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01 September 2009 <br /> AGE-NC Project No. 09-1717 <br /> Page 5 of 6 <br /> 3.4. 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. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Registered Geologist. Procedures for the advancement of borings, soil sampling, equipment <br /> decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> The 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 /> 4.2. SOIL SAMPLE COLLECTION <br /> The soil borings will be sampled at discreet five-foot intervals using a 1.25 inch Geoprobe soil <br /> sampling assembly loaded with four six-inch stainless steel sleeves.Upon sample retrieval,the ends <br /> of the second sleeve will be covered with Teflon sheets, capped and sealed with tape. <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 CDPH-certified <br /> laboratory. Additionally, soil sample duplicates will be visually classified by an AGE staff scientist <br /> in accordance with the Unified Soil Classification System(USCS),and field screenedfor the presence <br /> of volatile organic compounds using an organic vapor meter(OVM)equippedwith a photo ionization <br /> detector(PID).Soil sample descriptions and OVM readings will be recorded on a log for each boring. <br /> 4.3. GRAB GROUND WATER SAMPLE COLLECTION <br /> Advanced GeoEnviron rental,Inc. <br />