The URL can be used to link to this page

Home My WebLink AboutH-25 MULTI-FAMILY - FDP210008 - SUBMITTAL DOCUMENTS - ROUND 1 - EROSION CONTROL LETTER/REPORT Erosion Control Report Harmony 25 Multi-Family Development Parcel No. 8603000028 Fort Collins, Colorado Date Submitted: April 6, 2021 Owner: Post Modern Development, LLC 144 Mason North Mason Street, Ste 4 Fort Collins, Colorado 80524 JD Padilla jd@postmoderndevelopment.com Developer: Harmony 25, LLC 144 Mason North Mason Street, Ste 4 Fort Collins, Colorado 80524 Jeff Jensen (970) 227-0622 jeff@jensenlaplante.com Contractor: TBD Design Engineer: Sanderson Stewart 425 West Mulberry, Suite 201 Fort Collins, CO 80526 Charles Sonnier (970) 488-0169 csonnier@sandersonstewart.com Erosion Control Administrator: TBD 2 CERTIFICATION STATEMENT: I hereby certify that this Erosion Control Report for the removal of existing fill within the floodway within Parcel No. 8603000028 was prepared by me (or under my direct supervision) in accordance with the provisions of the City of Fort Collins Stormwater Criteria for the owners thereof. _______________________________________________ Charles Joseph Sonnier, Registered Professional Engineer State of Colorado Registration No. 48403 4/7/21 3 Table of Contents I. Project Description and Nature of Construction II. Potential Pollutant Sources III. Control Measures IV. Installation and Removal Sequence of Control Measures V. Maintenance and Inspection of Requirements VI. Final Vegetation and Stability Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 1 Project No. 19059.02 I. Project Description and Nature of Construction Existing Site Location and Conditions: The subject property (Parcel No. 8603000028, approximately 38 acres) is located in the southeast corner of Harmony Road and Strauss Cabin Road in the west half of Section 3, Township 6 North, Range 68 West, latitude 40.5228, longitude 104.9983. The site is generally bounded by Strauss Cabin Road on the west, Harmony Road on the north, Harmony Gardens landscape nursery on the east and Weitzel Pond on the south. Surrounding properties include: the Arapaho Bend Natural Area and the Harmony Road Transportation Transfer Center on the north side of Harmony Road, Island Lake Marina and the Eagle View Natural Area on the south side of Kechter Road, the Chandler property (now under Nine Bridges, LLC ownership) west of Strauss Cabin Road, the Mountain Life Church and the Budurus properties located along Strauss Cabin Road further to the south. East of the property is the I-25 interstate and the Town of Timnath. The Fossil Creek Reservoir Inlet Ditch (FCRID) and the Boxelder Ditch are located along the western side of the overall site with the FCRID being further to the west. The Boxelder Ditch crosses Strauss Cabin Road and enters the site approximately 1700’ south of Harmony Road. This property is located within the Cache la Poudre watershed and City of Fort Collins Poudre River drainage basin. This project site sits within the FEMA regulated floodway and floodplain, per FEMA FIRM Maps 08069C0994F & 08069C1013F, dated December 19, 2006. The site is mostly flat to minimally sloped. Generally, runoff from the site sheet flows to the east and south to the existing floodway channel and travels south through a series of existing large inactive gravel pits that have essentially become retention ponds for stormwater. This drainage way outlets into two culverts under Kechter Road, approximately a mile south from the project site and is assumed to be the historic stormwater release location for this area. Flow then conveys south of Kechter Road and into Island Lake then flows due east under I-25 and then south east approximately a half mile to Fossil Creek Reservoir Outlet and then another half mile onto the Cache La Poudre River. According to the NRCS website, the site consists mainly of Caruso clay loam, 0 to 1 percent slope with a classification of Type C soils. Refer Appendix for soil property information. This soil type has an erodibility factor of 0.32 which suggests a moderate susceptibility to sheet and rill erosion by runoff. Currently, the Site consists of mostly vegetative ground cover with mostly shrubbery and a few trees , consisting of approximately 70% vegetative density. No impervious areas exist within the project area and there are no structures. Groundwater depth is approximately fifteen (15) feet below existing ground and no known ground contamination is present. Also, no known riparian or sensitive areas are proximate to the project site. Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 2 Project No. 19059.02 Proposed Construction Activities: The proposed project will consist of 12 new multi-family buildings with 290 total units. Proposed utility improvements will consist of storm sewer, sanitary sewer and waterline improvements. Surface improvements will include driveway, parking lot, landscaped areas and concrete sidewalk surrounding the buildings. Off-site improvements will mainly consist of a sidewalk, a driveway connection, and an emergence access connection all along the east side of Strauss Cabin Road. Approximately 16 acres of the site is anticipated to be disturbed, which includes the area of the proposed buildings and surface improvements. A summary of these areas is as follows: • Total Project Area: ±16 Acres • Total Area of Disturbance: ±16 Acres • Total Area of Staging/Storage: ±0.5 Acres • Total Areas for Hauling: N/A An existing dirt road access from Strauss Cabin Road will be utilized as the