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Home My WebLink AboutHILL SINGLE-FAMILY - FDP210005 - SUBMITTAL DOCUMENTS - ROUND 2 - EROSION CONTROL LETTER/REPORTErosion Control Report Stormwater Management Plan for Hill Single-Family FDP210005 May 6, 2021 Prepared by: Keefe Civil, Inc. 3125 Crockett Street Fort Collins, Colorado 80526 Prepared for: Chris Hill 4112 Lakefront Drive Loveland, Colorado 80537 Hill Single-Family FDP210005 Table of Contents Table of Contents 1 Introduction ....................................................................................................... 2 1.1 Site Description ..................................................................................................... 2 1.2 Nature of Proposed Construction Activity .............................................................. 4 1.3 Proposed Sequence of Major Activities ................................................................. 4 1.4 Location of Potential Pollutant Sources ................................................................. 5 2 BMPs for Stormwater Pollution Prevention .................................................... 6 2.1 Erosion and Sediment Controls ............................................................................ 6 2.2 Materials Handling and Spill Prevention ................................................................ 8 3 Stormwater Management Controls................................................................ 11 3.1 SWMP Administrator ............................................................................................11 3.2 Identification of Potential Pollution Sources .........................................................11 4 Final Stabilization and Long-Term Stormwater Management ..................... 14 5 Inspection and Maintenance .......................................................................... 15 5.1 City of Fort Collins Standard Erosion and Sediment Control Notes ......................15 5.2 City of Fort Collins Erosion Control Security Calculations ....................................16 6 SWMP Implementation ................................................................................... 17 Figures Figure 1: Vicinity Map……………………………………………………….…………………..3 Appendices A Flood Insurance Rate Map B NRCS Soil Survey of Larimer County C Lot 2, Blehm Subdivision 2nd Filing, Being a Replat of Lot 5, Blehm Subdivision Utility Plans D Best Management Practices Detail Sheets E City of Fort Collins Erosion Control Security Calculations Hill Single-Family FDP210005 Section 1 1 Introduction The primary purpose of preparing and maintaining a stormwater management plan is to improve the health and quality of the State's urban waterways. The preparation of and adherence to this plan will aid in achieving this objective by establishing a program of actions to be used during construction activities and describing stormwater management controls and various Best Management Practices (BMPs) necessary to reduce erosion, sediment, and pollutants in stormwater discharge. The project will disturb more than one acre (~2.59 acres), which will require a Stormwater Management Plan (SWMP) permit. Information concerning the State of Colorado General SWMP permit are not included in the appendices of this report, but this document may be used by the project’s contractor as a part of the required documentation for final permit. 1.1 Site Description The 4.011-acre project site is located 0.3 mile east of the South Timberline Road and Kechter Road intersection and approximately 450 ft north of Kechter Road right-of-way (Figure 1). The Hill Single-Family project is lot 2 of Blehm Subdivision 2nd Filing, being a replat of Lot 5, Blehm Subdivision in Fort Collins, Colorado. The lot is bound by a Stetson Creek PUD Second Filing concrete drainage channel and single-family residential lots to the north, and urban estate residential properties to the south, west, and east. Historically, site stormwater has drained with gentle slopes from the southwest to northeast into offsite flood irrigation channels on the upstream edge of Blehm Subdivision Lot 6 to the east and conveyed north to the Stetson Creek PUD Second Filing concrete drainage channel, which discharges into McClellands drainageway. The site is located within the McClellands drainage basin. Per the flood insurance rate map (Appendix A), the lot is located within Zone X. Zone X is defined as an area of minimal flood hazard and does not have a base flood elevation associated with it. Hill Single-Family FDP210005 Section 1 Figure 1: Vicinity Map The lot is undeveloped pastureland with moderate vegetative ground cover. Per the NRCS Soil Survey of Larimer County (Appendix B), the site consists of ~57% Fort Collins loam and ~43% Nunn clay loam, which has a hydrologic soil group C classification. These soils are anticipated to have a slow infiltration rate when thoroughly wet and a slow rate of water transmission. Additional soil characteristics are as follows. The site’s erosion factor K ranges between 0.24 and 0.43. The higher the K factor, the more susceptible the soil is to sheet and rill erosion by water. Based on the NRCS map, the northern portion of the site (the low spot) is less likely to experience water erosion than the southern portion. Soil Type Percent of Site Hydrologic Soil Group K Factor Wind Group Fort Collins loam, 0 to 3 percent slopes 26.0% C 0.43 5 Fort Collins loam, 3 to 5 percent slopes 31.0% C 0.43 5 Nunn clay loam, wet, 1 to 3 percent slopes 43.0% C 0.24 6 Hill Single-Family FDP210005 Section 1 This project site is in the 5 and 6 wind groups. Wind erodibility groups range from 1 to 8. The higher the group number, the least susceptible the soils are to experience wind erosion. 1.2 Nature of Proposed Construction Activity Since the total disturbed area is ~2.59 acres, the property owner’s contractor must obtain a Colorado Discharge Permit System (CDPS) Stormwater Discharge Associated with Construction Activities General Permit. Construction activity will be typical of small residential developments, as discussed below. Proposed site improvements include a two-story house with basement, attached garage, a gravel driveway with access off Kechter Road, and a detached barn. There will be minimal concrete surrounding the house and barn. The homeowner intends to revegetate with native plant material and turf. The gravel driveway and turnaround shall be made of compacted road base material meeting Poudre Fire Authority standards. 1.3 Proposed Sequence of Major Activities The project will be constructed in two phases with the following sequence of construction activity related to the proposed erosion control plan (Appendix C). 1. Install and implement construction boundary erosion fence (silt fence) and vehicle tracking control at the proposed driveway entrance off Kechter Road. 2. Clear, grub, and stockpile topsoil along proposed driveway limits. Implement soil storage area sediment controls adjacent to proposed barn location. 3. Utility service line installation (water, gas, and electric). 4. Stormwater culvert installation (four total). 5. Grade and construct Kechter Road entrance and access road. 6. Install rock socks along access road drainage swale. 7. Complete final site stabilization along the access road from Kechter Road to proposed house. 8. Install concrete washout adjacent to proposed barn location. 9. Barn construction. Hill Single-Family FDP210005 Section 1 10. Complete final grading, landscaping, and site stabilization around barn. 11. Remove stockpile storage area sediment controls and concrete washout adjacent to barn. 12. Install stockpile storage area sediment controls and concrete washout adjacent to proposed house location. 13. House construction. 14. Complete final grading, landscaping, and site stabilization adjacent to house. 15. Remove all BMPs and complete final site cleanup. 1.4 Location of Potential Pollutant Sources The property owner’s future contractor shall identify potential pollution sources and implement BMPs to minimize the risk of pollution outside the construction area. Potential pollution sources will generally be restricted to on-site locations and are discussed in detail within Section 3.2. Hill Single-Family FDP210005 Section 2 2 BMPs for Stormwater Pollution Prevention 2.1 Erosion and Sediment Controls Structural Practices Structural practices for the site will consist mainly of a concrete washout area, vehicle tracking pad, rock socks along the flowline of the drainage swales, and silt fence, which are described in detail within the following paragraphs. Detail drawings of these BMPs are included in Appendix D. BMPs are expected to change as construction progresses and it is the responsibility of the contractor to ensure appropriate BMPs are in place and/or removed at the appropriate time in the construction sequence (Section 1.3). All temporary and permanent erosion and sediment control practices must be maintained and repaired as needed to assure continued performance of their intended function. All BMPs shall be inspected and repaired or replaced as indicated in Section 5 and as required to satisfy the conditions of the SWMP permit. The concrete washout area is intended to contain washout liquids and solids resulting from the cleaning of concrete trucks and pumps. Washouts should be placed near the area where concrete is being poured for either the house or barn. A vehicle tracking pad is intended to trap mud and sediment within coarse grain material and provide clean access to public roadways. Wherever construction vehicle access routes intersect paved public roads (Kechter Road), a vehicle tracking control pad shall be installed to minimize the transport of sediment (mud) by runoff or vehicles tracking onto the paved surface. Pads shall be maintained and refurbished when necessary, to obtain their intended result. Rock socks are intended to be installed along the flowline of site drainage swales. The rock socks will control localized sediment loading during construction activities. Silt fence will aid in the prevention of sediment leaving the site during a stormwater runoff or wind event by collecting silt deposits along the fence line while still allowing storm water to seep through. Silt fence shall be placed along the western access road boundary closest to Kechter Road (Blehm Subdivision 2nd Filing, Lot 1) and at the northeast corner of the project Hill Single-Family FDP210005 Section 2 site to prevent sediment transport. Silt fence shall be inspected and maintained regularly; generally, every 2 weeks and after every rainfall event that produces runoff. Sediment must be removed, and rocks replaced. Silt fence shall be installed prior to any work commencing on-site. Non-Structural Practices If there are any low sloped areas exposed during land disturbing activity (stripping, grading, utility installations, stockpiling, filling, etc.) they shall be kept in a roughened condition by ripping or disking along land contours until mulch, vegetation or other permanent erosion control is installed by contractor. If there are any exposed steep sloped areas created during