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HomeMy WebLinkAbout8-1 Voyager Wetland Report AddendumTechnical Memo Page 1 TO: File FROM: Christine Pearcy, Environmental Scientist Faith Doty, Environmental Scientist RE: Voyager Property – Wetland Report Addendum, May 2023 Introduction In support of permitting needs associated with the Voyager Development, Morrison-Maierle, Inc. (Morrison-Maierle) completed an aquatic feature investigation for a 0.712-acre parcel of property located south of Baxter Lane on the north side of Bozeman. This parcel was not delineated during the original delineation effort performed by Power Engineering in 2021. This technical memo summarizes the findings of the May 2023 aquatic feature investigation. The wetland investigation was completed on May 4, 2023. The investigation area is located near the intersection of Baxter Lane and 27th Avenue in Bozeman, Montana. The legal description for the subject property is Minor Subdivision 404, Section 2, Township 2 South, Range 5 East, NW4NE4 Open Space, Gallatin County Montana. Figures 1 to 5 are provided immediately following the memo and depict topographic project vicinity, aerial photograph, local soils, National Wetland Inventory data, and aquatic feature delineation. Photographs are provided in Appendix A and Data Collection Forms are provided in Appendix B. Background The subject property currently contains a stormwater pond which will be expanded to accommodate additional stormwater for the Voyager Development project. This report documents the presence and extent of the existing stormwater pond on the subject property. City of Bozeman wetland regulations state in Section 38.610.010 that “provisions contained in these regulations do not apply to wetlands created by a wholly manmade water source used for irrigation purposes or stormwater control.” This stormwater collection pond is mapped on the City of Bozeman Infrastructure Viewer as containing 2 outlets for stormwater collection off of Baxter Lane. Based on guidance provided in the Revised Definitions of Waters of the United States (WOTUS) Final Rule (March 20, 2023), a stormwater collection pond would not be considered WOTUS and therefore not subject to regulation under the Clean Water Act. Methods On May 4, 2023, an aquatic feature investigation was completed for the subject property. Photographs are provided in Appendix A. The wetland investigation followed the methodology presented in the 1987 U.S. Army Corps of Engineers (USACE) Wetlands Delineation Manual (USACE Manual) and subsequent modifications outlined in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0) (USACE Supplement). The stormwater pond was delineated as a wetland and the boundary of the stormwater pond was surveyed by a professional land surveyor. Stormwater Collection Pond Delineation Page 2 Vegetation Vegetation within the investigation areas was classified based on wetland indicator status. The indicator status of vegetation was derived from the Montana 2020 State Wetland Plant List (USACE 2020). Using the current plant list vegetation cover qualified as hydrophytic where over 50% of the dominant plant species had an indicator status of obligate (OBL), facultative wet (FACW), and/or facultative (FAC). FAC plants, such as slender cinquefoil, are equally likely to occur in wetlands and non-wetlands. Vegetation cover was considered as upland where over 50% of the dominant plant species were classified as upland (UPL), and/or facultative upland (FACU). Plants observed within each investigation area were identified using Montana Manual of Vascular Plants (Lesica 2012). Vegetation nomenclature follows USACE (2020) and Lesica (2012). Soils Soil types within the project area were obtained from the Web Soil Survey (NRCS 2023) and analyzed in the field for texture and color using the Munsell Soil Color Charts (Munsell 2009). Wetlands must meet the qualifications of at least one hydric soil indicator or meet the definition of a hydric soil (a soil that formed under conditions of saturation, flooding or ponding long enough during the growing season to develop anaerobic conditions in the upper part [NRCS 2018b]). The NRCS mapped soil types within the project area are Straw loam, 0 to 4 percent slopes (64B) and Lamoose silt loam, 0 to 2 percent slopes (537A). Soil unit 537A has a hydric soil rating. National Wetland Inventory The U.S. Fish & Wildlife Service’s (USFWS) maintains the National Wetland Inventory (NWI), which serves as a