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` KLEINFELDER ` UST Nos. 4 and 5 include water, although they are believed to have previously contained product AR-4000. b, Kleinfelder understands that Granite desired to evaluate soil beneath and in proximity to these five tanks for the potential presence of asphalt related compounds and obtain a .,no further action" letter from San Joaquin County Environmental Health Department 60 (EHD). Kleinfelder also understands Granite desires to preferentially close these tanks in place, since two 30,000 gallon operational ASTs are located on top of, or near these five USTs. The following is a summary of Kleinfelder's field activities based on a scope of work agreed to between Granite Construction Company and Kleinfelder titled "Proposal to r. Conduct Environmental Services, Pre-Abandonment Underground Storage Tank Assessment, 10500 South Harlan Road, French Camp, California," dated November 29, 2007 (File No. 02001 PROP.ENV/ST07P294). The initial scope of work included one test �• pit near each of five asphalt USTs in proximity to exposed exterior tank lids (UST Nos. 1, 2 and 3) and near surface secondary containment units and dispenser area near the southern end of UST Nos. 4 and 5. Sampling locations near UST Nos. 1 and 2 were 6 also selected based on asphalt spill areas noted near the tank lids. Soil samples were scoped to be collected as close to the sides and bottom of each of the five tanks as permissible given site conditions at depths of approximately 8 and 15 feet below ground surface (roughly near the middle and bottom of the USTs). The following is a summary of Kleinfelder's field sampling activities, soil sampling analytical results, and findings. %W FIELD ACTIVITIES bw Mr. Brian Stringari, Staff Engineer and Mr. Doug Heard, Senior Geologist for Kleinfelder visited the site on December 4, 2007 to set up and begin soil sampling activities near an asphalt UST cluster area for evaluation of potential asphalt related constituents in soil ` (see Plates 1 and 2). Soil sampling began on December 4 and was completed on December 5, 2007. Granite Construction Company provided a backhoe and operators ` to facilitate soil sampling by removal of concrete and overburden material. Mr. Brian Hoffman, Environmental Coordinator and Mr. Brett Smoot, Plant Engineer from Granite were present during portions of the work and during earlier site visit/s when evaluating ` site conditions and discussing proposed field activities. The original scope of work was altered slightly based on limited access and safety considerations near the north end of UST Nos. 1 and 2. The result was that four and not five test pits were excavated near the five USTs. The original scope of work included one test pit per each of the five UST locations. Two test pits were proposed ` just north of UST Nos. 1 and 2. However these two areas could not be accessed using a backhoe and an alternate test pit location was selected between these tanks near their exposed tank lids. top i 90163.T03/ST07R1061 January 3,2008 0 2007 Kleinfelder Page 2 of 7 V