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r r <br /> 1 <br /> 20 April 1998 <br /> AGE NC Project No 95-0109 t <br /> Pag'e' 4of5 <br /> , <br /> j in Appendix B v <br /> 5 v <br /> DISCiTSS10N AND CONCLiJSIONS <br /> Based upon data collected from the,site, AGE finds. <br /> J led have adequately <br /> am les representative of shallow ground water <br /> • Ground water elevation has continued to rise at the site All wells Sampled <br /> screened,intervals to collect ground water p <br /> composition <br /> ow direction continues to be toward the south-southwest at t 12 or MW- <br /> not ite <br /> Ground water flW_3,MW-6,M <br /> dxocarbons were detected in wells MW-2, In MW-75 MW-10 and MW <br /> petroleum by lin event, and were very <br /> 13 during the March 199 tin sampling Plume of dissolved hydrocarbons <br /> 11, demonstrating continued stability of the p drocarbons <br /> r tuber 1997 and March 1898, concentrations of petroleum by e, m ` <br /> • Between December in three wells`sampled at the site Changs ; <br /> increased inowereur erninolls rlland probablyle grepresent normal fluctuations <br /> concentrations les collected during the March 1998 <br /> MTBE was not detected in any of the ground water same <br /> • monitoring eventhtly, possibly due to the rise in , <br /> ed promote• Nutrient concentrations and bacterial co fat�onsrrema n below adequate levels to obe <br /> t ground water elevation Nutrient conc d hydrocarbon contaminants at the site and should <br /> significant biologic breakdown of by <br /> augmented to accelerate the remediation process <br /> ` <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends r <br /> s site closufe, a receptor well survey should be perfOed <br /> for eventual = T , <br /> In preparation erfornried for contamination remaining In <br /> ort modeling(RCBA) should be p g Process The <br /> • Fate and transp Dols should be determined in the modelin p , <br /> s time <br /> soil at the site Site soil clean-up g <br /> . of nutrient addition or Tel <br /> will be determined at thfor Tune 1998 <br /> t necessity <br /> ' � round 'water monitoring at the site should be scheduledwells M�_ <br /> The next quarterly g Reporting Program,monitoring <br /> In accordance with the Revised Nloiutanng <br /> and Repo g led'at that time <br /> ,T_7, 1V1W-8, MW-9,"MW-11, MW-12 and MW-14 will be sarnp ovtraaroental,Inc <br /> 6D M Advanced cea <br /> i <br /> z <br />