publicly available resource that provides detailed information on the abundance, characteristics, and distribution of wetlands. According to the NWI database, no wetlands are located within the larger investigation area or the smaller project area. NWI indicates the presence of a PABFx wetland in the location of the stormwater collection pond. PABFx stands for Palustrine, Aquatic Bed, Semipermanently Flooded, Excavated. This feature is identified as being excavated by humans. Results One wetland was identified within the investigation area. The wetland area exists within the boundary of the stormwater collection pond. WDP 1 This test pit was taken within the stormwater collection pond. Vegetation was dominated by cattails (Typha latifolia, OBL). Soils contained redox features beginning at 4 inches below ground surface. Wetland hydrology indicators included surface water, saturation, watermarks, water-stained leaves, and the presence of reduced iron. Stormwater Collection Pond Delineation Page 3 UDP 1 This data point was taken outside of the stormwater collection pond. Vegetation was dominated by western wheatgrass (Pascopyrum smithii, FACU) and Canada thistle (Cirsium arvense, FAC). No indicators of hydric soil or wetland hydrology were observed. UDP 2 This data point was taken outside of the subject property boundary but within a NWI mapped wetland feature. Vegetation was dominated by western wheatgrass and Canada thistle. No indicators of hydric soil or wetland hydrology were observed Conclusion One wetland was delineated within the boundary of the subject property. This wetland exists within the boundary of the stormwater collection pond. Based on both City of Bozeman and US Army Corps of Engineers regulations, it is assumed that this stormwater collection pond is not jurisdictional. Wetland ID Wetland Type Wetland Type (HGM) Jurisdictional Status (based on current regulatory guidance) Size Location Stormwater Collection Pond Fresh Water Pond (PABFx) Depressional Non-jurisdictional 0.25 acres 49.699918, -111.069872 References Environmental Laboratory. 1987. Corps of Engineers Wetland Delineation Manual. Technical Report Y-87-1, U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS. Environmental Laboratory. 2010. Regional Supplement to the Corp of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region. (Version 2.0) U.S. Army Engineer Research and Development Center, Environmental Laboratory. Vicksburg, MS. Lesica, P. 2012. Manual of Montana Vascular Plants. Brit Press. Fort Worth, Texas. Munsell. 2000. Munsell Soil Color Charts. Macbeth Division of Kollmorgan Instruments. New Windsor, NY. Natural Resources Conservation Service (NRCS). 2018. Soil Survey for Gallatin County Area, Montana. http://websoilsurvey.nrcs.usda.gov. Natural Resources Conservation Service (NRCS). 2016. Hydric Soils Definition. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/use/hydric/?cid=nrcs142p2_053961 US Army Corps of Engineers (USACE) (2020), National Wetland Plant List, version 3.5. http://wetland-plants.usace.army.mil US Fish and Wildlife Service (USFWS) 2018. National Wetland Inventory Data. FIGURES 0 700 1,400350Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig1_Vicinity.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM VICINITY MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 12023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property MONTANA Project Area 0 500 1,000250Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig2_Topo.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM TOPOGRAPHIC MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 22023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property 0 30 6015Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig6_WD.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM AERIAL MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 32023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property 537A 64B 50B 0 30 6015Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig6_WD.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM SOILS MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 42023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property NRCS Soil Survey Units 0 30 6015Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig6_WD.