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property. <br /> -� <br /> C%' Task 2 <br /> JPCA will supervise the advancing of three borings to an <br /> approximate depth of 50 ft. or the groundwater whichever is <br /> encountered first. If groundwater is encountered at or above 50 <br /> feet, two inch diameter monitoring wells will be constructed so <br /> as to extend five feet into the saturated zone. JPCA will use a <br /> C-57 licensed driller and 8-inch diameter hollow-stem augers. <br /> Soil samples will be collected at each 5 ft level interval or at <br /> significant changes in lithology commencing at a depth of ten <br /> feet, using a split spoon tube sampler loaded with pre-cleaned <br /> brass tubes. Soil samples collected in the lowest brass liner <br /> will be preserved by covering both ends with Teflon tape, capping <br /> with 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. A maximum of 27 soil samples is anticipated to be <br /> collected, 9 from each boring. The boring locations are shown on <br /> Figure 2 . <br /> If groundwater has not been encountered by 50 feet below grade <br /> and the soil samples collected at 50 feet contain actionable <br /> levels of contaminants then further soil sampling may be <br /> required. <br /> One groundwater sample will be collected from each monitoring <br /> well, if such are constructed, after the wells are purged and <br /> allowed to recharge. A clean dedicated bailer will be used to <br /> obtain the samples, then the samples will be placed in four 40 ml <br /> VOAs with Teflon septa, labeled, held in a cooled (4 Degrees C) <br /> ice chest and transported to a State Certified Laboratory, under <br /> COC documentation, for analyses. A maximum of 3 groundwater <br /> samples is anticipated to be collected. <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. Soil cuttings will be <br /> stored on and covered with visqueen. i <br /> Task 3 ! <br /> i <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 /> If monitoring wells are constructed. JPCA will measure the <br /> groundwater depth in the three monitoring wells with an <br /> 2 <br /> i <br />