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1. INTRODUCTION <br /> 1.1 Overview <br /> This Standard Operating Procedure(SOP)provides details on the direct push technology <br /> (DPT) drilling for grab groundwater sampling methodology. The soil boring and <br /> groundwater sampling SOP was prepared to direct field personnel in the methods for <br /> recording soil boring observations,collecting subsurface soil samples,and collecting grab <br /> groundwater samples during Site investigations. The SOP conforms to the California <br /> Department of Water Resources (DWR) Water Well Standards Bulletin Numbers 74-81 <br /> and 74-90 (DWR, 1990), United States Environmental Protection Agency (USEPA) <br /> Groundwater Sampling and Monitoring with Direct Push Technologies (USEPA, 2005) <br /> and other pertinent technical publications. Field forms to be used during Site <br /> investigations are provided in attachments. <br /> Included in this SOP are the procedures, equipment needs, field documentation forms, <br /> project planning, and field implementation steps for specific field tasks. Overall, the <br /> SOPS listed below provide general methods and procedures that may be changed due to <br /> variations in field conditions. Such changes will be approved by the project manager and <br /> Port prior to implementation in the field. <br />