9900 19TH AVE SE WINCO FOODS 2025-03-27

AQUALIS STORMWATERMANAGEMENT Service Performed For: Winco Foods IN 99M1L City of Everett Permit Review Ever Evered, Ave SE WA sazaa EVERET7 Status: RBVIBWed for Permit (425)7a0-2208 01/19/2023 6:51:48 PM Driver for Corrective Action OAttention Needed O' Action Needed 6Action Required Ocomply with snammlah county reauratons to aroi wati of me sure: so "Vent nooarna WE Summary of Issues AQUALIS recently responded to two separate flooding events at this location in close succession. While responding to a flood we observed water bypassing the upper pond. Water was leaving the upper pond between the retention wall and the fence and entered back into the lower pond. This was Causing the water to cycle through the system and not be processed properly. AQUALIS built a berm to prevent water from flowing around the retention wall and increase the storage capacity of the upper pond as designed by the engineers hired by WinCo. We also adjusted the standpipe at the lower outfall structure. All waste was disposed of in an appropriate oflsite facility. Scope of Work AQUALIS provided the Services and Deliverables) as follows: • Mobilized all labor and equipment to the facility • Maintenance adjustments to standpipe at lower outfall structure • Prepared stormwater basin for bens installation • Backfilled and compacted soil and stone onto area where berm is to be built (40 ft long by 5 It wide) • Laid native seed blend and erosion control matting on all disturbed soils to promote revegetation and stabilization • Disposed of all accumulated debris in appropriate facility 0 Demobilized