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM NATIONAL WETLANDS INVENTORY MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 52023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property National Wetland Inventory Freshwater Emergent Wetland Freshwater Pond UDP2 UDP1 WDP1 0 30 6015Feet ± M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\GIS\Exhibits\Voyager Wetland Addendum\Fig6_WD.mxd; Plotted: 5/4/2023 COPYRIGHT © MORRISON-MAIERLE, INC., 2880 Technology Blvd. WBozeman, MT 59718 Phone: (406) 587-0721 VOYAGER WETLAND ADDENDUM WETLAND DELINEATION MAPGALLATIN CO.MT FIGURE NO. PROJECT NO. 10093.001 FIG. 62023 DRAWN BY: AAA CHK'D BY: BBB APPR. BY: CCC DATE: 05/2023 Legend Subject Property Wetland Boundary Data Points Upland Wetland 4,5140.1 Miles This product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. Feet 5250 Legend 263 Location 525 C Pearcy COB Response 05/03/2023 Created By: Created For: Date: City of Bozeman Stormwater Collection Infrastructure Gravity Main Proposed Points FY21 FY22 FY23 FY24 FY25 FY26 Proposed Lines FY21 FY22 FY23 FY24 FY25 FY26 In Progress Points In Progress Lines Street Names City Limits APPENDIX A PHOTOGRAPHS M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\04 Design\Reports\Wetland Addendum and COB Requirements\Photos 050423 Voyager Wetland Addendum DelineationBozeman, Montana Photo Date: May 4, 2023 Photo 1: Representative view of UDP1, facing south. Photo 2: View of soil pit at UDP1. M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\04 Design\Reports\Wetland Addendum and COB Requirements\Photos 050423 Voyager Wetland Addendum DelineationBozeman, Montana Photo Date: May 4, 2023 Photo 3: Representative view of UDP2, facing north. Photo 4: View of soil pit at UDP2. M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\04 Design\Reports\Wetland Addendum and COB Requirements\Photos 050423 Voyager Wetland Addendum DelineationBozeman, Montana Photo Date: May 4, 2023 Photo 3: Representative view of UDP2, facing north. Photo 4: View of soil pit at UDP2. M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\04 Design\Reports\Wetland Addendum and COB Requirements\Photos 050423 Voyager Wetland Addendum DelineationBozeman, Montana Photo Date: May 4, 2023 Photo 5: Representative view of man-made stormwater pond at WDP1, facing north. Photo 6: View of WDP1, facing west. M:\10093 Voyager Residential Partners, LLC\001_27th & Tschache Multi Family\04 Design\Reports\Wetland Addendum and COB Requirements\Photos 050423 Voyager Wetland Addendum DelineationBozeman, Montana Photo Date: May 4, 2023 Photo 7: Alternate view of WDP1, facing southwest. Photo 8: View of excavated soil profile at WDP1. APPENDIX B DATA SHEETS Applicant/Owner:State: Investigator(s): Landform (hillside, terrace, etc.):Flat Subregion (LRR):Lat: Soil Map Unit Name: Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No Are Vegetation , Soil , or Hydrology SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Yes No X Yes No X Yes X Yes No X ) 1. 2.(A) 3. 4.(B) Sapling/Shrub Stratum (A/B) 1. 2. 3. 4.x 1 = 5.x 2 = x 3 = x 4 = 1.x 5 = 2.Column Totals:(A)(B) 3. 4. 5. 6. 7. 8. 9. 10. 11. Woody Vine Stratum 1. 2. Yes X U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Western Mountains, Valleys, and Coast Region See ERDC/EL TR-10-3; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Tree Stratum Is the Sampled Area within a Wetland?No 80 16 Yes Remarks: Indicator Status 1 3 VEGETATION – Use scientific names of plants. (Plot size: Cirsium arvense No UPL FACU Herb Stratum 23 Yes Pascopyrum smithii 5 0 (If no, explain in Remarks.) Hydric Soil Present? Wetland Hydrology Present? naturally problematic?(If needed, explain any answers in Remarks.) (Plot size: Yes Number of Dominant Species That Are OBL, FACW, or FAC: significantly disturbed? Sample point is in an agricultural field, south of a man-made stormwater pond. The ground surface is disturbed by gopher activity. Remarks: FACU species FAC species OBL species FACU 3.78 2 - Dominance Test is >50% Problematic Hydrophytic Vegetation1 (Explain) 10 5 - Wetland Non-Vascular Plants1 4 - Morphological Adaptations1(Provide supporting =Total Cover ) Hydrophytic Vegetation Present?No data in Remarks or on a separate sheet) (Plot size: 0 Total % Cover of: =Total Cover 1 - Rapid Test for Hydrophytic Vegetation 208 Multiply by: 0 Prevalence Index = B/A = 23 3 - Prevalence Index is ≤3.01 FACU Hydrophytic Vegetation Indicators: UPL species FACW species Sampling Date: Sampling Point: Slope (%):Local relief (concave, convex, none): 05/04/23 Morrison-Maierle Faith Doty Agricultural field BozemanCity/County: None Long: 25 ft NoAre climatic / hydrologic conditions on the site typical for this time of year? S2 T2S R5E MT UDP1 Flat Section, Township, Range: 33.3% ) ) Prevalence Index worksheet: 69 0 Project/Site:Voyager Wetland Addendum LRR D, MLRA 39 NWI classification: Dominant Species? 