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backfilled with neat cement and finished with a concrete seal to attempt to match surface <br /> surroundings. <br /> 4.0 LABORATORY ANALYSIS <br /> Depending upon drilling conditions and the total number of borings completed, PEI plans on <br /> submitting up to 32 soil matrix (generally one per soil boring [24 samples], and two per groundwater <br /> boring [8 samples]) and 4 groundwater samples (one per temporary groundwater monitoring well) are <br /> planned to be analyzed. Fewer or additional samples may be collected as time and drilling conditions <br /> allow. The samples will be analyzed by California DTSC-certified laboratory(s), in accordance with <br /> EPA approved Methods. The soil samples will be selected based on visual and olfactory field <br /> observations, and potentially based on depth and location. The soil matrix and groundwater samples <br /> will be analyzed for: total petroleum hydrocarbons carbon chain (TPH-cc), by EPA method 8015M or <br /> 8260, and volatile organic compounds (VOCs) by EPA Method 8260. Selected samples (estimated as <br /> 12) will also be analyzed for the following: <br /> Semi-Volatile Organic Compounds (SVOCs)by EPA Method 8270 <br /> Organophosphorus pesticides by, EPA Method 8141A, <br /> Chlorinated pesticides via EPA Methods 8081, <br /> Chlorinated herbicides via EPA Methods 8151, <br /> CAM 17 Metals by EPA Method 6010 (or similar). <br /> Samples will be delivered or shipped to the fixed-base laboratory(s) under routine chain-of-custody <br /> protocols. A standard laboratory turnaround time of five business days will be requested. <br /> 5.0 REPORTING <br /> A letter report of findings signed by a California Certified Engineering Geologist and will be <br /> submitted to the Client. The report will include the following information: description of sampling <br /> procedures; results of laboratory analyses; findings, conclusions and any recommendations, as <br /> necessary. <br /> 6.0 RESIDUALS MANAGEMENT <br /> 6.1 Drill cuttings <br /> Drill cuttings from the bores will be drummed and securely stored on the commercial site <br /> until laboratory quantitative analysis results are received. These results will be used to determine <br /> the proper disposal of the drummed soil—i.e., to a hazardous waste facility or to a Class III <br /> landfill. <br /> Remediation Pilot Study Workplan Pinnacle Environmental,Inc. <br /> 248 Industrial Drive,Stockton,CA Page 6 <br />