Peachtree Partners LLC Residential Development Plan Environmental Assessment Worksheet Located in the City of Corcoran, MN September 22, 2014 EAW Figures (Following the EAW Worksheet) Figure 1. Project Location Figure 2. USGS Map Figure 3 (A). Existing Natural Resources Map Figure 3 (B). Wetland Classification Map Figure 4. Site Plan-Proposed PUD Sketch Plan Figure 5. Soils Map EAW Exhibits (Following the EAW Worksheet) Exhibit 1. DNR Natural Heritage License Agreement Exhibit 2. DNR Natural Heritage Letter (prepared by Stantec) Exhibit 3. SHPO letter Exhibit 4. Transportation Feasibility Study Exhibit 5. Stormwater Feasibility Study Exhibit 6. Utility Feasibility Study EAW Tables Table 1. Project Magnitude ................................................................................................ 5 Table 2. Land Cover Types................................................................................................ 5 Table 3. Required Permits and Approvals.......................................................................... 6 Page | 2 July 2013 version ENVIRONMENTAL ASSESSMENT WORKSHEET This Environmental Assessment Worksheet (EAW) form and EAW Guidelines are available at the Environmental Quality Board’s website at: http://www.eqb.state.mn.us/EnvRevGuidanceDocuments.htm. The EAW form provides information about a project that may have the potential for significant environmental effects. The EAW Guidelines provide additional detail and resources for completing the EAW form. Cumulative potential effects can either be addressed under each applicable EAW Item, or can be addresses collectively under EAW Item 19. Note to reviewers: Comments must be submitted to the RGU during the 30-day comment period following notice of the EAW in the EQB Monitor. Comments should address the accuracy and completeness of information, potential impacts that warrant further investigation and the need for an EIS. 1. Project title: Schendel Development 2. Proposer: Contact person: Paul Robinson Contact person: Kendra Lindahl Title: Title: Corcoran City Planner Address: 8200 CR 116 City, State, ZIP: Blaine, MN 55449 City, State, ZIP: Corcoran, MN 55340 Phone: 763-398-0320 Phone: 763-420-2288 Fax: 763-792-8974 Fax: 612-638-0227 Email: [email protected] Email: [email protected] Address: 4. 3. RGU Development Manager th 1521 94 Lane N.E. Reason for EAW Preparation: (check one) Required: Discretionary: EIS Scoping Citizen petition Mandatory EAW RGU discretion Proposer initiated If EAW or EIS is mandatory give EQB rule category subpart number(s) and name(s): N/A Page | 3 5. Project Location: County: Hennepin City/Township: Corcoran PLS Location: SE Qtr of Section 23, Township 119, Range 23 (¼, ¼, Section, Township, Range) Watershed: Mississippi River – Twin Cities Elm Creek Watershed (81 major watershed scale) GPS Coordinates: 45.099336, -93.550262 Tax Parcel Number: 23-119-23-42-0004 At a minimum attach each of the following to the EAW: • County map showing the general location of the project; • U.S. Geological Survey 7.5 minute, 1:24,000 scale map indicating project boundaries (photocopy acceptable); and • Site plan dated August 26, 2014 showing all significant project and natural features. Pre-construction site plan and post-construction site plan. See Figures 1-4. 6. a. Project Description: Provide the brief project summary to be published in the EQB Monitor, (approximately 50 words). The proposed development is a residential subdivision consisting of 226 single family units and 23 townhomes for a total of 249 units. b. Give a complete description of the proposed project and related new construction, including infrastructure needs. If the project is an expansion include a description of the existing facility. Emphasize: 1) construction, operation methods and features that will cause physical manipulation of the environment or will produce wastes, 2) modifications to existing equipment or industrial processes, 3) significant demolition, removal or remodeling of existing structures, and 4) timing and duration of construction activities. The construction of this project will include grading the existing topography to meet the needs of a residential subdivision which will result in roads, house pads, ponds and infiltration basins as well as the installation of potable water, sanitary sewer and storm sewer piping. The existing wetlands will be maintained and even improved in some areas and there will be some clearing of trees. There are no existing structures on the property. It is currently used for agriculture. The construction activities are anticipated to start in 2015 and be completed in 2019. Page | 4 c. Project magnitude: Table 1. Project Magnitude Total Project Acreage: 103 acres Number and type of residential units: 226 Single Family 23 Town Homes Commercial building area (in square feet): d. Industrial building area (in square feet): 0 0 Institutional building area (in square feet): 0 Other uses – specify (in square feet): 0 Structure height(s): 35’ Explain the project purpose; if the project will be carried out by a governmental unit, explain the need for the project and identify its beneficiaries. The project purpose is to create a residential subdivision in the City of Corcoran. e. Are future stages of this development including development on any other property planned or likely to happen? Yes No If yes, briefly describe future stages, relationship to present project, timeline and plans for environmental review. f. Is this project a subsequent stage of an earlier project? Yes No If yes, briefly describe the past development, timeline and any past environmental review. 7. Cover types: Estimate the acreage of the site with each of the following cover types before and after development: Table 2. Land Cover Types Cover Type Wetlands Deep water / Streams Wooded / Forest Brush / Grassland Cropland Before After 10.7 ac. 0.0 ac. 29.2 ac. 0.4 ac. 62.1 ac. 10.3 ac. 0.0 ac. 12.1 ac. 0.2 ac. 0.0 ac. Cover Type Lawn / Landscaping Impervious Surface Stormwater Pond Other (describe) TOTAL Before After 0.7 ac. 0.2 ac. 0.0 ac. N/A 48.9 ac. 27.0 ac. 4.8 ac. N/A 103.3 ac. 103.3 ac. Page | 5 8. Permits and approvals required: List all known local, state and federal permits, approvals, certifications and financial assistance for the project. Include modifications of any existing permits, governmental review of plans and all direct and indirect forms of public financial assistance including bond guarantees, Tax Increment Financing and infrastructure. All of these final decisions are prohibited until all appropriate environmental review has been completed. See Minnesota Rules, Chapter 4410.3100. Table 3. Required Permits and Approvals Agency City of Corcoran Metropolitan Council Environmental Quality Board (EQB) Federal Emergency Management Agency (FEMA) Minnesota Department of Health Type of Application Status Planned Unit Development, Sketch Plan Review Completed Preliminary and Final Planned Unit Development Plan Future Preliminary and Final Plat Future Utility and Street Construction Plans – Staff approval Future Grading Permit – Staff approval Future Erosion Control Plan – Staff approval Future Major Comprehensive Plan Amendment Review. Metropolitan Council approved on 8/27/2014; City Public Hearing 3/6/2014 (approved by City Council on 6/12/14, subject to Metropolitan Council approval) As part of the EAW process, a completed EAW is submitted to the EQB, which publishes the availability of the document for a 30 day review. Letter of Map Amendment (LOMA) – Until a site plan is completed and the floodplain elevations are analyzed, we cannot determine whether this will be required. If required, it will pertain to a small portion of the property in likely a later phase of development/construction. Pending Future Individual Well Abandonment – The current homeowner of the exception parcel may be obligated to complete this. Potential Future Water Main Extension Approval – This approval is needed prior to starting construction of water main. Future Page | 6 Agency Type of Application Sanitary Sewer Extension Approval – This approval is needed prior to starting construction of sanitary sewer. Minnesota Pollution Control Agency Elm Creek Watershed Management Commission US Army Corps of Engineers (ACOE) Hennepin County Metropolitan Council Environmental Services National Pollutant Discharge Elimination System (NPDES) Permit - This is needed prior to starting construction and is typically approved along with the construction plans or shortly thereafter. SWPPP Status Future Future Future Wetland Delineation Approval 1/3/2014 Wetland Conservation Act Permit Potential future Water quality, water quantity, erosion control, and floodplain review Future Wetland Delineation Review – This is being processed at this time. In progress Jurisdiction Determination In progress Section 404 Wetland Permit (General Permit or Letter of Permission) In progress Highway Access Permit, work in the rightof-way, and County Utility Permits are anticipated to be required. Future Sewer Extension Future Direct Connection Application Future Application for Connection to or Use of Metropolitan Council Environmental Services Facilities Future Future Cumulative potential effects may be considered and addressed in response to individual EAW Item Nos. 9-18, or the RGU can address all cumulative potential effects in response to EAW Item No. 19. If addressing cumulative effect under individual items, make sure to include information requested in EAW Item No. 19 9. Land use: a. Describe: i. Existing land use of the site as well as areas adjacent to and near the site, including parks, trails, prime or unique farmlands. The subject property contains a combination of tilled agricultural area, surrounding wooded areas and wetlands. Across County Road (CR) 10 is parkland with ball fields and supporting parking. The area around the CR 10 and CR 50 intersection contains some limited commercial use. Page | 7 There is a 4.6 acre exception that juts into the northwest corner of the property. This land is likely to be subdivided in the near future and will yield between 8 and 12 lots. ii. Plans. Describe planned land use as identified in comprehensive plan (if available) and any other applicable plan for land use, water, or resources management by a local, regional, state, or federal agency. The Comprehensive Plan has been amended to be consistent with the land uses proposed with this development. iii. Zoning, including special districts or overlays such as shoreland, floodplain, wild and scenic rivers, critical area, agricultural preserves, etc. The site includes property in the Wetland Overlay District, Shoreland Overlay District and Floodplain Overlay District. A small portion of floodplain juts into the north central portion of the property. There is also a stream on the south and west of CR 10. It meanders in a pattern that roughly parallels CR 10. The Existing Natural Resources exhibit attached to this document shows the area included in the Shoreland Overlay District. As shown there is an area that a small portion of property in the middle of the Subject Property along CR 10, even though the protected stream is on the other side of the roadway. The Shoreland Overlay District also includes a small area in the extreme northwestern corner of the property. There are a number of wetlands scattered throughout the site. b. Discuss the project’s compatibility with nearby land uses, zoning, and plans listed in Item 9a above, concentrating on implications for environmental effects. Issues associated with land use compatibility were considered in the Comprehensive Plan. The design of the project includes trails, private open space and buffer areas as well as a restored wetland. Special attention has been taken to analyze the effects on the surrounding street network and planned changes that will respond to these changes. A copy of the Transportation Feasibility study is attached as an Exhibit 4 to this document. c. Identify measures incorporated into the proposed project to mitigate any potential incompatibility as discussed in Item 9b above. The project is being designed and processed as a Planned Unit Development (PUD) to allow design flexibility to work better with the topography and natural resources. Considerable landscaping is anticipated along CR 10. Additional outlots are intended to provide open space buffers to adjacent properties. Landscaping along CR10 and outlots will contribute in creating an urban forest. The largest wetland on the property will be restored to improve the existing quality level of vegetation. All shorelands and wetlands will be subject to the standards in the Shoreland and Wetland Overlay Districts in the City of Corcoran Zoning Ordinance. Page | 8 10. Geology, soils and topography/land forms: a. Geology - Describe the geology underlying the project area and identify and map any susceptible geologic features such as sinkholes, shallow limestone formations, unconfined/shallow aquifers, or karst conditions. Discuss any limitations of these features for the project and any effects the project could have on these features. Identify any project designs or mitigation measures to address effects to geologic features. N/A b. Soils and topography - Describe the soils on the site, giving NRCS (SCS) classifications and descriptions, including limitations of soils. Describe topography, any special site conditions relating to erosion potential, soil stability or other soils limitations, such as steep slopes, highly permeable soils. Provide estimated volume and acreage of soil excavation and/or grading. Discuss impacts from project activities (distinguish between construction and operational activities) related to soils and topography. Identify measures during and after project construction to address soil limitations including stabilization, soil corrections or other measures. Erosion/sedimentation control related to stormwater runoff should be addressed in response to Item 11 (b) (ii). A copy of the County Soil Survey map is attached as Figure 5. The soils on the property are well suited to urban development, except for the wetland soils that are being protected and restored. Approximately 70 acres of the site is expected to be graded to prepare the site for development. That includes moving approximately 300,000 cubic yards of material on the site. Grading and erosion will be controlled on site and a SWPPP will be prepared. NOTE: For silica sand projects, the EAW must include a hydrogeologic investigation assessing the potential groundwater and surface water effects and geologic conditions that could create an increased risk of potentially significant effects on groundwater and surface water. Descriptions of water resources and potential effects from the project in EAW Item 11 must be consistent with the geology, soils and topography/land forms and potential effects described in EAW Item 10. 11. Water resources: a. Describe surface water and groundwater features on or near the site in a (i) and a (ii) below. Exhibit 5 - Stormwater Feasibility Study examines on-site water resources and makes recommendations for the development review process. i. Surface water - lakes, streams, wetlands, intermittent channels, and county/judicial ditches. Include any special designations such as public waters, trout stream/lake, wildlife lakes, migratory waterfowl feeding/resting lake, and outstanding resource value water. Include water quality impairments or special designations listed on the current MPCA 303d Impaired Waters List that are within 1 mile of the project. Include DNR Public Waters Inventory number(s), if any. Page | 9 This property includes wetland and a portion is in the Shoreland Overlay district because for a tributary stream in the South Rush Creek Corridor. The development is separated from the stream by County Road 10 to the south and the preserved Wetlands to the west. The development will not have any site drainage going directly in this stream. The development will comply with all local ordinance requirements for these overly districts. ii. Groundwater – aquifers, springs, seeps. Include: 1) depth to groundwater; 2) if project is within a MDH wellhead protection area; 3) identification of any onsite and/or nearby wells, including unique numbers and well logs if available. If there are no wells known on site or nearby, explain the methodology used to determine this. Groundwater was not present during the soil boring on this project which was drilled to a depth of 14 feet. There are no wells currently present on this property however there was a domestic well on the property that has been sealed and officially closed. Documentation is available upon request. b. Describe effects from project activities on water resources and measures to minimize or mitigate the effects in items b (i) through b (iv) below. i. Wastewater - For each of the following, describe the sources, quantities and composition of all sanitary, municipal/domestic and industrial wastewater produced or treated at the site. 1. If the wastewater discharge is to a publicly owned treatment facility, identify any pretreatment measures and the ability of the facility to handle the added water and waste loadings, including any effects on, or required expansion of, municipal wastewater infrastructure. 2. If the wastewater discharge is to a subsurface sewage treatment systems (SSTS), describe the system used, the design flow, and suitability of site conditions for such a system. 