45.699824 NAD83 Hydrophytic Vegetation Present? Datum:-111.070399 Straw loam, 0 to percent slopes (Plot size: =Total Cover 1 No FAC Yes35 Approximately 10% litter cover Percent of Dominant Species That Are OBL, FACW, or FAC: 52 Total Number of Dominant Species Across All Strata: Dominance Test worksheet: % Bare Ground in Herb Stratum Absolute % Cover 25 302 5 80 =Total Cover Taraxacum officinale Elymus lanceolatus Carduus nutans 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0 Sampling Point: %%Type1 Loc2 100 Type: Depth (inches):Hydric Soil Present?Yes No X Primary Indicators (minimum of one is required; check all that apply) Surface Water Present?Yes X Water Table Present?Yes X Saturation Present?Yes X Wetland Hydrology Present?Yes No X UDP1SOIL Silt loam Remarks Drainage Patterns (B10) Dry-Season Water Table (C2) Saturation Visible on Aerial Imagery (C9) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Water-Stained Leaves (B9) (except Presence of Reduced Iron (C4) Remarks: HYDROLOGY Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3: Soil is consistent throughout observed profile. Loose, granular structure that is easy to dig in up to a compacted layer at 14 inches. Compacted layer is likely due to tilling practices. Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Sparsely Vegetated Concave Surface (B8) Geomorphic Position (D2) Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6) Sediment Deposits (B2) Drift Deposits (B3) Water Marks (B1) Algal Mat or Crust (B4) Wetland Hydrology Indicators: Salt Crust (B11) Water-Stained Leaves (B9) (MLRA 1, 2 Frost-Heave Hummocks (D7)Other (Explain in Remarks) FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6) Stunted or Stressed Plants (D1) (LRR A) Inundation Visible on Aerial Imagery (B7) Iron Deposits (B5) Saturation (A3) Secondary Indicators (2 or more required) Shallow Aquitard (D3) (inches)Color (moist) 10YR 2/1 Color (moist) 0-18 Surface Water (A1) Loamy/Clayey Matrix Texture Redox FeaturesDepth Remarks: Field Observations: (includes capillary fringe) Soil was slightly moist from 4-18 inches. No hydrology indicatorrs. No No No Depth (inches): Depth (inches): Depth (inches): High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B) 2Location: PL=Pore Lining, M=Matrix. Restrictive Layer (if observed): 2 cm Muck (A10) (LRR A, E) Red Parent Material (F21) Very Shallow Dark Surface (F22) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 1 cm Muck (A9) (LRR D, G) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) (except MLRA 1) 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: 2.5 cm Mucky Peat or Peat (S2) (LRR G) Loamy Gleyed Matrix (F2) Iron-Manganese Masses (F12) (LRR D) Other (Explain in Remarks) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8)unless disturbed or problematic. 3Indicators of hydrophytic vegetation and wetland hydrology must be present, ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0 Applicant/Owner:State: Investigator(s): Landform (hillside, terrace, etc.):Flat Subregion (LRR):Lat: Soil Map Unit Name: Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No Are Vegetation , Soil , or Hydrology SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Yes No X Yes No X Yes X Yes No X ) 1. 2.(A) 3. 4.(B) Sapling/Shrub Stratum (A/B) 1. 2. 3. 4.x 1 = 5.x 2 = x 3 = x 4 = 1.x 5 = 2.Column Totals:(A)(B) 3. 4. 5. 6. 7. 8. 9. 10. 11. Woody Vine Stratum 1. 2. Yes X Approximately 11% litter cover Percent of Dominant Species That Are OBL, FACW, or FAC: 63 Total Number of Dominant Species Across All Strata: Dominance Test worksheet: % Bare Ground in Herb Stratum Absolute % Cover 25 325 5 84 =Total Cover Taraxacum officinale Elymus lanceolatus Carduus nutans 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. (Plot size: =Total Cover 4 No FAC Yes49 Project/Site:Voyager Wetland Addendum LRR D, MLRA 39 NWI classification: Dominant Species? 