Worthington Industrial Park Sanitary Sewer Extension EAW · 2012-10-04 · Worthington Industrial Park Sanitary Sewer Extension Environmental Assessment Worthington, Minnesota 3 Worksheet

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ENVIRONMENTAL ASSESSMENT WORKSHEET

Note to reviewers: The Environmental Assessment Worksheet (EAW) provides information about a project that may have the potential for significant environmental effects. This EAW was prepared by the Minnesota Pollution Control Agency (MPCA), acting as the Responsible Governmental Unit (RGU), to determine whether an Environmental Impact Statement (EIS) should be prepared. The project proposer supplied reasonably accessible data for, but did not complete the final worksheet. Comments on the EAW must be submitted to the MPCA during the 30-day comment period which begins with notice of the availability of the EAW in the Minnesota Environmental Quality Board (EQB) EQB Monitor. Comments on the EAW should address the accuracy and completeness of information, potential impacts that are reasonably expected to occur that warrant further investigation, and the need for an EIS. A copy of the EAW may be obtained from the MPCA by calling 651-757-2101. An electronic version of the completed EAW is available at the MPCA website at http://www.pca.state.mn.us/news/eaw/index.html#open-eaw. 1. Project Title: Worthington Industrial Park Sanitary Sewer Extension 2. Proposer: City of Worthington 3. RGU: Minnesota Pollution Control Agency Contact Person Dwayne Haffield Contact Person Charles Peterson and Title City Engineer and Title Planner Principal Address P.O. Box 279 Address 520 Lafayette Road North Worthington, MN 56187 St. Paul, Minnesota 55155-4194 Phone 507-372-8640 Phone 651-757-2856 Fax 507-372-8643 Fax 651-297-2343 E-mail [email protected] E-mail [email protected] 4. Reason for EAW Preparation:

EIS Scoping

Mandatory EAW

X

CitizenPetition

RGUDiscretion

Proposer Volunteered

If EAW or EIS is mandatory give EQB rule

category subpart number and name: Minn. R. 4410.4300, subp. 18 A – Expansion of a municipal sewage collection system

5. Project Location: County Nobles City/Twp Worthington 1/4 Section Township Range NE 14 T102N R40W NW 13 T102N R40W GPS Coordinates: N 43°38’32.758”N W 95°35’42.125”W Tax Parcel Number 31-3849-000

http://www.pca.state.mn.us/news/eaw/index.html#open-eaw

Worthington Industrial Park Sanitary Sewer Extension Environmental Assessment Worthington, Minnesota 2 Worksheet

Figures and Appendices attached to the EAW: Figure 1 – Regional Location Map Figure 2 – U.S. Geological Survey Topo Quad Figure 3 – Aerial Photography Figure 4 – City of Worthington Land Use Figure 5 – Land Cover Figure 6 – Water Resources Map Figure 7 – Soils Map Figure 8 – Hydrologic Soil Groups Map Figure 9 – Hydric Soils Map Figure 10 – Prime or Unique Farmland or Lands within an Agricultural Preserve Map Figure 11 – Sanitary Sewer Master Plan Area Appendix 1 – Correspondence with Minnesota Department of Natural Resources (DNR) Appendix 2 – 2012 Designed Waste Load Allocations Worthington Wastewater Treatment Facility Appendix 3 – 2030 Designed Waste Load Allocations Worthington Wastewater Treatment Facility Appendix 4 – Correspondence with Minnesota State Historic Preservation Office

6. Description:

a. Provide a project summary of 50 words or less to be published in the EQB Monitor. This project consists of extending an existing 24-inch diameter sanitary sewer in the city of Worthington (or City), located in BioScience Drive, from the east side of Trunk Highway (TH) 59 to serve the future industrial park development on the west side of the highway. The sanitary sewer is proposed to extend approximately 1,000 feet west of TH 59.

b. Give a complete description of the proposed project and related new construction. Attach additional sheets as necessary. Emphasize construction, operation methods and features that will cause physical manipulation of the environment or will produce wastes. Include modifications to existing equipment or industrial processes and significant demolition, removal or remodeling of existing structures. Indicate the timing and duration of construction activities. The sanitary sewer extension will serve a future industrial park. The future industrial park development includes approximately 130 acres of near-future development with an ultimate estimated development service area of approximately 705 acres. The project also includes construction of turn lanes for BioScience Drive along TH 59, watermain extension, rerouting CD 12, a new box culvert under TH 59 and stormwater/flood mitigation ponds. Construction is anticipated in the summer of 2012. The sanitary sewer extension alone will take about three weeks. The majority of the sanitary sewer pipe will be installed by open trench methods. The portion under TH 59 will either be by open trench or bore and jack, depending on the overall traffic detour of the project with respect to the installation of the new box culvert and removal of the old box culvert. The sequence of construction will follow standard practices for conventional land modification for utility projects. The current plans call for this work to be done under a single contract. The sequence of certain of these items will be up to the contractor. Relocation of the ditch, grading (ponds), sewer and water installation and installation of culvert all tend to be a prerequisite to the actual construction of the turn lanes; however, culvert and sewer and water installation would not be completed until the highway work is about to commence (road closure). Many of the activities may be occurring simultaneously. The project will be completed with the establishment of a permanent vegetative cover.


c. 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 city of Worthington will be carrying out this project. The City has planned for an industrial park in this area in the future. The industrial park will need sanitary sewer connections. Industries that locate in the new industrial park will benefit from the project. In addition, the additional business that these industries bring to the community will benefit the community members by providing jobs and additional money in the local economy.

d. 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. The sanitary sewer extension will serve a future industrial park. The future industrial park development includes approximately 130 acres of near-future development with an ultimate estimated development service area of approximately 705 acres. The project also includes construction of turn lanes for BioScience Drive along TH 59, watermain extension, rerouting County Ditch 12 (CD 12) (Okabena Creek), a new box culvert under TH 59 and stormwater/flood mitigation ponds. The sanitary sewer construction will be bid as one project and constructed concurrently with the other items. CD 12 will be relocated to a point that it is ready to go once the new box culvert is installed. This is when the utility work will start, so the county ditch will be relocated first.

e. 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. The project is the orderly extension of sewer service within the city of Worthington.

