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17 April 2006 <br /> AGE-NC Project No. 04-1207 <br /> Page 5 of 9 <br /> Conclusions and recommendations will also be included in the report,if applicable.The report will <br /> be in a format acceptable to the EHD and the CVRWQCB, and will be reviewed and signed by a <br /> California Professional Geologist. <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Professional Geologist.Procedures for soil boring advancement, SVE well installation,and ground <br /> water feasibility pilot testing procedures are described below. <br /> 4.1. SOIL PROBE BORING PROCEDURES <br /> The three soil probe borings will be advanced using a van-mounted Geoprobe 5400 direct-push <br /> probing unit equipped with 1.25-inch probing rods.The Geoprobe advances soil probe borings using <br /> a hydraulic hammer to drive soil sampling tools to specified depths. <br /> 4.1.1. Soil Sample Collection and Analysis <br /> Soil borings will be sampled at discreet 5-foot intervals using a 1.25-inch Geoprobe soil sampling <br /> assembly loaded with four 6-inch brass sleeves.Upon sample retrieval,the ends of the second sleeve <br /> will be covered with Teflon sheets, capped, and sealed with tape. <br /> Appropriately sealed and labeled samples will be placed in a chilled container and transported under <br /> chain of custody procedures to a DHS-certified laboratory for analysis for the constituents listed in <br /> Section 3.2. Each sample sleeve will be labeled with the boring designation, depth,time, date, and <br /> sampler's initials. Soil encountered in the borings will be visually classified by an AGE geologist in <br /> accordance with the Unified Soil Classification System(USCS).Additionally, soil samples will be <br /> field-screened for the presence of volatile organic compounds using an organic vapor meter(OVM), <br /> equipped with photo-ionization detector(PID). Soil sample descriptions and OVM readings will be <br /> recorded on a log for each boring. <br /> 4.1.2. Grab Ground Water Sample Collection and Analysis <br /> One grab ground water sample will be collected from the soil boring advanced east of well MW-1. <br /> The boring will be advanced to the top of the ground water table, as identified by collection of a <br /> saturated soil sample, to collect a grab ground water sample. Once ground water has been <br /> Advanced GeoEnvironmental,Inc. <br />