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1 <br />Consent Decree Exhibit C <br />The existing Animal Shelter, at the northwestern comer of the landfill property, was constructed <br />in 1996 with approval from the City building department, the City Fire Department and Ecology. <br />Building construction details included a landfill gas barrier consisting of a geomembrane liner <br />and sand vent layer beneath a slab foundation. The area on which it was constructed has <br />shallow waste thickness. <br />Established in the late 1970s, the City Yard, accessible only to City employees, is used to store <br />construction materials such as gravel, topsoil, and drainage and sewer pipes. Large equipment, <br />such as street sanders, is also stored on -site. The only structure is a simple covered shelter <br />(approximately 20 feet by 120 feet), used to protect a sand and salt stockpile. The City Yard is <br />also used as a recycling center for non -hazardous materials that the City has excavated over <br />the course of work elsewhere in Everett. Equipment present for this purpose includes sifters <br />and rolling drums that are used for classifying the material. Stormwater run-off from the City <br />Yard is collected and sent to the sanitary sewer system for treatment. <br />The Transfer Station, operated by Snohomish County on property leased from the City, was <br />built nearly 25 years ago in the northeast portion of the Site. The area on which it was <br />constructed is composed of some of the thicker and oldest refuse fill. The facility consists of a <br />pile -supported structure, employee lunchroom trailer, truck scale and scale house, and <br />associated gravel surfaced and asphalt paved areas. Approximately 50 steel piles were <br />installed for the foundation, through the waste to the bearing layers below. <br />Existing utilities serving the Site are minimal and primarily support the existing facilities. These <br />utilities include underground water, electrical, and sewer lines. The majority of the underground <br />utilities are located along the perimeter of the Site. <br />Currently, the City maintains the unused portions of the Site. In conformance with Ecology <br />requirements for landfill closure, the landfill soil cover is graded to a minimum of 2 percent (33 <br />percent maximum), and hydroseeded for grass establishment. A secured fence surrounds the <br />unused portions of the Site. <br />2.4 REGULATORY HISTORY <br />Following the tire fires in 1983 and 1984, Ecology asked the City to perform an environmental <br />characterization of the tire fire areas. The City conducted a preliminary assessment in 1985 and <br />a RI/FS in 1986. In 1989, the year MTCA was enacted by the State, Ecology performed a <br />Preliminary Assessment of the Everett Landfill/Tire Fire Site and listed the Site on the site <br />register. Ecology subsequently notified Potentially Liable Parties, including the City and BNSF. <br />In the following year, 1990, Ecology issued a Consent Order for ash sampling and investigation <br />of the Tire Fire Site. An Enforcement Order followed after 4 years of sampling and studies that <br />led the way for two Interim Actions, completed by the City, to address regrading, capping, and <br />leachate collection. Refer to Table 2-1 for a comprehensive list of regulatory actions. <br />2.4.1 Interim and Independent Cleanup Actions <br />The first Interim Action construction, "Everett Landfill Site Grading," began in the fall of 1995. <br />This project provided for improvements to the site grading and the control of surface water. The <br />entire Site (except for the two tire fire areas) was graded to allow the collection and control of <br />FINAL - March 2001 2-3 Everett Landfill Tire Fire Site <br />Cleanup Action Plan <br />1 <br />