7. Project Magnitude Data Total Project Area 2.29 acres or Length (miles) 1,000 feet

Number of Residential Units:

Unattached

N/A

Attached

N/A

Maximum Units Per Building:

N/A

Commercial/Industrial/Institutional Building Area (gross floor space): total square feet

N/A

Indicate area of specific uses (in square feet):

Office N/A Manufacturing N/A Retail N/A Other Industrial N/A Warehouse N/A Institutional N/A Light Industrial N/A Agricultural N/A Other Commercial (specify) N/A Building height N/A If over 2 stories, compare to heights of nearby buildings N/A


8. Permits and approvals required. List all known local, state and federal permits, approvals 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 Minn. R. 4410.3100.

Unit of Government Type of Application Status City of Worthington Street and Utility Plan Approval To be applied for

MPCA Sanitary Sewer Extension Permit To be applied for

MPCA Stormwater Construction Activity National Pollutant Discharge Elimination System (NPDES)

To be applied for

Minnesota Department of Transportation (Mn/DOT)

Plan Approval To be applied for

Mn/DOT Utility Permit on Trunk Highway Right of Way

To be applied for

Minnesota Department of Health Watermain Plan Approval To be applied for

DNR/Army Corps of Engineers Public Waters/Wetlands Permit To be applied for

9. Land use. Describe current and recent past land use and development on the site and on adjacent

lands. Discuss project compatibility with adjacent and nearby land uses. Indicate whether any potential conflicts involve environmental matters. Identify any potential environmental hazards due to past site uses, such as soil contamination or abandoned storage tanks, or proximity to nearby hazardous liquid or gas pipelines. Currently the land use in the sanitary sewer extension project boundary consists of TH 59, grass, a county ditch, and agricultural field. Worthington’s Land Use Plan (2004) indicates the project area to be Highway Commercial. Interstate Highway 90 is south of the project, and south of the highway is Highway Commercial. The area to the north and west is Commercial/Industrial Reserve. To the east of the property, on the other side of TH 59, the area is Business Park.

10. Cover Types. Estimate the acreage of the site with each of the following cover types before and after development:

Before After Before After Types 1-8 wetlands Lawn/landscaping Wooded/forest Impervious Surfaces 0.17 0.17 Brush/grassland 0.43 0.43 Stormwater pond Cropland 1.66 1.66 Other (describe) 0.03 0.03 TOTAL 2.29 2.29


11. Fish, Wildlife, and Ecologically Sensitive Resources. a. Identify fish and wildlife resources and habitats on or near the site and describe how they would

be affected by the project. Describe any measures to be taken to minimize or avoid impacts. Wildlife in this part of Nobles County includes deer, coyote, turkey, raccoon, rabbit, squirrel, pheasant, skunk, woodchuck, groundhog, gopher, and other birds common in the area. The proposed project may displace the wildlife population that uses the open areas for protection, food, and cover. If wildlife is present, it may relocate to other nearby habitat in the area until construction is over. Some species may return after construction and some others may be permanently displaced.

The increased development and spread of diseases such as Dutch elm disease and oak wilt have impacted trees and woodlands within the city of Worthington. Trees infected with Dutch elm disease or oak wilt must be removed promptly so they do not infect healthy trees. In order to prevent the spread of tree diseases, the contractor will be encouraged to avoid carrying out construction operations in the wooded areas during the peak infection period (April – June), and to treat oak wilt prior to breaking ground.

Wildlife often uses vegetated areas for habitat or food. Vegetation management in infrequently mowed areas – such as ditches, along utility access roads, and under power lines – should be done mechanically (chemicals should not be used). Vegetation management should occur fall through spring (after October 1 and before June 1).

b. Are any state (endangered or threatened) species, rare plant communities or other sensitive

ecological resources on or near the site? Yes No

If yes, describe the resource and how it would be affected by the project.

No rare species or other significant natural features are known to occur within an approximate one-mile radius of the project site. See attached letter from Lisa Joyal, Natural Heritage Review Coordinator, Division of Ecological and Water Resources, DNR.

Describe any measures that will be taken to minimize or avoid adverse impacts. Provide the license agreement number (LA-___________) and/or Division of Ecological Resources contact number (ERDB 20120118) from which the data were obtained and attach the response letter from the DNR Division of Ecological Resources. Indicate if any additional survey work has been conducted within the site and describe the results.

12. Physical Impacts on Water Resources. Will the project involve the physical or hydrologic alteration

(dredging, filling, stream diversion, outfall structure, diking, and impoundment) of any surface waters such as a lake, pond, wetland, stream or drainage ditch? Yes No If yes, identify water resource affected and give the DNR Public Waters Inventory (PWI) number(s) if the water resources affected are on the PWI. CD 12/Okabena Creek Describe alternatives considered and proposed mitigation measures to minimize impacts.


Figure 6 is a map of the water resources in the vicinity of the project. Note that the project boundaries include CD 12 (Okabena Creek). Here, the City is proposing, as part of its industrial park project, re-routing a portion of CD 12. CD 12 is an “altered natural watercourse” as that term is defined in Minn. Stat. § 103G.005, subd. 3. An "altered natural watercourse" means a former natural watercourse that has been affected by artificial changes to straighten, deepen, narrow, or widen the original channel). CD 12 is also listed on the public waters inventory as a public watercourse. A public waters work permit is not required for work in altered natural watercourses that are part of drainage systems established under chapter 103D or 103E if the work in the waters is undertaken according to chapter 103D or 103E (Minn. Stat. § 103G.245, subd. 2(1)). Here the proposed realignment of the drainage system will require a proceeding under the drainage code, Minn. Stat. § 103E.227 (Impounding, rerouting and diverting drainage system waters). The work is being completed as a minor ditch change relating to a trunk highway improvement under Minn. Stat. § 161.28. The Nobles County Board (drainage authority) approved the project on April 3, 2012.

