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SWMP Report_TIMBERLINE MF_RD3
TIMBERLINE HOUSING STORMWATER MANAGEMENT REPORT CITY OF FORT COLLINS, COLORADO Martin/Martin, Inc. Project No.: 20.0336 April 7, 2022 Owner: TETRAD PROPERTY GROUP 1730 SOUTH COLLEGE AVENUE, UNIT #200 FORT COLLINS, COLORADO 80525 970.658.4312 Prepared By: MARTIN/MARTIN, INC. 12499 WEST COLFAX AVENUE LAKEWOOD, COLORADO 80215 303.431.6100 Principal-in-Charge: Scott E. Paling, PE Project Manager: Melyssa C. Hartzell, PE Project Engineer: Tom Ogren, EIT II Developer: SAUNDERS HEATH 1212 RIVERSIDE AVENUE, SUITE 130 FORT COLLINS, CO 80524 970.221.4195 Contractor: SAUNDERS HEATH 1212 RIVERSIDE AVENUE, SUITE 130 FORT COLLINS, CO 80524 970.221.4195 SWMP Administrator: SAUNDERS HEATH 1212 RIVERSIDE AVENUE, SUITE 130 FORT COLLINS, CO 80524 970.221.4195 ENGINEER'S STATEMENT I hereby certify that this Construction Activities Stormwater Management Plan for the Timberlines Housing Project was prepared by me (or under my direct supervision) in accordance with the provisions of the City of Fort Collins Stormwater Criteria Manual. I understand that the City of Fort Collins does not and will not assume liability for drainage facilities design. _____________________________________________________ Scott E. Paling, P.E. Registered Professional Engineer State of Colorado PE No. 37116 TABLE OF CONTENTS I. OVERVIEW...................................................................................................................................................1 II. PROJECT DESCRIPTION AND NATURE OF CONSTRUCTION.........................................................................1 A. Site Location............................................................................................................................................1 B. Existing Site Condition.............................................................................................................................2 C. Proposed Construction Activities............................................................................................................3 III. POTENTIAL POLLUTANT SOURCES ..............................................................................................................3 A. All Disturbed and Stored Soils.................................................................................................................4 B. Vehicle Tracking of Sediments................................................................................................................4 C. Management of Contaminated Soils.......................................................................................................4 D. Loading and Unloading Operations.........................................................................................................5 E. Outdoor Storage of Construction Site Materials, Building Materials, Fertilizers, and Chemicals...........5 F. Bulk Storage of Materials........................................................................................................................5 G. Vehicle and Maintenance and Fueling....................................................................................................5 H. Significant Dust or Particulate Generating Processes.............................................................................6 I. Routine Maintenance Activities Involving Fertilizers, Pesticides, Detergents, Fuels, Solvents, and Oils 6 J. On-Site Waste Management Practices ...................................................................................................6 K. Concrete Truck/Equipment Washing......................................................................................................6 L. Dedicated Asphalt and Concrete Batch Plants........................................................................................6 M. Non-Industrial Waste Sources such as Worker Trash and Portable Toilets............................................7 N. Saw Cutting and Grinding........................................................................................................................7 IV. CONSTRUCTION CONTROL MEASURES.......................................................................................................7 V. INSTALLATION AND REMOVAL SEQUENCE OF CONSTRUCTION MEASURES ............................................11 VI. MAINTENANCE AND INSPECTION REQUIREMENTS..................................................................................11 VII. FINAL VEGETATION AND STABILIZATION..................................................................................................12 REFERENCES......................................................................................................................................................13 APPENDICES Appendix A – Vicinity Map Appendix B - FIRMette Appendix C – NRCS Soil Report Appendix D – Erosion Control Plans and BMP Information P a g e 1 | 12 I. OVERVIEW This report represents a Stormwater Management Plan (SWMP) for the proposed Timberline Housing project (hereafter referred to as “PROJECT”). This plan was prepared based upon the regulatory requirements and guidelines set forth by the Colorado Department of Public Health and Environment Water Quality Control Division – Stormwater Program’s “Stormwater Management Plan Preparation Guidance” January 2021 revision; the “Urban Storm Drainage Criteria Manual – Volumes 1-3” current revisions; and the “Fort Collins Stormwater Criteria Manual” December 2018 revision. This report identifies potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with construction. Furthermore, this report describes the