Document Archives Reports

Denver/North Front Range Local Source 2017 Source Apportionment Modeling Using a 2011 Modeling Database

Posted Under: Modeling

Denver/North Front Range Local Source 2017 Source Apportionment Modeling Using a 2011 Modeling Database

Prepared by: Ramboll Environ and Alpine Geophysics, April 2017

Review: Low-VOC Consumer Products and AIM Coatings

Posted Under: Ozone (8-Hour Standard)

Review: Low-VOC Consumer Products and AIM Coatings

Prepared by: Regional Air Quality Council, June 30, 2016

Review: Non Gasoline Powered Commercial Lawn and Garden Equipment

Posted Under: Ozone (8-Hour Standard)

Review: Non Gasoline Powered Commercial Lawn and Garden Equipment

Prepared by: Regional Air Quality Council, June 30, 2016

Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

Posted Under: Ozone (8-Hour Standard), SIP

 

  • Final Revisions to Regulations adopted as part of the SIP

    • Regulation No. 7 – Control of Ozone via Ozone Precursors and Control of Hydrocarbons via Oil and Gas Emissions (coming soon)
    • Air Quality Standards, Designations and Emission Budgets (coming soon)
    • Motor Vehicle Emissions Budgets (MVEB) (coming soon)
  • Technical Support Documents (TSD)

Technical Support Documents for the Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

Posted Under: Ozone (8-Hour Standard), SIP

Technical Support Documents Supporting the Denver Metro/North Front Range Moderate Area 2008 8-Hour Ozone Standard State Implementation Plan

Emissions Inventory Development

Photochemical Grid Modeling

Weight of Evidence (WOE) Analyses

Other

 

Subcommittee Reports

Posted Under: Stakeholder Meetings

 

Low – VOC Consumer Products and Architectural and Industrial Maintenance (AIM) Coatings – Literature Review (June 30, 2016)

Prepared by:  Theresa Takushi for The Regional Air Quality Council

Commercial Lawn and Garden Equipment – Literature Review (June 30, 2016)

Prepared by:  The Regional Air Quality Council

 

4th Maximum Ozone Values Table (ppb) through September 30th, 2016

Posted Under: News Room - News, Ozone (8-Hour Standard)

Click here to view current table

The Denver Metro/North Front Range area is designated as nonattainment by the U.S. Environmental Protection Agency (EPA) for the pollutant ozone. The 2008 8-Hour Ozone Standard is 75 parts per billion (ppb) and is calculated using a rolling three-year average of the fourth (4th) highest daily 8-hour ozone concentration.

The table linked above shows current monitoring data for the nonattainment area, including the top four (4) values for each monitoring site for the current ozone season as well as the 4th highest values for the previous two years. The 4th highest values over a three-year period are averaged to determine the Design Value (DV) at each monitor. The highest DV is the test of attainment, with all monitors having to be at or below the standard.

The RAQC’s ozone education campaign, OzoneAware, issues Ozone Action Alerts as well as notices about upcoming community events. The public is encouraged to participate in efforts to reduce air pollution by joining the Clean Air Community and using the OzoMeter to track air quality impacts.

For additional information on ground-level ozone, please visit ozoneaware.org or call (303) 629-5450, ext. 220.

Click here to view previous tables

Preliminary Ozone Model Evaluation for the Denver 2011 4 KM Base Case (November 2015)

Posted Under: Modeling, Modeling & Emissions Inventories, Ozone (8-Hour Standard)

Preliminary Ozone Model Evaluation for the Denver 2011 4 KM Base Case (November 2015)

Prepared by: Ramboll Environ and Alpine Geophysics, November 2015

2008 Moderate Area SIP: 2011 and 2017 Base Case Emissions Inventory Briefing Paper (October 2015)

Posted Under: Modeling, Modeling & Emissions Inventories, Ozone (8-Hour Standard)

2008 Moderate Area SIP: 2011 and 2017 Base Case Emissions Inventory Briefing Paper (October 2015)

Prepared by:  Amanda Brimmer, RAQC (October 2015)

Attainment Demonstration Modeling for the Denver Metro/North Front Range 2017 8-Hour Ozone State Implementation Plan (SIP) – Draft Modeling Protocol

Posted Under: Modeling, News Room - News

 

The RAQC is in the process of conducting modeling needed to demonstrate attainment of the current March 2008 ozone National Ambient Air Quality Standard (NAAQS) in Denver Metro/North Front Range region by 2017.  This Modeling Protocol guides the technical details of a modeling study and provides a formal framework within which the scientific assumptions, operational details, commitments and expectations of the various participants can be set forth explicitly and means for resolution of potential differences of technical and policy opinion can be worked out openly and within prescribed time and budget constraints.  Current modeling is being carried out by a contracting team consisting of Ramboll Environ US Corporation and Alpine Geophysics, LLC under contract to the Regional Air Quality Council (RAQC).

Click here to access.

1 2 3 5