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Area Reports
Denver Basin
Denver Basin
Arapahoe Aquifer Baseline Domestic Water Well Background Investigation (September 2007)
Baseline Water Quality Review, Elbert County, Colorado (May 2012)
Firestone, Colorado (Coors V6-14Ji)
Greater Wattenberg Area (GWA)
- Greater Wattenberg Area Baseline Study (June 2007)
- Rule 318A
- Active Well Density Map
- Active Well Pad Map
- GWA COGCC Staff Recommendation Map
- Lands in GWA Subject to Rule 318A
- Well/Pad Density Statistics
- Trend and Data Analysis Greater Wattenberg Area Water Quality Analysis Project Northeastern Colorado (June 2015)
Ground Survey in Weld County for Methane Anomalies (June 2016)
Laramie Foxhills Structure Maps
Leyden Gas Storage Facility Closure Activities and Monitoring
New API Numbers for Wells Affected by Creation of the County of Broomfield
Ogallala Aquifer Baseline Study (July 2007)
- Ogallala Aquifer Baseline Study Figures 4-1 to 4-6
- Ogallala Aquifer Baseline Study Final
- Ogallala Aquifer Baseline Study Final Appendix B
- Ogallala Aquifer Baseline Study Table 4-1
Parkland Estates
Upper Crow Creek Designated Groundwater Basin Study, Weld County, Colorado (August 2008)
Piceance Basin
Piceance Basin
Bradenhead Monitoring
- 2008 - 2013
- 2014
- 2015
- 2016
- 2017
Casing and Cement Standards
- Digital Formation Salinity Analysis, Mamm Creek (June 2015)
- Digital Formation Salinity Analysis, Parachute (June 2016)
- Digital Formation Salinity Analysis, Plateau Field (June, 2020)
- Digital Formation Salinity Analysis, Rulison (July 2014)
- Report Page 15 Correction: Casing and Cement Standards for Geologic Isolation Piceance Basin Bradenhead Monitoring Area and Nearby Fields (May 31, 2016)
- Report: Casing and Cement Standards for Geologic Isolation Piceance Basin Bradenhead Monitoring Area and Nearby Fields (April 18, 2016)
- Summary Presentation: Casing and Cement Standards for Geologic Isolation Piceance Basin Bradenhead Monitoring Area and Nearby Fields (April 18, 2016)
Garfield County Air Screening Study (October 2002)
- Final Report - "A Community-based Short-term Ambient Air Screening Study in Garfield County for Oil and Gas Related Activities: Results and Discussion"
- Garfield County Air Monitoring Investigation - GVCA Presentation
- Presentation - Garfield County Air Monitoring Results
Project Rio Blanco
- Email Correspondence RE: Instrument Calibration Record (May 2012)
- Project Rio Blanco Compliance Inspection Report for the COGCC (March 2012)
- Sampling and Analysis Plan for Wells Within 2 Miles of Rio Blanco Test Site
- Project Rio Blanco Sundry Radionuclides Testing (April 2012)
- Project Rio Blanco Survey Meter Calibration (May 2012)
Project Rulison
- Rulison Path Forward Report(June 2009)
- 2008 COGCC Audit of Activities Subject to the Rulison SAP (August 2008)
- Project Rulison 2011 Production Monitoring Report
- Project Rulison 2012 Production Monitoring Report
- Project Rulison 2013 Production Monitoring Report
- Project Rulison Action on Applications for Permit to Drill 1/2 to 3 Miles From Rulison Test Site (December 2007)
- Comments and Responses
- Response to CDPHE Comments on Incident Management Plan
- Response to Combined COGCC, CDPHE, DOE, and Garfield County Comments Attachments 1-6
- Response to Congressional Delegations
- Response to Danielson Comments Attachment 7
- Response to Danielson Further Observations Attachment 9
- Response to Danielson Observation Comments Attachment 8
- Response to Danielson Request for Denial of Permits
- Response to Garfield County Comments
- Compliance Inspection Report for the COGCC (June 2013)
