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1997-05-27 EAW Worksheet - -' " ,.. Environmental AssessmenfWorksheet (EAW) NOTE TO PREPARERS This worksheet is to be completed by the ResPonsible Governmental Unit (RGU) or its agents. The project proposer must supply any reasonably accessible data necessary for the worksheet, but is not to complete the final worksheet itself. If a complete answer does not fit in the space allotted, attach additional sheets as necessary. For assistance with this worksheet contact the Minnesota Environmental Quality Board (EQB) at (612) 296-8253 or (toll-free) 1-800-652-9747 (ask operator for the EQB environmental review program) or consult "F.A.W Guidelines," a booklet available from the EQB. NOTE TO REVIEWERS Comments must be submitted to the RGU (see item 3) during the 3O-day comment period following notice of the EA W in the EQB Monitor. (Contact the RGU or the EQB to learn when the comment period ends.) Comments should address the accuracy and completeness of the information, potential impacts that may warrant further investigation, and the need for an EIS. If the EA W has been prepared for the seoping of an EIS (see item 4), comments should address the accuracy and completeness of the information and suggest issues for investigation in the EIS. Center Oaks - ,T' i' . 1. Project TItle 2. Proposer Contact person Address Pilot Land Development Donald Jensen 13736 Johnson St. NE Ham Lake, MN 55304 612-757-4052 3. RGU Ci ty of Albertville Contact person Garrison Hale andOOe City Administrator Address 5975 Main AvenueNE Albertville, MN 55301 612-497-3384 Phone Phone 4. Reason for EAW Preparation o EIS seoping X.:Imandatory EA W 0 citizen petition 0 RGU discretion 0 Proposer volunteered IfEAW EIS'. . E B ru1 her() 4410 .4300 Susp 19 or IS mandatory glVe Q e category num s 5. Project location N E 2 120 24 1/4 1/4 Section Township , Range County Wright CitylTwp Albertville Attach copies of each of the following to the EA W: a. a county map showing the general location of the project; b. copyCies) of USGS 7.5 minute, 1:24,000 scale map (photocopy is Ol<) indicating the project boundaries; C. a site plan showing all significant project and natural features. d. land use plan e.wetland mitigation.ylan 6. DescrIptlOli Give a complete description of the proposed project and ancillary facilities (attach additional sheets as necessary). :Emphasize construction and operation methods and features that will cause physical manipulation of the environment or produce wastes. Indicate the timing and duration of construction activities. See Attached Provide a 50 or fewer word abstract for use in EQB Monitor notice: 1 . 7. Proj~t Magnltu~8 Data Total Project ~ (acres) 63.2 Number of Residential Units Unattached 108 acres or Length (miles) AttaChed ~l Commercial / Industrial / Institutional Building Area (gross floor space) Total square feet; Indicate area of specific uses: Office Manufacturing Retail Other Industrial Warehouse Institutional Light Industrial Agricultural Other Commercial (specify) Building HeightCs) 8. Permits and Approval$ Required List all known local, state, and federal permits, approvals, and funding required: Unit of Government Type of Application Status Wright Soil & Water Distrlct Wetland Mltlgatlon ~e~ml~ ~o be a~yuired Dept. Natural Resources Wetland Mitigation Permit To be acquired Ar~y Corp. of Engineers Wetland Mitigation Permit To be acquired MN Pollution Control Agency Gen. Storm Water DiSCharge Permit To be acquired MN Pollution Control Agency Sanitary Sewer Extension Permit To be a~quired Joint Powers Water Board Watermain Extension To be acquired MN Dept. of Health Watermain Extension To be acquired City of Albertville Final Plat To be acquired Wright County Final Plat To be acquired City of Albertville Stre~t & Utility Improve. Proj. To be acquired 9. Land Use Describe current and recent past land use and'development on the site and on adjacent lands. Discuss the compatibility of the project with adjacent and nearby land uses; indicate whether any potential conflicts involve enviromnental matters. Identify any potential environmental hazard due to past land uses, such as soil contamination or abandoned storage tanks. See Attached 10. Cover Types Estimate the acreage of the site with each of the following cover types before and after development (before and after totals should be equal): . Types 2 to 8 Wetlands ~e:T ~ Urban/Suburban Lawn ~efote Aff: 8 Wood,ed/Forest 1.2 1.2 Landscaping Brush/Grassland 15 . 2 2 . 8 Impervious Surface 0 5 . 0 Cropland 42 : b 0 Other (describe) Ponds U .L . 