September 20, 201 Soils Investigation for Agricultural Designation Windemere Place, Missoula County, Montana The purpose of this report is to compare on-site soils of the proposed subdivision with the soils shown by the Natural Resource Conservation Service (NRCS), in order to determine the agricultural designations of those soils. A field soils investigation was completed on April 7, 201. Fourteen (14) test pits were conducted to a depth of 0 inches throughout the proposed subdivision (locations shown on attached Soil Profile Exhibit ). Soil profiles were developed for each test pit and compared to the NRCS Soil Survey Report for the site. The soil profiles determined from the field investigation are based on USDA soil texture classifications determined by hand texturing techniques. There is no direct correlation between the USDA soil texture classification and agricultural designation. Therefore, we looked at the soil texture found in the field, looked at the soil texture described by NRCS, and compared the two in order to determine agricultural designation. The NRCS soils report shows two different soil classifications within the proposed subdivision: Alberton Very Fine Sandy Loam on the northeast portion, and Grantsdale Loam on the southwestern portion (see attached Soils Map Exhibit ). The NRCS provides the following farmland classification and typical soil profile: Alberton Very Fine Sandy Loam Grantsdale Loam Farmland Classification: Prime if Irrigated Farmland Classification: Prime if Irrigated 0 to 9 inches: very fine sandy loam 0 to 9 inches: loam 9 to 1 inches: sandy loam 9 to 17 inches: loam 1 to inches: sandy loam 17 to 32 inches: loam to 0 inches: loamy sand 32 to 0 inches: very gravelly loamy sand The NRCS soil profiles listed above do not correspond exactly with what was found in the field. However, per the attached flow chart used by the field engineer for hand texturing, the soils found on-site are generally consistent with the textures and soil depths associated with Alberton Very Fine Sandy Loam and Grantsdale Loam. Geographically, test Pits 1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2 correspond with the Grantsdale Loam; those test pits also are generally consistent with the soil profile listed for Grantsdale Loam: A topsoil layer of either Sandy Clay Loam, Silt Loam, or Sandy Loam and a lower layer of coarse sand (all of which are similar to the NRCS profile of loam and very gravelly loamy sand per the hand-texturing flow chart). Geographically, Test Pits 1-3, 1-4, 5-1, 5-2, 5-3, 5-4 correspond with Alberton Very Fine Sandy Loam;
those test pits also are generally consistent with the NRCS soil profile for Alberton Very Fine Sandy Loam: a topsoil layer of Sandy Loam, underlaid by a course sand (loamy sand and sand are similar on the hand-texturing flow chart). CONCLUSION: Our analysis of the agricultural designation for the soils at the Windermere Place Subdivision is consistent with the NRCS soil designations. The site s Alberton Very Fine Sandy Loam and Grantsdale Loam soils classify as Prime Farmland if Irrigated. Prepared by: Brandon Staglund, P.E. Project Engineer WGM Group Attachments: Prime Farmland Exhibit, Soils Map Exhibit, Soil Profiles, Soil Profile Exhibit, NRCS Soil Report, Hand Texturing Flowchart
0 q 200 Not prime farmland 400 1 inch = 400 feet Prime farmland if irrigated Not prime farmland WINDEMERE DR 5 Not prime farmland 3 WINDEMERE CT 2 4 Not prime farmland Prime farmland if irrigated BIG FLAT RD Prime farmland if irrigated Disclaimer: This map is neither a legally recorded map nor a survey and is not intended to be used as such. WGM Group does not guarantee the accuracy, current status, or completeness of the material contained herein and is not responsible for any misuse or misrepresentation of this information or its derivatives. This map is a graphic representation and is to be used for general planning purposes only. WHITETAIL LN E VALL Y W IN Prime farmland if irrigated CR GRE ENA ES RD D LN Not prime farmland PROJECT: 15-07-05 FILE NO: 150705_wndmr_primefarmland.mxd FILE PATH: W:\PROJECTS\150705\GIS\MXD DRAFT: CEG APPROVE: KFA DATE: AUGUST 201 SHEET 1 PRIME FARMLAND EXHIBIT WINDEMERE PLACE MISSOULA COUNTY, MONTANA WINDEMERE LN NICK PARADISE RD ELS O N LN 1111 EAST BROADWAY MISSOULA, MONTANA 59802 TEL: 40-8-411 FAX: 40-8-7 Not prime farmland WWW.WGMGROUP.COM 1 OF 1
