COLORADO

Health Impact Assessment for Battlement Mesa, Garfield County, Colorado, Colorado School of Public Health, Colorado University Denver (2nd draft, 3/11)

The Garfield County Study of Methane Contamination

• Study's Conclusion: Review of Phase II Hydrogeolgic Study, Prepared for Garfield County, by Geoffrey Thyne, Dec. 20, 2008 "There is a temporal trend of increasing methane in groundwater samples over the last seven years that is coincident with the increased number of gas wells installed in the Mamm Creek Field"
• Phase I Hydrogeologic Characterization of the Mamm Creek Field Area in Garfield County (PDF), Prepared for Board of County Commissioners, Garfield County, Colo., March 23, 2006
• Phase II Hydrogeologic Characterization of the Mamm Creek Field Area, Garfield County, Colorado(PDF), S.S. Papadopulos & Associates, Inc., Boulder, Colo., September 2008
• Appendix A: Garfield County Hydrogeologic Characterization Study -- Phase II Field, Sampling Plan for Task 1 (PDF)
• Appendix C: Task 1 and 2 Groundwater Sample Laboratory Analytical Reports (PDF)
• Appendix D: Task 1 and 2 Gas Composition and Methane Isotope Laboratory Analytical Reports
  

Update on the Ongoing Investigation of the Presence of Methane Gas in Water Wells in Laramie/Fox Hill Aquifer (PDF), From Colorado Oil & Gas Commission's David S. Neslin to the Weld County Commission, April 13, 2009