land disturbing activity (stripping, grading, utility installations, stockpiling, filling, etc.) they shall have slope protection. The contractor shall use a tracked vehicle to run perpendicular to the slope to inhibit rill/gully erosion. The contractor may use other windrow-type methods, as necessary. No soil shall remain exposed by land disturbing activity for >30 days. After 30 days, temporary or permanent erosion control seed/mulch or landscaping is required to be installed by contractor. Additional Non-Structural Practices are strongly encouraged, such as minimizing soil and vegetation disturbance, providing educational materials on disposal/recycling, spill prevention / clean up, identification and elimination of illicit discharges, promotion of street sweeping and the development of public education programs. THE CONTRACTOR SHALL ADD ANY AND ALL BMP’S AND DETAILS NEEDED FOR SEDIMENT/EROSION CONTROL. Hill Single-Family FDP210005 Section 2 2.2 Materials Handling and Spill Prevention Potential impacts from significant materials and their handling are included below. Chemicals, cleaning substances, and petroleum products related to construction shall be stored within the construction trailer during barn construction or inside the future barn during the house construction phase. These areas will protect the chemicals from encountering precipitation. No storage of these materials will be allowed outside. Maintenance of equipment and refueling shall not take place on-site until the barn is constructed. Once the barn is constructed, equipment maintenance and fueling may be accomplished either in the barn or off- site. Absorbent (e.g., kitty litter) shall be stored in the construction trailer or barn and immediately applied to any spill with the dry material being disposed of properly and legally. All construction waste shall be disposed of in available on-site dumpsters throughout the workday. Liquid wastes will be hauled off-site and disposed of properly and legally. Any cleaning or maintenance of small equipment will be required to be done within a containment device (e.g., horse trough) and the liquid disposed of properly and legally. In the event of any spill, the SWMP administrator shall be notified immediately. Spills shall be broken into three categories. Their definitions and the procedures required to address the spills are indicated below. Minor Spill A spill generally <5 gallons which is unlikely to reach adjacent waters (e.g., equipment leak). Procedure: 1. Stop the source of spill. 2. Contain spillage. 3. Contact SWMP administrator. 4. Clean up spill with on-site absorbent material (e.g., kitty litter). Hill Single-Family FDP210005 Section 2 5. Dispose of dry material properly and legally. 6. Document spill and response in the SWMP. Include dates and times. Verify the pollutants are completely cleaned up. 7. Include incident in the following site safety meeting. 8. Provide spill information to City of Fort Collins representative at next regular inspection. Significant Spill A spill of pollutants or oils of any size that has or will likely reach adjacent waters, may endanger health or the environment, or which may exceed a water quality standard. Procedure: 1. Stop source of spill. 2. Contain spillage. 3. Contact SWMP administrator. 4. Clean up spill with on-site absorbent material (e.g., kitty litter). 5. Dispose of dry material properly and legally. 6. Document spill and response in the SWMP. Include dates and times. Verify the pollutants are completely cleaned up. 7. Notify City of Fort Collins at (970) 221-6700 and Colorado Department of Public Health and Environment spill reporting line at (877) 518-5608 and report the spill. 8. Notify the same two entities above with a written submission (outlined in permit) within five calendar days. 9. Include incident in the following site safety meeting. Hazardous Spill A spill of a dangerous substance requiring expert cleanup. Procedure: 1. Secure spill area – do not approach spill area. Hill Single-Family FDP210005 Section 2 2. Offer first aid to any injured parties. 3. Call 911 and describe nature of the spill and any injuries. 4. If possible, isolate downstream areas from the spill (e.g., cover a downstream storm drain inlet, a safe distance from the spill, with plastic and soil). 5. Contact SWMP administrator. 6. Document spill and response in SWMP. 7. Notify City of Fort Collins at (970) 221-6700 and Colorado Department of Public Health and Environment spill reporting line at (877) 518-5608 and report the spill. 8. Notify the same two entities above with a written submission (outlined in permit) within five calendar days. 9. Include incident in the following training meeting. Hill Single-Family FDP210005 Section 3 3 Stormwater Management Controls 3.1 SWMP Administrator The local contact / SWMP administrator (Administrator) has yet to be determined for project. Administrator will be responsible for developing, implementing, maintaining, and revising the SWMP. Administrator will also be responsible for required inspections and coordinating and documenting changes or repairs resulting from inspections. Administrator will be responsible for SWMP training and enforcement aspects and will be the first point of contact for any stormwater issues. 3.2 Identification of Potential Pollution Sources The permit identifies the following potential project pollution sources that must be evaluated for their potential contribution to stormwater discharge. Disturbed and stored soil Construction will require areas to be disturbed, exposing soil, during utility installation, access road grading, and foundation construction as shown on approved project utility plans. BMPs shall include rock socks along access road swale, inlet protection on proposed storm drain flared end sections, minimizing disturbance of existing vegetation and hard surfaces, and slope roughening and tracking of slopes after disturbance and prior to landscaping, paving, or building by contractor. Vehicle tracking of sediment Construction will require the contractor and all subs to drive their vehicles on unpaved surfaces to the proposed buildings and utility improvement locations. BMPs will include a policy that vehicles must be clean prior to entering the site and, if they become muddy during construction or earthwork activities, mud is to be removed from the vehicle by hand in an area near the vehicle tracking pad prior to departing project site. Any soil tracked from the project site is to be disposed of by sweeping or scraping the material off Kechter Road. Any muddy vehicle will use the vehicle tracking pad prior to leaving the site. Hill Single-Family FDP210005 Section 3 Management of contaminated soil Soil borings completed by others do not indicate existing soil contamination on-site. If contaminated soil is encountered, dispose of material properly and legally. Loading and unloading operations Chemicals and petroleum products will be brought to the project site for construction purposes. Anytime these items are being transported, they will be in a sealed container. Outdoor storage activities Inert materials, such as wood and stone, are not pollutant sources and may be stored outside. These materials will likely be covered with tarps or plastic, but they are not covered by the permit. Chemicals and petroleum products will be stored within either the construction trailer or future barn. Cement and mortar bags (if stored outside) will be completely covered with plastic to avoid contact with precipitation. Vehicle and equipment maintenance and fueling Vehicle maintenance and fueling are a necessary part of the construction process. No fuel will be stored on-site unless it is located inside the future barn. If vehicle maintenance is required, it will either take place off-site or inside the future barn. Significant dust or particulate generating processes To control dust or particulate generating processes, a water truck or similar watering device will be always available on-site. Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc. Fertilizers and pesticides will not be used during construction activities. Any cleaning or maintenance of small equipment will be required to be done within a containment device (e.g., horse trough) and the liquid will be disposed of properly and legally. Hill Single-Family FDP210005 Section 3 On-site waste management Site construction will result in standard construction waste. A dumpster for trash and a dumpster for bulk recycling will be made available on-site by the contractor. Waste will be hauled to the dumpsters by hand or in loaders. Dumpsters will be hauled off as needed. No construction waste will be left outside overnight without being in a dumpster. No construction debris (including broken concrete) may be buried on-site. Concrete truck/equipment washing One mobile concrete washout will be provided on-site during each phase of construction (two phases total). This will be used for trucks and for any masonry/concrete tools. Non-structural waste sources, such as worker trash and portable toilets A trash dumpster will be available for construction trash and will be located near the construction trailer and emptied weekly. Portable toilets will be staked on site near the construction trailer. CONTRACTOR TO UPDATE THE ABOVE INFORMATION WITH EXACT LOCATIONS OF CONCRETE WASHOUT, DUMPSTERS, AND PORTABLE TOILETS PRIOR TO COMMENCEMENT OF CONSTRUCTION AND UPDATED AS NECESSARY THROUGHOUT THE CONSTRUCTION SEQUENCE. Hill Single-Family FDP210005 Section 4 4 Final Stabilization and Long-Term Stormwater Management Long-term erosion control for this site will be include established native vegetative cover, landscaping, and xeriscaping around the completed site improvements (access road and buildings). All disturbed areas will either be paved with compacted road base, sodded or mulched. Soil in native vegetation areas shall be thoroughly loosened to a depth of not less than eight inches; and soil amendments shall be thoroughly incorporated into the soil of such areas to a depth of at least six inches by tilling, discing or other suitable method, at a rate of at least three cubic yards of soil amendment per 1,000 square feet of area to be planted, unless at least four inches of loose top soil has been placed on the area after completion of construction activity on top of not less than four inches of loosened subgrade soils. Final stabilization shall be considered achieved once the site grading is complete and all vegetation is established. Vegetation shall not be considered established until ground cover is demonstrated to be mature enough to control soil erosion (70% of original vegetated cover). Hill Single-Family FDP210005 Section 5 5 Inspection and Maintenance Site inspections will be performed to effectively address maintenance, repair, and adequacy of BMPs. The site inspections will be performed by the SWMP administrator or her designee a minimum of once every 14 calendar days on active construction sites and within 24 hours after a significant storm event (resulting in soil or wind erosion). As part of site inspections, the inspector will keep documentation of all inspections and BMP maintenance, including updated site maps indicating new BMPs or the removal of BMPs since the previous inspection. Blank site maps will be utilized and will be redlined by SWMP administrator throughout construction to note all BMPs, pollutant sources, storage locations, etc. Any maintenance, repair, or necessary installation of BMPs not noted during the inspection must begin immediately. The modifications shall be noted in the SWMP and action taken because of the inspection shall be noted and certified on or attached to the original inspection report. The date and time of repair or change (start and finish) will be required in report. 