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• Phase I Environmental Assessment 152 Frank West Circle - Stockton, CA March 31, 1993 Site Inspection AS1 AMw SCIENCE AND ENUINEENINO INC. Ole Page 4 The Site was inspected on March 10, 1993. Alit lough CWI is no longer in business, it appears that CWI left virtually everything in-place, including: office equipment, books, and files; processing equipment, tools, and chemicals; circuit boards; and containerized solid and liquid waste. The Site is occupied by a single -story, 25,864 square -foot, concrete tilt -up wall building with an on -grade, concrete slab floor, and a flat, asphalt coated plywood roof, asphalt -surfaced pavement which is used for parking, storage, and vehicle access; two storage sheds; a covered hazardous waste treatment system; and landscaped borders containing grass, trees, and plants. A Site Inspection Summary describing the environmental condition and contents of each room within the building and each area outside the building is at Appendix A. During the site inspection, floor tile and ceiling tile samples were collected and tested for asbestos content. Asbestos was not detected in the ceiling tile, however, 3% chrysotile asbestos was detected in both floor file samples and 2% chrysotile asbestos was detected in the mastic layer which adheres the tiles to the floor in one of the floor tile samples. The asbestos detected in the floor tiles and mastic is non - friable. Undamaged floor tiles do not create a health hazard, however, if the tiles are damaged, asbestos may be released into the air. There are a limited number of floor tiles (less than 50) throughout the entire facility that have previously been damaged and may require replacement. No evidence of floor drains, french drains, dry wells, underground tanks, or PCBs. The plant life appears to be healthy and free from "environmental stress." Storm water run-off from the asphalt -surfaced areas flow into a gutter which parallels Frank West Circle or into one of three storm water drains, located throughout the Site.