construction access. BMPs will be established prior to construction. Silt fencing will be installed around the construction limits and all silt fencing will remain in place until site is stabilized and 70% ground cover is established. No known environmental impacts to wetland, streams and/or endangered species will occur during this project. Permits used for this project will be a State Discharge Permit, a Floodplain Use Permit and a Stockpile Permit. II. Potential Pollutant Sources The following is a list of potential sources of pollutants and the associated prescribed control measures: 1. ALL DISTURBED AND STORED SOILS Yes - Approximately 14.63 acres are anticipated to be disturbed. Topsoil will be stripped and stockpiled in area along the southside of the project area. Some excavated soils will be temporarily stockpiled on site. Appropriate BMP measures, such as silt fencing, seeding and mulch will be implemented to contain pollutants and stabilize disturbed and stockpile areas. 2. VEHICLE TRACKING OF SEDIMENTS Yes - Sediment tracked onto existing pavements will receive ongoing sweeping and/or scraping and collected for haul off. Equipment that requires washing will either be washed inside the property or be loaded directly onto a trailer and washed off-site. Vehicle tracking control will be implemented to help reduce erosion and to minimize sediment from entering adjacent streets. Rock socks Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 3 Project No. 19059.02 and inlet protection shall be installed downstream within Strauss Cabin Road to intercept and filter any pollutants prior to escaping the site. 3. MANAGEMENT OF CONTAMINATED SOILS No - There are no contaminated soils anticipated on this site. 4. LOADING & UNLOADING OPERATIONS Yes - Workers will have sufficient parking within the western portion of the property just east of Strauss Cabin Road thereby minimizing the on-site through traffic. Equipment may be loaded and unloaded on-site to reduce soil transport off the site. Any loading of material will be done directly from the machine to the haul truck with appropriate containment BMP’s and clean up measures in place. 5. OUTDOOR STORAGE OF CONSTRUCTION MATERIALS, BUILDING MATERIALS, FERTILIZERS AND CHEMICALS Yes/Possibly - There are no building materials anticipated for this project. Although fertilizers may be used in the final stage of the project for stabilizing vegetation, they will not be stored onsite due to the short duration of the project. Materials that are not anticipated to generate pollutants along with on- site construction vehicles will be stored/parked in a Stabilized Staging Area located at the west of the site, approximately 600 feet from the floodway and main grading operations. 6. BULK STORAGE OF MATERIALS No - There are no bulk liquid chemicals or storage structures anticipated for this project. 7. VEHICLE AND EQUIPMENT MAINTENANCE AND FUELING Yes/Possibly - It is the intention that most, if not all, equipment requiring repair shall be loaded onto a trailer and repaired off-site in a proper facility. If necessary, all on-site equipment repair shall be performed within the Stabilized Storage Area where potential chemical discharge will be contained and hauled off. 8. SIGNIFICANT DUST OR PARTICULATE GENERATION PROCESSES Yes - This project is not anticipated to generate much atmospheric pollution, however, water trucks will be utilized, as needed, and vehicle speeds will be limited to minimize dust emissions. Seeding of the disturbed area shall be implemented upon completion of the improvements to that area. If needed, silt Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 4 Project No. 19059.02 fence shall be installed as a wind break. The project will follow all requirements described in the Fugitive Dust Control Ordinance No. 004, 2016, Section 12-150 through 12-160. 9. ROUTINE MAINTENANCE ACTIVITIES INVOLVING FERILIZERS, PESTICIDES, DETERGENTS, FUELS, SOLVENTS, OILS, ETC. Yes/Possibly - No routine maintenance is anticipated. If it’s needed, however, it is the intention that equipment shall be maintenance off-site in a proper facility. Any emergency on-site equipment maintenance shall be performed within the Stabilized Storage Area at the west end of the site. Although the other referenced chemicals may be used during the project, they will not be stored onsite due to the short duration of the project. 10. ON-SITE WASTE MANAGEMENT PRACTICES Yes - Any solid waste disposal will be collected and hauled off-site daily. Any waste types to be disposed of at the end of each day will be temporarily stored within the Stabilized Storage Area at the west end of the property. 11. CONCRETE TRUCK/EQUIPMENT WASHING Yes – A concrete washout area is located near the construction access and appropriate containment BMP’s and clean up measures will be utilized. 12. DEDICATED ASPHALT AND CONCRETE BATCH PLANTS No dedicated batch plants are proposed. 13. NON-INDUSTRIAL WASTE SOURCES Yes - A portable toilet will be utilized for non-industrial waste on-site. These receptacles will be located a minimum of 50 feet from any inlet structure and watercourse. Generated worker trash will be collected and transported off-site daily. 14. SAW CUTTING AND GRINDING Yes - Saw cutting and grinding will be performed along existing Strauss Cabin Road for access improvements to the project site. Appropriate downstream BMPs along curb lines and inlet protection will be implemented along with street sweeping. Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 5 Project No. 19059.02 15. OTHER NON-STORMWATER DISCHARGES No - No other discharges, such as dewatering and/or wash water is anticipated for this project. 16. OTHER POTENTIAL SPILL SOURCES No - No other procedures or areas of potential spill sources are anticipated. III. Control Measures Installation and maintenance of temporary construction and permanent BMPs (structural and non-structural) shall be performed in accordance with the detail specification shown on the Erosion Control Detail Sheets in the H-25 Multi Family Development Final Plan Set and the specifications contained within the Urban Storm Drainage Criteria Manual, Volume 3, Chapter 6 & 7. Structural Practices: 1. Silt Fencing – Silt fencing will be utilized as part of perimeter controls to prevent sediment from leaving the project site. Silt fencing will be used around the construction limits and the area to receive earthwork. 2. Rock/curb Socks – Rock socks shall be installed along the curb line of Strauss Cabin Road, between the access to the project site and the existing downstream curb inlet, to capture potential sediment tracked within the roadway. 3. Inlet Protection – Inlet protection shall be implemented to protect the installed inlets on site. Inlet protection will also be utilized on inlets downstream in Strauss Cabin Road from potential sediment that is tracked within the roadway. 4. Stabilized Staging Area – This BMP will be used to contain any on-site construction parking, portable toilet and any non-pollutant generating materials. This will be located toward the west end of the property and proximate to the access off of Strauss Cabin Road and adjacent to the existing dirt road within the property. 5. Vehicle Tracking Control – A vehicle tracking control pad shall be provided at the entrance of the site to minimize the tracking of mud and sediment onto the adjacent paved surfaces. 6. Stockpile Management – The stockpiled material will be stabilized through this BMP utilizing silt fencing to contain potential sediment transport and stabilize the material through seeding and mulching. Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 6 Project No. 19059.02 Non-Structural Practices: 1. Permanent Seeding –Permanent seeding will be used to re-establish vegetation within the graded areas and stabilization of the stockpiled material. See seeding instructions below. 2. Mulch – Mulch may be used, as needed, to assist in the taking of the seed by protecting the seedbed and stabilizing the soil by increasing infiltration and reducing runoff. Utilize hydromulch on graded 4H:1V or steeper slopes after seeding. Refer to Section VI of this report. 3. Street Sweeping – Strauss Cabin Road and Harmony Road shall be kept free of sediment that has been tracked onto it through construction activities. Sweeping or vacuuming should be conducted when there is noticeable sediment accumulation on the roadway, adjacent to and surrounding the construction site. IV. Installation and Removal Sequence of Control Measures The anticipated construction dates are as follows: • Approximate Start Date: November 1, 2021 • Approximate Completion Date: September 1, 2022 • Final Stabilization Anticipated By: November 1, 2022 The following sequence of construction, land disturbing activities, and BMP implementation are anticipated: 1. Obtain and ensure all necessary permits are in place. 2. Mobilization and perimeter erosion control installation: a. Install Rock Socks and Inlet Protection within Strauss Cabin Road. b. Install Vehicle Tracking Control. c. Install Stabilized Staging Area with Portable Toilet. d. Perimeter Silt Fencing to be installed around areas to be graded and limits of construction area. 3. Construction Staking and Earthwork: a. Perform construction staking. b. Perform grubbing and stripping of topsoil. c. Perform earthwork, grading and stockpiling. d. Stockpile topsoil and stabilize. 4. Install Utilities, Pavement and Remaining Improvements: a. Excavation for roadway subgrades and foundations b. Stabilize any excess stockpiled material. Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 7 Project No. 19059.02 5. Stabilize a. Install silt fence around stockpiled material. b. Seed and mulch newly graded areas, stockpiled material and disturbed areas. 6. Removal of Temporary BMPs a. Remove all BMPs except for the silt fencing. b. Remove silt fencing upon achieving 70% minimum vegetated ground cover. Re-seeding and additional mulch may be necessary along with other methods implemented to establish vegetation such as erosion control blanket and soil binders. All temporary perimeter controls necessary to prevent sediment and/or pollutants from leaving the site are to be installed prior to the commencement of construction activities. V. Maintenance and Inspection of Requirements BMP Inspections: Routine and post-storm inspections of BMPs are essential to identify maintenance necessary for the BMPs to remain in effective operating conditions. The frequency of inspections is typically influenced by multiple factors including the weather, the phase of construction, activities on site, and the types of BMPs. In Colorado, the CDPS General Permit requires documented inspections on a biweekly basis and within 24 hours of a storm event, with some limited, temporary exceptions for inactive sites. UDFCD recommends spot-checking BMPs every workday. This is typically reasonable to achieve and can help to ensure that the BMPs remain in good working condition. When the site or portions of the site are awaiting final