0 11. FIsh, Wildlife, and Ecologically Sensitive Resources a. Describe fish and. wildlife resources on or near the site and discuss how they would be affected by the project. Describe any ~ures to be taken to minimize or avoid adverse impacts. See Attached b. Are there any state-listed endangered, threatened, or spedal-concern species; rare plant communities; colonial waterbird nesting colonies; native prairie or other rare habitat; or other sensitive ecological resources on or near the site? 0 Yes UNo If yes, describe the resource and how it would be affected by the project. Indicate if a site survey of the resources was conducted. Describe measures to be taken to minimize or avoid adverse impacts. See Attached 2 ~~ 12. Fhyslcallmpac~on Water R880urcea Will the project involve the physical or hydrologic alteration. (dredging, filling, stn>am diversion, outfall structure, diking, impoundment) of any surface water Qa.ke, pond, wetland, strean1; drainage ditch)? ~Yes 0 No . if yes, identify the water resource.to be affected and describe: the alteration, including the construction process; volumes of dredged or fill material; area affected; length of stream diversion; water surface area affected; timing and extent of fluctuations in water surface elevations; spoils disposal sites; and proposed mitigation measures to minimize impact~. See Attached 13. Water Use a. Will the project involve the installation or abandonment of any wells? ex: Yes 0 No For abandoned wells give the location and Unique well number. For new wells, or other previously unpermitted wells, give the location and purpose of the well and the Unique well number (if known). See Attached b. Will the project require an appropriation of ground or surface water (including dewatering)? 0 Yes ~ No If yes, indicate the source, quantity, duration, purpose of the appropriation, and DNR water appropriation permit number of any existing appropriation. Discuss the impact of the appropriation on ground water levels. See Attached C. Will the project require connection to a public water,wpply? UYes 0 No If yes, identify the supply, the DNR water appropriation permit number of the supply, and the quantity to be used. See Attached 14. Water.related Land Usa Management Districts Does any part of the project site involve a shoreland zoning district, a delineated lOO-year flood plain, or a state or federally designated wild or scenic river land use district? 0 Yes I!; No If yes, identify the district and discuss the compatibility of the project with the land use restrictions of the district. 15. Water SUrface Use Will the project change the number or type of watercraft on any water body? 0 Yes ~ No If yes, indicate the current and projected watercraft usage and discuss any potential overcrowding or conflicts with other users or fish and wildlife resources. 16. SoIt. Approximate depth fm feet) to: Ground water: minimum 0 average 10-15 Bedrock: minimum N/A average N/A Desaibe the soils on the site, giving SCS classifications, if known. (SCS interpretations and soil boring logs need !!Q! be attached.) Dundas and Ames Silt Loams Hayden-Loams 17. erosion and Sedimentation Give the acreage to be graded or excavated and the cubic yards of soil to be moved: acres 56.5 ; cubic yards 170, 9UO Describe any steep slopes or highly erodible soils and identify them on the site map. Describe the erosion and sedimentation measures to be used during.and after construction of the project. See Attached 3 19. Water Ouallty.'. Surface Water Runoff a. Compare the quantity and quality of site runoff before and after the project. Describe methods to be used to managea.I\41or.. treat runoff. See Attached b. Identify the route{s) and receiving water bodies for runoff from the site. Estimate the impact of the runoff on the quality of the receiving waters. (If the ruM!! may affect a lszk consult "EA W Guidelines" about whether a nutrient budget analysis is needed.) See Attached 19. Water Quality. Wastewaters. a. Describe sources, quantities, and composition (except for normal domestic sewage) of all sanitary and industrial wastewaters produced or treated at the site. See Attached b. Describe any waste treatment methods to be used and give estimates of composition after treatment, or if the project involves on-site sewage systems, discuss the suitability of the site conditions for such systems. Identify receiving waters \mcluding ground water) and estimate the impact of the discharge on the quality of the receiving waters. (If the disc1uuge may affect a lake consult "EA W Guidelines" about whdhc a nutrient {nIdgd analysis. is neede!l.) See Attached C. If wastes will be discharged into a sewer system or pretreatment system, identify the system and discuss the ability of the system to accept the volume and composition of the wastes. Identify any improvements which will be necessary. See Attached 20. Ground Water - Potential for Contamination a. Approximate depth (in feet) to ground water: IIUIUIIlum; average. b. Descn"be any of the following site hazards to ground water and also identify them on the site map: sinkholes; shallow limestone formations/karst conditions; soils with high infiltration rates; abandoned or unused wells. Describe measures to avoid or minimize environmental problems due to any of these ~s. See Attached C. Identify any tbxic or hazardous materials to be used or present on the project site