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18 June 2001 <br /> AGE-NC Project No. 98-0433 <br /> Page 4of8 <br /> 2.6. 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 and applicable recommendations <br /> will be included in the report. The report will be in a format acceptable to the PHS-EHD and the <br /> CRWQCB-CVR, and will be reviewed and signed by a California Registered Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE geologist under the supervision of a California <br /> Registered Geologist. Procedures for the advancement.of borings, soil sampling, well construction, <br /> ground water sampling, equipment decontamination and sample shipment are outlined below. <br /> 3.1. PROBE BORING ADVANCEMENT AND SAMPLING _ <br /> Probe borings will be advanced using AGE's 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 /> or pneumatic hammer to drive-soil and ground water sampling tools to specified depths. Soil probe <br /> borings will be advanced to 45 feet bsg. <br /> Soil samples will be collected at five-foot intervals, beginning at 20 feet bsg, using a Geoprobe <br /> sampler and four brass sleeves. Upon sample retrieval,the second brass sleeve will be removed from <br /> the sampler. The exposed ends of the second sleeve will be covered with Teflon sheets, capped and <br /> sealed with tape. Soils encountered in the borings will be visually classified by an AGE geologist <br /> in accordance with the Unified Soil Classification System(USCS ASTM D-2487).Additionally,soil <br /> samples with be field screened for the presence of volatile organic compounds using-an organic <br /> vapor meter(OVM). <br /> Following sample collection, each preserved sample sleeve will be labeled with the boring location, <br /> depth, time, date and sampler's initials. Appropriately sealed and labeled samples will be placed in <br /> a chilled container under ice and transported under chain-of-custody procedure to a Department of <br /> Health Services-certified laboratory. <br /> 3.2. GRAB GROUND WATER SAMPLING PROCEDURES <br /> For the collection of"grab"ground water samples,both borings will be advanced to 35 feet and 45 <br /> feet bsg. The Geoprobe push driven water sampling device will be advanced four feet into the water <br /> Advanced GeoEnvironmental,Inc. <br />