PERMFILE72364

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2004
• Doc Name: Colorado Discharge Permit ‎(NPDES)‎
• Section_Exhibit Name: Volume 7 Alluvial Valley Floor Exhibit 9
• Media Type: D
• Archive: Yes

TABLE OF GONTENTS
PAGE:
1.0 INTRODUCTION 1
1.1 GENERAL 1
1.2 PURPOSE OF THE STUDY 1
1.3 METHOD OF THE STUDY 2
2.0 ALLUVIAL VALLEY FLOOR DETERMINATION 3
2.1 COLORADO MINED LAND RECLAMATION REQUIREMENTS
FOR THE DETERMINATION OF AVFs 3
2.2 POTENTIAL AVF WITHIN THE STUDY AREA ~ 5
3.0 SITE CONDITIONS 5
3.1 GEOLOGY 5
3.2 MORPHOLOGY E
3.3 HYDROLOGY 7
3.3.1 NORTH FORK OF THE GUNNISON RIVER 7
3.3.2 STEVENS GULCH $
3.4 LAND USE AND FARMING ~
3.4.1 NORTH FORK OF THE GUNNISON RIVER S
3.4.2 STEVENS GULCH 11
3.5 SOILS 12
I •
4.0 STEVENS GULCH ALLUVIUM 14
4.1 ALLUVIUM EXTENT AND CHARACTER 14
4.2 UPLANDS 15
4.3 MINE FACILITIES INFLUENCING THE ALLUIIAL 15
VALLEY
5.0 NORTH FORK GUNNISON RIVER ALLUVIUM 16
5.1 ALLWIUM EXTENT luvD CHARACTER to
5.2 UPLANDS 17
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