2014-08-19_PERMIT FILE - C1980007 ‎(11)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/19/2014
• Doc Name: Wetland Delineation Report
• Section_Exhibit Name: Exhibit 82 Appendix I
• Media Type: D
• Archive: No

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-UPL
Investigator(s): Genesis Humphrey, Barr Engineering Company Section, Township, Range: S15, T13S, R90W
Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 30-40
Subregion (LRR) E- Rocky Mountain Forest & Rangeland Lat: 38.92337 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 ❑, Sod ❑, 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 showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present? Yes ® No ❑
Hydric Soil Present? Yes ❑ No ®
Is the Sampling Area within a Wetland? Yes ❑ No
Wetland Hydrology Present? Yes ❑ No
Tree Stratum (Plot Size: 30' radius)
Remarks -
VEGETATION — Use scientific names of plants
Tree Stratum (Plot Size: 30' radius)
Absolute
% Cover
Dominant
Species?
Indicator
Status
Dominance Test Worksheet:
1. Populus angustifolia
40
Y
FAC
Number of Dominant Species That Are
5 (A)
2
OBL, FACW, or FAC:
3.
Total Number of Dominant Species Across
6 (B)
4
All Strata:
40
= Total Cover
Percent of Dominant Species That Are
0.83 (A/B)
Sapling/Shrub Stratum (Plot Size: 15' radius)
OBL, FACW, or FAC:
Prevalence Index worksheet:
5. Alnus incana 20 Y FACW
6. Quercus gambelii
10
Y
UPL
Total % Cover of: Multiply by:
7 Populus angustifolia
10
Y
FAC
OBL species x1 =
8. Salix exigua
10
Y
OBL
FACW species x2 =
9 Amelanchieralnifolia
5
N
FACU
FAC species x3 =
10. Cornus sericea
5
N
FACW
60
= Total Cover
FACU species x4 =
Herb Stratum (Plot Size: 5' radius)
UPL species x5 =
10. Equisetum arvense
50
Y
FAC
Column Totals: (A) (B)
11.
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.
'indicators of hydric soil and wetland hydrology must be present,
50
= 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 0
Present? Yes ® No ❑
Remarks Vegetation in entire area is hydrophytic, dominated by POAN and SAEX, but no hydric soils or hydrology to be found.
US Army Corps of Engineers Westem Mountains, Valley, and Coast — Interim Version