- Independent Review of Rulison Project Radiological Monitoring 2008 - 2010
- Independent Review of the June 2015 Project Rulison Area Sampling (March 2016)
- PRESCO, Inc. Gas Well Drilling Monitoring Reports
- 2004/2005
- PRESCO 2004 Baseline and 2005 Annual Water Sampling Report
- PRESCO 2005 Gas Well Drilling Monitoring Report
- PRESCO 2004/2005 Appendix A USGS Data
- PRESCO 2004/2005 Appendix B EPA_DOE Data
- PRESCO 2004/2005 Appendix C COGCC Data
- PRESCO 2004/2005 Appendix D 2004 Baseline Results
- PRESCO 2004/2005 Appendix E 2005 Data
- PRESCO 2004/2005 Appendix E 2005 Data VOCs
- PRESCO 2004/2005 Appendix F Stiff Diagrams
- PRESCO 2004/2005 Appendix G EPA Tritium Concentration Graphs
- PRESCO 2004/2005 Appendix H Site Photographs
- PRESCO 2004/2005 Figures and Tables
- 2006
- PRESCO 2006 Annual Water Sampling Report
- PRESCO 2006 Gas Well Drilling Monitoring Report
- PRESCO 2006 ACZ Laboratory Data
- PRESCO 2006 Appendix A - DOE Rulison End State Vision
- PRESCO 2006 Appendix A USGS Data
- PRESCO 2006 Appendix B EPA CY 2005_2006
- PRESCO 2006 Appendix B EPA_DOE Data
- PRESCO 2006 Appendix C COGCC Data
- PRESCO 2006 Appendix C DRI Gas Results 2005
- PRESCO 2006 Appendix D 2004 Baseline Results
- PRESCO 2006 Appendix D Ludlum
- PRESCO 2006 Appendix E 2006 Data
- PRESCO 2006 Appendix E Landauer Results
- PRESCO 2006 Appendix F Isotech Gas Sample Results
- PRESCO 2006 Appendix F Stiff Diagrams
- PRESCO 2006 Appendix G Produced Water Results 2006
- PRESCO 2006 Water Figures and Tables
- PRESCO 2006 Gas Figures and Tables
- Gamma Analysis Lab Reports Part 1
- Gamma Analysis Lab Reports Part 2
- Tritium Analysis Lab Reports
- 2004/2005
- Project Rulison 1st Qtr Binder 2009
- Project Rulison 1st Qtr Binder 2010 (Noble, Williams, Encana)
- Project Rulison 2nd Qtr Binder 2009
- Project Rulison 2nd Qtr Binder 2010 (Noble, Williams, Encana)
- Project Rulison 3rd Qtr Binder 2009
- Project Rulison 4th Qtr Binder 2008
- Project Rulison 4th Qtr Binder 2009 (Laramie Energy II)
- Project Rulison 4th Qtr Binder 2009 (Noble, Williams, Encana)
- Project Rulison Information Session October 2007 Hearing (October 2007)
- Project Rulison Operational and Environmental Monitoring 1st Qtr 2008
- Project Rulison Operational and Environmental Monitoring 1st Qtr 2009
- Project Rulison Operational and Environmental Monitoring 1st Qtr 2010
- Project Rulison Operational and Environmental Monitoring 2nd Qtr 2008
- Project Rulison Operational and Environmental Monitoring 2nd Qtr 2009
- Project Rulison Operational and Environmental Monitoring 2nd Qtr 2010
- Project Rulison Operational and Environmental Monitoring 3rd Qtr 2008
- Project Rulison Operational and Environmental Monitoring 3rd Qtr 2009
- Project Rulison Operational and Environmental Monitoring 4th Qtr 2008
- Project Rulison Operational and Environmental Monitoring 4th Qtr 2009
- Project Rulison Research Summary and Conclusions (May 1998)
- Project Rulison Sampling Battlement Mesa 36-13B Tier I Well Annual Production Sampling Report (April 2015)
- Project Rulison Transcript of Information Session (July 2009)
- Response to Quality Assurance/Control Issues with Isotech Data 2008 - 2010 (Laramie Energy II)
- Rulison Monitoring Results of the Caerus Re-sample (October 2015)
- Sampling and Analysis Plan for Wells Near The Rulison Test Site
Reclamation
- Piceance Basin Reclamation Study 1997(Project No. 1664)
- Williams Production Company Reclamation Success Reports (Project No. 1621)
Water Quality
- Bradenhead Monitoring Areas - Buzzard, Mamm Creek, and Rulison
- Coalbed Methane Stream Depletion Assessment
