Laserfiche WebLink
29 April 2002 <br /> AGE-NC Project No 95-0173 <br /> Page 5 of 5 <br />' 3 4 GROUND WATER AQUIFER PUMPING TEST <br /> A 24-hour ground water aquifer pumping test will be conducted at the site to induce a decline In <br /> static water level In the newly installed ground water extraction well (screened 25 to 45 feet bsg) <br /> Pressure transducers will be deployed, at a minimum, In wells EW-1,MW-1, MW-2, MW-3,MW-4 <br /> and MW-6 to measure the difference in ground water levels before well pumping versus time during <br />' ground water extraction A constant ground water pumping rate(approximately 5 gallons per minute) <br /> will be utilized from the ground water extraction well during the aquifer pump test to achieve <br /> optimum draw-down influence <br />' Grab water samples will be collected at 6-hour Intervals an submitted to a DHS-certified laboratory <br /> for the following constituents <br />' 0 TPH-g in accordance with EPA Method 8015 Modified/5030, <br />' 0 BTEX, MTBE, TAME, D1PE, ETBE, TBA, 1,2-DCA and EDB by EPA method 8260 <br /> Modified <br /> • Total lead by EPA Method 7420 <br /> 1 <br /> Laboratory reports for ground water analysis, testing methods, laboratory quality assurance/quality <br />' control (QA/QC) reports, and sample chain of custody documentation will be presented In a report <br /> with findings and recommendations <br />' Purged ground water will be containerized In an on-site 10,000-gallon Baker tank, following the 24- <br /> hour pump test, a composite "grab" ground water sample will be collected from the Baker tank to <br /> analyze for TPH-g,BTEX,MTBE,TBA, TAME,DIPE,ETBE,EDB and 1,2-DCA by EPA Methods <br />' 8015M and 8260M The purged ground water will be transported under non-hazardous waste <br /> manifest off-site to an appropriate disposal facility <br /> 1 <br />' Advanced GeoEnvironmental,Inc <br /> 1 <br />