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 -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, T11 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 Let: 38.92294 Long: - 107.43222 Datum- NAD 1983
Sod 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 ❑
Absolute
% Cover
Hydric Soil Present? Yes ® No ❑
Is the Sampling Area within a Wetland? Yes ® No ❑
Wetland Hydrology Present? Yes ® No ❑
1
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.
VFGFTATIAN — Llnp weipntific nampc of niants
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/B)
Sapling /Shrub Stratum (Plot Size: 6' x 60')
OBL, FACW, or FAC:
Prevalence Index worksheet:
5. Sa /lx exigua 75 Y DEL
6. Alnus incans
30
Y
FACW
Total % Cover of: Multiply by:
7. Populus angustifolia
25
N
FAC
OBL species x1 =
8. Corns 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 arcticus
50
Y
FACW
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
12. Calamagrostis canadensis 20 N OBL
13. Symphotrichum novaeangliae
20
N
FACW
X Dominance Test is >50%
14. Carex /asiocarpa
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.
GALA is NI in Region 8. OBL in adjacent Region 5.
US Army Corps of Engineers Westem Mountains, Valley, and Coast — interim Version