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15 September 1999 <br /> AGE-NC Project No 98-0592 <br /> Page 3 of 7 <br /> Grab ground water samples were collected from borings BI B2, and B5 Samples were collected <br /> utilizing a disposable polyethylene bailer Upon retrieval, each sample was transferred into EPA- <br /> approved 40-m1 VOA vials, containing 0 5 ml 18% hydrochloric acid as a sample preservative, and <br /> into EPA-approved I-liter glass ambers Care was taken to ensure that visible air burbles were not <br /> present in the VOAs after filling and capping Ground water sample containers were labeled with <br /> the boring designation, date, time, and sampler's initials <br /> Water samples were logged on a chain-of-custody, transported to a DHS-certified laboratory and <br /> analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 5030/8015M, <br /> • Volatile aromatics (benzene, toluene, ethylbenzene and xylene BTEX) with methyl tertiary- <br /> butyl ether (MTBE) in accordance with EPA method 8020 <br /> • Fuel oxygenates, including tertiary butanol (TBA),di-Isopropyl ether(DIPS),ethyl tert-butyl <br /> ether (ETBE) and tert-amyl methyl ether (TAME) and MTBE in accordance with EPA <br /> Method 8260M <br /> 3 3 LOGGING <br /> During drilling activities, sample duplicates were monitored for the presence of organic vapor (OV) <br /> using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene) and were described on boring logs in <br /> accordance with the Unified Soil Classification System (USCS) Boring logs are included in <br /> Appendix A <br /> 3 4 MONITORING WELL INSTALLATION <br /> Soil boring B1was completed as a ground water monitoring well MW-1 utilizing 2-inch diameter, <br /> schedule 40, blank polyvinyl chloride (PVC) casing and 2-inch diameter screened PVC casing <br /> (0 020-inch slot) <br /> Each well was completed by placing the PVC well casing assembly through the hollow stem of the <br /> augers to the total depth of the boring The augers were incrementally raised as #2/12 Lonestar sand <br /> (filter pack) was slowly poured down the annulus between the well casing and the inner wall of the <br /> hollow stem auger The filter pack was placed adjacent to the screened casing from the bottom of <br /> the boring to a point approximately two feet above the top of the screen Following placement of the <br /> Advanced GcoFn%ironmenud,Inc <br />