The site was examined to determine the existence and boundaries of any wetlands as defined by the “United States Army Corps of Engineers Wetland Delineation Manual (January 1987)” and governed by the Minnesota Wetland Conservation Act. No wetlands were found to exist within the study area boundaries.

13. Water Use. Will the project involve installation or abandonment of any water wells, connection to or changes in any public water supply or appropriation of any ground or surface water (including dewatering)? Yes No If yes, as applicable, give location and purpose of any new wells; public supply affected, changes to be made, and water quantities to be used; the source, duration, quantity and purpose of any appropriations; and unique well numbers and DNR appropriation permit numbers, if known. Identify any existing and new wells on the site map. If there are no wells known on site, explain methodology used to determine. The sanitary sewer extension project area does not include any municipal wells. The project area is not expected to include any private wells. Most of the project area is agricultural field or right of way where wells should not be located. The County Well Index has been checked. Any unexpected wells encountered on site will be sealed in accordance with Minnesota Department of Health requirements. No portion of the project falls within the city of Worthington’s drinking water source management area. The sanitary sewer extension project does not include the installation of any wells nor connections to any public water supply; however, the industrial park will be connected to the public water supply. A water main will be installed parallel to and 35 feet north of the proposed sewer extension. The existing water main under CD 12 will also be repalced during the construction.

14. Water-related land use management districts. Does any part of the project involve a shoreland zoning district, a delineated 100-year flood plain, or a state or federally designated wild or scenic river land use district? Yes No


If yes, identify the district and discuss project compatibility with district land use restrictions. A portion of this project is inside of the 1% Annual Chance (100-year) floodplain (called Zone AE) for CD 12/Okabena Creek, as well as the 0.02% Annual Chance (500-year) floodplain (see Figure 6). It is not in a state or federally designated wild or scenic river land use district. The project area does not lie within a shoreland zoning district.

15. Water Surface Use. Will the project change the number or type of watercraft on any water body? Yes No

16. Erosion and Sedimentation. Give the acreage to be graded or excavated and the cubic yards of soil to be moved: 2.29 acres; 8,000 cubic yards. Describe any steep slopes or highly erodible soils and identify them on the site map. Describe any erosion and sedimentation control

measures to be used during and after project construction. In general, the proposed site gently slopes towards CD 12 that runs through the site. The development of a dedicated storm sewer system in this area has not occurred yet, as little development has occurred in this area. The sanitary sewer extension project will not change the amount of impervious surface, create additional stormwater volume, or increase discharge flow rates. Future industrial park development stormwater management system(s) will be required to meet and/or exceed MPCA and Heron Lake Watershed District requirements. Proposed discharge flow rates will be equal to or less than the existing flow rates. This will prevent erosion and sedimentation. As part of the design process, an Erosion and Sediment Control Plan and a Stormwater Pollution Prevention Plan (SWPPP) will be submitted for review and approval. The contractor must also obtain and comply with NPDES Permit requirements, including the SWPPP. In all areas outside of the construction area, the existing vegetation shall be preserved to prevent erosion. During construction, silt fences and seeding disturbed slopes will be utilized as soon as possible to limit the amount of sediment leaving the site. Silt fences will be installed downgradient from construction areas and wherever runoff from the construction area discharges from the site. Slopes will be flattened in graded areas as much as possible to prevent erosion and sediment deposits. Best management practices (BMPs) will be used for erosion control including topsoil re-spread, turf establishment, silt fences, rock construction entrance, and erosion control mats or wood fiber blankets. The proposed maximum slope on site would be 4:1, or 25 percent. The design team is allowed to use 3:1 slopes for the embankment but will make an effort to design everything as 4:1.

According to the Soil Survey of Nobles County, soils on the site are listed below:

Soil Symbol Soil Name and Description Area (acres) Hydric Slopes > 12%

L83A Webster clay loam, 0 to 2 percent slopes 1.70 Yes No

L85A Nicollet clay loam, 1 to 3 percent slopes 0.59 No No

The distribution of these soil types is shown in Figure 7. Neither of these soils has slopes greater than 12 percent, which is the definition of steep slopes. There is no information available regarding highly erodible soil on the site. The Webster clay loam is considered a hydric soil (see Figure 9).


17. Water Quality – Surface-water Runoff. a. Compare the quantity and quality of site runoff before and after the project. Describe permanent

controls to manage or treat runoff. Describe any storm-water pollution prevention plans. In general, the proposed site gently slopes towards CD 12/Okabena Creek that runs through the site. This site is in the Heron Lake Watershed District, and eventually drains into the Des Moines River. The existing site runoff discharge is mainly from agricultural activities and vacant land. The sanitary sewer extension project will not change the amount of impervious surface, create additional stormwater volume, or increase discharge flow rates. Future industrial park development stormwater management system(s) will be required to meet and/or exceed MPCA and Heron Lake Watershed District requirements. Proposed discharge flow rates will be equal to or less than the existing flow rates. This will prevent erosion and sedimentation. No impacts to Heron Lake or the Middle Des Moines River are anticipated. The proposed discharge will be collected into the stormwater management system prior to being discharged at or below existing flow rates.