45.699712 NAD83 Hydrophytic Vegetation Present? Datum:-111.069872 Lamoose silt loam, 0 to 2 percent slopes PEM1A Long: 25 ft NoAre climatic / hydrologic conditions on the site typical for this time of year? S2 T2S R5E MT UDP2 Flat Section, Township, Range: 0.0% ) ) Prevalence Index worksheet: 48 0 Sampling Date: Sampling Point: Slope (%):Local relief (concave, convex, none): 05/04/23 Morrison-Maierle Faith Doty Agricultural field BozemanCity/County: 0 Total % Cover of: =Total Cover 1 - Rapid Test for Hydrophytic Vegetation 252 Multiply by: 0 Prevalence Index = B/A = 16 3 - Prevalence Index is ≤3.01 FACU Hydrophytic Vegetation Indicators: UPL species FACW species Problematic Hydrophytic Vegetation1 (Explain) 5 5 - Wetland Non-Vascular Plants1 4 - Morphological Adaptations1(Provide supporting =Total Cover ) Hydrophytic Vegetation Present?No data in Remarks or on a separate sheet) (Plot size: Remarks: FACU species FAC species OBL species FACU 3.87 2 - Dominance Test is >50% (If no, explain in Remarks.) Hydric Soil Present? Wetland Hydrology Present? naturally problematic?(If needed, explain any answers in Remarks.) (Plot size: Yes Number of Dominant Species That Are OBL, FACW, or FAC: significantly disturbed? Indicator Status 0 1 VEGETATION – Use scientific names of plants. (Plot size: Cirsium arvense No UPL FACU Herb Stratum 16 No Pascopyrum smithii 5 0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Western Mountains, Valleys, and Coast Region See ERDC/EL TR-10-3; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Tree Stratum Is the Sampled Area within a Wetland?No 84 10 No Remarks: Sample point is in an agricultural field. ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0 Sampling Point: %%Type1 Loc2 100 Type: Depth (inches):Hydric Soil Present?Yes No X Primary Indicators (minimum of one is required; check all that apply) Surface Water Present?Yes X Water Table Present?Yes X Saturation Present?Yes X Wetland Hydrology Present?Yes No X 2.5 cm Mucky Peat or Peat (S2) (LRR G) Loamy Gleyed Matrix (F2) Iron-Manganese Masses (F12) (LRR D) Other (Explain in Remarks) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8)unless disturbed or problematic. 3Indicators of hydrophytic vegetation and wetland hydrology must be present, High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B) 2Location: PL=Pore Lining, M=Matrix. Restrictive Layer (if observed): 2 cm Muck (A10) (LRR A, E) Red Parent Material (F21) Very Shallow Dark Surface (F22) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 1 cm Muck (A9) (LRR D, G) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) (except MLRA 1) 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Field Observations: (includes capillary fringe) Soil was moist from 1-18 inches. No hydrology indicators. No No No Depth (inches): Depth (inches): Depth (inches): Surface Water (A1) Loamy/Clayey Matrix Texture Redox FeaturesDepth (inches)Color (moist) 10YR 2/1 Color (moist) 0-18 Sparsely Vegetated Concave Surface (B8) Geomorphic Position (D2) Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6) Sediment Deposits (B2) Drift Deposits (B3) Water Marks (B1) Algal Mat or Crust (B4) Wetland Hydrology Indicators: Salt Crust (B11) Water-Stained Leaves (B9) (MLRA 1, 2 Frost-Heave Hummocks (D7)Other (Explain in Remarks) FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6) Stunted or Stressed Plants (D1) (LRR A) Inundation Visible on Aerial Imagery (B7) Iron Deposits (B5) Saturation (A3) Secondary Indicators (2 or more required) Shallow Aquitard (D3) Drainage Patterns (B10) Dry-Season Water Table (C2) Saturation Visible on Aerial Imagery (C9) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Water-Stained Leaves (B9) (except Presence of Reduced Iron (C4) Remarks: HYDROLOGY Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3: Soil is consistent throughout the observed profile. Worms present. Moist starting at 1 inch and formed peds. Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) UDP2SOIL Silt loam Remarks ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0 Applicant/Owner:State: Investigator(s): Landform (hillside, terrace, etc.):Flat Subregion (LRR):Lat: Soil Map Unit Name: X Are Vegetation , Soil , or Hydrology Are “Normal Circumstances” present?Yes X No Are Vegetation , Soil , or Hydrology SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Yes X No Yes X No Yes X Yes X No ) 1. 2.(A) 3. 4.(B) Sapling/Shrub Stratum (A/B) 1. 2. 3. 4.x 1 = 5.x 2 = x 3 = x 4 = 1.x 5 = 2.Column Totals:(A)(B) 3. 4. 5. 6. 7.X 8.X 9. 10. 11. Woody Vine Stratum 1. 2. Yes X U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Western Mountains, Valleys, and Coast Region See ERDC/EL TR-10-3; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Tree Stratum Is the Sampled Area within a Wetland?No No 75 1 No Remarks: Indicator Status 2 2 VEGETATION – Use scientific names of plants. (Plot size: Cirsium arvense No FAC OBL Herb Stratum 1 No Typha latifolia 1 72 (If no, explain in Remarks.) Hydric Soil Present? Wetland Hydrology Present? 