2010 and older
Denver/NFR Air Quality Modeling to Support Ozone SIP Development, August 16, 2010 – Presentation to RAQC members developed by Environ-Alpine to provide modeling background and give an update.
DRAFT Ozone SIP Modeling Scope of Work — 2010-2012, May 10, 2010 – RAQC/APCD staff SOW and schedule for planning to address Phase II modeling improvements, new MOVES model work, and base and future year SIP modeling.
Air Quality Modeling Overview and Preliminary Ozone SIP Modeling Results, May 7, 2010 – Presentation to RAQC Board developed by RAQC/APCD staff summarizing post 2008 SIP work through July 29, 2009 modeling meeting presentation and work since then.
Denver 2020 Emission Reduction Sensitivity Tests and Effects of CAMxVV, March 23, 2010 – presentation prepared by Environ-Alpine. Modeled additional sensitivity tests and modeled the original 2020 projected emissions (used in work presented July 29, 2009) with the CAMxVV to separate the benefit of CAMxVV from the NOx reductions.
2020 Ozone Projections for Three Emissions Sensivity Test Address Vertical Transport, February 10, 2010 – presentation prepared by Environ-Alpine. Maximum available controls on large NOx Sources were tested in the scenarios.
Revised Denver 2020 Ozone Projections Using CAMx with Updated Vertical Transport Algorithms, January 26, 2010 – presentation prepared by Environ-Alpine – This analysis also included revisions (more reasonable estimates) to large NOx sources and corrected refueling estimate as suggested at July 29, 2009 modeling meeting. Improvement in ozone noted in response to reductions and Vertical Velocity algorithm improvement.
Revised Denver June-July 2006 CAMx Base Case Modeling and Model Evaluation to Address Vertical Transport, December 16, 2009 – presentation prepared by Environ-Alpine. Phase I 2015-2020 Point Source Modeling Inventories, October 12, 2009 – In response to comments raised at July 29, 2009 modeling meeting concerning growth factors for point sources used for 2015/2020, updated Phase I point source inventory data was posted, with the invitation to sources to review and comment on the growth assumed for their facility or industry. The updated inventory and Division staff’s response to comments received resulted in significant reductions in the estimated future emissions of large NOx sources (primarily Electric Generating Units) presented here. Related downloads: 2015-2020 Colorado Phase I Inventory – All Points – revised 11/09 2015-2020 Colorado Phase I Inventory – NO2- revised 11/09 2015-2020 Colorado Phase I Inventory – VOC CAMx Vertical Transport Over Complex Terrain, August 25, 2009 – In August 2008 while developing the scope of work for Phase II Model Improvements, Environ presented the findings to RAQC/APCD modeling staff of their work on Vertical Velocity Transport (VVT) issues for others. VVT improvement was integrated into remaining Phase I tasks.
Denver 2015 and 2020 Ozone Modeling, July 29, 2009 – Presentation by Ralph Morris, Environ International Corporation Next Round of Phase I Sensitivity Analyses, July 29, 2009 – Presentation by Ken Lloyd, Regional Air Quality Council Draft Final Report 2015 and 2020 Ozone Projections for the Denver Area, July 15, 2009 – Prepared by Environ-Alpine.
Draft Final Report 2020 Ozone Source Apportionment Modeling for the Denver Area, July 15, 2009 – Prepared by Environ-Alpine Appendix A (From 2020 Ozone Source Apportionment Modeling report) *warning, this is a very large file Appendix B (From 2020 Ozone Source Apportionment Modeling report) *warning, this is a very large file 2009 Improve Model Performance Local Government Coalition, February 2009 – Presentation prepared by Gregg Thomas, Denver Dept. of Environmental Health Projections for the Denver Region and Proposed Improvements to the Denver Photochemical Modeling Databases, January 15, 2009 – prepared by ENVIRON International Denver 2010 Control Strategies Report, September 22, 2008 – prepared by Environ-Alpine.
Denver 2010 Projections, Emissions Sensitivity and APCA Ozone Source Apportionment Report, Executive Summary, August 2008 – prepared by Environ-Alpine Denver Metro Area & North Front Range 8-Hour Ozone State Implementation Plan (SIP) Technical Support Documents (TSD) in support of the SIP, approved by the Air Quality Control Commission, December 17, 2008 The TSD is comprised of nine (9) Appendices covering Modeling Protocol, MM5 Simulation, Emissions Inventories, Model Performance Evaluation, 2010 Base Case Projections, Sensitivity Testing and Source Apportionment Analysis, 2010 Attainment Demonstration, Weight of Evidence, Ambient Data and Final 2010 Attainment Demonstration Modeling. The TSD can be found at the CDPHE, APCD website is available here. Early Action Compact for Ozone Technical Support Documents (TSD), approved by AQCC December 17, 2008 available here