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'January-1998 <br /> '• AGE-NC Project No. 95=0109 <br /> Page,4 of 4' <br /> - All wells •sampled'have adequately'screened,intervals .to-collect.ground water samples" <br /> representative of shallow ground water composition. - <br /> Petroleum;hydrocarbons'Were riot detected in wells_ MW-:b, MW-7,:MW=H or,.MW-12 _.. <br /> during the December 1997•saInpling,which indicates the dissolved hydrocarbon plurrie has - <br /> not migrated up-gradient-or down-gradient of these-points., <br /> Between September' and ,December •1997, concentrations of petroleum hydrocarbons r <br /> `decreasedin all'well s sampled at the site..- <br /> 'MTBE was not detected in any of the ground water samples collected during this,monitoring <br /> .,period. _ <br /> • -:Nutrient'concentrations and bacterial counts'are.not at-adequate levels to promote significant <br />'i . biologic breakdown of.hydrocarbon contaminants on the site and should be augmented to• . ; <br /> accelerate the remediation process. <br /> - p cess. _ . • . . <br /> 5.0. ' RECOMMENDATIONS <br /> • Based upon data collected from the site .AGE reconirnends: <br /> AGE is'in the process of obtaining a.waste dischargepermit or'waiver for nutrient addition <br /> ate the site. Nutrient addition should.-commence-upon receipt of the discharge,permit or <br /> approval of the waiver. <br /> Semi-annual''soil monitoring`should be. performed during 'the, first quarter.of 1998.,in <br /> conjunction with nutrient addition;if possible. ; <br /> 1 <br /> The next quarterly ground water monitoring at the site should be scheduled for-March 1998:' <br /> Iri accordance with'the Revised-Monitoring and'Reporting Program. all wells should be _ <br /> ;sainled at that time. ; <br /> 6.0. a LIMITATIONS. <br /> Our professional services'were perfonh d using that'degree of care and skill ordinarily-exercised by• <br /> hI _ <br /> = environmental consultants practicing in this or similar localities. The findings were.based upon field <br /> measurements..and-analytical results provided'by an-independenflaboratdry. Evaluations'of the,.,.' <br /> ti geologic/hydrogeologic conditions at the site for the purpose of this:investigation are made from a <br /> limited number of•available data points,(i.e.-ground.water samples) and subsurface conditions-may <br /> . vary away from these-data points. No.other:warranty, expressed°or,implied;'is made-as:-to .the , <br /> professional recommendations-contained in this.report: <br /> Advanced CeoEnvironmentai,Inc. ' <br />