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Geosyntec <br /> consultants <br /> • One equipment blank will be collected during each day of groundwater <br /> sampling. The equipment blanks will be collected by pouring organic-free, <br /> deionized water provided by Curtis & Tompkins over the stainless steel bailer <br /> following decontamination; and <br /> • Trip blanks consisting of organic-free, deionized water will be prepared by the <br /> laboratory and will accompany the sample containers during transport prior to, <br /> during, and after sampling. The trip blank sample bottles will not be opened. <br /> All QA/QC samples will be analyzed for toluene by EPA Method 8260B. <br /> 2.2.6 Site Restoration and Investigation-Derived Waste (IDW) <br /> Following CPT, MIP, and groundwater sampling, the borings will be grouted using the <br /> tremmie method from the bottom up. All grouting will be conducted under the <br /> supervision of the County. Ground surfaces will be completed to match surrounding <br /> surfaces (e.g.,dirt, asphalt, or concrete). <br /> Soil cuttings, decontamination water, and purge water generated during investigation <br /> activities will be labeled and stored at the Site in Department of Transportation- <br /> approved containers, pending characterization and disposal at an appropriate off-Site <br /> facility. <br /> 2.2.7 Preliminary Data Evaluation and Reporting <br /> Geosyntec will evaluate the CPT, MIP, and groundwater analytical results and provide <br /> the RWQCB with recommended locations for a minimum of four groundwater <br /> monitoring wells. The preliminary data evaluation will be documented in a brief letter <br /> report to the RWQCB that will include a table summarizing the groundwater analytical <br /> results, a map showing the sample locations and recommended well locations, and a <br /> proposed well construction diagram. <br /> 2.3 Task 3—Monitoring Well Installation and Development <br /> Following RWQCB acceptance of the proposed well locations, the monitoring wells <br /> will be installed in the uppermost groundwater zone to evaluate Site groundwater flow <br /> conditions and the concentrations and extent of toluene in groundwater at the Site. A <br /> minimum of four, two-inch diameter groundwater monitoring wells will be installed. <br /> Final Work Plan.doe 9 27 June 2012 <br />