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Ms. Sabrina Fandler <br />City of Everett <br />Public Works Department <br />Engineering/Permit Services -3-/ June 23, 2016 <br />2. The comments below were generated from this project's Stormwater Reviewer. If you have <br />any questions regarding these comments, please contact Jane Zimmerman with the City of <br />Everett Public Works Department (425-257-8885 orJZimmerman@everettwa.gov). <br />a. General stormwater requirements as detailed in the City's 2010 SWMM — the applicant <br />must show that all applicable requirements are being met. <br />i. Access road requirements per Chapter 2.2 of Volume 111 <br />Response: The pond access road is shown per the requirements of Chapter 2.2 of <br />Volume III and a detail has been added to the plans. <br />ii. Pond berm and embankment material and construction specifications as provided by <br />a geotechnical engineer, see standards in Chapter 2.3 of Volume 111 for minimum <br />requirements <br />Response: Comment acknowledged. A note has been added to the plans for a <br />geotechnical engineer to observe pond berm construction. <br />iii. Liner requirements per a geotechnical engineer's material and construction <br />specifications, must include provisions for protection/identification for maintenance <br />activities in the bottom of the pond <br />Response: A note has been added to the pond sections to line the pond with a <br />flexible membrane liner (FML) per geotechnical engineer recommendations. <br />iv. Pond fencing in accordance with Chapter 2.5 of Volume 111 <br />Response: Pond fencing is now shown and called out in plan and profile views. <br />v. Overflow requirements per Chapter 2.9, Volume 111 and the calculations necessary to <br />show the standards are being met. A secondary inlet to the flow control structure <br />must be provided in accordance with Chapter 2.9 and the primary overflows to the <br />two drainage basins must be proportioned in the same way as the design release <br />rates. In addition, due to the height of the pond berm on the east side, an emergency <br />spillway will be required. The location and design of the emergency spillway must be <br />specifically reviewed and approved by the project's geotechnical engineer. <br />Response: Comment acknowledged. Overflows are now shown per city <br />requirements and calculations have been added to the storm drainage report. <br />b. More specific plan/report comments: <br />i. A minimum of 6" of sediment storage must be provided in the bottom of the pond <br />Response: The pond has been revised to provide 1-foot of sediment storage. <br />ii. The grading for the pond must stay outside of the NGPE and all pond contour lines <br />must close on the buildable area of the site, outside of the NGPE line. The proposed <br />