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wr.«� a The boring for each monitoring well was advanced with 8-inch outside diameter hollow stem augers. When the augers were advanced to the desired depth of the well, he well and set to sthe ing was lowered down the center of the augers appropriate depth. The annular space between the augers and the screened portion of the well was backfilled with Lonestar #2-12 sand. As the filter pack was placed,. the augers were withdrawn from the borehole so the sand flowed from the augers into the annular space of the borehole. The filter pack was extended to approximately two feet above the top of the screened portion of the casing. A two foot seal of bentonite clay was placed in the annular space above the filter pack. Since the bentonite seal was positioned above the water table, five gallons of potable water was added to allow the bentonite to swell. The remaining annular space was backfilled to the surface with sand/cement slurry. Each monitor well was finished with a universal water-tight monitoring ;aell manhole set intim concr--te. A watertight, lookinBoring the ell casing inside manhole. logs/well detail arecontained inAppendix11 3.4 Groundwater Sampling On November 5th, 1990, the monitoring wells were monitored in accordance 'aith WaterWork's Groundwater Monitoring Protocol (Appendix III). The wells were then purged in accordance with WaterlVork's well Development Protocol (Appendix III). The purge logs are included in Appendix IV Water samples were then collected from the wells in accordance with WaterWorr.'s Groundwater Sampling Protocol (Appendix III). Applied Analytical analyzed the samples for BTEk and TPHG utilizing EPA 8020 and 8015 methodologies, r respectively. The analytical results are summarized in Table 3. Laboratory data sheets and chain-of-custody documentation are included in Appendix V. 3.5 Groundwater flow Basad on November 6, 1990 monitoring data (Table 4) , groundwater occurs approximately 12.5 to 13.0 feet below grade at the project site. Groundwater flow is to the southwest with a gradient of 0.00077 or 4.07 feet per mile (Figure 5) . 4.0 CONCLUSIONS/RECOMMENDATIONS 4,1 soil Contamination Fiel boring Y ,J (TableID 2) readings in the relatively samplesf Soil high collected of mhydrocaroon Of formerconstituents tanks. Field PID measurements in in the soil near e ofsoilsamples 4 was