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6.C. - Page 48 of 71 <br />F— <br />W <br />LU <br />LL' <br />F- <br />U) <br />SECOND <br />STORY <br />PATIO <br />— (N) 6" SD CONNECT TOQ Ly MAIN <br />J J <br />DOWN SPOUT FROM 851 MAI N <br />FLOWTHROUGH STREET DMA -1 <br />(N) 3 -CURB DRAINS <br />(SECOND STORY) CONNECT TO DOWNSPOUT <br />PUMP DISCHARGE LINES <br />FROM STORMWATER TREATMENT <br />�.� STRUCTURE IN BASEMENT <br />FLOW THROUGH PLANTER DRAINAGE MANAGEMENT <br />LOCATED ON SECOND AREA (DMA) BOUNDARY <br />STORY PATIO <br />I COURTYARD <br />f <br />Graphic Scale (in feet) <br />10 0 i0 20 <br />I inch = 40 ft. <br />NOTE: <br />ROOF AREA OUTLINES <br />ARE SHOWN FOR <br />REFERENCE ONLY. SEE <br />PLUMBING PLANS FOR <br />AREAS COLLECTED BY <br />EACH RAINWATER <br />LEADER. AREAS FOR <br />CALCULATION PROVIDED <br />BY PLUMBING PLANS. <br />CswsTm <br />— MEDIA FILTER STORMWATER <br />TREATMENT STRUCTURE <br />(CONTECH MEDIA FILTER <br />SYSTEM - 4 CARTRIDGE LINEAR <br />PRECAST STORMFILTER) WITH <br />DETENTION AND BYPASS <br />LOCATED IN BASEMENT <br />MLDM <br />DRAINAGE MANAGEMENT AREAS (DMA) <br />MPERVIOUSAREA PERVIOUSAREA TOTALAREA TOTALAREA <br />I.D. (SF} (SFI iSF) (AC) <br />DMMi 19,717 0 19,717 0.46 <br />DM&2 8,360 0 9,35a 0.19 <br />h .I <br />F— <br />W <br />LLI <br />F— <br />C) <br />DRAINAGE MANAGEMENT AREA #1 <br />RUNOFF EFFECTIVE AREA <br />SURFACE TYPE AREA (S9 <br />RMP.2: FLOW THROUGH PLANTER <br />COEFFICIENT(SF} <br />SURFACE TYPE AREA (AC) RUNOFF RAINFALL <br />COEFFICIENT INTENSITY (WHR) <br />TREATMENT <br />FLOW RATE (CFS) <br />TREATMENT <br />FLOW RATE (GPM) <br />CARTRIDGE FLOW <br />RATE (GPM) <br />MNIMUM NO. <br />CARTRIDGES <br />ROOF 0.45 to 0.2 <br />0.09 <br />40.4 <br />11.25 <br />4 <br />TOTAL <br />0.09 <br />40A <br />1125 <br />4 <br />NOTE: CALCULATIONS ASSUME A 27' CARTRIDGE HEIGHT AND ASPECIFIC FLOW RATE OF 1 GPWFT°` <br />DRAINAGE MANAGEMENT AREA #2 <br />RUNOFF EFFECTIVE AREA <br />SURFACE TYPE AREA (S9 <br />RMP.2: FLOW THROUGH PLANTER <br />COEFFICIENT(SF} <br />MIN. BMP SIZE <br />PRO. BMP SITE <br />ROOF 8,3E0 1.0 8,360 <br />SONG FACTOR <br />(SF) <br />(SF) <br />TOTAL 8,350 <br />0.04 <br />334 <br />334 <br />GSW/Stubar-Stroeh Engineering Group, Ino. <br />CIVll & StraGtpr;I Engln94rl I jUrgyfng 8 Mipping I Env1rOnmpntg1 Planning <br />Ll.ng Plinning � OgmetrUFti4n M6nspimpnt <br />45 Leveronl Cour( tel: 415.883.8850 <br />Novato, CA 84849 tax: 415.883,9835 <br />httpJlwww.pl2.Cpm 02014 <br />Rev. - Date: 09/12/2018 <br />Job No. 5141701 Scale: 1" = 40' <br />851 MAIN STREET <br />EXHIBIT B <br />STORMWATER TREATMENT MEASURES <br />REDWOOD CITY SAN MATEO CALIFORNIA <br />P:10515141iA1fY%Fl R%1€018.Z U/ 55M41NSTREEITRWC�I CT-�IMNlR112118-02:52PM math 1:1.0303 119 <br />REV: 10-11--18 PR Page 10 of 19 <br />