practices to be used to reduce, or possibly eliminate, these potential pollutants from impacting the quality of water. The SWMP shall be completed and implemented by the time construction activities begin until final stabilization. The SWMP shall be revised as necessary during construction activities so that it accurately reflects the conditions and current practices found on-site as construction progresses. A copy of the current updated SWMP shall be kept on- site at all times and available for review by all jurisdictions having authority over stormwater discharge from the project site. This report puts forth recommendations for Best Management Practices (BMPs) and provides a description and/or detailed drawings of how these practices are to be installed, implemented and maintained. The contractor is responsible for complying with ALL requirements of the Colorado Department of Public Health and Environment Storm Water Discharge Permit including any changes to this SWMP to meet the requirements of the Permit. II. PROJECT DESCRIPTION AND NATURE OF CONSTRUCTION A. Site Location The PROJECT site is located in the west half of Section 29, Township 7 North, Range 68 West of the Sixth Principal Meridian, City of Fort Collins, County of Larimer, State of Colorado. The PROJECT site is located on the parcels of land #8729225901, #8729225905, and #8729226901. The PROJECT latitude is 40.546622°, and the PROJECT longitude is -105.035333°. The PROJECT site is bound to the west by the Timberline Church parking lot and South Timberline Road, to the east by the Rigden Farm townhomes, and to the south by Foothills Channel and Rendezvous Trail. Refer to the vicinity map below and in the Appendix. TIMBERLINE HOUSING April 7, 2022 P a g e 2 | 12 Figure 1 - Vicinity Map, NTS B. Existing Site Condition 1. Soil Properties The site’s existing soil type used for the site construction plans and stormwater management plan is based on information from the Geotechnical Engineering Report entitled “GEOTECHNICAL ENGINEERING REPORT – TIMBERLINE APARTMENT, FORT COLLINS, COLORADO” prepared by Terracon Consultants, Inc., dated May 5, 2021 (hereafter referred to as the REPORT). Based on the REPORT, the subsurface material consists of 9 to 13 feet of silt or clay over 4 to 12 feet of sand and gravel. Claystone bedrock was encountered below the overburden soils at depths of approximately 17 to 21 feet below existing grades. The upper 6 inches to 2 feet of bedrock was weathered and comparatively soft in some borings. Groundwater was encountered at depths of 12 to 13 feet. These observations represent groundwater conditions at the time of field exploration and may not be representative of other times or locations. Groundwater levels can be expected to fluctuate with varying seasonal and weather conditions. The existing site topography generally slopes from northwest to southeast with slopes ranging from 1 to 20%. Native grasses cover the majority of the construction site with asphalt pavement occupying a portion of the proposed site. Based on aerial imagery, the site consists of approximately 80% vegetative cover. The rainfall erodibility and the wind erodibility are considered low. TIMBERLINE HOUSING April 7, 2022 P a g e 3 | 12 According to an NRCS Soils Map, the construction site consists primarily of Nunn clay loam with a small amount of Fort Collins loam. The on-site soils classify as Type C Hydrologic Soils. A copy of the NRCS Soils Map is referenced in the Appendix. 2. Pathway to Nearest State Water The PROJECT lies entirely within the Foothills Drainage Basin which is generally bound by Taft Hill, Ziegler, Horsetooth, and Drake Road. The basin is primarily developed land with commercial development and mixed-use residential. Stormwater within the basin drains from west to east through open channels or through a storm sewer system to the Fossil Creek Reservoir Inlet Ditch. Three irrigation canals transport stormwater out of the basin. The site is within “Flood Insurance Rate Map (FIRM) – Panel No. 08069C1000F” by the Federal Emergency Management Agency, revised October 2020. The FIRMette shows that the site resides within an area of minimal flood hazard. Refer to the Appendix for a FIRMette panel for the PROJECT site. Runoff generated from the proposed development is conveyed via overland flow towards storm inlets, curb and gutter, and roof drains before being conveyed to rain gardens, swales, underground filtration systems, or the existing detention ponds. Runoff from this site is ultimately tributary to the Foothills Channel. 3. Anticipated Sources of Non-Stormwater Discharge In addition to discharge from stormwater, landscape irrigation return flows may be anticipated from tributary landscaped areas. There are no wetlands or springs anticipated to contribute to site discharge. 4. Summary of Ground Contamination There is no known ground contamination on or around the project site. 5. Distances from Riparian or Sensitive Areas The project site is not located near any riparian or sensitive areas. C. Proposed Construction Activities The PROJECT consists of an approximately 10-acre affordable housing development. The site plan prepared by Norris Design indicates eight new buildings containing 21 to 45 residential units each. The PROJECT is accessed off of Timberline Road and will require a new access road to the development. The development is anticipated to include a public water main extension, water quality treatment for the full site, and detention for the increase in runoff from the two year to 100-year storm event. Additionally, the Project is anticipated to include parking, landscaping, and utilities. TIMBERLINE HOUSING April 7, 2022 P a g e 4 | 12 