and identify measures to be used to prevent them from contaminating ground water. See Attached 21. Solid Wastesj Hazardous Wastes; Storage Tanks a. Describe the types, amounts, and compositions of solid or hazardous wastes to be generated, including animal manures, sludges and ashes. Identify the method and location of disposal. For projects generating municipal solid waste indicate if there will be a source separation plan; list type(s) and how the project will be modified to allow recycling. See Attached b. Indicate the number, location, size, and use of any above or below ground tanks to be used for storage of petroleum products or other materials (except water). See Attached 4 (residential development) 22. Traffic Parking spaces added None-Existing spaces (if project involves expansion) 0 Estimated total Average Daily Traffic (Arm generated. . 1210 Estimated maximum peak hour traffic generated (if knoWn) and its tinting: . For each affected road indicate the ADT and the directional distribution of traffic with and without the project. . Provide an estimate of the impact on traffic congestion on the affected roads and describe any traffic improvements which will be necessary. The ADT estimate was achieved by assuming 10 trips per household per day 108 lots x 10 trips + 12% = 1209.6 use 1210 23. Vehicle-related aIr emissions Provide anestlmate of the effect of the project's traffic generation on air quality, including carbon monoxide levels. Discuss the effect of traffic improvements or other mitigation measures on air quality impacts. (If the project involves 500 or more parking spaces, consult "EA W Guidelines" about whether a. detailed air quality analysis is needed.) See attached 24. Stationary source air emissIons Will the project involve any stationary sources of air emissions (such as boilers or exhaust stacks)? 0 Yes UNo If yes, describe the sources, quantities, and composition of the emissions; the proposed air pollution control devices; the quantities and composition of the emissions after treatment; and the effects on air quality. 25. Will the project generate dust, odors, or noise during construction and/or operation? ~ Yes 0 No If yes, describe the, sources, characteristics, duration, and quantities or intensity, and any proposed measures to mitigate adverse impacts. Also identify the locations of sensitive receptors in the vicinity and estimate the impacts on these receptors. See attached 26. Are any of the following resources on or in proximity to the site: 8. archeological, historical, or architectural resources? 0 Yes lj No b. prime or unique farmlands? 0 Yes rn No c. designated -parks, recreation areas, or trails? Kl Yes 0 No d. seenic views and vistas? 0 Yes XX No e. other unique resources? 0 Yes UNo If any items are answered Yes, describe the resource and identify any impacts on the resource due to the project. Describe any measures to be taken to minimize or avoid adverse impacts. c. The development immediately to the north, Parkside Third Addition, has a designated neighborhood park. The Center Oaks Development will expand the park by land dedication. No impact to the park is anticipated. 27. Will the project create adverse visual impacts? (Examples include: glare from intense lights; lights Tlisible in wilderness areas; and la.rge 'Oisible plumes from cooling towers or exhaust stacks.) 0 Yes UNo If yes, explain. 28. Compatibility with plans Is the project subject to an adopted lcx:a1 comprehensive land use plan or any other applicable land use, water, or resource management plan of an local, regional, state, orkderal agency? XXYes 0 No If yes, identify the applicable planes), discuss the compatibility of the project with the provisions of the planes), and explain how any conflicts between the project and the planes) will be resolved. If no, explain. The project is in conformance with the City Comprehensive Use Plan, dated June 17, 1996. The land use designated for this property is low density residential. There is no conflict between the proposed project and the City Comprehensive Plan. See attached Map D for the City Land Use Plan. 5 ,.' . 29. Impact on Infrutructure and Public Services Will new or expanded utilities, roads, other infrastructure, or public services be reqtllred to'serve the project?lX Yes - 0 No .. . If yes, describe the new or additionalinfrastrui:ture /services needed; (Any infrastructure that is a "connected action" with respect to the project must be assessed in this EA Wi sa "EA W Guidelines" for ddails.) See Attached 30. Related Developments; CUmulative Impacts a. Are future stages of this development planned or likely? 0 Yes 0 No ,Unknown If yes, briefly describe future stages, their timing, and plans for environmental review. b. Is this project a subsequent stage of an earlier project? 