Laserfiche WebLink
Test Methods for Evaluating Solid Wastes Physical/Chemical Methods, EPA <br /> SW-846, 3rd edition, November 1986 <br /> • Leaking Underground Fuel Tank (LUFT) Manual, State Water Resources Control <br /> Board, State of California Leaking Underground Fuel Tank Task Force, revised <br /> October 1989 <br /> The laboratories selected to perform the analytical work are certified by the Department <br /> of Health Services (DHS) for hazardous waste testing <br /> Quality Assurance/Quality Control <br /> Quality assurance/quality control (QA/QC) measures were taken to confirm the integrity <br /> of the field and laboratory data generated during the monitoring program The procedures <br /> used to assess data quality are described in this section An evaluation of the field and <br /> laboratory quality assurance data will be included in the technical reports <br /> Field Quality Assurance Procedures <br /> Field quality assurance procedures were included in each monitoring event and included <br /> documenting field instrument calibration, and collecting and analyzing trip blanks, field <br /> blanks, and duplicate samples Split samples may also have been included in the <br /> monitoring program <br /> Trip and field blanks Trip and field blanks were used during the sampling events to <br /> detect contamination introduced through sampling procedures, external field conditions, <br /> sample transportation, container preparation, sample storage, and the analytical process <br /> Trip blanks were prepared at the same time and location as the sample containers for a <br /> particular sampling event Trip blanks accompanied these containers to and from that <br /> event, but at no time were opened or exposed to the atmosphere One trip blank for <br /> volatile organic parameters was typically included for each sampling event <br /> Field blanks were prepared in the same manner as trip blanks but were exposed to the <br /> ambient atmosphere at a specified monitoring point during sample collection to determine <br /> the influence of the external field conditions on sample integrity One field blank for <br /> volatile organic parameters was typically included for each day of sampling <br /> Duplicate samples Duplicate samples were collected to document field precision For <br /> each sampling event, duplicate monitoring well samples were collected at a specified <br /> frequency, typically 5 percent Where possible, field duplicates were taken at sampling <br /> points known or suspected to contain constituents of interest Duplicates were packed and <br /> shipped "blind" to the laboratory for analysis with the samples from that particular event <br /> (i e , these samples did not exhibit any special markings indicating that they were quality <br /> control samples) <br /> SAC/pj2\2520\25201000 las-94 pas A-7 Rev 0 0727/94 <br />