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1 <br /> SECTION III: SITE DEVELOPMENT PLAN W/ON-SITE <br /> STORMWATER MANAGEMENT <br /> 1 The proposal is to construct a parking lot facility. The access to the site will <br /> 1 from the Sonrise Christian Center. Flow control requirements will be met by an <br /> underground R tank(36.75-ft by 145.75-ft by 3.54-ft)which will be located within the <br /> 1 parking lot. The R tank will provide a total storage capacity of 18,006 CF. Water quality <br /> for the site will be provided by a bioretention upstream of detention. The outlet from the R <br /> 1 tank will be connected to the wetland on the western portion of the site. <br /> 1 Per Minimum Requirement#5 (Section 2.5.5 of the SWMMWW), the following <br /> BMP's shall be applied to the other hard surfaces: Full dispersion, Infiltration, Permeable <br /> Pavement, Bioretention, and then Dispersion. Full Dispersion is infeasible because the <br /> required native vegetation preservation could not be achieved. For infiltration, as per the <br /> 1 Geotech report, the groundwater was encountered at a depth of 2'-3' and that the required <br /> vertical separation for such facilities could not be achieved. Permeable pavement and <br /> bioretention are not feasible because required vertical separation for such facilities could <br /> not be achieved. Basic Dispersion is not feasible because the required vegetated flow path <br /> could not be met. Post-Construction Soil Quality and Depth BMP T.5.13 is proposed to <br /> provide onsite stormwater management for the pervious areas of the site. <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> Insight Engineering Co. -Stormwater Site Plan 12/20/2018 <br /> - 12- <br /> 1 <br />