25 ft naturally problematic?(If needed, explain any answers in Remarks.) (Plot size: Yes Number of Dominant Species That Are OBL, FACW, or FAC:FACU significantly disturbed? Sample collected at the bottom surface of a man-made stormwater pond designed to settle sediments and control stormwater discharges. Remarks: FACU species FAC species OBL species OBL 1.28 2 - Dominance Test is >50% Problematic Hydrophytic Vegetation1 (Explain) 0 5 - Wetland Non-Vascular Plants1 4 - Morphological Adaptations1(Provide supporting =Total Cover ) Hydrophytic Vegetation Present?No data in Remarks or on a separate sheet) (Plot size: 19 Total % Cover of: =Total Cover 1 - Rapid Test for Hydrophytic Vegetation 4 Multiply by: 38 Prevalence Index = B/A = 2 3 - Prevalence Index is ≤3.01 Hydrophytic Vegetation Indicators: UPL species FACW species Sampling Date: Sampling Point: Slope (%):Local relief (concave, convex, none): 05/04/23 Morrison-Maierle Faith Doty Bottom of stormwater pond BozemanCity/County: PABFx Long: 25 ft NoAre climatic / hydrologic conditions on the site typical for this time of year? S2 T2S R5E MT WDP1 concave Section, Township, Range: 100.0% ) ) Prevalence Index worksheet: 6 72 Project/Site:Voyager Wetland Addendum LRR D, MLRA 39 NWI classification: Dominant Species? 20 19 1 FACW 45.699918 NAD83 Hydrophytic Vegetation Present? Datum:-111.069872 Lamoose silt loam, 0 to 2 percent slopes (Plot size: Salix exigua Populus tremuloides Yes =Total Cover 2 No FAC Yes70 5% litter cover Percent of Dominant Species That Are OBL, FACW, or FAC: 1 Total Number of Dominant Species Across All Strata: Dominance Test worksheet: % Bare Ground in Herb Stratum Absolute % Cover 0 120 0 94 =Total Cover Carex nebrascensis Barbara vulgaris Heracleum lanatum 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0 Sampling Point: %%Type1 Loc2 100 93 5 C M 75 20 C M X X X Type: Depth (inches):Hydric Soil Present?Yes X No Primary Indicators (minimum of one is required; check all that apply) X X X X X X X X X Surface Water Present?Yes X Water Table Present?Yes X Saturation Present?Yes X Wetland Hydrology Present?Yes X No WDP1SOIL Undecomposed organic matter Silty clay with high organic matter Silty clay with high organic matter Remarks Loamy/Clayey Drainage Patterns (B10) Dry-Season Water Table (C2) Saturation Visible on Aerial Imagery (C9) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Water-Stained Leaves (B9) (except Presence of Reduced Iron (C4) Remarks: HYDROLOGY Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3: 4-10 inches also had 2% gley 3/10Y. 10-20 inches had 5% gley 3/10Y Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) 4-10 Sparsely Vegetated Concave Surface (B8) Geomorphic Position (D2) Raised Ant Mounds (D6) (LRR A)Surface Soil Cracks (B6) Sediment Deposits (B2) Drift Deposits (B3) Water Marks (B1) Algal Mat or Crust (B4) Wetland Hydrology Indicators: Salt Crust (B11) Water-Stained Leaves (B9) (MLRA 1, 2 Frost-Heave Hummocks (D7)Other (Explain in Remarks) FAC-Neutral Test (D5)Recent Iron Reduction in Tilled Soils (C6) Stunted or Stressed Plants (D1) (LRR A) Inundation Visible on Aerial Imagery (B7) Iron Deposits (B5) Saturation (A3) Secondary Indicators (2 or more required) Shallow Aquitard (D3) (inches)Color (moist) 5YR 4/1 5YR 4/2 Color (moist) 10YR 5/4 10YR 5/4 0-4 Surface Water (A1) Loamy/Clayey 2.5YR 5/2 Matrix Texture 10-20 Loamy/Clayey Redox FeaturesDepth Remarks: 0 16 0 Field Observations: (includes capillary fringe) Standing water in small pool 5 feet away from soil pit. No No No Depth (inches): Depth (inches): Depth (inches): High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B) 2Location: PL=Pore Lining, M=Matrix. Restrictive Layer (if observed): 2 cm Muck (A10) (LRR A, E) Red Parent Material (F21) Very Shallow Dark Surface (F22) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 1 cm Muck (A9) (LRR D, G) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) (except MLRA 1) 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: 2.5 cm Mucky Peat or Peat (S2) (LRR G) Loamy Gleyed Matrix (F2) Iron-Manganese Masses (F12) (LRR D) Other (Explain in Remarks) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8)unless disturbed or problematic. 3Indicators of hydrophytic vegetation and wetland hydrology must be present, ENG FORM 6116-9, JUL 2018 Western Mountains, Valleys, and Coast – Version 2.0