Laserfiche WebLink
' 28 September 2000 <br /> AGE-NC Project No 95-0128 <br />' Page 2 of 5 <br />' to ground water was measured to ensure that a minimum of 80% well-volume recharge had been <br /> achieved prior to sampling <br />' 22 GROUND WATER SAMPLE COLLECTION <br /> A water sample was collected from each well using a new, clean, disposable plastic bailer <br /> Immediately upon retrieval, samples were transferred into three 40-m1 EPA-approved VOA vials <br /> containing 0 5 ml 18% hydrochloric acid as a sample preservative and into one 1-liter amber bottle <br />' without the preservative The samples were logged on a chain-of-custody form, stored in a chilled <br /> container and transported under chain-of-custody to McCampbell Analytical Inc (MAI),a California <br /> Department of Health Services(DHS)-certified laboratory The ground water samples were analyzed <br />' for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br />' accordance with EPA Method 8015 Modified, <br /> • Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br />' in accordance with EPA Method 8020, and <br /> • Oxygenated compounds di-isopropyl ether(DIPS), ethyl tertiary-butyl ether(ETBE), methyl <br /> tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), <br /> methanol, ethanol, ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) in <br /> accordance with EPA Method 8260 <br /> I <br /> 3.0. FINDINGS <br /> Ground water elevations were determined by subtracting the measured depths-to-water from the <br /> surveyed casing elevations Ground water flow directions were determined by contouring the water <br /> elevations on a scaled site plan (Figures 3 and 4) <br /> 3 1 GROVI\D ..TATER ELEVATIOI`T L^1i`VD Glnrit�iIENT <br /> The average ground water elevation on 18 August 2000 was approximately 2 34 feet lower than the <br /> average ground water elevation during the April/June 2000 monitoring event <br /> The ground water table occurred within the screened intervals of the wells monitored, with the <br /> . exception of the deeply screened monitoring wells <br /> IAdvaacer!GcoEnvironmental Inc <br />