0 Yes IXI No If yes, briefly describe the past development, its timing, and any past environmental review. c. Is other development anticipated on adjacent lands or outlots? ID Yes 0 No If yes, briefly describe the development and its relationship to the present project. d. If a,b, or c were marked Yes, discuss any cumulative environmental impacts resulting from this project and the other development. See Attached 31. Other Potential environmental Impacts If the project :r;nay ~use any adverse environmental impacts which were not addressed by items 1 to 28, identify and discuss them here, along with any proposed mitigation. Impacts have been addressed 32. SUMMARY OF ISSUES (This secticm need not be completed if the EA W is being dcne for EIS scaping; instemi, add.ress remnt issues in the draft 5coping Decision document which must accompany the EA W.) List any impacts and issues identified above that may require further investigation before the project is commenced. Discuss any alternatives or mitigative measures that have been or may be considered for these impacts and issues, including those that have been or may be ordered as permit conditions. Further investigation of issues identified above before the project is commenced is not deemed necessary. CERTIFICATIONS BY THE RGU (all 3 certifications must ~e signed for EOB acceptance of the EA W for publication of notice in the fOB Monitor) A. I.hereby certify ~ information conta,in~)t(~ document is accurate and complete to the best of my knowledge. Signature ~~ ~ ~/.1t.. ~ - , B. I hereby certify that the project described in this EA W is the complete project and there are no other projects, project stages, or project components, other than those described in this document, which are related to the project as "connected actions" or "phased actions~~ed, resP.$!ivei~~~. Rules, pts. 4410.0200, subp. 9b and subp. 60. Signature_~~ ~ _~ ' . C. I .hereby ~ copies of th. e completed .&<~are being sent to all points on the official EQB EA W distribution list. Slgnature~ --=< ~_? Title of signer C f TY -4:/1 II:! I ~ / ~ V7f ./'CJ~ Date J7) L Y' I 8j If? 7 6 Minncsou Environmental Quality Boud. R~.=j lcr-e ! 990. 6. DESCRIPTION This Project consists of developing residential property on a 63.2 acre parcel of property in the City of Albertville, Minnesota (the "Project"). The planned residential development consists of 108 single family lots. The design of the development strives to achieve a lot size of 15,000 square feet. A total of 103 lots are over 15,000 square feet, slots are less than 15,000 square feet, and the average lot size is 16,739 square feet for the development. The remainder of property consists of parks, wetlands and outlots. The City of Albertville is included in the Joint Powers Water Board System along with the cities of Hanover and St. Michael. Domestic water and fire protection service will be provided to the Project by the Joint Powers Board Water System. In 1993, Albertville upgraded its municipal wastewater treatment facility, and the wastewater from the Project will be treated at the upgraded facility through an extension of Albertville's sanitary sewer collection system. The sanitary sewer main line installed through the Project will be designed to accommo~ate the wastewater flow from adjacent properties that are expected to be developed in the futUre and for which sanitary sewer service will be required. It is estimated that approximately 300 acres to the south and west of the Project will ultimately be serviced with sanitary sewer from the main lines within the Project. The timing, extent, and type of residential development of the land area to the south and west of the Project is not known. However, the utilities within the project will be designed so that subsequent extensions to the south and west can be accomplished. Construction activities for developing the Project include typical earthwork operations as necessary for grading of streets, installation of piping for extension of the municipal water and sanitary sewer systems, and minor earthwork operations for the development. MPCA approved erosion control methods such as silt fencing will be used to mitigate potential erosion ont? adjacent properties or into drainage ways or wetlands. The timing and duration of the construction is not established. The proposer desires to commence development of the area as expeditiously as possible. The rate of development of the Project is dependent upon timing of approvals as well as the rate at which housing is needed. 