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Quality Assurance/Quality Control <br /> ' assurance/quality control (QA/QC) measures will be taken to confirm the <br /> Quality assurancelq ty ( } <br /> 1 integrity of the field and laboratory data generated during the monitoring program <br /> The procedures used to assess data quality are described in this section An <br /> evaluation of the field and laboratory quality assurance data will be included in the <br /> technical reports <br /> Field Quality Assurance Procedures <br /> ' Field quality assurance procedures will be included in each monitoring event and <br /> include documenting field instrument calibration, and collecting and analyzing trip <br /> blanks, field blanks, and duplicate samples <br /> Trip and field blanks. Tnp and field blanks will be used during the sampling <br /> ' events to detect contamination introduced through sampling procedures, external <br /> field conditions, sample transportation, container preparation, sample storage, and <br /> the analytical process <br /> ' Tnp blanks will be prepared at the same time and location as the sample <br /> containers for a particular sampling event Trip blanks will accompany these <br /> containers to and from that event, but at no time opened or exposed to the <br /> atmosphere One trip blank for volatile organic parameters will typically be <br /> included for each sampling event <br /> Field blanks will be prepared in the same manner as trip blanks but will be <br /> exposed to the ambient atmosphere at a specified monitoring point during sample <br /> ' collection to determine the influence of the extemal field conditions on sample <br /> integrity One field blank for volatile organic parameters will typically be included <br /> for each day of sampling <br /> Duplicate samples. Duplicate samples will be collected to document field <br /> precision For each sampling event, duplicate soil samples will be collected at a <br /> ' specified frequency, typically 5 percent Where possible, field duplicates will be <br /> taken at sampling points known or suspected to contain constituents of interest <br /> Duplicates will be packed and shipped "blind" to the laboratory for analysis with the <br /> ' samples from that particular event (i e , these samples will not exhibit any special <br /> markings indicating that they are quality control samples) <br /> 1 C-13 <br />