Laserfiche WebLink
1 <br /> y <br /> 24 April 2003 <br /> AGE-NC Project No 95-0144 <br /> ' Page 4 of 4 <br /> ' Ground water elevations in deep-screened wells, completed in the Lower Water Zone,were ' <br /> between 165 to 195 feet lower than in shallow-screened wells,completed within the Upper <br /> Water Zone <br /> • Ground water was inferred to flow towards the north-northeast m the Upper Water Zone,but <br /> was inferred to flow towards the west-northwest in the Lower Water Zone <br /> ' • TPH-d was detected in the ground water sample collected from monitoring well MW-2 <br /> Detectible concentrations of petroleum hydrocarbons had not been detected in samples <br /> ' collected from MW-2 since November 2000 The detected concentrations of petroleum <br /> hydrocarbons in MW-2 appear to be related to the recent decrease in ground water elevation <br /> at the site The ground water table was approximately 1 1 feet above the screened interval <br /> ' of MW-2 <br /> • Target analytes were not detected above laboratory reporting limits in the samples collected <br /> from wells MW4 and MW-5 <br /> ' • The east,west and vertical extent of impacted groundwater near the former UST No 8 is not <br /> well defined <br /> ' 5.0. RECOMMENDATIONS <br /> Based upon data obtained during the first quarter of 2003 and previous sampling events, AGE <br /> ' recommends <br /> • Continued quarterly monitoring of the site The next quarterly monitoring event should be <br /> scheduled for May 2003, concurrent with monitoring at the former Chase Chevrolet Van <br /> ' Buren site <br /> • Preparation of a Final Remediation Plan to address hydrocarbon-impacted groundwater near <br /> ' the former UST No 8 <br /> ' 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> ' environmental consultants practicing in this or similar localities The findings were based mainly <br /> upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> conditions at the site have been made from a limited number of available data points (i a ground <br /> ' water monitoring wells, ground water samples) and subsurface conditions may vary through time <br /> and with distance from these data points No other warranty,expressed or implied,is made as to the <br /> professional interpretations, opinions and recommendations contained in this report <br /> 1 <br /> Advanced GeoEnvironmentai,Inc <br />