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Work Plan, PFAS Site Inspection Naval Computer and Telecommunications Station Stockton, California Waste Management Plan 4-1 DCN: TRBW-0202-5183-0010 Section 4 Waste Management Plan During field investigation activities the following IDW are anticipated to the generated: 1. Soil Cuttings: Soils generated during drilling activities and associated concrete or surface materials removed prior to drilling. 2. Purge Water: Water extracted from temporary and existing wells during sampling purging. 3. Decontamination Water: Water contained during decontamination of drill rig and non- disposable downhole equipment and sampling equipment. 4. Municipal Wastes: General refuse, packing materials, PPE, and disposable sampling equipment and materials. Disposable sampling equipment and materials includes bentonite, grout, and PVC from temporary well installation. There is one waste generation and collection-disposal event for the sampling activities. Non- hazardous wastes will generally be collected and disposed of less than 60 days from generation. If hazardous wastes are identified, additional collection events may be scheduled to assure removal of the wastes before 90 days from generation. Waste streams generated from field work are anticipated to be composed of soil and water. The municipal wastes will only consist of non- hazardous material and will not require characterization. These materials will be disposed of as regular trash at a municipal receptacle. There are no known listed (F, K, P , or U) Resource Conservation and Recovery Act (RCRA) waste codes associated with the environmental media at the site. Soil cuttings will be containerized in 55-gallon drums until the waste can be characterized and disposed at an off-site facility. A composite sample will be collected from the drums and submitted to the laboratory for characterization of PFAS. Once the soil IDW has been profiled and accepted by the solid waste disposal facility, the drums will be transported off -site. Currently, PFAS are classified as non-hazardous wastes; therefore, solid wastes may be disposed of at a RCRA Subtitle D Landfill. Purge and decontamination water generated during groundwater sampling will be contained in 55- gallon drums. A sample will be collected and submitted for laboratory analysis for PFAS. If the combined concentration of PFOA and PFOS is less than 70 parts per trillion (ppt), the water does not need to be treated and there are no restrictions on the disposal. For IDW water with a combined concentration of PFOA and PFOS greater than 70 ppt, the water will be treated on-site via granular activated carbon filtration such that the combined PFOA and PFOS concentration is less than 70 ppt and then disposed of at an approved off-site facility. Weather-resistant USEPA non-hazardous waste stickers will be affixed and located on the upper one-third of each 55-gallon drum. All Department of Transportation requirements associated with