Laserfiche WebLink
�NCES~� <br /> 1 LA <br /> • Gauged Site monitor wells to evaluate the presence or absence of free product and <br /> measure groundwater elevations Groundwater monitoring wells MW-1, MW-2, MW-3, <br /> 1 MW-3A, MW-3D, MW-4 through MW-13, MW-13A and MW-13B were gauged <br /> • Purged each Site monitor well by removing a minimum of three well volumes using a <br /> 1 purge pump <br /> 0 Sampled and analyzed groundwater for total petroleum hydrocarbons, gasoline range <br /> 1 (TPHg), benzene, toluene, ethylbenzene, and xylenes (BTEX) and oxygenated gasoline <br /> additives including t-Butanol (TBA), Methyl-t-Butyl Ether (MTBE), Di-isopropyl Ether <br /> (DIPE), Ethyl-t-Butyl Ether (ETBE), t-Amyl Methyl Ether (TAME), 1,2-dichloroethane <br /> 1 (1,2-DCA) and ethylene dibromide (EDB) <br /> • Prepared this Quarterly Monitoring Report summarizing the findings of the assessment <br /> 1 This report presents field observations, results, conclusions and recommendations for additional <br /> work AES has prepared this report in accordance with generally accepted environmental <br /> 1 practice <br /> SITE INVESTIGATION & RESULTS <br /> The field notes, procedures, and laboratory reports submitted by AGE for this quarterly <br />' monitoring event are attached as Appendix A <br /> MONITOR WELL SAMPLING <br /> Upon arrival at the Site, the well caps were opened to allow the wells to achieve static conditions <br /> The wells were then gauged to measure groundwater elevations (Table 1) and purged with a <br /> submersible Grundfos& pump until three casing volumes of groundwater had been recovered <br /> Field measurements for conductivity, pH and temperature were taken during purging to ensure <br /> the collection of formation groundwater Groundwater samples were collected by AGE from the <br /> seventeen monitor wells on December 12, 2000 <br /> During purging of the monitor wells, neither non-aqueous phase liquid (NAPL) nor hydrocarbon <br />' sheen were noted on the purged groundwater Gasoline odors were detected in monitor wells <br /> 1\4W-3, MW-3D, MW-13A and 1\4W-13B (Figure 2) <br />' After purging, samples were collected using pre-cleaned disposable bailers and then transferred to <br /> laboratory provided containers for analysis of TPH(g), BTEX, and oxygenated additives including <br /> TBA, MTBE, DIPE, ETBE, TAME, 1,2-DCA and EDB The samples were transported under <br /> 1 <br />' Canteen Facility January 15, 2001 <br /> Quarterly Groundwater Monitonng Report Page 2 <br />