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19 December 2011 <br /> AGE-NC Project No. 11-2006 <br /> Page 2 of 5 <br /> SCOPE OF WORK <br /> Based upon results of the previous investigations and considerations presented by the <br /> current and potential property owners, AGE proposes to advance a total of four (4) <br /> additional soil borings at the site for the collection of soil, grab ground water and vapor <br /> samples. Two soil borings (B7 and B8) will be advanced at the northern edge of the site <br /> for collection of soil and grab ground water samples. Two borings (V1 and V2) will be <br /> advanced along the southern side of the onsite building for the collection of soil-vapor <br /> samples. Boring locations may be modified in the field depending on site conditions. <br /> Approximate boring locations are illustrated in Figure 1. <br /> All borings will be advanced using a GeoProbe®or PowerProbe®direct-push drill rig. Soil <br /> samples will be collected at boring B7 and B8 at five-foot intervals. Grab ground water <br /> samples will be collected from 24 to 30 feet bsg at each boring. Vapor samples will be <br /> collected at a depth of 5 feet bsg. <br /> Soil and grab ground water samples will be submitted to a California Department of Public <br /> Health (CDPH)-Certified laboratory and selected samples will be analyzed for: <br /> • Total petroleum hydrocarbons (TPH-all) in accordance with EPA-method 8015- <br /> modified. <br /> • Volatile organic compounds (VOCs) in accordance with EPA-method 82608. <br /> • CAM 17 Metals, in accordance with EPA-method 6010B <br /> Soil vapor samples will be submitted to a CDPH-Certified laboratory and will be analyzed <br /> for: <br /> • TPH-all in accordance with EPA-method TO-3. <br /> • VOCs in accordance with EPA-method TO-15. <br /> Upon completion of the field work and receipt of laboratory analysis, a brief report will be <br /> prepared. The report will be reviewed and signed by a California Professional Geologist. <br /> PROBE BORING ADVANCEMENT <br /> Probe borings will be advanced using a van-mounted Geoprobe®5400 or Truck-mounted <br /> PowerProbe®direct-push probing unit equipped with 1.25-inch or2-inch probing rods.The <br /> Geoprobe®advances soil borings using a hydraulic hammer to drive soil and ground water <br /> Advanced GeoEnvironmental,Inc. <br />