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*401 was aerated under permit from the San Joaquin County Air Pollution Control District (APCD) and, subsequent to verification of successful remediation through sampling of the stockpiled soil, was used to backfill the excavation. The work was performed under the direction of the APCD and local fire district after the San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) and the California Regional Water Quality Control Board (CRWQCB) indicated that their oversight would not be provided. FIELD METHODS Ground Zero supervised the drilling of three soil borings (SBI, S132, and S133). SBI was advanced in the vicinity of the former tanks and dispenser island. S132 and S133 were located progressively further from SBI in the assumed downgradient direction, northeast of the former tanks. The location of the borings are shown on Figure 2. Drilling was performed by V&W Drilling (C57-710678) under permit from PHS/EHD. Ms. Linda Turkatte of PHS/EHD was present to observe field activities. Boring S131 was initially drilled to approximately 20 feet below grade. Soil samples were collected at five foot intervals beginning at 5.0 feet below grade for characterization purposes. Groundwater was noted on the sampling shoe after driving the sampler to approximately 21.5 feet below grade. The sample from the interval of 20.0 to 20.5 feet below grade was collected into a pre -washed brass tube, sealed with teflon tape and plastic end caps, labelled, placed on ice, and transported under chain of custody to Argon Laboratories (DHS -1873) in Ceres, California for analysis. Subsequent to soil sampling, a discrete water sample was collected from SB1 using a Hydropunch II water sampler. The water sample was collected by driving the Hydropunch II implement into the water table using a 140 - pound drop hammer and allowing groundwater to flow into the screened portion of the sampler under natural hydrostatic pressure. The water sample was collected using a pre -washed bailer into appropriate containers. The sample was labelled, placed on ice, and transported to Argon Laboratories for analysis. Hydrocarbon odors were noted in the soil sample collected at 20 feet below grade and in the water sample collected from boring SB 1. A log of boring SB 1 is included in Attachment B. Based upon the observed presence of hydrocarbons in soil and groundwater samples collected from SB 1, Ground Zero advanced borings S132 and SB3 to collect soil and groundwater samples in the assumed downgradient direction of groundwater flow, northeast of the former tanks. Due to time limitations and per Ms. Turkatte's approval, lithologic logs were not compiled for borings S132 and S133. Sampling intervals and brief descriptions of soils encountered are included in field boring logs, Attachment B. S132 was located approximately 28 feet northeast of S131, and S133 was located approximately 17 feet northeast of S132. One soil sample was collected from each boring at approximately 25.5 feet below grade for laboratory analysis. Field evidence indicated that these samples were collected from the capillary fringe zone, immediately above the water table. In addition, a water sample was collected through the augers from boring S133 after advancing the boring an additional three feet to determine the approximate extent of hydrocarbon impacts to groundwater in the assumed downgradient direction from the former tanks. Only slight hydrocarbon odors were noted in soil samples collected from the capillary fringe zone of borings S132 and S133. No odors were noted in the groundwater sample collected from h:\"5 1\groundze\ranuio\ranuio. sum 2