Laserfiche WebLink
of r <br />11 August 2008 <br />AGE -NC Project No. 07-1569 <br />Page 4 of 5 <br />methyl tertiary -butyl ether (MTBE), and 1,2-dichloroethane (1,2 -DCA), in accordance with <br />EPA Method 8260. <br />Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br />(QA/QC) reports, and sample chain -of -custody documentation will be presented in a report with <br />findings and recommendations. <br />3.3. REPORT PREPARATION <br />Upon completion of field work and receipt of final laboratory analysis, a report will be prepared <br />presenting the findings of the investigation. The report will include a description of the work <br />performed and results of the sampling and analysis. Conclusions, applicable recommendations, and <br />maps will be included in the report. <br />All field procedures will be overseen by an AGE representative under the supervision of a California <br />Professional Geologist. Procedures for the advancement of soil borings, soil sampling, ground water <br />sampling, equipment decontamination, and sample shipment are outlined below. <br />4.1. PROBE BORING ADVANCEMENT <br />The probe boring will be advanced using a van -mounted Geoprobe 5400 direct -push probing unit <br />equipped with 1.25 -inch probing rods. The Geoprobe advances soil probe borings using a hydraulic <br />hammer to drive soil sampling tools to specified depths. <br />4.2. GRAB GROUND WATER SAMPLING PROCEDURES <br />For the collection of grab ground water samples, the soil probe boring will be advanced to the top <br />of the ground water table (approximately 20 feet bsg). Once ground water has been encountered, a <br />Geoprobe push -driven water sampling device will be advanced two to three feet into the water - <br />bearing zone. A grab ground water sample will be collected using a Geoprobe water sampling <br />assembly fitted with a pre -cleaned, one -inch diameter 0.01 -slotted temporary well screen. The <br />ground water sample will be extracted by lowering a polyethylene bailer through the hollow center <br />of the push rods into the screen section. <br />Advanced GeoEnvironmental, Inc. <br />