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12 November 2010 <br /> AGE-NC Project No. 907-1587 <br /> Page 4 of 7 <br /> Survey data was uploaded to GeoTracker and correspond to confirmation numbers <br /> (Survey X-Y) 2692315638 and (Survey Z)1836254298. A new survey map and site plan <br /> were uploaded to GeoTracker and correspond to confirmation numbers (survey) <br /> 8461350798 and (Geomap) 3591269254. <br /> 2.4. MONITORING WELL SAMPLING <br /> On 08 October 2010, quarterly ground water monitoring event was conducted utilizing site <br /> wells MW-1A through MW-4B; all wells were sampled. The monitoring event was <br /> performed according to AGE's standard monitoring and sampling procedures, provided in <br /> Appendix E. Field data and logs are provided in Appendix C. No additional exceptions to <br /> AGE's standard procedures were noted. <br /> 3.0. FINDINGS <br /> The hydrocarbon-impact to ground water was quantified by laboratory analysis of the <br /> ground water samples. Ground water elevation and gradient was determined by utilizing <br /> data collected from the field. Ground water elevation, flow direction, and gradient were <br /> determined from field data collected on 08 October 2010. Hydrocarbon-impact to ground <br /> water was quantified by laboratory analytical data. <br /> 3.1. DEPTH TO GROUNDWATER AND STRATIGRAPHY <br /> Depths to ground water ranged from 20.28 (MW-1 A)feet to 23.00 (MW-3B)feet below the <br /> tops of the five new well casings. Dominantly fine-grained soil consisting of silt, silty clay, <br /> sandy clay, and sandy silt were encountered at depths sampled from 5 feet to 60 feet bsg. <br /> Boring log and well completion logs for these wells are included in Appendix B. Based on <br /> the findings from the previous soil borings, with existing monitoring well and soil boring <br /> data, the well were installed in the material representing the localized water bearing units <br /> at the site. <br /> 3.2. ANALYTICAL RESULTS OF SAMPLES <br /> No constituents of concern were reported in any soil samples. <br /> Total petroleum hydrocarbons quantified as gasoline (TPH-g)were detected in the ground <br /> water samples collected from the wells MW-1A, MW-16 and MW-213 at a maximum <br /> concentration of 8,500 microgram per liter (Ng/1). TPH-d was detected in the ground water <br /> Advanced GeoEnvironmen[al,Inc. <br />