5.1 City of Fort Collins Standard Erosion and Sediment Control Notes 1. The City Stormwater Department erosion control inspector must be notified at least 24 hours prior to any construction on this site. 2. All required BMPs shall be installed prior to any land disturbing activity (stockpiling, stripping, grading, etc.). All of their required erosion control measures shall be installed at the appropriate time in the construction sequence as indicated in the approved project schedule, construction plans, and erosion control report. 3. Pre-disturbance vegetation shall be protected and retained wherever possible. Removal or disturbance of existing vegetation shall be limited to the area required for immediate construction operations, and for the shortest practical period of time. 4. All soils exposed during land disturbing activity (stripping, grading, stockpiling, filling, etc.) shall be kept in a roughened condition by ripping or disking along land contours until mulch, vegetation, or other permanent erosion control is installed. No soils in areas outside project street rights of way shall remain exposed by land disturbing activity for more than thirty (30) days before required temporary or permanent erosion control (e.g., seed/mulch, landscaping, etc.) is installed, unless otherwise approved by the Stormwater Department. 5. The project must be watered and maintained at all times during construction activities so as to prevent wind-caused erosion. All land disturbing activities shall be Hill Single-Family FDP210005 Section 5 immediately discontinued when fugitive dust impacts adjacent properties, as determined by the City Engineering Department. 6. All temporary (structural) erosion control measures must be inspected and repaired or reconstructed as necessary after each runoff event and every 14 days in order to assure continued performance of their intended function. All retained sediments, particularly those on paved roadway surfaces, shall be removed and disposed of in a manner and location so as not to cause their release into any drainage way. 7. No stockpile shall exceed ten (10) feet in height. All soil stockpiles shall be protected from sediment transport by surface roughening, watering, and perimeter silt fencing. Any soil stockpile remaining after 30 days shall be seeded and mulched. 8. City Ordinance prohibits the tracking, dropping, or depositing of soils or any other material onto city streets by or from any vehicle. Any inadvertent deposited material shall be cleaned immediately by the contractor. 5.2 City of Fort Collins Erosion Control Security Calculations The cost of erosion control for the site was compared to the cost to reseed the entire site and the greater cost was used to establish the erosion control escrow amount. The cost to reseed the site is estimated at $1,862.66. Using a multiplier of 1.5 the erosion control escrow amount would be $2,793.99. The site erosion control cost is estimated at $2,200. Using a multiplier of 1.5, the erosion control escrow amount would be $3,300. The larger sum of the erosion control versus the reseeding cost shall be used for the final escrow account, which is $3,300. See Appendix E for a break-down of the costs associated with seeding and erosion control. Hill Single-Family FDP210005 Section 6 6 SWMP Implementation It is the responsibility of the project’s contractor to operate and maintain all facilities and systems of treatment and control installed to achieve compliance with the conditions of the SWMP permit. This includes, but is not limited to, effective performance, adequate funding, plus adequate staffing and training. All personnel on the construction site who will be able to affect or be affected by the SWMP shall be trained prior to beginning work. These individuals will be given general orientation information regarding the project and SWMP, shown where the SWMP is physically located, the SWMP will be explained to them and available for their review, and the enforcement policy will be reviewed. After this training, a certification that the employee or subcontractor’s employee is familiar with the document and its procedures will be signed. Throughout construction, as a part of a weekly safety meeting, the SWMP will be reviewed with all attendees and any incidents discussed. All attendees shall be logged. 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Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available 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 15, Jun 9, 2020 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. Hydrologic Soil Group—Larimer County Area, Colorado (Hill Single-Family) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 35 Fort Collins loam, 0 to 3 percent slopes C 1.1 26.0% 36 Fort Collins loam, 3 to 5 percent slopes C 1.3 31.0% 76 Nunn clay loam, wet, 1 to 3 percent slopes C 1.8 43.0% Totals for Area of Interest 4.3 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: 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. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Hydrologic Soil Group—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 3 of 4 Rating Options Aggregation Method: Dominant Condition Aggregation is the process by which a set of component attribute values is reduced to a single value that represents the map unit as a whole. A map unit is typically composed of one or more "components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be rendered. Aggregation must be done because, on any soil map, map units are delineated but components are not. For each of a map unit's components, a corresponding percent composition is recorded. A percent composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, percent composition is set to the sum of the percent composition of all components participating in that group. These groups now represent "conditions" rather than components. The attribute value associated with the group with the highest cumulative percent composition is returned. If more than one group shares the highest cumulative percent composition, the corresponding "tie-break" rule determines which value should be returned. The "tie-break" rule indicates whether the lower or higher group value should be returned in the case of a percent composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. Component Percent Cutoff: None Specified Components whose percent composition is below the cutoff value will not be considered. If no cutoff value is specified, all components in the database will be considered. The data for some contrasting soils of minor extent may not be in the database, and therefore are not considered. Tie-break Rule: Higher The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a percent composition tie. Hydrologic Soil Group—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 4 of 4 K Factor, Whole Soil—Larimer County Area, Colorado (Hill Single-Family) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 1 of 54484390448442044844504484480448451044845404484570448460044846304484660448469044843904484420448445044844804484510448454044845704484600448463044846604484690497080497110497140497170497200497230497260497290 497080 497110 497140 497170 497200 497230 497260 497290 40° 30' 46'' N 105° 2' 4'' W40° 30' 46'' N105° 1' 54'' W40° 30' 36'' N 105° 2' 4'' W40° 30' 36'' N 105° 1' 54'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 50 100 200 300 Feet 0 20 40 80 120 Meters Map Scale: 1:1,500 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 Rating Polygons .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available Soil Rating Lines .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available Soil Rating Points .02 .05 .10 .15 .17 .20 .24 .28 .32 .37 .43 .49 .55 .64 Not rated or not available 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 15, Jun 9, 2020 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. K Factor, Whole Soil—Larimer County Area, Colorado (Hill Single-Family) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 2 of 5 K Factor, Whole Soil Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 35 Fort Collins loam, 0 to 3 percent slopes .43 1.1 26.0% 36 Fort Collins loam, 3 to 5 percent slopes .43 1.3 31.0% 76 Nunn clay loam, wet, 1 to 3 percent slopes .24 1.8 43.0% Totals for Area of Interest 4.3 100.0% Description 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 saturated hydraulic conductivity (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 (whole soil)" indicates the erodibility of the whole soil. The estimates are modified by the presence of rock fragments. Factor K does not apply to organic horizons and is not reported for those layers. Rating Options Aggregation Method: Dominant Condition K Factor, Whole Soil—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 3 of 5 Aggregation is the process by which a set of component attribute values is reduced to a single value that represents the map unit as a whole. A map unit is typically composed of one or more "components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be rendered. Aggregation must be done because, on any soil map, map units are delineated but components are not. For each of a map unit's components, a corresponding percent composition is recorded. A percent composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, percent composition is set to the sum of the percent composition of all components participating in that group. These groups now represent "conditions" rather than components. The attribute value associated with the group with the highest cumulative percent composition is returned. If more than one group shares the highest cumulative percent composition, the corresponding "tie-break" rule determines which value should be returned. The "tie-break" rule indicates whether the lower or higher group value should be returned in the case of a percent composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. Component Percent Cutoff: None Specified Components whose percent composition is below the cutoff value will not be considered. If no cutoff value is specified, all components in the database will be considered. The data for some contrasting soils of minor extent may not be in the database, and therefore are not considered. Tie-break Rule: Higher The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a percent composition tie. Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable) K Factor, Whole Soil—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 4 of 5 For an attribute of a soil horizon, a depth qualification must be specified. In most cases it is probably most appropriate to specify a fixed depth range, either in centimeters or inches. The Bottom Depth must be greater than the Top Depth, and the Top Depth can be greater than zero. The choice of "inches" or "centimeters" only applies to the depth of soil to be evaluated. It has no influence on the units of measure the data are presented in. When "Surface Layer" is specified as the depth qualifier, only the surface layer or horizon is considered when deriving a value for a component, but keep in mind that the thickness of the surface layer varies from component to component. When "All Layers" is specified as the depth qualifier, all layers recorded for a component are considered when deriving the value for that component. Whenever more than one layer or horizon is considered when deriving a value for a component, and the attribute being aggregated is a numeric attribute, a weighted average value is returned, where the weighting factor is the layer or horizon thickness. K Factor, Whole Soil—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 5 of 5 Wind Erodibility Group—Larimer County Area, Colorado (Hill Single-Family) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 1 of 44484390448442044844504484480448451044845404484570448460044846304484660448469044843904484420448445044844804484510448454044845704484600448463044846604484690497080497110497140497170497200497230497260497290 497080 497110 497140 497170 497200 497230 497260 497290 40° 30' 46'' N 105° 2' 4'' W40° 30' 46'' N105° 1' 54'' W40° 30' 36'' N 105° 2' 4'' W40° 30' 36'' N 105° 1' 54'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 50 100 200 300 Feet 0 20 40 80 120 Meters Map Scale: 1:1,500 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 Rating Polygons 1 2 3 4 4L 5 6 7 8 Not rated or not available Soil Rating Lines 1 2 3 4 4L 5 6 7 8 Not rated or not available Soil Rating Points 1 2 3 4 4L 5 6 7 8 Not rated or not available 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 15, Jun 9, 2020 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. Wind Erodibility Group—Larimer County Area, Colorado (Hill Single-Family) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 2 of 4 Wind Erodibility Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 35 Fort Collins loam, 0 to 3 percent slopes 5 1.1 26.0% 36 Fort Collins loam, 3 to 5 percent slopes 5 1.3 31.0% 76 Nunn clay loam, wet, 1 to 3 percent slopes 6 1.8 43.0% Totals for Area of Interest 4.3 100.0% Description A wind erodibility group (WEG) consists 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. Rating Options Aggregation Method: Dominant Condition Aggregation is the process by which a set of component attribute values is reduced to a single value that represents the map unit as a whole. A map unit is typically composed of one or more "components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be rendered. Aggregation must be done because, on any soil map, map units are delineated but components are not. For each of a map unit's components, a corresponding percent composition is recorded. A percent composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. Wind Erodibility Group—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 3 of 4 The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, percent composition is set to the sum of the percent composition of all components participating in that group. These groups now represent "conditions" rather than components. The attribute value associated with the group with the highest cumulative percent composition is returned. If more than one group shares the highest cumulative percent composition, the corresponding "tie-break" rule determines which value should be returned. The "tie-break" rule indicates whether the lower or higher group value should be returned in the case of a percent composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. Component Percent Cutoff: None Specified Components whose percent composition is below the cutoff value will not be considered. If no cutoff value is specified, all components in the database will be considered. The data for some contrasting soils of minor extent may not be in the database, and therefore are not considered. Tie-break Rule: Lower The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a percent composition tie. Wind Erodibility Group—Larimer County Area, Colorado Hill Single-Family Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/6/2021 Page 4 of 4 APPENDIX C FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANSUTILITY PLANS FOR LOT 2, BLEHM SUBDIVISION 2ND FILING BEING A REPLAT OF LOT 5, BLEHM SUBDIVISION Situate in the Southwest Quarter of Section 5, Township 6 North, Range 68 West of the 6th P.M. City of Fort Collins, County of Larimer, State of Colorado MAY 2021 I HEREBY AFFIRM THAT THESE FINAL CONSTRUCTION PLANS WERE PREPARED UNDER MY DIRECT SUPERVISION, IN ACCORDANCE WITH ALL APPLICABLE CITY OF FORT COLLINS AND STATE OF COLORADO STANDARDS AND STATUTES, RESPECTIVELY; AND THAT I AM FULLY RESPONSIBLE FOR THE ACCURACY OF ALL DESIGN, REVISIONS, AND RECORD CONDITIONS THAT I HAVE NOTED ON THESE PLANS. GENERAL INDEMNIFICATION STATEMENT: THESE PLANS HAVE BEEN REVIEWED BY THE LOCAL ENTITY FOR CONCEPT ONLY. THE REVIEW DOES NOT IMPLY RESPONSIBILITY BY THE REVIEWING DEPARTMENT, THE LOCAL ENTITY ENGINEER, OR THE LOCAL ENTITY FOR ACCURACY AND CORRECTNESS OF THE CALCULATIONS. FURTHERMORE, THE REVIEW DOES NOT IMPLY THAT QUANTITIES OF ITEMS ON THE PLANS ARE THE FINAL QUANTITIES REQUIRED. THE REVIEW SHALL NOT BE CONSTRUED IN ANY REASON AS ACCEPTANCE OF FINANCIAL RESPONSIBILITY BY THE LOCAL ENTITY FOR ADDITIONAL QUANTITIES OF ITEMS SHOWN THAT MAY BE REQUIRED DURING THE CONSTRUCTION PHASE. PROJECT BENCHMARK PROJECT DATUM: NAVD88 BENCHMARK #16-01, SOUTH SIDE OF WILLOW SPRINGS WAY APPROXIMATELY 50 FT WEST OF THE INTERSECTION OF WILLOW SPRINGS WAY AND TIMBERLINE ROAD ON THE SOUTHWEST CORNER OF A STORM INLET. ELEVATION: 4956.98 FEET PLEASE NOTE: THIS PLAN SET IS USING NAVD88 FOR A VERTICAL DATUM. SURROUNDING DEVELOPMENTS HAVE USED NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) FOR THEIR VERTICAL DATUMS. IF NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) IS REQUIRED FOR ANY PURPOSE, THE FOLLOWING EQUATION SHOULD BE USED: NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) = NAVD88 - 3.19'. OWNER: CHRIS HILL 4112 LAKEFRONT DRIVE LOVELAND, COLORADO 80537 (970) 227-3112 CHILL004@YAHOO.COM CIVIL ENGINEER: KEEFE CIVIL MEGAN KEEFE, P.E. 3125 CROCKETT STREET FORT COLLINS, COLORADO 80526 (970) 215-6808 MEG@KEEFECIVIL.COM SURVEYOR: MAJESTIC SURVEYING STEVEN PARKS, PLS (970) 443-0882 STEVENP@MAJESTICSURVEYING.COM PROJECT LOCATION 1 OF 11COVER SHEETSheet Number Sheet Title 1 COVER SHEET 2 GENERAL NOTES 3 UTILITY PLAN 4 GRADING & EROSION CONTROL PLAN 5 GRADING & EROSION CONTROL PLAN 6 CULVERT PLAN AND PROFILE 7 CULVERT PLAN AND PROFILE 8 DRAINAGE EXHIBIT 9 UTILITY DETAIL SHEET 10 EROSION CONTROL NOTES 11 EROSION CONTROL DETAILS All changes, addendums, additions, deletions and modifications to these drawings must be approved, in writing, by the Fort Collins-Loveland Water District and the South Fort Collins Sanitation District. District Engineer Date FORT COLLINS - LOVELAND WATER DISTRICT SOUTH FORT COLLINS SANITATION DISTRICT FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS2 OF 11GENERAL NOTESGENERAL NOTES: 1.ALL MATERIALS, WORKMANSHIP, AND CONSTRUCTION OF PUBLIC IMPROVEMENTS SHALL MEET OR EXCEED THE STANDARDS AND SPECIFICATIONS SET FORTH IN THE LARIMER COUNTY URBAN AREA STREET STANDARDS AND APPLICABLE STATE AND FEDERAL REGULATIONS. WHERE THERE IS CONFLICT BETWEEN THESE PLANS AND THE SPECIFICATIONS, OR ANY APPLICABLE STANDARDS, THE MOST RESTRICTIVE STANDARD SHALL APPLY. ALL WORK SHALL BE INSPECTED AND APPROVED BY THE LOCAL ENTITY. 2.ALL REFERENCES TO ANY PUBLISHED STANDARDS SHALL REFER TO THE LATEST REVISION OF SAID STANDARD, UNLESS SPECIFICALLY STATED OTHERWISE. 3.THESE PUBLIC IMPROVEMENT CONSTRUCTION PLANS SHALL BE VALID FOR A PERIOD OF THREE YEARS FROM THE DATE OF APPROVAL BY THE LOCAL ENTITY ENGINEER. USE OF THESE PLANS AFTER THE EXPIRATION DATE WILL REQUIRE A NEW REVIEW AND APPROVAL PROCESS BY THE LOCAL ENTITY PRIOR TO COMMENCEMENT OF ANY WORK SHOWN IN THESE PLANS. 4.THE ENGINEER WHO HAS PREPARED THESE PLANS, BY EXECUTION AND/OR SEAL HEREOF, DOES HEREBY AFFIRM RESPONSIBILITY TO THE LOCAL ENTITY, AS BENEFICIARY OF SAID ENGINEER'S WORK, FOR ANY ERRORS AND OMISSIONS CONTAINED IN THESE PLANS, AND APPROVAL OF THESE PLANS BY THE LOCAL ENTITY ENGINEER SHALL NOT RELIEVE THE ENGINEER WHO HAS PREPARED THESE PLANS OF ALL SUCH RESPONSIBILITY. FURTHER, TO THE EXTENT PERMITTED BY LAW, THE ENGINEER HEREBY AGREES TO HOLD HARMLESS AND INDEMNIFY THE LOCAL ENTITY, AND ITS OFFICERS AND EMPLOYEES, FROM AND AGAINST ALL LIABILITIES, CLAIMS, AND DEMANDS WHICH MAY ARISE FROM ANY ERRORS AND OMISSIONS CONTAINED IN THESE PLANS. 5.ALL SANITARY SEWER, STORM SEWER, AND WATER LINE CONSTRUCTION, AS WELL AS POWER AND OTHER “DRY” UTILITY INSTALLATIONS, SHALL CONFORM TO THE LOCAL ENTITY STANDARDS AND SPECIFICATIONS CURRENT AT THE DATE OF APPROVAL OF THE PLANS BY THE LOCAL ENTITY ENGINEER. 6.THE TYPE, SIZE, LOCATION AND NUMBER OF ALL KNOWN UNDERGROUND UTILITIES ARE APPROXIMATE WHEN SHOWN ON THE DRAWINGS. IT SHALL BE THE RESPONSIBILITY OF THE DEVELOPER TO VERIFY THE EXISTENCE AND LOCATION OF ALL UNDERGROUND UTILITIES ALONG THE ROUTE OF THE WORK BEFORE COMMENCING NEW CONSTRUCTION. THE DEVELOPER SHALL BE RESPONSIBLE FOR UNKNOWN UNDERGROUND UTILITIES. 7.THE ENGINEER SHALL CONTACT THE UTILITY NOTIFICATION CENTER OF COLORADO (UNCC) AT 1-800-922-1987, AT LEAST 2 WORKING DAYS PRIOR TO BEGINNING EXCAVATION OR GRADING, TO HAVE ALL REGISTERED UTILITY LOCATIONS MARKED. OTHER UNREGISTERED UTILITY ENTITIES (I.E. DITCH / IRRIGATION COMPANY) ARE TO BE LOCATED BY CONTACTING THE RESPECTIVE REPRESENTATIVE. UTILITY SERVICE LATERALS ARE ALSO TO BE LOCATED PRIOR TO BEGINNING EXCAVATION OR GRADING. IT SHALL BE THE RESPONSIBILITY OF THE DEVELOPER TO RELOCATE ALL EXISTING UTILITIES THAT CONFLICT WITH THE PROPOSED IMPROVEMENTS SHOWN ON THESE PLANS. 8.THE DEVELOPER SHALL BE RESPONSIBLE FOR PROTECTING ALL UTILITIES DURING CONSTRUCTION AND FOR COORDINATING WITH THE APPROPRIATE UTILITY COMPANY FOR ANY UTILITY CROSSINGS REQUIRED. 9.IF A CONFLICT EXISTS BETWEEN EXISTING AND PROPOSED UTILITIES AND/OR A DESIGN MODIFICATION IS REQUIRED, THE DEVELOPER SHALL COORDINATE WITH THE ENGINEER TO MODIFY THE DESIGN. DESIGN MODIFICATION(S) MUST BE APPROVE D BY THE LOCAL ENTITY PRIOR TO BEGINNING CONSTRUCTION. 10.THE DEVELOPER SHALL COORDINATE AND COOPERATE WITH THE LOCAL ENTITY, AND ALL UTILITY COMPANIES INVOLVED, TO ASSURE THAT THE WORK IS ACCOMPLISHED IN A TIMELY FASHION AND WITH A MINIMUM DISRUPTION OF SERVICE. THE DEVELOPER SHALL BE RESPONSIBLE FOR CONTACTING, IN ADVANCE, ALL PARTIES AFFECTED BY ANY DISRUPTION OF ANY UTILITY SERVICE AS WELL AS THE UTILITY COMPANIES. 