Laserfiche WebLink
1 <br /> w <br /> u1i.CEFS OESC#ASCG+SULfiH15 <br /> (TPH-G), and by EPA Method 7420 for total lead The analyses were performed by American <br />' Environmental Network of Pleasant Hill, California <br /> The grab groundwater sample was analyzed by EPA Method 8015M for TPH-G and by EPA <br />' Method 8020 for BTEX <br /> 2.1.5 Decontamination Procedures <br />' All sampling equipment, including stainless steel sleeves, split spoons, and bailers, were <br /> decontaminated prior to use with a trisodium phosphate solution followed by a potable water <br />' rinse The drill ng and hollow stem augers were steam cleaned prior to drilling <br />' 2.1.6 Waste Handling <br /> Soil waste and decontamination fluids generated during the investigation were stored in 55-gallon <br /> drums at the San Joaquin County motor pool at 100 N Hunter Street Arrangements are <br /> currently being made for disposal of the waste <br /> 2.1.7 Quality Assurance Samples <br /> An equipment blank and ambient blank sample were collected during the completion BH-13 <br />' The equipment blank was analyzed for TPH-G, BTEX, and total lead The ambient blank was <br /> analyzed for TPH-G and BTEX <br /> 1 <br /> The ambient blank was collected by pouring laboratory grade deionized water into a sample <br /> bottle during the sampling event The equipment blank was collected by pouring laboratory <br /> grade deionized water across a decontaminated split spoon soil sampler into a sample bottle <br /> 2.2 RESULTS <br /> 1 <br /> 2.2.1 Hydrogeological Data <br /> Boring logs are contained in Appendix A At MW-9 and BH-13 saturated soil was first <br />' encountered at 45 ft bgs, however, static water levels were about 37 5 ft bgs at both locations <br />' L\E=non.ti3JC\SJCH5A IST 6 October 19% <br />