WETLAND DETERMINATION DATA FORM - Region Project/Site: Susitna-Watana Hydroelectric Project Borough/City: Matanuska-Susitna Borough Sampling Date: 28-Aug-15 Applicant/Owner: Alaska Energy Authority Sampling Point: SW15_T333_11 Investigator(s): AFW Landform (hillside, terrace, hummocks etc.): Hillside Local relief (concave, convex, none): concave Slope: 21.2 % / 12.0 ° Elevation: Subregion : Interior Alaska Mountains Lat.: Long.: Datum: WGS84 Soil Map Unit Name: NWI classification: Upland 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 Is the Sampled Area Hydric Soil Present? Yes No Yes NoNoNo Wetland Hydrology Present? Yes No within a Wetland? Remarks: nivation hollow

VEGETATION - Use scientific names of . List all species in the plot. Dominance Test worksheet: Absolute Dominant Indicator Tree Stratum % Cover Species? Status Number of Dominant Species That are OBL, FACW, or FAC: 2 (A) 1. Total Number of Dominant 2. Species Across All Strata: 4 (B) 3. Percent of dominant Species 4. That Are OBL, FACW, or FAC: 50.0% (A/B) 5. Prevalence Index worksheet: Total Cover: 0 Total % Cover of: Multiply by: 50% of Total Cover: 20% of Total Cover: Sapling/Shrub Stratum 0 0 OBL Species0 x 1 = 0 1. Cassiope tetragona 45 FACU FACW Species12 x 2 = 24 2. Salix polaris 12 FACW FAC Species35 x 3 = 105 3. 10 UPL FACU Species62 x 4 = 248 4. Salix arctica 7 FACU UPL Species28 x 5 = 140 5. Dryas integrifolia 7 FACU Column Totals: 137 (A) 517 (B) 6. Vaccinium uliginosum 5 FAC Prevalence Index = B/A = 3.774 7. Vaccinium vitis-idaea 5 FAC 8. 0 Hydrophytic Vegetation Indicators: 9. 0 Dominance Test is > 50% 10. 0 Prevalence Index is ≤3.0

Total Cover: 91 Morphological Adaptations (Provide1 supporting data in Herb Stratum 50% of Total Cover: 45.5 20% of Total Cover: 18.2 Remarks or on a separate sheet) 1 1. Geum glaciale 15 UPL Problematic Hydrophytic Vegetation (Explain) 1 2. Festuca altaica 10 FAC Indicators of hydric soil and wetland hydrology must 3. bigelowii 7 FAC be present, unless disturbed or problematic. 4. Poa arctica 5 FAC Plot size (radius, or length x width) 10m 5. norvegica ssp. saxatilis 3 FACU % Cover of Wetland Bryophytes 6. Trisetum spicatum 2 FAC (Where applicable) 2 FACU 7. Oxyria digyna % Bare Ground 55 1 FACU 8. Bistorta plumosa Total Cover of Bryophytes 40 9. Lycopodium clavatum 1 FACU 10. 0 Hydrophytic Total Cover: 46 Vegetation 50% of Total Cover: 23 20% of Total Cover: 9.2 Present? Yes NoNoNo

Remarks:

US Army Corps of Engineers Alaska Version 2.0 SOIL Sampling Point: SW15_T333_11

Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators) Matrix Redox Features Depth (inches) Color (moist) % Color (moist) % Type 1 Loc 2 Texture Remarks 01 100 hemic organics

117 7.5YR 2.5/2 100 Silt Loam sand and organic inclusions. gravel and cobbles

1 Type: C=Concentration. D=Depletion. RM=Reduced Matrix 2 Location: PL=Pore Lining. RC=Root Channel. M=Matrix

3 Hydric Soil Indicators: Indicators for Problematic Hydric Soils: 4 Histosol or Histel (A1) Alaska Color Change (TA4) Alaska Gleyed Without Hue 5Y or Redder Underlying Layer Histic Epipedon (A2) Alaska Alpine swales (TA5) Hydrogen Sulfide (A4) Alaska Redox With 2.5Y Hue Other (Explain in Remarks) Thick Dark Surface (A12) 3 One indicator of hydrophytic vegetation, one primary indicator of wetland hydrology, Alaska Gleyed (A13) and an appropriate landscape position must be present Alaska Redox (A14) 4 Give details of color change in Remarks Alaska Gleyed Pores (A15)

Restrictive Layer (if present): Type: Hydric Soil Present? Yes NoNoNo Depth (inches):

Remarks: no hydric soil indicators

HYDROLOGY Wetland Hydrology Indicators: Secondary Indicators (two or more are required) Primary Indicators (any one is sufficient) Water Stained Leaves (B9) Surface Water (A1) Inundation Visible on Aerial Imagery (B7) Drainage Patterns (B10) High Water Table (A2) Sparsely Vegetated Concave Surface (B8) Oxidized Rhizospheres along Living Roots (C3) Saturation (A3) Marl Deposits (B15) Presence of Reduced Iron (C4) Water Marks (B1) Hydrogen Sulfide Odor (C1) Salt Deposits (C5) Sediment Deposits (B2) DrySeason Water Table (C2) Stunted or Stressed Plants (D1) Drift Deposits (B3) Other (Explain in Remarks) Geomorphic Position (D2) Algal Mat or Crust (B4) Shallow Aquitard (D3) Iron Deposits (B5) Microtopographic Relief (D4) Surface Soil Cracks (B6) FACneutral Test (D5) Field Observations: Surface Water Present? Yes No Depth (inches):

Water Table Present? Yes No Depth (inches): Wetland Hydrology Present? Yes NoNoNo Saturation Present? Yes No (includes capillary fringe) Depth (inches): Describe Recorded Data (stream gauge, monitor well, aerial photos, previous inspection) if available:

Remarks: no wetland hydrology indicators

U.S. Army Corps of Engineers Alaska Version 2.0