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Basic Dispersion, and then Perforated Stub -Out Connections. Full Dispersion is infeasible <br />because the required native vegetation preservation could not be achieved for the LDMR <br />zoned project. Full Infiltration is also not feasible as the design infiltration rate is only 0.21 <br />in/hr which is less than the recommended 0.3 in/hr. Also, Glacial Till was observed at 1.5- <br />ft below ground surface. Please refer to the Geotech Report attached under Section VI. <br />Basic dispersion is not feasible due to the lack of required vegetated flowpath. Perforated <br />stub -out connections are infeasible because they cannot be located under impervious <br />surfaces. The roof drains will be directly connected into the existing drainage system along <br />Wetmore Ave. The following BMPs shall be applied to the other hard surfaces: Full <br />dispersion, Infiltration, Permeable Pavement, Bioretention, and then Dispersion. Full <br />Dispersion is infeasible because the required native vegetation preservation could not be <br />achieved for the LDMR zoned project. The driveways for both lots will be permeable <br />pavement. Post -Construction Soil Quality and Depth BMP T.5.13 is proposed to provide <br />onsite stormwater management for the pervious areas of the site. <br />Insight Engineering Co. — Stormwater Site Plan 05/31/2022 <br />-4- <br />