III. POTENTIAL POLLUTANT SOURCES The potential for each of the possible pollutant sources to contribute pollutants to storm water discharge in the list below have been evaluated with regards to the frequency of the activity, the physical characteristic of the area, the ability of containment measure to prevent and contain leaks and/or spills, proximity to waterways or drainage facilities, the concentration and toxicity of materials and the possible contamination of storage facilities and materials. If it was determined that the source has a reasonable chance of contributing pollutants to storm water discharge, a specific BMP or combination of BMPs has been identified to address or mitigate that potential. A. All Disturbed and Stored Soils Disturbed Area: 11.94 acres Total Area: 11.94 acres Location of Stockpile: Proposed stockpile locations have been shown on the plans. At the discretion of the SWMP Administrator, actual stockpile locations may vary during construction; however, the current location of stockpiles shall be accurately reflected by redlining the construction plan set. Disturbed Soils: Soils disturbed during construction activities (grading, foundation excavation, utility trenching, etc.) have the potential to introduce sediment into runoff. Silt fence will be used to prevent sediment from leaving down-gradient of disturbed areas. Inlet protection will be used to help prevent sediment from entering storm sewer. Street sweeping shall be performed daily when disturbed soils have tracked onto paved streets. Construction fence will be used to minimize access to undisturbed areas and limit the area of disturbed soil. Rock socks will be used at sidewalk chase outfalls in order to catch sediment from concentrated runoff. BMP’s: Temporary and Permanent Seeding, Silt Fence, Inlet Protection, Street Sweeping and Vacuuming, Construction Fence, Rock Socks B. Vehicle Tracking of Sediments In order to prevent sediment from leaving the site via exiting vehicles, a vehicle tracking control pad shall be used for site access. Construction fence shall be used to limit access to the site from any area other than through the vehicle tracking control pad. Street sweeping shall occur whenever sediment is carried onto the street from the site. Nearby inlets shall be protected. BMP’s: Vehicle Tracking Control, Construction Fence, Street Sweeping and Vacuuming, Inlet Protection TIMBERLINE HOUSING April 7, 2022 P a g e 5 | 12 C. Management of Contaminated Soils Pre-existing contaminated soils are not anticipated. The following BMP’s shall be implemented to prevent contamination, and control contamination in the event of a spill: BMP’s: Good Housekeeping Practices, Stabilized Staging Area, Spill Prevention, Containment and Control D. Loading and Unloading Operations Loading and unloading operations can result in particulate generation, which can be carried off the site and ultimately collected by runoff. BMP’s: Where possible, dump trucks and waste trucks entering/exiting the site shall be covered. The property shall be watered to avoid particulate generation from loading/unloading. Loading and unloading shall take place on the Stabilized Staging Area and away from inlets. E. Outdoor Storage of Construction Site Materials, Building Materials, Fertilizers, and Chemicals Wherever possible, chemicals shall be stored in a covered location to prevent rainwater from directly impacting storage containers. The spill prevention, containment, and control BMP shall be utilized minimize risks from storing chemicals outside. All workers on the site shall be trained in spill prevention, containment, and control. Building materials shall be stored on the Stabilized Staging Area in order to minimize erosion while accessing stored materials. BMP’s: Spill Prevention, Containment, and Control, Stabilized Staging Area F. Bulk Storage of Materials No bulk storage of materials is anticipated for this site. BMP’s: None. G. Vehicle and Maintenance and Fueling On-site vehicle equipment maintenance and fueling increases the risk for spilling the chemicals used for these activities. Where practical, these activities should occur off-site. When on-site fueling and maintenance is warranted, it shall occur on the stabilized staging area. The location of the stabilized staging area is shown on the erosion control plans. If the location of the stabilized staging area is moved during construction, the updated location shall be redlined on the approved erosion control plan set. BMP’s: Good Housekeeping Practices, Stabilized Staging Area, Spill Prevention, Containment and Control TIMBERLINE HOUSING April 7, 2022 P a g e 6 | 12 H. Significant Dust or Particulate Generating Processes Dump Trucks and waste trucks shall be covered whenever possible. Water shall be used to minimize particulate generation. The City of Fort Collins requires that the site be continuously watered in order to minimize particulate generation from wind. If particulate accumulation results in sediment deposit outside of the site, street sweeping should occur immediately. BMP’s: Street Sweeping and Vacuuming I. Routine Maintenance Activities Involving Fertilizers, Pesticides, Detergents, Fuels, Solvents, and Oils Wherever possible, chemicals shall be stored in a covered location to prevent rainwater from directly impacting storage containers. The spill prevention, containment, and control BMP shall be utilized to minimize risks from storing chemicals outside. Workers on the site shall be trained in spill prevention, containment, and control. Additionally, wherever possible, chemicals should be used away from storm inlets and/or natural drainageways. For example, refueling should take place at