8525 EVERGREEN WAY BURGER KING 2021-05-10

• Apply a Ksat correction factor of 2 or 4 to the Soil Layer 1 "SWMMWW 12in/hr"per page 7-15, Volume V in the SWMMWW. Bioretention is no longer being proposed. • For roof areas fully infiltrated via Downspout Full Infiltration(BMP T5.10A),those areas need not be entered into the model. See Volume III, Section 3.1.1 of the SWMMWW. Bioretention is no longer being proposed. • The bioretention planter detail (Sheet 3) shows an underdrain, but the modeling does not account for the underdrain. Update the model to reflect the actual designs.Note that this, along with addition of liners and update bypass areas, may result in significant discrepancy in BMP sizing. Bioretention is no longer being proposed. o MR#6: Runoff Treatment o Provide a listing of the water quality menus used (Chapter 3, Volume V of the SWMMWW). Both basins are exempt from water quality under the new proposal. See revised drainage report. o Document whether the volume treated meets or exceeds the 91%treatment requirement based on the modeling. Both basins are exempt from water quality under the new proposal. See revised drainage report. o Document how bypass areas were handled in the modeling and how the treatment requirement is met even with the bypass areas proposed. Both basins are exempt from water quality under the new proposal. See revised drainage report. o For MR#8: Wetlands Protection o The City's previous comments were not addressed. o The applicability of MR#8—Wetlands Protection is not determined based on whether wetlands exist on or adjacent to the site,but rather based on whether the project site discharges to wetlands. MR#8 has been addressed in the new drainage report. See new drainage report. PO Box 1478 • Everett, WA 98206 • Phone: (425) 303-9363 Fax: (425) 303-9362 • Email:info@insightengineering.net (y/