2011-08-04_ENFORCEMENT - C1981008 ‎(4)‎

• Permit No: C1981008
• IBM Index Class Name: ENFORCEMENT
• Doc Date: 8/4/2011
• Doc Name: OSM Technical Review of PR6 Prime Farmland Yield - Morgan Property
• From: OSM
• To: DRMS
• Email Name: SB1
• Email Name: DAB
• Email Name: MLT
• Media Type: D
• Archive: No

Subsection 10.0
Attachment 2.04.9 -6 "NCRS Prime Farmland Evaluation Letters"
2.04.10 Vegetation Information
2.04.10 Subsection 5.6 - Vegetation Baseline Sampling 1987, Irrigated Cropland
2.04.10 Subsection 6 - Vegetation Baseline Sampling 1999, Irrigated
Pasture (S. 6.2) & Irrigated Pasture Hayland (S. 6.4) - includes
Morgan Irrigated Cropland
2.04.12 Prime Farmland Investigations
2.05.4(2)(e) Revegetation
2.05.4(2)(e) Subsection 5.0 - Revegetation — Irrigated Cropland
2.06.6 Prime Farmlands
4.25.5 Revegetation Operations on Prime Farmland
E. State Permit C- 008 -81 Maps Reviewed :
2.04.9 -1
2.04.10
2.04.10 -1
2.05.4 -5
2.05.4 -6 Morgan Property Topsoil Replacement Plan as of June 2010
Exhibit 2.04.10 -1 Location of 1999 Production fields on Morgan & Johnson Property
F. Attachments to State Permit C- 008- 81Reviewed:
2.04.9 -6
2.05.4(2)(e) -2
2.05 .4(2)(e) -3
Soil Baseline Map New Horizon 2 Mine
Pre -mine Vegetation Map
Pre -mine Aerial Vegetation Map
Postmining Vegetation/Landuse Map New Horizon 2 Study Area
NCRS Prime Farmland Evaluation Letters
Summary of First Cutting Yields
Estimated Yields - Farmer & NRCS Letters
G. Other Resources/References Used in this Review:
1. Order 1 Soil Survey, New Horizon Mine; conducted by Intermountain Resource Inventories
for Western Fuels Colorado, March 1998
2. NRCS Soil Survey of San Miguel Area, Colorado (Parts of Dolores, Montrose, and San
Miguel Counties), 2003.
3. "Standards For Evaluation of Revegetation Success And Recommended Procedures For
Pre- And Postmining Vegetation Assessments," by North Dakota Public Service
Commission, Reclamation Division, July 2003, available at:
http: / /www.psc.nd. aov /dots / guidelines /coalminina /reve adocju1y2003final.pdf
4. National Agricultural Statistics Service yield data for Montrose County for irrigated alfalfa
cropland; available at:
http://www.nass.usda.gov/Data_and_Statistics/Ouick Stats_1 .0 /index.asp
5. Colorado State University Crops Testing Program, selected alfalfa production studies
available at: http:// www. extsoilcrop. colostate :edu/CropVar /alfalfa.html
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