Permit Section IIIB.9 Soil and Erosion Control Plan

Transcription

1 Permit Section IIIB.9 Soil and Erosion Control Plan

2 III.B.9 Soil Erosion and Sediment Control PPM Energy, Inc., has prepared a Storm Water Pollution Prevention Plan SWPPP) for the Elm Creek Wind Project. PPM has submitted an Application for General Stormwater Permit for Construction Activity MN R100001) to the Minnesota Pollution Control Agency MPCA). Prior to initiating site construction, PPM will have received a NPDES/SDS General Stormwater Permit. A copy of the SWPPP is attached here. PPM will submit a copy of the NPDES/SDS General Stormwater Permit to the DOC.

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4 Storm Water Pollution Prevention Plan SWPPP) Elm Creek Wind Project Jackson County, Minnesota Prepared for PPM Energy, Inc. February West 77 th Street Minneapolis, MN Phone: 952) Fax: 952)

5 Construction Storm Water Pollution Prevention Plan SWPPP) Elm Creek Wind Project Located in Jackson County, Minnesota Table of Contents 1.0 Construction Activity Information Contact Information Revised from application submitted to MPCA) General Construction Project Information General site information III.A) Selection of a Permanent Stormwater Management System III.C) Erosion Prevention Practices IV.B) Sediment Control Practices IV.C) Dewatering and Basin Draining IV.D) Additional BMPs for Special Waters and Discharges to Wetlands Appendix A, Parts C and D) Inspections and Maintenance IV.E) Pollution Prevention Management Measures IV.F) Final Stabilization IV.G) Records Retention III.D) Attachments Attachment A General Site Location and Topography Figure 1: Site Location Figure 2: Aerial Photograph Figure 3: Site Topography and Surface Waters Attachment B Construction Layout drawings under separate cover) Attachment C Application and General Stormwater Permit for Construction Activity MN R100001) Attachment D Stormwater Construction Site Inspection Log Attachment E MPCA Notice of Termination The following Stormwater Pollution Prevention Plan SWPPP) has been prepared using the MPCA template to comply with the General Stormwater Permit for Construction Activity. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc i

6 1.0 Construction Activity Information Project Name Elm Creek Wind Project Project Location Briefly describe where construction activity occurs. Include address if available Located in agricultural areas in the northeast corner of Jackson County, Minnesota, northwest of the city of Fairmont in the following sections: MN: T103N, R34W, Sec2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15) and T104N R34 Sec29, 30, 31, 32) City or Township Kimball Township and Enterprise Township County Parcel ID # Attach list if necessary All cities where construction will occur N\A All counties where construction will occur State, Zip Code MN, All townships where construction will occur Kimball, MN; Enterprise, MN Jackson, MN Project Size number of acres to be disturbed) About 55 acres Project Type Residential x Commercial/Industrial x Road Construction Other describe) Cumulative Impervious Surface Existing area of impervious surface 0 acres Post construction area of impervious surface 18 acres gravel roads) Receiving Waters Name of Water Body Type ditch, pond, wetland, lake, stream, river) Appendix A special water? Elm Creek Stream Yes x No South Fork Elm Creek Stream Yes x No Judicial Ditch No. 15 Ditch Yes x No Judicial Ditch No. 33 Ditch Yes x No County Ditch No. 14 Ditch Yes x No Dates of Construction Construction Start Date 5/15/08 Estimated Completion Date 12/31/08 P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 1

7 2.0 Contact Information Revised from application submitted to MPCA) Owner of the Site Business of Firm Name Elm Creek Wind, LLC Federal Tax ID State Tax ID Last Name First Name Title Anderson, Jay Mailing Address Site Manager City Telephone 971) State Zip Code st St Woodstock MN Alternate Contact Telephone Melsha, Joe Joe.Melsha@PPMEnergy.com 503) Contractor Person who will oversee implementation of the SWPPP) Business of Firm Name Elm Creek Wind, LLC Last Name First Name Title Anderson, Jay Mailing Address Site Manager Federal Tax ID Jay.Anderson@PPMEnergy.com City State Tax ID Telephone 971) State Zip Code st St Woodstock MN Alternate Contact Telephone Melsha, Joe Joe.Melsha@PPMEnergy.com 503) Party Responsible for Long Term Operation and Maintenance of the Permanent Stormwater Management System Business of Firm Name Elm Creek Wind, LLC. Last Name First Name Title Perryman, Mark O&M Manager Mailing Address st St Alternate Contact Melsha, Joe Federal Tax ID Mark.Perryman@PPMEnergy.com City Woodstock Joe.Melsha@PPMEnergy.com State Tax ID Telephone 605) State Zip Code MN Telephone 503) P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 2