11.NO WORK MAY COMMENCE WITHIN ANY PUBLIC STORM WATER, SANITARY SEWER OR POTABLE WATER SYSTEM UNTIL THE DEVELOPER NOTIFIES THE UTILITY PROVIDER. NOTIFICATION SHALL BE A MINIMUM OF 2 WORKING DAYS PRIOR TO COMMENCEMENT OF ANY WORK. AT THE DISCRETION OF THE WATER UTILITY PROVIDER, A PRE-CONSTRUCTION MEETING MAY BE REQUIRED PRIOR TO COMMENCEMENT OF ANY WORK. 12.THE DEVELOPER SHALL SEQUENCE INSTALLATION OF UTILITIES IN SUCH A MANNER AS TO MINIMIZE POTENTIAL UTILITY CONFLICTS. IN GENERAL, STORM SEWER AND SANITARY SEWER SHOULD BE CONSTRUCTED PRIOR TO INSTALLATION OF THE WATER LINES AND DRY UTILITIES. 13.THE MINIMUM COVER OVER WATER LINES IS 4.5 FEET AND THE MAXIMUM COVER IS 5.5 FEET UNLESS OTHERWISE NOTED IN THE PLAN S AND APPROVED BY THE WATER UTILITY. 14.A STATE CONSTRUCTION DEWATERING WASTEWATER DISCHARGE PERMIT IS REQUIRED IF DEWATERING IS REQUIRED IN ORDER TO INSTALL UTILITIES OR WATER IS DISCHARGED INTO A STORM SEWER, CHANNEL, IRRIGATION DITCH OR ANY WATERS OF THE UNITED STATES. 15.THE DEVELOPER SHALL COMPLY WITH ALL TERMS AND CONDITIONS OF THE COLORADO PERMIT FOR STORM WATER DISCHARGE (CONTACT COLORADO DEPARTMENT OF HEALTH, WATER QUALITY CONTROL DIVISION, (303) 692-3590), THE STORM WATER MANAGEMENT PLAN, AND THE EROSION CONTROL PLAN. 16.THE LOCAL ENTITY SHALL NOT BE RESPONSIBLE FOR THE MAINTENANCE OF STORM DRAINAGE FACILITIES LOCATED ON PRIVATE PROPERTY. MAINTENANCE OF ONSITE DRAINAGE FACILITIES SHALL BE THE RESPONSIBILITY OF THE PROPERTY OWNER(S). 17.PRIOR TO FINAL INSPECTION AND ACCEPTANCE BY THE LOCAL ENTITY, CERTIFICATION OF THE DRAINAGE FACILITIES, BY A REGISTERED ENGINEER, MUST BE SUBMITTED TO AND APPROVED BY THE STORMWATER UTILITY DEPARTMENT. CERTIFICATION SHALL BE SUBMITTED TO THE STORMWATER UTILITY DEPARTMENT AT LEAST TWO WEEKS PRIOR TO THE RELEASE OF A CERTIFICATE OF OCCUPANCY FOR SINGLE FAMILY UNITS. FOR COMMERCIAL PROPERTIES, CERTIFICATION SHALL BE SUBMITTED TO THE STORMWATER UTILITY DEPARTMENT AT LEAST TWO WEEKS PRIOR TO THE RELEASE OF ANY BUILDING PERMITS IN EXCESS OF THOSE ALLOWED PRIOR TO CERTIFICATION PER THE DEVELOPMENT AGREEMENT. 18.THE LOCAL ENTITY SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES OR INJURIES SUSTAINED IN THIS DEVELOPMENT AS A RESULT OF GROUNDWATER SEEPAGE, WHETHER RESULTING FROM GROUNDWATER FLOODING, STRUCTURAL DAMAGE OR OTHER DAMAGE UNLESS SUCH DAMAGE OR INJURIES ARE SUSTAINED AS A RESULT OF THE LOCAL ENTITY FAILURE TO PROPERLY MAINTAIN ITS WATER, WASTEWATER, AND/OR STORM DRAINAGE FACILITIES IN THE DEVELOPMENT. 19.ALL RECOMMENDATIONS OF THE FINAL DRAINAGE AND EROSION CONTROL MEMO DATED MAY 5, 2021 BY KEEFE CIVIL SHALL BE FOLLOWED AND IMPLEMENTED. 20.TEMPORARY EROSION CONTROL DURING CONSTRUCTION SHALL BE PROVIDED AS SHOWN ON THE EROSION CONTROL PLAN. ALL EROSION CONTROL MEASURES SHALL BE MAINTAINED IN GOOD REPAIR BY THE DEVELOPER, UNTIL SUCH TIME AS THE ENTIRE DISTURBED AREAS IS STABILIZED WITH HARD SURFACE OR LANDSCAPING. 21.THE DEVELOPER SHALL BE RESPONSIBLE FOR INSURING THAT NO MUD OR DEBRIS SHALL BE TRACKED ONTO THE EXISTING PUBLIC STREET SYSTEM. MUD AND DEBRIS MUST BE REMOVED WITHIN 24 HOURS BY AN APPROPRIATE MECHANICAL METHOD (I.E. MACHINE BROOM SWEEP, LIGHT DUTY FRONT-END LOADER, ETC.) OR AS APPROVED BY THE LOCAL ENTITY STREET INSPECTOR. 22.NO WORK MAY COMMENCE WITHIN ANY IMPROVED OR UNIMPROVED PUBLIC RIGHT-OF-WAY UNTIL A RIGHT-OF-WAY PERMIT OR DEVELOPMENT CONSTRUCTION PERMIT IS OBTAINED, IF APPLICABLE. 23.THE DEVELOPER SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS FOR ALL APPLICABLE AGENCIES PRIOR TO COMMENCEMENT OF CONSTRUCTION. THE DEVELOPER SHALL NOTIFY THE LOCAL ENTITY ENGINEERING INSPECTOR (FORT COLLINS - 221-6605) AND THE LOCAL ENTITY EROSION CONTROL INSPECTOR (FORT COLLINS - 221-6700) AT LEAST 2 WORKING DAYS PRIOR TO THE START OF ANY EARTH DISTURBING ACTIVITY, OR CONSTRUCTION ON ANY AND ALL PUBLIC IMPROVEMENTS. IF THE LOCAL ENTITY ENGINEER IS NOT AVAILABLE AFTER PROPER NOTICE OF CONSTRUCTION ACTIVITY HAS BEEN PROVIDED, THE DEVELOPER MAY COMMENCE WORK IN THE ENGINEER ABSENCE. HOWEVER, THE LOCAL ENTITY RESERVES THE RIGHT NOT TO ACCEPT THE IMPROVEMENT IF SUBSEQUENT TESTING REVEALS AN IMPROPER INSTALLATION. 24.THE DEVELOPER SHALL BE RESPONSIBLE FOR OBTAINING SOILS TESTS WITHIN THE PUBLIC RIGHT-OF-WAY AFTER RIGHT-OF-WAY GRADING AND ALL UTILITY TRENCH WORK IS COMPLETE AND PRIOR TO THE PLACEMENT OF CURB, GUTTER, SIDEWALK AND PAVEMENT. IF THE FINAL SOILS/PAVEMENT DESIGN REPORT DOES NOT CORRESPOND WITH THE RESULTS OF THE ORIGINAL GEOTECHNICAL REPORT, THE DEVELOPER SHALL BE RESPONSIBLE FOR A RE-DESIGN OF THE SUBJECT PAVEMENT SECTION OR, THE DEVELOPER MAY USE THE LOCAL ENTITY'S DEFAULT PAVEMENT THICKNESS SECTION(S). REGARDLESS OF THE OPTION USED, ALL FINAL SOILS/PAVEMENT DESIGN REPORTS SHALL BE PREPARED BY A LICENSED PROFESSIONAL ENGINEER. THE FINAL REPORT SHALL BE SUBMITTED TO THE INSPECTOR A MINIMUM OF 10 WORKING DAYS PRIOR TO PLACEMENT OF BASE AND ASPHALT. PLACEMENT OF CURB, GUTTER, SIDEWALK, BASE AND ASPHALT SHALL NOT OCCUR UNTIL THE LOCAL ENTITY ENGINEER APPROVES THE FINAL REPORT. 25.THE CONTRACTOR SHALL HIRE A LICENSED ENGINEER OR LAND SURVEYOR TO SURVEY THE CONSTRUCTED ELEVATIONS OF THE STREET SUBGRADE AND THE GUTTER FLOWLINE AT ALL INTERSECTIONS, INLETS, AND OTHER LOCATIONS REQUESTED BY THE LOCAL ENTITY INSPECTOR. THE ENGINEER OR SURVEYOR MUST CERTIFY IN A LETTER TO THE LOCAL ENTITY THAT THESE ELEVATIONS CONFORM TO THE APPROVED PLANS AND SPECIFICATIONS. ANY DEVIATIONS SHALL BE NOTED IN THE LETTER AND THEN RESOLVED WITH THE LOCAL ENTITY BEFORE INSTALLATION OF BASE COURSE OR ASPHALT WILL BE ALLOWED ON THE STREETS. 26.ALL UTILITY INSTALLATIONS WITHIN OR ACROSS THE ROADBED OF NEW RESIDENTIAL ROADS MUST BE COMPLETED PRIOR TO THE FINAL STAGES OF ROAD CONSTRUCTION. FOR THE PURPOSES OF THESE STANDARDS, ANY WORK EXCEPT C/G ABOVE THE SUBGRADE IS CONSIDERED FINAL STAGE WORK. ALL SERVICE LINES MUST BE STUBBED TO THE PROPERTY LINES AND MARKED SO AS TO REDUCE THE EXCAVATION NECESSARY FOR BUILDING CONNECTIONS. 27.PORTIONS OF LARIMER COUNTY ARE WITHIN OVERLAY DISTRICTS. THE LARIMER COUNTY FLOODPLAIN RESOLUTION SHOULD BE REFERRED TO FOR ADDITIONAL CRITERIA FOR ROADS WITHIN THESE DISTRICTS. 28.ALL ROAD CONSTRUCTION IN AREAS DESIGNATED AS WILD FIRE HAZARD AREAS SHALL BE DONE IN ACCORDANCE WITH THE CONSTRUCTION CRITERIA AS ESTABLISHED IN THE WILD FIRE HAZARD AREA MITIGATION REGULATIONS IN FORCE AT THE TIME OF FINAL PLAT APPROVAL. 29.PRIOR TO THE COMMENCEMENT OF ANY CONSTRUCTION, THE CONTRACTOR SHALL CONTACT THE LOCAL ENTITY FORESTER TO SCHEDULE A SITE INSPECTION FOR ANY TREE REMOVAL REQUIRING A PERMIT. 30.THE DEVELOPER SHALL BE RESPONSIBLE FOR ALL ASPECTS OF SAFETY INCLUDING, BUT NOT LIMITED TO, EXCAVATION, TRENCHING, SHORING, TRAFFIC CONTROL, AND SECURITY. REFER TO OSHA PUBLICATION 2226, EXCAVATING AND TRENCHING. 31.THE DEVELOPER SHALL SUBMIT A CONSTRUCTION TRAFFIC CONTROL PLAN, IN ACCORDANCE WITH MUTCD, TO THE APPROPRIATE RIGHT-OF-WAY AUTHORITY. (LOCAL ENTITY, COUNTY OR STATE), FOR APPROVAL, PRIOR TO ANY CONSTRUCTION ACTIVITIES WITHIN, OR AFFECTING, THE RIGHT-OF-WAY. THE DEVELOPER SHALL BE RESPONSIBLE FOR PROVIDING ANY AND ALL TRAFFIC CONTROL DEVICES AS MAY BE REQUIRED BY THE CONSTRUCTION ACTIVITIES. 32.PRIOR TO THE COMMENCEMENT OF ANY CONSTRUCTION THAT WILL AFFECT TRAFFIC SIGNS OF ANY TYPE, THE CONTRACTOR SHALL CONTACT LOCAL ENTITY TRAFFIC OPERATIONS DEPARTMENT, WHO WILL TEMPORARILY REMOVE OR RELOCATE THE SIGN AT NO COST TO THE CONTRACTOR; HOWEVER, IF THE CONTRACTOR MOVES THE TRAFFIC SIGN THEN THE CONTRACTOR WILL BE CHARGED FOR THE LABOR, MATERIALS AND EQUIPMENT TO REINSTALL THE SIGN AS NEEDED. 33.THE DEVELOPER IS RESPONSIBLE FOR ALL COSTS FOR THE INITIAL INSTALLATION OF TRAFFIC SIGNING AND STRIPING FOR THE DEVELOPMENT RELATED TO THE DEVELOPMENT'S LOCAL STREET OPERATIONS. IN ADDITION, THE DEVELOPER IS RESPONSIBLE FOR ALL COSTS FOR TRAFFIC SIGNING AND STRIPING RELATED TO DIRECTING TRAFFIC ACCESS TO AND FROM THE DEVELOPMENT. 34.THERE SHALL BE NO SITE CONSTRUCTION ACTIVITIES ON SATURDAYS, UNLESS SPECIFICALLY APPROVED BY THE LOCAL ENTITY ENGINEER, AND NO SITE CONSTRUCTION ACTIVITIES ON SUNDAYS OR HOLIDAYS, UNLESS THERE IS PRIOR WRITTEN APPROVAL BY THE LOCAL ENTITY. 35.THE DEVELOPER IS RESPONSIBLE FOR PROVIDING ALL LABOR AND MATERIALS NECESSARY FOR THE COMPLETION OF THE INTENDED IMPROVEMENTS, SHOWN ON THESE DRAWINGS, OR DESIGNATED TO BE PROVIDED, INSTALLED, OR CONSTRUCTED, UNLESS SPECIFICALLY NOTED OTHERWISE. 36.DIMENSIONS FOR LAYOUT AND CONSTRUCTION ARE NOT TO BE SCALED FROM ANY DRAWING. IF PERTINENT DIMENSIONS ARE NOT SHOWN, CONTACT THE DESIGNER FOR CLARIFICATION, AND ANNOTATE THE DIMENSION ON THE AS-BUILT RECORD DRAWINGS. 37.THE DEVELOPER SHALL HAVE, ONSITE AT ALL TIMES, ONE (1) SIGNED COPY OF THE APPROVED PLANS, ONE (1) COPY OF THE APPROPRIATE STANDARDS AND SPECIFICATIONS, AND A COPY OF ANY PERMITS AND EXTENSION AGREEMENTS NEEDED FOR THE JOB. 38.IF, DURING THE CONSTRUCTION PROCESS, CONDITIONS ARE ENCOUNTERED WHICH COULD INDICATE A SITUATION THAT IS NOT IDENTIFIED IN THE PLANS OR SPECIFICATIONS, THE DEVELOPER SHALL CONTACT THE DESIGNER AND THE LOCAL ENTITY ENGINEER IMMEDIATELY. 39.THE DEVELOPER SHALL BE RESPONSIBLE FOR RECORDING AS-BUILT INFORMATION ON A SET OF RECORD DRAWINGS KEPT ON THE CONSTRUCTION SITE, AND AVAILABLE TO THE LOCAL ENTITY'S INSPECTOR AT ALL TIMES. UPON COMPLETION OF THE WORK, THE CONTRACTOR(S) SHALL SUBMIT RECORD DRAWINGS TO THE LOCAL ENTITY ENGINEER. 40.THE DESIGNER SHALL PROVIDE, IN THIS LOCATION ON THE PLAN, THE LOCATION AND DESCRIPTION OF THE NEAREST SURVEY BENCHMARKS (2) FOR THE PROJECT AS WELL AS THE BASIS OF BEARINGS. THE INFORMATION SHALL BE AS FOLLOWS: PROJECT DATUM: NAVD88 BENCHMARK #16-01, SOUTH SIDE OF WILLOW SPRINGS WAY APPROXIMATELY 50 FT WEST OF THE INTERSECTION OF WILLOW SPRINGS WAY AND TIMBERLINE ROAD ON THE SOUTHWEST CORNER OF A STORM INLET. ELEVATION: 4956.98 FEET PLEASE NOTE: THIS PLAN SET IS USING NAVD88 FOR A VERTICAL DATUM. SURROUNDING DEVELOPMENTS HAVE USED NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) FOR THEIR VERTICAL DATUMS. IF NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) IS REQUIRED FOR ANY PURPOSE, THE FOLLOWING EQUATION SHOULD BE USED: NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) = NAVD88 - 3.19'. 41.ALL STATIONING IS BASED ON CENTERLINE OF ROADWAYS UNLESS OTHERWISE NOTED. 42.DAMAGED CURB, GUTTER AND SIDEWALK EXISTING PRIOR TO CONSTRUCTION, AS WELL AS EXISTING FENCES, TREES, STREETS, SIDEWALKS, CURBS AND GUTTERS, LANDSCAPING, STRUCTURES, AND IMPROVEMENTS DESTROYED, DAMAGED OR REMOVED DUE TO CONSTRUCTION OF THIS PROJECT, SHALL BE REPLACED OR RESTORED IN LIKE KIND AT THE DEVELOPER'S EXPENSE, UNLESS OTHERWISE INDICATED ON THESE PLANS, PRIOR TO THE ACCEPTANCE OF COMPLETED IMPROVEMENTS AND/OR PRIOR TO THE ISSUANCE OF THE FIRST CERTIFICATE OF OCCUPANCY. 43.WHEN AN EXISTING ASPHALT STREET MUST BE CUT, THE STREET MUST BE RESTORED TO A CONDITION EQUAL TO OR BETTER THAN ITS ORIGINAL CONDITION. THE EXISTING STREET CONDITION SHALL BE DOCUMENTED BY THE LOCAL ENTITY CONSTRUCTION INSPECTOR BEFORE ANY CUTS ARE MADE. PATCHING SHALL BE DONE IN ACCORDANCE WITH THE LOCAL ENTITY STREET REPAIR STANDARDS. THE FINISHED PATCH SHALL BLEND IN SMOOTHLY INTO THE EXISTING SURFACE. ALL LARGE PATCHES SHALL BE PAVED WITH AN ASPHALT LAY-DOWN MACHINE. IN STREETS WHERE MORE THAN ONE CUT IS MADE, AN OVERLAY OF THE ENTIRE STREET WIDTH, INCLUDING THE PATCHED AREA, MAY BE REQUIRED. THE DETERMINATION OF NEED FOR A COMPLETE OVERLAY SHALL BE MADE BY THE LOCAL ENTITY ENGINEER AND/OR THE LOCAL ENTITY INSPECTOR AT THE TIME THE CUTS ARE MADE. 44.UPON COMPLETION OF CONSTRUCTION, THE SITE SHALL BE CLEANED AND RESTORED TO A CONDITION EQUAL TO, OR BETTER THAN, THAT WHICH EXISTED BEFORE CONSTRUCTION, OR TO THE GRADES AND CONDITION AS REQUIRED BY THESE PLANS. 