As part of the design process, an Erosion and Sediment Control Plan and a SWPPP will be submitted for review and approval. The contractor must also obtain and comply with NPDES Permit requirements, including the SWPPP. In all areas outside of the construction area, the existing vegetation shall be preserved to prevent erosion. During construction, silt fences and seeding disturbed slopes will be utilized as soon as possible to limit the amount of sediment leaving the site. Silt fences will be installed downgradient from construction areas and wherever runoff from the construction area discharges from the site. Slopes will be flattened in graded areas as much as possible to prevent erosion and sediment deposits. BMPs will be used for erosion control including topsoil re-spread, turf establishment, silt fences, rock construction entrance and erosion control mats or wood fiber blankets. The proposed maximum slope on site would be 4:1, or 25 percent. The design team is allowed to use 3:1 slopes for the embankment but will make an effort to design everything as 4:1.

b. Identify routes and receiving water bodies for runoff from the site; include major downstream water bodies as well as the immediate receiving waters. Estimate impact runoff on the quality of receiving waters. The site drains to CD 12, which is in the Heron Lake Watershed, and eventually drains into the Des Moines River. Since no additional stormwater runoff is being created for the sanitary sewer extension project, there will be no adverse environmental impacts to any downstream receiving water bodies.


18. Water Quality – Wastewater. a. Describe sources, composition and quantities of all sanitary, municipal and industrial wastewater

produced or treated at the site. The proposed sanitary sewer extension will collect wastewater from the future industrial park. Because the future industries are not known, sources, composition, and quantities are not specifically known. Complete build out of the sewer district is not projected to occur in the next 20 years.

b. Describe waste treatment methods or pollution prevention efforts and give estimates of composition after treatment. Identify receiving waters, including major downstream water bodies (identifying any impaired waters), and estimate the discharge impact on the quality of receiving waters. If the project involves on-site sewage systems, discuss the suitability of site conditions for such systems. The wastewater will be sent to the Worthington Wastewater Treatment Facility, which ultimately discharges to CD 12, which is not listed as impaired. Although CD 12 is not listed as impaired, there are downstream waters with approved total maximum daily load allocations (TMDLs). Okabena Creek has approved TMDLs for turbidity and fecal coliform impairments, and Heron Lake has an approved TMDL for nutrient (phosphorus) impairment. The industrial park development is not reasonably expected to negatively affect downstream impairments for turbidity, fecal coliform, and nutrients.

c. If wastes will be discharged into a publicly owned treatment facility, identify the facility, describe any pretreatment provisions and discuss the facility’s ability to handle the volume and composition of wastes, identifying any improvements necessary. The wastewater will be sent to the Worthington Wastewater Treatment Facility (WWTF), which has additional capacity to handle the wastewater from the future industrial park. The current design allocation (2012) for flow is 2.75 million gallons per day (mgd); 1.65 mgd of that is allocated, leaving 1.10 mgd available. In the future design allocation (2030) for flow is 2.75 mgd; 1.97 mgd is predicted to be used, leaving 0.78 mgd available. There is adequate capacity at the WWTF to treat the biochemical oxygen demand, total suspended solids, total Kjeldahl nitrogen, and total phosphorus of the wastewater from the future industrial park, in both the current (2012) design and the future (2030) design. Detailed waste load allocations are provided in Appendices 2 and 3. The initial sewer extension will "open up" a new service district having a very long-term potential for development. See Figure 11 for the growth area. Ultimately, this extension could serve 705 acres. It is possible that the extension being considered at this time may need to serve the entire area and is being sized accordingly. Based on that area and commercial/industrial land use, the ultimate projected average and peak flows would be 1.41 mgd and 4.23 mgd. There is no projection as to how long this may take to occur; it may be best regarded as "ultimate development" rather than planned development. The area being labeled as a commercial/industrial park is about 130 acres of which less than 110 acres would be served from the extension. Based on this area (110 acres) the average and peak flows would be .22 mgd and .7 mgd. A large portion, but not all, of this area is currently owned by the City. Extensions of infrastructure in this area will occur as development warrants. There is no specific schedule for development, nor any identifiable users. For reference, a 30-acre industrial area in the community is nearing full occupation after more than 20 years. Projected users are general manufacturing and commercial.


The current extension would serve less than 22 acres of developable land. Based on this area, the average and peak flows would be .044 mgd and .176 mgd.

19. Geologic hazards and soil conditions. a. Approximate depth (in feet) to Ground water: 7 minimum; 36 average. Bedrock: Unknown minimum; Unknown average.

Describe any of the following geologic site hazards to ground water and also identify them on the site map: sinkholes, shallow limestone formations or karst conditions. Describe measures to avoid or minimize environmental problems due to any of these hazards. Groundwater and bedrock information has been compiled from three wells on the Minnesota Department of Health’s County Well Index Online. These wells are nearby, but not within, the project limit. None of the wells had information listed for depth to bedrock. From “Ground Water in Alluvial Channel Deposits, Nobles County, Minnesota” by Ralph F. Norvitch: “The surface of Nobles County is underlain by glacial drift of Pleistocene age and by some alluvial deposits of Recent age. The Recent deposits are thin, patchy accumulations of silt and sand which are restricted to stream channels, flood plains, and lake basins. The drift includes till and outwash and is mantled in places by windblown silt (loess). Till is a heterogeneous mixture of rock fragments ranging in size from clay to boulders which has received little or no sorting after its deposition from the glacial ice. Outwash is dominantly an assorted deposit, which is generally made up of sand and gravel but which may contain fragments ranging in size from clay to boulders.” “There are no known outcrops of bedrock in Nobles County. The glacial deposits are underlain by interbedded sandstone and shale of Cretaceous age which in turn are underlain by Precambrian crystalline rocks. In a few localities crystalline rocks lie directly beneath the drift.”

b. Describe the soils on the site, giving Natural Resources Conservation Service (NRCS) classifications, if known. Discuss soil texture and potential for ground-water contamination from wastes or chemicals spread or spilled onto the soils. Discuss any mitigation measures to prevent such contamination. According to the NRCS Web Soil Survey for Nobles County, soils on the site are listed below. The distribution of these soil types is shown in Figure 7.