9. LAND USE The majority of the existing land use is agricultur~, with portions of the property existing as wetlands. The estimated acreage of cover types before and after development are identified in the following section. Adjacent land uses include residential and agricultural. The City Approved Land Use Plan is attached as Map D. The proposed development is adjacent to a recently constructed residential development within the city of Albertville, Parkside Third Additio~. The project is compatible with adjacent and nearby land uses which consists of recent residential expansions of the city of Albertville. Because adjacent land uses are consistent with the prope>sed Project, no environmentally negative impacts are anticipated. The majority of the 300 acres to the south and west of the Project are also primarily agricultural with portions of the property existing as wetlands. Future residential development of the acreage to the south of the Project is compatible with adjacent and nearby land uses because it abuts the northerly boimdary of the City of St. Michael which currently consists of agriculture and residential developments. Also, the Albertville-St. Michael High School is located east of the future residential development south of the Project. Thus, existing land uses are compatible with the Project and surrounding areas. The rate of future development is unknown. Preliminary plans for residential development of a 40 acre parcel adjacent to the east has been submitted by others and approved by the City. Outlots B and C have been sold to another developer. Preliminary plans have been submitted to the City proposing a multi- family development. Outlot A is proposed to be developed in association with the property adjacent to the west. Conceptual discussions have been initiated on the property by others for development of a golf course. The schedule for development is unknown at this time. Preliminary pl~s have not been submitted for adjacent parcels to the south and west. There are no known past land uses that would contribute to present environmental concerns in the Project. 11. FISH, WILDLIFE, AND ECOLOGICALLY SENSITIVE RESOURCES Attached is the letter sent to the Department of Natural Resources requesting its review of the Project regarding ecologically sensitive resources. The DNR response, when received, will be provided as a supplement to this EA W. An EA W was prepared in 1995 for the residential development abutting the north boundary of the Project, Parkside Third Addition. Attached is the DNR review of ecologically sensitive resources provided for the Parkside Third AdditionEA W. No known occurrences of rare species or natural features were found within a one mile radius of the Parkside Third Project. Therefore, no conflicts are anticipated for this Project, as the total boundary of the project is within the one mile radius. There are no fish resources on or near the site that could be affected by the Project. The existing land area of the Project will be developed to include only those areas that are currently used for agricultural purposeS: . The wetland areas, with the exception of approximately 3,180 square feet, will not'be disturbed by the Project. In excess of 61,000 square feet in "wetland replacement" will be created by the Project. This area, with the exception of the amount required for mitigation for this Project, will be used for mitigation in future projects, if any. Minnesota Department of Natural Resources 500 Lafayette Road 51. Paul, Minnesota 55155-40_ May 27, 1997 Scott Dahlke Professional Engineer Meyer-Roblin, Inc. 1111 Hwy. 25 N. Buffalo, MN 55313 Re: Center Oaks Plat Residential Development, T120N, R24W, Section 2, WrightCounty Dear Mr. Dahlke: The Minnesota Natural Heritage database has been reviewed to determine if any rare plant or animal species or other significant natural features are known to occur within an approximate one-mile radius of the above referenced project. Based on this review, there are no known occurrences of rare species or natural features in the area searched. The Natural Heritage database is maintained by the Natural Heritage Program and the Nongame Wildlife Program, units within the Section of Ecological Services, Department of Natural Resources. It is the most complete source of data on Minnesota's rare, endangered, or otherwise significant plant and animal species, plant communities, and other natural features, and is used in fostering better understanding and protection of these rare features. The information in the database is drawn from many parts of Minnesota, and is constantly being updated, but it is not based on a comprehensive survey of the state. Therefore, there are currently many significant natural features present in the state which are not represented by the database. We are in the process of addressing this via the Minnesota County Biological Survey (MCBS), a county-by-county inventory of rare natural features, which is now underway. Because survey work is in progress for Wright County, our information about natural communities judged to be significant by our program is quite good for that county. The MCBS survey work for rare and endangered animals and plants is less comprehensive; it is therefore possible that occurrences of these features exist in the project area for which we have no records. Because there has not been an on-site survey of the biological resources of the project area, it is possible that ecologically significant features exist for which we have no record. DNR Information: 612-296-6157,1-800-766-6000 . TrY: 612-296-5484,1-800-657-3929 An Equal Opportunity Employer Who Values Diversity ft Printed on Recycled Paper Containing a 4t.., Minimum of 10% Post-Consumer Waste .' Thank you for consulting 1.1S on this matter, and for your interest in minimizing impacts on Minnesota's rare resources. Please be aware that review by the Natural Heritage and Nongame Research Program focuses only on rare natural features.. It does not constitute review or approval by the Department of Natural Resources as a whole. An invoice for the work completed is enclosed. You are being billed for map and computer search and staff scientist review. Sincerely, ~8.