2020/07/15 Council Agenda Packet

State of Washington Department of Ecology Agreement No: TCPRA-1921-EverPW-00080 Project Title; Everett Landfill Tire Fire Recipient Name; CITY OF EVERETT ECOLOGY and the RECIPIENT have been working together since 1994 to clean up the Everett Landfill Tire Fire Site, The Site has now met the cleanup standards under the Model Toxics Control Act (MTCA). From about 1917 to 1974, parts of the Site were used for landfill purposes. At first, the Site was used as a burning dump, a scrap metal recycling and burial yard, and a municipal landfill. The southern portion of the Site was the last active fill area. November 1974 was the last month that waste was received. The next year, the whole landfill was graded and closed in compliance with the regulations in effect at the time (WAC 173vr301). A 12-inch soil layer was placed over the waste and was seeded with grass. In 1977, a commercial recycling operation began storing old rubber tires on the central and eastern half of the Site. After this, there were two fires in the tire piles, one in 1983 and one in 1984. Contaminants of concern at this Site are total petroleum hydrocarbons (TPH), polycyclie aromatic hydrocarbons (PAH), bis (2-ethylhexyl) phthalate, and metals. Additional concerns were for control of landfill gas in the then current structures on and around the Site. The RECIPIENT completed two Interim Actions at the Site under MTCA, but before a Consent Decree was signed. The first Interim Action was the Everett Landfill Site Grading in 1995. This project improved the site grading and the control of surface water. The RECIPIENT graded the entire Site (except for the two tire fire areas) to collect and control surface water and to reduce leachate. The RECIPIENT then put an extra two feet of soil cover over the waste areas, and improved site drainage. The second Interim Action was in 1997 and 1998. During this projecfi, the RECIPIENT: • Installed a geomembrane cover on the eastern side slopes of the landfill. • Added a lined leachate collection trench and transmission system for treatment at Everett's Waste Water Treatment Plant. • Added two leachate pump stations. • Installed a leachate control force main and access road. • Installed site fencing. • Added site cover. • Controlled storm water on the eastern portion of the site. • Removed and disposed of sediments in ditches around the site. • Removed and disposed of the tires and tire fire ash that remained. In 2001 the RECIPIENT signed a Consent Decree, No. O1 2 Q3640 6, with ECOLOGY for a Remedial Investigation/Feasibility Study and Cleanup Action Plan. The Consent Decree allowed fox redevelopment of the Site. The RECIPIENT did further landfill gas monitoring from 2001 to 2003 and installed a perimeter landfill gas conirol system in 2004, and improved it in 2006 and again in 2012. The Snohomish County's onsite Everett Transfer Station was closed and tom down in 2004. In 2006 the RECIPIENT built a bridge to pass 41 st street over the existing rail lines west of the Site. It also includes landfill gas control for the part of 41 st street on the landfill. In 2007 and 2008 the RECIPIENT'S animal shelter was also relocated off site and the building was demolished, leaving no structures on site. The Consent Decree for the Everett Landfill was prepared to allow site redevelopment, which is being completed by a private developer. The timing of the grant and work scope is critical to the redevelopment of the Site. The Site was first purchased by a developer in 2008; a second developer purchased the Site in 2013, with current redevelopment steps Page 2 of27 Template Version 10/30/2015