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Minor Subdivision, SUP, and Site Plan Review; Silver Lake Smile Planning Commission Report; 8-21-18 Page 9 Sanitary System(s):  As a condition of approval, the following Engineering comments (also on the memo dated 8/7/18) shall be addressed: 1. Outside City, sewer and water permit is required for sanitary and water service connections. 2. An existing service stub was provided for this lot. It is located at 201 feet west of the downstream MH. The length and condition of the stub is unknown. Plans should use this location for sewer connection and if re-use is desired, line must be televised to verify condition of pipe. Plans for saw cutting Palmer Dr pavement and sidewalk should be updated to this location. Replacement of these materials should be equal to or greater than the existing sections. Storm water / Grading / Erosion:  As a condition of approval, the following Engineering comments (also on the memo dated 8/7/18) shall be addressed: 1. Add inlet protection to catch basin(s) Silver Lake Road and Palmer Drive (NE corner) where dirt may track during construction. 2. Soils below infiltration basin not ideal for infiltration. Provide a maintenance pipe from IB to rock swale with plug that can be removed when draw down is required or during plant establishment period. 3. Rock swale will be unusable during winter, and the overflow is shown as entering the BP site through the one way. Then the rock swale dumps over the sidewalk on the south. The plans should include a concrete spillway at the cross gutter exit and a concrete spillway connect the rock swale to the 33.60 curb cut at the north. Civil to show route this water will take through BP site to insure no adverse impacts are realized. Existing drainage entered BP site at 32.5, staff encourages applicant to use this route vs. over the sidewalk. 4. If sidewalk overflows are used, the plans must include concrete instead of rock adjacent to the walk. 5. The overflow from the IB is labeled incorrectly, it should state 33.75 not 34. The HWL for the IB is 934.41 and a 34.5 contour is shown. Grades along the building at this location will equal the floor elevation so the plans should indicate raising grade along this wall and waterproofing as required. 6. The ME elevations on C3 should be adjusted on the SW corner (three state 933.4 and none of them match what was surveyed). 7. Additional spot elevations need to be shown for eastern ADA ramp and the overland flow to the east from 33.45 towards Palmer Drive. 8. Show discharge points for roof drains and how’/where they discharge.