45.STANDARD HANDICAP RAMPS ARE TO BE CONSTRUCTED AT ALL CURB RETURNS AND AT ALL “T” INTERSECTIONS. 46.AFTER ACCEPTANCE BY THE LOCAL ENTITY, PUBLIC IMPROVEMENTS DEPICTED IN THESE PLANS SHALL BE GUARANTEED TO BE FREE FROM MATERIAL AND WORKMANSHIP DEFECTS FOR A MINIMUM PERIOD OF TWO YEARS FROM THE DATE OF ACCEPTANCE. 47.THE LOCAL ENTITY SHALL NOT BE RESPONSIBLE FOR THE MAINTENANCE OF ROADWAY AND APPURTENANT IMPROVEMENTS, INCLUDING STORM DRAINAGE STRUCTURES AND PIPES, FOR THE FOLLOWING PRIVATE STREETS: NOT APPLICABLE. 48.APPROVED VARIANCES ARE LISTED AS FOLLOWS: NOT APPLICABLE. FORT COLLINS - LOVELAND WATER DISTRICT AND SOUTH FORT COLLINS SANITATION DISTRICT NOTES: 49.ALL WATER AND SANITARY SEWER CONSTRUCTION SHALL BE PERFORMED ACCORDING TO THE FORT COLLINS-LOVELAND WATER DISTRICT AND THE SOUTH FORT COLLINS SANITATION DISTRICT STANDARDS AND SPECIFICATIONS. 50.CONSTRUCTION OF WATER AND SEWER FACILITIES REQUIRE A PRECON MEETING WITH DISTRICT OPERATIONS STAFF PRIOR TO CONSTRUCTION. 51.CONTRACTOR SHALL NOTIFY DISTRICT INSPECTORS PRIOR TO STARTING WORK. 52.CONTRACTOR SHALL CONTACT THE SANITATION DISTRICT FOR SEWER INSPECTION 48 HOURS PRIOR TO CONNECTING TO EXISTING SEWER STUBS. 53.IF GROUNDWATER IS ENCOUNTERED WITHIN DEPTH OF SEWER CONSTRUCTION, MANHOLES MUST BE WATER-PROOFED. 54.CONTRACTOR SHALL CONTACT THE WATER DISTRICT FOR WATER INSPECTION 48 HOURS PRIOR TO CONNECTING TO EXISTING INFRASTRUCTURE. 55.ALL COMMERCIAL DOMESTIC SERVICES REQUIRE A REDUCED PRESSURE BACKFLOW PREVENTION DEVICE. 56.ALL WATER LINES SHALL BE A MINIMUM OF (5) FIVE FEET AND A MAXIMUM OF (6) SIX FEET BELOW FINAL GRADE. 57.ALL DISTRICT VALVES SHALL ONLY BE OPERATED BY DISTRICT OPERATIONS STAFF. 58.PIPE PRESSURE AND VACUUM TESTING SHALL BE WITNESSED BY DISTRICT INSPECTORS. WATERLINE BACTERIA TESTS SHALL ALSO BE TAKEN BY DISTRICT INSPECTORS. 59.ONCE THE SYSTEM IS OPERATIONAL AND ALL TESTS HAVE PASSED, CONTRACTOR SHALL REQUEST SUBSTANTIAL COMPLETION WITH A LETTER TO THE DISTRICT THAT INCLUDES THE DOLLAR VALUE OF THE WATER AND SEWER IMPROVEMENTS LISTED SEPARATELY. 60.AS-BUILTS SHALL BE SUBMITTED IN PDF AND DWG TO THE DISTRICT FOR FINAL APPROVAL. COMMON AREA CKECHTER CROSSING M.L.D.LOT 6BLEHM SUBDIVISIONLOT 4BLEHM SUBDIVISIONSTETSON CREEK P.U.D.FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANSKECHTER ROAD CENTERLINELEGEND: 3 OF 11UTILITY PLANABBREVIATION LEGEND: LOT 2 4.011 ACRES LOT 1 2.385 ACRES SWEETWATERCREEK DRIVEKADENWOOD DRIVE COMMON AREA CKECHTER CROSSING M.L.D.RS RSKECHTER ROAD CENTERLINE4 OF 11 LOT 2 4.011 ACRES LOT 1 2.385 ACRES FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANSGRADING & EROSION CONTROL PLANMATCHLINE - SEE SHEET 5ABBREVIATION LEGEND: LEGEND: BMP CONTROLS: SF SP VTC PSPS CWA PS VTC SF RS LOT 6BLEHM SUBDIVISIONSTETSON CREEK P.U.D.RS RS RS RS RS FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS5 OF 11 LOT 2 4.011 ACRES SWEETWATERCREEK DRIVEGRADING & EROSION CONTROL PLANABBREVIATION LEGEND: LEGEND:MATCHLINE - SEE SHEET 4BMP CONTROLS: SF SP VTC PSPS CWA PS PS PS SF SP CWA SP CWA RS FORT COLLINS, COLORADOSHEETKEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS6 OF 11CULVERT PLAN AND PROFILEPROPOSED SHARED ACCESS DRIVEWAY CULVERTS 1 & 2PROPOSED SHARED ACCESS DRIVEWAY CULVERT 3CULVERT 2 PROFILEHORIZONTAL SCALE: 1"=10'VERTICAL SCALE 1"=5'CULVERT 1CULVERT 2CULVERT 1 PROFILEHORIZONTAL SCALE: 1"=10'VERTICAL SCALE 1"=5'CULVERT 3** CAUTION: OVERHEADELECTRICAL LINES **CULVERT 3 PROFILEHORIZONTAL SCALE: 1"=10'VERTICAL SCALE 1"=5' FORT COLLINS, COLORADOSHEETKEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS7 OF 11CULVERT PLAN AND PROFILECULVERT 4 PROFILEHORIZONTAL SCALE: 1"=10'VERTICAL SCALE 1"=5' LOT 6BLEHM SUBDIVISIONLOT 4BLEHM SUBDIVISIONSTETSON CREEK P.U.D.FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS8 OF 11 LOT 2 4.011 ACRES SWEETWATERCREEK DRIVEDRAINAGE EXHIBITLEGEND: FOR DRAINAGE REVIEW ONLY NOT FOR CONSTRUCTION LOT 1 FUTURE SAGE CREEK ROAD2 1 1 3 BLEHM SUBDIVISION LOT 6 BLEHM SUBDIVISION LOT 4 FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS9 OF 11UTILITY DETAIL SHEET FORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS10 OF 11EROSION CONTROL NOTESGENERAL EROSION CONTROL NOTES: 1)THE PROPERTY OWNER, OWNER'S REPRESENTATIVE, DEVELOPER, DESIGN ENGINEER, GENERAL CONTRACTOR, SUB-CONTRACTORS, OR SIMILAR TITLE FOR THE DEVELOPING ENTITY (HERE AFTER REFERRED TO AS THE DEVELOPER) HAS PROVIDED THESE EROSION CONTROL MATERIALS IN ACCORDANCE WITH EROSION CONTROL CRITERIA SET FORTH IN THE MANUAL AS AN ATTEMPT TO IDENTIFY EROSION, SEDIMENT, AND OTHER POTENTIAL POLLUTANT SOURCES ASSOCIATED WITH THESE CONSTRUCTION ACTIVITIES AND PREVENTING THOSE POLLUTANTS FROM LEAVING THE PROJECT SITE AS AN ILLICIT DISCHARGE. FULL CITY REQUIREMENTS AND ARE OUTLINED AND CLARIFIED IN THE MANUAL UNDER CHAPTER 4: CONSTRUCTION CONTROL MEASURES AND SHOULD BE USED TO IDENTIFY AND DEFINE WHAT IS NEEDED ON A PROJECT. 2)THE DEVELOPER SHALL MAKE THEMSELVES THOROUGHLY FAMILIAR WITH THE PROVISIONS AND THE CONTENT OF THE SPECIFICATIONS LAID OUT IN THE MANUAL, THE DEVELOPMENT AGREEMENT, THE EROSION CONTROL MATERIALS COMPILED FOR THIS PROJECT, AND THE FOLLOWING NOTES AS ALL THESE MATERIALS ARE APPLICABLE TO THIS PROJECT. 3)THE DEVELOPER SHALL IMPLEMENT AND MAINTAIN CONTROL MEASURES FOR ALL POTENTIAL POLLUTANTS FROM THE START OF LAND DISTURBING ACTIVITIES UNTIL FINAL STABILIZATION OF THE CONSTRUCTION SITE. 4)THE CITY EROSION CONTROL INSPECTOR SHALL BE NOTIFIED AT LEAST TWENTY-FOUR (24) HOURS PRIOR TO THE DESIRED START OF ANY CONSTRUCTION ACTIVITIES ON THIS SITE TO ALLOW ADEQUATE TIME FOR ON-SITE CONFIRMATION (INITIAL INSPECTION WHICH CAN TAKE UP TO TWO BUSINESS DAYS AFTER RECEIVING THE REQUEST) THAT THE SITE IS IN FACT PROTECTED FROM SEDIMENT AND POLLUTANTS DISCHARGES OFF SITE. PLEASE CONTACT EROSION@FCGOV.COM EARLY TO SCHEDULE THOSE INITIAL EROSION CONTROL INSPECTIONS WELL IN ADVANCE SO THAT DEMOLITION, CLEARING, GRUBBING, TREE REMOVAL, AND SCRAPING MAY BEGIN WITHOUT DELAY. FAILURE TO RECEIVE AN ON-SITE CONFIRMATION BEFORE CONSTRUCTION ACTIVITIES COMMENCE IS AN AUTOMATIC “NOTICE OF VIOLATION” AND CAN RESULT IN FURTHER ENFORCEMENT ACTIONS. 5)THE DEVELOPER SHALL PROACTIVELY PROVIDE ALL APPROPRIATE CONTROL MEASURES TO PREVENT DAMAGE TO ADJACENT DOWNSTREAM AND LEEWARD PROPERTIES. THIS INCLUDES BUT IS NOT LIMITED TO: TREES, SHRUBS, LAWNS, WALKS, PAVEMENTS, ROADWAYS, STRUCTURES, CREEKS, WETLANDS, STREAMS, RIVERS, AND UTILITIES THAT ARE NOT DESIGNED FOR REMOVAL, RELOCATION, OR REPLACEMENT IN THE COURSE OF CONSTRUCTION. 6)AT ALL TIMES THE DEVELOPER SHALL BE RESPONSIBLE TO ENSURE ADEQUATE CONTROL MEASURES ARE DESIGNED, SELECTED, INSTALLED, MAINTAIN, REPAIRED, REPLACED, AND ULTIMATELY REMOVED IN ORDER TO PREVENT AND CONTROL EROSION SUSPENSION, SEDIMENT TRANSPORTATION, AND POLLUTANT DISCHARGE AS A RESULT OF CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PROJECT. 7)ALL APPLICABLE CONTROL MEASURES BASED UPON THE SEQUENCING AND/OR PHASING OF THE PROJECT SHALL BE INSTALLED PRIOR TO THOSE CONSTRUCTION ACTIVITIES COMMENCING. 8)AS DYNAMIC CONDITIONS (DUE TO THE NATURE, TIMING, SEQUENCE, AND PHASING OF CONSTRUCTION) IN THE FIELD MAY WARRANT CONTROL MEASURES IN ADDITION, OR DIFFERENT, TO WHAT IS SHOWN ON THESE PLANS, THE DEVELOPER SHALL AT ALL TIMES BE RESPONSIBLE TO IMPLEMENT THE CONTROL MEASURES THAT ARE MOST EFFECTIVE WITH THE CURRENT STATE AND PROGRESS OF CONSTRUCTION. THE DEVELOPER SHALL IMPLEMENT WHATEVER MEASURES ARE DETERMINED NECESSARY, AND/OR AS DIRECTED BY THE CITY EROSION CONTROL INSPECTOR. THE DEVELOPER SHALL INSURE THAT ALL EROSION CONTROL PLANS (MAPS) OR SWMP DOCUMENTS ARE UPDATED TO REFLECT THE CURRENT SITE CONDITIONS, WITH UPDATES BEING INITIALED AND DATED. THESE SITE INSPECTIONS AND SITE CONDITION UPDATES SHALL BE MADE AVAILABLE UPON REQUEST BY THE CITY. 9)ALL LISTINGS, PROVISIONS, MATERIALS, PROCEDURES, ACTIVITIES, SITE WORK AND THE LIKE ARTICULATED IN THIS OR OTHER WRITTEN SITE-SPECIFIC DOCUMENTS (INCLUDING BUT NOT LIMITED TO THE EROSION CONTROL REPORTS, DEVELOPMENT AGREEMENTS, LANDSCAPE, AND DRAINAGE MATERIALS) SHALL MEET OR EXCEED THE MOST RESTRICTIVE LANGUAGE FOR CITY, COUNTY, STATE, AND FEDERAL REGULATIONS WITH REGARDS TO EROSION, SEDIMENT, POLLUTANT, AND OTHER POLLUTION SOURCE CONTROL MEASURES. THE DEVELOPER SHALL BE RESPONSIBLE TO COMPLY WITH ALL OF THESE AFOREMENTIONED LAWS AND REGULATIONS. 10)THE DEVELOPER SHALL ENSURE THAT ALL APPROPRIATE PERMITS (CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY, DEWATERING, CLEAN WATER ACT, ARMY CORPS OF ENGINEERS' 404 WETLANDS MITIGATION PERMIT, ETC.) HAVE BEEN ATTAINED PRIOR TO THE RELEVANT ACTIVITY HAS BEGUN. THESE PERMITS OR COPIES SHALL BE MADE AVAILABLE UPON REQUEST BY THE CITY. 11)THE DEVELOPER SHALL FURNISH ALL CONVENIENCES AND ASSISTANCE TO AID THE EROSION CONTROL INSPECTORS OF MATERIALS, WORKMANSHIP, RECORDS, AND SELF-INSPECTIONS, ETC. OF THE CONTROL MEASURES INVOLVED IN THE CONSTRUCTION ACTIVITIES. 12)THE DEVELOPER SHALL REQUEST CLARIFICATION OF ALL APPARENT SITE CONSTRUCTION ISSUES THAT MAY ARISE DUE TO INCONSISTENCIES IN CONSTRUCTION PLANS FOR THE SITE OR SITE CONDITIONS AROUND THE SELECTED CONTROL MEASURES BY CONTACTING THE EROSION CONTROL INSPECTOR. THE EROSION CONTROL INSPECTOR WILL NOT BE RESPONSIBLE FOR ANY EXPLANATIONS, INTERPRETATIONS, OR SUPPLEMENTARY DATA PROVIDED BY OTHERS. 13)ALL CONTROL MEASURES SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUAL. 14)THE CITY RESERVES THE RIGHT TO REQUIRE ADDITIONAL CONTROL MEASURES AS SITE CONDITIONS WARRANT, TO THE EXTENT AUTHORIZED BY RELEVANT LEGAL AUTHORITY. 15)AS WITH ANY CONSTRUCTION STANDARDS, OCCASIONS MAY ARISE WHERE THE MINIMUM EROSION CONTROL STANDARDS ARE EITHER INAPPROPRIATE OR CANNOT BE JUSTIFIED. IN THESE CASES, A VARIANCE TO THESE STANDARDS MAY BE APPLIED FOR PURSUANT TO THE TERMS, CONDITIONS, AND PROCEDURES OF THE MANUAL. 16)INSPECTION. THE CONTRACTOR SHALL INSPECT SITE POLLUTANT SOURCES AND IMPLEMENT CONTROL MEASURES AT A MINIMUM OF ONCE EVERY TWO WEEKS DURING CONSTRUCTION AND WITHIN 24 HOURS FOLLOWING A PRECIPITATION EVENT. DOCUMENTATION OF EACH INSPECTION SHALL BE RECORDED AND RETAINED BY THE CONTRACTOR. 17)ALL TEMPORARY CONTROL MEASURES SHALL BE CLEANED, REPAIRED, OR RECONSTRUCTED AS NECESSARY IN ORDER TO ASSURE CONTINUAL PERFORMANCE OF THEIR INTENDED FUNCTION. ALL RETAINED SEDIMENTS, PARTICULARLY THOSE ON PAVED ROADWAY SURFACES, SHALL BE REMOVED AND DISPOSED OF IN A MANNER AND LOCATION SO AS NOT TO CAUSE THEIR RELEASE INTO ANY DRAINAGE WAY. 18)ANY CONTROL MEASURE MAY BE SUBSTITUTED FOR ANOTHER STANDARD CONTROL MEASURE SO LONG AS THAT CONTROL MEASURE IS EQUAL TO, OR OF GREATER PROTECTION THAN THE ORIGINAL CONTROL MEASURE THAT WAS TO BE USED IN THAT LOCATION. (EX. SILT FENCE, FOR WATTLES, OR FOR COMPACT BERMS) WATTLE ALONE ON COMMERCIAL CONSTRUCTION SITES HAVE SHOWN TO BE AN INEFFECTIVE SUBSTITUTE FOR SILT FENCE OR COMPACT BERMS UNLESS IT IS ACCOMPANIED BY A CONSTRUCTION FENCE TO PREVENT VEHICLE TRAFFIC. 