ARCHIVED REPORTS_WORK PLAN TO ESTABLISH BACKGROUND SOIL CONCENTRATIONS

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GE • GENESIS ENGINEERING&REDEVELOPMENT Background Concentrations,this position has the authority and organizational freedom to identify problems, initiate or provide solutions, verify implementation of solutions, and, if necessary, to stop work. Thomas deArth will be the Corporate Health and Safety Officer for the Project. 2.6 Quality Assurance Manager The Quality Assurance Manager will be responsible for reviewing data deliverables (both hard copy and electronic data deliverables)to ensure their consistency with corporate data entry and analyses procedures and with the Data Quality Objectives as outlined in Section 4. The QA Manager will review the analytical laboratory's QA/QC results, and may audit the analytical laboratory's QA/QC policies and procedures. The QA Manager will identify deviations from corporate QC procedures and will report them directly to the Executive Management Team with a copy to the Project Principal and Project Manager. Todd Williams will be the Quality Assurance Manager for the Project. 2.7 Laboratory Quality Control Manager The Laboratory QC Manager will be designated by the subcontracted State of California • Certified analytical laboratory and is responsible for ensuring that the analytical laboratory implements the requirements of this QAPP. 3.0 ANALYTICAL PROGRAM Soil, drilling mud, and groundwater samples will be collected and analyzed for the constituents outlined in the SAP. Analytical test methods are set forth by the U.S. Environmental Protection Agency(U.S. EPA) in Test Methods for Evaluating Solid and Hazardous Wastes, Physical and Chemical Methods (SW-846). 4.0 DATA QUALITY OBJECTIVES Data Quality Objectives are qualitative and quantitative statements developed by data users to specify the quality of data needed from a particular data collection activity to support specific decisions or regulatory actions. The process for developing Data Quality Objectives is described in Data Quality Objectives for Remedial Activities(U.S. EPA 1987). Data gathered during the investigation to Establish Background Concentrations will be used to evaluate the nature and extent of compounds present in native soil and groundwater and establish soil and groundwater cleanup guidelines for Clean Closure of the Site. Therefore, the data collected for this Investigation must be scientifically sound; defensible; and of • William DePaoli Property 3 of 21 Quality Assurance Project Plan February 2012