8 3.0 General Construction Project Information Describe the construction activity what will be built, general timeline, etc.) The Elm Creek Wind Project, located in the Northeast Corner of Jackson, MN, consists of the construction of sixty six 66) wind turbines, foundations, associated site access roads, temporary road widening on county roads, and points of interconnection. The wind turbine model planned for use is the GE 1.5 sle Class II on 80 meter towers. Elm Creek Wind, LLC in the developer of the site and will select the contractor who will oversee development of the site. Road construction is expected to begin May 15, Foundation construction is expected to begin June 1, The turbines and towers are expected to arrive onsite June 8, Final restoration is anticipated December 31, Describe soil types found at the project. The natural soils within the site consist of very poorly drained to well drained loamy soils. Most of the land is cultivated farmland. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 3

9 4.0 General site information III.A) Describe the location and type of all temporary and permanent erosion prevention and sediment control BMPs. Include the timing for installation and procedures used to establish additional temporary BMPs as necessary. III.A.3.a) Structural Practices The project will be phased as described in section 6.0. Generally, areas needing silt fence and other best management practices BMP s) are identified on the plans in Attachment B under separate cover). However, it will be the contractor s and owner s responsibility to determine whether BMP s will be necessary based on actual site conditions and grading operations. Silt fence shall be placed to intercept runoff from identified turbines and crane pads on the construction drawings and from other features including disturbed areas that are located within 200-ft of any surface water, drainage ditch or bluff area. Silt fence may be necessary where site access roads cross any of the surface waters identified within the project site. Specifically, areas needing silt fence will be determined as construction moves forward and it will be the contractor s responsibility to determine whether silt fence will be necessary based on site conditions. Ditch protection will be implemented along roads in order to facilitate sheet flow, where there is potential for runoff to form rills and/or gullies. Generally, ditch protection will only be implemented if the slope length is at least 75 feet with a grade of 3:1 or steeper. However, it will be the contractor s responsibility to determine whether ditch protection will be necessary based on site conditions and grading operations. Ditch protection may include ditch checks, silt fence or erosion logs. Rock construction entrance will be implemented, as necessary, at any point where traffic will be leaving a construction site and entering a paved public roadway to reduce the amount of sediment dust, mud) tracked offsite by construction equipment. Rock construction entrances will not be required if native soils remain within the access road construction limits. Mud mats may be used in lieu of rock construction entrance. Earthen Dike is a mound of stabilized soil which is constructed to divert runoff. Earthen dikes shall be used, as necessary, to either divert uncontaminated runoff from disturbed areas or to divert contaminated runoff into a temporary sediment basin or trap. Temporary Sediment Basins will be implemented for laydown areas, batch plant areas, and other non-linear disturbed areas greater than 10 acres. Temporary sediment basins will be constructed in accordance with the Stormwater Discharge Design Requirements Part III.B) of the General Stormwater Permit Attachment C). P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 4

10 Non-Structural Practices Infiltration into the surrounding soils and filtration by adjacent farmland area will be the primary treatment of runoff. Treatment will also be provided by natural depressions that collect runoff and enhance infiltration and evaporation. Temporary and permanent seeding and mulching will be implemented as necessary on exposed slopes with potential to contribute runoff to surface waters. Exposed ditch slopes will be seeded and mulched as soon as practicable. Appropriate native seed mixes shall be used. Mulch must be certified as weed free and shall be applied at a rate of 1 ½ to 2 tons per acre and appropriately anchored. Significant Materials and Procedures The following is a list of significant materials handled at the site that could contribute pollutants to runoff. Sediment from turbine foundations, crane pads, site access roads, laydown areas, batch plant areas and the collection system will be the primary source of pollution during construction activities. Hazardous materials that may be on site include gasoline, diesel, oil, turbine lubricants oils and greases), touch up paint, transformer oil, concrete curing compound, form release compound, etc. All hazardous materials will be properly stored, including secondary containment, to prevent spills, leaks, or other discharge. Restricted access to storage areas will be provided to prevent vandalism. Storage and disposal of hazardous materials must be in compliance with MPCA regulations. Exposed non-tilled positive slopes within 200 of any surface waters will be stabilized through use of seed and mulch according to the following table. Type of Slope Time maximum time an area can remain open when the area is not actively being worked) Steeper than 3:1 7 days 10:1 to 3:1 14 days Flatter than 10:1 21 days P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 5