3. If the wastewater discharge is to surface water, identify the wastewater treatment methods and identify discharge points and proposed effluent limitations to mitigate impacts. Discuss any effects to surface or groundwater from wastewater discharges. The waste water discharge for this development will be handled through the local sanitary sewer system being discharged in the Metropolitan Council system. This will require the installation of a lift station as a result of the low topography. The anticipated volumes for the development will be approximately 68,000 gallons per day. ii. Stormwater - Describe the quantity and quality of stormwater runoff at the site prior to and post construction. Include the routes and receiving water bodies for runoff from the site (major downstream water bodies as well as the immediate receiving waters). Discuss any environmental effects from stormwater discharges. Describe stormwater pollution prevention plans including temporary and permanent runoff controls and potential BMP site locations to manage or treat stormwater runoff. Identify specific erosion control, sedimentation control or stabilization measures to address soil limitations during and after project construction. The storm water runoff on this site will meet the standards of the Elm Creek watershed. This includes but is not limited to not increasing the rate of discharge off site for a 2, 10 or 100 year storm event. It also includes no increase to total phosphorous loading from the predevelopment to post development. The proposed development would disturb more than one acre of land and as a result Peachtree Partners, LLC would be required to obtain a National Pollutant Discharge Elimination System (NPDES) Storm Water Page | 10 Construction Permit from the MPCA. The NDPES permit requires that a Storm Water Pollution Prevention Plan (SWPPP) be developed to describe Best Management Practices (BMPs) that would be implemented to prevent on-site construction-related erosion and protect downstream water bodies from sedimentation or water quality impacts. Construction BMPs would likely entail measures such as silt fence, bio-rolls and construction of temporary sedimentation basins. Additionally, under the terms of the NPDES construction permit. iii. Water appropriation - Describe if the project proposes to appropriate surface or groundwater (including dewatering). Describe the source, quantity, duration, use and purpose of the water use and if a DNR water appropriation permit is required. Describe any well abandonment. If connecting to an existing municipal water supply, identify the wells to be used as a water source and any effects on, or required expansion of, municipal water infrastructure. Discuss environmental effects from water appropriation, including an assessment of the water resources available for appropriation. Identify any measures to avoid, minimize, or mitigate environmental effects from the water appropriation. The project will be served by the City of Corcoran’s water system. As previously mentioned a former domestic well has been sealed on the property and the existing well on the exception parcel will need to be addressed in the future when it is developed. iv. Surface Waters a. Wetlands - Describe any anticipated physical effects or alterations to wetland features such as draining, filling, permanent inundation, dredging and vegetative removal. Discuss direct and indirect environmental effects from physical modification of wetlands, including the anticipated effects that any proposed wetland alterations may have to the host watershed. Identify measures to avoid (e.g., available alternatives that were considered), minimize, or mitigate environmental effects to wetlands. Discuss whether any required compensatory wetland mitigation for unavoidable wetland impacts will occur in the same minor or major watershed, and identify those probable locations. A minimum of a 25-foot average buffer and a 15-foot structure setback from the buffer will be provided around all wetlands, actual buffer width will range from 25 feet up to 50 feet. There will be two minor wetlands filled. A US Army Corps of Engineers permit may be required for this work. In addition the development will restore a large wetland on the site to improve the vegetation. The project will impact less than a half an acre of existing wetlands and will be restoring over 5 acres of existing wetland on site. b. Other surface waters- Describe any anticipated physical effects or alterations to surface water features (lakes, streams, ponds, intermittent channels, county/judicial ditches) such as draining, filling, permanent inundation, dredging, diking, stream diversion, impoundment, aquatic plant removal and riparian alteration. Discuss direct and indirect environmental effects from physical modification of water features. Identify measures to avoid, minimize, or mitigate environmental effects to surface water features, including in-water Best Management Practices that are proposed to avoid or minimize turbidity/sedimentation while physically altering the water features. Discuss how the project will change the number or type of watercraft on any water body, including current and projected watercraft usage. N/A Page | 11 12. Contamination/Hazardous Materials/Wastes: a. Pre-project site conditions - Describe existing contamination or potential environmental hazards on or in close proximity to the project site such as soil or ground water contamination, abandoned dumps, closed landfills, existing or abandoned storage tanks, and hazardous liquid or gas pipelines. Discuss any potential environmental effects from pre-project site conditions that would be caused or exacerbated by project construction and operation. Identify measures to avoid, minimize or mitigate adverse effects from existing contamination or potential environmental hazards. Include development of a Contingency Plan or Response Action Plan. The Environmental Site Assessment by Braun Intertec Dated November 18, 2013 identified no historical recognized environmental conditions with the exception of the following underground storage tank which, upon inspection and testing, did not reveal any environment impacts. One 1,000-gallon fuel underground storage tank (UST) was previously located at the site. Based on interview information and information provided by the client, the tank was pumped and removed from the site in October 2013. One sample was collected from 12 inches below the tank basin and analyzed for diesel range organics (DROs) by Pace Analytical. DRO was not detected in the sample analyzed and the tank was reportedly in good condition with no visible signs of leaks or contamination at the time of removal. Based on this information, the former fuel tank is considered a historical recognized environmental condition. A copy of this report is available upon request. b. Project related generation/storage of solid wastes - Describe solid wastes generated/stored during construction and/or operation of the project. Indicate method of disposal. Discuss potential environmental effects from solid waste handling, storage and disposal. Identify measures to avoid, minimize or mitigate adverse effects from the generation/storage of solid waste including source reduction and recycling. All waste materials produced during the project construction process will be disposed of properly. c. Project related use/storage of hazardous materials - Describe chemicals/hazardous materials used/stored during construction and/or operation of the project including method of storage. Indicate the number, location and size of any above or below ground tanks to store petroleum or other materials. Discuss potential environmental effects from accidental spill or release of hazardous materials. Identify measures to avoid, minimize or mitigate adverse effects from the use/storage of chemicals/hazardous materials including source reduction and recycling. Include development of a spill prevention plan. The proposed development would produce some construction debris during construction. Construction debris disposal would be the responsibility of the contractors performing the construction work. The proposed development will generate municipal solid waste (MSW) and household hazardous waste (HHW) for the residential units proposed. Recycling and trash pick-up services are currently provided to residents by the City, which in turn has a contract with Randy’s Environmental Services, a licensed waste hauler, for collection and disposal. It is anticipated that recycling and trash services would also be provided by the City for residents of the proposed development. Disposal of household hazardous waste would be the responsibility of the individual residents. Page | 12 d. Project related generation/storage of hazardous wastes - Describe hazardous wastes generated/stored during construction and/or operation of the project. Indicate method of disposal. Discuss potential environmental effects from hazardous waste handling, storage, and disposal. Identify measures to avoid, minimize or mitigate adverse effects from the generation/storage of hazardous waste including source reduction and recycling. N/A 13. Fish, wildlife, plant communities, and sensitive ecological resources (rare features): a. Describe fish and wildlife resources as well as habitats and vegetation on or near the site. There will be some habitat loss as a result of tree clearing and grading activities. Habitat will be improved as part of the wetland restoration. b. Describe rare features such as state-listed (endangered, threatened or special concern) species, native plant communities, Minnesota County Biological Survey Sites of Biodiversity Significance, and other sensitive ecological resources on or within close proximity to the site. Provide the license agreement number (LA-) and/or correspondence number (ERDB) from which the data were obtained and attach the Natural Heritage letter from the DNR. Indicate if any additional habitat or species survey work has been conducted within the site and describe the results. Based on a GIS review of available Element Occurrence data from the MN DNR Natural Heritage Database there are no documented occurrences of MN Biological Survey (MBS)Mapped high quality natural areas, Rare Element Occurrences (rare species), or Minnesota Department of Natural Resources mapped Sites of Biodiversity Significance within the project site in Corcoran (see Exhibit 2). That being said there is one record of a rare species within one mile of the project boundary which is the Trumpeter swan and two additional records that occur between one and two miles from the Schendel site which are the Blandings turtle and the Loggerhead shrike. See attached letter verifying these findings and providing more detailed information from Ecologist Paul Bockenstedt on behalf of Stantec (Exhibit 1 - DNR license LA-663). c. Discuss how the identified fish, wildlife, plant communities, rare features and ecosystems may be affected by the project. Include a discussion on introduction and spread of invasive species from the project construction and operation. Separately discuss effects to known threatened and endangered species. There will be some tree loss as part of the construction grading activities. A significant planting program will also be included to establish and maintain a healthy urban forest. There will also be a significant effort to remove and treat Buckthorn and restoration work to increase the quality of vegetation in approximately 50% of the wetlands on site. d. Identify measures that will be taken to avoid, minimize, or mitigate adverse effects to fish, wildlife, plant communities, and sensitive ecological resources. Page | 13 Increasing the level of vegetation in the existing wetlands and creating a buffer around the high level wetlands and the creation of a new stormwater management system will lower the total phosphorous loading. 14. Historic properties: Describe any historic structures, archeological sites, and/or traditional cultural properties on or in close proximity to the site. Include: 1) historic designations, 2) known artifact areas, and 3) architectural features. Attach letter received from the State Historic Preservation Office (SHPO). Discuss any anticipated effects to historic properties during project construction and operation. Identify measures that will be taken to avoid, minimize, or mitigate adverse effects to historic properties. There are no historical structures and no known cultural resources present in the project area. The attached document in Exhibit 3 from the State Historic Preservation Office (SHPO) identifies two structures that are not located in the project area and will not be impacted by this project. 15. Visual: Describe any scenic views or vistas on or near the project site. Describe any project related visual effects such as vapor plumes or glare from intense lights. Discuss the potential visual effects from the project. Identify any measures to avoid, minimize, or mitigate visual effects. N/A 16. Air: a. Stationary source emissions - Describe the type, sources, quantities and compositions of any emissions from stationary sources such as boilers or exhaust stacks. Include any hazardous air pollutants, criteria pollutants, and any greenhouse gases. Discuss effects to air quality including any sensitive receptors, human health or applicable regulatory criteria. Include a discussion of any methods used assess the project’s effect on air quality and the results of that assessment. Identify pollution control equipment and other measures that will be taken to avoid, minimize, or mitigate adverse effects from stationary source emissions. N/A b. Vehicle emissions - Describe the effect of the project’s traffic generation on air emissions. Discuss the project’s vehicle-related emissions effect on air quality. Identify measures (e.g. traffic operational improvements, diesel idling minimization plan) that will be taken to minimize or mitigate vehicle-related emissions. There are no intersections in close proximity to the subject property that will experience poor air quality. c. Dust and odors - Describe sources, characteristics, duration, quantities, and intensity of dust and odors generated during project construction and operation (Fugitive dust may be discussed under item 16a). Discuss the effect of dust and odors in the vicinity of the project Page | 14 including nearby sensitive receptors and quality of life. Identify measures that will be taken to minimize or mitigate the effects of dust and odors. The proposed development would produce noise and dust typical of construction projects. Noise and dust would be intermittent and temporary during development of the project area dependent on construction phasing. The end use of the proposed development of low density single family residential homes, which is consistent with the target use for the area as identified within the City’s Comprehensive plan and would not produce nuisance odors, noise, or dust. 17. Noise Describe sources, characteristics, duration, quantities, and intensity of noise generated during project construction and operation. Discuss the effect of noise in the vicinity of the project including 1) existing noise levels/sources in the area, 2) nearby sensitive receptors, 3) conformance to state noise standards, and 4) quality of life. Identify measures that will be taken to minimize or mitigate the effects of noise. Bulldozers, scrapers and other construction equipment will be used during the construction process. The equipment will meet all applicable industry standards for noise. Construction activities will be subject to the City of Corcoran ordinances for hours of construction activities. 18. Transportation a. Describe traffic-related aspects of project construction and operation. Include: 1) existing and proposed additional parking spaces, 2) estimated total average daily traffic generated, 3) estimated maximum peak hour traffic generated and time of occurrence, 4) indicate source of trip generation rates used in the estimates, and 5) availability of transit and/or other alternative transportation modes. See the attached Transportation Feasibility Report in Exhibit 4. b. Discuss the effect on traffic congestion on affected roads and describe any traffic improvements necessary. The analysis must discuss the project’s impact on the regional transportation system. If the peak hour traffic generated exceeds 250 vehicles or the total daily trips exceeds 2,500, a traffic impact study must be prepared as part of the EAW. Use the format and procedures described in the Minnesota Department of Transportation’s Access Management Manual, Chapter 5 (available at: http://www.dot.state.mn.us/accessmanagement/resources.html) or a similar local guidance, See the attached Transportation Feasibility Report in Exhibit 4. c. Identify measures that will be taken to minimize or mitigate project related transportation effects. See the attached Transportation Feasibility Report in Exhibit 4 for a description of the proposed improvements to the CR 10/CR 50 intersection. Page | 15 19. Cumulative potential effects: (Preparers can leave this item blank if cumulative potential effects are addressed under the applicable EAW Items) a. Describe the geographic scales and timeframes of the project related environmental effects that could combine with other environmental effects resulting in cumulative potential effects. See the attached Feasibility Reports in Exhibits 4, 5 and 6. b. Describe any reasonably foreseeable future projects (for which a basis of expectation has been laid) that may interact with environmental effects of the proposed project within the geographic scales and timeframes identified above. As described in response to question 9 (i) there is an existing exception parcel located in the northwestern portion of the site that will likely develop in the near future. c. Discuss the nature of the cumulative potential effects and summarize any other available information relevant to determining whether there is potential for significant environmental effects due to these cumulative effects. The impact to the local environment would be minimal. The area can be readily connected to the surrounding street network and stormwater drainage system and the parcel doesn’t include any existing wetland or wooded areas. 20. Other potential environmental effects: If the project may cause any additional environmental effects not addressed by items 1 to 19, describe the effects here, discuss the how the environment will be affected, and identify measures that will be taken to minimize and mitigate these effects. N/A Page | 16 RGU CERTIFICATION. (The Environmental Quality Board will only accept SIGNED Environmental Assessment Worksheets for public notice in the EQB Monitor.) I hereby certify that: • The information contained in this document is accurate and complete to the best of my knowledge. • The EAW describes the complete project; there are no other projects, stages or components other than those described in this document, which are related to the project as connected actions or phased actions, as defined at Minnesota Rules, parts 4410.0200, subparts 9c and 60, respectively. • Copies of this EAW are being sent to the entire EQB distribution list. Signature: Title: Date: 9/22/2014 Corcoran City Planner_________________________ Page | 17 EAW Figures Peachtree Partners LLC Residential Development Plan FigureMap 1. 4 Project Location Site Medina St. Louis Park Minnetrista Hopkins Edina Project Site Hennepin County Boundary Municipal Boundaries Sources: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2013 Schendel - County Location Map - 08.26.2014 - 0 3 6 Miles V:\1938\active\193802577\GIS\Projects\County Location.mxd N Map2.4 Figure USGS Location Map 97th Ave N G H ¢ E BECHTOLD ROAD G H s E G H i E K L ï I TRAIL HAVEN ROAD MEISTER ROAD GOOSE LAKE K L ö I CS AH Co Rd 116 ROAD 10 Fletcher Lane STREHLER ROAD CAIN ROAD SCHUTTE Co Rd 50 Rebecca Park Trail G H ¼ E COOK LAKE LARKIN G H s E RD PIO N EE R WILLOW DRIVE JUBERT LAKE ROLLLING HILLS RD SCOTT LAKE OL D HORSESHOE TRAIL TR MORIN LAKE SE TT LE RS RD HACKAMORE Project Site Boundary ROAD @ A Ø ? Copyright:© 2013 National Geographic Society, i-cubed Schendel - USGS Location Map - 08.26.2014 - 0 3,000 6,000 Feet V:\1938\active\193802577\GIS\Projects\USGS.mxd N Figure 3 (A). Existing Natural Resources Map DNR Regulated Tributary to Rush Creek Medium Quality Wetland Low Quality Woods Low Quality Wetland Low or Medium Quality Wetland Flood Plain Medium Quality Maple Basswood Low or Medium Quality Wetland High Quality Wetland Flood Plain Low Quality Woods Low Quality Wetlands Shoreland Overlay District Existing Farm Field Low Quality Wetland to be Restored Low Quality Woods Medium Quality Wetland to be Restored Low Quality Woods Low Quality Wetland 0 200 Schendel - Existing Natural Resources - 08.26.2014 - Project #_193802580 500 N ³ Figure 3 (B) . Wetland Classification Map B A H E H C Channel D Site 3 F-T1 Fletcher Lane (County Road 116) Site 4 Channel F-T2 t un Co y Ro ad 10 G City Classification High Medium Property Boundary Rebecca Park Trail (County Road 50) Stantec Consulting 2335 Highway 36 W Saint Paul, MN 55113 tel 651.636.4600 fax 651.636.1311 Geographic Information Systems Image Source: U.S. Geological Survey (2012) Parcels 0 150 300 600 Feet SCHENDEL SITE, CORCORAN, MN March 2014 The information on this map has been compiled by Stantec staff from a variety of sources and is subject to change without notice. Stantec makes no representations or warranties, express or implied, as to accuracy, completeness,timeliness, or rights to the use of such information. \\Us1291-f01\workgroup\1938\active\193802592\GIS\Projects\fig1_wetlnd_class.mxd Figure 4. Site Plan-Proposed PUD Sketch Plan Current Zoning - RMF-3 High Density Residential Proposed Zoning - PUD Planned Unit Development Proposed Minimum Lot Widths = 55’,65’,75’ Proposed Minimum Lot Depth – 120’ Proposed Lot Setbacks • Front = 25’ • Side = 5’ • Rear = 30’ Proposed Townhome Setbacks • Front = 20’ • Side = 20’ • Rear = 30’ • Between Townhome Structure = 20’ Proposed Right-of-way = 50’ Trail Restored Wetland Gross Density Property Area = 103.3 acres 55’ Wide Lots = 81 65’ Wide Lots = 88 75’ Wide Lots = 57 Proposed Number of Lots = 226 Proposed Number of Townhomes = 23 249 Total Residential Units Gross Density = 2.4 units/acre Overlook Fletcher Lane (CR 116) Zoning & Lot Information LEGEND 55’ Wide