PARADISE RD WINDEMERE LN Grantsdale loam, 0 to 2 percent slopes 1111 EAST BROADWAY MISSOULA, MONTANA 59802 TEL: 40-8-411 FAX: 40-8-7 WWW.WGMGROUP.COM WINDEMERE DR SOILS MAP EXHIBIT WINDEMERE PLACE MISSOULA COUNTY, MONTANA Alberton very fine sandy loam, 0 to 2 percent slopes BIG FLAT RD Grantsdale loam, 0 to 2 percent slopes SITE 0 q 100 1 inch = 200 feet Alberton very fine sandy loam, 0 to 2 percent slopes 200 Disclaimer: This map is neither a legally recorded map nor a survey and is not intended to be used as such. WGM Group does not guarantee the accuracy, current status, or completeness of the material contained herein and is not responsible for any misuse or misrepresentation of this information or its derivatives. This map is a graphic representation and is to be used for general planning purposes only. PROJECT: 15-07-05 FILE NO: 150705_wndmr_soils.mxd FILE PATH: W:\PROJECTS\150705\GIS\MXD DRAFT: CEG APPROVE: KFA DATE: Winkler gravelly loam, cool, to 0 percent slopes SHEET JULY 201 1 OF 1
DATE : April 7, 201 Test Pit: TP1-1 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY CLAY LOAM 3 (" - 0") COARSE SAND AND EXTREMELY COARSE SAND 0 9 THIN LAYER OF RED DISCOLORATION AT 9" SLIGHTLY MOIST SOIL BELOW 9" 0 0 INCHES, BOTTOM OF TEST PIT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP1-1
DATE : April 7, 201 Test Pit: TP1-2 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY CLAY LOAM 3 (" - 0") COARSE SAND AND EXTREMELY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP1-2
DATE : April 7, 201 Test Pit: TP1-3 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - 20") SANDY LOAM 3 (20" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP1-3
DATE : April 7, 201 Test Pit: TP1-4 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - 20") SANDY LOAM 3 (20" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP1-4
DATE : April 7, 201 Test Pit: TP2-1 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - 20") SILT LOAM 3 (20" - 0") SAND, LIGHT BROWN, DRY SAND 0 (0" - 0") COARSE SAND AND VERY COARSE SAND THIN LAYER OF BLACK DISCOLORATION AT " SLIGHTLY MOIST SOIL BELOW " 9 0 0 INCHES, BOTTOM OF TEST PIT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP2-1
DATE : April 7, 201 Test Pit: TP2-2 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 0 (" - 0") COARSE SAND AND VERY COARSE SAND 9 0 0 INCHES, BOTTOM OF TEST PIT RED/BROWN DISCOLORATION AT 0" WITH MOIST SOIL W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP2-2
DATE : April 7, 201 Test Pit: TP3-1 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SILTY CLAY LOAM 3 (" - ") SAND, LIGHT BROWN, DRY SAND 0 (" - 0") COARSE SAND AND VERY COARSE SAND 9 SLIGHTLY MOIST SOIL BELOW " 0 0 INCHES, BOTTOM OF TEST PIT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP3-1
DATE : April 7, 201 Test Pit: TP3-2 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 3 (0" - ") SILTY CLAY LOAM 0 9 (" - 0") COARSE SAND AND VERY COARSE SAND 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP3-2
DATE : April 7, 201 Test Pit: TP4-1 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 (" - 0") COARSE SAND AND EXTREMELY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP4-1
DATE : April 7, 201 Test Pit: TP4-2 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 3 (0" - ") SANDY LOAM 0 9 (" - 0") SAND AND VERY SAND 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP4-2
