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' 30 Apnl 2004 <br /> AGE-NC Project No 04-1129 <br />' Page 2 of 5 <br /> r w <br /> with Teflon sheets, capped and sealed with tape The samples were labeled, stored on ice and <br />' transported under chain-of-custody to Cal Tech Environmental Laboratories (CTEL), a State of <br /> California Department of Health Services (DHS)-certified. analytical laboratory <br /> 1 r <br /> 3 2 LOGGING <br /> 1 Soil was extruded from a second brass sleeve and was screened for the presence of organic vapor <br /> using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo <br />' Environmental 580B, 10 0 eV, calibrated to isobutylene), and the OVM readings were recorded on <br /> a boring log The soil was then visually described on the boring log in accordance with the Unified <br /> Soil Classification System(see Appendix B) <br /> 33 LABORATORY ANALYSES OF SOIL SAMPLES <br />' Selected soil anal were samples zed for <br /> p Y <br />'. Total petroleum hydrocarbons quantified as diesel(TPH-d) in accordance with EPA Method <br /> 8015 Modified, and <br />' Benzene, toluene, ethylbenzene and total xylenes(BTEX)in accordance with EPA Method <br /> 8021B <br /> I , <br /> 3 4 QUARTERLY WELL MONITORING PROCEDURES <br /> Quarterly ground water monitoring was performed on monitoring wells MW-1 through MW-3 on <br /> 12 May 2003 <br /> 1 <br /> 3 4 1 Well Evacuation and Monitoring <br /> A Solmst water level meter was used to measure the depth to ground water in monitoring wells <br /> MW-I through MW-3 relative to the tops of the well casings (well heads) After water levels were <br /> gauged, a Watera internal pump was used to evacuate (purge) each well of a minimum of three <br /> casing-water volumes (approximately 5 25 to 5 75 gallons) of water Temperature, pH, and <br /> conductivity were measured at regular intervals using an Oakton water analyzer The field data sheets <br />' are included in Appendix C Purged water was stored on site in 55-gallon drums <br /> IAdvanced GeoEnvironmental,Inc <br /> 1 <br />