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Active Groundwater Sampling Standard Operating Procedure <br /> SWE-FSOP-401;Revision 1 Ahtna Southwest Environmental Operations <br /> its usability, and a new measurement is taken unless the PL approves otherwise. For water levels, the <br /> measurement is repeated. <br /> 6.0 Documentation Review <br /> The FTL is responsible for the daily review of the fieldwork documentation for compliance with <br /> requirements (Section 4.0 "Procedures") and legibility. Errors and omissions should be explained and <br /> revisions to an entry signed and dated by the FTL. <br /> 7.0 References <br /> U.S.Army Corps of Engineers, 2014.Safety and Health Requirements. EM 385-1-1. November 30 <br /> California Department of Toxic Substances Cotrol (DTSC), 2008. Representative Sampling of Groundwater <br /> for Hazardous Substances, Guidance Manual for Groundwater Investigations. February. <br /> U.S. Environmental Protection Agency(USEPA), 2017. Low Stress(low flow)Purging and Sampling <br /> Procedure for the collection of groundwater samples from monitoring wells. September. <br /> Page 14 of 14 <br />