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Site Health and Safety Plan <br /> ENSAFE RS&H <br /> Stockton Metropolitan Airport, Stockton, California <br /> January 27, 2020 <br /> decontamination will be performed in stainless steel buckets, on HDPE sheeting, using water that is <br /> laboratory-certified PFAS-free. <br /> Decontamination will be conducted at the wellhead, even if the equipment has been decontaminated <br /> after its last use. Clean sampling equipment will not be placed directly on the ground or other <br /> contaminated surfaces prior to insertion into the well. <br /> INVESTIGATION DERIVED WASTE MANAGEMENT <br /> IDW, in the form of surface soil cuttings and purge water, will be generated during field activities. <br /> Decontamination liquids will also be generated. IDW will be containerized in 55-gallon drums, <br /> properly labelled, and staged in a pre-designated area onsite. EnSafe assumes that one composite <br /> sample per media will be used to profile IDW drums. <br /> SITE RESTORATION <br /> Upon completion of soil boring activities, disturbed surfaces will be restored to pre-existing conditions. <br /> All equipment and supplies used during the investigation will be removed at the end of field activities. <br /> IDW will be staged in a temporary storage area identified by the SCK POC until characterization is <br /> complete and the waste is approved for pick-up and disposal. <br /> 11 <br />