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Kennedy/Jenks Consultants Appendix D : Standard Operating Guideline - Groundwater Sampling 13.1 Introduction This Standard Operating Guideline (SOG) provides the procedures typically followed by Kennedy/Jenks Consultants personnel during the collection of groundwater samples from monitoring wells. Groundwater sampling from temporary boreholes (e.g., grab groundwater samples collected from direct push borings) is not addressed by this SOG. This SOG provides guidance on procedures that are generally consistent with standard practices used in environmental sampling. Federal, state and/or local regulatory agencies may require groundwater sampling procedures that differ from those described in this SOG and/or may require additional procedures. As guidance, this SOG does not constitute a specification of requirements for groundwater sampling. Deviations from, and additions to, the procedures described herein may be appropriate based on project-specific sampling objectives, site-specific conditions, and/or regulatory requirements. The user of this SOG should modify the sampling procedures used, as appropriate, to conform to the project-specific requirements and then document such deviations from this SOG in the project-specific documentation of groundwater sampling activities. This SOG does not address Quality Assurance/Quality Control (QA/QC) procedures for groundwater sampling in detail. While some general QA/QC procedures are addressed, project- specific QA/QC procedures should be developed and presented in a Quality Assurance Project Plan (QAPP), field sampling and analysis work plan, or other project- or activity-specific document. This SOG contains the following sections: • Field Equipment/Material • Typical Procedures for Monitoring Well purging and Groundwater Sampling • Stabilization Criteria for Adequacy of Monitoring Well Purging • Typical Procedures for Groundwater Sampling using Passive Diffusion Bags (PDBs) • Quality Control Guidance • Investigation-Derived Waste (IDW) Management • References D.2 Field Equipment/Materials Material/equipment typically required for the collection of groundwater samples from monitoring wells may include: • Electric water-level monitoring probe • Bladder pump, peristaltic pump, pre-cleaned, disposable, 2- or 4-inch bailers with disposable cord, inertial pump, submersible pump, passive diffusion bags or other suitable apparatus for purging the well and sampling • Flexible discharge tubing (polyethylene (PE), Teflon TM, or similar] • Purge water collection container Monitoring Well Installation Work Plan, D-1 Barrel Ten Quarter Circle Land Company, Escalon, California \\SFO\Groups\I S-Group\Admin\Job\03\030118.27_BTQCLC\09-Reports\M W-Install-W Pln\Appendi xW PP_D.doc