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9 <br />Plans <br />Sheet 2 <br />Show rock pad details per DCSS4-2.5 requirements for outfalls. <br />10 <br />Plans <br />Sheet 2 <br />Refer to the setback requirements in DCSS 4-4.1(3) and the <br />Manual. Provide a letter from the geotech addressing the <br />following: <br />• Whether lateral flow from the perforated stub -out will <br />impact the foundation wall. (Infiltration facilities require <br />a 100 ft setback from retaining walls unless the entire <br />facility is located at a lower elevation than the base of <br />the wall.) <br />• Whether lateral flow from the infiltration trench will <br />impact the house. <br />11 <br />Plans <br />Sheet 2 <br />Revise the infiltration note to reflect that at 1430 sf of roof <br />runoff is required to flow to the infiltration trench. The note is <br />needed so that there is under 5,000 sf of project effective <br />impervious surface, assuming the infiltration trench design <br />meets BMP T5.10A or PIT testing is used to design BMP T7.20. <br />12 <br />Plans <br />Sheet 2 <br />The driveway drain cannot connect to the perforated stub -out <br />due to plugging concerns. Also, bringing in non -roof runoff may <br />make it a UIC. <br />13 <br />Plans <br />Sheet 2 <br />Include a detail for the pump, and include information required <br />by DCSS4-2.3(10). <br />Page 3 of 4 <br />