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03 August 2005 ` . �• ; .'• .. "• . • � .' �' <br /> AGE-NC Project No. 95-0106 ; <br />' Page 3 of 4 <br /> No additional analytes were detected at or`above laboratory reporting,limits iri wells MW-1 and <br />' MW-4. No analytes were detected at.or above laboratory reporting limits in wells MW-2, MW-3; , <br /> MW-5, MW-6'(upper), MW-6.(lower) and MW-7. Analytical results of'ground water samples are <br /> Isummarized in"Table.2. The laboratory report (CTEL -Project-No: CT214-0503222), quality t <br /> assurance/quality.control(QA/QC)reports and chain ofcustody forms are included in Appendix C. <br /> Documents confirming the.upload'of laboratory,electronic deliverable format(EDF)files and depth <br /> .to water measurements to GeoTracker are'included in Appendix D. <br />' 4.0: SUMMARY AND CONCL',USIONS <br /> The following conclusions were drawn-from the results of the site investigation: ; <br /> The •round'water flow direction.was.generally northward on 22 March 2005 a# gradients <br /> - g. g Y � <br /> ranging between 0:02 ft/ft�and 0.006 ft/ft. Ground water elevations increased slightly but <br />' continue to flow in a northerly direction: <br /> TPH-g was detected in ground water'samples from 'monitoring well MW-4, located <br />' •, down-gradient off-,site from the former UST excavation.Concentrations of dissolved TPH-g <br /> decreased this quarter to non-detect in well MW-L. 0 D 144 pfetA rf , t <br /> • BTEX compounds were detected in the ground,water samples collected from MW-1 and <br />' MW-4. <br /> • 1,2-DCA concentrations decreased this quarter to non-detect in well MW-4. , <br /> MTBE was not detected in the watersamples collected,from :the 'site for the fh <br /> consecutive quarter. <br /> 5.0. RECOMMENDATIONS <br /> Based on this and previous site investigations, AGE recommends-,continued'quarterly monitoring <br /> of the,well network. The second quarter_2005 monitoring event was performed in June 2005:. <br /> 5A. •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 upon <br /> analytical results provided by an ,independent laboratory. Evaluations .,of the hydrogeologic <br /> conditions at the.site for the purpose of this investigation are made from a limited number,of <br /> Advanced GcoEnvironmental,Inc. <br />