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Electrical Conducti.vi - Electrical conduct-vlty meter <br /> Calibration, factory-calibrated annually and periodically <br /> calibrated against laboratory prepared standard cal-bratzcn <br /> solution <br /> 'dater Temperature- Mercury thermometers Calibration <br /> % factory-calibrated once. <br /> Combustible Gas/Oxygen- Combustible gas/o.cygen meter <br /> calibration. Factory calibrated, field calibrated monthly, <br /> zeroed daily <br /> Miscellaneous Measaring Devices Calibration procedures for <br /> any other measuring device used will be documented at the <br /> request of the regulatory authority <br /> �w All equipment will be checked daily and replaced as <br /> necessary. Instrument manuals and an _nstrument log book <br /> will accomoary equipment into the field. Any calibration, <br /> repairs or related information will be recorded in the log <br /> book. <br /> 3 0 Laboratory QA/QC Plan <br /> Soil and groundwater samples will be submitted to a State <br /> Certif,ed Hazardous Waste Laboratory for chemical analysis <br /> of hazardous constituents. Established QA/QC procedures for <br /> analytical operations will include sample custody <br /> procedures, standards of analytical accuracy, analysis of <br /> matrix spikes and method blanks, data reduction, <br /> verification of raw analytical data, and maintenance of <br /> control charts to monitor analytical performance. These <br /> QA/QC procedures are outlined in the laboratory QA/QC Plan <br /> which as available upon request. organic chemical analyses <br /> ' will be performed in conformance with standard procedures <br /> established by the United States Environmental Protection <br /> Agency (EPA) in "Guidelines Establishing Test Procedures for <br /> the Analysis of Pollutants Under the Clean Water Act" (40 <br /> CFR Part 136, October 1984 ) . The laboratory is <br /> periodically evaluated through external performance audits <br /> conducted by EPA and DHS using QC labs. The specii,c <br /> analytical methods to be utilizec, for purgeable and <br /> semivolatile hydrocarbons analyses are shown on Table 2. <br /> Provided the data base is of sufficient size, statistical <br /> techniques may be employed for data validation. <br /> .,s <br />