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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 /> • 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. Laboratory-cleaned or disposable bailers. <br /> b. 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 /> b. Temperature <br /> c. pH <br /> d. Specific conductance <br /> Monitoring Well Installation Work Plan SOG 4 <br /> Delicato Family Vineyards, Manteca, California Page 1 <br /> 9-*-g lP%8"4bGW7W76600f.�c•NutpW9-Vhf w install wn:pinlappento,ald pwsamp.h <br />