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Draft.• March 31, 1999 <br />Page 17 <br />' 6.1 Groundwater Sampling Methods <br />' Groundwater sampling will be performed in accordance with the standard operating <br />procedures (SOP) developed for the site. The SOP for groundwater sampling is included as <br />' Appendix C and provides detailed instructions on the following topics: <br />- Equipment required <br />' - Instrument calibration <br />- Well purging <br />' Sample collection <br />- Sample filtration <br />- Field QA/QC procedures <br />Clean, decontaminated equipment will be used for all sampling activities. Decontamination <br />t will be performed in accordance with the procedures given in Appendix D, Standazd Operating <br />Procedure for Equipment Decontamination. <br />' 6.2 Calibration Procedures and Frequency <br />' All instruments and equipment used during sampling and analysis will be operated, <br />calibrated, and maintained according to the manufacturer's guidelines and recommendations aswell <br />' as criteria set forth in the applicable analytical methodology references. Calibration, operation, and <br />maintenance will be performed by personnel properly trained in these procedures. Documentation <br />' ofall routine and special maintenance and calibration will be maintained in an appropriate field log <br />book. <br />' Field instrumentation will be calibrated on-site at the beginning of each sampling day, or at <br />any time that instrument readings aze questionable. Calibration of the pH, conductivity, and <br />' temperature meters will be performed as outlined in Appendix C, Standazd Operating Procedure for <br />Groundwater Sampling. <br />' 6.3 Data Reduction, Validation, and Reporting <br />6.3.1 Data Reduction <br />' Data reduction includes all processes that change the numeric value of the raw data. All field <br />data aze generated by directly reading the instrumentation (no calibration curves are generated). <br />' Therefore, no reduction of field data will be performed. <br />Agapito Associates, Inc. <br />1 <br />