11 Attach to this SWPPP a site map that includes the following features III.A.3.b f): Existing and final grades, including dividing lines and direction of flow for all pre and postconstruction stormwater runoff drainage areas located within the project limits. Locations of impervious surfaces and soil types. Locations of areas not to be disturbed. Location of areas of phased construction All surface waters and existing wetlands within one-half mile from the project boundaries that will receive stormwater runoff from the site identifiable on maps such as USGS 7.5 minute quadrangle maps or equivalent). Where surface waters receiving runoff associated with construction activity will not fit on the plan sheet, they must be identified with an arrow, indicating both direction and distance to the surface water. Methods to be used for final stabilization of all exposed soil areas. Attachment A shows the site location, turbine locations, site access roads, and locations of surface waters on an aerial photograph and on a topographic map. Attachment B includes the road construction drawings showing locations of erosion control features, turbines, and site access roads. Attachment B is bound under separate cover. Attachment C includes a copy of the application and General Stormwater Permit for Construction Activity. Were stormwater mitigation measures required as the result of an environmental, archaeological, or other required local, state, or federal review of the project? If yes, describe how these measures were addressed in the SWPPP. III.A.5.) No. Is the project located in a karst area such that additional measures would be necessary to protect drinking water supply management areas as described in Minn. R. chapters 7050 and 7060? If yes, describe the additional measures to be used. III.A.6.) The project is not located in a karst area. Does the site discharge to an impaired water that has an approved TMDL implementation plan that contains requirements for construction stormwater discharges? III.A.7) If yes, Identify the receiving water and the areas of the site discharging to it Describe the type and locations of BMPs that are appropriate for the site and sufficient to comply with all applicable requirements of the TMDL implementation plan. The site does not discharge to impaired waters. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 6

12 5.0 Selection of a Permanent Stormwater Management System III.C) Will the project create a new cumulative impervious surface greater than or equal to one acre? Yes x No If yes, a water quality volume of ½ inch of runoff from this area must be treated before leaving the site or entering surface waters 1 inch if discharging to special waters). Describe which method will be used to treat runoff from the new impervious surfaces created by the project III.C): Infiltration/Filtration Regional ponds Combination of practices Include all calculations and design information for the method selected. See Part II.C of the permit for specific requirements associated with each method. The primary source of runoff associated with construction will be from gravel site access roads. A small amount of runoff will also be created from each of the turbine s foundations and points of interconnection. Runoff from these sources will be treated by infiltration into the surrounding naturally permeable soil. Much of the areas adjacent to the turbines and access roads are cultivated fields. Describe why it is not feasible to meet the treatment requirement for the water quality volume. This can include proximity to bedrock or road projects where the lack of right of way precludes the installation of any permanent stormwater management practices. Describe what other treatment, such as grasses swales, smaller ponds, or grit chambers, will be implemented to treat runoff prior to discharge to surface waters. III.C) N/A If proposing an alternative method to treat runoff from the new impervious surfaces, describe how this alternative will achieve approximately 80% removal of total suspended solids on an annual average basis III.C.5). NOTE: If proposing an alternative method, you must submit your SWPPP to MPCA at least 90 days prior to the starting date of the construction activity. N/A P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 7

13 6.0 Erosion Prevention Practices IV.B) Describe construction phasing, vegetative buffer strips, horizontal slope grading, and other construction practices to minimize erosion. Delineate areas not to be disturbed e.g., with flags, stakes, signs, silt fence, etc.) before work begins. Silt fence and other BMP s will be implemented prior to construction at each construction area, as necessary. Construction shall be phased to minimize the area and duration of exposed soils. Disturbed areas must be stabilized as each construction activity is completed. Erosion control practices shall be maintained throughout construction, until vegetation has been established. Areas to be disturbed are the access roads, turbine foundations, laydown areas, batch plansts, points of interconnection, and plowing in the underground electrical collection system and are shown on Attachment B under separate cover). The project roads and turbine locations will be staked before construction begins. There are no access roads crossing the DNR public wetlands. Exposed ditch slopes created due to construction will be seeded and mulched as soon as practicable in accordance to the general permit. Describe temporary erosion protection or permanent cover used for exposed positive slopes within 200 lineal feet of a surface water see section IV.B.2 for maximum time an area can remain exposed based on slope steepness). Exposed non-tilled slopes within 200 feet of a surface water will be seeded and mulched according to the following table. Appropriate native prairie species will be planted with seeds from certified providers where exotics are minimized. Type of Slope Time maximum time an area can remain open when the area is not actively being worked) Steeper than 3:1 7 days 10:1 to 3:1 14 days Flatter than 10:1 21 days For drainage or diversion ditches, describe practices to stabilize the normal wetted perimeter within 200 lineal feet of the property edge or point of discharge to a surface water. N/A Describe other erosion prevention practices list and describe). N/A P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 8