Soil Symbol Soil Name and Description Area (acres) Hydrologic Soil Group

L83A Webster clay loam, 0 to 2 percent slopes 1.70 B/D L85A Nicollet clay loam, 1 to 3 percent slopes 0.59 B

Total 2.29

Type A soils (sand, loamy sand, or sandy loam) have low runoff potential and high infiltration rates even when thoroughly wetted. They consist chiefly of deep, well to excessively drained sands or gravels and have a high rate of water transmission (greater than 0.3 inches/hour). Since the rate of water transmission is high on a majority of the site, there is a risk of groundwater contamination from wastes or chemicals reaching the groundwater. Care will be taken to prevent spills.


Type B soils (silt loam or loam) have moderate infiltration rates when thoroughly wetted and consist chiefly of moderately deep to deep, moderately well to well drained soils with moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission (0.15 to 0.30 inches/hour). Type C soils (sandy clay loam) have low infiltration rates when thoroughly wetted and consist chiefly of soils with a layer that impedes downward movement of water and soils with moderately fine to fine texture. These soils have a low rate of water transmission (0.05 to 0.15 inches/hour). Type D soils (clay loam, silty clay loam, sandy clay, silty clay, or clay) have high runoff potential. They have very low infiltration rates when thoroughly wetted and consist of chiefly of clay soils with a high swelling potential, soils with a permanent high water table, soils with a clay pan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils have a very low rate of water transmission (0-0.05 inches/hour).

20. Solid Wastes, Hazardous Wastes, Storage Tanks. a. Describe types, amounts and compositions of solid or hazardous wastes, including solid animal

manure, sludge and ash, produced during construction and operation. Identify method and location of disposal. For projects generating municipal solid waste, indicate if there is a source separation plan; describe how the project will be modified for recycling. If hazardous waste is generated, indicate if there is a hazardous waste minimization plan and routine hazardous waste reduction assessments. Construction activities for this sanitary sewer project will generate significant waste on the site. The amount of waste will be typical of a sanitary sewer construction project. The contractor will dispose of any wastes generated at the site consistent with an approved method and at an approved facility. The contractor will be encouraged to recycle any construction waste that can be recycled. All brush and tree waste generated by construction will be chipped or otherwise recycled, and will not be burned on site. The city of Worthington contracts with Schaap Sanitation to provide for residential solid waste (garbage) and recyclable collection for City residents. The contract also includes a provision for City residents to dispose of tree brush and lawn clippings. After construction, use of the sanitary sewer itself will not create solid waste. However, industries using the industrial park development surrounding the sanitary sewer will generate typical industrial park waste. All solid wastes will be handled by Schaap Sanitation. The neighboring business owners will be encouraged to recycle all municipal solid wastes that can be recycled. The remainder of the municipal solid waste will be disposed of at an approved muncipal waste landfill.

b. Identify any toxic or hazardous materials to be used or present at the site and identify measures to be used to prevent them from contaminating ground water. If the use of toxic or hazardous materials will lead to a regulated waste, discharge or emission, discuss any alternatives considered to minimize or eliminate the waste, discharge or emission. Normal construction wastes are anticipated. Toxic or hazardous materials such as fuel for construction equipment and materials used in the construction of sanitary sewer (paint, contaminated rags,sealants, acids, bases, herbicides, and pesticides) will likely be used during site


preparation and sewer construction. Although spills of these materials are not planned, any spills of reportable quantities that occur, will be reported to the Minnesota Duty Officer. Builders/ contractors are responsible for proper management and disposal of any wastes generated during construction and the City Engineering Department is responsible for management and disposal thereafter. During construction of the project, any toxic or hazardous materials will be properly used, stored, and disposed of when finished.

c. Indicate the number, location, size and use of any above or below ground tanks to store petroleum products or other materials, except water. Describe any emergency response containment plans. There will be no temporary tanks on site during construction. Refueling will take place from tanker trucks, and will occur in areas that are not environmentally sensitive. There will be no permanent storage tanks located on the site after project completion.

21. Traffic. Parking spaces added: 0 Existing spaces (if project involves expansion): 0 Estimated total average daily traffic generated: 0 Estimated maximum peak hour traffic generated and time of occurrence: N/A

Indicate source of trip generation rates used in the estimates.

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. Using the format and procedures described in the Minnesota Department of Transportation’s Traffic Impact Study Guidance (available at http://www.oim.dot.state.mn.us/access/pdfs/Chapter%205.pdf) or a similar local guidance, provide an estimate of the impact 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. The sanitary sewer extension will not add any parking spaces or generate any traffic. The future industrial park most likely will involve parking spaces and generate traffic; however, because the layout of the industrial park is unknown at this time, these impacts will be addressed when the layout is finalized.

22. Vehicle-related Air Emissions. Estimate 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. The sanitary sewer extension will not generate any vehicle-related air emissions. The 1990 Clean Air Act Amendments require that State Implementation Plans must demonstrate how states with nonattainment and maintenance areas will meet federal air quality standards. The U.S. Environmental Protection Agency has not designated Nobles County as a maintenance area for carbon monoxide, particulate matter, or any other air quality indicator. The future industrial park most likely will involve vehicle-related air emissions; however, because the layout of the industrial park is unknown at this time, these impacts will be addressed when the layout is finalized.

http://www.oim.dot.state.mn.us/access/pdfs/Chapter%205.pdf


23. Stationary Source Air Emissions. Describe the type, sources, quantities and compositions of any emissions from stationary sources of air emissions such as boilers, exhaust stacks or fugitive dust sources. Include any hazardous air pollutants (consult EAW Guidelines for a listing), any greenhouse gases (such as carbon dioxide, methane, and nitrous oxides), and ozone-depleting chemicals (chlorofluorocarbons, hydrofluorocarbons, perfluorocarbons or sulfur hexafluoride). Also describe any proposed pollution prevention techniques and proposed air pollution control devices. Describe the impacts on air quality. The sanitary sewer extension will not generate any stationary source air emissions. Fugitive dust may be generated during construction of the project. BMPs will be followed as they are stated within the construction specifications. It is anticipated that the completed sanitary sewer project will not generate significant dust beyond current site conditions. The future industrial park most likely will involve stationary source-related air emissions; however, because the layout of the industrial park is unknown at this time, these impacts will be addressed when the layout is finalized.

