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' 3.3 Monitoring Well Purge Procedures <br /> In accordance with quarterly monitoring procedures, all wells were purged following the <br /> measurement of groundwater depths on January 31 and April 13, 1994. PVC bailers and <br /> submersible purge pumps were used to remove between 3 and 5 well volumes of water from <br /> each well. The wells were purged to stabilize pH, temperature and conductivity. Parameters <br /> were measured using an TCM water analyzer. Purge water was stored in 55-gallon DOT <br /> drums and stored on-site. Monitoring well data sheets are included in Appendix B. <br /> 3.4 Groundwater Sample Collection and Analysis <br /> tAfter purging, groundwater samples were collected using disposable plastic bailers. Three <br /> 40-m1 EPA vials and one 1-liter amber bottle were used to collect water samples from each <br /> well. The samples were transmitted in a chilled container to McCampbell Analytical in <br /> Pacheco, California. <br />' The samples were analyzed for total petroleum hydrocarbons (TPH as gas and diesel), and <br /> BTE&X in accordance with EPA methods 8015m and 602, respectively. <br /> 3.5 Drum Sampling <br /> On March 30, 1994 eight drums containing purge water were sampled under the direction <br /> of the PHS/EHD.The samples were collected using clean, plastic disposable bailers. Samples <br /> from the drums were composited (D-1, D-2 and D-13; D-8 through D-12) and analyzed for <br /> TPH as gasoline and BTE&X in accordance with EPA methods 8015m and 602, <br /> respectively. <br /> Drums containing soil cuttings were emptied and stockpiled on plastic sheeting. Three <br />' samples were collected from the stockpiled soil (Y-1, Y-2, Y-3) and composited for analysis <br /> on April 1, 1994. The sample was analyzed for TPH gasoline and diesel and BTE&X. <br /> 4.0 FINDINGS <br />' 4.1 Soil Sample Analysis <br />' Twelve soil samples were transported under chain-of-custody to McCampbell Analytical,Inc. <br /> (MAI) and analyzed for TPH (as gasoline and diesel) and BTE&X in accordance with EPA <br /> methods 8015 and020, respectively. No petroleum hydrocarbons were detected in any of <br /> the analyzed soil samples from MW-6, MW-7 or MW-8. The Iaboratory report of the soil <br /> sample analysis is included in Appendix C. <br /> Ile <br /> .y <br /> 673-SIQR49/Yclb.5.6.x.n.e <br />