- Coalbed Methane Stream Depletion Assessment Studies
- Coalbed Methane Stream Depletion Assessment Plan of Study (January 2007)
- East Mamm Creek Area Evaluation
- COGCC Cementing and Bradenhead Pressure Monitoring Practices (September 2011)
- Divide Creek Area Joint Study Summary Presentation (September 2011)
- Divide Creek Area Joint Study Summary Report (September 2011)
- East Mamm Creek Project Drilling and Cementing Study(June 2011)
- EMC Study Response Memo (September 2011)
- Garfield County RFP For Hydrogeological Study - Data Download (April 2005)
- Garfield_WQ_metadata.htm - Explanation of files
- OGAnalyses6_7S92_93W.csv - For downloading analytical results for samples collected from Oil and Gas wells
- OGwells6_7S92_93W.csv - For posting identifying info and coordinates for oil and gas wells with API numbers
- WWAnalyses6_7S92_93W.csv - For downloading analytical results for samples collected from water wells or other sample locations without API numbers, including water wells, surface water, springs, ponds, etc.
- WWells6_7S92_93W.csv - For posting identifying info and coordinates for water wells or other sample locations without API numbers, including water wells, surface water, springs, ponds, etc.
- Zip File - All files zipped for download
- Hydrogeologic Characterization of the Mamm Creek Field Area in Garfield County
- Hydrogeologic Characterization of the Mamm Creek Field Area in Garfield County Phase II
- Hydrogeologic Characterization of the Mamm Creek Field Area in Garfield County Phase III
- Mamm Creek Gas Field - West Divide Creek Gas Seep Updates
- 2004 West Divide Creek Area Soil Gas Survey, Sections 34-36 T6S-R92W & 1-3 and 10-15 T7S-R92W (November, 2004)
- Divide Creek Seep Status (December 2007)
- Divide Creek Seep Status Update (April 14, 2004)
- Divide Creek Seep Status Update (April 27, 2004)
- Divide Creek Seep Status Update (June 2004)
- Divide Creek Seep Status Update (May 2004)
- West Divide Creek Seep
- West Divide Seep Area Monitoring Combined Lab Reports for September 2011
- West Divide Seep Area Monitoring Status Report for August 2013
- West Divide Seep Area Monitoring Status Report for December 2006
- West Divide Seep Area Monitoring Status Report for December 2008
- West Divide Seep Area Monitoring Status Report for December 2009
- West Divide Seep Area Monitoring Status Report for December 2010
- West Divide Seep Area Monitoring Status Report for February 2013
- West Divide Seep Area Monitoring Status Report for June 2006
- West Divide Seep Area Monitoring Status Report for June 2007
- West Divide Seep Area Monitoring Status Report for June 2008
- West Divide Seep Area Monitoring Status Report for June 2009
- West Divide Seep Area Monitoring Status Report for June 2010
- West Divide Seep Area Monitoring Status Report for June 2011
- West Divide Seep Area Monitoring Status Report for June 2012
- West Divide Seep Area Monitoring Status Report for March 2007
- West Divide Seep Area Monitoring Status Report for March 2009
- West Divide Seep Area Monitoring Status Report for March 2010
- West Divide Seep Area Monitoring Status Report for March 2011
- West Divide Seep Area Monitoring Status Report for March 2012
- West Divide Seep Area Monitoring Status Report for May 2013
- West Divide Seep Area Monitoring Status Report for October 2012
- West Divide Seep Area Monitoring Status Report for October 2013
- West Divide Seep Area Monitoring Status Report for September 2006
- West Divide Seep Area Monitoring Status Report for September 2007
- West Divide Seep Area Monitoring Status Report for September 2009
