South Platte River Basin; Laramie River Basin; Republican River Basin; Smoky Hill River Basin (Regulation #38)

Next Major Rulemaking Hearing:  June, 2015

Next Issues Formulation Hearing:  November, 2014

Next Issues Scoping Hearing:  October 2013

Upper South Platte Segment 16a Rulemaking:  April 8, 2013

• Cover Memo to Draft Final Action Documents
  • Draft Final Action Documents  
• Procedural Order  
• Water Quality Control Division Request to Submit Additional Data  
  • Additional Data  
• Suncor Energy (U.S.A.) Inc. rebuttal statement  
  • Exhibit 1   
  • Appendix B-1  
  • Appendix B-2  
  •  Appendix C - Data, available from party upon request  
  • Exhibit J    
• Water Quality Control Division rebuttal statement    
• Environmental Protection Agency rebuttal statement  
• Colorado Parks and Wildlife rebuttal statement  
• City of Aurora rebuttal statement  
• Prehearing Order  
• Suncor Motion to Delay Allocation of Time to March 27, 2013  
• Environmental Protection Agency responsive prehearing statement  
• City of Aurora responsive prehearing statement  
• Water Quality Control Division responsive prehearing statement  
  • Exhibit 1 - Suncor Fish Population Data (Excel workbook available upon request) 
  • Exhibit 2 - Suncor Fish Tissue Data (Excel workbook available upon request)  
  • Exhibit 3   - Mercury 
  • Exhibit 4 - Mercury Analysis (Excel workbook available upon request)  
  • Exhibit 5 - Effluent Data (Excel workbook available upon request)   
  • Exhibit 6    - Segmentation 
  • Exhibit 7    - Selenium  
  • Exhibit 8 - Parts 1-6  (Excel workbooks available upon request)
• Colorado Parks and Wildlife responsive prehearing statement  
• Suncor proponent's prehearing statement  
  • Exhibit 1 - Responses to WQCD Data Issues     
  • Exhibit A  - GEI Testimony
  • Exhibit B  -  Selenium Memo (data files available upon request)
  • Corrected Exhibit C  -  Mercury Memo (data files available upon request)
  • Exhibit D   - Biomonitoring and Bioaccumulation Report (data files available upon request)
  • Corrected Exhibit E   - Combined final selenium and mercury water quality monitoring (data files available upon request)
  • Exhibit F    - Brian Lilly Testimony
  • Exhibit G   - Revised Statement of Basis and Purpose
  • Exhibit H-1   - EPA Methylmercury Criterion 2001
  • Exhibit H-2   - EPA Methylmercury Guidance 2010
  • Exhibit H-3   - EPA Selenium 2004
• Amended Party Status List
• Notice of April 8, 2013 rulemaking hearing  

Boulder Creek Segment 9 Rulemaking:  October 9, 2012

• City of Boulder rebuttal statement   
• Prehearing Order  
• Water Quality Control Division responsive prehearing statement   
  • Exhibit 1      
• City of Boulder proponent's prehearing statement  
  • Exhibit 1  
  • Exhibit 2  
  • Exhibit 3  
  • Exhibit 4  
  • Exhibit 5  
• August 22, 2012 Amended Party Status List
• Notice of October 9, 2012 rulemaking hearing

Permanent Adoption Rulemaking: August 13, 2012 (Arsenic Standard, South Platte segment 14)

• Water Quality Control Division rebuttal statement  
• Prehearing Order
• Prehearing Statements
• July 9, 2012 Amended Party Status List
• Notice of August 13, 2012 rulemaking hearing

Emergency Rulemaking: December 13, 2011 (Arsenic Standard, South Platte segment 14)

• City of Thornton written comments
• Littleton/Englewood Wastewater Treatment Plant written comments
• City and County of Denver written comments  
  • Exhibit 1
• Colorado Department of Transportation written comments
• Environmental Protection Agency written comments
• Supporting information for emergency rulemaking
• Notice of December 13, 2011 emergency rulemaking hearing  

Last Major Rulemaking Hearing: June 8, 2009

Your opinion is important to us.  If you have comments regarding this information, or wish to have additional information included, please email us at cdphe.wqcc@state.co.us.