Residential Lot 65’ Wide Residential Lot 75’ Wide Residential Lot Townhome (Southeast Parcel) Flood Plain Wetland Open Space Sidewalk Trail Rebecca Park Trail (CR 50) Future Trail 0 200 Schendel - PUD Sketch Plan - 08.29.2014 - Project #_193802580 500 N Figure Map 4 5. County Soil Survey Map L27A L37B L27A L25A L22C2 L27A L22C2 L22C2 L24A L22D2 L24A L22C2 L37B L22D2 L24A L22D2 L25A L23A L37B L37B L22C2 L37B Project Site L23A L22C2 - Lester loam, morainic, 6 to 12 percent slopes, eroded L22E - Lester loam, morainic, 18 to 25 percent slopes L22D2 - Lester loam, morainic, 12 to 18 percent slopes, eroded L24A - 08.26.2014 - L22E L22C2 L22C2 L25A - Le Sueur loam, 1 to 3 percent slopes Schendel - Soils L22D2 L25A L24A - Glencoe loam, depressional, 0 to 1 percent slopes L37B - Angus loam, morainic, 2 to 5 percent slopes L25A L37B L23A - Cordova loam, 0 to 2 percent slopes L27A - Suckercreek loam, 0 to 2 percent slopes, frequently flooded L24A L37B L37B L22C2 L22C2 L24A L22C2 L25A L24A L22C2 Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community 0 300 V:\1938\active\193802577\GIS\Projects\Soils.mxd 600 Feet N EAW Exhibits Peachtree Partners LLC Residential Development Plan Exhibit 1. DNR Natural Heritage License Agreement Exhibit 1. DNR Natural Heritage License Agreement Exhibit 1. DNR Natural Heritage License Agreement Exhibit 1. DNR Natural Heritage License Agreement Exhibit 1. DNR Natural Heritage License Agreement Exhibit 2. DNR Natural Heritage Letter (prepared by Stantec) Stantec Consulting Services Inc. 2335 Highway 36 West, St. Paul MN 55113-3819 September 9, 2014 File: 193802577 Attention: Paul Robinson, Development Manager Peachtree partners 1521 94th Lane NE Blaine MN 55449 Reference: Summary of rare features near Schendel site, Corcoran, MN Dear Paul, Based on a GIS review of available Element Occurrence data from the MN DNR Natural Heritage Database, we observed the following: There are no documented occurrences of MN Biological Survey (MBS)-Mapped high quality natural areas, Rare Element Occurrences (rare species), or Minnesota Department of Natural Resources mapped Sites of Biodiversity Significance within the project site in Corcoran (see attached map). There is one record of a rare species within one mile of the project boundary: • Trumpeter swan (Cygnus buccinatory) MN THR o Observed approximately one mile to the southeast of the site in 2000. Two additional records occur between one and two miles from the Schendel site, including: • Blandings turtle (Emydoidea blandingii) MN THR o • One individual observed approximately 1.1 miles east of the project site, crossing County Road 10. Loggerhead shrike (Lanius ludoviciana) MN THR o A nesting pair with young was observed in 1994 with an additional observation in 1995. Exhibit 2. DNR Natural Heritage Letter (prepared by Stantec) September 9, 2014 Paul Robinson, Development Manager Page 2 of 2 Reference: Summary of rare features near Schendel site, Corcoran, MN This information is based on the most recent GIS-based EO data that Stantec has on file. If you have questions or need additional information, please let me know. Thank you, STANTEC CONSULTING SERVICES INC. Paul Bockenstedt Ecologist/Project Manager Phone: (651) 604-4812 Fax: (651) 636-1311 [email protected] Attachment: EO Map c. file pjb document2 Exhibit 2. DNR Natural Heritage Letter (prepared by Stantec) _ ^ ³ Emydoidea blandingii Lanius ludovicianus _ ^ Haliaeetus leucocephalus _ ^ _ ^ Native Plant Community, Undetermined Class _ ^ Approximate Schendel Site Boundary _ ^ _ ^ Emydoidea blandingii Cygnus buccinator Southern Mesic Maple-Basswood Forest Class _ ^ Sedge Meadow Type _ ^ Red Oak - Sugar Maple - Basswood - (Bitternut Hickory) Forest Type _ ^ Schendel Site - Rare Features ² 0 0.125 0.25 Legend _ ^ Rare elements MBS Sites Sites of Biodiversity Significance Geographic Information Systems 0.5 Miles Exhibit 2. DNR Natural Heritage Letter (prepared by Stantec) Sites of Biodiversity Significance Outstanding High Moderate Below Exhibit 3. State Historic Preservation Office (SHPO) Letter From: Thomas Cinadr [mailto:[email protected]] Sent: Tuesday, September 09, 2014 6:37 AM To: Paul Robinson Subject: Re: File Search Letter THIS EMAIL IS NOT A PROJECT CLEARANCE. This message simply reports the results of the cultural resources database search you requested. The database search produced results for only previously known archaeological sites and historic properties. Please read the note below carefully. No archaeological sites were identified in a search of the Minnesota Archaeological Inventory and Historic Structures Inventory for the search area requested. A report containing the historic properties identified is attached. The result of this database search provides a listing of recorded archaeological sites and historic architectural properties that are included in the current SHPO databases. Because the majority of archaeological sites in the state and many historic architectural properties have not been recorded, important sites or structures may exist within the search area and may be affected by development projects within that area. Additional research, including field survey, may be necessary to adequately assess the area’s potential to contain historic properties. If you require a comprehensive assessment of a project’s potential to impact archaeological sites or historic architectural properties, you may need to hire a qualified archaeologist and/or historian. If you need assistance with a project review, please contact Kelly Gragg-Johnson in Review and Compliance @ 651-259-3455 or by email at [email protected]. The Minnesota SHPO Survey Manuals and Database Metadata and Contractor Lists can be found at http://www.mnhs.org/shpo/survey/inventories.htm SHPO research hours are 8:30 AM – 4:00 PM Tuesday-Friday. The Office is closed on Mondays. Tom Cinadr Survey and Information Management Coordinator Minnesota State Historic Preservation Office Minnesota Historical Society 345 Kellogg Blvd. West St. Paul, MN 55102 651-259-3453 Exhibit 3. SHPO letter History/Architecture Inventory PROPERTY NAME COUNTY: ADDRESS Twp Range Sec Quarters USGS Report NRHP CEF DOE Inventory Number Hennepin CITY/TOWNSHIP: Corcoran store NW corner Co. Rd. 10 & Co. Rd. 50 119 23 23 SW-SE-SE Hamel HE-88-1H HE-COC-025 St. Thomas Catholic Church 20000 Co. Rd. 10 119 23 23 SE-SE-SE Hamel HE-88-1H HE-COC-026 Tuesday, September 09, 2014 Exhibit 3. SHPO letter Page 1 of 1 Exhibit 4. Transportation Feasibility Study Wenck File #2294-24 July 2014 Transportation Feasibility Study Peachtree Development Prepared for: THE CITY OF CORCORAN, MN 8200 County Road 116 Corcoran, MN 55340 Prepared by: WENCK ASSOCIATES, INC. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, Minnesota 55359-0249 (763) 479-4200 Table of Contents 1.0 INTRODUCTION ........................................................................................................1-1 1.1 1.2 2.0 TRAFFIC ANALYSIS ....................................................................................................2-1 2.1 2.2 2.3 2.4 2.5 2.6 3.0 Configuration ...................................................................................................... 2-1 Traffic Volume Data ............................................................................................ 2-1 Traffic Forecasts .................................................................................................. 2-1 Traffic Projections for 2030 ................................................................................ 2-2 Traffic Signal Warrants........................................................................................ 2-2 Conclusions ......................................................................................................... 2-2 ROAD NETWORK CONFIGURATIONS..........................................................................3-1 3.1 3.2 4.0 Background ......................................................................................................... 1-1 County Road 10 Turnback ................................................................................... 1-1 County Road 10 Alignment ................................................................................. 3-1 3.1.1 Meister Road—Option A ..................................................................... 3-1 3.1.2 “T” at CR 50—Option C ....................................................................... 3-1 CR 10 CR 50 Interesection................................................................................... 3-2 3.2.1 Option B1-A ......................................................................................... 3-2 3.2.2 Option B1-B ......................................................................................... 3-2 3.2.3 Option B2 ............................................................................................ 3-3 3.2.4 Option B3 ............................................................................................ 3-3 3.2.5 Option B4 ............................................................................................ 3-3 FINANCING ...............................................................................................................4-1 4.1 Approach............................................................................................................. 4-1 TABLES 1-7 of Estimated Costs FIGURES APPENDICES Appendix A: Appendix B: Appendix C: Peachtree Concept Entrance to 50, Classification Figure, Traffic Counts County 10 Turn Back Memo Peak Hour Turn Movement Volumes T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx i July 2014 1.0 Introduction Peachtree Properties have requested a feasibility study for potential access and estimated costs for transportation improvements to serve the proposed development generally located in the northwest of the intersection of County Road 10 and County Road 50. The entrance to the development is proposed to be on to County Road 10. This report looks specifically at the feasibility of providing transportation needs for ultimate buildout. Contained in the report are options for road configurations, access to the site and a traffic analysis to determine impacts and potential need for traffic signal at the “10-50” intersection. 1.1 BACKGROUND The “10/50” and “10-116” intersections have had numerous studies and potential alignments. The City’s 2030 Comprehensive Plan shows a realignment of CR 10 to Meister Road along with Larkin Road being reconstructed as an A Minor Connector. The 2030 Roadway Functional Classification is given in Appendix A (published June 2011 and updated April 2014). 1.2 COUNTY ROAD 10 TURNBACK The Council has recently discussed accepting jurisdiction of County Road 10 under a “turn back” agreement with Hennepin County. County Road 10 is listed in the County’s own plan as being eventually under City jurisdiction. A memo reviewing turn back costs for reconstruction and maintenance is given in Appendix B. Council is not pursuing a turn back at this time, however this report reviews two alignments and costs for reconstruction of CR 10 along Meister or west of a development known as Corcoran Trail. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 1-1 July 2014 2.0 Traffic Analysis 2.1 CONFIGURATION The CR 50/CR 10 intersection is currently configured as a “Y” type intersection, with CR 10 serving as the mainline and eastbound CR 50 controlled with a stop sign. CR 10 curves to the northwest at this location, creating an awkward intersection with CR 50. Improvements to the intersection layout are being developed in conjunction with the proposed project, however in the long term improvements to the intersection are needed whether or not the proposed development occurs. 2.2 TRAFFIC VOLUME DATA Intersection turn movement data was collected at the CR 50/CR 10 intersection on Thursday, July 10, 2014. The resultant turn movement data is shown in Appendix C. Observations during the data collection periods indicated some operational difficulties due to the intersection geometrics combined with the high volumes. Westbound left turns from CR 10 onto CR 50 must turn from the through lane, resulting in conflicts with traffic continuing on CR 10. Eastbound traffic on CR 50 must wait for gaps in the CR 10 traffic, resulting in delays. The awkward angle of the CR 10 leg to the northwest creates difficult sight lines for eastbound traffic on CR 50. The traffic volumes at this intersection are highly directional during the a.m. and p.m. peak hours. During the a.m. peak hour, which occurred from 7:00 – 8:00 am, 49% of vehicles entered from the northwest on CR 10, 36% from the west on CR 50, and 15% from the east on CR 10. During the p.m. peak hour, which occurred from 4:30 – 5:30 pm, 7% of vehicles entered from the northwest on CR 10, 16% from the west on CR 50, and 77% from the east on CR 10. In addition to peak hour data, daily volume data is available from Hennepin County. The most recent data for this area was collected in 2013. The annual average daily traffic (AADT) volume on CR 10 north of CR 50 was 2,600 vehicles per day. The AADT on CR 50 west of CR 10 was 2,900 vehicles per day. The percentage of the daily volume occurring during the a.m. and p.m. peak hours was also determined. On CR 10 north of CR 50, the a.m. peak hour volume was 13.3% of the daily volume and the p.m. peak hour was 16% of the daily volume. On CR 50 west of CR 10, the a.m. peak hour volume was 10.8% of the daily volume and the p.m. peak hour was 13.3% of the daily volume. These percentages are higher than the typical 10% value found at many locations. The higher than usual percentages are likely due to the large amount of commuter traffic that is present at this intersection. 2.3 TRAFFIC FORECASTS Traffic volume forecasts were developed for the CR 50/CR 10 intersection assuming development of the Schendel property. The expected development trips were calculated based on data presented in Trip Generation, Ninth Edition, published by the Institute of Transportation Engineers. These calculations represent gross total trips that will be generated by the proposed development. The resultant trip generation estimates are shown in the following table. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 2-1 July 2014 Weekday Trip Generation for Proposed Land Uses Land Use Size Single Family Dwelling Units Townhouse Dwelling Units Totals 226 DU 23 DU Weekday AM Peak Hour In Out Total 40 130 170 2 42 8 138 10 180 Weekday PM Peak Hour In Out Total 142 84 226 8 150 4 88 12 238 Weekday Daily Total 2152 134 2286 Development trips were assigned to the surrounding roadway network using trip distribution percentages based on existing travel patterns in the area. Traffic volumes were established for a five year build-out assumption during the weekday a.m. and p.m. peak hours. The resultant traffic volumes are presented in Figure 1. 2.4 TRAFFIC PROJECTIONS FOR 2030 The Hennepin County 2030 traffic volume forecasts show a daily volume of 4,800 on CR 10 in 2030 and a baseline volume of 3,050 in 2005. An interpolation of these numbers results in a daily volume of 4,100 on CR 10 in 2020. The Peachtree residential development is expected to generate 2,286 daily trips. Added to the base 2020 daily volume of 4,100 on CR 10 results in a total daily volume of 6,386. Of the 6,386 daily volume on CR 10, 36% is attributed to Peachtree and 64% is other background traffic. 2.5 TRAFFIC SIGNAL WARRANTS A preliminary review of traffic signal warrants was completed to determine if traffic signal control should be considered for the future CR 50/CR 10 intersection. Using the peak period data collected at the intersection, the peak hour and four hour warrants as described in the Minnesota Manual on Uniform Traffic Control Devices (MMUTCD) were reviewed. Under existing 2014 conditions, neither of the warrants are met. Under 2019 Build-out conditions, the peak hour warrant is met for one hour and the four hour warrant is met for three hours. This analysis did not include other future development in the area, which is expected to occur in the downtown area. Based on this preliminary analysis, traffic signal control would not be needed immediately but would likely be warranted within five years. Even if signal warrants are met in the future, Hennepin County will make the final decision on any traffic control changes at this intersection. Hennepin County ranks intersections based on traffic volumes, crash history, and funding to determine when traffic signal control is needed. Further discussions with Hennepin County will be needed to determine if traffic signal control can be installed at this intersection. 2.6 • • CONCLUSIONS The traffic volumes at the CR 50/CR 10 intersection are highly directional during the a.m. and p.m. peak hours. Observations during the data collection periods indicated some operational difficulties due to the difficult intersection geometrics combined with the high volumes. Improvements to the intersection layout are needed independent of the proposed development. Traffic volumes added by the proposed development make the need for T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 2-2 July 2014 improvements more evident and necessary. • Existing volumes do not meet traffic signal warrants. Future volumes with the full development in place will likely meet warrants by 2019. • Even if signal warrants are met in the future, Hennepin County will make the final decision on any traffic control changes at this intersection. Further discussions with Hennepin County will be needed to determine if traffic signal control can be installed at this intersection. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 2-3 July 2014 3.0 Road Network Configurations The engineering drawings given as Sheets C-101 through C-105 show several options for different configurations of the road network. Costs are given in Tables 1 through 6. 3.1 COUNTY ROAD 10 ALIGNMENT As noted previously, the City is not pursuing a turnback at this time. The configurations shown on Sheet C-101 “move” the County road to either Meister Road (Option A) or an extension of Cain Road (Option C). 3.1.1 Meister Road—Option A The project involves reconstruction of the existing Meister Road with a “T” intersection at CR 116 and four-way intersection with Cain Road. County staff initial feedback was creating a “T” intersection at CR 116 was not problematic, therefore the alignment appears feasible. The alignment does create an additional turn movement for northwest/southeast traffic whereas northwest traffic from the CR 116 / CR 10 intersection would need to travel north along CR 116, then turn left (west) onto Meister. The addition of traffic onto CR 116 for a short distance would need to be managed via extended turn lanes and possible signal at CR 116. Costs are given in Table 1 and show the following: • Construction $4.4M (includes significant ROW and poor soils correction at approx. $750K) • Contingency 20% and Engineering 15% • Total Project at $5.9M 3.1.2 “T” at CR 50—Option C Option C shows a new alignment to direct traffic onto CR 50 which would be a “T” intersection. Ultimate buildout shows the potential to connect with a Larkin Road extension as shown in the 2030 Comprehensive Plan. The project lowers some costs as compared to Option A such as the new road length is lower than Meister and eliminates intersection complexity with Cain /Meister and has dedicated half-ROW in Corcoran Trail development. The project has higher costs of estimated soil correction and wetland mitigation since the route crosses significant wetlands. Costs are given in Table 2 and show the following: • Construction $4.0M (includes significant poor soils correction and wetland work at $1.5M) • Contingency 20% and Engineering 15% • Total Project at $5.45M (wetland soil conditions will affect final cost) • Additional intersection work at Meister/CR 10 connection would increase cost T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 3-1 July 2014 3.2 CR 10 CR 50 INTERESECTION The 10-50 intersection options are labeled “B Options” and focus on potential intersection configurations. The Peachtree entrances are shown at different locations, and it should be noted the main entrance to the development will likely be moved and is shown for illustrative purposes only. The final design criteria and ROW requirements will affect land impacts and alignments. 