19)ANY IMPLEMENTATION OR REPLACEMENT OF EXISTING CONTROL MEASURES FOR A NON-STANDARD CONTROL, OR ALTERNATIVE CONTROL MEASURE, SHALL REQUIRE THE REVIEW AND ACCEPTANCE BY THE CITY EROSION CONTROL STAFF BEFORE THE MEASURE WILL BE ALLOWED TO BE USED ON THIS PROJECT. THESE CONTROL MEASURES' DETAILS SHALL BE SUBMITTED, REVIEWED AND ACCEPTED TO BE IN ACCORDANCE WITH THE EROSION CONTROL CRITERIA BASED UPON THE FUNCTIONALITY AND EFFECTIVENESS IN ACCORDANCE WITH SOUND ENGINEERING AND HYDROLOGICAL PRACTICES. LAND DISTURBANCE, STOCKPILES, AND STORAGE OF SOILS 20)THERE SHALL BE NO EARTH-DISTURBING ACTIVITY OUTSIDE THE LIMITS DESIGNATED ON THE ACCEPTED PLANS. OFF ROAD STAGING AREAS OR STOCKPILES MUST BE PREAPPROVED BY THE CITY. DISTURBANCES BEYOND THESE LIMITS WILL BE RESTORED TO ORIGINAL CONDITION. 21)PRE-DISTURBANCE VEGETATION SHALL BE IDENTIFIED, PROTECTED, AND RETAINED WHEREVER POSSIBLE. REMOVAL OR DISTURBANCE OF EXISTING VEGETATION SHALL BE LIMITED TO THE AREA REQUIRED FOR IMMEDIATE CONSTRUCTION OPERATIONS, AND FOR THE SHORTEST PRACTICAL PERIOD OF TIME. THIS SHOULD INCLUDE SEQUENCING AND PHASING CONSTRUCTION ACTIVITIES IN A WAY SO THAT THE SOIL IS NOT EXPOSED FOR LONG PERIODS OF TIME BY SCHEDULE OR LIMIT GRADING TO SMALL AREAS. THIS SHOULD ALSO INCLUDE WHEN PRACTICAL ADVANCING THE SCHEDULE ON STABILIZATION ACTIVITIES SUCH THAT LANDSCAPING TAKES PLACE SHORTLY IF NOT IMMEDIATELY AFTER GRADING HAS OCCURRED. VEGETATION EFFORTS SHALL START AS SOON AS POSSIBLE TO RETURN THE SITE TO A STABILIZED CONDITION. SENSITIVE AREAS SHOULD AVOID CLEARING AND GRADING ACTIVITIES AS MUCH POSSIBLE. 22)ALL EXPOSED SOILS OR DISTURBED AREAS ARE CONSIDERED A POTENTIAL POLLUTANT AND SHALL HAVE CONTROL MEASURES IMPLEMENTED ON THE SITE TO PREVENT MATERIALS FROM LEAVING THE SITE. 23)ALL SOILS EXPOSED DURING LAND DISTURBING ACTIVITY (STRIPPING, GRADING, UTILITY INSTALLATIONS, STOCKPILING, FILLING, ETC.) SHALL BE KEPT IN A ROUGHENED CONDITION AT ALL TIMES BY EQUIPMENT TRACKING, SCARIFYING OR DISKING THE SURFACE ON A CONTOUR WITH A 2 TO 4 INCH MINIMUM VARIATION IN SOIL SURFACE UNTIL MULCH, VEGETATION, AND/OR OTHER PERMANENT EROSION CONTROL IS INSTALLED. 24)NO SOIL STOCKPILE SHALL EXCEED TEN (10) FEET IN HEIGHT. ALL SOIL STOCKPILES SHALL BE PROTECTED FROM SEDIMENT TRANSPORT THROUGH THE USE OF SURFACE ROUGHENING, WATERING, AND DOWN GRADIENT PERIMETER CONTROLS. ALL SOIL STOCKPILES SHALL BE PROTECTED FROM SEDIMENT TRANSPORT BY WIND IN ACCORDANCE WITH MUNICIPAL CODE §12-150. ALL STOCKPILES SHALL BE FLATTENED TO MEET GRADE OR REMOVED FROM SITE AS SOON AS PRACTICAL, AND NO LATER THAN THE COMPLETION OF CONSTRUCTION ACTIVITIES OR ABANDONMENT OF THE PROJECT. ALL OFF-SITE STOCKPILE STORAGE LOCATIONS IN CITY LIMITS SHALL HAVE A STOCKPILE PERMIT FROM THE CITY ENGINEERING DEPARTMENT PRIOR TO USING THE AREA TO STORE MATERIAL. IF FREQUENT ACCESS FROM HARDSCAPE TO THE STOCKPILE IS NEEDED A STRUCTURAL TRACKING CONTROL MEASURE SHALL BE IMPLEMENTED. 25)ALL REQUIRED CONTROL MEASURES SHALL BE INSTALLED PRIOR TO ANY LAND DISTURBING ACTIVITY (STOCKPILING, STRIPPING, GRADING, ETC.). ALL OF THE REQUIRED EROSION CONTROL MEASURES MUST BE INSTALLED AT THE APPROPRIATE TIME IN THE CONSTRUCTION SEQUENCE AS INDICATED IN THE APPROVED PROJECT SCHEDULE, CONSTRUCTION PLANS, AND EROSION CONTROL REPORT. 26)ALL INLETS, CURB-CUTS, CULVERTS, AND OTHER STORM SEWER INFRASTRUCTURE WHICH COULD BE POTENTIALLY IMPACTED BY CONSTRUCTION ACTIVITIES SHALL BE PROTECTED WITH CONTROL MEASURES. MATERIAL ACCUMULATED FROM THIS CONTROL MEASURE SHALL BE PROMPTLY REMOVED AND IN CASES WHERE THE PROTECTION HAS FAILED, THE PIPES SHALL BE THOROUGHLY CLEANED OUT. 27)ALL STREAMS, STREAM CORRIDORS, BUFFERS, WOODLANDS, WETLANDS, OR OTHER SENSITIVE AREAS SHALL BE PROTECTED FROM IMPACT BY ANY CONSTRUCTION ACTIVITY THROUGH THE USE OF CONTROL MEASURES. 28)ALL EXPOSED DIRT SHALL HAVE PERIMETER CONTROL. ANY PERIMETER CONTROLS THAT DRAIN OFF OR HAS THE ABILITY TO BE TRACKED ONTO THE NEARBY HARDSCAPE SHALL HAVE SOME FORM OF EFFECTIVE SEDIMENT CONTROL AS THE, OR AS PART OF THE, PERIMETER CONTROL. 29)ALL EXPOSED SLOPES SHOULD BE PROTECTED. ALL EXPOSED STEEP SLOPES (STEEPER THAN 3:1 H:V) SHALL BE PROTECTED FROM EROSION AND SEDIMENT TRANSPORT THROUGH USE OF CONTROL MEASURES. 30)NO SOILS SHALL REMAIN EXPOSED BY LAND DISTURBING ACTIVITY FOR MORE THAN THIRTY (30) DAYS AFTER ACTIVITY HAS CEASED BEFORE REQUIRED TEMPORARY SEEDING OR PERMANENT EROSION CONTROL (E.G. SEED/MULCH, LANDSCAPING, ETC.) IS INSTALLED. THIS IS NOT JUST LIMITED TO PROJECTS THAT ARE ABANDONED; THIS INCLUDES ANY PROJECT THAT IS TEMPORARILY HALTED AND NO IMMEDIATE ACTIVITY IS TO RESUME WITHIN THE NEXT THIRTY (30) DAYS, UNLESS OTHERWISE APPROVED BY THE CITY EROSION CONTROL INSPECTOR. DURING A SEASON WHEN SEEDING DOES NOT PRODUCE VEGETATIVE COVER, ANOTHER TEMPORARY EROSION CONTROL SHALL BE IMPLEMENTED WITH OR UNTIL TEMPORARY SEEDING OR PERMANENT EROSION CONTROL CAN BE PERFORMED. 31)ALL INDIVIDUAL LOTS SHALL HAVE EFFECTIVE SEDIMENT CONTROLS LOCATED ON THE STREET SIDE AND ANY DOWN GRADIENT SIDE. TYPICALLY MOST LOTS DRAIN TO THE FRONT YET ON THOSE CASES WHERE HOUSES ARE ALONG A POND OR DRAINAGE SWALE HAVE THE LOT DRAIN IN A DIFFERENT DIRECTION THAN THE STREET, THOSE INDIVIDUAL LOTS WILL NEED PROTECTION ON THAT DOWN GRADIENT SIDE TO PREVENT SEDIMENT FROM LEAVING THE LOT. SEE THE INDIVIDUAL LOT DETAILS FOR FURTHER CLARIFICATION. VEHICLE TRACKING 32)AT ALL POINTS WHERE VEHICLES EXIT OR LEAVE THE EXPOSED DIRT AREA ON TO A HARDSCAPE OR SEMI HARDSCAPE (CONCRETE, ASPHALT, ROAD BASE, ETC.) SHALL HAVE INSTALLED AT LEAST ONE STRUCTURAL TRACKING CONTROL MEASURE TO PREVENT VEHICLE TRACKING. ALL AREAS NOT PROTECTED BY AN ADEQUATE PERIMETER CONTROL SHALL BE CONSIDERED A POINT WHERE VEHICLES EXIT THE SITE. ACCESS POINTS SHOULD BE LIMITED TO AS FEW ENTRANCES AS POSSIBLE (ALL PERIMETER AREAS SHALL BE PROTECTED FROM TRACKING ACTIVITIES). 33)IN ALL AREAS THAT THE STRUCTURAL TRACKING CONTROL MEASURES FAIL TO PREVENT VEHICLE TRACKING, COLLECTION AND PROPER DISPOSAL OF THAT MATERIAL IS REQUIRED. ALL INLETS LOCATED NEAR ACCESS POINTS AND AFFECTED BY TRACKING ACTIVITIES SHALL BE PREVENTED FROM THE INTRODUCTION OF SEDIMENT INTO THE DRAINAGE SYSTEM. 34)CITY MUNICIPAL CODE §20-62, AMONG OTHER THINGS, PROHIBITS THE TRACKING, DROPPING, OR DEPOSITING OF SOILS OR ANY OTHER MATERIAL ONTO CITY STREETS BY OR FROM ANY SOURCE. CITY MUNICIPAL CODE, §26-498, AMONG OTHER THINGS, PROHIBITS THE DISCHARGE OF POLLUTANTS ON PUBLIC OR PRIVATE PROPERTY IF THERE IS A SIGNIFICANT POTENTIAL FOR MIGRATION OF SUCH POLLUTANT. THEREFORE, ALL TRACKED OR DEPOSITED MATERIALS (INTENTIONAL OR INADVERTENT) ARE NOT PERMITTED TO REMAIN ON THE STREET OR GUTTER AND SHALL BE REMOVED AND LEGALLY DISPOSED OF BY THE DEVELOPER IN A TIMELY AND IMMEDIATE MANNER. DIRT RAMPS INSTALLED IN THE CURB-LINES ARE NOT EXEMPT TO THESE SECTIONS OF CODE AND SHALL NOT BE PERMITTED IN THE STREET RIGHT OF WAY (PUBLIC OR PRIVATE). 35)IF REPEATED DEPOSIT OF MATERIAL OCCURS ON A SITE, ADDITIONAL STRUCTURAL TRACKING CONTROLS MAY BE REQUIRED OF THE DEVELOPER BY THE CITY EROSION CONTROL INSPECTOR. LOADING AND UNLOADING OPERATIONS 36)THE DEVELOPER SHALL APPLY CONTROL MEASURE TO LIMIT TRAFFIC (SITE WORKER OR PUBLIC) IMPACTS AND PROACTIVELY LOCATE MATERIAL DELIVERED TO THE SITE IN CLOSE PROXIMITY TO THE WORK AREA OR IMMEDIATELY INCORPORATED IN THE CONSTRUCTION TO LIMIT OPERATIONAL IMPACTS TO DISTURBED AREAS, VEHICLE TRACKING, AND SEDIMENT DEPOSITION THAT COULD IMPACT WATER QUALITY. OUTDOOR STORAGE OR CONSTRUCTION SITE MATERIALS, BUILDING MATERIALS, FERTILIZERS, AND CHEMICALS 37)ANY MATERIALS OF A NON-POLLUTING NATURE (STEEL, ROCK, BRICK, LUMBER, ETC.) SHALL BE INSPECTED FOR ANY RESIDUE COMING OFF THE MATERIAL DURING ROUTINE INSPECTION AND WILL GENERALLY BE LOCATED WHERE PRACTICAL AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM DRAINAGE WAYS. 38)ANY HIGH ENVIRONMENTAL IMPACT POLLUTANT MATERIALS THAT HAVE A HIGH LIKELIHOOD TO RESULT IN DISCHARGE WHEN IN CONTACT WITH STORMWATER (LUBRICANTS, FUELS, PAINTS, SOLVENTS, DETERGENTS, FERTILIZERS, CHEMICAL SPRAYS, BAGS OF CEMENT MIX, ETC.) SHOULD NOT BE KEPT ON SITE WHERE PRACTICAL. WHEN NOT PRACTICAL, THEY SHOULD BE STORED INSIDE (VEHICLE, TRAILER, CONNEX, BUILDING, ETC.) AND OUT OF CONTACT WITH STORMWATER OR STORMWATER RUNOFF. WHERE NOT AVAILABLE, THEY SHALL BE STORED OUTSIDE IN A RAISED (HIGH SPOTS OR ON PALLETS), COVERED (PLASTIC OR TARPED), AND SEALED (LEAK PROOF CONTAINER) IN SECONDARY CONTAINMENT LOCATION. THE SECONDARY CONTAINMENT OR OTHER CONTROL MEASURE SHALL BE ADEQUATELY SIZED, LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. VEHICLE AND EQUIPMENT MAINTENANCE AND FUELING 39)PARKING, REFUELING, AND MAINTENANCE OF VEHICLES AND EQUIPMENT SHOULD BE LIMITED IN ONE AREA OF THE SITE TO MINIMIZE POSSIBLE SPILLS AND FUEL STORAGE AREAS. THIS AREA SHALL BE LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. ALL AREAS SHALL KEEP SPILL KITS AND SUPPLIES CLOSE. SIGNIFICANT DUST OR PARTICULATE GENERATING PROCESS 40)THE PROPERTY MUST BE ACTIVELY PREVENTING THE EMISSION OF FUGITIVE DUST AT ALL TIMES DURING CONSTRUCTION AND VEGETATION ACTIVITIES. ALL LAND DISTURBING ACTIVITIES THAT RESULT IN FUGITIVE DUST SHALL BE IN ACCORDANCE WITH MUNICIPAL CODE §12-150 TO REDUCE THE IMPACTS TO ADJACENT PROPERTIES AND COMMUNITY HEALTH. ALL REQUIRED PRACTICES SHALL BE IMPLEMENTED AND ADDITIONAL ONES SHALL BE FOLLOWED. THESE PRACTICES INCLUDE WATERING THE SITES AND DISCONTINUING CONSTRUCTION ACTIVITIES UNTIL THE WIND SUBSIDES AS DETERMINED BY ANY CITY INSPECTORS. CONCRETE TRUCK / EQUIPMENT WASHING, INCLUDING THE CONCRETE TRUCK CHUTE AND ASSOCIATED FIXTURES AND EQUIPMENT 41)ALL CONCRETE AND EQUIPMENT WASHING SHALL USE STRUCTURAL CONTROL MEASURES APPROPRIATE TO THE VOLUME OF WASH AND FREQUENCY OF USE. THESE CONTROL MEASURES SHALL BE LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. THESE AREAS SHALL BE CLEARLY IDENTIFIED AND PROTECTED FROM ANY WASH FROM LEAVING THE CONTROL MEASURE. IF FREQUENT ACCESS FROM HARDSCAPE TO THE CONTROL MEASURE IS TO OCCUR, A STRUCTURAL TRACKING CONTROL MEASURE SHALL BE IMPLEMENTED. THESE CONTROL MEASURES SHALL BE FREQUENTLY CLEANED OUT. 42)THE DEVELOPER IS RESPONSIBLE FOR ENSURING WASHING ACTIVITY IS TAKING PLACE AT THE APPROPRIATE CONTROL MEASURE AND SITE WORKERS ARE NOT WASHING OR DUMPING WASH WATER ON TO THE DIRT OR OTHER UNCONTROLLED LOCATIONS. DEDICATED ASPHALT AND CONCRETE BATCH PLANTS 43)DEDICATED ASPHALT AND CONCRETE BATCH PLANTS ARE NOT ACCEPTABLE ON CONSTRUCTION SITES WITHIN THE CITY OF FORT COLLINS WITHOUT AN EXPRESSED WRITTEN REQUEST AND PLAN TO REDUCE POLLUTANTS ASSOCIATED WITH THAT TYPE OF ACTIVITY AND APPROVAL BY THE CITY OF FORT COLLINS SPECIFICALLY THE EROSION CONTROL INSPECTOR. THE DEVELOPER SHALL INFORM THE EROSION CONTROL INSPECTION STAFF OF ANY DEDICATED ASPHALT, OR CONCRETE BATCH PLANTS THAT IS TO BE USED ON SITE. CONCRETE SAW CUTTING MATERIALS 44)SAW CUTTING MATERIAL SHALL BE IN ACCORDANCE WITH MUNICIPAL CODE §12-150 FOR AIR EMISSIONS AND ALL WATER APPLICATIONS TO THE SAW CUTTING SHALL PREVENT MATERIAL FROM LEAVING THE IMMEDIATE SITE AND COLLECTED. THESE CUTTING LOCATIONS, ONCE DRIED, SHALL BE SWEPT AND SCRAPED OF ALL MATERIAL AND SHALL HAVE PROPER AND LEGAL DISPOSAL. WASTE MATERIALS STORAGE AND SANITARY FACILITIES 45)TRASH, DEBRIS, MATERIAL SALVAGE, AND/OR RECYCLING AREAS SHALL BE, WHERE PRACTICAL, AT LEAST FIFTY (50)FEET FROM ANY PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. THESE FACILITIES SHOULD BE LOCATED OUT OF THE WIND AND COVERED AS ABLE. WHERE NOT ABLE TO COVER, LOCATING SAID AREAS ON THE SIDE OF OTHER STRUCTURES TO REDUCE EXPOSURE TO WINDS, AND FOLLOW MAXIMUM LOADING GUIDELINES AS MARKED ON THE CONTAINER. THE DEVELOPER IS REQUIRED TO PRACTICE GOOD HOUSEKEEPING TO KEEP THE CONSTRUCTION SITE FREE OF LITTER, CONSTRUCTION DEBRIS, AND LEAKING CONTAINERS. 