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National Air Quality Conference Continuous PM2.5 Monitoring Issues BAM-1020 P ractical Advice for Best Performance

National Air Quality Conference Continuous PM2.5 Monitoring Issues BAM-1020 P ractical Advice for Best Performance . California Air Resources Board Mac McDougall. Beta Attenuation Mass Monitor. PMT C14 source nozzle/vane filter tape tape transport smart heater met translator actual flow

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National Air Quality Conference Continuous PM2.5 Monitoring Issues BAM-1020 P ractical Advice for Best Performance

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  1. National Air Quality ConferenceContinuous PM2.5 Monitoring IssuesBAM-1020 Practical Advice for Best Performance California Air Resources Board Mac McDougall

  2. Beta Attenuation Mass Monitor PMT C14 source nozzle/vane filter tape tape transport smart heater met translator actual flow GAST pump SSI

  3. Basics - Sampling/Monitoring • Purpose/Interest • You get out what you put in • Principle of Operation - understanding • Expectations - specifications • ATP/SOP – document & follow through • Quality Assurance & maintenance • Evaluation - troubleshooting • Data validation – remove bad data • Responsible final review

  4. BAM-1020 Network Development • How equipment works – Investigate • Bench test criteria – Develop (i.e. zero test) • Write Acceptance Test Procedure (ATP) • Bench test every monitor (no exceptions) • Write Standard Operating Procedure (SOP) • Rigid field install/config./evaluation • BAM-1020 data review/validation

  5. FRM & Continuous Placement • Collocate • Height

  6. Grounding • tube to inlet • inlet to case • case to ground

  7. Inlets • ID fit • o-rings • clean

  8. Filter Tape Hole Punching • inspect w/ each visit • inspect w/ tape change • clean nozzle/vane

  9. BAM-1020 Pump • Medo pump • quiet • easy rebuild • GAST pump • less expensive • not much louder • improved flow (loading) • improved leak check • longer life • Better flow @ altitudes

  10. Zero Test and Criteria • HEPA filter kit (0.2 um) • Background set to 0.000 • BAM-1020 warm up • Leak check & calibrate • Remove first 4 hours • Consecutive 72 valid hours • Max/Min </= 14 ug/m3 • No value exceed 20 ug/m3 • No -5 ug/m3 values • Any errors, rerun test • Field test when first installed • *Field test every 12 or 24 months

  11. Zero Test ResultsMax = 6ug/m3 Min = -3 ug/m3 Average/Bkgd = 0

  12. Data Validation • Download BAM-1020 Data • 900 values (915/995 ug/m3) • Qtot (0.830-0.837 m3) • Error codes (understand & evaluate) • Error log • Configuration file changes • External data logger offset • Invalidate • Responsible data review • *Overall concentration pattern

  13. Typical BAM-1020 Data • 01/01/08 01:00, 0.041, 0.833, 0.9, 74.9, 23.3, 148, 29.0, 3.2, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 02:00, 0.038, 0.833, 1.6, 36.7, 23.3, 148, 29.0, 3.2, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 03:00, 0.043, 0.833, 0.6, 215.2, 23.4, 146, 29.0, 2.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 04:00, 0.036, 0.833, 1.3, 7.7, 23.4, 145, 28.9, 2.3, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 05:00, 0.047, 0.833, 2.9, 2.9, 23.3, 147, 29.0, 3.1, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 06:00, 0.026, 0.834, 2.0, 237.1, 23.2, 147, 29.0, 3.2, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 07:00, 0.025, 0.833, 1.5, 201.8, 23.4, 146, 29.0, 2.4, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 08:00, 0.026, 0.834, 2.1, 207.9, 23.4, 143, 28.9, 1.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 09:00, 0.011, 0.834, 4.6, 231.0, 23.5, 150, 29.0, 3.5, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 10:00, 0.021, 0.833, 4.4, 231.9, 23.5, 153, 29.1, 5.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 11:00, 0.018, 0.834, 4.6, 210.8, 23.5, 148, 29.1, 7.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 12:00, 0.010, 0.833, 4.6, 215.8, 23.5, 147, 29.2, 9.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 13:00, 0.010, 0.834, 5.8, 233.4, 23.4, 146, 29.3, 11.1, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 14:00, 0.007, 0.834, 5.1, 232.1, 23.3, 144, 29.3, 12.1, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 15:00, 0.005, 0.834, 4.3, 236.5, 23.1, 145, 29.3, 12.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 16:00, 0.006, 0.834, 3.8, 235.8, 23.0, 145, 29.3, 11.9, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 17:00, 0.008, 0.833, 3.5, 239.3, 22.9, 147, 29.3, 10.9, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 18:00, 0.012, 0.834, 3.1, 236.9, 22.9, 150, 29.2, 9.9, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 19:00, 0.016, 0.834, 2.3, 225.3, 22.9, 149, 29.2, 9.3, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 20:00, 0.009, 0.834, 2.3, 227.3, 23.0, 148, 29.2, 8.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 21:00, 0.015, 0.834, 1.9, 216.7, 23.0, 147, 29.1, 7.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 22:00, 0.012, 0.834, 2.4, 7.3, 23.1, 146, 29.1, 7.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/01/08 23:00, 0.009, 0.833, 2.1, 44.2, 23.2, 147, 29.1, 6.4, 0,0,0,0,0,0,0,0,0,0,0,0,

