WA ST Dept of Ecology 8/27/2022 - Laserfiche WebLink

DocuSign Envelope ID:82CF488E-D010-423F-A510-7E548D1 F9C38 State of Washington Department of Ecology Page 2 of 44 Agreement No: WQC-2022-EverPW-00030 Project Title: Water Quality Retrofit/Improvements;City of Everett's Programmatic Effort Recipient Name: City of Everett Site PC1-5:This site is behind the business park at the southeast corner of 75th Street SE and Evergreen Way. Runoff from this residential and commercial area flows to an existing detention facility and then is discharged to Pigeon Creek Tributary Number 1.The RECIPIENT will retrofit the existing facility by installing an Emerging Stormwater Treatment Technologies General Use Level Designation(TAPE GULD)pretreatment device and wetland plantings within the pond to improve this facility to achieve improved treatment. Total contributing area is approximately 13.1 acres. The RECIPIENT has an existing easement for inspection and maintenance of this facility. Site PC1-4:This site is a RECIPIENT owned lot at the southwest corner of the West Mukilteo Boulevard and Elm Street intersection. The drainage area that flows to this site is residential and commercial land that discharges directly into Pigeon Creek Tributary Number 1 without any treatment. The RECIPIENT will install a TAPE GULD pretreatment device to treat this runoff in a vacant portion of the lot. Total contributing area is approximately 1.1 acres. Site GW-2:This site is on the north side of Mukilteo Boulevard in Harborview Park. The RECIPIENT will install a bioretention facility or similar low impact development alternative to treat residential runoff that flows to Glenwood Creek from south of Mukilteo Boulevard. This facility will preserve the park's current scenery and provide opportunities for water quality education. Total contributing area is approximately 7.8 acres. Site EW-1 :This site is at the south side of Sound Avenue,midway between 56th Street SW and the Sound Avenue dead-end. The RECIPIENT will convert two ponds into a two-cell wet ponds to improve treatment and storage capacity.These retrofitted facilities will treat runoff from Second Avenue,residential,and commercial areas that flows into Edgewater Creek. Edgewater Creek currently flows through existing ponds. The RECIPIENT will not modify the inlet and outlet of the creek through the pond and will not modify the overall footprint of the pond. The RECIPIENT will work within the existing footprint to install a berm and wetland plantings to the west of the creek inlet. Total contributing area is approximately 2.1 acres. The RECIPIENT owns the lot with the pond to the north and has an existing easement for inspection and maintenance of the pond to the south. Overall Goal: This project will help protect and restore water quality in Washington state by reducing stormwater impacts from existing infrastructure and development. Template Version 12/10/2020