14 7.0 Sediment Control Practices IV.C) Describe sediment control practices used to minimize sediments from entering surface waters, including curb and gutter systems and storm drain inlets. At a minimum, these sediment control practices must include: Sediment controls for temporary or permanent drainage ditches and sediment basins that are designed as part of a treatment system Installation of check dams or other grade control practice to ensure sheet flow and prevent rills for slope lengths greater than 75 feet with a grade of 3:1 or steeper). Sediment control practices on all down gradient perimeters prior to land disturbing activities. Storm drain inlet protection for all inlets. Silt fencing or other sediment control surrounding temporary soil stockpiles. Minimize vehicle tracking of sediments e.g., stone pads, concrete or steel wash racks, or equivalent systems). Street sweeping of tracked sediment. Temporary sedimentation basins see Part III.B). Ditch protection will be implemented along roads in order to facilitate sheet flow where there is potential for runoff to form rills and/or gullies. Generally, ditch protection will only be implemented if the slope length is at least 75 feet with a grade of 3:1 or steeper. However, it will be the contractor s responsibility to determine whether ditch protection will be necessary based on site conditions and grading operations. Ditch protection may include ditch checks, silt fence or erosion logs. Silt fence shall be placed to intercept runoff from identified turbines and crane pads on the construction drawings and from other features including disturbed areas that are located within 200-ft of any surface water, drainage ditch, or bluff area. Silt fence may be necessary where site access roads cross any of the surface waters identified within the project site. Specifically, areas needing silt fence will be determined as construction moves forward and it will be the contractor s responsibility to determine whether silt fence will be necessary based on site conditions. Rock construction entrance will be implemented, as necessary, at any point where traffic will be leaving a construction site and entering a paved public roadway to reduce the amount of sediment dust, mud) tracked offsite by construction equipment. Rock construction entrances will not be required if native soils remain within the access road construction limits. Mud mats may be used in lieu of a rock construction entrance. Temporary Sediment Basins will be implemented for laydown areas, batch plant areas, and other non-linear disturbed areas greater than 10 acres. Temporary sediment basins will be constructed in accordance with the Stormwater Discharge Design Requirements Part III.B) of the General Stormwater Permit Attachment C). Earthen Dike is a mound of stabilized soil which is constructed to divert runoff. Earthen dikes shall be used, as necessary, to either divert uncontaminated runoff from disturbed areas or to divert contaminated runoff into a temporary sediment basin or trap. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 9

15 8.0 Dewatering and Basin Draining IV.D) Will the project include dewatering or basin draining? Yes x No If yes, describe BMPs used so the discharge does not adversely affect the receiving water or downstream landowners. Significant dewatering is not anticipated. In the unlikely event that groundwater may be encountered during excavation, dewatering may be required. In the event of heavy rainfall, water may accumulate in the excavation and dewatering may be required by use of sump and small pumps. The main treatment will be provided by infiltration into the surrounding naturally permeable soil and by temporary sedimentation basins in accordance to Part IV.D) of the General Stormwater Permit Attachment C). 9.0 Additional BMPs for Special Waters and Discharges to Wetlands Appendix A, Parts C and D) Special Waters. Does your project discharge to special waters? Yes x No If no, skip to Wetlands section below. Wetlands. Does your project discharge stormwater with the potential for significant adverse impacts to a wetland e.g., conversion of a natural wetland to a stormwater pond)? Yes x No If Yes, describe the wetland mitigation sequence that will be followed in accordance with Part D of Appendix A Inspections and Maintenance IV.E) Describe procedures to routinely inspect the construction site: Once every seven 7) days during active construction and, Within 24 hours after a rainfall event greater than 0.5 inches in 24 hours. Inspections must include stabilized areas, erosion prevention and sediment control BMPs, and infiltration areas. Jay Anderson of Elm Creek Wind, LLC or his designee, will have primary responsibility for ensuring the construction site is inspected for compliance with the General Permit and this SWPPP. Inspections will occur at least once every seven days plus within 24 hours after a rainfall of 0.5 or more in 24 hours. A form to be used for inspections is provided in Attachment D. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 10

