0 feet AC-FT TO CF 43560 HRT 7.0 days CF to Gal 7.48 AC TO SF 43,560 TYPE VALUE COMMENTS CANOPY SIZE 10 FT TREE PIT 20.25 4.5'x4.5' STORM WATER RUN-OFF RAINGARDENS BMP TYPE LOCATION WATERSHED AREA (SF) BMP AREA (SF) BMP AREA W/ TRANSITION (SF) REQUIRED LENGTH (LF) ANNUAL RAIN DEPTH (FT) ANNUAL RUNOFF TREATED (CF) ANNUAL RUNOFF TREATED (GAL/YR) RAINGARDEN 12 ASHBURY 20,534 1,232 1,294 216 0.77 15,744 117,774 RAINGARDEN (AREA/EA - THERE ARE 2 TOTAL) 11 FAIRMONT & LEXINGTON 8,584 515 541 90 0.77 6,582 49,234 RAINGARDEN (PER RG - THERE ARE 2 TOTAL) 11 FAIRMONT & KEARNEY 8,584 515 541 90 0.77 6,582 49,234 RAINGARDEN 1 OHLONE & GLADYS/BLAKE 33,852 2,031 2,133 355 0.77 25,956 194,161 WETLAND BMP TYPE LOCATION AREA (SF) DEPTH (LF) VOLUME (CF) HRT Q (CF/D) ANNUAL RUNOFF TREATED (CF) ANNUAL RUNOFF TREATED (GAL/YR) WETLAND 5 CREEKSIDE PARK 7,216 3 21,648 7 3093 1,128,789 8,443,925 FOREBAY BMP TYPE LOCATION LENGTH (LF) WIDTH (LF) DEPTH (LF) VOLUME (AC-FT) WATERSHED AREA (SF) ANNUAL RAINFALL (FT) ANNUAL RUNOFF TREATED (GAL/YR) FOREBAY 1 SCHMIDT 10 10 3 0.007 60,000 0.01 3,740 FOREBAY 4 CENTRAL PARK 100 11 2 0.051 440,000 0.01 27,429 *sized Forebay using the following criteria: RUNOFF - FOREBAY TREE ASSUMPTIONS 5% CANOPY = 2% RUNOFF RETAINED EL CERRITO URBAN GREENERY BMP SIZING FOREBAY ASSUMPTIONS GENERAL ASSUMPTIONS RUNOFF - WETLAND RUNOFF - RAINGARDEN Appendix F