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Groundwater Monitoring <br /> Well Installation and <br /> ARCADIS Sampling Work Plan <br /> PG&E McDonald Island <br /> Compressor Station <br /> 3.8 Investigation-Derived Waste <br /> Investigation derived waste(IDW)generated during investigation activities will likely <br /> include soil cuttings, decontamination fluids, purge water, personal protective <br /> equipment(PPE), and other disposable sampling materials. Soil cuttings derived from <br /> drilling as well as wastewater from decontamination procedures and purgewater from <br /> well development and the collection of groundwater samples will be placed in 55-gallon <br /> drums. PPE, such as nitrile gloves, and disposable supplies or other household-type <br /> waste, such as paper and plastic,will be treated as municipal waste. One composite <br /> soil sample and one composite water sample will be collected from the IDW drums to <br /> characterize the waste for disposal. Pending characterization, the IDW will be stored <br /> on-site in a secure and controlled area. Containerized waste will be disposed of in <br /> accordance with PG&E,waste hauler,waste handling facility, and state and federal <br /> requirements. <br /> 3.9 Quality Assurance and Quality Control Procedures <br /> To verify that the analytical data collected during the investigation is valid and useable, <br /> the data will be evaluated using a standard quality assurance and quality control <br /> (QA/QC)program. <br /> Field QA/QC procedures will include calibration of sampling equipment(including the <br /> PID and water quality parameter meter), the use of standard chain of custody <br /> procedures for sample control, and written and visual documentation of field activities <br /> in daily field logs and by photograph. One field groundwater duplicate and one <br /> equipment rinsate blank per day will be collected to assess the accuracy and precision <br /> of field sampling methods. <br /> The degree of laboratory accuracy and precision will be established by evaluating <br /> method blanks, laboratory control samples, matrix spike samples, and surrogate <br /> quality control sample results.All comments reported by the laboratory will be reviewed <br /> during this evaluation and incorporated into the summary report as necessary. <br /> Modonald Island Addtl MW Installation Work Plan oocx 8 <br />