least 50 feet away from storm sewer inlets. BMP’s: Spill Prevention, Containment, and Control J. On-Site Waste Management Practices Trash, demolition debris, and waste can be carried by storm water runoff and/or wind, contaminating runoff water, and clogging existing facilities. To mitigate this risk, dumpster should be closed whenever feasible. Dumpsters and/or waste piles shall be located a minimum of 50 feet from any inlet structures or watercourses. Inspection of dumpsters for leaks should occur with weekly SWMP inspections. BMP’s: Good Housekeeping Practices K. Concrete Truck/Equipment Washing Concrete waste including waste produced after washing trucks, pumps, and associated fixtures and equipment can be easily tracked onto adjacent streets with the potential to contaminate stormwater runoff. Concrete washout areas are specifically indicated on the plans and should be located a minimum of 50 feet from any inlet structures or watercourses. At the discretion of the SWMP Administrator, actual concrete washout locations may vary during construction; however, the current location of concrete washouts shall be accurately reflected by redlining the construction plan set. BMP’s: Concrete Washout Area TIMBERLINE HOUSING April 7, 2022 P a g e 7 | 12 L. Dedicated Asphalt and Concrete Batch Plants No dedicated asphalt or concrete batch plants will be used on-site. BMP’s: None. M. Non-Industrial Waste Sources such as Worker Trash and Portable Toilets Good housekeeping shall be practiced on-site in order to eliminate stormwater contamination risk from worker trash and portable toilets. Provide an adequate amount of trash bins in order to encourage compliance across all workers. Stake portable toilets to the ground in order to minimize the risk of overturning. Updated portable toilet locations shall be redlined on the construction plan set. Portable toilets shall be located a minimum of 50 feet from any inlet structures or watercourses. BMP’s: Good Housekeeping N. Saw Cutting and Grinding Sawcutting asphalt and concrete has the potential to introduce sediment into stormwater runoff. Downstream inlets shall be protected. Plan sawcutting for days when dry weather is expected. Do not wash any paved surface into receiving storm drain inlets or natural drainageways. Instead, loose material should be swept or vacuumed following sawcutting operations. BMP’s: Street Sweeping and Vacuuming O. Other non-stormwater discharges No other non-stormwater discharges have been identified. P. Other areas or operations where spills can occur No other areas where spills can occur have been identified. IV. CONSTRUCTION CONTROL MEASURES In addition to the descriptions below, the Contractor is encouraged to refer to the “Urban Storm Drainage Criteria Manual – Volume 3” for comprehensive BMP information. Good Housekeeping Practices (GH) Good housekeeping is a source control BMP. Good housekeeping practices are designed to maintain a clean and orderly work environment. Poor housekeeping practices result in increased waste and potential for stormwater contamination. A clean and orderly work site reduces the possibility of accidental spills caused by mishandling of chemicals and equipment. TIMBERLINE HOUSING April 7, 2022 P a g e 8 | 12 Silt Fence (SF) A silt fence is a woven geotextile fabric attached to wooden posts and trenched into the ground. It is designed as a sediment barrier to intercept sheet flow runoff from disturbed areas. A silt fence can be used where runoff is conveyed from a disturbed area as sheet flow. The ends of the silt fence should be turned up hill slightly creating a "J-hook" to promote the containment of sediment. Silt fence will be installed by excavating a 12-inch-deep trench along the line of proposed installation. Wooden posts supporting the silt fence will be spaced 4 feet to 6 feet apart and driven securely into the ground; a minimum of 10 inches deep. The silt fence will be fastened securely to the wooden posts with wire ties spaced every 24 inches at the top, mid-section, and bottom of the wooden post. Construction Fence (CF) A construction fence restricts site access to designated entrances and exits and delineates construction site boundaries. Vehicle Tracking Control (VTC) Vehicle tracking controls provide stabilized construction site access where vehicles exit the site onto paved public roads. An effective vehicle tracking control helps remove sediment (mud or dirt) from vehicles, reducing tracking onto the paved surface. When site conditions are wet or muddy, all non- essential vehicles and equipment will be limited only to areas that are impervious or that have adequate stabilization. If no on-site areas meet these requirements, then off-site parking will need to be arranged. Stockpile Management (SP) Stockpile management includes measures to minimize erosion and sediment transport from soil stockpiles. Stockpile management should be used when soils or other erodible materials are stored at the construction site. Temporary stockpile of topsoil shall be surrounded by SF. If the stockpile of materials other than topsoil is necessary, and they are to remain for an excess of 60 days, that stockpile shall be temporarily seeded within two weeks of initial stockpile. Stabilized Staging Area (SSA) A stabilized staging area is a clearly designated area where construction equipment, vehicles, stockpiles, waste bins, and other construction-related materials are stored. The contractor office trailer may also be located in this area. Depending on the size of the construction site, more than one staging area may be necessary. The layout of the staging area may vary depending on the type of construction activity. Staging areas