~ Ellen B. Heneghan Endangered Species Environmental Review Coordinator Natural Heritage and Nongame Research Program 612/296-8279, FAX 612/296-1811 es #970694 12. PHYSICAL IMPACTS ON WATER RESOURCES Physical or hydrologic alteration of surface waters outside the Project area will not occur. Development of the residential area within the Project will be consistent with the existing wetlands and wetland regulations. A 3,180 square foot area of the Type IT wetland is proposed to be filled with approximately 250 c.y. of material native to the Project. Minor relocation of portions of two existing drainage ways within the Project area will be performed to conform with overall platting and stormwater and water quality controls. Wetland replacement is proposed on the Project site which is in accordance with current.wetland mitigation laws. See attached Map E for the Wetland Mitigation Plan. Stormwater detention/water quality ponds will be constructed that will control stormwater outflow rates and that will be designed in accordance with applicable stormwater quality criteria. The location and size of these facilities and the overall stormwater control for the Project will be discussed in the Water Quality-Surface Water Runoff section to the Environmental Assessment Worksheet. 13. WATER USE a. The abandonment of an existing well for the single farmstead located on the property is expected. Upon available information and belief, this well does not have a unique well number. This well will be abandoned and sealed in accordance with Minnesota Department of Health Requirements. See Map "C" for a location of the existing farmstead. b. Appropriation of ground or surface waters is not anticipated during construction. The sole exception to the absence of ground water appropriation is i.f minimal dewatering of perched water is required for installation of the sanitary sewer collection system. The determination of whether any dewatering is even needed, or to the extent it may be needed, is dependent on whether water bearing seams are encountered during installation of the utilities. Dewatering during construction, if any, should not affect groundwater conditions, but will only affect perched water during the period of construction. c. The Project will receive water for domestic ~d fire protection purposes from the Joint Powers Board System for AlbertYille:;St. Michael and Hanover. The DNR Water Appropriate Permit Number for the supply is 146359 ~d 455787. Estimated daily water consumption for the Project upon its completion is approximately 27,000 gallons per day assuming typical rates (lOOgcd) for water consumption. 17. EROSION AND SEDIMENTATION Gradingof streets and lots within the Project will-be performed. See Map "C" for contours. Grading outSide of street right-of-ways will be performed as necessary, in order to develop lots and building pad elevations consistent with drainage design criteria.. The developer's intent is to perform as little grading as possible for the Project and to perform only that grading which is necessary for home construction and drainage purposes. Erosion control by the use of silt fences will be used to preclude erosion into downstream water ways or wetland areas. The Project does not contain steep slopes that will. require additional erosion control measures. All erosion control during construction will be performed in accordance with the City and MPCA's requirements that include th~.measures identified above. Detention/water quality ponds will be in place during and after construction that will serve as detention ponds for stormwater purposes as well as sedimentation basins for stormwater runoff prior to stotmwater entering the existing wetlands and County Ditch No. 9. The sedimentation basins and stormwater runoff will be further discussed in the following section. 