Quality Management & Operations Support Branch Quality Assurance Section

Quality Management & Operations Quality Management & Operations Support BranchSupport Branch

Quality Assurance Section Quality Assurance Section Presented By: Webster TasatPresented By: Webster Tasat

Quality Assurance SectionQuality Assurance Section

Quality Control Quality Control

Quality AssessmentQuality Assessment

Quality ControlQuality Control

InternalInternal tasks which are performed on a tasks which are performed on a routine basis to control the accuracy routine basis to control the accuracy and precision of a measurement and precision of a measurement process.process.– CalibrationsCalibrations– Zero and Span ChecksZero and Span Checks– BlanksBlanks– DuplicatesDuplicates

Quality AssessmentQuality Assessment

External External tasks which are performed on tasks which are performed on an occasional basis to assess the an occasional basis to assess the capability and performance of a capability and performance of a measurement process.measurement process.– Performance auditsPerformance audits– System auditsSystem audits– Interlaboratory comparisonsInterlaboratory comparisons

Performance AuditsPerformance Audits A quantitative comparison of an air monitoring A quantitative comparison of an air monitoring

site’s analyzers and/or samplers with a device site’s analyzers and/or samplers with a device of known accuracy. Performance audits may of known accuracy. Performance audits may also involve a laboratory’s ability to identify also involve a laboratory’s ability to identify specific compounds.specific compounds.– Gas Analyzer AuditsGas Analyzer Audits– Flow AuditsFlow Audits– MET AuditsMET Audits– LaboratoryLaboratory– SitingSiting

System AuditsSystem Audits An on-site inspection and review of An on-site inspection and review of

facilities, equipment, training, facilities, equipment, training, procedures, recordkeeping, data procedures, recordkeeping, data validation, data management, and validation, data management, and reporting aspects of an organization’s reporting aspects of an organization’s monitoring program.monitoring program.

Quality Assurance Audit Quality Assurance Audit VanVan

Audit Van InteriorAudit Van Interior

Audit Gas FlowAudit Gas Flow

Gas Analyzer Audits Gas Analyzer Audits Analyzers Analyzers

– O3, CO, NO2, SO2, H2SO3, CO, NO2, SO2, H2S Through-the-Probe (TTP)Through-the-Probe (TTP) Audit concentration levels (O3, NO2, Audit concentration levels (O3, NO2,

SO2, H2S)SO2, H2S)– High:High: 0.35 - 0.45 ppm 0.35 - 0.45 ppm – Mid:Mid: 0.15 - 0.20 ppm 0.15 - 0.20 ppm – Low:Low: 0.03 - 0.08 ppm0.03 - 0.08 ppm

CO AnalyzerCO Analyzer

Flow AuditsFlow Audits SamplersSamplers

– TSP, Lead, Dichot, TEOM, PM10, TSP, Lead, Dichot, TEOM, PM10, PM2.5PM2.5

Transfer StandardsTransfer Standards– Orifice, MFMsOrifice, MFMs

PM2.5 SamplerPM2.5 Sampler

MET AuditsMET Audits MET SensorsMET Sensors

– Temp., WD, WS, RH, BP, Solar Temp., WD, WS, RH, BP, Solar RadiationRadiation

Audit SensorsAudit Sensors– NIST traceableNIST traceable– Factory Certified Factory Certified

Met TowerMet Tower

Laboratory AuditsLaboratory Audits Toxic AuditsToxic Audits

– Sampler flow ratesSampler flow rates– Sampler leak checksSampler leak checks

NMHC AuditsNMHC Audits Whole Air Comparison CheckWhole Air Comparison Check Laboratory AnalysisLaboratory Analysis

NMHC Set-Up NMHC Set-Up

Additional QA ActivitiesAdditional QA Activities Report on Quality Control/Quality Report on Quality Control/Quality

Assessment DataAssessment Data

Oversee Data ControlOversee Data Control

Research/Develop New Audit Research/Develop New Audit Equipment and ProceduresEquipment and Procedures