stabilization (e.g., vegetative cover), where construction is essentially complete, the recommended frequency of inspection is at least once every month. Be sure that this change is documented and in accordance with relevant permit requirements prior to reducing the inspection schedule. Maintenance: Proactive maintenance is fundamental to effective BMP performance. Rather than maintaining the BMP in a reactive manner following failure, provide proactive maintenance that may help to reduce the likelihood of failure. The types and frequencies of maintenance are BMP-specific. Maintain BMPs so that they function as intended. This includes removing accumulated sediment before it limits the effectiveness of the BMP. Identify needed maintenance activities during site inspections or during general observations of site conditions. Where Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 8 Project No. 19059.02 BMPs have failed, repairs or changes should be initiated as soon as practical, to minimize the discharge of pollutants. Where the BMPs specified in the SWMP are not functioning effectively at the site, modifications should be made that may include different or additional layers of BMPs. When new BMPs are installed or BMPs are replaced, check the permit for documentation requirements. This may require communication with the owner and/or engineer and, at a minimum, should be documented in the inspection and maintenance records (logbook). The following is an abbreviated summary regarding inspection and maintenance for BMPs proposed for this project (also refer to erosion control details in the construction plans): 1. Silt Fencing – Inspect each work day and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Repair or replacement shall occur immediately upon discovery of any failures. Upstream accumulated sediment (at approximately 6-inches) shall be removed, as needed to maintain the functionality of the BMP. 2. Construction Fencing – Inspect fences daily for damage and repair or replace as necessary. Fencing should be tight and not slumping. Post should be standing straight and secure in the ground. 3. Rock/curb Socks - Inspect each work day and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Rock socks should be replaced if heavily soiled or damaged beyond repair. Accumulated upstream sediment should be removed when sediment is approximately ½ of the rock sock height. 4. Inlet Protection - Inspect each work day and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Accumulated upstream sediment should be removed when sediment is approximately ½ of the rock sock height in front of inlet opening. 5. Staked Sediment Control Logs – Logs shall be staked along the back of the installed curb to help prevent sediment from running off the disturbed ground onto the paved roads and gutters. Sediment buildup shall be removed as needed. Sediment logs will be replaced and reinstalled to maintain their effectiveness. 6. Stabilized Staging Area – Inspect each work day and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Maintain them in effective operating condition with a stable surface cover of gravel, repair perimeter silt fence as necessary and follow good housekeeping practices. Rock shall be reapplied or Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 9 Project No. 19059.02 regraded as necessary if rutting or underlying subgrade becomes exposed. 7. Vehicle Tracking Control – Inspect each work day and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Rock shall be reapplied or regraded as necessary to maintain a consistent depth. 8. Concrete Washout Area – The washout area shall be installed before concrete placement begin. Signage shall be posted that clearly designates the washout area. Concrete waste shall be removed and disposed of as needed. 9. Stockpile Management – Inspect each workday and as soon as possible (always within 24-hours) following a storm that causes surface erosion. Repair perimeter silt fence as necessary. If perimeter protection needs to be removed to access stockpile, replace perimeter controls by end of workday. VI. Final Vegetation and Stability Usable stripped topsoil will be re-distributed over the exposed dirt in areas where fill was removed and areas of grading. Areas to receive seeding and mulching per the seeding instructions below shall be the following: • Exposed ground where construction activities are completed. • Stockpiled material for 60 days or more. • Other disturbed bare ground areas such as in the removed Stabilized Staging Area and areas that received construction traffic and general operations. Refer to the Final Stabilization and Project Completion notes on Sheet No. 2 of the construction plans associated with this report. Seeding Instructions: Per the City of Fort Collins Land Use Code, Section 12-132, Soil shall be thoroughly loosened to a depth of not less than eight (8) inches and soil amendment shall be thoroughly incorporated into the soil to a depth of at least six (6) inches by tilling, discing, or other suitable method, at a rate of at least three (3) cubic yards of soil amendment per one thousand (1,000) square feet of area to be seeded, unless at least four (4) inches of loose top soil has been placed on the area after completion of construction activity on top of not less than four (4) inches of loosened subgrade soils. Seed shall be applied to a depth of ¼” to ½” and conform to the standards outlined in the seeding notes and details on Sheet Nos. 2 and 4 of the construction plans associated with this report. Sanderson Stewart April 2021 Harmony 25 Parcel No. 8603000028 pg. 10 Project No. 19059.02 Seeded areas to be mulched and crimped per Note No. 55 on Sheet No. 2 of the construction plans associated with this report. Crimped mulch shall be applied to a depth of 2” to 3”. Utilize hydromulch application on graded 4H:1V or steeper slopes after seeding. At the point the vegetation has reached 70% density and confirmed by the City of Fort Collins, the warranty period for Erosion Control will begin and any temporary Control Measures will be removed. References 1. City of Fort Collins, December 2018, Fort Collins Stormwater Criteria Manual. 