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AECOM Standard Operating Procedure DPT Groundwater Sampling 1 .0 Purpose, Scope, and Applicability This Standard Operating Procedure(SOP)was prepared to inform AECOM personnel of the methods for direct-push sampling for groundwater and subsequent borehole abandonment and site restoration. Direct-push technology(DPT)is used to rapidly bore into the soil for groundwater collection without generating soil cuttings. 2.0 References • ASTM D 6001, Guide for Direct Push Water Sampling for Investigations. • A Compendium of Superfund Field Operations Methods(EPA/540/P-87/001). • SW-846, Test Methods for Evaluating Solid Wastes PhysicavChemical Methods. 3.0 Safety Considerations Environmental samples may consist of,or may be preserved with,caustics and/or acids that can cause burns if the material should come in contact with the skin. The sample collection site may introduce additional health and safety concerns. Entering the site and/or the handling of samples should always be done with care and using the appropriate personal protective equipment(PPE). Prior to entering the site or handling samples or chemical preservatives,each AECOM staff member should read and understand corresponding Material Safety Data Sheets (MSDSs), the AECOM corporate Health and Safety Plan, and any project-specific Health and Safety procedures. Compliance with all applicable PPE and other health and safety procedures presented in these documents must be a priority of each sample collection effort. 4.0 Equipment 4.1 DPT Sampling Equipment The DPT subcontractor will need a copy of the work plan,QAPP,and/or appropriate health and safety gear. The DPT subcontractor will provide all additional equipment and materials. Equipment should include at minimum the following items: • Maps/plot plan. • Global Positioning System(GPS)to locate sampling points. • Survey stakes or flags. • Hydraulic ram with hammer assembly. • 1-to 1.5-in. diameter drill rods. • Water sampling device such as Geoprobe®, Hydrocone®, stainless steel mini-bailer, Teflon® tubing and peristaltic pump,or an equivalent device.