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Ob December 2000 <br /> . AGE-NC Project No 95-0173 <br /> Page 7 of 7 <br /> ground water in the areas of wells MW-3 and MW-4 (screened 30 to 50 feet bsg) <br /> • Laboratory results of groundwater samples collected from MW-13 (screened 95 to 100 feet <br /> bsg) suggest that the dissolved petroleum hydrocarbon plume extends at least 100 feet bsg <br /> I <br /> Based on SVE remediation data collected between 01 July 2000 and 04 October 2000, AGE <br /> concludes <br /> • The volume of hydrocarbons extracted from the inlet of the SVE system was calculated to <br />' be approximately 209 gallons of petroleum hydrocarbons (Appendix E) during the <br /> monitoring period <br />' • Since initiation of the SVE system, the total mass of petroleum hydrocarbons extracted is <br /> estimated to be approximately 410 gallons <br /> • No general concentration trends were evident in the PID field measurements or results of <br />' laboratory analysis of soil-gas vapor samples over the monitoring period <br /> 5.0. RECOMMENDATIONS <br /> Based upon third quarter 2000 data collected from the site, AGE recommends <br /> • Continued quarterly groundwater monitoring and sampling of wells MWA through MW-13, <br /> ground water sampling results will be used to monitor progress of the SVE and IAS _ <br /> remediation system <br />' • Continued operation of the on-sate SVE and IAS remediation system, remediation progress <br /> will be reevaluated on a quarterly basis <br />' <br /> 6. . LIMITATIONS <br /> TIONS <br /> r_% r_-- i ��] +1, + A F o"A Tail ^rdinarily exercise' bit <br /> Vur prolG,Jloaal servicea Wl.rc per'LVm,.cu using uluL uegree vi i.are w ••> J <br /> environmental consultants practicing in this or similar localities The findings were based mainly <br />' upon analytical results provided by an independent laboratory Evaluation of the geologic/hydro- <br /> geologic conditions at the site for the purpose of this investigation is made from a limited number <br /> of available data points(e g ground water and soil-gas samples), and subsurface conditions may vary <br /> away from these data points No other warranty, expressed or implied, is made as to the professional <br /> • recommendations contained in this report <br />' Advanced GeoEnvnronmental,Inc <br /> 1 <br />