2. City of Fort Collins, December 2019, Fort Collins City Land Use Code. 3. Mile High Flood District, 2001 (November 2010 with some sections updated April 2018), Urban Storm Drainage Criteria Manual, Volume 3, Stormwater Quality. 4. United States Department of Agriculture Natural Resources Conservation Service; Web Soil Survey; accessed on-line September 2019. 5. Federal Emergency Management Agency; FEMA Flood Map Service Center; accessed on- line September 2019. APPENDIX 1. NRCS Soils Data 2. Erosion Control Plan 3. Erosion Control Notes 4. Erosion Control Details (Escrow/Security Calculation Spreadsheet to be provided upon approval of this report and the associated Erosion Control Plan) +\GURORJLF6RLO*URXS²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²1RY7KHRUWKRSKRWRRURWKHUEDVHPDSRQZKLFKWKHVRLOOLQHVZHUHFRPSLOHGDQGGLJLWL]HGSUREDEO\GLIIHUVIURPWKHEDFNJURXQGLPDJHU\GLVSOD\HGRQWKHVHPDSV$VDUHVXOWVRPHPLQRUVKLIWLQJRIPDSXQLWERXQGDULHVPD\EHHYLGHQW+\GURORJLF6RLO*URXS²/DULPHU&RXQW\$UHD&RORUDGR2'3/DQG8VHV$UHD2QO\1DWXUDO5HVRXUFHV&RQVHUYDWLRQ6HUYLFH:HE6RLO6XUYH\1DWLRQDO&RRSHUDWLYH6RLO6XUYH\3DJHRI +\GURORJLF6RLO*URXS +\GURORJLF6RLO*URXS²6XPPDU\E\0DS8QLW²/DULPHU&RXQW\$UHD&RORUDGR&2 0DSXQLWV\PERO 0DSXQLWQDPH 5DWLQJ $FUHVLQ$2,3HUFHQWRI$2, &DUXVRFOD\ORDPWR SHUFHQWVORSH & /DULPJUDYHOO\VDQG\ ORDPWRSHUFHQW VORSHV % /RYHODQGFOD\ORDPWR SHUFHQWVORSHV & 3DROLILQHVDQG\ORDP WRSHUFHQWVORSHV % 6WRQHKDPORDPWR SHUFHQWVORSHV % 6WRQHKDPORDPWR SHUFHQWVORSHV % 7DEOH0RXQWDLQORDP WRSHUFHQWVORSHV % 7RWDOVIRU$UHDRI,QWHUHVW +\GURORJLF6RLO*URXS²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²/DULPHU&RXQW\$UHD&RORUDGR 2'3/DQG8VHV$UHD2QO\ 1DWXUDO5HVRXUFHV &RQVHUYDWLRQ6HUYLFH :HE6RLO6XUYH\ 1DWLRQDO&RRSHUDWLYH6RLO6XUYH\ 3DJHRI Engineering Properties This table gives the engineering classifications and the range of engineering properties for the layers of each soil in the survey area. Hydrologic soil group is a group of soils having similar runoff potential under similar storm and cover conditions. The criteria for determining Hydrologic soil group is found in the National Engineering Handbook, Chapter 7 issued May 2007(http://directives.sc.egov.usda.gov/OpenNonWebContent.aspx? content=17757.wba). Listing HSGs by soil map unit component and not by soil series is a new concept for the engineers. Past engineering references contained lists of HSGs by soil series. Soil series are continually being defined and redefined, and the list of soil series names changes so frequently as to make the task of maintaining a single national list virtually impossible. Therefore, the criteria is now used to calculate the HSG using the component soil properties and no such national series lists will be maintained. All such references are obsolete and their use should be discontinued. Soil properties that influence runoff potential are those that influence the minimum rate of infiltration for a bare soil after prolonged wetting and when not frozen. These properties are depth to a seasonal high water table, saturated hydraulic conductivity after prolonged wetting, and depth to a layer with a very slow water transmission rate. Changes in soil properties caused by land management or climate changes also cause the hydrologic soil group to change. The influence of ground cover is treated independently. There are four hydrologic soil groups, A, B, C, and D, and three dual groups, A/D, B/D, and C/D. In the dual groups, the first letter is for drained areas and the second letter is for undrained areas. The four hydrologic soil groups are described in the following paragraphs: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. Depth to the upper and lower boundaries of each layer is indicated. Engineering Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 1 of 5 Texture is given in the standard terms used by the U.S. Department of Agriculture. These terms are defined according to percentages of sand, silt, and clay in the fraction of the soil that is less than 2 millimeters in diameter. "Loam," for example, is soil that is 7 to 27 percent clay, 28 to 50 percent silt, and less than 52 percent sand. If the content of particles coarser than sand is 15 percent or more, an appropriate modifier is added, for example, "gravelly." Classification of the soils is determined according to the Unified soil classification system (ASTM, 2005) and the system adopted by the American Association of State Highway and Transportation Officials (AASHTO, 2004). The Unified system classifies soils according to properties that affect their use as construction material. Soils are classified according to particle-size distribution of the fraction less than 3 inches in diameter and according to plasticity index, liquid limit, and organic matter content. Sandy and gravelly soils are identified as GW, GP, GM, GC, SW, SP, SM, and SC; silty and clayey soils as ML, CL, OL, MH, CH, and OH; and highly