located in roadways due to space constraints require special measures to avoid materials being washed into storm inlets. Concrete Washout Area (CWA) The Concrete Washout Area (CWA) is to be installed prior to construction activities. The CWA location on the Grading, Erosion, and Stormwater Quality Control Plan is provided for information only. Concrete washout areas may be lined or unlined excavated pits in the ground or commercially manufactured prefabricated washout containers. Concrete washout area may only be removed from site when all concrete related construction has been completed. TIMBERLINE HOUSING April 7, 2022 P a g e 9 | 12 Inlet Protection (IP) Inlet protection consists of permeable barriers installed around an inlet to filter runoff and remove sediment prior to entering a storm drain inlet. Inlet protection can be constructed from rock socks, sediment control logs, silt fence, block and rock socks, or other materials approved by the local jurisdiction. Area inlets can also be protected by over-excavating around the inlet to form a sediment trap. Inlet protection will be installed at the proposed inlets once constructed. Once installed, they are to be inspected and repaired/replaced, as necessary. Temporary Outlet Protection (TOP) Outlet protection helps to reduce erosion immediately downstream of a pipe, culvert, slope drain, rundown or other conveyance with concentrated, high-velocity flows. Typical outlet protection consists of riprap or rock aprons at the conveyance outlet. Outlet protection will be installed at culverts, flared-end sections, and any other openings at the end of drainage infrastructure. They are to be monitored to ensure no excess sediment or blockage of any kind will occur. Rock Sock (RS) Rock socks are to be utilized within curb and gutter adjacent to the site as perimeter control for disturbed areas. When placed in the gutter, rock socks shall not extend more than 2 feet from the curb to allow traffic to pass safely. Rock socks shall remain in place until the upstream disturbed area is stabilized. MATERIAL HANDLING AND SPILL PREVENTION If a spill should occur, the City of Fort Collins (970)-221-6700, and the Colorado Department of Public Health and Environment (877)-518-5608) must be notified. The contractor shall keep specific procedure manuals for material handling information, accident procedures, and spill handling. At a minimum, the contractor shall adhere to the following: Material and Equipment Storage: Nonhazardous materials that are to be stockpiled on the site but not installed within 14 days of arrival shall be stored in the construction staging and/or material storage area. Materials delivered to the site which will be installed within 14 days of arrival may be stored nearer to the point of installation. These materials include but are not limited to pipe, precast structures, fire hydrants, tees, valves, and misc. fittings. Construction and maintenance equipment such as hand tools and small parts shall be stored within the stabilized storage area or materials storage area in watertight containers. Hazardous materials that are to be stored on-site such as, but not limited to, oil filters, petroleum products, paint, and equipment maintenance fluids shall be stored in structurally sound and sealed containers clearly marked “Hazardous Material”. These containers are to be located within the stabilized storage areas and/or material storage area. Spill Response/Management of Contaminated Soils: TIMBERLINE HOUSING April 7, 2022 P a g e 10 | 12 • Containment and cleanup of spills should begin promptly after the spill is observed • Contain medium sized spills with absorbents (e.g., kitty litter, saw dust) and use inflatable berms or absorbent snakes as temporary booms for the spill. Store and dispose of absorbents properly. • For large spills, first contain the spill and plug storm drain inlets where the liquid may migrate off-site, then clean up the spill. • Excavation of spill areas to removed contaminated material may be required where large spills occur on unpaved surfaces. • Contain the entire spill if possible. If immediate containment is not possible, use curbing to route spilled material to a collection basin. The containment area must have an impermeable surface. • Material from the spill area must be disposed of or recycled according to local, state, and federal standards. Vehicle and Equipment Fueling and Maintenance: The fueling of vehicles and equipment which occurs on-site shall occur in the stabilized storage area. Only minor equipment maintenance shall occur on-site. All major equipment maintenance shall be performed off-site. Any equipment fluids generated from maintenance activities will be disposed of into designated drums stored on spill pallets. Absorbent, spill-cleanup materials and spill kits shall be available at the stabilized storage area and/or materials storage area. Drip pans shall be placed under all equipment receiving maintenance. Drip pans shall also be placed under vehicles and/or equipment parked overnight which have known fluid leaks. Waste Management and Disposal, Including Concrete Washout: All hazardous waste materials shall be disposed of in structurally sound and sealed containers located within a hazardous materials storage area in the stabilized storage area. Hazardous waste materials will be stored in appropriate and clearly marked containers and segregated from other non-waste materials. Secondary containment shall be provided for all waste materials in the hazardous materials storage area and will consist of commercially available spill pallets. Additionally, all hazardous waste materials shall be disposed of in accordance with