Laserfiche WebLink
f <br /> The Customer Company <br /> Page 2 <br /> understood that no further work with respect to subsurface hydrocarbons has been <br /> conducted since the May 5, 1988 groundwater sampling by Kleinfelder. <br /> A geologist from Dames & Moore visited the site on October 24, 1990 to collect <br /> groundwater samples from the three monitoring wells for laboratory analysis. Our <br /> methods for the field work conducted are described in the attached "Field Procedures". <br /> The depth to groundwater was measured and water from each well was analyzed <br /> subjectively. No subjective evidence of hydrocarbon product was observed. <br /> Approximately six gallons of groundwater was purged from each well before samples were <br /> collected. Purge water from the wells was stored temporarily on-site in a properly <br /> labeled 55-gallon, 17-H steel drum approved for that use by the Department of <br /> Transportation Disposal of the water is the responsibility of The Customer Company. <br /> Thesam roundwater les were submitted to BC Laboratories Inc. in Bakersfield, <br /> g P <br /> California. Samples were analyzed for total petroleum hydrocarbons as gasoline (TPH) <br /> and for benzene, toluene, ethylbenzene and total xylene isomers (BTE&X). Hydrocarbon <br /> constituents were not detected by the laboratory analyses. Copies of the laboratory <br /> analysis reports and the Chain of Custody Record are attached. <br /> The groundwater gradient across the site on the date of the sampling event has <br /> been evaluated. Casing elevations with respect to mean sea level were provided by The <br /> Customer Company. These elevations were compared with depth to water measurements to <br /> calculate the elevations of the groundwater surface The data summarized in Table I <br /> was used to evaluate the groundwater gradient, as illustrated on the Potentiometric <br /> 17161-046-o44 <br />