2024-01-22_PERMIT FILE - C1980007

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 1/22/2024
• Section_Exhibit Name: Master Table of Contents
• Media Type: D
• Archive: No

West Elk Mine

Rev .03/06, 04/06 & 05/06- PR10; 09/07 & 02/08- PR12; 04/09- TR117; 08/09- TR118; 08/09- TR119; 01/10- TR120; 07/10- TR121; 08/18-
PR15; TR148- 10/20
2.04.8 Climatological Information…………….………….………………..2.04-115
Temperature………..……….………….………………………….2.04-114
Regional……..….…..………………………………..…………….2.04-115
Precipitation………..………………………………..2.04-117
Somerset Precipitation Station………………..2.04-117
Wilcox Ranch Station…………………………2.04-117
Paonia Stations………………………………..2.04-118
Horse Creek Precipitation Station…………….2.04-119
Site Specific Conditions…………….………………2.04-119
Site Description………………………………2.04-119
Wind………………………………………… 2.04-120
Wind Speed and Direction……………………2.04-121
Temperature…………………………………..2.04-122
Relative Humidity and Precipitation…………2.04-122
Air Quality……………………………………2.04-122

2.04.9 Soils Resource Information…………….……………………………2.04-126
History of Soil Surveys at the West Elk Mine……..…….………..2.04-126
Mapping Units…………………………………….…….2.04-128
Soil Sampling and Analysis……………..…..2.04-128
1976 Soil Survey………………….……2.04-128
1980 Soil Survey……………………….2.04-129
General Limitations for Use: Permit Area…..…………….….….2.04-129
Salinity and Sodium Concentrations………...……………….2.04-129
Calcium and Magnesium Carbonate Concentrations…….…2.04-129
Texture………….………………….…..2.04-130
Drainage……….……………….. …….2.04-133
Flood Hazard……………..……………2.04-133
Mass Movement……………….………2.04-133
Soil Productivity…………….……..…..2.04-134
Quantitative Soil Analysis………….….2.04-134
2.04.10 Vegetation Information ...................................................................... 2.04-136
Introduction…….……………………………………….……..2.04-136
Plant Community Distribution in the Environmental
Study Area .......................................................................... 2.04-136
Vegetation Communities of the West Elk Mine Study Area.. 2.04-137
Oakbrush ............................................................................. 2.04-137
Aspen .............................................................................. 2.04-139
Douglas Fir .......................................................................... 2.04-139
Xeric Mountain Shrub ....................................................... 2.04-140
Sagebrush ............................................................................ 2.04-141
Juniper .............................................................................. 2.04-142
Riparian .............................................................................. 2.04-142
Wetlands .............................................................................. 2.04-143
Wet Meadow ....................................................................... 2.04-144