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� L <br /> 29 March 1996 <br /> AGE-NC Project No 95-0125 <br /> Page 3 of 5 <br /> report, dated 26 February 1996 <br /> 26 SOIL STOCKPILE AND PURGE WATER SAMPLING <br /> Stockpiled soil was sampled by representatives of AGE on 5 January 1996 Four samples were <br /> collected from the stockpiled soil and from containerized purged water stored on-site TPH-g was <br /> detected m stockpiled soil samples at concentrations up to 480 ppm (SP3) BTE&X were detected <br /> in stockpiled soil samples at concentrations up to 13 ppm (xylene, SP2) No hydrocarbons were <br /> detected in samples collected from the containerized purged water Results of the sampling was <br /> detailed in the above-mentioned AGE report, dated 26 February 1996 <br /> 3.0. PROCEDURES <br /> 3 1 MONITORING WELL PURGE PROCEDURES <br /> On 05 March 1996, the depth to ground water in each well at the site was measured relative to the <br /> casing top using a Solinst water level meter The relative ground water elevation in each well and <br /> prevailing hydraulic gradient were determined from these data Ground water depth data is presented <br /> in Table 1 <br /> After depth to water measurements were performed, a pre-cleaned bailer or submersible pump was <br /> used to remove approximately 1 5 to 5 gallons of standing water from wells MW-2 and MW-6 to <br /> stabilize temperature, pH and conductivity Stabilization of these parameters demonstrates proper <br /> purging of the well Stabilization parameters were measured at one-gallon intervals using an ICM <br /> Water Analyzer Purged water was stored on-site in DOT drums Ground water stabilization and field <br /> data sheets are included in Appendix A <br /> 3 2GROUND WATER SAMPLE COLLECTION <br /> Os <br /> March 1996, ground water samples were collected from morvtoring wells MW-2 and MW-6 <br /> Samples were retrieved from each of the wells using new disposable plastic bailers Each sample was <br /> collected in 40-m1 EPA vials and transported in a chilled container under ice, under a chain-of- <br /> custody to Alpha Analytical Laboratories, Inc (AAL) in Ukaih, California <br /> Each sample was analyzed for total petroleum hydrocarbons quantified as gasoline (TPH-g) and <br /> volatile aromatics (benzene, toluene, ethylbenzene and xylenes BTE&X) in accordance with EPA <br /> methods 5030/8015m and 602, respectively A sample collected from MW-6 was analyzed for methyl <br /> tert-butyl ether(MTBE) in accordance with EPA methods 602 <br /> I <br />