- West Divide Seep Area Monitoring Status Report for September 2010
- West Divide Seep Area Monitoring Status Report for September 2011
- Phase I and II Baseline Water Quality Study Garfield and Rio Blanco Counties (Project No. 551)
- Phase III Baseline Water Quality Study Garfield County (Project No. 1531)
- Phase IV Baseline Water Quality Study Garfield County, County (February 2007)
Well Density
- Barrett (Williams) 20-acre Density Order - Review of First Year Implementation (December 2001)
- Barrett (Williams) 20-acre Density Order - Review of Second Year Implementation (December 2002)
- Williams Production's Williams Fork Geological Presentation (April 2006)
Raton Basin
Raton Basin
Coalbed Methane Stream Depletion Assessment
- Coalbed Methane Stream Depletion Assessment Studies
- Coalbed Methane Stream Depletion Assessment Plan of Study (January 2007)
Huerfano County
- Methane Investigation, Monitoring, and Mitigation Program (MIMMP)
- MIMMP Monitoring Updates ALL (December 2007 - August 2011) (THIS IS A LARGE ZIP FILE >560MB)
- Petroglyph & Norwest Applied Hydrology MIMMP Presentation (December 2007)
- Petroglyph & Norwest Questa Engineering MIMMP Presentation (December 2007)
- Petroglyph Ground Water Study
- Petroglyph's MIMMP Report (December 2007)
- COGCC Public Information Presentation November 15, 2008 Walsenburg
- COGCC Staff Presentation at Petroglyph Hearing (December 2007)
- Petroglyph April 2008 Monthly Report (May 2008)
- Petroglyph April 2009 Monthly Report (May 2009)
- Petroglyph April 2010 Monthly Report (May 2010)
- Petroglyph August 2008 Monthly Report (September 2008)
- Petroglyph August 2009 Monthly Report (September 2009)
- Petroglyph August 2010 Monthly Report (September 2010)
- Petroglyph August 2011 Monthly Report (August 2011)
- Petroglyph December 2008 Monthly Report (January 2009)
- Petroglyph December 2009 - January 2010 Monthly Report (January 2010)
- Petroglyph December 2010 Monthly Report (January 2011)
- Petroglyph February 2009 Monthly Report (March 2009)
- Petroglyph February 2010 Monthly Report (March 2010)
- Petroglyph January 2011 Monthly Report (March 2011)
- Petroglyph July 2008 Monthly Report (August 2008)
- Petroglyph July 2010 Monthly Report (August 2010)
- Petroglyph June - July 2009 Monthly Report (July 2009)
- Petroglyph June 2008 Monthly Report (July 2008)
- Petroglyph June 2010 Monthly Report (July 2010)
- Petroglyph June 2011 Monthly Report (July 2011)
- Petroglyph March 2008 Monthly Report (April 2008)
- Petroglyph March 2009 Monthly Report (April 2009)
- Petroglyph March 2010 Monthly Report (April 2010)
- Petroglyph March 2011 Monthly Report (April 2011)
- Petroglyph May 2008 Monthly Report (June 2008)
- Petroglyph May 2009 Monthly Report (June 2009)
- Petroglyph May 2010 Monthly Report (June 2010)
- Petroglyph May 2011 Monthly Report (May 2011)
- Petroglyph Methane Mitigation Well Aquifer Testing Report (August 2008)
- Petroglyph Methane Monitoring and Response Plan (April 2008)
- Petroglyph Monitor Well POCI 55 Summary Report (March 2008)
- Petroglyph November 2008 Monthly Report (December 2008)
- Petroglyph November 2009 Monthly Report (December 2009)
- Petroglyph November 2010 Monthly Report (December 2010)
- Petroglyph October 2008 Monthly Report (November 2008)
- Petroglyph October 2009 Monthly Report (November 2009)
- Petroglyph October 2010 Monthly Report (November 2010)
- Petroglyph September 2008 Monthly Report (October 2008)
- Petroglyph September 2009 Monthly Report (October 2009)
- Response to the POCI 55 Summary Review (June 2008)
- Review of the POCI 55 Summary Report (May 2008)