3.2.1 Option B1-A Design criteria as shown on Sheet C-102A are: • 50 MPH Speed • 120’ ROW This option eliminates the Y configuration and creates a T intersection however requires Peachtree land dedication to the 50 MPH road curvature and removes existing businesses at the intersection. Should the option be considered for further evaluation, moving the T slightly east may avoid one of the businesses. Costs are given in Table 3 and show the following: • Construction $1.6M • Contingency 20% and Engineering 15% • No land acquisition costs or demolition are included • Signal is included at $250K • Total Project at $2.2M 3.2.2 Option B1-B Design criteria are the same as B1-A and are shown on Sheet C-102B as: • 50 MPH Speed • 120’ ROW This option eliminates the Y configuration and creates a T intersection however preserves developable (Peachtree) property but then requires City Park land dedication. Businesses may be able to remain if flexibility of lesser ROW requirement is received from the County Costs are given in Table 4 and show the following: • Construction $1.5M • Contingency 20% and Engineering 15% • No land acquisition costs, demolition, or park replacement costs are included • Signal is included at $250K • Total Project at $2.0M T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 3-2 July 2014 3.2.3 Option B2 Design criteria was modified for a lower speed however the ROW remains the same (Sheet C-103). Criteria are: • 30 MPH Speed • 120’ ROW This option also creates a T intersection, however preserves businesses and lessens Peachtree land impacts. Properties to the north of existing CR50 would need to be acquired, but the existing residential home remains. Access to the businesses would need to be clarified. Costs are given in Table 5 and show the following: • Construction $1.6M • Contingency 20% and Engineering 15% • No land acquisition costs or demolition costs are included • Signal is included at $250K • Total Project at $2.2M 3.2.4 Option B3 This option shows the Peachtree concept entrance through the City Park. The Peachtree concept has been further defined to show required turn lanes at the CR 50 intersection, and appears to need additional ROW. This concept is not feasible under County jurisdiction, and therefore not applicable. Costs are given in Table 6 and show the following: • Construction $1.1 M • Contingency 20% and Engineering 15% • No land acquisition costs, park replacement, or demolition costs are included • Signal is included at $250K • Total Project at $1.5M 3.2.5 Option B4 This option shows a roundabout concept with the Peachtree development being the 4th leg. The roundabout would also function as three legged without the development entrance. The project requires acquisition of two businesses, the properties to the north of CR 10 and a small easement of the existing residence. Costs are given in Table 7 and show the following: • Construction $1.0M • Contingency raised to 30% and Engineering 15% • No land acquisition costs or demolition costs are included • Access for south side of CR 50 and CR 10 needs to be provided • Total Project at $1.5M T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 3-3 July 2014 4.0 Financing 4.1 APPROACH Financing will depend on the direction given for the road network in this area. Staff has had discussions with the County about available funds or programs, longer term CIP project lists, etc. Overall it appears that a three party financial approach is optimal, where the County, City and developer contribute to the ultimate road network. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\transportation\Transporatation Feasibility Study.docx 4-1 July 2014 Tables Table 1. Option A Estimated Costs Peachtree Development Feasibility Study for Transportation MEISTER RD AND CAIN RD MAINLINE IMPROVEMENTS Item Units Qty Unit Price 1 $ 50,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACQUISITION ACRE $ 45,000.00 TRAFFIC CONTROL LUMP 1 $ 5,000.00 CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 REMOVE BITUMINOUS PAVEMENT SY 18,864 $ 3.00 FABRIC SY 31,924 $ 3.10 TOPSOIL CU YD 7,256 $ 20.00 23,092 $ COMMON EXCAVATION CU YD 15.00 15,500 $ POOR SOIL CORRECTION CU YD 25.00 14,047 $ AGGREGATE BASE CLASS 5 TON 12.00 2,235 $ AGGREGATE SHOULDERING TON 40.00 21,070 $ SELECT GRANULAR TON 15.00 1,451 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 13,417 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 7 $ DRIVEWAY CULVERTS EACH 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 SILT FENCE LF 14,366 $ 2.00 SEEDING SY 43,533 $ 0.50 PAVEMENT MESSAGE EACH $ 125.00 19,590 $ STRIPING LF 0.60 WETLAND IMPACTS ACRE 3.2 $ 55,000.00 ROW ACQUISITION ACRE 7.4 $ 50,000.00 OPTION A MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 50,000.00 5,000.00 56,593.33 98,965.78 145,111.11 346,380.22 387,500.00 168,561.07 89,388.44 316,052.00 5,804.44 1,207,527.60 5,600.00 28,732.00 21,766.67 11,754.00 176,000.00 370,000.00 3,490,736.67 698,147.33 523,610.50 4,712,494.50 4,700,000.00 CR-116, MEISTER RD, & CAIN RD INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 40,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE 1 $ 5,000.00 TRAFFIC CONTROL LUMP CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 5200 $ REMOVE BITUMINOUS PAVEMENT SY 3.00 10400 $ FABRIC SY 3.10 2000 $ TOPSOIL CU YD 20.00 7523 $ COMMON EXCAVATION CU YD 15.00 4576 $ AGGREGATE BASE CLASS 5 TON 12.00 616 $ AGGREGATE SHOULDERING TON 40.00 6864 $ SELECT GRANULAR TON 15.00 480 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 4438 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 DRIVEWAY CULVERTS EACH $ 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 3960 $ SILT FENCE LF 2.00 12000 $ SEEDING SY 0.50 12000 $ EROSION CONTROL BLANKET SY 1.50 9000 $ STRIPING LF 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ SIGNAL EACH $ OPTION A INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 40,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 15,600.00 32,240.00 40,000.00 112,840.00 54,912.00 24,640.00 102,960.00 1,920.00 399,427.20 7,920.00 6,000.00 18,000.00 5,400.00 866,859.20 173,371.84 130,028.88 1,170,259.92 1,200,000.00 SUMMARY OPTION A MAINLINE SUBTOTAL OPTION A INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 4,700,000.00 1,200,000.00 5,900,000.00 Exhibit 4. Transportation Feasibility Study Table 2. Option C Estimated Costs Peachtree Development Feasibility Study for Transportation Item MOBILIZATION & DEMOBILIZATION EASEMENT ACQUISITION TRAFFIC CONTROL CLEARING AND GRUBBING REMOVE BITUMINOUS PAVEMENT FABRIC TOPSOIL COMMON EXCAVATION POOR SOIL CORRECTION AGGREGATE BASE CLASS 5 AGGREGATE SHOULDERING SELECT GRANULAR BITUMINOUS MATERIAL FOR TACK COAT BITUMINOUS PAVEMENT SIGN PANELS TYPE C INSTALL SIGN TYPE C AND POST STORM SEWER PIPE DRIVEWAY CULVERTS RANDOM RIP RAP CLASS III SILT FENCE SEEDING EROSION CONTROL BLANKET PAVEMENT MESSAGE STRIPING WETLAND IMPACTS ROW ACQUISITION CAIN RD MAINLINE IMPROVEMENTS Units Qty Unit Price LUMP 1 $ 50,000.00 ACRE $ 45,000.00 1 $ 5,000.00 LUMP 1.5 $ 10,000.00 ACRE SY 16,178 $ 5.00 SY 20,044 $ 3.10 CU YD 1 $ 20.00 13,363 $ CU YD 15.00 45,700 $ CU YD 25.00 8,820 $ TON 12.00 1,403 $ TON 40.00 13,229 $ TON 15.00 911 $ GAL 4.00 8,424 $ TON 90.00 SF $ 33.00 EACH $ 250.00 LF $ 75.00 EACH $ 800.00 CU YD $ 120.00 8,870 $ LF 2.00 27,333 $ SY 0.50 27,333 $ SY 1.50 EACH $ 125.00 12,300 $ LF 0.60 9.40 $ 55,000.00 ACRE ACRE 9.00 $ 50,000.00 OPTION C MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 50,000.00 5,000.00 15,000.00 80,888.89 62,137.78 22.22 200,444.44 1,142,500.00 105,834.67 56,124.44 198,440.00 3,644.44 758,172.00 17,740.00 13,666.67 41,000.00 7,380.00 517,000.00 450,000.00 3,724,995.56 744,999.11 558,749.33 5,028,744.00 5,000,000.00 CTY RD 50 & CAIN RD INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 15,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE 1 $ 5,000.00 TRAFFIC CONTROL LUMP CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 REMOVE BITUMINOUS PAVEMENT SY 4,160 $ 3.00 FABRIC SY 8,320 $ 3.10 TOPSOIL CU YD 400 $ 20.00 COMMON EXCAVATION CU YD 1,505 $ 15.00 AGGREGATE BASE CLASS 5 TON 3,661 $ 12.00 AGGREGATE SHOULDERING TON 493 $ 40.00 SELECT GRANULAR TON 5,491 $ 15.00 BITUMINOUS MATERIAL FOR TACK COAT GAL 96 $ 4.00 BITUMINOUS PAVEMENT TON 888 $ 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 DRIVEWAY CULVERTS EACH $ 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 SILT FENCE LF 3,168 $ 2.00 2,400 $ SEEDING SY 0.50 2,400 $ EROSION CONTROL BLANKET SY 1.50 PAVEMENT MESSAGE EACH $ 125.00 1,800 $ STRIPING LF 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ SIGNAL EACH $ OPTION C INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 15,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 12,480.00 25,792.00 8,000.00 22,568.00 43,929.60 19,712.00 82,368.00 384.00 79,885.44 6,336.00 1,200.00 3,600.00 1,080.00 327,335.04 65,467.01 49,100.26 441,902.30 450,000.00 SUMMARY OPTION C MAINLINE SUBTOTAL OPTION C INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 5,000,000.00 450,000.00 5,450,000.00 Exhibit 4. Transportation Feasibility Study Table 3. Option B1-A Estimated Costs Peachtree Development Feasibility Study for Transportation Item MOBILIZATION & DEMOBILIZATION EASEMENT ACQUISITION TRAFFIC CONTROL CLEARING GRUBBING REMOVE BITUMINOUS PAVEMENT FABRIC TOPSOIL COMMON EXCAVATION POOR SOIL CORRECTION AGGREGATE BASE CLASS 5 AGGREGATE BASE SURGACING CLASS 2 SELECT GRANULAR BITUMINOUS MATERIAL FOR TACK COAT BITUMINOUS PAVEMENT SIGN PANELS TYPE C INSTALL SIGN TYPE C AND POST STORM SEWER PIPE DRIVEWAY CULVERTS RANDOM RIP RAP CLASS III SILT FENCE SEEDING EROSION CONTROL BLANKET PAVEMENT MESSAGE STRIPING WETLAND IMPACTS ROW ACQUISITION CTY RD 10 IMPROVEMENTS Units Qty Unit Price LUMP 1 $ 20,000.00 ACRE $ 45,000.00 LUMP 1 $ 5,000.00 TREE $ 300.00 TREE $ 100.00 SY 2,600 $ 3.00 SY 4,400 $ 3.10 CU YD 1,000 $ 20.00 3,183 $ CU YD 15.00 3,600 $ CU YD 25.00 1,936 $ TON 12.00 308 $ TON 40.00 2,904 $ TON 15.00 200 $ GAL 4.00 1,849 $ TON 90.00 SF $ 33.00 EACH $ 250.00 LF $ 75.00 1 $ EACH 800.00 CU YD $ 120.00 1,980 $ LF 2.00 6,000 $ SY 0.50 6,000 $ SY 1.50 EACH $ 125.00 2,700 $ LF 0.60 0.5 $ 55,000.00 ACRE ACRE OPTION B1 A MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 20,000.00 5,000.00 7,800.00 13,640.00 20,000.00 47,740.00 90,000.00 23,232.00 12,320.00 43,560.00 800.00 166,428.00 800.00 3,960.00 3,000.00 9,000.00 1,620.00 27,500.00 496,400.00 99,280.00 74,460.00 670,140.00 700,000.00 CTY RD 10 & CTY RD 50 INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 30,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE TRAFFIC CONTROL LUMP 1 $ 5,000.00 CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 REMOVE BITUMINOUS PAVEMENT SY 3.00 4,911 $ FABRIC SY 3.10 10,400 $ TOPSOIL CU YD 20.00 2,000 $ COMMON EXCAVATION CU YD 7,523 $ 15.00 AGGREGATE BASE CLASS 5 TON 4,576 $ 12.00 AGGREGATE BASE SURGACING CLASS 2 TON 40.00 616 $ SELECT GRANULAR TON 15.00 6,864 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 480 $ BITUMINOUS PAVEMENT TON 4,438 $ 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 DRIVEWAY CULVERTS EACH 1 $ 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 SILT FENCE LF 3,740 $ 2.00 SEEDING SY 12,000 $ 0.50 EROSION CONTROL BLANKET SY 12,000 $ 1.50 PAVEMENT MESSAGE EACH $ 125.00 STRIPING LF 9,000 $ 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ SIGNAL EACH 1 $250,000.00 OPTION B1 A INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 30,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 14,733.33 32,240.00 40,000.00 112,840.00 54,912.00 24,640.00 102,960.00 1,920.00 399,427.20 800.00 7,480.00 6,000.00 18,000.00 5,400.00 250,000.00 1,106,352.53 221,270.51 165,952.88 1,493,575.92 1,500,000.00 SUMMARY OPTION B1 A MAINLINE SUBTOTAL OPTION B1 A INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 700,000.00 1,500,000.00 2,200,000.00 Assumes Peachtree ROW dedication and excludes any comercial business purchase costs. Exhibit 4. Transportation Feasibility Study Table 4. Option B1-B Estimated Costs Peachtree Development Feasibility Study for Transportation Item MOBILIZATION & DEMOBILIZATION EASEMENT ACQUISITION TRAFFIC CONTROL CLEARING GRUBBING REMOVE BITUMINOUS PAVEMENT FABRIC TOPSOIL COMMON EXCAVATION POOR SOIL CORRECTION AGGREGATE BASE CLASS 5 AGGREGATE BASE SURGACING CLASS 2 SELECT GRANULAR BITUMINOUS MATERIAL FOR TACK COAT BITUMINOUS PAVEMENT SIGN PANELS TYPE C INSTALL SIGN TYPE C AND POST STORM SEWER PIPE DRIVEWAY CULVERTS RANDOM RIP RAP CLASS III SILT FENCE SEEDING EROSION CONTROL BLANKET PAVEMENT MESSAGE STRIPING WETLAND IMPACTS ROW ACQUISITION CTY RD 10 IMPROVEMENTS Units Qty Unit Price LUMP 1 $ 20,000.00 ACRE $ 45,000.00 LUMP 1 $ 5,000.00 TREE $ 300.00 TREE $ 100.00 SY 3.00 1,676 $ SY 3.10 2,836 $ CU YD 20.00 644 $ CU YD 15.00 2,051 $ 2,800 $ CU YD 25.00 1,248 $ TON 12.00 198 $ TON 40.00 1,871 $ TON 15.00 129 $ GAL 4.00 1,192 $ TON 90.00 SF $ 33.00 EACH $ 250.00 LF $ 75.00 1 $ EACH 800.00 CU YD $ 120.00 1,276 $ LF 2.00 3,867 $ SY 0.50 3,867 $ SY 1.50 EACH $ 125.00 1,740 $ LF 0.60 0.60 $ 55,000.00 ACRE ACRE OPTION B1 B MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 20,000.00 5,000.00 5,026.67 8,790.22 12,888.89 30,765.78 70,000.00 14,971.73 7,939.56 28,072.00 515.56 107,253.60 800.00 2,552.00 1,933.33 5,800.00 1,044.00 33,000.00 $ $ $ $ $ 356,353.33 71,270.67 53,453.00 481,077.00 500,000.00 CTY RD 10 & CTY RD 50 INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 30,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE 1 $ 5,000.00 TRAFFIC CONTROL LUMP CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 4,911 $ REMOVE BITUMINOUS PAVEMENT SY 3.00 10,400 $ FABRIC SY 3.10 2,000 $ TOPSOIL CU YD 20.00 7,523 $ COMMON EXCAVATION CU YD 15.00 4,576 $ AGGREGATE BASE CLASS 5 TON 12.00 616 $ AGGREGATE BASE SURGACING CLASS 2 TON 40.00 6,864 $ SELECT GRANULAR TON 15.00 480 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 4,438 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 1 $ DRIVEWAY CULVERTS EACH 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 3,740 $ SILT FENCE LF 2.00 12,000 $ SEEDING SY 0.50 12,000 $ EROSION CONTROL BLANKET SY 1.50 PAVEMENT MESSAGE EACH $ 125.00 9,000 $ STRIPING LF 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ 1 $ 250,000.00 SIGNAL EACH OPTION B1 B INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 30,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 14,733.33 32,240.00 40,000.00 112,840.00 54,912.00 24,640.00 102,960.00 1,920.00 399,427.20 800.00 7,480.00 6,000.00 18,000.00 5,400.00 250,000.00 1,106,352.53 221,270.51 165,952.88 1,493,575.92 1,500,000.00 SUMMARY OPTION B1 B MAINLINE SUBTOTAL OPTION B1 B INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 500,000.00 1,500,000.00 2,000,000.00 Exhibit 4. Transportation Feasibility Study Table 5. Option B2 Estimated Costs Peachtree Development Feasibility Study for Transportation Item MOBILIZATION & DEMOBILIZATION EASEMENT ACQUISITION TRAFFIC CONTROL CLEARING GRUBBING REMOVE BITUMINOUS PAVEMENT FABRIC TOPSOIL COMMON EXCAVATION POOR SOIL CORRECTION AGGREGATE BASE CLASS 5 AGGREGATE BASE SURGACING CLASS 2 SELECT GRANULAR BITUMINOUS MATERIAL FOR TACK COAT BITUMINOUS PAVEMENT SIGN PANELS TYPE C INSTALL SIGN TYPE C AND POST STORM SEWER PIPE DRIVEWAY CULVERTS RANDOM RIP RAP CLASS III SILT FENCE SEEDING EROSION CONTROL BLANKET PAVEMENT MESSAGE STRIPING WETLAND IMPACTS ROW ACQUISITION CONCRETE MEDIAN CTY RD 10 MAINLINE IMPROVEMENTS Units Qty Unit Price LUMP 1 $ 25,000.00 ACRE $ 45,000.00 LUMP 1 $ 5,000.00 TREE $ 300.00 TREE $ 100.00 SY 3.00 1,444 $ SY 3.10 2,444 $ CU YD 20.00 556 $ 1,768 $ CU YD 15.00 3,100 $ CU YD 25.00 1,076 $ TON 12.00 171 $ TON 40.00 1,613 $ TON 15.00 111 $ GAL 4.00 1,027 $ TON 90.00 SF $ 33.00 EACH $ 250.00 LF $ 75.00 1 $ EACH 800.00 CU YD $ 120.00 1,100 $ LF 2.00 3,333 $ SY 0.50 3,333 $ SY 1.50 EACH $ 125.00 1,500 $ LF 0.60 1 $ 55,000.00 ACRE 3 $ 65,000.00 ACRE SF OPTION B2 MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 25,000.00 5,000.00 4,333.33 7,577.78 11,111.11 26,522.22 77,500.00 12,906.67 6,844.44 24,200.00 444.44 92,460.00 800.00 2,200.00 1,666.67 5,000.00 900.00 27,500.00 182,000.00 513,966.67 102,793.33 77,095.00 693,855.00 700,000.00 CTY RD 10 & CTY RD 50 INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 30,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE 1 $ 5,000.00 TRAFFIC CONTROL LUMP CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 4,622 $ REMOVE BITUMINOUS PAVEMENT SY 3.00 10,400 $ FABRIC SY 3.10 2,000 $ TOPSOIL CU YD 20.00 7,523 $ COMMON EXCAVATION CU YD 15.00 4,576 $ AGGREGATE BASE CLASS 5 TON 12.00 616 $ AGGREGATE BASE SURGACING CLASS 2 TON 40.00 6,864 $ SELECT GRANULAR TON 15.00 480 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 4,438 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 1 $ DRIVEWAY CULVERTS EACH 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 3,520 $ SILT FENCE LF 2.00 12,000 $ SEEDING SY 0.50 12,000 $ EROSION CONTROL BLANKET SY 1.50 PAVEMENT MESSAGE EACH $ 125.00 9,000 $ STRIPING LF 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ 1 SIGNAL EACH $ 250,000.00 OPTION B2 INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 30,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 13,866.67 32,240.00 40,000.00 112,840.00 54,912.00 24,640.00 102,960.00 1,920.00 399,427.20 800.00 7,040.00 6,000.00 18,000.00 5,400.00 250,000.00 1,105,045.87 221,009.17 165,756.88 1,491,811.92 1,500,000.00 SUMMARY OPTION B2 MAINLINE SUBTOTAL OPTION B2 INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 700,000.00 1,500,000.00 2,200,000.00 Exhibit 4. Transportation Feasibility Study Table 6. Option B3 Estimated Costs Peachtree Development Feasibility Study for Transportation PEACHTREE ACCESS MAINLINE IMPROVEMENTS Item Units Qty Unit Price MOBILIZATION & DEMOBILIZATION LUMP 1 $ 25,000.00 EASEMENT ACQUISITION ACRE $ 45,000.00 TRAFFIC CONTROL LUMP 1 $ 5,000.00 CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 REMOVE BITUMINOUS PAVEMENT SY 3.00 1271 $ FABRIC SY 3.10 2151 $ TOPSOIL CU YD 20.00 489 $ 1556 $ COMMON EXCAVATION CU YD 15.00 1900 $ POOR SOIL CORRECTION CU YD 25.00 946 $ AGGREGATE BASE CLASS 5 TON 12.00 151 $ AGGREGATE BASE SURGACING CLASS 2 TON 40.00 1420 $ SELECT GRANULAR TON 15.00 98 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 904 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 DRIVEWAY CULVERTS EACH $ 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 968 $ SILT FENCE LF 2.00 2933 $ SEEDING SY 0.50 2933 $ SY 1.50 EROSION CONTROL BLANKET PAVEMENT MESSAGE EACH $ 125.00 1320 $ LF 0.60 STRIPING 0.5 $ 55,000.00 WETLAND IMPACTS ACRE ROW ACQUISITION ACRE OPTION B3 MAINLINE SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 25,000.00 5,000.00 3,813.33 6,668.44 9,777.78 23,339.56 47,500.00 11,357.87 6,023.11 21,296.00 391.11 81,364.80 1,936.00 1,466.67 4,400.00 792.00 27,500.00 $ $ $ $ $ 277,626.67 55,525.33 41,644.00 374,796.00 400,000.00 PEACHTREE ACCESS RD & CTY RD 50 INTERSECTION IMPROVEMENTS Item Units Qty Unit Price 1 $ 30,000.00 MOBILIZATION & DEMOBILIZATION LUMP EASEMENT ACRE 1 $ 5,000.00 TRAFFIC CONTROL LUMP CLEARING TREE $ 300.00 GRUBBING TREE $ 100.00 REMOVE BITUMINOUS PAVEMENT SY 3.00 3120 $ 6240 $ FABRIC SY 3.10 1200 $ TOPSOIL CU YD 20.00 4514 $ COMMON EXCAVATION CU YD 15.00 2746 $ AGGREGATE BASE CLASS 5 TON 12.00 370 $ AGGREGATE BASE SURGACING CLASS 2 TON 40.00 4118 $ SELECT GRANULAR TON 15.00 288 $ BITUMINOUS MATERIAL FOR TACK COAT GAL 4.00 2663 $ BITUMINOUS PAVEMENT TON 90.00 SIGN PANELS TYPE C SF $ 33.00 INSTALL SIGN TYPE C AND POST EACH $ 250.00 STORM SEWER PIPE LF $ 75.00 1 $ DRIVEWAY CULVERTS EACH 800.00 RANDOM RIP RAP CLASS III CU YD $ 120.00 2376 $ LF 2.00 SILT FENCE 7200 $ SEEDING SY 0.50 7200 $ EROSION CONTROL BLANKET SY 1.50 PAVEMENT MESSAGE EACH $ 125.00 5400 STRIPING LF $ 0.60 WETLAND IMPACTS SF $ 1.00 PROPERTY ACQUISITION EACH $ 1 $ 250,000.00 SIGNAL EACH OPTION B3 INTERSECTION SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL $ Total Price 30,000.00 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 5,000.00 9,360.00 19,344.00 24,000.00 67,704.00 32,947.20 14,784.00 61,776.00 1,152.00 239,656.32 800.00 4,752.00 3,600.00 10,800.00 3,240.00 250,000.00 778,915.52 155,783.10 116,837.33 1,051,535.95 1,100,000.00 SUMMARY OPTION B3 MAINLINE SUBTOTAL OPTION B3 INTERSECTION SUBTOTAL TOTAL PROJECT COSTS $ $ $ Total Price 400,000.00 1,100,000.00 1,500,000.00 ` Exhibit 4. Transportation Feasibility Study Table 7. Option B4 Estimated Costs Peachtree Development Feasibility Study for Transportation Item MOBILIZATION & DEMOBILIZATION EASEMENT ACQUISITION TRAFFIC CONTROL CLEARING GRUBBING REMOVE BITUMINOUS PAVEMENT FABRIC TOPSOIL COMMON EXCAVATION POOR SOIL CORRECTION AGGREGATE BASE CLASS 5 SELECT GRANULAR BITUMINOUS MATERIAL FOR TACK COAT BITUMINOUS PAVEMENT CONCRETE PAVEMENT CONCRETE CURB AND GUTTER INSTALL SIGN TYPE C AND POST STORM SEWER PIPE STORM SEWER STRUCTURES RANDOM RIP RAP CLASS III SILT FENCE SEEDING EROSION CONTROL BLANKET STRIPING ROUND-A-BOUT LANDSCAPING FOR ISLAND WETLAND IMPACTS ROW ACQUISITION Roundabout Units LUMP ACRE LUMP TREE TREE SY SY CU YD CU YD CU YD TON TON GAL TON SF LF EACH LF EACH CU YD LF SY SY LF LS ACRE Qty Unit Price 1 $ 100,000.00 $ 45,000.00 1 $ 5,000.00 $ 300.00 $ 100.00 4,564 $ 3.00 4,916 $ 3.10 1,756 $ 20.00 3,556 $ 15.00 6,800 $ 25.00 2,163 $ 12.00 3,469 $ 15.00 211 $ 4.00 1,948 $ 90.00 10,000 $ 10.00 3,185 $ 25.00 30 $ 300.00 500 $ 50.00 5 $ 3,500.00 25 $ 120.00 2,000 $ 2.00 10,533 $ 0.50 10,533 $ 1.50 4,740 $ 0.60 1 $ 10,000.00 0.5 $ 55,000.00 OPTION B4 SUBTOTAL CONTINGENCY (30%) PERMITTING AND APPROVALS ENGINEERING (15%) EST. TOTAL ROUNDED TOTAL Exhibit 4. Transportation Feasibility Study $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Total Price 100,000.00 5,000.00 13,693.33 15,238.22 35,111.11 53,333.78 170,000.00 25,954.13 52,039.00 842.67 175,304.16 100,000.00 79,625.00 9,000.00 25,000.00 17,500.00 3,000.00 4,000.00 5,266.67 15,800.00 2,844.00 10,000.00 27,500.00 946,052.07 283,815.62 50,000.00 141,907.81 1,421,775.50 1,500,000.00 Figures Exhibit 4. Transportation Feasibility Study Exhibit 4. Transportation Feasibility Study Exhibit 4. Transportation Feasibility Study Exhibit 4. Transportation Feasibility Study Exhibit 4. Transportation Feasibility Study Appendix A Peachtree Concept Entrance to 50 Classification Figure Traffic Counts Zoning & Lot Information Current Zoning - RMF-3 High Density Residential Proposed Zoning - PUD Planned Unit Development Proposed Minimum Lot Widths = 55’,65’,75’ Proposed Minimum Lot Depth – 120’ Proposed Lot Setbacks • Front = 25’ • Side = 5’ and 10’ • Rear = 30’ Proposed Townhome Setbacks • Front = 20’ • Side = 20’ • Rear = 30’ • Between Townhome Structure = 20’ Proposed Right-of-way = 50’ Fletcher Lane (CR 116) Trail Restored Wetland Gross Density Property Area = 103.3 acres 55’ Wide Lots = 75 65’ Wide Lots = 93 75’ Wide Lots = 70 Proposed Number of Lots = 226 Proposed Number of Townhomes = 23 249 Total Residential Units Gross Density = 2.4 units/acre Overlook LEGEND 55’ Wide Residential Lot Net Density Property Area = 103.3 acres Wetlands Not Impacted by Development = 10 ac Wetland Buffer Not Impacted by Development = 4.34 ac Flood Plain without Wetlands and Buffer = 1.25 ac Ponds In Open Space = 2.2 ac Right-of-way = 15.6 ac 30’ Wide Trail Easement = 3.6 ac Net Developable Acreage = 66.3 ac Net Density = 3.76 units/acre 65’ Wide Residential Lot 75’ Wide Residential Lot Townhome (Southeast Parcel) Flood Plain Wetland Open Space Sidewalk Trail Rebecca Park Trail (CR 50) Future Trail 0 200 500 Schendel - PUD Sketch Plan - 06.03.2014 Exhibit 4. Transportation Feasibility Study Project #_193802580 N TOWNSHIP OF HASSAN Country Rd $ + 95th Ave Patrick Pl Meister Ct 116 RU W Corcoran Tr e gl Ea Winchester Tr t Willow Dr EE K 81st Pl Proposed A Minor Connector Minor Collector Proposed Minor Collector COOK LAKE Olde Sturbridge Rd Local Street City Limit Gleason Rd eN La Hunter Rd County Rd 116 66th Av 63rd Ave N rth CITY OF MEDINA Trail La wo tter r Bu dD State Hwy 55 a Elm St il L Tra Mohawk Dr Rolling Hills Rd A Minor Expander Abilene La Rd Be n Horseshoe Tr MORIN LAKE Wagon Wheel La Exhibit 4. Transportation Feasibility Study A Minor Reliever rs tle se sho e Lakeview Cir Principal Arterial Open Water t Se Ho r ee rT r 81st P l d Ol LAKE 2030 Roadway Functional Classification: County Hwy 101 70th Ave N Buckskin Tr La er t Ju b le S Bel Homestead Tr Bluebonnet Dr 50 $ + Nystrom La JUBERT 3,000 Feet Proposed Major Collector Auger Ave Larkin Rd Pi on CR 75th Ave N SCOTT LAKE 0 Major Collector County Hwy 50 19 $ + 1,500 A Minor Connector SH d Kalk Rd 50 $ + 4 Proposed A Minor Expander Maple Hill Rd hl er R 3,000 GOOSE LAKE $ + Ridge Rd Rebecca Park Tr 10 $ + Commerce St St re Meister Rd Cain Pl E Corcoran Tr County Hwy 19 Julie Ann Dr 101 Sc hutte Rd Cain Rd Trail Haven Rd Strehler Rd $ + CITY OF MAPLE GROVE Schutte Farm Rd Larson Rd Salem La Brandywine Rd Mystique Dr Proposed as Part of NW Hennepin Study Foxline Dr Bechtold Rd Garrison Rd 97th Ave N Shannon La $ + 2030 Roadway Functional Classification 2030 Comprehensive Plan d Duffney Dr Fox Valley Dr Hill La Sunny 93rd Ave N 10 Hunters Ridge Fa Lily Pon d Osw al 30 County Hwy 10 CITY OF GREENFIELD 101st Ave La Tr Chis holm uf fL Tamiami Tr Hi gh Bl Garden La Sundance Rd lv d Woodland Tr d Hillside Dr r m Rd a r a D High Ridg land e Rd yL kB Proposed as Part of NW Hennepin Study gR City of Hidden Ponds Dr le Ebert Rd fer Jef Rush Cr e e Sti e Darrel La O ak da CORCORAN Country Cir E Stieg Rd Tessmer Rd 19 $ + Robert La Proposed as Part of NW Hennepin Study r Figure 16 Dassel La Heather La Meadowview Dr kD Rush C Oakdale Dr Jackie La Rush Meadow La a r ee Sun set L Hage Dr Meadow Creek Dr 109th Ave N Brockton Pl Windmill Dr Maple La Ginseng La Jonquil La COUNTY ROAD 117 Updated April 2014 Adopted June 2011 Hackamore Rd (62ND AVE N) TOWNSHIP OF HASSAN CITY OF MAPLE GROVE 12,300 Hennepin County 2030 ADT Forecasts 12,300 2030 ADT Forecasts Road Centerline City Limit 81st P l Maple Hill Rd 81st Pl 00 COOK LAKE 1,660 15,700 *2030 forecast does not take into consideration proposed realignments the City is considering. 63rd Ave N L rth 15,000 Gleason Rd ve N Hunter Rd 66th A 13,700 Elm St wo a CITY OF MEDINA 3,000 Feet County Hwy 101 Buckskin Tr Bluebonnet Dr tter Mohawk Dr Trail La Bu r 26,000 a County Rd 116 470 Willow Dr 1,020 Rolling Hills Rd il L Tra MORIN LAKE 0 Abilene La Rd dD 11,400 2,000 s er ttl Se B en 340 1,500 Open Water K d Ol sho e State Hwy 55 25 ,5 EE Olde Sturbridge Rd Horseshoe Tr Wagon Wheel La Exhibit 4. Transportation Feasibility Study CR 13,700 E Corcoran Tr W Corcoran Tr ag le E Kalk Rd 690 660 t Lakeview Cir 9,000 Larkin Rd Homestead Tr le S Pi o 1,3 neer T 80 r 0 Commerce St 720 1,180 70th Ave N se SH 4 75th Ave N Nystrom La Ho r 4,8 0 Auger Ave er tL Ju b Bel SCOTT LAKE GOOSE LAKE L K ö I a 7,700 Winchester Tr 470 3,000 Meister Ct Cain Rd Meister Rd RU Rd L K ï I Schutte Rd Cain Pl County Hwy 50 LAKE Brandywine Rd Schutte Farm Rd Rid ge Rd JUBERT 27,500 95th Ave Patrick Pl Trail Haven Rd County Hwy 19 9,000 Julie Ann Dr H G s E 17,300 18,000 2030 Comprehensive Plan Mystique Dr Strehler Rd H G ¼ E 46,100 2030 Average Daily Traffic Volume Forecasts (ADT) 19,700 1,060 Fa 520 Lily Pon d La Tr holm Chis Fox Valley Dr Bechtold Rd Hill La Sunny 17,400 97th Ave N Larson Rd 7,800 8,900 Hunters Ridge d Foxline Dr CITY OF GREENFIELD Osw a l H G ¢ E Garrison Rd St re hl er CORCORAN d Shannon La H G i E gR 101st Ave 93rd Ave N 4,4 00 Rebecca Park Tr Sti e 51 0 City of Hillside Dr r m Rd r Duffney Dr D a fL Tamiami Tr Bl uf Hi gh Garden La Sundance Rd l vd 8,700 kB 4,400 County Hwy 10 Salem La 300 Hidden Ponds Dr le High Ridg land e Rd ak da a Rush Cr e e 8,650 Woodland Tr Country Rd Stieg Rd Ebert Rd L fery Jef O Figure 22 Country Cir E Darrel La Tessmer Rd H G s E 10,000 Brockton Pl 500 r Dassel La Heather La Meadowview Dr kD Robert La Rush Meadow La Rush C Oakdale Dr Jackie La 11,600 et L a r ee Maple La Sun s Hage Dr Meadow Creek Dr 109th Ave N 20,200 Windmill Dr 12,300 13,600 Ginseng La Jonquil La COUNTY ROAD 117 I:/504/50408144/GIS/ComPlan/Maps/2030 ADT.mxd Hackamore Rd (62ND October 7, 2009 AVE N) Appendix B County 10 Turn Back Memo Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359-0249 (800) 472-2232 (763) 479-4200 Fax (763) 479-4242 [email protected] www.wenck.com ENGINEER’S MEMORANDUM TO: Brad Martens, City Administrator FROM: Kent Torve, P.E. and Heather Libby, P.E. DATE: July 3, 2014 SUBJECT: County Road 10 Turnback Background This memo presents basic information on a turnback and the costs associated with future maintenance and some benefits for future development. Turnback Length The City operates 102 miles of roads, of which 25 are paved (information taken from Dust Control presentation). The potential turnback of County Road 10 from County Road 19 to County Road 50 is approximately 5.0 miles (Figure 1). The road is currently a 24-foot wide rural section roadway. Developments Currently the County reviews all developments through its access permit process for impacts to the regional system. This review ranges from single access to homes, 40-acre and 4 lot splits, to large developments (Lennar/Peachtree). The County reviews impact studies and typically requests additional ROW and comments from the City during development approval process. If the turnback occurred, the review by the County would not be necessary. County History of Maintenance The following text was received from the County’s Road and Bridge Operations Division. This section of roadway, was last overlayed in 2003. Generally our overlays have lasted between 12 and 15 years. The 2013 Present Serviceability Rating (PSR), or ride rating, is 3.14. Our current practice is to place a roadway onto the overlay candidates list once the PSR drops below 2.5. C:\Users\TorKC0063\Documents\Corcoran Offsite\2_Development Projects\2_Schendel\county 10 turnback memo Thursday.docx Exhibit 4. Transportation Feasibility Study Based on the above information I would estimate that the next overlay would not happen until 2016 or 2017 at the earliest. Maintenance Costs Below is a summary of the potential maintenance costs associated with maintaining five additional miles of roadway: Item Crack Repair Striping Mill/overlay Reconstruct Frequency annual annual every 12-15 years every 30 years Cost/mi $1,000 $1,000 $150,000 $ 1,600,000 ~Cost for 5 mi $5,000 $5,000 $750,000 $8,000,000 Seal coating is used in certain areas of the state on high speed roads. This may be an option for CR10 as a City road in years 7 and 14 to reduce maintenance costs, and are estimated at $40,000/mile or $200,000 for 5 miles and delays the mill/overlay to a 20 year frequency. Process for Turnback CR 10 is currently listed on the County’s turnback plan, where the County wants to divest itself of selected roads throughout the County. Timing will be based on City request, and Corcoran has had a more recent turnback with “half” of Old CR 101 near Lions Park being turned back to Maple Grove and Corcoran. The reimbursement to the City was estimated, and cash was given to the Cities in lieu of overlay. Specific negotiations do occur on segments that benefit both parties. County Feedback on January Inquiry The County’s answers to selected questions from January of 2014 are attached in email from Jim Grube of Hennepin County. C:\Users\TorKC0063\Documents\Corcoran Offsite\2_Development Projects\2_Schendel\county 10 turnback memo Thursday.docx Exhibit 4. Transportation Feasibility Study Garden La ak O da le Dr 7 6 5 4 Legend County Highway 10 30 Municipal Boundary 7 6 5 4 Fox Valley Dr 5.01 Miles of County Rd 10 turn back to City Parcels Patrick Pl 10 Foxline Dr 93rd Ave N Cain Rd Bechtold Rd Schutte Rd Trail Haven Rd Larson Rd Strehler Rd Cain Pl Meister Rd 7 6 5 4 © ¨ 19 116 E Corcora 0 1,700 Feet Path: L:\2294\01\mxd\CountyRd10Turnback.mxd Date: 6/26/2014 Time: 8:20:41 AM User: KacHD0606 ± 7 6 5 4 50 Kalk Rd 850 Rolling Hills Rd 1,700 n Tr 2012 Aerial Photograph (Source: ESRI) Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community TIF DISTRICT STUDY Option 1 - Downtown Alignment County Road 10 Turnback Exhibit 4. Transportation Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JUNE 2014 Figure 1 Email Attachment Kent C. Torve Subject: FW: follow up from January 21st meeting From: James Grube [mailto:[email protected]] Sent: Friday, March 07, 2014 3:40 PM To: Brad Martens Cc: Brian Langseth; Craig Twinem; Gregory M. Chock; Harlan Hanson; Jay R Baldwin; Thomas D. Johnson Subject: RE: follow up from January 21st meeting Mr. Mertens, I offer that the information provided below within the email you have sent me is my attempt to meet the city’s desire. It does not constitute the final Hennepin County position on the series of questions tendered below. The responses are offered to help further discussion of the implications of decision making. I consider emails to be an alternative to official communication and the city needs to recognize that the short response time that you have given the county for such leaves me uncomfortable with any assumption of official status. This exchange has not been vetted with either Hennepin County administration or Hennepin County Commissioner Jeff Johnson. With that in mind please know we will do whatever we can at the staff level to help the city as it strives to make important and meaningful long term decisions. Jim Grube, P.E. Director, Transportation Department, and County Engineer Hennepin County 1600 Prairie Drive Medina, MN 55340 Office: 612-596-0305 Cell: 612-250-2615 [email protected] From: [email protected] Sent: Wednesday, February 26, 2014 3:29 PM To: James Grube Cc: Carla J Stueve; Ken Guenthner ([email protected]); [email protected] Subject: follow up from January 21st meeting Mr. Grube, This email is in follow up to a meeting on February 21, 2014 in which the City of Corcoran requested information from Hennepin County regarding proposed alignment changes to County Road 10. The City appreciated the opportunity to discuss this opportunity to make changes to the transportation system within the City of Corcoran to improve safety as well as to meet our long-term transportation needs. As stated at the meeting, the City is currently reviewing two proposed projects near the County Road 10/County Road 50 intersection. The County and the City are well aware that this intersection is less than ideal in its current alignment and would prefer to make improvements to the transportation system in this area. The two projects moving forward provide a window of opportunity to make the change at this time in order to avoid further challenges in the future. To that end the City is requesting that you respond to the below questions regarding three scenarios in order for the City to best use this opportunity to improve transportation the betterment of the City of Corcoran and Hennepin County. It is Exhibit 4. Transportation Feasibility Study 1 important that a response be received by Tuesday, March 11th as the City will discuss the information from the response at a March 13th strategic planning workshop. A response via email, letter, or a personal meeting is fine. Scenario #1: County Road 10 is realigned along Meister Road and is “turned back” to the City of Corcoran from County Road 19 to County Road 116 upon completion as a local road. If this were to take place please answer the following: 1. Is the County in favor of this scenario? County staff supports the turnback of County Road 10 to the city. This is stated in the county’s Transportation Systems Plan. Thus if Meister Road becomes the main connection to County Road 116 the county offers no comment on how Meister Road is configured since it would remain a city street. 2. Does the County have a requirement of any standard of road construction? The county does not have design requirements for local streets. 3. What infrastructure would be required at the intersection of the new road and County Road 116? a. Turn lanes on the new road. b. Turn lanes on County Road 116. Southbound right turn land and northbound left turn lane. c. Traffic control devices. Any traffic control devices would need to meet required warrants in accordance with the Minnesota Manual of Uniform Traffic Control Devices (MMUTCD), and be justified as outlined in the county’s Cost Participation Policy. d. Other. 4. What role would the County play in the project? a. County takes the lead. b. City takes the lead with County approval. If the outcome is that there is no county road between County Roads 19 and 50, the county would see itself in a support role, essentially looking at the intersections of County Roads 19 and 116. 5. What would the County contribute to the project? The county has traditionally either provided a pavement overlay of the roadway to be turned back to a city, or if desired, the cash equivalent of the overlay. a. Financial assistance in the new construction. The county does not normally provide such assistance when the work occurs on a city street. b. Financial assistance for the City taking on the roadway for the County. As noted above, the value of an overlay. c. Financial assistance to abandon the now unused roadway. See above. d. Design assistance. Not in this case. e. Other. 6. If this option is accepted what is a logical timeline for project completion? If the city was willing to accept either the overlay of County Road 10 or the cash equivalent for accepting it into its local system, the reversion could occur in 2014, if supported by the County Board. If there is a desire for a different arrangement, serious discussions relative to the city’s position on financial assistance would need to occur. Scenario #2: County Road 10 is realigned along Meister Road but continues to be a County Road. If this were to take place please answer the following: 1. Is the County in favor of this scenario? This scenario is not preferred by county staff. 2. Does the County have a requirement of any standard of road construction? If the realignment of County Road 10 along Meister Road occurs, the new county road would have to be designed to state aid standards. 3. What infrastructure would be required at the intersection of the new road and County Road 116? See the response offered under scenario #1. a. Turn lanes on the new road. 2 Exhibit 4. Transportation Feasibility Study b. Turn lanes on County Road 116. c. Traffic control devices. d. Other. 4. What role would the County play in the project? a. County takes the lead. b. City takes the lead with County approval. The county’s Capital Improvement Program (CIP) is overprogrammed, with no staff resources available for at least 5 to 7 years, if such a project is deemed worthy of inclusion in the CIP by the County Board. 5. What would the County contribute to the project? To provide any financial assistance beyond the value of an overlay of the existing County Road 10 segment, a proposed project would have to compete for funding through the county’s CIP evaluation process. a. Financial assistance in the new construction. b. Financial assistance for the City taking on the roadway for the County. c. Financial assistance to abandon the now unused roadway. d. Design assistance. e. Other. 6. If this option is accepted what is a logical timeline for project completion? As noted above the county’s CIP is over-programmed with an approximate 7 to 10 year wait for supported projects to be funded. Scenario #3: County Road 10 continues to connect with County Road 50 however the alignment is changed to “T” up to County Road 50. If this were to take place please answer the following: 1. Is the County in favor of this scenario? This is the second choice of county staff, if the long term vision of County Road 10 turnback is not viable in the opinion of the City Council. 