DATE : April 7, 201 Test Pit: TP5-1 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 (" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP5-1
DATE : April 7, 201 Test Pit: TP5-2 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 (" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP5-2
DATE : April 7, 201 Test Pit: TP5-3 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 (" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP5-3
DATE : April 7, 201 Test Pit: TP5-4 LOT ID: Tract 15, COS 21 and Tract 14A-1, COS 38 (0" - ") SANDY LOAM 3 (" - 0") COARSE SAND AND VERY COARSE SAND 0 9 0 0 INCHES, BOTTOM OF TEST PIT NO GROUNDWATER EVIDENT W:\Projects\150705\Docs\Misc\Sanitary Lifting\Soil Profiles\[Soil Profiles 201-04-07.xls]TP5-4
LEGEND-PROPOSED TP1-2 TP1-1 TP2-2 TP 2-1 TP 3-2 TP1-4 TP3-1 TP1-3 TP5-2 TP4-2 TP4-1 TP5-1 TP5-4 TP5-3 SOIL PROFILE EXHIBIT - DEMAROIS SUBDIVISION TRACT 15, COS 21 AND TRACT 14A-1, COS 38 MISSOULA COUNTY, MONTANA 1111 EAST BROADWAY MISSOULA, MONTANA 59802 TEL: 40-8-411 FAX: 40-8-7 WWW.WGMGROUP.COM
Map Unit Description: Alberton very fine sandy loam, 0 to 2 percent slopes---missoula County Area, Montana Missoula County Area, Montana 1 Alberton very fine sandy loam, 0 to 2 percent slopes Map Unit Setting National map unit symbol: 4w8w Elevation: 2,700 to 3,500 feet Mean annual precipitation: 11 to 1 inches Mean annual air temperature: 43 to 45 degrees F Frost-free period: 105 to 0 days Farmland classification: Prime farmland if irrigated Map Unit Composition Alberton and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Alberton Setting Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium Typical profile Ap - 0 to 9 inches: very fine sandy loam A - 9 to 1 inches: sandy loam Bw - 1 to inches: sandy loam BC - to 0 inches: loamy sand Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Moderate (about 7.3 inches) Interpretive groups Land capability classification (irrigated): 2c Land capability classification (nonirrigated): 3c Hydrologic Soil Group: A Ecological site: Sandy (Sy) 10-14" p.z. (R044XWMT) Hydric soil rating: No Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/20/201 Page 1 of 2
Map Unit Description: Alberton very fine sandy loam, 0 to 2 percent slopes---missoula County Area, Montana Minor Components Desmet Percent of map unit: 5 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Silty (Si) 10-14" p.z. (R044XW5MT) Hydric soil rating: No Grantsdale Percent of map unit: 5 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Silty (Si) 15-19" p.z. (R044XW4MT) Hydric soil rating: No Moiese Percent of map unit: 5 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Shallow to Gravel (SwGr) 10-14" p.z. (R044XW13MT) Hydric soil rating: No Data Source Information Soil Survey Area: Missoula County Area, Montana Survey Area Data: Version 13, Sep 3, 2014 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/20/201 Page 2 of 2
Map Unit Description: Grantsdale loam, 0 to 2 percent slopes---missoula County Area, Montana Missoula County Area, Montana 44 Grantsdale loam, 0 to 2 percent slopes Map Unit Setting National map unit symbol: 4wcb Elevation: 2,700 to 5,200 feet Mean annual precipitation: 10 to 19 inches Mean annual air temperature: 39 to 45 degrees F Frost-free period: to 0 days Farmland classification: Prime farmland if irrigated Map Unit Composition Grantsdale and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Grantsdale Setting Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Parent material: Coarse-silty over sandy and gravelly alluvium Typical profile Ap - 0 to 9 inches: loam Bw - 9 to 17 inches: loam Bk - 17 to 32 inches: loam 2C - 32 to 0 inches: very gravelly loamy sand Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about.3 inches) Interpretive groups Land capability classification (irrigated): 2c Land capability classification (nonirrigated): 3c Hydrologic Soil Group: B Ecological site: Silty (Si) 10-14" p.z. (R044XW5MT) Hydric soil rating: No Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/20/201 Page 1 of 2
