VI. References

Amoco, 1991, “Amoco Plans Test of Nitrogen Injection for Coalbed Methane”, Oil and Gas Journal, October 28, 1991.

Amoco, 1994, “Pine River Fruitland Coal Outcrop Investigation”: Southern Rockies Business Unit, Amoco Production Company, Denver, Colorado.

Amoco, 1999, Tiffany Enhanced Coalbed Methane Production vs. Pre-enhanced Recovery.

Arnold, E.C., and Dugan, T.A., 1971, “Wildcat Near Durango Before 1900 Was First San Juan Basin Activity”, in Western Oil Reporter, August issue.

Beckstrom, J.A. and Boyer, D.G., 1991, “Aquifer Protection Considerations of Coalbed Methane Development in the San Juan Basin”, in: Proceedings of Low-Permeability Reservoirs Symposium; Denver, Colorado, April 1991, Society of Petroleum Engineers, p. 371-386.

Bell, Morris, 1999, Colorado Oil and Gas Conservation Commission, personal communication.

Bennett, Philip, and Lee, Roger, 1996, “Pine River Ranches, Colorado; Soil Gas Investigation, Final Report prepared for the Colorado Oil and Gas Conservation Commission”, Department of Geological Science, University of Texas at Austin.

BLM, 1999, “Your Lands; Your Legacy - 1998 Annual Report”, U.S. Department of the Interior- Bureau of Land Management’s Headquarters, National Center, and Field Office Employees, GPO.

BLM, 1995, “Fruitland Outcrop Soil Gas Reconnaissance”, Bureau of Land Management-San Juan Resource Area. unpublished report.

BLM, 1996, “Soil Vapor Study, Southern Ute Indian Reservation, La Plata County, Colorado”, unpublished report by Bureau of Land Management-San Juan Resource Area.

Chafin, Daniel T., 1994, “Source and Migration Pathways of Natural Gas in Near-Surface Ground Water Beneath the Animas River Valley, Colorado and New Mexico”, USGS Water Resources Investigations Report 94-4006, p. 1-2.

Cox, David, 1999, verbal communication.

Cox, David, 1998, “Preliminary Analysis of Long-Term Seepage Potential in the Valencia Canyon Area”, Questa Engineering, Denver, CO.

Dugan, T.A.,1990, Personal communication with Paul Older for “Animas Valley Hydrogeologic Study” 1991.

Durango Herald-Democrat Staff Writer, 1932, Mountain Moving South of Durango, “Durango Herald-Democrat”, December 23, 1932.

Enervest San Juan Operating, LLC, “MAMBPRES.xls, 97-99”, Durango, Colorado, May, 1999

Enervest San Juan Operating, LLC, “Seepmtr, 95-99”, Durango, Colorado, May, 1999

Fassett, James E., Condon, Steven M., Huffman, A. Curtis, and Taylor, David J., 1997, “Geology and Structure of the Pine River, Florida River, Carbon Junction, and Basin Creek Gas Seeps, La Plata County, Colorado”, USGS Open-File Report 97-59.

Fassett, James E. and Hinds, Jim S., 1971, “Geology and Fuel Resources of the Fruitland Formation and Kirtland Shale of the San Juan Basin, New Mexico and Colorado”, U.S. Geological Survey Professional Paper 676.

Gash, B. W., Volz, R. F., Potter, G., and Corgan, J.M., 1993, “The Effects of Cleat Orientation and Confining Pressure on Cleat Porosity, Permeability and Relative Permeability in Coal” in: Proceedings of the 1993 International Coalbed Methane Symposium, University of Alabama,Tuscaloosa, No. 9321, p. 252, 304.

GRI, 1997,“Coal Bed Reservoir Gas In Place Analysis”, GRI Course 97/0263 Manual, 1997. The GRI Manual references the following documents:

Rightmire, C.T., Eddy, G.E., and Kiri, J.N., 1984, “Coalbed Methane Resources of the United States”, AAPG Studies in Geology Series #17,

Schwochow, F.,1997, ”International Coal Seam Gas Report”, Karin Point Publishers, ,

Kelso, B., Lombardi, T., and Kuuskraa, J., 1995, “Drilling and Production Statistics for Major United States Coal Bed Methane and Gas Shale Reservoirs”, GRI Report GRI 96/0052.

Halverson, Harold, 1994, civil action #94-C-105, “Jones vs Amoco”, affidavit, June 30, 1994.

Harder, A.H., Whitman, H.M., and Rogers, S.M., 1965, “Methane in the Fresh-Water Aquifers of Southwestern Louisiana and Theoretical Explosion Hazards”, Department of Conservation, Louisiana Geological Survey, Louisiana Department of Public Works, p. 14.

Heine, George, 1999, “Soil Vapor Measurements in the Northern San Juan Basin: a Preliminary Statistical Analyses”, e-mail, Department of Interior, Bureau of Land Management, NIRM.

