| Title | Date |
|---|
| Letter to U.S. EPA on framework for streamlining the State Review Framework | May 15, 2013 |
| Letter to U.S. EPA on draft FY14 NPM Guidance | May 9, 2013 |
| Letter to U.S. EPA on Quality Standard | March 27, 2013 |
| Letter to Appropriations Committee on FY13 Rescissions | March 13, 2013 |
| Letter to U.S. EPA on Title VI Extension Request | February 27, 2013 |
| Letter to Senator Thune on E-Manifest Bill | September 19, 2013 |
| U.S. EPA Response to Comments on Draft Round 3 SRF Documents | July 3, 2012 |
| Letter to Senate on States Support Efforts to Reduce Mercury Emissions | June 15, 2012 |
| Letter to Ranking Member Cochran on FY13 FUDS Budget Request | June 13, 2012 |
| Letter to EPA on Draft SRF Round 3 Guidance Documents | May 25, 2012 |
| Letter to Chairman Inouye on FY13 FUDS Budget Request | May 21, 2012 |
| Letter to DOE on Mercury Storage | May 8, 2012 |
| Letter to Jim Jones on Pollution Prevention Resource Exchange | April 12, 2012 |
| U.S. EPA Response to ECOS Letter on Coal Ash NOI to Sue | April 6, 2012 |
| Letter to U.S. EPA Administrator on Coal Ash NOI to Sue | March 2, 2012 |
| Letter to OMB on Urging Strong FY2013 Budget for DOE | January 19, 2012 |
| Letter to DOE on Urging Strong FY2013 Budget | January 19, 2012 |
| Letter to DOE on Urging Strong FY2013 Budget | January 19, 2012 |
| Letter to OCFO on Grant Award Timeliness | January 13, 2012 |
| Letter to Congress on HR 2840 and Bishop Amendment | November 3, 2011 |
| Letter to John Shimkus on Support of The Coal Residuals Re-use and Management Act | October 12, 2011 |
| Letter to House on Support of HR 1340 | September 15, 2011 |
| Letter to U.S. EPA and U.S. Army on CWA Guidance Comment Letter from 9 State NGOs | August 2, 2011 |
| Letter to U.S. EPA on Resolution 08-3, State Delegation of CWA Section 404 Permit Program | July 22, 2011 |
| Letter to U.S. EPA on proposed utility MACT rule | July 15, 2011 |
| Letter to DOE on Program Cuts | July 14, 2011 |
| Letter to Congress on Coal Residuals Re-use and Management Act | July 11, 2011 |
| Letter to House on Coal Residuals Re-use and Management Act | June 21, 2011 |
| Letter to U.S. EPA Deputy Administrator Perciasepe on Follow-up to FY13 Budget Development Meeting | June 15, 2011 |
| Letter to Congress Supporting FY2012 FUDS Funding | May 26, 2011 |
| Letter to Congress on U.S. EPA's 2011 Enacted Operating Plan | May 19, 2011 |
| Letter to Congress on Supporting FY 2012 Funding for DOE Nuclear Cleanup | May 17, 2011 |
| List of ECOS' Retrospective Rules | April 20, 2011 |
| Letter to House on HR1391 CCR Bill | April 13, 2011 |
| Letter to Senate on 2011 CR | February 28, 2011 |
| Letter to U.S. EPA on Stormwater Consultation | January 14, 2011 |
| Silva Response to ECOS letter on 404 | January 4, 2011 |
| Letter to Silva on 404 | December 6, 2010 |
| Letter to U.S. EPA Deputy Administrator Bob Perciasepe on Call Follow-up | December 1, 2010 |
| U.S. EPA Response to ECOS letter on Effluent Guidelines | November 22, 2010 |
| Letter to U.S. EPA on CCR Rulemaking | November 19, 2010 |
| Letter to Silva on Effluent Guidelines | August 19, 2010 |
| Letter to Congress on Request for Comment Extension in U.S. EPA's CCR Rulemaking | August 18, 2010 |
| Attachment to Draft FY2011-2015 Strategic Plan | August 10, 2010 |
| Letter to EPA on Draft FY 2011-2015 Strategic Plan | August 10, 2010 |
| Letter Exchange with EPA on Mercury | June 22, 2010 |
| Letter to EPA on Draft FY 2011-2015 Strategic Plan Outline | May 18, 2010 |
| Letter of Recognition to Matt Hale of U.S. EPA | April 27, 2010 |
| Letter to U.S. EPA on 404 Assumption Process Improvement | April 9, 2010 |