2. Does the County have a requirement of any standard of road construction? The design would have to meet state aid standards. 3. What infrastructure would be required at the intersection of the new road and County Road 116? Please refer to scenario #1 if Meister Road is to develop as a city collector street and to intersect with 116. a. Turn lanes on the new road. b. Turn lanes on County Road 116. c. Traffic control devices. d. Other. 4. What role would the County play in the project? a. County takes the lead. b. City takes the lead with County approval. See the answer of this question for scenario #2. 5. What would the County contribute to the project? This type of project would also need to compete for CIP funding, just as I note above. a. Financial assistance in the new construction. b. Financial assistance for the City taking on the roadway for the County. c. Financial assistance to abandon the now unused roadway. d. Design assistance. e. Other. 7. If this option is accepted what is a logical timeline for project completion? As noted above the county’s CIP is over-programmed with an approximate 7 to 10 year wait for supported projects to be funded. 3 Exhibit 4. Transportation Feasibility Study 6. If a residential neighborhood were developed along the existing CR 10 alignment would the 30 mph speed limit be extended to the extent of the neighborhood? While we recognize the desire to reduce traffic speeds, a speed reduction would be post development, not pre-development if you will. This probably needs a bit more conversation because County Road 10 is an arterial, not a neighborhood street. In addition to answering the above questions the City is interested in learning what the maintenance plan is for County Road 10 within the City of Corcoran. Please provide this information in your response. There is not an extraordinary plan for County Road 10. It would receive an overlay when needed with crack sealing shortly thereafter to support the investment. We do not have immediate plans for sidewalk or off road trails, either. Thank you in advance for your time and assistance. Please don’t hesitate to contact me with any questions. If there are challenges in answering all of the questions in the timeframe above please send anything you have instead of waiting for all of the answers to come together. Sincerely, Brad Martens City Administrator City of Corcoran 763-400-7030 www.ci.corcoran.mn.us Disclaimer: Information in this message or an attachment may be government data and thereby subject to the Minnesota Government Data Practices Act, Minnesota Statutes, Chapter 13, may be subject to attorney-client or work product privilege, may be confidential, privileged, proprietary, or otherwise protected, and the unauthorized review, copying, retransmission, or other use or disclosure of the information is strictly prohibited. If you are not the intended recipient of this message, please immediately notify the sender of the transmission error and then promptly delete this message from your computer system. 4 Exhibit 4. Transportation Feasibility Study Appendix C Traffic Analysis Memorandum 1800 Pioneer Creek Center, Maple Plain, MN 55359 Phone: 763-479-4200 Fax: 763-479-4242 Exhibit 4. Transportation Feasibility Study Exhibit 5. Stormwater Feasibility Study Wenck File #2294-24 JULY 2014 Stormwater Feasibility Study Peachtree Development Prepared for: THE CITY OF CORCORAN, MN 8200 County Road 116 Corcoran, MN 55340 Prepared by: WENCK ASSOCIATES, INC. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, Minnesota 55359-0249 (763) 479-4200 Table of Contents 1.0 INTRODUCTION ........................................................................................................1-1 2.0 WATER RESOURCES ..................................................................................................2-1 2.1 2.2 2.3 2.4 2.5 2.6 3.0 Regulatory Agencies ........................................................................................... 2-1 Wetlands ............................................................................................................. 2-1 Water Quantity ................................................................................................... 2-2 Water Quality...................................................................................................... 2-2 Floodplain ........................................................................................................... 2-2 Erosion and Sediment Controls .......................................................................... 2-2 RECOMMENDATIONS ...............................................................................................3-1 FIGURES 1 FEMA Floodplain APPENDICES Appendix A: Appendix B: Appendix C: City Water Resources Plan & Historical Photos MNRAM Review Filtration BMP Details T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\Stormwater Feasibility Study.docx i July 2014 1.0 Introduction Peachtree Properties is proposing a development near the “10-50” intersection in Corcoran on property known as the Schendel property. Three feasibility studies are being completed for the project and they involve transportation, utilities and stormwater. The development area is shown on Figure 1, which also shows the 100 and 500 year floodplains. This report introduces topics pertinent to the development in stormwater management, natural resources, floodplain and Best Management Practices. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\Stormwater Feasibility Study.docx 1-1 July 2014 2.0 2.1 Water Resources Regulatory Agencies The City is responsible for development approvals, however residential and commercial site development plans must also be reviewed and approved by Elm Creek Watershed. A developer is required to plan for water quality design, hydrology design, any compensatory floodplain mitigation plan for floodplain fill, a wetland replacement plan and an erosion and sediment control plan. During construction, the MPCA’s NPDES Construction Permit is also required for control of erosion and sediment and also BMPs. 2.2 Wetlands A wetland delineation has been reviewed and approved for all areas of this site. The Elm Creek Watershed Management Commission is the Local Government Unit in charge of administering the Wetland Conservation Act in CorcoranA wetland replacement plan will be necessary for any impacts to wetlands on site. The replacement plan must include a sequencing analysis for each impact and abide by the Commissions wetland review process. Recent Work A MnRAM analysis was performed to review wetland classification in March of 2014, and the wetlands on the site are all classified as Medium or High according to the City’s classification system. Section 1020.020 of the City Ordinance demonstrates that wetlands are to be ranked as high, medium, or low quality based on the functional level ranking of six selected categories from the MnRAM analysis: Floral Diversity/Integrity, Flood/Stormwater Attenuation, Water Quality Protection, Wildlife and/or Fishery Habitat, and Aesthetic/Recreation. The majority of the wetlands were observed to have low quality vegetation communities, but the high and moderate scores in other categories led to the medium or high rankings by the City’s classification system. This indicates potential to improve these vegetation communities through restoration or management efforts. Buffers Buffers will be required around impacted and replacement wetlands according to the City and WCA rules and the Commission’s wetland review process. A buffer would also be required on any portion of Rush Creek. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\Stormwater Feasibility Study.docx 2-1 July 2014 2.3 Water Quantity The Commission requires post development runoff rates for the 2, 10 and 100-year storm events be equal to or less than the pre-development rates. The Commission standards include extended detention and /or runoff volume controls. The City and watershed both review these calculations for overall stormwater management. The downstream creek/stream is the nearest regional water resource and therefore the extended detention review is important to overall peak flow management. Urbanizing watersheds impact rural ditches/streams through continuous flow, whereas agricultural land can be intermittent streams and the stream has adapted to being dry, or drier, for a portion of the year. The City will conduct a walkthrough of the downstream creek, and review the condition for any susceptible areas of degredation. This stream is located on private property, so the City may be limited in its investigation by property access. 2.4 Water Quality The project must comply with the Commission’s non-degradation standard for storm water runoff quality, as outlined in Appendix F of the Watershed Management Plan. The City implements a BMP of filtration, which can be utilized as standalone dry basins, or constructed within a typical NURP pond. A detail for the required BMP is given in Appendix B. 2.5 Floodplain The site has a minor area identified on the north as floodplain, which appears unaffected by the project. Should impacts occur, the Elm Creek WMC standards prohibit activities that impact the storage volume within the 100-year floodplain unless compensatory floodplain mitigation is provided at a 1:1 ratio by volume and it is demonstrated that the 100-year floodplain will not be impacted. Section 1050.030 of the City’s code states the Engineer should review the boundary for accuracy. “Where interpretation is needed as to the exact location of the boundaries of the district as shown on the Official Zoning Map, as for example where there appears to be a conflict between a mapped boundary and actual field conditions and there is a formal appeal of the decision of the City Engineer, the City Council shall make the necessary interpretation. All decisions will be based on elevations on the regional (100-year) flood profile, the ground elevations that existed on the site at the time the Community adopted its initial Floodplain Ordinance, and other available technical data. Persons contesting the location of the district boundaries shall be given a reasonable opportunity to present their case to the City Council and to submit technical evidence.” 2.6 Erosion and Sediment Controls An erosion and sediment control plan must be provided that addresses and minimizes erosion during all phases of the development and construction process. This activity is covered under a development’s NPDES permit required by the MPCA (and monitored by the developer and City Engineer). T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\Stormwater Feasibility Study.docx 2-2 July 2014 3.0 Recommendations The Peachtree development on the Schendel property is feasible from a stormwater management and natural resource perspective. It is recommended the following be part of the development review process: On site • Investigate restoring the historical flow path shown on aerials and the City’s storm water plan. Investigation will consist of topographic surveying and designs for potentially discharging further west than the current north discharge point. • Review submittals to watershed and work in coordination with Elm Creek WMC on stormwater BMPs. • Provide the developer modeling and construction parameters for the developed land use (runoff curve numbers, routing direction, structure requirements, etc. • Install filtration BMP in addition to typical wet detention (NURP) ponds • Review wetland mitigation areas and any banking will be reviewed for conflicts with City via covenants or maintenance. Off Site • Conduct walkthrough of stream to north to investigate for areas susceptible to erosion due to additional volume from development. Developer may be required to fund selected reinforcement of streambed, which includes easement for City access. (This was also a requirement of a prior development, Lennar in SE Corcoran.) • Potentially conduct additional floodplain work to identify/verify elevations. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\Stormwater Feasibility Study.docx 3-1 July 2014 Figures FEMA Floodplain 2012 photo shows tree clearing and defined ditch. Earlier photos show trees in this area. See Appendix A. Legend Property Boundarys FEMA Floodplains 100-Year 500-Year 2012 Aerial Photograph (Source: ESRI) 350 175 0 350 Feet Path: L:\2294\0024\mxd\FEMA Flooplains.mxd Date: 7/8/2014 Time: 10:31:40 AM User: ShuJC0243 ± Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community CITY OF CORCORAN FEMA Floodplains Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Appendix A City Water Resources Plan and Historical Aerial Photos COUNTY ROAD 117 27-345 W 27-1099 W 27-167 W Figure 5 27-1091 W ST IE 27-338 W LE DR OAK DA 27-335 W GR D 27-318 W 27-163 W 27-317 W 27-348 W 27-336 W H G s E CORCORAN City of 27-319 W Water Resources 2030 Comprehensive Plan 27-337 W 27-334 W H G ¢ E BECHTOLD ROAD H G E i 27-316 W ROAD 27-441 W 27-443 W ROAD 27-352 W 27-440 W MEISTER ROAD CITY OF MAPLE GROVE SCHUTTE TRAIL HAVEN ROAD 27-351 W GOOSE LAKE L K ö I RU SH CR EE 1,500 0 3,000 Feet City Limit DNR Public Watercourse Other Watercourse DNR Protected Waters Other Open Water Wetlands from Hennepin County MLCCS 27-439 W K 27-429 W 27-1103 W 3,000 4 L K ï I 27-350 W STREHLER 27-442 W 27-315 W CAIN ROAD CITY OF GREENFIELD 27-314 W 27-448 W 27-416 W 27-428 W H G i E 27-353 W H G ¼ E 27-420 W 27-355 W 27-417 W COOK LAKE 27-430 W 27-120 P 27-438 W 27-426 W 27-354 W 27-165 P 27-360 W JUBERT LAKE 27-361 W ON E 27-1102 W ROLLLING HILLS RD SCOTT LAKE RD 27-431 W 27-432 W 27-427 W 27-421 W 27-422 W WILLOW DRIVE H G s E PI LARKIN 27-425 W 27-423 W ER 27-437 W 27-424 W O LD HORSESHOE TRAIL MORIN LAKE TR SE TT LE RS GLEASON ROAD R D October 7, 2009 27-435 W 27-494 W Exhibit 5. Stormwater Feasibility Study 27-493 W 27-433 W 27-436 W 27-434 W HACKAMORE ROAD 27-490 W I:/504/50408144/GIS/ComPlan/Maps/Final Maps/water resources.mxd CITY OF CORCORAN Exhibit 5. Stormwater Feasibility Study Comp Plan Water Resources (Cropped) Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 FIGURE A-1 Path: N:\Technical\XXXX\xx\xx\FILENAME.pptx Date Saved: 9/5/2012 9:04 AM CITY OF CORCORAN 1937 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 FIGURE 1 CITY OF CORCORAN 1947 Aerial Ph otog raph Exhibit 5. Stormwater Feasibility Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 Fig ure 1 CITY OF CORCORAN 1957Feasibility Aerial Photograph Exhibit 5. Stormwater Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 Figure 1 CITY OF CORCORAN 1960 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 Figure 1 CITY OF CORCORAN 1962 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 Figure 1 CITY OF CORCORAN 1971 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359 JULY 2014 Figure 1 Aerial Photograph (Source: MN GEO) 350 175 0 350 Feet Path: L:\2294\0024\mxd\Historical Aerial Photographs.mxd Date: 7/8/2014 Time: 9:34:46 AM User: ShuJC0243 ± CITY OF CORCORAN 1991 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Aerial Photograph (Source: MN GEO) 350 175 0 350 Feet Path: L:\2294\0024\mxd\Historical Aerial Photographs.mxd Date: 7/8/2014 Time: 9:37:43 AM User: ShuJC0243 ± CITY OF CORCORAN 1997 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Aerial Photograph (Source: MN GEO) 350 175 0 350 Feet Path: L:\2294\0024\mxd\Historical Aerial Photographs.mxd Date: 7/8/2014 Time: 9:38:28 AM User: ShuJC0243 ± CITY OF CORCORAN 2000 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Aerial Photograph (Source: MN GEO) 350 175 0 350 Feet Path: L:\2294\0024\mxd\Historical Aerial Photographs.mxd Date: 7/8/2014 Time: 9:36:37 AM User: ShuJC0243 ± CITY OF CORCORAN 2003 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Aerial Photograph (Source: MN GEO) 350 175 0 350 Feet Path: L:\2294\0024\mxd\Historical Aerial Photographs.mxd Date: 7/8/2014 Time: 9:48:45 AM User: ShuJC0243 ± CITY OF CORCORAN 2006 Aerial Photograph Exhibit 5. Stormwater Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 Figure 1 Appendix B MN RAM Review Wenck Associates, Inc. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, MN 55359-0249 (800) 472-2232 (763) 479-4200 Fax (763) 479-4242 [email protected] www.wenck.com TECHNICAL MEMORANDUM TO: City of Corcoran FROM: Wes Boll, Wenck Associates, Inc. DATE: March 18, 2013 SUBJECT: Schendel Property Wetland Functional Assessment Report and Woodland/Forest Evaluation This technical memorandum is prepared by Wenck Associates, Inc. (Wenck) to provide a review of evaluation of woodland/forest areas and wetlands located on the Schendel property in the City of Corcoran. The evaluations were prepared for Peachtree Partners by Stantec Consulting (Stantec). The submitted documents included a March 4, 2014 letter providing a summary report of the conditions of the woodland/forest areas on the site and comparing the current conditions to the qualitative rank given to the site during a Natural Resources Inventory conducted in 2001. A wetland Functional Assessment Report which summarized a MnRAM analysis conducted on the site based on current conditions classified the wetlands according to the City’s classification system for wetlands. Woodland/Forest Analysis The woodland area on the Schendel property was identified during the 2001 Natural Resource Inventory as Site 28 “Maple-Basswood Forest”. This woodland community was assigned a Local Rank score of “High”, due to it’s location within the South Rush Creek Corridor, and a lower Ecological Status score of “B/C”, based on the nature of disturbance and the presence of exotic species (buckthorn). The letter summarizing current conditions documents that the site would more appropriately be classified as a young elm-ash-basswood forest. The letter also states that due to the lack of mature trees, the prevalence of invasive and nonnative shrubs, and the lack of native species in the ground cover, that the qualitative rank for the site would more appropriately be low to very low (CD to D). Of the two stands of forest evaluated on the site, the north stand was said to be of a higher quality with a better potential for restoration. The letter appears to accurately describe the current condition of the site based on photos contained in the document and makes a valid argument for the reclassification of the Ecological Status of the woodland/forest community. The vegetation community remains in a high priority area according to the 2001 Natural Resource Inventory and according to the Inventory would retain it’s local rank of “High” due to it’s location within the South Rush Creek Corridor. t:\2294-corcoran\24 - peachtree\feasibility study\stormwater feasibility study\app-c technical memo_functional assessment.docx Exhibit 5. Stormwater Feasibility Study Based on the results of this analysis, it appears that the woodland forest community in the northern portion of the property is in better condition and would be worth the effort of restoring or improving. The community to the east appears to be further degraded without high potential for successful restoration or improvement without significant effort. Wetland Analysis Stantec completed a functional assessment on 11 wetlands that were delineated on the subject property using MnRAM 3.4. The applicant prepared the MnRAM to classify the wetlands according to the City’s classification system. As required by the City Zoning Ordinance, the report provided the results from the analysis using the latest version of MnRAM. Section 1020.020 of the City Ordinance demonstrates that wetlands are to be ranked as high, medium, or low quality based on the functional level ranking of six selected categories from the MnRAM analysis: Floral Diversity/Integrity, Flood/Stormwater Attenuation, Water Quality Protection, Wildlife and/or Fishery Habitat, and Aesthetic/Recreation. Table 1 below illustrates the functional ranking in each of these categories and the appropriate City Classification according to the results of the MnRAM conducted by Stantec. Table 1-MnRAM Analysis Results Type (Eggers Wetland ID & Reed) A Wet meadow B Wet meadow MnRAM Vegetative Diversity/ Integrity Low Low Maint. of Char. of Wildlife Habitat Moderate Moderate Maint. Of Char. Fish Habitat NA NA Aesthetics/ Recreation/ Education/ Cultural Low Low City Classification Downstream System Flood/Stormwater/ Water (2014 Attenuation Quality MnRAM) Moderate High Medium Moderate High Medium C High High High Low Moderate High High Low Low High High NA NA Low Low Moderate Moderate High High High High Low Moderate Low Moderate High High NA NA NA Low Low Low Moderate Moderate Moderate Moderate High Moderate Medium High Medium Low Moderate NA Low Moderate Moderate Medium Low Moderate NA Low High High Medium Low Moderate NA Low Moderate High Medium D E F T1 F T2 G H Site 3 Site 4 Shallow marsh Seasonally flooded (basin) Wet meadow Seasonally flooded (flat) Wet meadow Wet meadow Seasonally flooded (floodplain) Seasonally flooded (basin) Seasonally flooded (flat) According to the MnRAM analysis, as documented in the report dated March 5, 2014, the wetlands on the site are all classified as Medium or High according to the City’s classification system. The majority of the wetlands were observed to have low quality vegetation communities, but the high and moderate scores in other categories led to the medium or high rankings by the City’s classification system. While all of the wetlands scored medium or high according to the City’s classification system, many of these basins had low quality vegetation communities, which indicates potential to improve these vegetation communities through restoration or management efforts. 