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_ Kennedy/Jenks Consultants <br /> SOG 4: Standard Operating Guideline <br /> Groundwater Sampling <br /> 4.1 Introduction <br /> This guideline describes procedures typically followed by Kennedy/Jenks Consultants (K/J) <br /> personnel during groundwater sampling of monitoring wells. <br /> 4.2 Equipment/Materials <br /> Water level depth probe <br /> Centrifugal surface pump <br /> 1-inch dedicated PVC hose for each shallow monitoring well <br /> • Laboratory-cleaned or sanitized disposable bailers with disposable cord <br /> • Submersible pump <br /> Bottom-emptying bailer (2- or 4-inch diameter) <br /> Temperature and specific conductivity meter <br /> • pH meter <br /> • Appropriate glassware and sample containers <br /> • K/J's Groundwater Purge And Sample forms (F-43) <br /> 4.3 Typical Procedure <br /> All data and information collected during this procedure shall be recorded on K/J Groundwater <br /> Purge And Sample form (F-43). <br /> 1. Prior to groundwater sampling, make initial measurements of depth to static water level and <br /> total casing depth in all wells to be sampled. Calculate the total well volume of water for purge <br /> volumes for each well. <br /> 2. Initiate purging, using one of the following methods: <br /> a. A centrifugal surface pump with dedicated 1-inch I.D. clear flex suction hose with check <br /> valve, placed with the hose intake near the casing bottom, if the groundwater depth is less <br /> than approximately 25 feet. <br /> b. Laboratory-cleaned or disposable bailers. <br /> c. A submersible pump placed above or below the screen section if the water level is greater <br /> than 25 feet. <br /> 3. At the beginning of purging, and periodically afterwards, collect a sample of purged groundwater <br /> in a clean container and record the following field parameters/observations. <br /> a. Purge volume and time <br /> Groundwater Protection Work Plan, The Wine Group SOG 4 <br /> Franzia Winery, Ripon, California 1 <br /> gts9rwpl ftn V iO3iO30120.01 wmegroupl0 pMsWvaXplanlaWmdres4 gwsxrp.doc <br />