24. Odors, noise and dust. Will the project generate odors, noise or dust during construction or during operation? Yes No

If yes, describe sources, characteristics, duration, quantities or intensity and any proposed measures to mitigate adverse impacts. Also identify locations of nearby sensitive receptors and estimate impacts on them. Discuss potential impacts on human health or quality of life. (Note: fugitive dust generated by operations may be discussed at item 23 instead of here.) Temporary noise and odors may occur from operation of heavy equipment for construction activities. Noises common to building sewers will be generated during construction of the project. Construction activities will be conducted in conformance with the City’s noise ordinance. Equipment used in the daily construction operations will be muffled. Noise from construction activities will be limited to 7:00 a.m. to 10:00 p.m. weekdays, with weekend hours limited to 9:00 a.m. to 9:00 p.m. Dust will be controlled by periodic cleanup of the construction site and by limiting the amount of soil disturbance at any given time. Dust will also be controlled through the establishment of permanent vegetative cover. Consideration will be given to suppression of airborne dust by application of water if significant dust generation occurs during site grading. After the sanitary sewer is constructed, odors, dust, and noise should be limited to the existing levels. The nearest sensitive receptors are the residential homes located along portions of the County State Aid Highway 59 corridor.

25. Nearby resources. Are any of the following resources on or in proximity to the site? a. Archaeological, historical, or architectural resources? Yes No

The Minnesota Historical Society responded on October 19, 2011 (Appendix 4) that there are no known archaeological sites within one mile of the project location. According to an e-mail received from Tom Cinadr dated October 19, 2011, “No archaeological sites or historic structures were identified in a search of the Minnesota Archaeological Inventory and Historic Structures Inventory for the search area requested.” No known archaeological or historical sites will be impacted.


b. Prime or unique farmlands or land within an agricultural preserve? Yes No According to the NRCS Web Soil Survey for Nobles County, soils within the project area are listed below. The distribution of these soil types is shown in Figure 10. According to the Prime and Other Important Farmlands of Nobles County, Minnesota (U.S. Department of Agriculture, NRCS, 2011), almost the entire site contains soil units classified as prime farmland or prime farmland when drained.

Soil Symbol Soil Name and Description

Area (acres)

Prime and Other Important Farmlands

L83A Webster clay loam, 0 to 2 percent slopes 1.70 Prime farmland if drained L85A Nicollet clay loam, 1 to 3 percent slopes 0.59 All areas are prime farmland

Total 2.29

c.

Designated parks, recreation areas, or trails? Yes No No state parks or recreation areas are on or directly adjacent to the site. Lake Okabena is within the Worthington city limits. The Herlein-Boote State Wildlife Management Area is approximately four miles to the northwest of the site. No parks, recreation areas, or trails are anticipated to be impacted by this project.

d. Scenic views and vistas? Yes No The site is adjacent to Highway 59 and nearby to Interstate Highway 90. The project impacts agricultural land. No scenic views or vistas from either the landowner’s point of view or automobile driver’s point of view will be affected by addition of sanitary sewer to the project site.

e. Other unique resources? Yes No

26. Visual impacts. Will the project create adverse visual impacts during construction or operation? Such as glare from intense lights, lights visible in wilderness areas and large visible plumes from cooling towers or exhaust stacks? Yes No If yes, explain. The sanitary sewer project will not cause any permanent visual impacts.

27. Compatibility with plans and land use regulations. Is the project subject to an adopted local comprehensive plan, land use plan or regulation, or other applicable land use, water, or resource management plan of a local, regional, state or federal agency? Yes No

If yes, describe the plan, discuss its compatibility with the project and explain how any conflicts will be resolved. If no, explain. Worthington’s Land Use Plan (2004) indicates the project area to be Highway Commercial. Interstate Highway 90 is south of the project, and south of the highway is Highway Commercial. The area to the north and west is Commercial/Industrial Reserve. To the east of the property, on the other side of TH 59, the area is Business Park. This project is compatible with the land use plan.


28. Impact on infrastructure and public services. Will new or expanded utilities, roads, other infrastructure or public services be required to serve the project? Yes No If yes, describe the new or additional infrastructure or services needed. (Note: any infrastructure that is a connected action with respect to the project must be assessed in the EAW; see EAW Guidelines for details.) The sanitary sewer project will not require additional utilities, roads, or other infrastructure; however, the future industrial park will require these things. Because the layout of the industrial park is unknown at this time, these impacts will be addressed when the layout is finalized.

29. Cumulative potential effects. Minn. R. 4410.1700, subp. 7, item B requires that the RGU consider the “cumulative potential effects of related or anticipated future projects” when determining the need for an environmental impact statement. Identify any past, present or reasonably foreseeable future projects that may interact with the project described in this EAW in such a way as to cause cumulative potential effects. (Such future projects would be those that are actually planned or for which a basis of expectation has been laid.) Describe 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 (or discuss each cumulative effect under appropriate item(s) elsewhere on this form). The cumulative effects associated with this project are essentially the effects of suburbanization. This can have both positive and negative cumulative effects socially and environmentally. Some of the cumulative effects that can be observed from the expansion of urban development in the city of Worthington are loss of agricultural land, increased impervious surfaces and, therefore, increased stormwater runoff and potentially increased stormwater pollutants, and loss and fragmentation of wildlife habitat. The proposed project presents opportunities to improve existing conditions or mitigate potential negative impacts. Positive impacts of the project include providing wastewater collection for area residents and business patrons. The proposed project will also assist in improving economic development opportunities at the proposed future industrial park and in the city of Worthington. This project compliments the future industrial park project and is needed. It is recognized that there are past, present, and potential future cumulative effects associated with suburbanization. Currently, the project will increase capacity and fill a gap in the wastewater collection system. Consistent with the City’s comprehensive plan, the City is planning for expansion of urban land use activities, including wastewater collection.