2 T:\2294-Corcoran\24 - Peachtree\Feasibility Study\stormwater feasibility study\App-C Technical Memo_Functional Assessment.docx Exhibit 5. Stormwater Feasibility Study Appendix C Filtration BMP Details Exhibit 5. Stormwater Feasibility Study Exhibit 5. Stormwater Feasibility Study Exhibit 6. Utility Feasibility Study Wenck File #2294-24 July 2014 Utility Feasibility Study Peachtree Development Prepared for: THE CITY OF CORCORAN, MN 8200 County Road 116 Corcoran, MN 55340 Prepared by: WENCK ASSOCIATES, INC. 1800 Pioneer Creek Center P.O. Box 249 Maple Plain, Minnesota 55359-0249 (763) 479-4200 Table of Contents 1.0 INTRODUCTION ........................................................................................................1-1 2.0 SEWER......................................................................................................................2-1 2.1 2.2 2.3 3.0 WATER .....................................................................................................................3-1 3.1 3.2 3.3 3.4 4.0 Alignment And Lift Station .................................................................................. 2-1 Connections ........................................................................................................ 2-1 Force Main Alternatives And Costs ..................................................................... 2-1 Trunk System ...................................................................................................... 3-1 Looping And Connections ................................................................................... 3-1 Modeling ............................................................................................................. 3-1 Costs.................................................................................................................... 3-2 FINANCING AND NEXT STEPS ....................................................................................4-1 4.1 4.2 4.3 Background ......................................................................................................... 4-1 Methods .............................................................................................................. 4-1 Next Steps ........................................................................................................... 4-2 TABLES 1 Off-Site Costs for Sewer and Water FIGURES 1 Sewer Alignments and Force Main Route Alternatives 2 Water Looping and Connection Points APPENDICES Appendix A: Appendix B: Sewer and Water Trunk Systems from Comprehensive Plan Downtown Feasibility Study for Gravity Sewer (April 2012) T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx i July 2014 1.0 Introduction Peachtree Properties is proposing a development near the “10-50” intersection in Corcoran on property known as the Schendel property. Three feasibility studies are being completed for the project and they involve transportation, utilities and stormwater. This report looks specifically at the feasibility of providing trunk sewer and water service to the proposed development. Contained in the report is the sanitary sewer and water main options for the trunk system that is consistent with the overall City utility plans. Financing options of the development infrastructure will be further detailed as the project moves forward. For guidance, the City has recently followed the following financial procedures: • • • • • Off-site utility extensions may require developer cash contribution Off-site utility extension costs may be shared with City utility bond contributions The City manages permitting, easements, design and construction of off-site utilities Trunk Line Area Charges (TLAC) may still be required if cash for off-site facilities is provided Credit towards TLAC is given for oversizing and over depth costs of trunk utilities on site. Cost breakdown is given in Table 1. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 1-1 July 2014 2.0 2.1 Sewer ALIGNMENT AND LIFT STATION The City’s sewer trunk system also serves the Peachtree Development as conceptually shown on Figure 1. The alignment includes installation of a lift station on the north end of Peachtree’s development and force main to the existing manhole connection near the church at CR 116/CR 10 Intersection. The lift station will be located in the natural low point of the property in coordination with the development layout. The tributary area to the lift station is comprised of the proposed development as well as a future gravity sewer system to be installed in the downtown area south of County Road 10. Ultimate development will require the lift station to be taken “off line” and a new lift station constructed at City Hall to pump sewage to the north. This will be ultimately required to route sewage away from the Elm Creek Interceptor since it is currently oversubscribed according to MCES. 2.2 CONNECTIONS Sewer will be required to be “stubbed” to serve the south and southwest in accordance to the trunk system plans (Appendix A). These stubs will be located during the design phase of the project, however for the purposes of this report it can be assumed a southerly connection to serve the City Park and Downtown will be constructed under CR 10. The City would construct a separate project to connect Downtown and the City Park with the gravity system through Schendel. 2.3 FORCE MAIN ALTERNATIVES AND COSTS The development is important to the overall system, however for Peachtree to develop there appears to be only one discussion item discharge of sewer system —the route of the forcemain from the development to the Church manhole along CR 116. Costs are given in Table 1. Option A as shown on Figure 1 will take the forcemain from the lift station directly east to CR 116, south along CR 116 to the Church manhole. A complicating factor is the route requires easement to the east and easement to the south along CR 116. Cost for Option A--$475,000 Unit cost = $153/LF, similar to Lions Park project T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 2-1 July 2014 Option B will utilize the internal street network to bring the forcemain south, then east along sideyards to CR 116. This route shortens the off-site easement work necessary, and therefore appears less expensive for off-site costs. Cost for Option B--$315,000 Unit cost = $190/LF Unit cost increases from Option A due to smaller project, more sideyard easements, etc. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 2-2 July 2014 3.0 3.1 Water TRUNK SYSTEM The City’s water trunk system is nearby at the corner of CR 116 and CR 10. The ultimate system includes connections to the west and north along CR 116. A booster station is planned within the next few years (located at the Maple Grove border) to boost pressure within Corcoran. 3.2 LOOPING AND CONNECTIONS The development will be required to provide looping, which allows for water service to be maintained while under maintenance or repair. The looping required is at the north end of the development at CR 116, and at the south end where it will be connected to the City Park trunk line that also extends from the Downtown area. Figure 2 shows route along the west side of CR 116, which may or may not be shared with sewer force main. 3.3 MODELING Computer modeling was performed to estimate the water availability to the proposed development that included the existing 24” and 12” pipeline from the connection point to Maple Groves’ water distribution system near the intersection of CR10 and CR101. The purpose of this analysis was to estimate the water systems ability to provide adequate water and fire protection to the proposed subdivision. New pipe was added to the end of the existing pipe at CR 116 and continued north along CR 116 then continued west for a distance of approximately 1,100 lineal feet to a point inside the proposed development and would “dead end” (i.e. no looping of distribution piping was assumed to begin the development). Demands The water use demands were peak day demands and were estimated at 1,140 gallons per day (GPD) per house. The modeling assumes that the beginning water pressure at the intersection of CR10 and CR101 was approximately 50 psi and it was also assumed that the highest elevation within the new development to be served was 980 feet above sea level. Another assumption was that the Lennar development would consist of 300 homes during the modeling analyses. It is anticipated that the ultimate supply will be for 250 homes at full buildout. No other water use demands were placed on the distribution system. The model runs with WaterCAD were phased to review the water pressure as development progresses. The analyses included model runs to determine pressures at no new development, 50 new homes, 100 new homes, 150 new homes, 200 new homes and 250 homes; each with a 1,500 gpm fire flow demand and without the fire flow. The table below shows the resulting pressure at the end of the proposed pipe T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 3-1 July 2014 to represent the pressure available to the new development. This table shows the pressure available with and without the 1,500 gpm fire flow. Number of Homes 0 50 100 150 200 250 Pressure at Peak Day Demand (psi) 47.6 47.6 47.5 47.4 47.3 47.1 Pressure with 1,500 gpm Fire Flow (psi) 26 24.9 23.8 22.7 21.6 20.4 Conclusion The results of the model analyses indicate that the water system as described can provide adequate water and fire flow to the proposed development, which will improve as the City constructs a looped system further south to tie into Lennar’s west end. 3.4 COSTS Costs for the CR 116 northerly extension as shown on Figure 1 are given in Table 1. Cost for water main--$485,000 Unit cost = $155/LF, similar to Lions Park project T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 3-2 July 2014 4.0 4.1 Financing and Next Steps BACKGROUND The City has created area and connection charges for the development area, as documented in the “Regional Development Study, September 2013”. The study included costs of: • Water mains • Water booster station o This is a permanent structure to boost pressure for development and eventually to the Downtown water tower. • Water Towers • Sewer trunk lines, and • Sewer lift stations Transportation was included in the study also, however these costs are implemented on a sub district /impact basis as development occurs. The Peachtree impacts are for CR 10 and the CR 10/CR 50 intersection. 4.2 METHODS As noted in the introduction to this report, financing options of the development infrastructure will be further detailed as the project moves forward, however the developer needs to make a decision at some point on the viability of the project. Therefore for guidance, the City has recently followed these funding procedures: Offsite Utilities • Off-site utility extensions may require developer cash contribution o This would be an option for the CR 116 water main o This would be an option for the sewer force main leaving the Peachtree development • Off-site utility extension costs may be shared or covered by City utility bond contributions o The cost for water main along CR 116 could be included in the upcoming City project which will install a booster station at the Maple Grove border, and extend water main from the CR 10/CR 116 intersection to the west end of Lennar development. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 4-1 July 2014 Area and Connection Charges • Trunk Line Area Charges (TLAC) allow the City to recoup offsite trunk costs, and may still be required if cash for off-site facilities is provided • Credit towards TLAC is given for oversizing and over depth costs of trunk utilities on site. Property and Construction Management • The City is responsible for permitting, easements, design and construction of off-site utilities. 4.3 NEXT STEPS The project financials will be clarified as the applicant continues on the City process. The financial next steps for utilities are to: • Update the TLAC costs per buildable acre, since construction bids (actual costs) are available for portions of the SE Area trunk system. The intent of the City is to maintain a forward looking area charge (TLAC) system, and as portions of the system are built out, to update the analysis to represent the remaining system costs. This will include: • Insert project costs on Lions Park Sewer and CR 101 Water Main such as recent easement costs and actual bid costs Remove a portion of the system that will be installed by Lennar and insert the amount of TLAC credit applied to Lennar Review the “buildable acre” portion of the study to represent market conditions. Update the pipe unit costs (per linear foot). Re-execute the Multi-Year Financial Management Plan Report for review by Council and determine potential impacts to the City should market conditions change. The current version of the 5-Year Financial Plan includes $1.4M for a water booster station and water main connecting the CR 10/ CR 116 intersection with the west side of Lennar. This could be increased in scope to include the Peachtree water main along CR 116. T:\2294-Corcoran\24 - Peachtree\Feasibility Study\utility feasibility study\Utility Feasibility Study.docx 4-2 July 2014 Tables Off-Site Costs for Sewer and Water Table 1. Off-Site Costs for Sewer and Water Peachtree Development ITEM MOBILIZATION & DEMOBILIZATION TRAFFIC CONTROL CLEARING GRUBBING 12" WATERMAIN - DIRECTIONAL DRILL 6" DIP WATERMAIN HYDRANT & VALVE 12" - 45 DEGREE BEND 12" X 6" TEE EASEMENT ACQUISITION WATERMAIN COSTS UNITS LUMP LUMP ACRE LF LF EACH EACH EACH ACRE QTY 1 1 1.4 3100 80 4 2 4 1.4 UNIT PRICE $ 20,000.00 $ 7,500.00 $ 8,000.00 $ 70.00 $ 60.00 $ 5,000.00 $ 3,500.00 $ 2,000.00 $ 45,000.00 SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED VALUE FORCEMAIN SEWER COSTS - OPTION A ITEM UNITS QTY MOBILIZATION & DEMOBILIZATION LUMP 1 TRAFFIC CONTROL LUMP 1 CLEARING GRUBBING ACRE 0.7 8" FORCEMAIN - DIRECTIONAL DRILL LF 3100 4' DIA SANITARY SEWER MANHOLE EACH 1 6' DIA AIR RELEASE MANHOLE W/ VALVE EACH 2 CONNECT EXISTING SEWER PIPE TO STRUCTURE EACH 1 8" 45 DEGREE BEND EACH 2 EASEMENT ACQUISITION ACRE 0.7 UNIT PRICE $ 18,000.00 $ 7,500.00 $ 8,000.00 $ 80.00 $ 5,000.00 $ 15,000.00 $ 2,500.00 $ 1,500.00 $ 45,000.00 SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED VALUE FORCEMAIN SEWER COSTS - OPTION B ITEM UNITS QTY MOBILIZATION & DEMOBILIZATION LUMP 1 TRAFFIC CONTROL LUMP 1 CLEARING GRUBBING ACRE 1.0 8" FORCEMAIN - DIRECTIONAL DRILL LF 1650 4' DIA SANITARY SEWER MANHOLE EACH 1 6' DIA AIR RELEASE MANHOLE W/ VALVE EACH 1 CONNECT EXISTING SEWER PIPE TO STRUCTURE EACH 1 8" 45 DEGREE BEND EACH 2 EASEMENT ACQUISITION ACRE 1.0 UNIT PRICE $ 12,500.00 $ 7,500.00 $ 8,000.00 $ 80.00 $ 5,000.00 $ 15,000.00 $ 2,500.00 $ 1,500.00 $ 45,000.00 SUBTOTAL CONTINGENCY (20%) ENGINEERING (15%) EST. TOTAL ROUNDED VALUE Exhibit 6. Utility Feasibility Study TOTAL PRICE $ 20,000.00 $ 7,500.00 $ 11,200.00 $ 217,000.00 $ 4,800.00 $ 20,000.00 $ 7,000.00 $ 8,000.00 $ 63,000.00 $ 358,500.00 $ 71,700.00 $ 53,775.00 $ 483,975.00 $ 485,000.00 TOTAL PRICE $ 18,000.00 $ 7,500.00 $ 5,600.00 $ 248,000.00 $ 5,000.00 $ 30,000.00 $ 2,500.00 $ 3,000.00 $ 31,500.00 $ 351,100.00 $ 70,220.00 $ 52,665.00 $ 473,985.00 $ 475,000.00 TOTAL PRICE $ 12,500.00 $ 7,500.00 $ 8,000.00 $ 132,000.00 $ 5,000.00 $ 15,000.00 $ 2,500.00 $ 3,000.00 $ 45,000.00 $ 230,500.00 $ 46,100.00 $ 34,575.00 $ 311,175.00 $ 315,000.00 Figures Sewer Alignments and Force Main Route Alternatives Water Looping and Connection Points 958 94 6 958 960 ! 94 0 956 934 936 938 946 ! 946 ! 94 4 ! ! ! ! ! 954 970 97 8 974 ! ! 98 6 970 ! Sewer ! ! ! ! ! Contour Type ! 970 ! Index 974 972 Intermediate ! 98 0 Tax Parcels 4 96 974 96 97 0 96 GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, 2 Esri, DigitalGlobe, Source: and the GIS User Community 6 97 6 98 ! ! ! 982 Wenck 0 Exhibit 6. Utility Feasibility Study ! 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 ! Engineers - Scientists Business Professionals www.wenck.com ! Sewer Alignments Force Main Route Alternatives Proposed and Development ! CITY OF CORCORAN ! ! ! 960 982 97 4 ! 980 98 4 970 97 6 ! Water Connect to existing structure Commerce St ! 954 ! 954 ! 96 8 956 978 968 ! ! ! 962 968 964 960 964 960 954 964 96 6 960 976 974 956 ! 966 976 8 97 958 960 958 2 97 956 964 956 95 8 97 2 958 956 Red line shows potential water line in same area 962 958 ± 970 2 96 Feet 0 97 980 972 976 Path: L:\2294\0024\400\mxd\proposed_development.mxd Date: 7/11/2014 Time: 10:25:44 AM User: KacHD0606 962 6 96 350 50 972 968 96 0 974 946 948 0 96 950 175 962 6 95 7 6 5 4 974 6 95 954 (Source: ESRI) 2012 Aerial Photograph 4 950 ! 952 96 2 958 954 958 96 2 966 6 94 952 986 962 956 2 95 950 958 988 986 Legend 97 2 978 Downtown gravity 954 system extended to CR 50 988 966 95 4 95 0 956 2 98 8 97 966 976 970 966 0 96 984 968 960 980 4 96 95 8 950 958 8 95 952 8 95 Option B for sewer forcemain is within street 974 network and along a sideyard easement to 966 existing manhole adjacent to CR 116 960 950 6 95 ! 97 2 97 6 962 960 946 0 98 ! 6 95 948 ! 954 944 958 948 952 956 958 98 2 0 96 94 4 ! ! 964 ! 7 6 5 4 962 946 ! ! ! 940 942 ! © ¨ 116 960 95 0 962 954 94 946 2 ! 96 2 ran Tr 950 orco 964 95 8 10 0 96 6 95 EC 980 958 964 966 960 962 954 952 948 958 944 2 95 96 4 96 0 95 0 948 350 956 966 95 0 978 0 96 954 8 95 6 9 2 0 96 Gravity Sewer through development is shown as 21-inch in Comp Sewer Plan. Alignment to coincide with street network and wiil be modified during design phase. 946 946 94 4 972 976 950 2 94 968 970 4 97 4 95 948 948 6 94 2 94 964 956 958 950 946 4 94 96 0 95 2 952 948 942 944 Red line shows potential water line in same area 960 4 94 956 W Corcoran Tr 94 6 ! 96 0 958 962 954 95 8 96 2 0 96 96 2 4 95 6 95 960 948 95 6 0 94 8 95 962 950 958 940 94 6 95 6 948 ! 2 94 95 2 956 ! 954 938 956 958 ! 950 8 94 942 950 952 946 ! 0 94 938 944 946 944 95 6 ! 944 950 954 Provide gravity stub to west / southwest to 958 service areas in accordance with Comprehensive 95 6 Sewer Plan (See Appendiix A) 944 958 956 ! 95 0 Option A for sewer forcemain to existing manhole is along CR 116 6 94 ! 938 934 ! 94 0 952 ! ! ! ! ! ! ! ! ! 958 ! 950 ! 954 2 95 4 95 956 ! 95 0 948 958 960 ! 