organic soils as PT. Soils exhibiting engineering properties of two groups can have a dual classification, for example, CL-ML. The AASHTO system classifies soils according to those properties that affect roadway construction and maintenance. In this system, the fraction of a mineral soil that is less than 3 inches in diameter is classified in one of seven groups from A-1 through A-7 on the basis of particle-size distribution, liquid limit, and plasticity index. Soils in group A-1 are coarse grained and low in content of fines (silt and clay). At the other extreme, soils in group A-7 are fine grained. Highly organic soils are classified in group A-8 on the basis of visual inspection. If laboratory data are available, the A-1, A-2, and A-7 groups are further classified as A-1-a, A-1-b, A-2-4, A-2-5, A-2-6, A-2-7, A-7-5, or A-7-6. As an additional refinement, the suitability of a soil as subgrade material can be indicated by a group index number. Group index numbers range from 0 for the best subgrade material to 20 or higher for the poorest. Percentage of rock fragments larger than 10 inches in diameter and 3 to 10 inches in diameter are indicated as a percentage of the total soil on a dry-weight basis. The percentages are estimates determined mainly by converting volume percentage in the field to weight percentage. Three values are provided to identify the expected Low (L), Representative Value (R), and High (H). Percentage (of soil particles) passing designated sieves is the percentage of the soil fraction less than 3 inches in diameter based on an ovendry weight. The sieves, numbers 4, 10, 40, and 200 (USA Standard Series), have openings of 4.76, 2.00, 0.420, and 0.074 millimeters, respectively. Estimates are based on laboratory tests of soils sampled in the survey area and in nearby areas and on estimates made in the field. Three values are provided to identify the expected Low (L), Representative Value (R), and High (H). Liquid limit and plasticity index (Atterberg limits) indicate the plasticity characteristics of a soil. The estimates are based on test data from the survey area or from nearby areas and on field examination. Three values are provided to identify the expected Low (L), Representative Value (R), and High (H). References: American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. Engineering Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 2 of 5 Report—Engineering Properties Absence of an entry indicates that the data were not estimated. The asterisk '*' denotes the representative texture; other possible textures follow the dash. The criteria for determining the hydrologic soil group for individual soil components is found in the National Engineering Handbook, Chapter 7 issued May 2007(http://directives.sc.egov.usda.gov/ OpenNonWebContent.aspx?content=17757.wba). Three values are provided to identify the expected Low (L), Representative Value (R), and High (H). Engineering Properties–Larimer County Area, Colorado Map unit symbol and soil name Pct. of map unit Hydrolo gic group Depth USDA texture Classification Pct Fragments Percentage passing sieve number—Liquid limit Plasticit y index Unified AASHTO >10 inches 3-10 inches 4 10 40 200 In L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H L-R-H 5—Aquepts, loamy Aquepts 80 A/D 0-60 Variable —————————— 22—Caruso clay loam, 0 to 1 percent slope Caruso 85 D 0-35 Clay loam CL A-6 0- 0- 0 0- 0- 0 95-98-1 00 95-98-1 00 90-93- 95 70-75- 80 30-33 -35 10-13-1 5 35-44 Fine sandy loam, sandy loam SC-SM, SM A-2, A-4 0- 3- 5 0- 3- 5 85-90- 95 65-75- 85 40-60- 80 25-40- 55 20-23 -25 NP-3 -5 44-60 Sand, gravelly sand SP-SM, SW-SM A-1 0- 3- 5 0- 5- 10 60-75- 90 55-58- 60 30-38- 45 5-10- 15 —NP 64—Loveland clay loam, 0 to 1 percent slopes Loveland 90 C 0-15 Clay loam CL A-6 0- 3- 5 0- 3- 5 90-95-1 00 85-93-1 00 80-85- 90 60-70- 80 30-35 -40 10-15-2 0 15-32 Clay loam, silty clay loam, loam CL, CL- ML A-4, A-6 0- 3- 5 0- 3- 5 90-95-1 00 85-93-1 00 80-85- 90 50-68- 85 25-30 -35 5-10-15 32-60 Very gravelly sand, gravelly sand, gravelly coarse sand GP, SP A-1 0- 3- 5 0- 5- 10 40-60- 80 30-50- 70 20-30- 40 0- 3- 5 —NP Engineering Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 4 of 5 Physical Soil Properties This table shows estimates of some physical characteristics and features that affect soil behavior. These estimates are given for the layers of each soil in the survey area. The estimates are based on field observations and on test data for these and similar soils. Depth to the upper and lower boundaries of each layer is indicated. Particle size is the effective diameter of a soil particle as measured by sedimentation, sieving, or micrometric methods. Particle sizes are expressed as classes with specific effective diameter class limits. The broad classes are sand, silt, and clay, ranging from the larger to the smaller. Sand as a soil separate consists of mineral soil particles that are 0.05 millimeter to 2 millimeters in diameter. In this table, the estimated sand content of each soil layer is given as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. Silt as a soil separate consists of mineral soil particles that are 0.002 to 0.05 millimeter in diameter. In this table, the estimated silt content of each soil layer is given as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. Clay as a soil separate consists of mineral soil particles that are less than 0.002 millimeter in diameter. In this table, the estimated clay content of each soil layer is given as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. The