Quality Management & Operations Support Branch Quality Assurance Section Presented By: Webster Tasat Quality Assurance Section n Quality Control n Quality Assessment Quality Control n Internal tasks which are performed on a routine basis to control the accuracy and precision of a measurement process. Calibrations Zero and Span Checks Blanks Duplicates Quality Assessment n External tasks which are performed on an occasional basis to assess the capability and performance of a measurement process. Performance audits System audits Interlaboratory comparisons Performance Audits n A quantitative comparison of an air monitoring sites analyzers and/or samplers with a device of known accuracy. Performance audits may also involve a laboratorys ability to identify specific compounds. Gas Analyzer Audits Flow Audits MET Audits Laboratory Siting System Audits n An on-site inspection and review of facilities, equipment, training, procedures, recordkeeping, data validation, data management, and reporting aspects of an organizations monitoring program. Quality Assurance Audit Van Audit Van Interior Audit Gas Flow Gas Analyzer Audits n Analyzers O3, CO, NO2, SO2, H2S n Through-the-Probe (TTP) n Audit concentration levels (O3, NO2, SO2, H2S) High: ppm Mid: ppm Low: ppm CO Analyzer Flow Audits n Samplers TSP, Lead, Dichot, TEOM, PM10, PM2.5 n Transfer Standards Orifice, MFMs PM2.5 Sampler MET Audits n MET Sensors Temp., WD, WS, RH, BP, Solar Radiation n Audit Sensors NIST traceable Factory Certified Met Tower Laboratory Audits n Toxic Audits Sampler flow rates Sampler leak checks n NMHC Audits n Whole Air Comparison Check n Laboratory Analysis NMHC Set-Up Additional QA Activities n Report on Quality Control/Quality Assessment Data n Oversee Data Control n Research/Develop New Audit Equipment and Procedures