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ARCADIS <br /> 3.8 Decontamination Procedures <br /> Equipment that comes into contact with potentially contaminated soil will be <br /> decontaminated consistently to assure the quality of samples collected. Disposable <br /> equipment intended for one-time use will not be decontaminated, but will be packaged <br /> for appropriate disposal. Before and after each use, reusable sampling equipment or <br /> containers will be properly decontaminated. All hand-augering and sampling devices <br /> used will be decontaminated using the following procedures: <br /> • Alconox or Liquinox and tap water wash, using a brush if necessary <br /> • Tap water rinse <br /> • Initial deionized/distilled water rinse <br /> • Final deionized/distilled water rinse <br /> • Set on clean plastic sheeting to air dry <br /> 3.9 Investigation-Derived Waste Management <br /> In the process of collecting environmental samples during on-site soil and groundwater <br /> sampling, different types of potentially contaminated investigation-derived wastes may <br /> be generated that include the following: <br /> • Used personal protective equipment (PPE) <br /> • Disposable sampling equipment <br /> • Decontamination fluids <br /> • Soil cuttings <br /> Used PPE will be disposed of in a plastic garbage bag and then into a sanitary waste <br /> disposal receptacle. Other waste such as disposable sampling equipment will also be <br /> disposed of in garbage bags and then into a sanitary waste disposal receptacle. Field <br /> sampling equipment will be decontaminated on-site over the native soil based on <br /> historical analytical data and low concentrations of COPCs. Soil cuttings generated <br /> from soil sampling activities will be placed back in the borehole. <br /> 4.0 FIELD VARIANCES <br /> Because field conditions may not be as anticipated, it may become necessary to <br /> implement modifications to the SAP that is presented in Section 3.0 of this PEA Work <br /> Plan. Field personnel will notify the ARCADIS project manager when deviations from <br /> this Work Plan appear necessary. The DTSC project manager will be notified of the <br /> proposed modifications, and a verbal (for minor modifications) or written (for major <br /> modifications) approval will be obtained from the DTSC before implementing the <br /> Page 26 wp-PEA-Gordon-Jul10-RV009808.doc: <br />