federal, state, and municipal regulations. Non-hazardous waste materials may be disposed of into on-site dumpsters. Construction trash dumpsters should be located in the stabilized storage area. Dumpsters should have a secure lid and meet all federal, state, and municipal regulations. Only trash and construction debris from the site should be deposited in these dumpster. No construction materials shall be buried on-site. All construction personnel shall be instructed regarding the correct disposal of trash and construction debris, as well as procedures for hazardous waste disposal. The SWMP Administrator shall be responsible for seeing that these practices are followed. TIMBERLINE HOUSING April 7, 2022 P a g e 11 | 12 V. INSTALLATION AND REMOVAL SEQUENCE OF CONSTRUCTION MEASURES Construction tasks to be completed shall include the following sequential activities. A detailed construction sequence schedule can be provided once a contractor has been selected. Initial erosion control installation before construction activities commence Demolition and removal activities Clearing and grubbing Overlot grading Installation of utilities Construction of building, pavement, and drive lanes Site stabilization VI. MAINTENANCE AND INSPECTION REQUIREMENTS At a minimum, inspections of sediment control measures shall be conducted at least every seven days and after any significant wind, precipitation, or snowmelt event that may cause erosion. Mitigation measures shall be inspected for at least the following: Accumulation of excess sediment and determination if the effectiveness of each structure is significantly reduced. Removal of accumulated sediment shall occur at the following limits: depth of 6 inches for silt fence, within 2.5 inches of the rock crest for inlet protection, and within one-half of the height of the crest of the log for sediment control logs. Damage to structures that need repairing to ensure their effectiveness. Addition or elimination of sediment and/or erosion control measures that are designed to control the movement of soil particles in a practical and effective manner. Immediate repair and/or replacement of necessary mitigation measures when total failures are found. Vehicle tracking control measures are to be inspected, repaired, and maintained to ensure it is acting as an effective sediment control measure. Results of each inspection shall be recorded on the reporting form (see Appendix) that will be kept with the Contractor or their representative. A copy of all inspection reports and plan markups of any changes to the approved SWMP plan shall be maintained on site and copies provided to the City, upon request. Additional information on inspection and maintenance can be found in the Appendix. TIMBERLINE HOUSING April 7, 2022 P a g e 12 | 12 VII. FINAL VEGETATION AND STABILIZATION Permanent stabilization shall be achieved by installation of erosion control methods. Permanent erosion control for this project shall include one or more of the following methods: Landscaping Establishing native vegetation Paving Landscaping shall be watered and fertilized until acceptance by the City of Fort Collins. Any areas found to be in unacceptable condition shall be revegetated until accepted by the City of Fort Collins. Refer to Grading, Erosion, and Stormwater Quality Control Plan (Appendix D) and landscaping plans for BMP installation location. REFERENCES “Fort Collins Stormwater Criteria Manual”, City of Fort Collins, revised Dec. 2018. “GEOTECHNICAL ENGINEERING REPORT – TIMBERLINE APARTMENT, FORT COLLINS, COLORADO,” Terracon Consultants, Inc., May 5, 2021. “Urban Drainage and Flood Control District Drainage Criteria Manual Vol. 1, 2 and 3”, Wright-McLauglin Engineers, Latest revision. APPENDIX A VICINITY MAP 1000 ft N➤➤N © 2021 Google © 2021 Google © 2021 Google Foothill s C h a n n el Foothill s C h a n n el APPROXIMATE SITE LOCATION Timberline Church Rendezvous TrailRigden Farm TIMBERLINE HOUSING April 7, 2022 APPENDIX B FIRMETTE National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 11/23/2021 at 11:19 AM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 105°2'26"W 40°33'1"N 105°1'49"W 40°32'33"N Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 TIMBERLINE HOUSING April 7, 2022 APPENDIX C NRCS SOILS REPORT United States Department of Agriculture A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Larimer County Area, ColoradoNatural Resources Conservation Service November 22, 2021 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 Soil Map..................................................................................................................5 Soil Map................................................................................................................6 Legend..................................................................................................................7 Map Unit Legend..................................................................................................8 Map Unit Descriptions..........................................................................................8 Larimer County Area, Colorado......................................................................10 36—Fort Collins loam, 3 to 5 percent slopes..............................................10 73—Nunn clay loam, 0 to 1 percent slopes.................................................11 74—Nunn clay loam, 1 to 3 percent slopes.................................................12 References............................................................................................................15 4 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 5 6 Custom Soil Resource Report Soil Map 