  14. Quality Control • Flow check • 16.7 LPM +/- 4% • Leak check • Met One </= 1.00 LPM • CARB <1.00 LPM • Ideal </= 0.4 LPM • If either check fails, invalidate data

  15. BAM-1020 Data With Code • 01/11/08 11:00, 0.023, 0.833, 5.0, 190.1, 22.3, 173, 29.2, 9.8, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 12:00, 0.015, 0.834, 4.5, 198.7, 22.3, 171, 29.2, 10.0, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 13:00, 0.017, 0.834, 4.2, 225.7, 22.3, 169, 29.3, 10.4, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 14:00, 0.010, 0.834, 3.9, 209.7, 22.3, 168, 29.3, 10.9, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 15:00, 0.995, 0.000, 4.6, 198.5, 22.4, 167, 29.3, 11.0, 0,0,1,0,0,0,0,0,0,0,0,0, • 01/11/08 16:00, 0.006, 0.836, 4.2, 202.2, 22.3, 164, 29.3, 11.2, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 17:00, 0.005, 0.834, 4.3, 204.2, 22.3, 168, 29.3, 10.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 18:00, 0.005, 0.834, 4.0, 205.3, 22.2, 166, 29.3, 10.4, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 19:00, 0.005, 0.834, 4.2, 208.8, 22.2, 167, 29.2, 10.1, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 20:00, 0.004, 0.834, 3.7, 219.6, 22.3, 167, 29.2, 9.9, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 21:00, 0.003, 0.833, 4.2, 206.8, 22.3, 168, 29.2, 9.7, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 22:00, 0.005, 0.834, 2.9, 200.2, 22.3, 169, 29.2, 9.6, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/11/08 23:00, 0.006, 0.833, 2.4, 175.8, 22.3, 168, 29.2, 9.5, 0,0,0,0,0,0,0,0,0,0,0,0, • 01/12/08 00:00, 0.009, 0.834, 2.6, 131.6, 22.3, 169, 29.2, 9.3, 0,0,0,0,0,0,0,0,0,0,0,0,

  16. Things To Do • Is your BAM-1020 up to date (all upgrades) • Talk directly to Met One • Develop an ATP w/ criteria • Develop SOP w/ QC • Site/install appropriately • Evaluate network • Troubleshoot and remedy • Validate and review

  17. Current Network – What Next • Maintain current BAM-1020 network • BAM-1020 mainly used for: • PM-AQI • Ag-Burn Forecasting • Special studies • Evaluate FEM BAM-1020 Monitor • Potential FEM BAM-1020 network upgrade

  18. Time Series (24 Hour Averages)

  19. Data Integrity THE PRICE OF QUALITY DATA IS CONSTANT VIGILANCE

  20. Contact Information • Mac McDougall • 916-327-4720 • emcdouga@arb.ca.gov

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