Laserfiche WebLink
19 May 1997 <br /> AGE-NC Project No. 96-0266 <br /> Page 7 of 8 <br /> 12. Log auger returns. and soil sample duplicates in accordance with the Unified .Soil <br /> Classification System. <br /> 13. Place auger returns and rinseate in 55-gallon DOT drums and store on-site. Disposal <br /> alternatives will be evaluated based on results of laboratory analyses. <br /> 14. Complete each boring as_a ground water monitoring well using 15 feet of 0.020-inch slotted <br /> PVC screen. The proposed monitoring well completion is illustrated in Figure 4. <br /> 6.2. GROUND WATER SAMPLING <br /> 1. Survey- the top of the well casing to the nearest- 1/1 00th of. a foot relative to existing <br /> monitoring wells. <br /> 2. No sooner than 72 hours after installation, measure to the nearest 0.01 foot, the static water <br /> level in each monitoring well, - <br /> 3. Using a submersible pump or dedicated bailer, surge and purge each monitoring well. At <br /> least three well volumes of water will-be removed_from each well to stabilize temperature, <br /> pH, and conductivity; stabilization parameters.will be measured at one-gallon intervals. <br /> Ground water samples will be collected.using disposable bailers; samples will be collected <br /> in 40-m1 VOA vials. - <br /> 4. Label and log water samples on a chain-of-custody form. <br /> 5. Store the samples in a chilled containerrand transport under chain-of-custody procedure to <br /> a state-certified laboratory for analysis. Ground water samples will be analyzed for total <br /> petroleum Hydrocarbons quantified as gasoline (TPH-g), total petroleum hydrocarbons <br /> quantified as diesel (TPH-d), volatile aromatics (benzene, toluene, ethyl benzene and total <br /> xylenes: BTE&X) and methyl tertiary butyl ether (MTBE) in accordance with the <br /> appropriate EPA methods. If field observations indicate that other petroleum hydrocarbons <br /> are present, additional analysis may be necessary: <br /> b. Selected ground water samples will be analyzed for the following metals; cadmium, <br /> chromium,nickel, lead and zinc in accordance with EPA method 6010. <br /> 7. Store purged water in 55-gallon DOT drums on-site pending.analytical results. <br />