content of sand, silt, and clay affects the physical behavior of a soil. Particle size is important for engineering and agronomic interpretations, for determination of soil hydrologic qualities, and for soil classification. The amount and kind of clay affect the fertility and physical condition of the soil and the ability of the soil to adsorb cations and to retain moisture. They influence shrink-swell potential, saturated hydraulic conductivity (Ksat), plasticity, the ease of soil dispersion, and other soil properties. The amount and kind of clay in a soil also affect tillage and earthmoving operations. Moist bulk density is the weight of soil (ovendry) per unit volume. Volume is measured when the soil is at field moisture capacity, that is, the moisture content at 1/3- or 1/10-bar (33kPa or 10kPa) moisture tension. Weight is determined after the soil is dried at 105 degrees C. In the table, the estimated moist bulk density of each soil horizon is expressed in grams per cubic centimeter of soil material that is less than 2 millimeters in diameter. Bulk density data are used to compute linear extensibility, shrink-swell potential, available water capacity, total pore space, and other soil properties. The moist bulk density of a soil indicates the pore space available for water and roots. Depending on soil texture, a bulk density of more than 1.4 can restrict water storage and root penetration. Moist bulk density is influenced by texture, kind of clay, content of organic matter, and soil structure. Physical Soil Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 1 of 6 Saturated hydraulic conductivity (Ksat) refers to the ease with which pores in a saturated soil transmit water. The estimates in the table are expressed in terms of micrometers per second. They are based on soil characteristics observed in the field, particularly structure, porosity, and texture. Saturated hydraulic conductivity (Ksat) is considered in the design of soil drainage systems and septic tank absorption fields. Available water capacity refers to the quantity of water that the soil is capable of storing for use by plants. The capacity for water storage is given in inches of water per inch of soil for each soil layer. The capacity varies, depending on soil properties that affect retention of water. The most important properties are the content of organic matter, soil texture, bulk density, and soil structure. Available water capacity is an important factor in the choice of plants or crops to be grown and in the design and management of irrigation systems. Available water capacity is not an estimate of the quantity of water actually available to plants at any given time. Linear extensibility refers to the change in length of an unconfined clod as moisture content is decreased from a moist to a dry state. It is an expression of the volume change between the water content of the clod at 1/3- or 1/10-bar tension (33kPa or 10kPa tension) and oven dryness. The volume change is reported in the table as percent change for the whole soil. The amount and type of clay minerals in the soil influence volume change. Linear extensibility is used to determine the shrink-swell potential of soils. The shrink-swell potential is low if the soil has a linear extensibility of less than 3 percent; moderate if 3 to 6 percent; high if 6 to 9 percent; and very high if more than 9 percent. If the linear extensibility is more than 3, shrinking and swelling can cause damage to buildings, roads, and other structures and to plant roots. Special design commonly is needed. Organic matter is the plant and animal residue in the soil at various stages of decomposition. In this table, the estimated content of organic matter is expressed as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. The content of organic matter in a soil can be maintained by returning crop residue to the soil. Organic matter has a positive effect on available water capacity, water infiltration, soil organism activity, and tilth. It is a source of nitrogen and other nutrients for crops and soil organisms. Erosion factors are shown in the table as the K factor (Kw and Kf) and the T factor. Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and Ksat. Values of K range from 0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water. Erosion factor Kw indicates the erodibility of the whole soil. The estimates are modified by the presence of rock fragments. Erosion factor Kf indicates the erodibility of the fine-earth fraction, or the material less than 2 millimeters in size. Physical Soil Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 2 of 6 Erosion factor T is an estimate of the maximum average annual rate of soil erosion by wind and/or water that can occur without affecting crop productivity over a sustained period. The rate is in tons per acre per year. Wind erodibility groups are made up of soils that have similar properties affecting their susceptibility to wind erosion in cultivated areas. The soils assigned to group 1 are the most susceptible to wind erosion, and those assigned to group 8 are the least susceptible. The groups are described in the "National Soil Survey Handbook." Wind erodibility index is a numerical value indicating the susceptibility of soil to wind erosion, or the tons per acre per year that can be expected to be lost to wind erosion. There is a close correlation between wind erosion and the texture of the surface layer, the size and durability of surface clods, rock fragments, organic