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The monitoring well was finished with a Universal water-tight monitoring well manhole <br /> set into cement. A watertight locking cap was sealed with the well casing inside the <br /> manhole Boring logs/well details are contained in Appendix I. <br /> 1 � <br /> 3.1.3 Groundwater Sampling <br /> On September 14, 1990, the monitoring well was monitored, developed, and sampled <br /> in accordance with RESNA's respective protocols (Appendix II). Sequoia Analytical <br /> analyzed the samples for BTEX and TPHG utilizing EPA methods 8020 and 8015, <br /> respectively. The laboratory detected toluene (0.85 ppb), Ethylbenzene (0.63 ppb), <br /> xylenes (1.8 ppb) and TPHG (66 ppb) Benzene was not detected at or above method <br /> detection limits. Groundwater analytical results are summarized in Table 2. <br /> 3.2 Phase 2 Activities <br /> On May 1 and 4, 1992, RESNA personnel installed two additional monitoring wells (MW2 and <br /> MW3) to depths of approximately 65 feet below grade at the project site to further define the <br /> lateral and vertical extent of petroleum hydrocarbons in soil and groundwater, if any. The <br /> boring/well locations are plotted on Figure 3 <br /> ' 3.2.1 Soil Sampling <br /> Phase 2 drilling was conducted by RESNA Drilling (C57 622930) utilizing a hollow stem <br /> ' auger drill ng. A field geologist continuously logged all drill cuttings and cored soil <br /> samples utilizing the Unified Soil Classification System. Descriptions of soil types <br /> encountered and sample collection intervals are included on the boring/well logs <br /> (Appendix I) Cored soil samples were collected at five foot intervals using a 2-inch <br /> ' diameter spit-spoon sampler containing three brass tubes The cored samples and dnll <br /> cuttings were characterized for soil type, moisture content, and evidence of petroleum <br /> ' contamination. Moreover, a PID was used as a screening device for the detection of <br /> petroleum vapors in dnll cuttings and cored samples Soil samples collected from the <br /> water table interface from each well and were submitted for laboratory analysis for <br /> I <br /> R-060392 TJL 5 <br />