Map Unit Description: Grantsdale loam, 0 to 2 percent slopes---missoula County Area, Montana Minor Components Alberton Percent of map unit: 5 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Sandy (Sy) 10-14" p.z. (R044XWMT) Hydric soil rating: No Moiese Percent of map unit: 4 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Shallow to Gravel (SwGr) 10-14" p.z. (R044XW13MT) Hydric soil rating: No Desmet Percent of map unit: 4 percent Landform: Stream terraces Down-slope shape: Linear Across-slope shape: Linear Ecological site: Silty (Si) 10-14" p.z. (R044XW5MT) Hydric soil rating: No Somewhat poorly drained soils Percent of map unit: 2 percent Ecological site: Subirrigated (Sb) 10-14" p.z. (R044XW8MT) Hydric soil rating: No Data Source Information Soil Survey Area: Missoula County Area, Montana Survey Area Data: Version 13, Sep 3, 2014 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/20/201 Page 2 of 2
FIGURE FIGURE 5 SOILS 4 SOILS TEXTURING TEXTURING START: Place approximately 25 grams soil in palm. Slowly moisten with water and knead soil to break down aggregates. Soil is at the proper consistency when plastic and moldable, like moist putty. Add dry soil to soak up water. Does soil remain in a ball when squeezed? NO YES Is soil too dry? NO YES Is soil too wet? NO Sand YES Place ball of soil between thumb and forefinger gently pushing the soil with the thumb, squeezing it upward into a ribbon. Form a ribbon of uniform thickness and width. Allow the ribbon to emerge and extend over the forefinger, breaking from its own weight. Be careful to allow clay soils enough time to fully hydrate as some clay agragates can sometimes feel like sand until they are completley hydrated. Does soil form a ribbon? YES NO Loamy Sand Does soil forms a weak ribbon less than 2.5cm (1 inch) long before breaking? NO Does soil form a medium ribbon 2.5-5 cm (1-2 inches) long before breaking? NO Does soil form a strong ribbon 5 cm (2 inches) long or longer before breaking? YES YES YES Excessively wet a small pinch of soil in palm and rub with forefinger. Sandy Loam Silt Loam YES YES YES Does soil feel very gritty? Does soil feel very smooth? NO Neither grittiness nor smoothness predominates. Sandy Clay Loam YES Silty Clay Loam YES Does soil feel very gritty? Does soil feel very smooth: NO Neither grittiness nor smoothness predominates. Sandy Clay Silty Clay YES YES Does soil feel very gritty? Does soil feel very smooth: NO NO NO YES YES NO Neither grittiness nor smoothness predominates. Loam Clay Loam Clay December 3, 2015 Page 13
September 22, 201 Hillside Slope Report Windemere Place, Missoula County, Montana Per Section 7.5.13 of the Missoula County Subdivision Regulations, a hillside slope report is required if the site proposed for subdivision has slopes of 25% or greater, unless such areas are designated as no build areas on the plat. There are no buildable areas within the proposed subdivision with slopes greater than 25% (see attached Slope Map Exhibit). The only areas on the site greater than 25% (shown in red) are within existing Big Flat Ditch along the south edge of the subdivision, which cannot be built upon, and a small area in the northwest corner of Lot 1, which is part of the existing road embankment of Big Flat Road, which also cannot be built upon. Therefore, a hillside report is not required. Prepared by: Brandon Staglund, P.E. Project Engineer WGM Group Attachments: Slope Map Exhibit
SLOPE MAP EXHIBIT WINDEMERE PLACE MISSOULA COUNTY, MONTANA 1111 EAST BROADWAY MISSOULA, MONTANA 59802 TEL: 40-8-411 FAX: 40-8-7 WWW.WGMGROUP.COM