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Clark County PM 10 Saturation Study

Clark County PM 10 Saturation Study. Robert A. Baxter, CCM T & B Systems, Inc. Background. Clark County is in non-attainment for the 24-hour PM 10 NAAQS 2001 SIP made a commitment to conduct a PM 10 saturation study Study to begin in 2004 and be completed in 2006.

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Clark County PM 10 Saturation Study

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  1. Clark County PM10Saturation Study Robert A. Baxter, CCM T & B Systems, Inc.

  2. Background • Clark County is in non-attainment for the 24-hour PM10 NAAQS • 2001 SIP made a commitment to conduct a PM10 saturation study • Study to begin in 2004 and be completed in 2006

  3. Study Goals and Objectives • Determine neighborhood impacts of major sources • Determine PM concentrations in locations that may not be covered by the current monitoring network • Determine inter-basin and intra-basin transport during high wind events

  4. Study Design • Evaluate existing data sets for apparent trends • Design the monitoring network • Sampler evaluation (fall 2004) • Acquire appropriate saturation sites • Saturation study (April 15 – June 30) • Evaluate the collected data

  5. PM10 Data EvaluationYears 2000 – 2003

  6. PM10 Data EvaluationYears 2000 – 2003

  7. PM10 Data EvaluationYears 2000 – 2003

  8. DAQEM PM10 Site Locations

  9. PM10 Site Locations

  10. DAQEM PM10 Site Locations

  11. PM10 Site Locations

  12. PM10 Instrument Evaluation • Two evaluation sites • Crustal PM10 • Combustion emissions related PM10 • Evaluation Criteria • Continuous Method • Acceptable performance • No environmental controls • Solar power • Inconspicuous • Cost-effective • Reliable

  13. PM10 Instrument EvaluationOctober/November 2004

  14. PM10 Instrument EvaluationOctober/November 2004

  15. Selected Instrumentation • TSI DustTrak • External data logging • Extended sample inlet • Solar/available power

  16. Instrument Siting

  17. Instrument Siting

  18. Saturation Sampling Schedule • Study Period = April 15 – June 30 • Continuous sampling for study duration • QA program for network assessment and performance • Weekly data downloads and QC checks

  19. What Have We Seen? • Fall and winter rainy periods • Late spring/early summer high wind events • Wind events produced short lived PM10 “episodes” • No PM10 exceedances in the Las Vegas Valley network • Desert environment is rough on instrumentation

  20. Questions? Please contact: Department of Air Quality and Environmental Management (DAQEM) (702) 455-5942

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