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PLN17-0034 311 MACARTHUR BOULEVARD - 20-Unit Townhome Condominium Development - Zoning Amendment, Planned Development, Tentative Map, Site Plan Review <br />EXHIBIT O - PRELIMINARY C.3 STORM WATER CONTROL PLAN <br />L <br />R <br />P / C <br />ST 817 Arnold Drive, Ste. 50Martinez, CA 94553Ph: (925) 476-8499 www.apexce.netDATEAPPBYREVISIONSNO.17028PROJECT #: <br />L3 L2 <br />L2 <br />C2 <br />C2 <br />L3 <br />L2 <br />L2 <br />L1 <br />C2 <br />L2 <br />P2 <br />P3 <br />BR-2BR-3 <br />BR-1 <br />C2 <br />C1 <br />P3 <br />R3 <br />L2 <br />R3 R2 <br />R1 <br />R2 <br />R2 <br />L2 <br />R2BLVDBROADMOOR <br />4,898 1960.041.04,898R3 390 401BR-3 <br />777 831BR-2 <br />593 240.040.15,930L2 <br />440 180.041.0440C3 <br />7,614 3057,614 0.041.0P2 <br />138 613780.040.1L1 <br />2,574 1032,574 0.041.0C2 <br />3,616 1453,616 0.041.0R1BROADMOOR BLVD.MACARTHUR BLVD. <br />H <br />E <br />R <br />M <br />A <br /> <br />C <br />O <br />U <br />R <br />T <br />SELF TREATED AREA <br />(PERVIOUS SURFACE) <br />TOTAL: 10,354 SF <br /> 1,485 SFBIO-RETENTION AREAS: <br />TOTAL: 33,191 SF <br />PAVEMENT: 11,876 SF <br />PERVIOUS <br />IMPERVIOUS <br /> 8,869 SFLANDSCAPING: <br />AREA BREAKDOWN <br />CONCRETE: 4,147 SF <br />ROOF: 17,168 SF <br />6148 <br />1,133 <br />1,478 <br />BMP TRIBUTARY BOUNDARY: <br />3468,6548,654 0.041.0R2 <br />NEW IMPERVIOUS AREA <br />(PAVEMENT/CONCRETE) <br />45 <br />4,262 <br />1,133 <br />1700.041.04,262P3 <br />195 <br />MINIMUM <br />AREA <br />(SF) <br />BR-1 253 <br />0.040.1L3 <br />0.041.0C1 <br />IMP <br />AREA <br />NAME <br />PROPOSED <br />IMP AREA <br />(SF) <br />REQUIRED <br />IMP AREA <br />(SF) <br />DMA <br />NAME <br />IMP <br />SIZING <br />FACTOR <br />DMA AREA <br />x <br />RUNOFF FACTOR <br />DMA <br />RUNOFF <br />FACTOR <br />DMA <br />AREA <br />(SF) <br />BIO-RETENTION AREA SUMMARY <br />BIO-RETENTION AREA <br />1. DISPERSE RUNOFF TO <br />VEGETATED AREA <br />2. PERVIOUS PAVEMENT <br />(PAVERS) <br />3. CISTERNS OR RAIN BARRELS <br />4. BIO-RETENTION FACILITY <br />OR PLANTER BOX <br />RUNOFF REDUCTION <br />MEASURES SELECTED <br />33,191 SF <br />33,675 SF <br />29,110 SF <br />4,081 SF <br />20 UNITS <br />(MULTI-FAMILY RESIDENTIAL) <br />PROJECT DATA FORM <br />319-311 MACARTHUR BLVD. <br />SAN LEANDRO, CA <br />TOTAL POST-PROJECT <br />IMPERVIOUS SURFACE AREA <br />TOTAL PRE-PROJECT <br />IMPERVIOUS SURFACE AREA <br />TOTAL REPLACED IMPERVIOUS <br />SURFACE AREA <br />TOTAL NEW IMPERVIOUS <br />SURFACE AREA (SQ. FT.) <br />TOTAL PROJECT SITE <br />AREA (ACRES) <br />PROJECT TYPE AND <br />DESCRIPTION <br />1.0 ACRES (43,545 SF) <br />SAN LEANDRO CREEK WATERSHED <br />311 MACARTHUR BLVD, LLC <br />BROADMOOR VILLAGE (TRACT 8422) <br />PROJECT WATERSHED <br />NAME OF DEVELOPER <br />PROJECT LOCATION <br />PROJECT NAME/NUMBER <br />C.3 STORM WATER CONTROL LEGEND <br />ROOFTOP <br />(IMPERVIOUS SURFACE) <br />LANDSCAPE AREA <br />(PERVIOUS SURFACE) <br />DRAINAGE MANAGEMENT AREAS (DMA): <br />C3 <br />C2 <br />P2 <br />BR-1 <br />69