Laserfiche WebLink
1 <br /> 30 September 1996 <br /> AGE-NC-95-0112 <br /> Page 6 of 6 <br /> Borings installed during the next quarter will be placed near MW-1 and the former UST location <br />' An internal combustion engine-driven SVE system is being used to remove and destroy the <br /> hydrocarbon vapor recovered from the soil, a compressor-driven IAS system is being used to strip <br /> dissolved hydrocarbons from ground water Due to the Iow concentrations of extracted <br /> hydrocarbons,the extraction unit should soon be replaced with a blower/carbon canister system This <br /> will reduce the costs of supplemental fuel and the level of disturbance to neighboring businesses due <br />' to the noise generated by the current SVE unit <br /> Hydrocarbon concentrations in ground water continued to decrease in MW-1 during the July 1996 <br /> monitoring Benzene and toluene were not detected in the sample collected from MW-1 Petroleum <br /> hydrocarbons were not detected in any of the other monitoring wells sampled in July 1996 MTBE <br />' was not detected in either soil or ground water samples collected at the site The sparging/extraction <br /> system appears to have promoted a decrease in dissolved hydrocarbon concentrations in ground <br /> water at the site without spreading the contaminant plume The next quarterly ground water <br />' monitoring will be scheduled for October 1996 Samples for the October 1996 monitoring will again <br /> be analyzed for MTBE in addition to TPH-g and BTE&X <br /> 5.0 LIMITATIONS <br /> 1 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 upon <br />' analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points(e g monitoring wells, soil probings)and subsurface conditions may vary away <br />' from these data points No other warranty, expressed or implied, is made as to the professional <br /> recommendations contained in this report <br />