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Attribution of Haze Project Report. Technical Oversight Committee January 27, 2004 Tempe, AZ. 2004 Attribution of Haze Project. Definitions Conceptual Model Membership/Meetings Data Sources Deliverables/Contractor Support Schedule. Definitions.

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attribution of haze project report

Attribution of Haze Project Report

Technical Oversight Committee

January 27, 2004

Tempe, AZ

2004 attribution of haze project
2004 Attribution of Haze Project
  • Definitions
  • Conceptual Model
  • Membership/Meetings
  • Data Sources
  • Deliverables/Contractor Support
  • Schedule
  • As they apply to emissions sources for WRAP technical analysis projects (from Webster’s):
    • Apportionment – to divide and share out according to a plan, to make a proportionate division or distribution
    • Attribution – to explain by indicating a cause
conceptual model
Conceptual Model



Attribution of Haze Project


Receptor Modeling &

Trajectory Analyses



Model Analyses


2002 EIs

Pure, Idle Speculation

2004 aoh project membership meetings
2004 AoH Project Membership/Meetings
  • Membership
    • Entire TOC
    • 1 representative from each technical and joint forum or workgroup, and the IOC
    • 3 state and 3 tribal representatives designated by state and tribal caucuses
  • Meetings
    • Open meeting/conference call format
    • E-Mail distribution list
    • Data analysis presentation and discussion
    • Schedule later in presentation
2004 aoh project data sources
2004 AoH Project Data Sources
  • Source apportionment modeling simulations from the Regional Modeling Center
  • Receptor-oriented source contribution analyses of aerosol and meteorological monitoring data from the Causes of Haze Assessment project
  • Existing and refined emissions inventories from the Dust, Emissions, and Fire Forums
  • Special-purpose source attribution studies such as BRAVO, et cetera
  • EPA technical guidance documents and analyses
  • Journal publications, and workshop/conference reports addressing emissions and visibility impairment
2004 aoh project deliverables
2004 AoH Project Deliverables
  • Identify:
    • Geographic source areas of emissions that contribute to impairment at each mandatory federal and tribal Class I area
    • Mass and species distributions of emissions by source categories within each contributing geographic source area
    • The amount of natural and manmade emissions affecting each Class I area
2004 aoh project deliverables1
2004 AoH Project Deliverables
  • Provide:
    • Documentation of the assumptions, methods, and uncertainties used in the integrated analyses of modeling, monitoring, and emissions data.
    • Succinct, clear summaries for policymakers, of the estimated areas and sources of impairment for each Class I area, including the associated uncertainty
2004 aoh project contractor support
2004 AoH Project Contractor Support
  • Contractor to:
    • Support coordination of the collection, compilation, review, and formatting of data described earlier
    • Subcontract with external expert reviewers to provide reports/presentations on specific analysis topics
    • Support in-person and conference call meetings of the AoH workgroup
    • Prepare draft and final AoH report
  • January – March
    • Organizational meetings – phone/in-person
    • Develop scope of work for contractor support + hire
  • April – June
    • Review/discuss existing source attribution studies (BRAVO, et cetera)
    • Contractor to identify data available for AoH project
  • July – September
    • Review/discuss work products from RMC, CoHA, and EIs
    • Assign expert review topics
  • October – December
    • Continue review/discussion of work products from RMC, CoHA, and EIs
    • Review/discuss draft reports from expert reviewers
    • Review first draft of AoH report prepared by contractor
  • January 2005
    • Publish final 2004 AoH report
    • Make plan for subsequent workgroup activities