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I ' I r 1 I I 26 April 2004 AGE-NC Project No 97-0333 ' Page 7 of 12 r ' petroleum product,balling activities continued(approximately 4 gallons from MW-2 and 6 gallons from MW-6) until'product could not be observed The floating petroleum product captured from bailing activities was placed Inside a Department of ' } , Transportation(D O T)-approved steel drum and stored at the southeast section at the site in an area lacking public access 43 GROUND WATER SAMPLING i Ground water samples were collected from the purged wells MW-1 through MW-5 utilizing new, r 2-Inch diameter disposable polyethylene bailers, ground water samples were collected from the purged wells MW-6 through MW-13 utilizing 3/8-inch diameter polyethylene tubing Ground water ' 'samples were transferred Into 40-m1 EPA-approved VOA vials containing 0 5 ml 18%hydrochloric acid as a sample preservative Care was taken to ensure that visible air bubbles were not present in the vials after filling and capping Ground water sample containers were labeled with the well designation, date, time, and sampler's Initials ' 4 4 LABORATORY ANALYSIS OF GROUND WATER SAMPLES Each ground water sample was logged on a chain-of-custody form,placed in a chilled container and „ transported to Cal Tech Environmental Laboratories, a DHS-certified laboratory for analysis for TPH-g by EPA Methods 5030/8015M, I r ' • BTEX by EPA Method 8260B, and I � • Volatile organic compounds, Including PCE;,TCE, 1,2-DCA, EDB, MTBE, TAME,DIPE, 'I ETBE and TBA by EPA Method 8260B ` 1 ° I � 45 FINDINGS r i I II I i Ground water elevation, flow direction and gradient were determined from field data collected on I 17 November 2003, the contaminant Impact to ground water was quantified by laboratory analysis ; i of water samples collected on 18 and 19 November 2003 , I I 1i V n i i9 I I Advanced GeoEnvaronmental,Inc ar: ' I Irl I I '