- Review of the Petroglyph Methane Mitigation Well Aquifer Testing Report (October 2008)
Phase I Gas Seep Investigation
- Ground Survey of the Raton Basin for Methane Seeps (Apogee Scientific, June 2001)
- Maps of Spatial Data (Raton Basin map data can be viewed with COGCC GIS online mapping tool)
- Produced Gas and Water Testing of CBM Gas Wells in the Raton Basin (ESN Rocky Mountain, June 2003)
- Raton Basin Coal Mine Feature Inventory (Lewicki, July 2001)
- Raton Basin COGCC Staff Conclusions (November 2003)
- Raton Basin COGCC Summary Slides and Notes (2002 - 2003)
- Slide Presentation Overview of the Raton Basin Study (Gorody, August 2003)
- Water Quality Data Collected from Water Wells in the Raton Basin (The Seacrest Group, January, 2003)
- Water/Gas Sample Laboratory Results
Phase II Gas Seep Investigation
Phase III Gas Seep Investigation
- Ground Survey of Las Animas County for Methane Anomalies (July 2015)
- Raton Driving Survey Map (July 2015)
TBA Study
- Raton Basin TBA Summary Report (January 2015)
- TBA Report - Staff Presentation to the Commission, March 2, 2015 (March 2015)
Perforating Charges
- The Chemistry of Perforating Charges Used in the Trinidad Area
San Juan Basin
San Juan Basin
3M Project
- 2002 Fruitland Outcrop Monitoring Report (January 2003)
- 2003 Fruitland Outcrop Monitoring Report (October 2003)
- 2004 Fruitland Outcrop Monitoring Report (October 2004)
- 2005 Fruitland Outcrop Monitoring Report (March 2006)
- 2006 Fruitland Outcrop Monitoring Report (January 2007)
- 2007 Fruitland Outcrop Monitoring Report (June 2008)
- 2008 Fruitland Outcrop Monitoring Report (March 2009)
- 2009 Fruitland Outcrop Monitoring Report (February 2010)
- 2010 Fruitland Outcrop Monitoring Report (February 2011)
- 2011 Fruitland Outcrop Monitoring Report (December 2011)
- 2012 Fruitland Outcrop Monitoring Report (December 2012)
- 2013 Fruitland Outcrop Monitoring Report (September 2013)
- 2015 Fruitland Outcrop Monitoring Report - La Plata County (September 2015)
- 2016 Fruitland Outcrop Monitoring Report - La Plata County (November 2016)
- 2017 Fruitland Outcrop Monitoring Report - La Plata County (March 2018)
- 2018 Fruitland Outcrop Monitoring Report - La Plata County (February 2019)
- 2019 Fruitland Outcrop Monitoring Report - La Plata County (January 2020)
- 2020 Fruitland Outcrop Monitoring Report - La Plata County (April 2021)
- CBM Model Final Report
- Hydrologic Model Final Report
- Late Cretaceous Fruitland Formation Geologic Mapping, Outcrop Measured Sections and Subsurface Stratigraphic Cross Sections. Northern La Plata County, Colorado
- Monitoring Well Reports
- San Juan Basin 3M Project Summary
4M Project
- 2009 4M Monitoring Report (2010 March)
- 2010 4M Monitoring Report (2011 March)
- 2011 4M Monitoring Report (2012 March)
- 2012 4M Monitoring Report (2013 March)
- 2013 4M Monitoring Report (2014 May)
- 2014 4M Monitoring Report (2015 June)
- 2015 4M Monitoring Report (2016 June)
- 2016 4M Monitoring Report (2017 May)
- 2017 4M Monitoring Report (2018 June)
- 2018 4M Monitoring Report (2019 June)
- 2019 4M Monitoring Report (2020 April)
- 2020 4M Monitoring Report (2021 May)
- 4M Mitigation Installation and Startup Report (2009 September)
- 4M Mitigation Operations and Maintenance Report (2009 September)
- 4M Mitigation Operations and Maintenance Report (2010 September)
- 4M Mitigation Operations and Maintenance Report (2011 June)
- 4M Mitigation Operations and Maintenance Report (2012 June)
- 4M Mitigation Operations and Maintenance Report (2013 June)
- 4M Mitigation Operations and Maintenance Report (2014 August)
