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Table 3 <br /> Volatile Organics in Water Samples <br /> (all concentrations in ug/1) <br /> BTEX TPH- TPH- TPH- <br /> Boring Constituents Motor Oil Diesel Gasoline Naphthalene <br /> Bl <0S <50 <50 NP NP <br /> B2 <0.5 <50 <50 NP NP <br /> B3 <0S <50 <50 NP NP <br /> --IrrB4 <OS 93 56 70 <br /> NP Chemical Pattern Not Present in Chromatogram <br /> • Qualitative Identification <br /> In boring B4, TPH as motor oil was present at designated concentrations in both the 3-foot <br /> and 5-foot soil samples and total xylenes were present just above the detection limit in the <br /> 5-foot sample (Table 1). The concentration of total lead in the 5-foot sample from boring <br /> B4 equaled the TTLC (1000 mg/kg)(Table 2) and total metal concentrations generally <br /> increased with depth to 5 feet. Petroleum hydrocarbons (as motor oil, diesel, and gasoline) <br /> and naphthalene were present in the ground-water sample from boring B4 (Table 3), but <br /> BTEX constituents were not detected. <br /> The soil sample that generally had the highest total metal concentrations (from boring B4 at <br /> the 5-foot depth) was later analyzed for pH and soluble metal concentrations (citric acid <br /> WET for each metal, plus deionized water analysis for lead). These tests were to provide <br /> an indication of the soluble portions of the total metal concentrations. The soil sample pH <br /> prior to extraction was 7.8 and the test results were as follows: 77.0 mg/1 (citric acid) and <br /> 0.016 mg/1 (deionized water) lead, 1.2 mg/1 copper, 34.0 mg/I zinc, and less than the <br /> detection limit (0.005 mg/1) mercury. <br /> N <br />