18. WATER QUALITY - SURFACE WATER RUNOFF a & b The quantity of runoff from the developed Project will not increase the rate of discharge to downstream water courses nor will the quality of stormwater be adversely affected. This estimate is based on standard runoff parameters. for the soil.cover conditions that presently exist on the property, and the soil cover conditions and impervious areas that are expected to exist at the time the Project is fully completed. The quality of stormwater runoff is expected to improve during and after construction due to the installation of detention/water quality ponds. The stormwater from the Project will ultimately discharge into CoUnty Ditch No.9 (see Map "C") that is located on the west edge of the Project and flows to the south and empties into the Crow River. Prior to stormwater entering County Ditch No.9, the majority of stormwater from the Project will enter one of three detention/water quality ponds prior to being discharged at controlled rates to County Ditch No.9. None of the stormwater from the Project is discharged into lakes or protected streams of high water quality. ,:' . The rate of stormwater discharge to County Ditch No.9 will be controlled by the three detention/water quality ponds that will store runoff during storm events and then release stormwater at controlled rates. Thus, the rate of flow of stormwater to County Ditch No.9 will not be increased as a result of the Project. Stormwater from the Project enters the detention/water quality ponds through storm sewer piping and overland flow. See Map "C" for the sedimentation pond locations and storm sewer piping. Regarding stormwater quality, the Project will not degrade stormwater quality when compared to existing conditions. At the present time, a substantial percentage of the existing area is utilized for crops and agricultural purposes. As such, runoff from the existing agricultural property contains typical nutrients such as phosphorous and nitrogen that exists in fertilizers' and agricultural waste. Runoff from the existing property also contains silt from erosion of crop land. Runoff from the completed Project may contain some nutrients from lawn fertilizers and contain some soil that may wash off streets into the storm sewer system. The detention/water quality ponds in the Project will, however, provide a mechanism for sedimentation of soils and other foreign materials prior to the storm water flowing into County Ditch No.9. Thus, settleable solids should be reduced by construction of the Project. Therefore, the long term quality of stormwater runoff to County Ditch No.9 is expected to be improved. 19. WATER QUALITY - WASTEWATERS a. The residential area of the Project will generate approximately 27,000 gallons of domestic wastewater per day based on an average of 2.7 persons per residential living unit and a flow rate of 100 gallons per capita per day. The wastewater generated by the Project will not include any industrial contributions. The developable land to the south and west is expected to generate similar residential flows once developed. b. & c. Albertville upgraded and expanded its wastewater treatment facility in 1993. All necessary hearings were conducted and permits and approvals obtained from the MPCA for the upgrade and expansion of the Albertville wastewater treatment system. The wastewater treatment facility as it currently exists consists of a pond system that provides secondary treatment prior to tertiary treatment to remove phosphorous before discharge to Mud Lake. The organic treatment capability of the facility can be expanded by incorporation of air, if needed, into the pond treatment system. The existing wastewater treatment facility, is designed to treat 315,000 gallons per day with a CBOD loading of 368 pounds per day. The wastewater treatment facility averages .approximately 184,000 gallons per day (gpd), using available flow data, over a 12 month time period (April 1996 - April1997). Higher than average flows occur during May and June averaging 200,000 gpd. Therefore, excess capacity of approximately 115,000 gpd currently exist throughout the year without any modification to the existing wastewater treatment facility. Thus, at the present time, the Albertville wastewater treatment facility has the capability to accept and treat all wastewater from the Project. The wastewater treatment facility is designed in such a manner that it can easily be modified to treat significantly higher flows and organic loadings. It is estimated that the wastewater treatment facility can be increased to treat an average daily flow of 1,373,000 gallons per day with a CBOD loading of 2,380 pounds per day with modifications to meet higher standards. These designs are on fIle with the MPCA for the original treatment facility permit. Thus, Albertville's wastewater treatment facility has the capability to be easily modified for future wastewater flows and loadings from areas outside the Project. 20. GROUNDWATER-POTENTIAL FOR CONTIMINA TION b. The potential for groundwater contamination is not a concern. The property to be developed does not contain any known special geologic/land form features that would be of a special concern regarding potential groundwater contamination. Further, the development is residential and will be totally serviced by Albertville's municipal wastewater collection system. As existing domestic well on the Project will be abandoned and sealed in accordance with applicable requirements of the Minnesota Department of Health. c. Because the Project is residential, no toxic or hazardous materials will be generated from the Project. 