- 4M Mitigation Operations and Maintenance Report (2015 June)
- 4M Mitigation Operations and Maintenance Report (2017 January)
- 4M Mitigation Operations and Maintenance Report (2018 January)
- 4M Mitigation Operations and Maintenance Report (2022 July)
- 4M Mitigation Summary Report 2009 - 2014 (2015 January)
- 4M Project Coal Bed Methane Monitoring Well Installation, La Plata County, Colorado (2010 June)
- 4M Project Deep Canyon Well Installation Report, Archuleta County, Colorado (2010 May)
- 4M SFTC Expansion/Renovation Evaluation (2020 June)
- Archuleta County, 4M Project CBM Monitoring/Well Installation Report (2010 January)
- Gas Seepage Mitigation (2006 May)
- Geophysical Logs
- La Plata County 4M Monitoring Well Location Project (2008 August)
- LTE Mitigation Pilot Test Report (2007 February)
- Semi-annual 4M Mitigation Operations and Maintenance Report (2010 April)
Archuleta County
- 2007 Fruitland Outcrop Monitoring Report (March 2008)
- 2008 Fruitland Outcrop Monitoring Report (February 2009)
- 2009 Fruitland Outcrop Monitoring Report (February 2010)
- 2010 Fruitland Outcrop Monitoring Report (December 2010)
- 2011 Outcrop Zone Report - Final (September 2012)
- 2012 Outcrop Zone Report - Final (November 2012)
- 2013 Outcrop Zone Report - Final (October 2013)
- 2014 Outcrop Zone Report - Final (December 2014)
- 2015 Outcrop Zone Report - Final (October 2015)
- 2016 Outcrop Zone Report - Final (December 2016)
- 2017 Outcrop Zone Report - Final (November 2017)
- Colorado Geological Survey Coal Quality Data (February 2011)
- DRM-2011 Outcrop Zone Report Presentation for Stakeholders (September 2012)
- Fruitland Outcrop Final Monitoring Report (October 2006)
- Fruitland Outcrop Initial Reconnaissance Report (November 2004)
- Fruitland Outcrop Monitoring Report (January 2006)
- Geologic Map & Coal Bed Stratigraphy of the Fruitland Formation in Western Archuleta County (June 2011)
- Supplemental 2013 Fruitland Outcrop Monitoring Fourth Quarter (June 2014)
BLM Bradenhead Monitoring
- 2005 Bradenhead Monitoring Report
- 2006 Bradenhead Monitoring Report
- 2007 Bradenhead Monitoring Report
- 2010 Bradenhead Monitoring Report
BLM North San Juan
Bondad, Colorado
- ALL Methane Seep Survey Reports
- Bryce 1-X Inspection Summary (November 2005)
- Bryce 1-X Soil Gas Survey (June 2016)
- Excavation Summary (October 2005)
- Geophysical Survey (June 2005)
Methane
- Coalbed Methane Stream Depletion Assessment Study - Northern San Juan Basin (February 2006)
- Methane in Ground Water, San Juan Basin, La Plata County Colorado: Analysis of Data Submitted in Response to COGCC Orders 112-156 and 112-157 (July 2004)
- San Juan Basin Ground Water Modeling Study: Ground Water – Surface Water Interactions Between Fruitland Coalbed Methane Development and Rivers (October 2001)
- San Juan Basin Summary of Bradenhead Testing and Ground Water Quality (May 2000)
Southern Ute Indian Tribe (SUIT)
- Hydraulic Fracturing Resolution (June 2015)
- Mineral Ownership Map Legend
- Surface Ownership Map Legend
Quality Analysis June 2010
- Trend and Data Analysis San Juan Basin Water Quality Analysis Project San Juan Basin, Colorado (June 2010)
Quality Analysis June 2011
- Trend and Data Analysis San Juan Basin Water Quality Analysis Project San Juan Basin, Colorado (June 2011)
Quality Analysis June 2015
- Trend and Data Analysis San Juan Basin Water Quality Analysis Project San Juan Basin, Colorado (June 2015)
San Luis Valley
Sand Wash Basin
Sand Wash Basin
- Final Moffat County Baseline Water Quality Study, August 2007
Southeast Colorado
Southeast Colorado
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