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Phase II Sampling and Analysis Plan SOP-2—Drilling and Sampling <br /> Port of Stockton-Rail and Bridge,Stockton,CA FN <br /> Drilling locations will be cleared for underground and aboveground utilities prior to beginning drilling <br /> activities. Prior to setting up on the drilling location, the FTL will confirm the location has been <br /> cleared with the appropriate utility companies and the property owner/tenant. Drilling will only <br /> proceed where no aboveground or subsurface obstructions exist. Locations will be offset if these <br /> obstructions are identified prior to drilling or encountered after drilling has begun. The new locations <br /> will be as close as possible to the originally proposed locations; utility clearance will be performed <br /> again as necessary. <br /> If drilling is to occur in the vicinity of overhead utilities, HDR personnel will measure utility line height <br /> from the ground surface using a clinometer(or similar device) to ensure a minimum safe clearance <br /> distance is maintained between on-site equipment and overhead utility lines. As needed, the <br /> appropriate utility company will be contacted in order to determine a recommended safe clearance <br /> distance from aboveground or underground on-site utilities. <br /> Prior to the start of drilling activities, the drilling subcontractor will hand clear each drilling location to <br /> a depth of at least 5 ft bgs, in order to verify that underground utilities or other hazards are not <br /> present. Borings performed to 3 ft bgs will not be hand cleared. <br /> 3.1 Personal Protective Equipment for PFAS Sampling <br /> Manufacturers use the oil and water repellency property of PFAS to produce water or stain resistant <br /> apparel, cosmetics, sunscreens, and insect repellents. Due to the ubiquitous presence of PFAS in <br /> these waterproof and dirt- or stain-resistant consumer products, typical PPE may contain PFAS that <br /> could contaminate samples. Table 3.1 summarizes the allowable and prohibited PPE during PFAS <br /> sampling collection and handling. To ensure the field blank, rinsate blank, and samples do not get <br /> contaminated, it is recommended to wear the listed allowable clothing and boots and to not handle <br /> personal care products or food containers within the sampling area. <br /> Table 3.1. Prohibited and Allowable PPE for PFAS Sampling <br /> Gloves 0 Latex Gloves 0 Powderless Nitrile Gloves <br /> Apparel 0 Polyethylene fiber suits 0 Safety boots made from polyurethane and/or <br /> • Washed with fabric Polyvinyl chloride(PVC) <br /> softener • PFAS free over-boots for steel-toed boots <br /> • Washed with water, dirt, • Synthetic and natural fibers (e.g., cotton)that <br /> and/or stain resistant are well laundered (more than six times with <br /> chemicals no fabric softener) <br /> • Tyvek suits 0 PVC or wax-coated fabrics <br /> • Neoprene <br /> Personal Care Products 0 Chemically treated for UV 0 Organic or PFAS-free <br /> (e.g., cosmetics, protection <br /> moisturizers, sunscreen, 0 Chemically treated for <br /> chap stick) insect resistance <br /> Product Examples . Gore-Tex, Tyvek, Teflon® • Sunscreens: Banana Boat Sport Performance, <br /> Fabric Protector, Meijer Sunscreen Lotion, Neutrogena Ultra- <br /> GreenShield®NK Guard S Sheer Dry-Touch <br /> Series, Repellan KFC®, 0 Insect Repellants: OFF Deep Woods, Sawyer <br /> and RUCO® Permethrin, Jason Natural Quit Bugging Me <br /> 2-2 <br />