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20 April 1995 <br /> AGE-NC-95-0109 <br /> Page 4ofS <br /> sampled on 23 January and 21 February 1995 On 13 and 14 March 1995, quarterly <br /> monitoring procedures were performed at the site, which also included MW-14 and EW-1 <br /> As during past monitoring events, wells MW-1 through MW-5 did not contain enough water <br /> to purge or sample Due to heavy rain and an excessive surface runoff situation, MW-12 <br /> could not be sampled during this monitoring event <br /> 3 4 1 MONITORING WELL PURGE PROCEDURES <br /> On 13 March 1995, a Sohnst water level meter was used to measure the depth to ground <br /> water in each monrtoirng well, prior to purging An attempt was then made to purge each <br /> well containing water of a minimum of three well volumes Except for nionitorrng well MW- <br /> 6, which %vas bailed dry after removing approximately 3 gallons of water, the attempt was <br /> successful <br /> Each %Nell except EW-1 was purged using clean PVC bailees Well EW-1 was purged on 14 <br /> Mai ch 1995 using a 2-inch subiniersible pump Temperature, pH and conductivity of the <br /> purge water weie measured at approximately 1-gallon intervals (10-gallon intervals for EW- <br /> 1) using a ICM water analyzer Monitoring well stabilization data and field slieets are <br /> included in Appendix B The water was placed in labelled DOT-approN ed drun-is and stored <br /> ori-site <br /> 3 4 2 COLLECTION OF GROUND WATER SAMPLE <br /> Water samples were collected fiom each well using clean, disposable plastic bailees <br /> Immediately upon retrieval, the samples were tiansfened into 40-nil EPA vials preserved <br /> with hydiochloirc acrd and were subsequently tianspoited in a chilled container to <br /> MCCainbell Analytical in Pacheco (MAI) The samples were analyzed for TPH-g and <br /> BTE&X in accordance with EPA methods 80151n, and 602, respectively Samples from MW- <br /> 7, MW-8, MW-9, MW-13 and MW-14 were also analyzed for volatile halocaibons in <br /> accordance with EPA method 601 The sample from MW-14 was also analyzed for ethylene <br /> dibiomide (EDB) in accordance with EPA method 601 <br /> 4 0. FINDINGS <br /> 41 MICROBIOLOGICAL ACTIVITY IN SOIL AND GROUNDWATER <br /> As of the date of this iepoit, the results fol miciobiological evaluation were not available <br /> Upon ieceippt of the necessary data, an addendum will be prepared and submitted <br />