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Task 3 <br /> Determine the vertical and lateral extent of the contaminants <br /> found on the site and those remaining in the soil and ground <br /> water. This will require six borings be advanced to an <br /> approximate depth of ten feet or into the saturated zone <br /> whichever occurs first which will be spaced radially around the <br /> former UST area. <br /> A site health and safety plan will be prepared and U S Alert <br /> contacted to check on placement of underground utilities. JPCA <br /> requests that the present owner/tenant identify any on-site <br /> utilities that they are aware of on the property. JPCA will <br /> obtain a permit from San Joaquin County Environmental Health <br /> Division (SJCEHD) to drill the six borings, using Hydropunch <br /> technology and a California licensed drilling contractor. <br /> JPCA will notify the San Joaquin County Environmental Health <br /> Division (SJCEHD) 48 hours prior to initiation of field work. <br /> Soil samples will be collected at each 5 ft level interval or at <br /> significant changes in lithology commencing at a depth of five <br /> feet, using a split spoon tube sampler loaded with pre-cleaned <br /> brass tubes. A maximum of 12 soil samples are anticipated to be <br /> collected. Groundwater samples will be collected from each <br /> boring. <br /> Sampling equipment will be decontaminated using tri-sodium <br /> phosphate solution (TSP) and twice rinsed with the last rinse <br /> using distilled water prior to sampling. <br /> Soil samples collected in the lowest brass liner will be <br /> preserved by covering both ends with Teflon tape, capping with <br /> plastic caps and sealing the caps with plastic tape. Soil <br /> samples will be labeled and logged under Chain-of- Custody (COC) <br /> control. Soil samples will be stored in a cooler with ice, <br /> transported to a state certified laboratory for analysis with COC <br /> documentation. The six groundwater samples, one from each <br /> boring, will be collected by a clean dedicated bailer, placed in <br /> several 40 ml WAS with Teflon septa, labeled, held in a cooled <br /> (4 Degrees C) ice chest and transported to a State Certified <br /> Laboratory, under COC documentation, for analyses. <br /> The borings will be logged by inspection of the samples and <br /> classified using the Unified Soil Classification System by a <br /> California Certified Engineering Geologist. <br /> Task 4 <br /> The three wells, already constructed on site, will be purging and <br /> collecting the purged groundwater in 55-gallon drums labeled <br /> awaiting analysis. Three groundwater samples, one from each <br /> 2 <br />