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J t `yy 12 January 2004 AGE-NC Project No. 03-1079 Page 2 of 5 Approximately 1,150 cubic yards ofpetroleum hydrocarbon impacted soil were excavated to a depth of approximately 45 feet below surface grade from the former UST site in March 1994; soil samples from the excavation sidewalls and bottom were below detection limits for all analytes. The contaminated soil was stockpiled on the site, then moved to a ranch in Escalon. The soil was tested by AGE in April 1995; subsequent bioremediation lowered the contamination to a level that would be accepted by a landfill and the soil was hauled to Forward Landfill in October 1995. DRILLING AND SAMPLE COLLECTION On 06 and 14 November 2003, five soil probe borings (B-1 through B-5) and one hydro-punch ground water sample(HP-1-65')were advanced at the site as part of assessment activities. The field work was conducted as outlined in the AGE-prepared,Phase II Site Assessment Work Plan, dated 15 October 2003. Four soil probe borings(borings B-2 through B-5)were located adjacent to each hydraulic lift;these borings were advanced to depths of 15 feet below surface grade(bsg).A fifth soil probe boring(B-1) was advanced to a depth of approximately 5 feet bsg near the waste oil storage shed. The boring locations were chosen based on potential areas of concern identified in AGE's Phase I Environmental Site Assessment investigation.Based on conversations between the EHD,the property owner,and the prospective buyer,AGE advanced an additional hydro-punch boring in a former UST excavation to determine if ground water was impacted by hydrocarbons. Soil probe borings B-1 through B-5 were advanced utilizing a truck-mounted Geoprobe 5400, equipped with 1.125-inch diameter probe rods with an attached 2.15-inch diameter soil sampler, using direct push technology. The borings B-2 through B-5 were advanced vertically to a depth of 15 feet bsg and B-1 was advanced to 5 feet bsg for collection of soil samples. Soil samples were collected at 5-foot intervals beginning at 5 feet bsg to the total depth of each boring; boring B-1 was sampled at 5 feet bsg and borings B-2 through B-5 were sampled at 5 feet, 10 feet and 15 feet bsg. Each sample was collected utilizing a 1.125-inch Geoprobe soil sampling assembly loaded with four six-inch brass sleeves. After collection, the ends of the second brass sleeve were covered with Teflon sheets, capped and sealed with tape. The sleeve was labeled with soil probe boring location, depth, time, date and sampler's initials and then placed in a chilled container. In addition to the above sample preparations, a soil sample from one of the three remaining sleeves was field-screened for the presence of volatile organic compounds using an organic vapor meter calibrated to 96 ppm of isobutylene(OVM:Thermo Environmental Instruments, model 580B). Following soil sample collection, all probe borings were backfilled to surface grade with Portland cement.