The existing site runoff discharge is mainly from agricultural activities and vacant land. The sanitary sewer extension project will not change the amount of impervious surface, create additional stormwater volume, or increase discharge flow rates. Future industrial park development stormwater management system(s) will be required to meet and/or exceed MPCA and Heron Lake Watershed District requirements. Proposed discharge flow rates will be equal to or less than the existing flow rates. This will prevent erosion and sedimentation. No impacts to Heron Lake or the Middle Des Moines River are anticipated. The proposed discharge will be collected into the stormwater management system prior to being discharged at or below existing flow rates.

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SANITARY SEWEREXTENSION EAW

RegionalLocation Map

I0 5

Miles

October, 2011Figure 1

Source: MNDNR, MNDOT, ESRI

Map Document: \\Arcserver1\gis\WGTN\F13102942\ESRI\Maps\102942-Regional Location Map 85x11.mxdDate Saved: 10/20/2011 11:12:56 AM

CITY OFWORTHINGTON

Project Location

Legend

InterstateU.S. Trunk HighwayMinnesota Trunk HighwayCity Limits

County BoundariesProtected Waters - BasinProtected Waters - Watercourse

Project Boundary

)r

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Ave

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tan Ave

27th St NT-85

M-209

27th St N


USGSTopo Quad

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Source: City of Worthington, MNDOT, MNGEO, USGS

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CITY OFWORTHINGTON

LegendProject BoundaryParcels

)r

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Ave

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Aerial Photo

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Figure 3Source: City of Worthington, MNDOT, MNGEO, 2010 FSA Photography

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CITY OFWORTHINGTON

LegendProject BoundaryParcels

)r

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Ave

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Land Use

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Figure 4Source: City of Worthington, MNDOT, MNGEO, 2010 FSA Photography

Map Document: \\Arcserver1\gis\WGTN\F13102942\ESRI\Maps\102942-Land Use 85x11.mxdDate Saved: 10/28/2011 9:09:16 AM

CITY OFWORTHINGTON

LegendLand Use Plan

Low Density ResidentialHighway CommercialBusiness ParkPublic/Semi-Public

Commercial/Industrial ReserveBusiness Flex Overlay

Project BoundaryParcels

)r


Land Cover

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Source: City of Worthington, MNDOT, MNGEO, 2010 FSA Photography, NRCS

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CITY OFWORTHINGTONLegend

Land CoverAgriculture - 1.66 AcresGrassland - 0.43 AcresRoad - 0.17 AcresWater - 0.03 Acres


Okabena Creek

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Figure 6Source: City of Worthington, MNDNR, MNDOT, MNGEO, 2010 FSA Photography, FEMA

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National Wetlands InventoryDFIRM Zones

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LegendSoilsProject BoundaryParcels

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Ave

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Figure 8Source: City of Worthington, MNDOT, MNGEO, 2010 FSA Photography, NRCS

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Hydrologic Soil GroupsBB/DC/D


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L157A,Lowlein

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L107A,Glencoe

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Figure 9

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CITY OFWORTHINGTON


LegendSoils

Project Boundary

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www.mndnr.gov

AN EQUAL OPPORTUNITY EMPLOYER

November 3, 2011 Correspondence # ERDB 20120118 Ms. Chantill Kahler Royer Bolton & Menk, Inc. 1960 Premier Drive Mankato, MN 56001 RE: Natural Heritage Review of the proposed City of Worthington Sanitary Sewer Extension; T102N R40W Sections 13 & 14; Nobles County Dear Ms. Kahler Royer,

As requested, the Minnesota Natural Heritage Information System (NHIS) has been queried to determine if any rare species or other significant natural features are known to occur within an approximate one-mile radius of the proposed project. Based on this query, there are no known occurrences of rare features in the area searched.

The Natural Heritage Information System, a collection of databases that contains information about Minnesota’s rare natural features, is maintained by the Division of Ecological and Water Resources, Department of Natural Resources. The NHIS is continually updated as new information becomes available, and is the most complete source of data on Minnesota's rare or otherwise significant species, native plant communities, and other natural features. However, the NHIS is not an exhaustive inventory and thus does not represent all of the occurrences of rare features within the state. Therefore, ecologically significant features for which we have no records may exist within the project area.

For environmental review purposes, the results of this Natural Heritage Review are valid for one year; the results are only valid for the project location (noted above) and project description provided on the NHIS Data Request Form. Please contact me if project details change or if an updated review is needed.

Please note that locations of the gray wolf (Canis lupus), federally-listed as threatened and state-listed as special concern, and the Canada lynx (Lynx canadensis), federally-listed as threatened, are not currently tracked in the NHIS. As such, the Natural Heritage Review does not address these species.

Furthermore, the Natural Heritage Review does not constitute review or approval by the Department of Natural Resources as a whole. Instead, it identifies issues regarding known occurrences of rare features and potential effects to these rare features. Additional rare features for which we have no data may be present in the project area, or there may be other natural resource concerns associated with the proposed project. For these concerns, please contact your DNR Regional Environmental Assessment Ecologist (contact information available at http://www.dnr.state.mn.us/eco/ereview/erp_regioncontacts.html). Please be aware that additional site assessments or review may be required.