46)SANITARY FACILITIES SHALL BE PREVENTED FROM TIPPING THROUGH THE USE OF ANCHORING TO THE GROUND OR LASHING TO A STABILIZED STRUCTURE. THESE FACILITIES SHALL ALSO BE LOCATED AS FAR AS PRACTICAL FROM AN INLET, CURB CUT, DRAINAGE SWALE OR OTHER DRAINAGE CONVEYANCES TO PREVENT MATERIAL TRANSPORT FROM LEAVING THE LOCAL AREA. THIS CONSISTS OF THE FACILITY BEING LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM DRAINAGE WAYS. OTHER SITE OPERATIONS AND POTENTIAL SPILL AREAS 47)SPILLS: FOR THOSE MINOR SPILLS THAT; ARE LESS THAN THE STATE'S REPORTABLE QUANTITY FOR SPILLS, STAY WITHIN THE PERMITTED AREA, AND IN NO WAY THREATEN ANY STORMWATER CONVEYANCE, NOTIFY THE CITY OF FORT COLLINS UTILITIES BY EMAIL AT EROSION@FCGOV.COM OR PHONE (970) 817-4770. FOR ANY SIGNIFICANT, MAJOR, OR HAZARDOUS SPILLS, NOTIFY THE CITY OF FORT COLLINS UTILITIES BY PHONE ONLY AFTER EMERGENCY RESPONSE (911) HAS BEEN NOTIFIED AND IS ON ROUTE, COUNTY HEALTH DEPARTMENT (LCDHE) HAS BEEN NOTIFIED THROUGH LARIMER COUNTY SHERIFF DISPATCH (970) 416-1985, AND THE STATE SPILL HOTLINE INCIDENT REPORTING HAVE BEEN CONTACTED 1-877-518-5608. WRITTEN DOCUMENTATION SHALL BE PROVIDED TO THE CITY WITHIN 5 DAYS OF THE EVENT. ALL SPILLS SHALL BE CLEANED UP IMMEDIATELY. 48)SELECTION OF “PLASTIC WELDED” EROSION CONTROL BLANKETS SHALL NOT BE USED IN AREAS THAT WILDLIFE, SUCH AS SNAKES, ARE LIKELY TO BE LOCATED AS THESE HAVE PROVEN TO CAUSE ENTRAPMENT ISSUES. FINAL STABILIZATION AND PROJECT COMPLETION 49)ANY STORMWATER FACILITIES USED AS A TEMPORARY CONTROL MEASURE WILL BE RESTORED AND STORM SEWER LINES WILL BE CLEANED UPON COMPLETION OF THE PROJECT AND BEFORE TURNING THE MAINTENANCE OVER TO THE OWNER, HOMEOWNERS ASSOCIATION (HOA), OR OTHER PARTY RESPONSIBLE FOR LONG TERM MAINTENANCE OF THOSE FACILITY. 50)ALL FINAL STABILIZATION SPECIFICATIONS SHALL BE DONE IN ACCORDANCE WITH THE MANUAL, CHAPTER 4: CONSTRUCTION CONTROL MEASURES. 51)ALL DISTURBED AREAS DESIGNED TO BE VEGETATED SHALL BE AMENDED, SEEDED & MULCHED, OR LANDSCAPED AS SPECIFIED IN THE LANDSCAPE PLANS WITHIN 14 WORKING DAYS OF FINAL GRADING. 52)SOIL IN ALL VEGETATED (LANDSCAPED OR SEEDED) AREAS, INCLUDING PARKWAYS AND MEDIANS SHALL COMPLY WITH ALL REQUIREMENTS SET FORTH IN SECTIONS 12-130 THROUGH 12-132 OF THE CITY MUNICIPAL CODE, AS WELL AS SECTION 3.8.21 FOR THE CITY LAND USE CODE. 53)ALL SEEDING SHALL REFER TO LANDSCAPING PLANS FOR SPECIES MIXTURE AND APPLICATION RATES AND DEPTHS REQUIREMENTS. 54)ALL SEED SHALL BE DRILLED WHERE PRACTICAL TO A DEPTH BASED UPON THE SEED TYPE. BROADCAST SEEDING SHALL BE APPLIED AT DOUBLE THE RATE AS PRESCRIBED FOR DRILL SEEDING AND SHALL BE LIGHTLY HAND RAKED AFTER APPLICATION. HYDROSEEDING MAY BE SUBSTITUTED FOR DRILL SEEDING ON SLOPES STEEPER THAN 3(H):1(V) OR ON OTHER AREAS NOT PRACTICAL TO DRILL SEED AND CRIMP AND MULCH. ALL HYDROSEEDING MUST BE CONDUCTED AS TWO SEPARATE PROCESSES OF SEEDING AND TACKIFICATION. 55)ALL SEEDED AREAS MUST BE MULCHED WITHIN TWENTY-FOUR (24) AFTER PLANTING. ALL MULCH SHALL BE MECHANICALLY CRIMPED AND OR ADEQUATELY APPLIED TACKIFIER. THE USE OF CRIMPED MULCH OR TACKIFIER MAY REQUIRE MULTIPLE RE-APPLICATIONS IF NOT PROPERLY INSTALLED OR HAVE WEATHERED OR DEGRADED BEFORE VEGETATION HAS BEEN ESTABLISHED. AREAS OF EMBANKMENTS HAVING SLOPES GREATER THAN OR EQUAL TO 3H:1V SHALL BE STABILIZED WITH AN EROSION MAT OR APPROVED EQUAL TO ENSURE SEED WILL BE ABLE TO GERMINATE ON THE STEEP SLOPES. DURING A SEASON WHEN SEEDING DOES NOT PRODUCE VEGETATIVE COVER, ANOTHER TEMPORARY EROSION CONTROL SHALL BE IMPLEMENTED ALONG WITH, OR UNTIL, TEMPORARY SEEDING OR PERMANENT EROSION CONTROL CAN BE PERFORMED. 56)THE DEVELOPER SHALL WARRANTY AND MAINTAIN ALL VEGETATIVE MEASURES FOR TWO GROWING SEASONS AFTER INSTALLATION OR UNTIL SEVENTY PERCENT (70%) VEGETATIVE COVER HAS BEEN ESTABLISHED, WHICHEVER IS LONGER AND MEETS ALL THE CRITERIA OUTLINED IN THE FORT COLLINS STORMWATER CRITERIA MANUAL CHAPTER 4: CONSTRUCTION CONTROL MEASURES. 57)THE DEVELOPER SHALL MAINTAIN, MONITOR, REPAIR, AND REPLACE ANY AND ALL APPLICABLE CONTROL MEASURES UNTIL FINAL STABILIZATION HAS BEEN OBTAINED. ALL CONTROL MEASURES MUST REMAIN UNTIL SUCH TIME AS ALL UPSTREAM CONTRIBUTING POLLUTANT SOURCES HAVE BEEN VEGETATED OR REMOVED FROM THE SITE. WHEN ANY CONTROL MEASURE IS REMOVED, THE DEVELOPER SHALL BE RESPONSIBLE FOR THE CLEANUP AND REMOVAL OF ALL SEDIMENT AND DEBRIS FROM THAT CONTROL MEASURE. AT THE POINT AT WHICH THE SITE HAS BEEN DEEMED STABILIZED AND VERIFIED BY CITY EROSION CONTROL INSPECTOR, ALL TEMPORARY CONTROL MEASURES CAN THEN BE FULLY REMOVED. ALL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL STABILIZATION IS ACHIEVED. 58)THE RESPONSIBLE PARTY SHALL MAINTAIN AND KEEP CURRENT ALL PAYMENTS OR RELATED FORMS OF SECURITY FOR THE EROSION CONTROL ESCROW UNTIL 1) STABILIZATION HAS BEEN REACHED AND 2) ALL CONTROL MEASURES AND/OR BMPS HAVE SEDIMENT MATERIALS COLLECTED AND THE CONTROL MEASURE REMOVED FROM THE SITE. AT THAT TIME THE SITE WILL BE CONSIDERED COMPLETED AND ANY REMAINING EROSION CONTROL ESCROW SHALL BE RETURNED TO THE APPROPRIATE PARTIES. 11 OF 11EROSION CONTROL DETAILSFORT COLLINS, COLORADOSHEET KEEFE CIVIL, INC3125 CROCKETT STREETFORT COLLINS, CO 80526(970) 215-6808MEG@KEEFECIVIL.COMLOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OFLOT 5, BLEHM SUBDIVISION UTILITY PLANS APPENDIX D Silt Fence (SF) SC-1 November 2010 Urban Drainage and Flood Control District SF-3 Urban Storm Drainage Criteria Manual Volume 3 SC-1 Silt Fence (SF) SF-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Rock Sock (RS) SC-5 November 2010 Urban Drainage and Flood Control District RS-1 Urban Storm Drainage Criteria Manual Volume 3 Photograph RS-1. Rock socks placed at regular intervals in a curb line can help reduce sediment loading to storm sewer inlets. Rock socks can also be used as perimeter controls. Description A rock sock is constructed of gravel that has been wrapped by wire mesh or a geotextile to form an elongated cylindrical filter. Rock socks are typically used either as a perimeter control or as part of inlet protection. When placed at angles in the curb line, rock socks are typically referred to as curb socks. Rock socks are intended to trap sediment from stormwater runoff that flows onto roadways as a result of construction activities. Appropriate Uses Rock socks can be used at the perimeter of a disturbed area to control localized sediment loading. A benefit of rock socks as opposed to other perimeter controls is that they do not have to be trenched or staked into the ground; therefore, they are often used on roadway construction projects where paved surfaces are present. Use rock socks in inlet protection applications when the construction of a roadway is substantially complete and the roadway has been directly connected to a receiving storm system. Design and Installation When rock socks are used as perimeter controls, the maximum recommended tributary drainage area per 100 lineal feet of rock socks is approximately 0.25 acres with disturbed slope length of up to 150 feet and a tributary slope gradient no steeper than 3:1. A rock sock design detail and notes are provided in Detail RS-1. Also see the Inlet Protection Fact Sheet for design and installation guidance when rock socks are used for inlet protection and in the curb line. When placed in the gutter adjacent to a curb, rock socks should protrude no more than two feet from the curb in order for traffic to pass safely. If located in a high traffic area, place construction markers to alert drivers and street maintenance workers of their presence. Maintenance and Removal Rock socks are susceptible to displacement and breaking due to vehicle traffic. Inspect rock socks for damage and repair or replace as necessary. Remove sediment by sweeping or vacuuming as needed to maintain the functionality of the BMP, typically when sediment has accumulated behind the rock sock to one-half of the sock's height. Once upstream stabilization is complete, rock socks and accumulated sediment should be removed and properly disposed. Rock Sock Functions Erosion Control No Sediment Control Yes Site/Material Management No SC-5 Rock Sock (RS) RS-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Rock Sock (RS) SC-5 November 2010 Urban Drainage and Flood Control District RS-3 Urban Storm Drainage Criteria Manual Volume 3 Stockpile Management (SP) MM-2 November 2010 Urban Drainage and Flood Control District SP-3 Urban Storm Drainage Criteria Manual Volume 3 MM-2 Stockpile Management (SM) SP-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Concrete Washout Area (CWA) MM-1 November 2010 Urban Drainage and Flood Control District CWA-3 Urban Storm Drainage Criteria Manual Volume 3 MM-1 Concrete Washout Area (CWA) CWA-4 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 Vehicle Tracking Control (VTC) SM-4 November 2010 Urban Drainage and Flood Control District VTC-3 Urban Storm Drainage Criteria Manual Volume 3 SM-4 Vehicle Tracking Control (VTC) VTC-6 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3 • • • • • • • • • • ✓ ✓ ✓ ✓ ✓ ✓ • • • • • https://cpw.state.co.us/Documents/ CNAP/RevegetationGuide.pdf * APPENDIX E Project:Disturbed Acres:2.59 EROSION CONTROL BMPs Estimated Quantity Units Unit Price Total Price 575 LF $2.00 $1,150.00 1 EA $500.00 $500.00 1 EA $500.00 $500.00 10 LF $5.00 $50.00 Sub-Total:$2,200.00 1.5 x Sub-Total:$3,300.00 Amount of security:$3,300.00 Total Acres x Price/acre:$1,862.66 $720.00 Sub-Total:$1,862.66 1.5 x Sub-Total:$2,793.99 Amount to Re-seed:$2,793.99 Minimum escrow amount:$1,500.00 Erosion Control Escrow:$3,300.00 Erosion and Sediment Control Escrow/Security Calculation for The City of Fort Collins BMP Amount Silt Fence (SF) Vehicle Tracking Control (VTC) Reseeding Amount Miniumum Escrow Amount Hill Single Family - FDP210005 Unit Price of Seeding per acre: “The amount of the security must be based on one and one-half times the estimate of the cost to install the approved measures, or one and one-half times the cost to re-vegetate the disturbed land to dry land grasses based upon unit cost determined by the City's Annual Revegetation and Stabilization Bid, whichever is greater. In no instance, will the amount of security be less than one thousand five hundred dollars ($1,500) for residential development or three thousand dollars ($3,000) for commercial development” Concrete Washout Area (CWA) Rock Socks (RS) Final Escrow Amount 5/6/2021 5:59 PM C:\Users\megst\OneDrive\Documents\Keefe Civil\2020-16_Blehm Subdivision\Erosion Control Report\Hill - Escrow.xls