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.I <br /> I <br /> N)GA-ROVERS Mr. Michael hrfuma <br /> & ASSOCIATES November 26, 2008 - <br /> Laboratory Analyses: Selected soil samples and groundwater samples will be collected and <br /> analyzed by a State-certified laboratory for the constituents of concern. <br /> Well Development and Sampling: Blaine Tech Services, Inc. (Blaine) of San Jose, California <br /> will develop the wells prior to sampling or injection events. <br /> Wellhead Survey Activities: Following injection well installation, a licensed surveyor will <br /> survey the latitude/longitude to NAD83, and well head elevation to mean sea level in compliance <br /> with AB2886 (Geotracker) requirements. <br /> Report Preparation: Following the receipt of analytical results from the laboratory, CRA will <br /> prepare a written report, which will include field procedures, laboratory results, boring logs, and <br /> conclusions. <br /> ISCO INJECTION <br /> Equipment: The equipment necessary to perform ISCO is a mixing tank with secondary <br /> containment, mixing equipment, and delivery hoses and fittings. <br /> Permits: CRA will submit a notice of intent (NOI) to comply with the terms of General Waste <br /> Discharge Requirements Order No. R5-2008-0149 to the California Regional Water Quality <br /> Control Board of the Central Valley Region. <br /> Site Health and Safety Plan: Pursuant to OSHA and Shell requirements, CRA will prepare a <br /> comprehensive site safety plan to protect site workers. The plan will be kept on site during field <br /> activities and will be reviewed and signed by each site worker. Air monitoring will be conducted <br /> using a photo-ionization detector during injection events. Appropriate personal protective <br /> equipment will be used to ensure that hydrogen peroxide solution does not come into contact with <br /> bare skin or the eyes as it can produce burns. If frothing, bubbling, or steam production occurs as <br /> the solutions are injected, injection will be slowed or halted until the reaction subsides. <br /> Groundwater Monitoring: Various gauging and monitoring activities are proposed in relation to <br /> the injection events, and are detailed as follows: <br /> • Baseline Monitoring Event: Baseline samples will be collected and analyzed as part of <br /> the bench-test treatability study. Dissolved oxygen (DO), pH, and oxygen reduction <br /> potential (ORP) will be field measured. Samples will be analyzed for total dissolved <br /> solids, metals, electrical conductivity, sulfate, TPHg, BTEX, MTBE, and TBA. <br /> 240783 6 <br /> Worldwide Engineering, Environmental, Construction, and IT Services <br />