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APPENDIX C <br /> Diamond Pet Food Processors of Ripon,LLC June 30,2011 <br /> Report of Waste Discharge—Groundwater Sampling Plan Page I of 7 <br /> GROUNDWATER SAMPLING PLAN <br /> Proper sampling procedures are a critical component of an effective monitoring program. All <br /> environmental quality sampling at the site will be accomplished by personnel trained in proper <br /> sampling protocol. This plan presents site-specific methods to be used to sample groundwater and <br /> leachate liquids. Protocols and methods described in this plan are generally consistent with those <br /> recommended by the American Society for Testing and Materials (ASTM)water quality sampling <br /> standards. <br /> MONITORING POINT INSPECTION <br /> Before each monitoring well is sampled, the condition of the well being sampled and its surroundings <br /> will be examined and noted on the Field Sampling Data Sheet(FSDS). This information includes the <br /> condition of the well identification, security casing, concrete footing, evidence of tampering, and <br /> signs of surface contamination. If a damaged well is discovered in the field, monitoring staff will <br /> notify Central Valley Regional Water Quality Control Board(CVRWQCB)promptly. <br /> GROUNDWATER ELEVATION MEASUREMENTS <br /> Before purging and sampling,the depth to groundwater will be measured using an electronic sounder <br /> in all accessible network wells using the following procedure: <br /> • The well cover will be unlocked and the well cap removed. <br /> • Water level will be measured with an electronic sounder. <br /> • The water-level indicator will be decontaminated before its use in each well to reduce the <br /> potential for cross-contamination. <br /> • Water levels will be recorded on the field sampling data sheet(FSDS)to the nearest 0.01 foot. <br /> • The date (month, day, and year) and time (24-hour clock) of each measurement will be <br /> recorded. <br /> Groundwater depths will be recorded and a record of the measurements left at the site after each day <br /> those measurements are made. The groundwater depth data will be used to compute groundwater <br /> elevations, flow directions, gradients, and velocities. <br /> FIELD METER OPERATIONS <br /> Field meters will be used to measure water quality parameters during sample collection. Field meters <br /> will be used routinely to measure pH, specific conductance (EC), turbidity, and temperature. The <br /> sampler must have backup meters available in the event that the primary meter malfunctions. The <br /> sampler must maintain and calibrate the meters at recommended frequencies and maintain a logbook <br /> or other acceptable documentation that records the maintenance and calibration on each meter. <br /> 010070.00, Task I Lawrence&Associates <br /> w:Iclientsldiamond pet foods1010107.00-ripon rowdldiamondpet_rowd_june2011 draft.docx <br />