2011-09-30_PERMIT FILE - C1980007A ‎(15)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2011
• Doc Name: Wetland Delineation Report
• Section_Exhibit Name: Exhibit 82 Appendix I
• Media Type: D
• Archive: Yes

WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region
Project Site. MCC Refuse Pile Expansion, East City/County: Somerset/Gunnison Sampling Date: 10-8 -2009
Applicant/Owner: Mountain Coal Company, LLC State: CO Sampling Point: WC -WET
Investigator(s): Genesis Humphrey, Barr Engineering Company Section, Township, Range: S15, T13S, R90W
Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Concave Slope ( %): 30-40
Subregion (LRR): E- Rocky Mountain Forest 8 Rangeland Let: 38.92331 Long: - 107.43159 Datum: NAD 1983
Soil Map Unit Name. 13- Beenom- Absarokee Association, 20 to 60 percent slopes NWI classification: No Data Available
Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.)
Are Vegetation ❑, Soil ❑, Or Hydrology ❑, significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑
Are Vegetation ❑, Soil ❑, Or Hydrology ❑, naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS — Attach site map showinsl sampling point locations, transacts, important features, etc.
Hydrophytic Vegetation Present? Yes ® No ❑
Absolute
Hydric Soil Present? Yes ® No ❑
Is the Sampling Area within a Wetland? Yes ® No ❑
Wetland Hydrology Present? Yes ® No ❑
Remarks:
VFr,FTATIAN — ttca seiantific nnmas of nian}s
Tree Stratum (Plot Size: N/A - <5% cover)
Absolute
Dominant
Indicator
Dominance Test Worksheet:
% Cover
Species?
Status
1
Number of Dominant Species That Are
3 (A)
2.
OBL, FACW, or FAC:
3•
Total Number of Dominant Species Across
3 (B)
4.
All Strata:
= Total Cover
Percent of Dominant Species That Are
100 (A/B)
Sapimg /Shrub Stratum (Plot Size: 6' x 60')
OBL, FACW, or FAC:
Prevalence Index worksheet:
5. Populus angustifolia (5% tree, 40'/ shrub) 45 Y 08L
6. Alnus incana
40
Y
FACW
Total % Cover of:
Multiply by:
7. Salix exigua
20
N
OBL
OBL species
x1 =
8. Cornus sericea
5
N
FACW
FACW species
x2 =
9. Ame/anchier alnifolia
5
N
FACU
FAC species
x3 =
115
= Total Cover
FACU species
x4 =
Herb Stratum (Plot Size. 6'x12')
UPL species
x5 =
10. Equisetum arvense
50
Y
FAC
Column Totals: (A)
(B)
11. Solfdago canadensis
10
N
FACU
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
12.
13.
X Dominance Test is >50%
14.
Prevalence Index is <3.0'
15.
Morphological Adaptations' (Provide supporting data in
16
Remarks or on a separate sheet)
17.
Wetland Non - Vascular Plants'
18.
Problematic Hydrophytic Vegetation'
(Explain)
19.
20.
'Indicators of hydric soil and wetland hydrology must be present,
60
= Total Cover
unless disturbed or problematic.
Woody Vine Stratum (Plot Size: N/A — no vines)
1.
2.
= Total Cover
Hydrophytic Vegetation
% Bare Ground in Herb Stratum 2 -5 (drain channel)
Present? Yes
® No ❑
Remarks: POAN from tree layer was <5% cover. Combined with shrub layer.
US Army Corps of Engineers Western Mountains, Valley, and Coast — Interim Version