Hobbs, G. W., Holland, J. R., and Winkler, R. O., 1993, “Production and Economic Model for the Cedar Cove Coalbed Methane Field Black Warrior Basin, Alabama”, in: Proceedings of the 1993 International Coalbed Methane Symposium, University of Alabama,Tuscaloosa, p. 304.

Hocker, Roy, 1994, civil action #93 -CV-130, “Lyon vs Amoco”, affidavit, January 4, 1994.

Hocker, Roy, 1999, Verbal communication.

Zimmerman, Scott, 1999, Verbal communication, Huber Corporation.

Kearl, P.M., 1988 “Results of Hydrogeologic Investigation for the Charles Winters vs. Union Texas Petroleum Case”, Marked Exhibit “A”, Amoco Production Files.

Kuchta, J.M., Rowe, V.R., and Burgess, D.S., 1980, “ Spontaneous Combustion Susceptibility of U.S. Coals”, U.S. Bureau of Mines Report of Investigations, RI-8474, p37.

LT Environmental, Inc., 1998, “Soil Gas Monitoring System-Phase III Outcrop Gas Seep Study Sites, La Plata County, Colorado”, Vol. 1-2.

MacDonald, E.D., and Arrington, J.B., 1970, “The San Juan Basin: My Kingdom Was a County”

Mavor, Matt, and Nelson, C.R., 1997, “Coalbed Reservoir Gas-In-Place Analysis”, Gas Research Institute Report No. GRI-97/0263; Chicago, Illinois.

Nelson, Dr. Charles R., 1999, “Changing Perception Regarding the Size and Production Potential of Coalbed Methane Resources”, Gas Research Institute, Gas Tips- Summer, 1999. Pp. 4-11.

Nelson, C.R., Li,W., Lazar, I.M., Malik, A., and Lee, M.L., 1997, “Influences of Geologic variables on the Content of Light Oils in U.S. Coals”, paper No.9731, Proceedings 1997 International Coalbed Methane Symposium, University of Alabama, Tuscaloosa, AL (May 12-16), pp. 313-322.

Oldaker, Paul, 1999, “Monitoring Data Review, Pine River Ranches”, prepared for Colorado Oil & Gas Conservation Commission and Amoco Production Company, USA.

Price, H.S., and Ansel, K.L.,1993, “Perforation Characteristics of High Permeability Saturated and Under-saturated Coals”, in: Proceedings of the 1993 International Coalbed Methane Symposium, University of Alabama, Tuscaloosa, No.9360.

Puls, Earl, Jr, (undated),“Problems that Can Occur with Soil Saturation”, Louisiana State University Agricultural Center.

Puri, R., and Yee, D., 1990, “Enhanced Coalbed Methane Recovery”, in SPE paper No.20732, prepared for the 65^th Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, New Orleans, LA.

Questa Engineering Corporation, 1998, “Preliminary Analysis of the Simon Land and Cattle Injection Well Tests, La Plata County”, Golden, Colorado.

Sarnecki, Joseph C.,1991, “Formation of Clinker and its Effects on Locating and Limiting Coal Resources”, in: Geology in Coal Resource Utilization, Tech Books.

Schenderlein, William, Hatami, Bahman, and Kraus, Julie, 1993, “ Ground Water Quality Monitoring Program – Colorado Western Slope”, Colorado Division of Water Resources, Office of the State Engineer, Denver, Colorado.

Schwochow, S., 1997,” International Coal Seam Gas Report”, GRI report 97-0263, Kairnport Publishing, Denver, Colorado.

Shuey, Chris, 1990, “Policy and Regulatory Implications of Coal-Bed Methane Development in the San Juan Basin, New Mexico and Colorado”in: International Symposium on Oil and Gas Exploration and Production Waste Management Practices, 1^st, Proceedings, New Orleans, p. 757-769.

Smith, A.C., 1989, “Bureau Develops Spontaneous Combustion Formula”, “Coal” Vol. 26, No.7, p73.

Smith, T.N., 1995 “Coalbed Methane Potential for Alaska and Drilling Results for the Upper Cook Inlet Basin”, paper no.9501, Proceedings Intergas’95, Tuscaloosa, AL. Pp. 1-21.

Stonebrooke Energy and Environmental, 1996, “Fruitland Formation Outcrop Gas Seep Study, La Plata County, Colorado”, Denver, Colorado.

Whitton, William, 1996, verbal communication.

Vanderwilt, John W., 1934, “A Recent Rockslide Near Durango, In La Plata County, Colorado”, in Journal of Geology, USGS, Golden, Colorado, v.42

Velez, Nelson, 1993, “Baseline Groundwater Quality Study and Database”, Ignacio-Blanco Groundwater Task Force.

Yeh, Nai-Shong, 1999, “Well Test Analysis on Simon Water Disposal Well”, Upstream Technology Group, BP Amoco.