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• Analytical Methods Samples collected as part of the monitoring program were analyzed consistent with accepted analytical procedures. The following publications were the primary references for analytical procedures: Methods fnr Chemical Analysis of Water and Wastes, EPA-600/4-79-020. revised March 1983 Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, EPA-600/4-82-057,July 1982 Test Methods for Evaluating Solid Wastes: PhysicallChemical Merhods, EPA SW-846, 3rd edition, November 1986 Leaking Underground Fuel Tank Manual, State Water Resources Control Board, State of California Leaking Underground Fuel Tank Task Force, revised October 1989 • The laboratories selected to perform the analytical work are certified by the Department of Health Services (DHS) for hazardous waste testing. QUALITY ASSURANCE/QUALITY CONTROL Quality assurance/quality control (QA/QC) measures were taken to confinrl the integrity of the field and laboratory data generated during the monitoring progran-L The procedures used to assess data quality are described in this section. An evaluation of the field and laboratory quality assurance data will be included in the technical reports. Field Quality Assurance Procedures Field quality assurance procedures were included in each monitoring event and included documenting field instrument calibration, and collecting and analyzing trip blanks, field blanks, and duplicate samples. Split samples may also have been included in the monitoring program. Trip and Field Blanks. Trip and field blanks were used during the sampling events to detect contamination introduced through sampling procedures, external field conditions, sample transportation,container preparation, sample storage, and the analytical process. sAC\N-M'1ZI-1520\25201000.1PS-9a\pas:1 A-8 Rev.0,4111195 J