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I <br /> Paul McKee <br /> From: Mark Sadler <br /> Sent: Thursday, March 22, 2018 5:43 PM <br /> To: Paul McKee <br /> Subject: FW: Riverfront Development Grading SWPPP Comments <br /> Comments on the Everett Riverfront Development Stockpile Plans, March 2018 <br /> General Comments: <br /> 1. Public Works Maintenance Division is in progress of checking on the Consent Decree Development Checklist <br /> process for this project. Applicant should expect the checklist to be prepared and submitted to Ecology for <br /> their project approval. <br /> 2. Project appears to be over the threshold for a Construction NPDES permit issued by the Dept. of <br /> Ecology. Applicant shall determine and let the city know and provide copies of Ecology submittals. <br /> 3. Potential impacts due to the stockpiling,whether additional settlement, impacts to the cement modified soil <br /> cover and landfill cover,site drainage, and landfill gas migration should be considered by the applicant. <br /> Drawing Set <br /> 1. Did not see access roads to the stockpiles. Loaded trucks likely to cause significant rutting and impacts to <br /> existing soil cover. May need geotextile supported rock access for trucks once off the spine road. Applicant <br /> needs to assess site access to the stockpiles. <br /> 2. Applicant needs to maintain spine road daily throughout work. Suggest coordinating with Traffic on how <br /> trucks and townhome resident access and safety is maintained. And site to be closed to the public during <br /> the work -flaggers should be considered. <br /> 3. Stockpile work needs to be coordinated with the Consent Decree requirements to eliminate ponding water <br /> and for adequate site drainage. This is needed prior to the stockpiles work,during the work—where water <br /> is managed at all times, and after the stockpile is completed. <br /> 4. Applicant will maintain stockpiles,TESC,and drainage features throughout construction and throughout the <br /> duration of the stockpiles. <br /> 5. Silt fence installation—no reference to a detail. Posts for fence installation need to be short enough to <br /> avoid penetrating into waste. <br /> 6. TESC Dwgs—did not see detail on east side how drainage is treated along east slopes. Manage drainage to <br /> not cause rutting or slope impacts,or impacts once flow reaches toe ditches. <br /> And please see additional comments from Halley Kimball below. <br /> Thanks <br /> 1.1*.nri. <br /> Mark Sadler, P.E. <br /> Maintenance Superinendent <br /> Public Works <br /> P:425.257.8967 / C:425.210.0103 <br /> E: msadler@everettwa.gov <br /> 3200 Cedar Street, Everett WA 98201 <br /> www.everettwa.gov <br /> El [7:] <br /> C.)122 <br />