448813044882104488290448837044884504488530448861044886904488770448813044882104488290448837044884504488530448861044886904488770496660 496740 496820 496900 496980 497060 497140 496660 496740 496820 496900 496980 497060 497140 40° 32' 59'' N 105° 2' 22'' W40° 32' 59'' N105° 2' 1'' W40° 32' 37'' N 105° 2' 22'' W40° 32' 37'' N 105° 2' 1'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 150 300 600 900 Feet 0 45 90 180 270 Meters Map Scale: 1:3,160 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Larimer County Area, Colorado Survey Area Data: Version 16, Sep 2, 2021 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 11, 2018—Aug 12, 2018 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report 7 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 36 Fort Collins loam, 3 to 5 percent slopes 0.0 0.1% 73 Nunn clay loam, 0 to 1 percent slopes 11.7 93.2% 74 Nunn clay loam, 1 to 3 percent slopes 0.8 6.6% Totals for Area of Interest 12.6 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or Custom Soil Resource Report 8 landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. Custom Soil Resource Report 9 Larimer County Area, Colorado 36—Fort Collins loam, 3 to 5 percent slopes Map Unit Setting National map unit symbol: 2yqpg Elevation: 4,800 to 5,900 feet Mean annual precipitation: 13 to 15 inches Mean annual air temperature: 48 to 50 degrees F Frost-free period: 135 to 150 days Farmland classification: Prime farmland if irrigated Map Unit Composition Fort collins and similar soils:80 percent Minor components:20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Fort Collins Setting Landform:Terraces, alluvial fans Landform position (three-dimensional):Tread Down-slope shape:Convex, linear Across-slope shape:Linear Parent material:Pleistocene or older alluvium and/or eolian deposits Typical profile Ap - 0 to 5 inches: loam Bt1 - 5 to 8 inches: clay loam Bt2 - 8 to 18 inches: clay loam Bk1 - 18 to 24 inches: loam Bk2 - 24 to 80 inches: loam Properties and qualities Slope:3 to 5 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.20 to 2.00 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:12 percent Maximum salinity:Nonsaline to very slightly saline (0.1 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: High (about 9.1 inches) Interpretive groups Land capability classification (irrigated): 4e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: C Ecological site: R067BY002CO - Loamy Plains Hydric soil rating: No Custom Soil Resource Report 10 Minor Components Table mountain Percent of map unit:15 percent Landform:Stream terraces, alluvial fans Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY036CO - Overflow Hydric soil rating: No Larim Percent of map unit:5 percent Landform:Alluvial fans Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY063CO - Gravel Breaks Hydric soil rating: No 73—Nunn clay loam, 0 to 1 percent slopes Map Unit Setting National map unit symbol: 2tlng Elevation: 4,100 to 5,700 feet Mean annual precipitation: 14 to 15 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 135 to 152 days Farmland classification: Prime farmland if irrigated Map Unit Composition Nunn and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Nunn Setting Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Pleistocene aged alluvium and/or eolian deposits Typical profile Ap - 0 to 6 inches: clay loam Bt1 - 6 to 10 inches: clay loam Bt2 - 10 to 26 inches: clay loam Btk - 26 to 31 inches: clay loam Bk1 - 31 to 47 inches: loam Bk2 - 47 to 80 inches: loam Custom Soil Resource Report 11 Properties and qualities Slope:0 to 1 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat):Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:7 percent Maximum salinity:Nonsaline (0.1 to 1.0 mmhos/cm) Sodium adsorption ratio, maximum:0.5 Available water supply, 0 to 60 inches: High (about 9.1 inches) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4e Hydrologic Soil Group: C Ecological site: R067BY042CO - Clayey Plains Hydric soil rating: No Minor Components Heldt Percent of map unit:10 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY042CO - Clayey Plains Hydric soil rating: No Wages Percent of map unit:5 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY002CO - Loamy Plains Hydric soil rating: No 74—Nunn clay loam, 1 to 3 percent slopes Map Unit Setting National map unit symbol: 2tlpl Elevation: 3,900 to 5,840 feet Mean annual precipitation: 13 to 17 inches Mean annual air temperature: 50 to 54 degrees F Frost-free period: 135 to 160 days Custom Soil Resource Report 12 Farmland classification: Prime farmland if irrigated Map Unit Composition Nunn and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Nunn Setting Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Pleistocene aged alluvium and/or eolian deposits Typical profile Ap - 0 to 9 inches: clay loam Bt - 9 to 13 inches: clay loam Btk - 13 to 25 inches: clay loam Bk1 - 25 to 38 inches: clay loam Bk2 - 38 to 80 inches: clay loam Properties and qualities Slope:1 to 3 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat):Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:7 percent Maximum salinity:Nonsaline to very slightly saline (0.1 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum:0.5 Available water supply, 0 to 60 inches: High (about 9.9 inches) Interpretive groups Land capability classification (irrigated): 2e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Ecological site: R067BY042CO - Clayey Plains Hydric soil rating: No Minor Components Heldt Percent of map unit:10 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY042CO - Clayey Plains Hydric soil rating: No Custom Soil Resource Report 13 Satanta Percent of map unit:5 