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KLEINFEI_DER r 4 SITE RECONNAISSANCE 4.1. METHODOLOGY AND LIMITING CONDITIONS J Mr. Justin C. Elliott, Kleinfelder Staff Geologist, performed a site reconnaissance on September 29, 2006 to assess and photograph present site conditions. The ` approximate site boundaries are shown on Plate 2, "Site Map," and color photographs of the site are presented on Plate 3 (Appendix A). The site conditions discussed below are limited to readily apparent environmental conditions!observed. Kleinfelder was not authorized to eater the interior of the residence located on the subject site. 4.2. GENERAL SITE SETTING The site is the southernmost property on the eastern side of a undeveloped road that extends south from Grant Line Road near the San Joaquin-Alameda County border in Tracy, California (APN 209-07-26). The site encompasses approximately 13 acres and is bisected by a stream that trends southwest to northeast. Currently the site is a fallow field with a building area. El In the northwestern corner of the site is a farmhouse area about one acre in size. One residence, one barn, and one shed are located in this area. A domestic well with an associated pressure tank is located east of the residence. The barn is directly south of the residence. The shed is located east of the barn. North of the barn is a gravel paved driveway. West of the barn on the driveway are two soillstains, and north of the barn on the dirt driveway three soil stains were noted. At least four of the five stains appeared to represent deminimus conditions. These stains were approximately two feet in diameter. Two large trucks and a burn area were located south of the barn. The burned debris including metal, wood and other various household debris. Adjacent to the west of the burn area a soil pile approximately 75 cubic yards in size was noted. A debris pile consisting of a tire, metal and wood debris was located northeast of the residence. Additional debris and a PMT were noted in the northeast portion of the building area. Two cars, a boat, a tractor, and numerous trailers were parked around the onsite structures. A fire hydrant is located near the northwestern corner of the residence. An 4 automotive battery and a 1-gallon antifreeze container was located west of the residence. West-southwest of the barn is a second smaller burn area. Only ash debris was noted in this area. Numerous debris piles are located scattered throughout the residential area of the site. The debris piles consisted of metal debris, wood debris, household rubbish, vinyl fencing, and tires. The approximate 12 acres of the site is a fallow field. A stream trends southwest to northeast across the center of the subject site. A culvert for the stream runs under the unnamed road. An AST that appears to be used for water is located near the eastern 76114.P01/5T06R1065/JCE:Iv Page 9 of 18 ©2006 Kleinfelder, Inc. October 19, 2006