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.� ' Architecture <br /> Engineering An Employee-Owned Company <br /> Environ menta I Stormwater Management Report <br /> . Land Surveying <br /> Companies <br /> Infiltration (L-4) <br /> applicable X not applicable <br /> Infiltration Trench (L-5) <br /> applicable X not applicable <br /> Porous Pavement Filter (L-6) <br /> applicable X not applicable <br /> Vegetated (Dry) Swale (L-7) <br /> applicable X not applicable <br /> Grassy Swale (L-8) <br /> applicable X not applicable <br /> Grassy Filter Strip (L-9) <br /> applicable X not applicable <br /> Constructed Wetland (C-1) <br /> applicable X not applicable <br /> Extended Detention Basin (C-2) <br /> applicable X not applicable <br /> Wet Pond (C-3) <br /> applicable X not applicable <br /> Proprietary Treatment Controls (C-4) <br /> applicable X not applicable <br /> Per the FEMA Flood Insurance Rate Map Number 06077CO49OF for San Joaquin County, <br /> California, map effective date: October 16, 2009, the site resides inside Zone AO (area of special <br /> flood hazard). The floodplain has a depth of 1 foot. The FEMA Flood Insurance Rate Map is <br /> included in Appendix A for reference. <br /> The site soils in the proposed development area are identified by the United States Department of <br /> Agriculture (USDA)Natural Resources Conservation Service (MRCS) as two categories: the first <br /> is Hollenbeck silty clay, with 0 to 2 percent slopes. The hydrologic soil group is categorized as <br /> Group C. The second soil category is Jackson clay with 0 to 3 percent slopes. The hydrologic soil <br /> group is categorized as Group D. A copy of the USDA NRCS Hydrologic Soil Group Map is <br /> included in Appendix B for reference. <br /> 220 Norwood Park South,Suite 201 • Norwood,MA 02062 • T(781)619-9500 - F(203)630-2615• www.blcompanies.com <br /> 4 <br />