Wisconsin FDMS FDMSTEOM Network Review Analysis

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• Wisconsin FDMS - FDMS-TEOM Network Review
  Analysis
• EPA Region 5 Contacts Meeting
• March 7, 2007
• Steve Schuenemann Bart Sponseller

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Wisconsin FDMS-TEOM Network Review Analysis

• Purpose
• Analyze available FDMS-TEOM information to
  support QMP and/or SOP revision
• Goal
• FDMS-TEOM network that provides
• accurate reliable continuous PM measurements as
  a basis for Air Quality forecasting
• data comparable to FRM gravimetric method
• continuous PM measurements that are comparable
  statewide, regionally and nationally
• Reasons for the 2006 FDMS-TEOM Network Review
• Network inconsistency
• Certain monitors tracked closely to the FRM
  method, while others were 70 to 90 high or low
• Noticed individuality of monitors exhibited
  unique behavioral characteristics
• Changes in configuration of all monitors over
  time resulted in poor intersite comparability
• Regional Equivalency
• Air quality watches/advisories based on reported
  FDMS-TEOM measurements

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Data Comparison Approaches

• Approaches
• Compare FDMS-TEOM to FRM
• Compare FDMS-TEOM to FDMS-TEOM multi-site
• Consider age of transducers other components
• Consider operator hands-on or leave it be
• Consider location
• Urban vs Rural
• Near Lake Michigan vs Inland
• Track major equipment changes e.g. dryer
  replacement

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FDMS-TEOM Tracking
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FDMS-TEOM/FRM Comparison
Rural Location in SW Wisconsin
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FDMS-TEOM/FRM Comparison
Urban/Industrial Location 17 miles west of
Lake Michigan
Urban/Highway Location near Lake Michigan
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FDMS-TEOM/FRM Comparison
Rural Location Lake Michigan shoreline
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FDMS-TEOM/FRM Comparison
Rural Northwestern WI national forest
Rural Lake Michigan shoreline
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FDMS-TEOM Comparison
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FDMS-TEOM FRM Comparison
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FDMS B Dryer Installations
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Conclusions

• Dryer reconditioning/replacement is critical.
• High FDMS-TEOM values at Waukesha, FAA
  Manitowoc were likely high due to moisture
• Noticed potential failing dryers at other sites
• Results of analysis have guided FDMS-TEOM SOP
  development
• SOP will require annual preventive maintenance
  schedule each spring prior to O3 season.

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Questions?

• Why are FDMS-TEOM values now consistently lower
  than FRM at FAA SER/HQ?
• Would operating a FDMS-TEOM with a failed dryer
  have an impact on other components? Would it
  cause excess wear deterioration of other parts
  such as sensors or valves?
• What do high - volatile channel values tell
  us?