| U.S. EPA Response to 404 Assumption Letter | April 9, 2010 |
| Letter to Sens. Graham and Kerry on Preserving States’ Rights to Regulate Greenhouse Gas Emissions | March 29, 2010 |
| Letter to Senate EPW on Clean and Drinking Water SRFs | January 8, 2010 |
| Letter to Energy and Environment Subcommittee on CCW | December 14, 2009 |
| U.S. EPA Interim Response to letter on FACA Interpretation | December 3, 2009 |
| Letter from Gina McCarthy on GHG Reporting Rule | December 2, 2009 |
| Letter from Gina McCarthy on Grant Funding for Clean Air Programs | December 2, 2009 |
| Letter to U.S. EPA on FACA Interpretation | November 17, 2009 |
| Letter of thanks to U.S. EPA on Resolution of TRI Reporting Issue | October 30, 2009 |
| Letter to Mathy Stanislaus on U.S. EPA CCW Consultation | October 15, 2009 |
| Letter to U.S. EPA on General Motors Withdrawal from Mercury Vehicle Switch Recycling Program | September 17, 2009 |
| Letter to U.S. EPA on CWA 90 day action plan | September 3, 2009 |
| Letter to U.S. EPA on OECA National Enforcement Priorities FY2011-2013 | August 28, 2009 |
| Letter to U.S. EPA on CROMERR and Attachment | August 20, 2009 |
| Letter to White House OSTP on Nano | August 10, 2009 |
| Letter to Senate on Preemption | August 6, 2009 |
| Letter to U.S. EPA on ICIS-NPDES | July 30, 2009 |
| Letter to U.S. EPA on Strategic Planning Call | July 20, 2009 |
| U.S. EPA Response to Letter on Mercury | July 8, 2009 |
| Letter from Oberstar to GAO on CWA Trust Fund | June 26, 2009 |
| Letter to State Department on Mercury | June 18, 2009 |
| Letter to Stakeholders on CROMERR | June 15, 2009 |
| Letter to U.S. EPA on Mercury | June 12, 2009 |
| Letter to Congress on Preemption | June 4, 2009 |
| Letter to U.S. EPA on ICIS-NPDES Alternatives Analysis | June 4, 2009 |
| Letter to Senate on CWA Reauthorization | May 15, 2009 |
| Letter to U.S. EPA on Endangerment Comments | May 15, 2009 |
| Letter to U.S. EPA on GHG Rule Comments and GHG Exchange | May 15, 2009 |
| Letter to Congress on CWA | April 23, 2009 |
| Letter to OMB with on Federal Regulatory Review | March 16, 2009 |
| Letter to U.S. EPA on ICIS Comments | November 17, 2008 |
| Letter to U.S. EPA on TCR/DS AIP Comments | October 17, 2008 |
| Letter to Whitehouse on Support for Signing Mercury Export Ban of 2008 into Law | September 30, 2008 |
| Letter to Senate EPW on Support for State Involvement in National Climate Plan | September 17, 2008 |
| Letter to Senate Leaders on CAIR Vacatur | September 5, 2008 |
| Letter to Senate Leaders on CAIR Vacatur | September 5, 2008 |
| Letter to House Leaders on CAIR Vacatur | September 5, 2008 |
| ECOS Input on EPA’s Five-Year 2009-2014 Strategic Plan Update | August 20, 2008 |
| Letter to U.S. EPA on Strategic Planning | August 20, 2008 |
| Letter to Senate EPW on Support for State Involvement in National Climate Plan | June 5, 2008 |
| Letter to U.S. EPA on the Regulation of Coal Combustion Wastes (CCWs) | June 5, 2008 |
| Letter to U.S. EPA on 2010 Budget Issues | May 29, 2008 |
| Letter to Oberstar on ECOS Definition of Waters of the U.S. | May 29, 2008 |
| Letter to Congress on Brownfields Reauthorization | May 22, 2008 |
| Narrative on Clean Water Act and Wetlands | May 15, 2008 |
| Letter to Boxer and Inhofe on Mercury Bills | May 14, 2008 |
| Letter to EPA on State Consultation | May 7, 2008 |
| Letter to EPA on State Consultation | May 7, 2008 |
| U.S. EPA Response on State Consultation Letter | May 7, 2008 |
| Letter to U.S. EPA on GHG Exchange | March 13, 2008 |
| Letter to U.S. EPA on State Portions of the 2008 EPA Budget | January 24, 2008 |
| Letter to U.S. EPA on Request for Withdrawal of Proposed Permit Fees Rule | January 14, 2008 |