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:R067BY002CO - Loamy Plains Hydric soil rating: No Custom Soil Resource Report 14 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 15 United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf Custom Soil Resource Report 16 TIMBERLINE HOUSING April 7, 2022 APPENDIX D EROSION CONTROL PLANS BMP INFORMATION SITELOCATIONVICINITY MAPVICINITY MAP# ” ‘’ ’‘’ ‘’” ”” 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTALC350EROSION CONTROL COVERSHEETSITE CONSTRUCTION PLANSTIMBERLINE HOUSINGLOT 1-A, TIMBERLINE CHURCH P.U.D. FILING NO. 2A PARCEL OF LAND LOCATED IN THE WEST HALF OF SECTION 29,TOWNSHIP 7 NORTH, RANGE 68 WEST OF THE 6TH PRINCIPAL MERIDIAN,CITY OF FORT COLLINS, COUNTY OF LARIMER, STATE OF COLORADO’ 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTALC351EROSION CONTROL NOTES’“” ’ ’“” TIMBERLINE CHURCHS TIMBERLINE ROAD IOWA DRIVE ILLINOIS DRIVE C356C358C357FOOTHILLS CHANNEL244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C355INITIAL EROSION CONTROLPLAN 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C356DETAILED INITIAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C357 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C357DETAILED INITIAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C356MATCHLINE: SEE SHEET C358 IOWA DRIVE244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C358DETAILED INITIAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C357 A.CA.CA.DA.DA.EA.EA.FA.FA.GA.GA.HA.HA.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3A.AA.AA.JA.JA.1A.1A.6A.6A.CA.CA.D A.D A.EA.EA.FA.FA.G A.G A.H A.H A.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3 A.A A.A A.JA.J A.1 A.1A.6A.6A.CA.CA.DA.DA.EA.EA.FA.FA.GA.GA.HA.HA.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3A.AA.AA.JA.JA.1A.1A.6A.6A.CA.CA.DA.DA.EA.EA.FA.FA.GA.GA.HA.HA.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3A.AA.AA.JA.JA.1A.1A.6A.6A.CA.CA.DA.DA.EA.EA.FA.FA.GA.GA.HA.HA.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3A.AA.AA.JA.JA.1A.1A.6A.6A.CA.CA.DA.DA.EA.EA.FA.FA.GA.GA.HA.HA.2A.2A.4A.4A.7A.7A.BA.BA.5A.5A.3A.3A.AA.AA.JA.JA.1A.1A.6A.6C.3C.3C.2C.2C.BC.BC.CC.CC.1C.1C.AC.ACCCCCCCCC C C CC C C C C C C C C C C C C C C C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C C C C C C C C C C C C C C C C C C C C CCCCCCC CCCCCCCCCCCCCCCCCCCCCCTIMBERLINE CHURCHS TIMBERLINE ROAD IOWA DRIVE ILLINOIS DRIVEPROPOSED BUILDING 7FFE=4931.57-4932.90PROPOSED BUILDING 4FFE=4929.25PROPOSED BUILDING 3FFE=4929.00PROPOSED BUILDING 2FFE=4931.33PROPOSED BUILDING 1FFE=4931.06C362C361C363PROPOSED BUILDING 6FFE=4930.00PROPOSED BUILDING 5FFE=4929.75244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C360INTERIM EROSION CONTROLPLAN C.3C.3C.2C.2C.BC.BC.CC.CC.1C.1C.AC.ACCCCCCCCC C C CC C C C C C C C C C C C C C C C CCCCCCCCCPROPOSED BUILDING 7FFE=4931.57-4932.90PROPOSED BUILDING 6FFE=4930.00244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C361DETAILED INTERIM EROSIONCONTROL PLANMATCHLINE: SEE SHEET C361 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCPROPOSED BUILDING 5FFE=4929.75PROPOSED BUILDING 4FFE=4929.25PROPOSED BUILDING 3FFE=4929.00FOREBAY RE: C862244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C362DETAILED INTERIM EROSIONCONTROL PLANMATCHLINE: SEE SHEET C362MATCHLINE: SEE SHEET C363 CCCCCCCCCCCCCCCCC C C CCCCCCCCCCCCCC IOWA DRIVEPROPOSED BUILDING 2FFE=4931.33PROPOSED BUILDING 1FFE=4931.06244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C363DETAILED INTERIM EROSIONCONTROL PLANMATCHLINE: SEE SHEET C361 CCCCCCCCC C C CC C C C C C C C C C C C C C C C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C C C C C C C C C C C C C C C C C C C C CCCCCCC CCCCCCCCCCCCCCCCCCCCCCTIMBERLINE CHURCHS TIMBERLINE ROAD IOWA DRIVE ILLINOIS DRIVEPROPOSED BUILDING 7FFE=4931.57-4932.90PROPOSED BUILDING 4FFE=4929.25PROPOSED BUILDING 3FFE=4929.00PROPOSED BUILDING 2FFE=4931.33PROPOSED BUILDING 1FFE=4931.06C366C367C368PROPOSED BUILDING 5FFE=4929.75PROPOSED BUILDING 6FFE=4930.00244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C365FINAL EROSION CONTROLPLAN C.3C.3C.2C.2C.BC.BC.CC.CC.1C.1C.AC.ACCCCCCCCC C C CC C C C C C C C C C C C C C C C CCCCCCCCCPROPOSED BUILDING 7FFE=4931.57-4932.90PROPOSED BUILDING 6FFE=4930.00FOREBAY RE: C862244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C366DETAILED FINAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C367 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCPROPOSED BUILDING 5FFE=4929.75PROPOSED BUILDING 4FFE=4929.25PROPOSED BUILDING 3FFE=4929.00FOREBAY RE: C862244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C367DETAILED FINAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C366MATCHLINE: SEE SHEET C368 CCCCCCCCCCCCCCCCC C C CCCCCCCCCCCCCC IOWA DRIVEPROPOSED BUILDING 2FFE=4931.33PROPOSED BUILDING 1FFE=4931.06244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTAL811’C368DETAILED FINAL EROSIONCONTROL PLANMATCHLINE: SEE SHEET C367 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTALC390EROSION CONTROL DETAILSAND NOTES 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTALC391EROSION CONTROL DETAILSAND NOTES 244 North College Avenue #130Fort Collins, Colorado 80524P 970.409.3414www.norris-design.comNOT FORCONSTRUCTIONMARTIN/MARTINC O N S U L T I N G E N G I N E E R S12499 WEST COLFAX AVENUELAKEWOOD, COLORADO 80215303.431.6100MARTINMARTIN.COMOWNER:DATE:SHEET TITLE:OWNER:DATE:SHEET TITLE:CHECKED BY:DRAWN BY: TIMBERLINE HOUSING FINAL DEVELOPMENT PLAN (FDP) 2908 S TIMBERLINE RD, FORT COLLINS, CO 80525TIMBERLINE CHURCH2908 S TIMBERLINE RD,FORT COLLINS, CO 80525(970) 482-4387T. OGRENB. NEMEC 12/22/21 SUBMITTAL 03/02/22 SUBMITTAL04/08/22 SUBMITTALC392EROSION CONTROL DETAILSAND NOTES