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18 July 2008 <br /> AGE-NC Project No. 98-0452. <br /> Page 4 of 5 <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 /> 4.0. ADDITIONAL SITE ASSESSMENT FIELD PROCEDURES <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 borings, soil sampling, ground water <br /> sampling, equipment decontamination, and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> Probe borings 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 /> 4.1.1. Soil Sampling Procedures <br /> Soil samples will be collected from boring B6 at discrete five-foot intervals beginning at 25 feet bsg <br /> using a 1:5 inch Geoprobe soil sampling assembly loaded with four six-inch brass sleeves. Soils <br /> encountered in the borings will be visually classified by-an AGE scientist I geologist in accordance <br /> with the Unified Soil Classification System.Additionally,soil samples will be field-screened for the <br /> presence of volatile organic compounds using an organic vapor meter', equipped with <br /> photo-ionization detector. <br /> h <br /> 4.1.2. In-'Situ Ground Water Sampling Procedures <br /> For the collection of shallow grab ground water samples, soil probe borings B7 and B8 will be <br /> advanced to a depth of 10 feet bsg; for the collection of a deep grab ground water sample,soil probe <br /> boring B6 will be advanced to an approximate depth of 35 feet bsg . Once ground water.has been <br /> encountered,a Geoprobe push-driven water sampling device will be advanced two to three feet into <br /> the water-bearing zone. Grab ground water samples will be collected using a Geoprobe water <br /> sampling assembly fitted with a pre-cleaned,one-inch diameter 0.010-slotted temporary well screen. <br /> Each ground water sample will be extracted by lowering a polyethylene'bailer through'the hollow i <br /> Advanced GeoEnvironmental,Inc. <br />