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NPDES Inspections and The Laboratory

NPDES Inspections and The Laboratory. Chris Veldkamp Senior EQA-Water Bureau Grand Rapids District Office. Laboratory elements that may be evaluated when we conduct an inspection. Sampling Test methods and analyses Laboratory equipment Records Quality Assurance/Quality Control.

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NPDES Inspections and The Laboratory

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  1. NPDES Inspections and The Laboratory Chris Veldkamp Senior EQA-Water Bureau Grand Rapids District Office

  2. Laboratory elements that may be evaluated when we conduct an inspection Sampling Test methods and analyses Laboratory equipment Records Quality Assurance/Quality Control

  3. Components of a Laboratory Inspection Sampling • Representative • Techniques • Proper equipment • Preservation

  4. Components of a Laboratory Inspection Test methods & analyses • CFR 40 Part 136 • Water/Wastewater Analyses • Quantification Levels • Alternate Test Methods Correctly Carefully Consistently Proper Procedures

  5. Components of a Laboratory Inspection Laboratory Equipment • Operating temperatures • Calibration • Slopes • Maintenance

  6. Components of a Laboratory Inspection Records 1) The exact place, date, and time of measurement or sampling 2) The person(s) who performed the measurement or sample collection 3) The dates the analyses were performed 4) The person(s) who performed the analyses 5) The analytical techniques or methods used 6) The date of and person responsible for equipment calibration 7) The results of all required analyses

  7. Components of a Laboratory Inspection Quality Assurance/Quality Control • Written procedures • Reliable data • Results generated • Control charts

  8. Common Lab Problems • Test method not approved • Quantification levels are too high • Improper preservation • Improper calculations (e.g. averages, geometric mean) • Inadequate records • Transcription problems with reported data

  9. Helpful Hints • Have a copy of the permit • For required test methods • For required quantification levels • For info on recordkeeping • Ensure the laboratory has the necessary references (Standard Methods, DEQ Lab Manual, CFR 40 Part 136)

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