Thank you for consulting us on this matter, and for your interest in preserving Minnesota's rare natural resources. An invoice will be mailed to you under separate cover. Sincerely,

Lisa Joyal

Natural Heritage Review Coordinator

Minnesota Department of Natural Resources Division of Ecological and Water Resources, Box 25

500 Lafayette Road St. Paul, Minnesota 55155-4025

Phone: (651) 259-5109 E-mail: [email protected]

Appendix 1

http://www.dnr.state.mn.us/eco/ereview/erp_regioncontacts.html�

FLOW BOD TSS TKN TPDESIGN: 2012 2.75 8350 6900 1700 350

Residential/CommercialPopulation: 13,096

Flow gpd/cap: 110 1.44Bod lb/day: 0.25 3,274TSS lb/day: 0.3 3,929 TKN mg/i: 65 781

TP mg/l: 12.5 150.2

Non Resident Students/WorkersNumber: 4,000Flow gpd/per: 20 0.08

Bod lb/day: 0.06 240TSS lb/day: 0.06 240

Tru Shine Truck Wash 0.10 241 314 29 8.4

D& H Transportation 0.025 400 314 7 8.4

TOTAL ALLOCATED/PROJECTED 1.65 4,155 4,797 817 167.0

BALANCE 1.10 4195.03 2103.24 882.59 183.0240.2% 50.2% 30.5% 51.9% 52.3%

2012 Designed Waste Load Allocations Worthington Wastewater Treatment Facility

Appendix 2

FLOW BOD TSS TKN TPDESIGN: 2030 2.75 8350 6900 1700 350

Residential/CommercialPopulation: 16,083

Flow gpd/cap: 110 1.77Bod lb/day: 0.25 4,021TSS lb/day: 0.3 4,825 TKN mg/i: 65 959

TP mg/l: 12.5 184.4

Non Resident Students/WorkersNumber: 4,000Flow gpd/per: 20 0.08

Bod lb/day: 0.06 240TSS lb/day: 0.06 240

Tru Shine Truck Wash 0.10 241 314 29 8.4

D& H Transportation 0.025 400 314 7 8.4

TOTAL ALLOCATED/PROJECTED 1.97 4,902 5,693 996 201.2

BALANCE 0.78 3448.34 1207.21 704.49 148.7728.2% 41.3% 17.5% 41.4% 42.5%

2030 Designed Waste Load Allocations Worthington Wastewater Treatment Facility

Appendix 3

1

Chantill Kahler-Royer

From: Cinadr, Thomas [[email protected]]Sent: Wednesday, October 19, 2011 8:15 AMTo: Chantill Kahler-RoyerSubject: RE: Historic Preservation Information Request, Sanitary Sewer Extension EAW, Worthington,

Nobles County

THIS EMAIL IS NOT A PROJECT CLEARANCE.

This message simply reports the results of the cultural resources This message simply reports the results of the cultural resources This message simply reports the results of the cultural resources This message simply reports the results of the cultural resources database search you requested. The database search produced database search you requested. The database search produced database search you requested. The database search produced database search you requested. The database search produced results for only previously known archaeological sites and historic results for only previously known archaeological sites and historic results for only previously known archaeological sites and historic results for only previously known archaeological sites and historic properties. Please read the note below carefully.properties. Please read the note below carefully.properties. Please read the note below carefully.properties. Please read the note below carefully. No archaeological sites or historic structures were identified in a search of the Minnesota Archaeological Inventory and Historic Structures Inventory for the search area requested. 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.htmhttp://www.mnhs.org/shpo/survey/inventories.htmhttp://www.mnhs.org/shpo/survey/inventories.htmhttp://www.mnhs.org/shpo/survey/inventories.htm

Tom Cinadr

Survey and Information Management Coordinator

Appendix 4

2

Minnesota State Historic Preservation Office

Minnesota Historical Society

345 Kellogg Blvd. West

St. Paul, MN 55102

651-259-3453

From: Chantill Kahler-Royer [mailto:[email protected]]

Sent: Wednesday, October 12, 2011 9:36 AM To: Cinadr, Thomas

Subject: FW: Historic Preservation Information Request, Sanitary Sewer Extension EAW, Worthington, Nobles County

From: Gragg-Johnson, Kelly [mailto:[email protected]]

Sent: Wednesday, October 12, 2011 9:25 AM

To: Chantill Kahler-Royer Subject: RE: Historic Preservation Information Request, Sanitary Sewer Extension EAW, Worthington, Nobles County

You need to send this to Tom Cinadr, our inventory coordinator. Please email him at [email protected]

Thanks,

Kelly

Kelly Gragg-Johnson Review & Compliance Associate MN SHPO 651-259-3455 [email protected]

From: Chantill Kahler-Royer [mailto:[email protected]]

Sent: Wednesday, October 12, 2011 9:19 AM

To: Gragg-Johnson, Kelly Cc: Greg Mitchell

Subject: Historic Preservation Information Request, Sanitary Sewer Extension EAW, Worthington, Nobles County

RE: Historic Preservation Information Request

Sanitary Sewer Extension EAW

Worthington, Nobles County

Project Number – F13.102942

Dear Ms. Gragg-Johnson:

The City of Worthington is preparing an Environmental Assessment Worksheet (EAW) in cooperation with the

Minnesota Pollution Control Agency. There are no Federal monies associated with this project. The funding source for

this project is through the Transportation Economic Development program (TED), which is state money.

Project Description: This project consists of extending an existing 24-inch diameter sanitary sewer, located in BioScience

Drive, from the east side of TH 59 to serve the future industrial park development on the west side of the highway. The

sanitary sewer is proposed to be extended approximately 1,000 feet west of TH 59. Construction of the sanitary sewer is

anticipated in the summer of 2012. The EAW area is located in the following section:

Section Township Range Portions of

3

14 T 102 N R 40 W Northeast quarter

An aerial photo with the area identified is attached for your convenience.

Please perform a search of your records to determine if there are significant archaeological/historical sites in the vicinity

of the project limits.

Thank you for your assistance. I am looking forward to hearing from you. If you have any questions, please contact me.

Sincerely,

Chantill A. Kahler Royer, PE, LEED AP ND

Project Engineer

Bolton & Menk, Inc. Consulting Engineers & Surveyors

1960 Premier Drive

Mankato, MN 56001

P: (507) 625.4171 ext. 2636

M: (507) 327.8430

F: (507) 625.4177

email: [email protected]

www.bolton-menk.com

Worthington Industrial Park Sanitary Sewer Extension EAW · 2012-10-04 · Worthington Industrial Park Sanitary Sewer Extension Environmental Assessment Worthington, Minnesota 3 Worksheet

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