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: 10-7-2009
Applicant/Owner: Mountain Coal Company, LLC State CO Sampling Point: WB -WET
Investigator(s): Genesis Humphrey, Barr Engineering Company Section, Township, Range. S15, T1 3S, R90W
Landform (hillslope, terrace, etc ): Small Terrace and Hillslope Local relief (concave, convex, none): Concave Slope (%): 0 (terrace)-30(slope)
Subregion (LRR): E- Rocky Mountain Forest & Rangeland Lat: 38.92294 Long: -107.43222 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 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 ❑
Dominant
Species?
Remarks: WB is a seepage wetland draining
down mountainside, average 30-40% slope. Soil and hydrological sample point located in a small flat terrace
within mountainside; vegetation sample plots located on area of gentle slope.
VEGETATION — Use scientific names of
plants
Tree Stratum (Plot Size: N/A — no trees)
Absolute
% Cover
Dominant
Species?
Indicator
Status
Dominance Test Worksheet:
1
Number of Dominant Species That Are
4 (A)
2
OBL, FACW, or FAC:
3.
Total Number of Dominant Species Across
4 (B)
4
All Strata:
= Total Cover
Percent of Dominant Species That Are
100 (A/13)
Sapling/Shrub Stratum (Plot Size: 6' x 60')
OBL, FACW, or FAC
Prevalence Index worksheet:
5. Salix exigua 75 Y OBL
6. Alnus incana
30
Y
FACW
Total % Cover of:
Multiply by
7. Populus angustifolia
25
N
FAC
OBL species
x1 =
8. Cornus sericea
5
N
FACW
FACW species
x2 =
9.
FAC species
x3 =
140
= Total Cover
FACU species
x4 =
Herb Stratum (Plot Size. 4' x 18')
UPL species
x5 =
10 Equisetum arvense
50
Y
FAC
Column Totals: (A)
(B)
11. Juncus arcficus
50
Y
FACW
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
12. Calamagrostis canadensis 20 N OBL
13. Symphotrichum novae-angliae
20
N
FACW
X Dominance Test is >50%
14. Carex lasiocarpa
5
N
OBL*
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,
145
= 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 1-2
Present? Yes
® No ❑
Remarks Herb stratum situated in two 2'x18' strips, both on either side of 1.5' wide unvegetated seepage channel.
' CALA is NI in Region 8. OBL in
adjacent Region
S.
US Anny Corps of Engineers Western Mountains, Valley, and Coast — Interim Version