93 6 938 93 8 944 ! 938 8 94 ! 942 2 94 ! 2 95 ! 946 Figure 1 958 94 6 958 960 ! 94 0 956 934 936 938 946 ! 946 ! 94 4 Yellow line shows potential sewer force main in same area ! 942 ! ! ! ! ! 964 ! ! 954 ! 95 8 ! © ¨ ! 7 6 5 4 970 97 8 980 984 ! 974 966 ! 98 6 970 ! ! ! Sewer ! ! ! Contour Type ! 970 ! Index 974 972 Intermediate ! 98 0 Tax Parcels 4 96 974 96 97 0 96 GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, 2 Esri, DigitalGlobe, Source: and the GIS User Community 6 97 6 98 ! ! 982 Wenck 0 Exhibit 6. Utility Feasibility Study ! 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 JULY 2014 ! Engineers - Scientists Business Professionals www.wenck.com ! Water Looping andDevelopment Connection Points Proposed ! CITY OF CORCORAN ! ! ! ! 956 960 982 97 4 ! 980 ! Water Connect to existing water main Commerce St ! 954 ! 96 8 ! 954 ! 98 4 970 97 6 960 954 964 978 968 976 974 96 6 960 ! ! ! 962 964 960 964 968 96 2 958 954 958 96 2 956 ! 966 976 8 97 960 2 97 96 4 986 97 2 958 956 958 956 95 8 958 964 958 ± 2 96 Feet 0 97 980 972 976 Path: L:\2294\0024\400\mxd\proposed_development.mxd Date: 7/11/2014 Time: 10:25:44 AM User: KacHD0606 962 970 Yellow line shows potential sewer line in same area 962 956 350 50 972 968 0 96 0 974 7 6 5 4 6 96 175 96 946 948 350 962 6 95 950 954 (Source: ESRI) 2012 Aerial Photograph 4 950 976 952 966 958 974 6 95 954 968 966 6 94 956 988 986 Legend 97 2 978 Water main extended 954 through park 988 966 95 4 95 0 2 95 970 966 962 956 950 2 95 948 4 96 0 96 0 96 960 958 95 8 950 8 95 8 95 952 960 950 6 95 2 98 8 97 974 952 ! 97 2 97 6 962 960 946 0 98 ! 6 95 948 ! 954 944 958 948 952 956 958 98 2 958 944 0 96 94 4 ! ! 962 960 95 0 964 116 10 0 96 6 95 95 0 8 95 6 9 2 ! 940 962 954 94 946 2 96 0 948 946 ran Tr 950 95 0 978 980 orco 966 2 94 942 944 0 96 950 958 EC 948 946 964 966 960 962 954 952 972 976 946 94 4 968 970 4 97 4 95 948 948 6 94 2 94 964 956 958 950 960 needs to be "looped" with future Water Downtown Project. This provides two sources and allows for maintenance or repair. 4 94 4 94 96 0 95 2 952 94 6 956 956 W Corcoran Tr 958 962 946 96 2 96 0 954 95 8 96 2 0 96 96 2 4 95 6 95 960 948 95 6 0 94 8 95 962 950 958 940 94 6 95 6 948 ! 2 94 95 2 956 ! 954 938 956 958 ! 950 950 952 946 ! 0 94 94 4 938 944 946 8 94 942 95 6 958 950 954 944 95 6 944 958 956 ! 95 0 Water Looped to CR 116, and future connection to north. 6 94 ! 960 938 934 ! ! ! ! ! ! ! ! ! ! 958 ! ! ! 950 ! 954 2 95 4 95 956 ! 95 0 948 ! 93 6 938 93 8 944 938 94 0 Provide water connection to west / southwest 952 958 8 94 ! 942 2 94 ! 2 95 ! 946 Figure Figure 21 Appendix A Sewer and Water Trunk Systems NE-V 2030 Comprehensive Plan SE-AF SE-AP Trunk Sanitary Sewer SE-AQ 18" SE Area Figure 26 SE-AS SE-AR SE-32 10" SE-AO 12" SE-14 21 " SE-B SE-A " SE-13 SE-11 24 21" 8" SE-I SE-D SE-H SE-F 8" SE-10 8" SE-8 18" SE-9 SE-E Forcemain SE-M SE-12 Sewer Subdistricts 8" 18 " SE-5 SE-N SE-Q 12" SE-T 8" SE-4 SE-18 12" SE-R SE-S 15" SE-2 SE-U Parcel Base Map SE-J 18" " 15 SE-3 18" SE-19 21" SE-P City Limit SE-20 SE-16 6" 10 " MCES Interceptor SE-15 SE-L Trunk Invert SE-O 936.9 Gravity Sewer SE-K SE-7 SE-AM Sewer Node SE-C SE-G SE-6 SE-A Lift station invert SE-AT SE-A 926.7 SE-31 SE-17 SE-21 SE-V Fugure Connection To Elm Crreek Interceptor SE-1 SE-X SE-Y SE-Z 0 2000 21" SE-W 15" SE-AK " 24 SE-22 SE-AB SE-AC SE-23 12" Feet 12" SE-AV SE-24 15" SE-26 SE-AA SE-28 SE-29 10" 8" 8" 10 " SE-30 SE-AU SE-AG SE-AH SE-AI SE-25 SE-AJ SE-AE SE-27 SE-AD 18" SW-11 " 12 April 2009 i:\504\50408143\gis\se sanitary map.mxd Exhibit 6. Utility Feasibility Study TOWNSHIP OF HASSAN kD r Country Rd 97th Ave N 95th Ave Patrick Pl Meister Ct Cain Rd Schutte Rd Trail Haven Rd GOOSE LAKE SH CR EE le S 70th Ave N t COOK LAKE 66th A Future Well Exploration Areas 2030 Service Boundary Peachtree Water Main Looping Shown on Comp Water Plan Gleason Rd ve N Hunter Rd October 7, 2009 63rd Ave N L rth a CITY OF MEDINA Elm St wo Mohawk Dr tter r Bu dD State Hwy 55 a County Rd 116 Willow Dr Rolling Hills Rd il L Tra Trail La B en Wagon Wheel La Rd sho e Horseshoe Tr MORIN LAKE Olde Sturbridge Rd s er ttl Se se Future Trunk Watermain Abilene La d Ol Ho r Lakeview Cir Potential Supply Connections with Neighboring Communities County Hwy 101 Buckskin Tr Bluebonnet Dr a er tL Ju b Bel Homestead Tr Nystrom La LAKE Potential Water Tower Locations 81st Pl Maple Hill Rd Commerce St W Corcoran Tr ag le E Kalk Rd Winchester Tr Auger Ave Larkin Rd JUBERT 3,000 Feet Wetlands 81st P l K 75th Ave N SCOTT LAKE 0 City Limit Rd County Hwy 50 1,500 Open Water RU E Corcoran Tr County Hwy 19 Meister Rd Cain Pl Rid ge Rd Exhibit 6. Utility Feasibility Study CITY OF MAPLE GROVE Foxline Dr CITY OF GREENFIELD Schutte Farm Rd 3,000 Shannon La St re hl er ee rT r Brandywine Rd Mystique Dr Larson Rd Pi on 2030 Comprehensive Plan Fa Hill La Sunny Draft Trunk Water System Hunters Ridge d Duffney Dr Fox Valley Dr Chis holm Lily Pon d La Tr fL Tamiami Tr Bl uf Hi gh Bechtold Rd l vd Garden La Sundance Rd 101st Ave Osw a l Garrison Rd Julie Ann Dr d Hillside Dr r m Rd a r a D 93rd Ave N Strehler Rd gR City of Hidden Ponds Dr le High Ridg land e Rd ak da Ebert Rd Heather La L fery Jef kB County Hwy 10 Rebecca Park Tr Sti e Darrel La O CORCORAN Country Cir E Dassel La Rush Cr e e Salem La Figure 28 Stieg Rd Tessmer Rd Woodland Tr Robert La Rush Meadow La Rush C Oakdale Dr Meadowview Dr Jackie La et L a r ee Sun s Hage Dr Meadow Creek Dr 109th Ave N Brockton Pl Windmill Dr Maple La Ginseng La Jonquil La COUNTY ROAD 117 I:/504/50408144/GIS/ComPlan/Maps/trunk water system.mxd Hackamore Rd (62ND AVE N) Appendix B Downtown Feasibility Study for Gravity Sewer (April 2012) Wenck Associates, Inc. 1800 Pioneer Creek Ctr. P.O. Box 249 Maple Plain, MN 55359-0249 (763) 479-4200 Fax (763) 479-4242 E-mail: [email protected] TO: Dan Donahue, City Administrator FROM: Kent Torve, P.E. and Heather Libby, P.E. DATE: April 5, 2012 SUBJECT: Feasibility Report for Downtown Gravity Sewer, Water and Street Reconstruction The Council has authorized a Feasibility Report to review the cost associated with gravity sewer and water service to the Downtown area. This analysis was an outcome of a business owner meeting, where costs of service were presented for a system of low pressure sewer and water. The business owners were looking for a comparison cost for gravity sewer, which eliminates each building’s tanks and pumps. These utilities would be installed beneath the street which is typical of an “urban” utility service. This memo serves as the report for this authorization. A separate analysis of creating a special services district to fund the project as compared to the 429 process is being prepared by Northland Financial Services. Trunk Services The sewer would provide service to 48 parcels (44 hookups) via an 8-inch gravity pipe. The pipes drain to the north and west, and terminate at a lift station located near the City ball fields north of CR 50. This location is consistent with the Master Sewer Plan, and is feasible from a topography standpoint. From the lift station the sewer would be pumped via forcemain to the connection point along CR 116 near St. Thomas Church. The alignment is shown in Figure 1. Water service would be provided to the same parcels. A 12-inch watermain is proposed as being installed in the existing street with a minimum of 10-foot separation distance as required from the sewer. The 12-inch watermain would be extended (or “stubbed”) east of the intersection of CR116 and 75th Ave. N for future development, and west to provide for future connections for undeveloped areas. The alignment is shown in Figure 1. Street Restoration Installation of sewer and water would require a complete reconstruction of the street. The existing street is 24-feet wide with two foot gravel shoulders. We have estimated the cost for street reconstruction two ways, a) reconstruct the street to its existing condition and b) reconstruct to 32-feet width with curb and gutter and storm sewer. Properties The parcel count has been expanded to 48, and the boundary includes Commerce, Auger, 75th Ave. N, and some properties along CR116, CR10 and CR50. Figure 2 shows the proposed service area. \\francis\vol1\2294-Corcoran\10-Sewer and Water Planning (TIF Districts)\Feasibility Study Apr 2012\memo feasibility downtown.docx Exhibit 6. Utility Feasibility Study Cost Table 1 details the individual costs associated with water, sewer and street reconstruction work. It can be noted the costs include significant contingency due to the property issues, possible stormwater work, and coordination involved with servicing 48 parcels and disconnecting septic tanks, etc. Summary of Costs Sewer $584,000 Water $552,000 Street Reconstruction • 24-ft Rural Street $464,000 Indirect Costs (Engineering, Legal, Appraisals, Easements) $365,000 Total Project at 24 ft street $1,965,000 Alternative A • 32-ft Urban Street (curb & gutter) $792,000 Total Project at 32 ft street $2,293,000 Conclusion The project is feasible from an engineering perspective and necessary should residents and council wish to install gravity sewer to the downtown area. The project involves logistical challenges of connecting individual properties along with significant legal and property efforts to obtain access. \\francis\vol1\2294-Corcoran\10-Sewer and Water Planning (TIF Districts)\Feasibility Study Apr 2012\memo feasibility downtown.docx Exhibit 6. Utility Feasibility Study Table 1. Downtown Gravity Sewer, Water and Street Reconstruction Costs City of Corcoran Gravity Sewer (in street) From Downtown to Lift Station Item No. 1 2 3 4 5 6 7 8 Description 8" Gravity Sewer and Manholes Sewer Forcemain (4"-diameter) Lift Station Jacked Steel Casing (CR 10 & CR 50) Jacking/Boring Mobilization Valves and Connection Stub Misc. traffic control, testing, etc. County Road 10 & 50 Construction Complexity Unit Quantity Lineal Feet Lineal Feet Lump Sum Lineal Feet Lump Sum Each Lump Sum Lump Sum 5,220 1,970 1 200 1 44 1 1 Unit Cost $ $ $ $ $ $ $ $ 40 25 75,000 150 30,000 2,000 20,000 30,000 Amount $ $ $ $ $ $ $ $ 209,000 49,000 75,000 30,000 30,000 88,000 20,000 30,000 Total Sewer Construction: $ Contingency (10%) $ Total $ 531,000 53,000 584,000 Water Main from CR 116 to Downtown Item No. 1 2. 3. 4. 5. 6. 7. Description 12-inch Main Open Cut with restoration Jacked Steel Casing (CR 10 & CR 50) Valves and hydrants Misc. traffic control, testing, etc. County Road 10 & 50 Construction Complexity Curb Stops Restoration Unit Quantity Lineal Feet Lineal Feet Estimate Lump Sum Lump Sum Each Lump Sum 7,025 200 10 1 1 44 1 Unit Cost $ $ $ $ $ $ $ 40 300 4,000 20,000 30,000 1,500 5,000 Amount $ $ $ $ $ $ $ 281,000 60,000 40,000 20,000 30,000 66,000 5,000 Total Construction: $ Contingency (10%) $ Total $ 502,000 50,000 552,000 Total Sewer and Water Trunk Lines $ 1,136,000 \\francis\vol1\2294-Corcoran\10-Sewer and Water Planning (TIF Districts)\Feasibility Study Apr 2012\Downtown Mini FS Cost Table-gravity Exhibit 6. Utility Feasibility Study Street Reconstruction (24-foot street with gravel shoulders) Item No. 1 2 3 4 5 6 7 8 Description Removal of existing pavement Wear Course (1.5") Base Course (2") Class 5 Aggregate (12") Select Granular (12") Class 5 Aggregate for 2' shoulders Geotextile Restoration Unit Quantity Square Yards Ton Ton Cubic Yards Cubic Yards Cubic Yards Square Yards Lump Sum 9,700 800 1,100 3,200 300 3,200 9,700 1 Unit Cost $ $ $ $ $ $ $ $ 10 65 61 25 23 25 2 20,000 Amount $ $ $ $ $ $ $ $ 97,000 52,000 67,000 80,000 7,000 80,000 19,000 20,000 Total Street Construction: $ Contingency (10%) $ Total $ 422,000 42,000 464,000 Street Reconstruction (32-foot street with curb and gutter) Item No. 1 2 3 4 5 6 7 8 9 10 Description Removal of existing pavement Wear Course (1.5") Base Course (2") Class 5 Aggregate (12") Select Granular (12") Geotextile Curb & Gutter Storm Sewer Pond Construction and Stormwater Improvements Restoration Unit Quantity Square Yards Ton Ton Cubic Yards Cubic Yards Square Yards Lineal Foot Lineal Foot Lump Sum Lump Sum 9,700 1,100 1,400 4,300 4,300 12,900 7,200 3,600 1 1 Unit Cost $ $ $ $ $ $ $ $ $ $ 10 65 61 25 23 2 9 25 75,000 3,000 Amount $ $ $ $ $ $ $ $ $ $ 97,000 72,000 85,000 108,000 99,000 26,000 65,000 90,000 75,000 3,000 Total Street Construction: $ Contingency (10%) $ Total $ 720,000 72,000 792,000 Indirect Costs Item No. 1 2 3 4 Description Easements Legal and Appraisal Engineering and Surveying Utilities, Landowner Coordination, misc. Unit Quantity Acre Estimate Estimate Estimate 1.54 1 1 1 Unit Cost $ 10,000 $ 60,000 $ 250,000 $ 40,000 Subtotal \\francis\vol1\2294-Corcoran\10-Sewer and Water Planning (TIF Districts)\Feasibility Study Apr 2012\Downtown Mini FS Cost Table-gravity Exhibit 6. Utility Feasibility Study Amount $ $ $ $ $ 15,000 60,000 250,000 40,000 365,000 Legend Tax Parcels Lift Station 3'' Foremain 1 38 8'' Gravity Sewer " ) 2 12'' Water Main 0 25 23 22 21 5 4 40 10 24 3 39 31 20 8 9 41 6 19 27 26 42 11 12 7 18 45 28 16 29 17 17 46 30 15 14 43 13 44 48 36 Future Connection 32 34 33 47 Would Require Pumping up to Gravity Line 37 35 Aerial Photograph (Source: Bing Maps) 250 125 0 250 Feet Path: L:\2294\10\mxd\SE Alt\mxd\Water and Sewer Options_CenterRdNW.mxd Date: 4/5/2012 Time: 1:11:09 PM User: ShuJC0243 ± Map ID PIN Bldg # Street Ow ner Map ID PIN Bldg # Street Ow ner 0 053-2311923430004 20115 CO RD NO 10 10-50 PROPERTIES LLC 25 053-2611923120005 20209 CO RD NO 50 EDNA G LLC 1 053-2311923440015 20020 CO RD NO 10 ST THOMAS THE APOSTLE CHURCH 26 053-2611923120012 20110 AUGER AVE K & R LEWIS PROPERTIES LLP 2 053-2311923440018 20000 CO RD NO 10 CH OF ST THOMAS OF CORCORAN 27 053-2611923120013 20120 AUGER AVE K & R LEWIS PROPERTIES LLP 3 053-2611923110006 52 ADDRESS UNASSIGNED S W TREPTAU & M T TREPTAU 28 053-2611923120014 20125 AUGER AVE PRO DEVELOPMENT PROP LLC 4 053-2611923110008 20045 CO RD NO 10 SCOTT W TREPTAU 29 053-2611923120015 20115 AUGER AVE GRANMOR LLC 5 053-2611923110009 20101 CO RD NO 50 S W TREPTAU & M T TREPTAU 30 053-2611923120016 52 ADDRESS UNASSIGNED COMMERCE STREET PARTNERS LLP 6 053-2611923110013 7625 CO RD NO 116 J H RYAN & D RYAN 31 053-2611923120017 20175 CO RD NO 50 FORSBERG PROPERTIES LLC 7 053-2611923110016 7559 CO RD NO 116 CORCORAN CORNER LLC 32 053-2611923140014 20095 75TH AVE N WW CONSTRUCTORS INC 8 053-2611923110019 7631 COMMERCE ST L M & S N OARE TRUSTEES 33 053-2611923140018 19950 75TH AVE N LOREN & DORIS LEUER 9 053-2611923110022 19905 CO RD NO 10 A & P KRAL 34 053-2611923140024 20010 75TH AVE N LEE W SUNRAM 10 053-2611923110025 52 ADDRESS UNASSIGNED ST THOMAS CHURCH 35 053-2611923140026 20050 75TH AVE N T L & L E HILDE 11 053-2611923110030 7670 COMMERCE ST TMR PROPERTIES LLC 36 053-2611923130012 20160 75TH AVE N G & M PROPERTIES INC 12 053-2611923110031 7604 COMMERCE ST RS HOLDINGS LLC 37 053-2611923130013 20150 75TH AVE N JOMICO INC 13 053-2611923110035 19945 75TH AVE N D W LADDUSAW & S M LADDUSAW 38 053-2311923430003 20121 CO RD NO 10 JOSEPH ANDRES 14 053-2611923110036 20015 75TH AVE N D G & C J FACKLER 39 053-2611923110005 20045 CO RD NO 10 WILLIAM G TREPTAU 15 053-2611923110037 20055 75TH AVE N DAVID B ANDERSON 40 053-2611923110007 20037 CO RD NO 10 F A WALDRON & D E BENSON 16 053-2611923110038 7550 COMMERCE ST FAIRWAY LLC 41 053-2611923110020 7591 COMMERCE ST T E GLEASON & K M GLEASON 17 053-2611923110041 7555 CO RD NO 116 DAVID A REMER ET AL 42 053-2611923110029 7590 COMMERCE ST PHILIP J KERBER 18 053-2611923110045 52 ADDRESS UNASSIGNED CORCORAN CORNER LLC 43 053-2611923110039 19925 75TH AVE N L G LEUER & D A LEUER 19 053-2611923110046 7610 COMMERCE ST M E INDUSTRIES LLC 44 053-2611923110040 19905 75TH AVE N L G B INC 20 053-2611923110048 19925 CO RD NO 10 JEFFREY L JOHNSON 45 053-2611923110043 7575 COMMERCE ST DANNY L & EILEEN E PETRIE 21 053-2611923120001 20113 CO RD NO 50 S W TREPTAU & M T TREPTAU 46 053-2611923110049 52 ADDRESS UNASSIGNED COMMERCE STREET PARTNERS LLP 22 053-2611923120002 20123 CO RD NO 50 KATHLEEN ROEHL 47 053-2611923140019 19910 75TH AVE N G & M PROPERTIES INC 23 053-2611923120003 20137 CO RD NO 50 HEIDI ANN SHAWD 48 053-2611923140025 7525 COMMERCE ST MANITOU GROUP LLC 24 053-2611923120004 20201 CO RD NO 50 ADAM DAVID LLC CITY OF CORCORAN Downtown Water and Sewer Trunk Lines Exhibit 6. Utility Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 APR 2012 Figure 1 Legend Tax Parcels Lift Station 3'' Foremain 1 38 8'' Gravity Sewer " ) 2 12'' Water Main 0 25 23 22 21 5 4 40 10 24 3 39 31 20 8 9 41 6 19 27 26 42 11 12 7 18 45 28 16 29 17 17 46 30 15 14 43 13 44 48 36 Future Connection 32 34 33 47 Would Require Pumping up to Gravity Line 37 35 Aerial Photograph (Source: Bing Maps) 250 125 0 250 Feet Path: L:\2294\10\mxd\SE Alt\mxd\Water and Sewer Options_CenterRdNW.mxd Date: 4/5/2012 Time: 1:11:09 PM User: ShuJC0243 ± Map ID PIN Bldg # Street Ow ner Map ID PIN Bldg # Street Ow ner 0 053-2311923430004 20115 CO RD NO 10 10-50 PROPERTIES LLC 25 053-2611923120005 20209 CO RD NO 50 EDNA G LLC 1 053-2311923440015 20020 CO RD NO 10 ST THOMAS THE APOSTLE CHURCH 26 053-2611923120012 20110 AUGER AVE K & R LEWIS PROPERTIES LLP 2 053-2311923440018 20000 CO RD NO 10 CH OF ST THOMAS OF CORCORAN 27 053-2611923120013 20120 AUGER AVE K & R LEWIS PROPERTIES LLP 3 053-2611923110006 52 ADDRESS UNASSIGNED S W TREPTAU & M T TREPTAU 28 053-2611923120014 20125 AUGER AVE PRO DEVELOPMENT PROP LLC 4 053-2611923110008 20045 CO RD NO 10 SCOTT W TREPTAU 29 053-2611923120015 20115 AUGER AVE GRANMOR LLC 5 053-2611923110009 20101 CO RD NO 50 S W TREPTAU & M T TREPTAU 30 053-2611923120016 52 ADDRESS UNASSIGNED COMMERCE STREET PARTNERS LLP 6 053-2611923110013 7625 CO RD NO 116 J H RYAN & D RYAN 31 053-2611923120017 20175 CO RD NO 50 FORSBERG PROPERTIES LLC 7 053-2611923110016 7559 CO RD NO 116 CORCORAN CORNER LLC 32 053-2611923140014 20095 75TH AVE N WW CONSTRUCTORS INC 8 053-2611923110019 7631 COMMERCE ST L M & S N OARE TRUSTEES 33 053-2611923140018 19950 75TH AVE N LOREN & DORIS LEUER 9 053-2611923110022 19905 CO RD NO 10 A & P KRAL 34 053-2611923140024 20010 75TH AVE N LEE W SUNRAM 10 053-2611923110025 52 ADDRESS UNASSIGNED ST THOMAS CHURCH 35 053-2611923140026 20050 75TH AVE N T L & L E HILDE 11 053-2611923110030 7670 COMMERCE ST TMR PROPERTIES LLC 36 053-2611923130012 20160 75TH AVE N G & M PROPERTIES INC 12 053-2611923110031 7604 COMMERCE ST RS HOLDINGS LLC 37 053-2611923130013 20150 75TH AVE N JOMICO INC 13 053-2611923110035 19945 75TH AVE N D W LADDUSAW & S M LADDUSAW 38 053-2311923430003 20121 CO RD NO 10 JOSEPH ANDRES 14 053-2611923110036 20015 75TH AVE N D G & C J FACKLER 39 053-2611923110005 20045 CO RD NO 10 WILLIAM G TREPTAU 15 053-2611923110037 20055 75TH AVE N DAVID B ANDERSON 40 053-2611923110007 20037 CO RD NO 10 F A WALDRON & D E BENSON 16 053-2611923110038 7550 COMMERCE ST FAIRWAY LLC 41 053-2611923110020 7591 COMMERCE ST T E GLEASON & K M GLEASON 17 053-2611923110041 7555 CO RD NO 116 DAVID A REMER ET AL 42 053-2611923110029 7590 COMMERCE ST PHILIP J KERBER 18 053-2611923110045 52 ADDRESS UNASSIGNED CORCORAN CORNER LLC 43 053-2611923110039 19925 75TH AVE N L G LEUER & D A LEUER 19 053-2611923110046 7610 COMMERCE ST M E INDUSTRIES LLC 44 053-2611923110040 19905 75TH AVE N L G B INC 20 053-2611923110048 19925 CO RD NO 10 JEFFREY L JOHNSON 45 053-2611923110043 7575 COMMERCE ST DANNY L & EILEEN E PETRIE 21 053-2611923120001 20113 CO RD NO 50 S W TREPTAU & M T TREPTAU 46 053-2611923110049 52 ADDRESS UNASSIGNED COMMERCE STREET PARTNERS LLP 22 053-2611923120002 20123 CO RD NO 50 KATHLEEN ROEHL 47 053-2611923140019 19910 75TH AVE N G & M PROPERTIES INC 48 053-2611923140025 7525 COMMERCE ST MANITOU GROUP LLC 23 053-2611923120003 20137 CO RD NO 50 HEIDI ANN SHAWD 24 053-2611923120004 20201 CO RD NO 50 ADAM DAVID LLC CITY OF CORCORAN Downtown TrunkArea Lines Proposed TrunkWater Sewerand and Sewer Water Service Exhibit 6. Utility Feasibility Study Engineers - Scientists Business Professionals www.wenck.com Wenck 1800 Pioneer Creek Center Maple Plain, MN 55359-0429 1-800-472-2232 APR 2012 Figure Figure 21
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