21. SOLID WASTE: HAZARDOUS WASTE: STORAGE TANKS a.Because the Project is a residential development) no hazardous wastes will be generated from the Project. Municipal waste will be generated from the Project and this waste willbe collected and either disposed of or recycled in accordance with thecoritracts that the City of Albertville hasfor garbage pick-up and recycling. Construction ofthe Project will generate waste that is typical of residential home construction. Solid waste from these construction activities will be ~sposed of in accordance with applicable requirements. The exact location of disposal of construction materials is not known. b. No permanent above or below ground tanks used for the storage of petroleum products or other materials (except water) are expected to exist after construction of the Project. During construction of the Project) it is expected that mobile fuel tanks will be on the property for the purpose of providing ~el for construction equipment. '<o:ft,' 23. VEHICLE-RELATED AIR EMISSIONS Based on the traffic data obtained from Question No. 22, and the fact that there is no reason to expect traffic congestion due to' the Project, the Project will not cause any significant decrease in air quality due to vehicle related air emissions. 25. DUST: ODORS: NOISE During construction of the Project, dust may be generated as a result of grading, utility installation and street construction. The significance of any dust will be minimal and can be mitigated by the use of water trucks, if needed, during construction of the streets. Once the streets are paved, dust should not be a factor. The City requires that the streets be paved prior to occupancy. Therefore, dust generation should not be an issue after street paving is complete. Further, park acreage, open areas, and County Highway No. 19 are directly adjacent to the project that provide buffer areas during construction., Strong or potential odors will not exist during construction or after project completion. Noise generation will be typical of that for grading, utility installation, street construction, and home building. Major noise sources such as blasting will not occur. Especially sensitive receptors such as hospitals, . etc., are not located in the vicinity of the Project. ,: . 29. IMPACT ON INFRASTRUCTURE AND PUBLIC SERVICES As stated in prior sections, sanitary sewer and water utilities will be extended to serve the Project. The sanitary sewer servicing the Project will be designed to accommodate acreage in Albertville that is located south and west of the Project. Both the water supply system and the wastewater treatment system have available capacity to accommodate the Project. 30. RELATED DEVELOPMENT: CUMULATIVE IMPACTS a. It is anticipated that the area to the south and west of the Project that is located in Albertville (approximately 300 acres), will someday be developed for residential use. The timing of this potential development and how it may be staged is not known. The potential for development of this area is being considered at this time so that utility extensions into the Project can be designed to accommodate future development to the south and west. b. This Project is not a subsequent phase of an earlier project. c. Development of adjacent land may occur. Outlots B and C have been sold to another developer. The properties are zoned to be residential developments. Preliminary plans have been submitted by others to the City proposing a multi-family development. Outlot A is proposed to be incorporated into the proposed Cedar Creek Golf Course adjacent to the west. The proposed golf course, to be developed by others, has initiated conceptual discussions with the City. The Outlot A area is anticipated to be part of a golf fairway, green, and tee off. The schedule for developme,nt of the golf course is unknown at this time. d. Future development of other areas will be required to meet all City standards in place at the time of development. Because the remaining area to the south and west in Albertville is relatively small, cumulative environmental impact of this Project and.all future stages to the south and west, even if full residential development occurs, is negligible. The existing utilities have the capacity to accommodate future development, and a major county highway runs adjacent to the property which may provide access. Future development in Albertville to the south of the Project will simply abut against the northerly city limits of St. Michael which currently consists of. residential development. WRIGHT COUNTY MINNESOTA ~~ ~ ,r;.(,,'i- '~~-(6 >- I- z :) o u 't~..... co 'tl't _ ~ COKATQ.$=t 4 ~ 1't..;r:g rot 0:: -, e QM ~ ~' mOCKHOLM tl .. L':O ::I ~':'26 -"'-::; ft.2IW. MC LEOD USW. CARVER II ft.211W. , COUNTY i IImUND ATLAS COMPANY, INC. MILBANK, SOUTH DAKOTA @ccp.ri3>t. 1990 Il,. _ AtJ.as '-'1. lD:. Map A ST. MICHAEL QUADRANGLE . 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