ARCHIVED REPORTS_PHASE II ENVIRONMENTAL SITE ASSESSMENT

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W GIK • Sowuthwvest;, ]Inc. In August 2007 when WGR conducted the site review for the Phase I investigation, numerous stockpiles of rubber tires were observed on the site. There appeared to be more than the 400 tires the Learner plant manager reported were allowed by the County tire recycling program. Additionally, many old vehicles in various stages of disrepair, including a damaged tanker truck, were observed, particularly in the eastern portion of the site. When the Phase II investigation was conducted the tire stockpiles and old vehicles were no longer present. 5.0 SITE HISTORY 5.1 Current Usage Learner operates a manned scrap metal recycling facility on the site. They purchase a wide variety of ferrous materials from outside sources, sort and process the metals and sell them to off-site buyers. The written acceptance policy provided by Learner in December 2007 states that they accept mixed iron, including closed cylinders which have been cut in half and had the valves removed and automobile and truck rear-end assemblies and drive shafts that have been cut to be purchased as prepared iron. The written policy also states they accept tin, including car tin that has been cut and stripped of non-metallic material and inspected by a Learner employee • for mercury. Fifty-five-gallon drums that have one end open and have been triple-rinsed are reportedly accepted as are motor blocks with filters and hoses removed, oil drained and holes cut in the oil pans. According to the written acceptance policy, white goods such as washers, dryers and refrigerators have not been accepted since January 1, 2006. Materials for recycling are typically delivered to the facility by transport truck. The truck drivers are reportedly responsible for separating and distributing their loads to the various stockpiles on the site. During the course of this investigation, materials were observed being offloaded onto the site from personal vehicles, including pick-up trucks. After materials are brought on site, Learner staff further sort, consolidate, cut and/or hydraulically compress the metal into cubes. The metal is stockpiled on site and eventually loaded into trucks, shipping containers or railcars for transportation off site. 5.2 Historical Usage The site history and previous investigative work conducted on the property are fully discussed in the referenced Phase I ESA report by WGR. This information is summarized in the following sections. The United States Navy is the first confirmed occupant of the property. A 1952 United States Geological Survey (USGS) topographic map identifies the site and surrounding • area as U. S. Government Reservation land; by 1968 the site area is no longer identified as 704. PRI.05 4 July 21, 2008