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i a <br /> 10 September 2009 <br /> AGE-NC Project No. 09-1714 j <br /> Page 4 of 5 <br /> Selected soil samples from the probe borings will be analyzed by a State of California Department <br /> of Public Health (CDPH)-certified laboratory for some or all of the following constituents: <br /> • Total petroleum hydrocarbons(carbon chain analysis),with specific identification of motor <br /> oil and hydraulic fluid,where appropriate,in accordance with EPA Method 8015 Modified. <br /> • Chlorinated pesticides in accordance with EPA Method 8080. <br /> Initially, for most borings, only a single shallow sample from each boring will be submitted for <br /> analysis.If analytes are reported,a second deeper sample maybe submitted for assessment purposes. <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 /> 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 the advancement of borings, soil sampling, equipment <br /> decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> Seventeen probe borings will be advanced using a van-mounted Geoprobe 5400 direct-push probing <br /> unit equipped with 1.25-inch probing rods. The Geoprobe advances soil probe borings using a <br /> hydraulic hammer to drive soil sampling tools to specified depths. <br /> Two borings will be advanced to total depth using a hand auger within the mechanic's pit. Prior to <br /> advancement with the hand-auger, concrete will be removed at the boring locations. <br /> Advanced GeoEnvironmental,Inc. <br />