matter, and a calcareous reaction. Soil moisture and frozen soil layers also influence wind erosion. Reference: United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. (http://soils.usda.gov) Physical Soil Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 3 of 6 Report—Physical Soil Properties Three values are provided to identify the expected Low (L), Representative Value (R), and High (H). Physical Soil Properties–Larimer County Area, Colorado Map symbol and soil name Depth Sand Silt Clay Moist bulk density Saturated hydraulic conductivity Available water capacity Linear extensibility Organic matter Erosion factors Wind erodibility group Wind erodibility index Kw Kf T In Pct Pct Pct g/cc micro m/sec In/In Pct Pct 5—Aquepts, loamy Aquepts 0-60 ————4.23-364.61-70 5.00 ———5 22—Caruso clay loam, 0 to 1 percent slope Caruso 0-35 -35--34-27-31- 35 1.25-1.30 -1.35 0.42-0.92-1.41 0.18-0.20-0. 21 0.0- 1.5- 2.9 1.0- 1.5- 2.0 .32 .32 4 6 48 35-44 -64--27-5- 9- 13 1.35-1.43 -1.50 14.11-28.22-42. 34 0.06-0.10-0. 13 0.0- 1.5- 2.9 0.5- 0.8- 1.0 .32 .32 44-60 -97-- 2-0- 2- 3 1.45-1.53 -1.60 141.14-423.07- 705.00 0.02-0.03-0. 04 0.0- 1.5- 2.9 0.0- 0.3- 0.5 .02 .05 64—Loveland clay loam, 0 to 1 percent slopes Loveland 0-15 -33--32-30-35- 40 1.20-1.23 -1.25 1.41-2.82-4.23 0.18-0.19-0. 20 3.0- 4.5- 5.9 1.0- 2.0- 3.0 .20 .20 3 6 48 15-32 -35--38-18-27- 35 1.35-1.40 -1.45 4.23-9.17-14.11 0.18-0.19-0. 20 0.0- 1.5- 2.9 1.0- 1.5- 2.0 .32 .32 32-60 -96-- 2-0- 3- 5 1.55-1.60 -1.65 141.14-423.07- 705.00 0.03-0.05-0. 06 0.0- 1.5- 2.9 0.0- 0.3- 0.5 .02 .05 Physical Soil Properties---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 4 of 6 RUSLE2 Related Attributes This report summarizes those soil attributes used by the Revised Universal Soil Loss Equation Version 2 (RUSLE2) for the map units in the selected area. The report includes the map unit symbol, the component name, and the percent of the component in the map unit. Soil property data for each map unit component include the hydrologic soil group, erosion factor Kf for the surface horizon, erosion factor T, and the representative percentage of sand, silt, and clay in the mineral surface horizon. Missing surface data may indicate the presence of an organic layer. Report—RUSLE2 Related Attributes Soil properties and interpretations for erosion runoff calculations. The surface mineral horizon properties are displayed or the first mineral horizon below an organic surface horizon. Organic horizons are not displayed. RUSLE2 Related Attributes–Larimer County Area, Colorado Map symbol and soil name Pct. of map unit Slope length (ft) Hydrologic group Kf T factor Representative value % Sand % Silt % Clay 22—Caruso clay loam, 0 to 1 percent slope Caruso 85 —D .32 4 35.4 33.6 31.0 64—Loveland clay loam, 0 to 1 percent slopes Loveland 90 —C .20 3 33.3 31.7 35.0 81—Paoli fine sandy loam, 0 to 1 percent slopes Paoli 85 —A .15 5 65.4 19.6 15.0 103—Stoneham loam, 5 to 9 percent slopes Stoneham 85 —B .28 5 41.6 37.4 21.0 105—Table Mountain loam, 0 to 1 percent slopes Table Mountain 85 —B .37 5 44.3 40.7 15.0 Data Source Information Soil Survey Area: Larimer County Area, Colorado Survey Area Data: Version 14, Sep 13, 2019 RUSLE2 Related Attributes---Larimer County Area, Colorado Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/14/2020 Page 1 of 1 FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONHARMONY & STRAUSS CABIN ROADEROSION CONTROL NOTESH-25 MULTI FAMILY DEVELOPMENT FORT COLLINS, COC7.1 CJS19059.02_DETAIL_PROD.DWGRS/EB/VJG2/19/201ST PDP SUBMITTAL7/01/209/30/2010/26/204/07/21--2ND PDP SUBMITTAL3RD PDP SUBMITTAL4TH PDP SUBMITTAL1ST FDP SUBMITTAL----19059.02“” “” CITY OF FORT COLLINS, COLORADO UTILITY PLAN APPROVAL APPROVED: CHECKED BY: CHECKED BY: CHECKED BY: CHECKED BY: CITY ENGINEER DATE STORMWATER UTILITY DATE PARKS & RECREATION DATE TRAFFIC ENGINEER DATE ENVIRONMENTAL PLANNER DATE FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONHARMONY & STRAUSS CABIN ROADEROSION CONTROL DETAILSH-25 MULTI FAMILY DEVELOPMENT FORT COLLINS, COC7.2 CJS19059.02_DETAIL_PROD.DWGRS/EB/VJG2/19/201ST PDP SUBMITTAL7/01/209/30/2010/26/204/07/21--2ND PDP SUBMITTAL3RD PDP SUBMITTAL4TH PDP SUBMITTAL1ST FDP SUBMITTAL----19059.02CITY OF FORT COLLINS, COLORADO UTILITY PLAN APPROVAL APPROVED: CHECKED BY: CHECKED BY: CHECKED BY: CHECKED BY: CITY ENGINEER DATE STORMWATER UTILITY DATE PARKS & RECREATION DATE TRAFFIC ENGINEER DATE ENVIRONMENTAL PLANNER DATE FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONHARMONY & STRAUSS CABIN ROADEROSION CONTROL DETAILSH-25 MULTI FAMILY DEVELOPMENT FORT COLLINS, COC7.3 CJS19059.02_DETAIL_PROD.DWGRS/EB/VJG2/19/201ST PDP SUBMITTAL7/01/209/30/2010/26/204/07/21--2ND PDP SUBMITTAL3RD PDP SUBMITTAL4TH PDP SUBMITTAL1ST FDP SUBMITTAL----19059.02CITY OF FORT COLLINS, COLORADO UTILITY PLAN APPROVAL APPROVED: CHECKED BY: CHECKED BY: CHECKED BY: CHECKED BY: CITY ENGINEER DATE STORMWATER UTILITY DATE PARKS & RECREATION DATE TRAFFIC ENGINEER DATE ENVIRONMENTAL PLANNER DATE FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONHARMONY & STRAUSS CABIN ROADEROSION CONTROL DETAILSH-25 MULTI FAMILY DEVELOPMENT FORT COLLINS, COC7.4 CJS19059.02_DETAIL_PROD.DWGRS/EB/VJG2/19/201ST PDP SUBMITTAL7/01/209/30/2010/26/204/07/21--2ND PDP SUBMITTAL3RD PDP SUBMITTAL4TH PDP SUBMITTAL1ST FDP SUBMITTAL----19059.02CITY OF FORT COLLINS, COLORADO UTILITY PLAN APPROVAL APPROVED: CHECKED BY: CHECKED BY: CHECKED BY: CHECKED BY: CITY ENGINEER DATE STORMWATER UTILITY DATE PARKS & RECREATION DATE TRAFFIC ENGINEER DATE ENVIRONMENTAL PLANNER DATE