16 11.0 Pollution Prevention Management Measures IV.F) Describe practices to properly manage and dispose of solid waste, including trash IV.F.1) Containers for storing trash will be provided at the site during and after construction. There are no existing buildings to be demolished or other large sources of solid waste. Described practices to properly manage hazardous materials IV.F.2). Hazardous materials that may be on site include gasoline, diesel, oil, turbine lubricants oils and greases), touch up paint, transformer oil, concrete curing compound, form release compound, etc. All hazardous materials will be properly stored, including secondary containment, to prevent spills, leaks, or other discharge. Restricted access to storage areas will be provided to prevent vandalism. Storage and disposal of hazardous materials must be in compliance with MPCA regulations. Describe practices for external washing of trucks and other construction vehicles IV.F.3) Washing of trucks or other construction vehicles will be limited to a defined area of the site and will be performed on gravel pads protected by silt fence on the down-gradient side. Engine degreasing will not be allowed on this site. Temporary concrete washout facilities will be used to contain concrete and liquids when the chutes of concrete mixers and hoppers of concrete pumps are rinsed out after delivery. Temporary washout facilities should have a temporary pit or bermed areas of sufficient volume to completely contain all liquid and waste concrete materials generated during washout procedures. Temporary washout facilities shall be lined to promote evaporation. Plastic lining material should be a minimum of 10 mil in polyethylene sheeting and should be free of holes, tears, or other defects that compromise the impermeability of the material. Describe your spill prevention plan. In the unlikely event of a spill, leak, or overflow that results in the discharge of pollutants, records of the event must be documented and maintained. A release of any chemical, oil, petroleum product, sewage, etc., which may enter waters of the state or any other environmental emergency must be reported to the appropriate agency. MN Duty Officer or ) Describe measures to address sanitary and septic waste. Portable toilets that are emptied by pump trucks that remove the sewage from the site will be used during construction. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 11

17 12.0 Final Stabilization IV.G) Describe how you will achieve final stabilization of the site IV.G). Submit a NOT within 30 days after final stabilization. Elm Creek Wind, LLC will submit a Notice of Termination NOT) Attachment E) within 30 days after final stabilization is complete, or another owner/operator has assumed control according to Part II.B.5 of the General permit over all areas of the site that have not undergone final stabilization. Final stabilization is reached when all soil disturbing activities at the site have been completed, and uniform vegetative cover has been established with a density of at least 70 percent of pre-disturbance levels or equivalent permanent, physical erosion reduction methods have been employed. All exposed, non-tilled, disturbed areas must be revegetated and stabilized with seed and mulch as soon as practicable. Appropriate native seed mixes shall be used. Mulch must be certified as weed free and shall be applied at a rate of 1 ½ to 2 tons per acre and appropriately anchored. The primary treatment of runoff after construction is complete will be consistent to the pre-project conditions. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 12

18 13.0 Records Retention III.D) Describe your record retention procedures must be kept at the site) III.D). Records must include: Copy of SWPPP and any changes Inspection and maintenance records Permanent operation and maintenance agreements Calculations for the design of temporary and permanent stormwater management systems. 1. Elm Creek Wind, LLC and its contractor to be determined), shall retain a copy of the Storm Water Pollution Prevention Plan SWPPP) at the construction site from the date of project initiation to the date of final stabilization. 2. Elm Creek Wind, LLC shall retain copies of SWPPP and all reports required by this permit, and records of all data used to complete the application to be covered by this permit for a period of at least three 3) years from the date of final stabilization. 3. All written correspondence to the MPCA should be sent to the following address: Minnesota Pollution Control Agency Construction Storm Water Program 520 Lafayette Road North St. Paul, MN The Permittees) must amend the SWPPP as necessary to include any additional requirements, such as additional or modified BMPs, designed to correct problems identified or address situations whenever: a. There is a change in design, construction, operation, maintenance, weather or seasonal conditions that has a significant effect on the discharge of pollutants to surface waters or underground waters; b. Inspections or investigations by site operators, local, state, or federal officials indicate the SWPPP is not effective in eliminating or significantly minimizing the discharge of pollutants to surface waters or underground waters or that the discharges are causing water quality exceedances; or c. The SWPPP is not achieving the general objectives of controlling pollutants in stormwater discharges associated with construction activity, or the SWPPP is not consistent with the terms and conditions of this permit. d. As required by MPCA based on a finding that the project is impacting water. P:\Mpls\23 MN\46\ ppm elm creek\workfiles\swppp\elm Creek Stormwater Pollution Prev Plan SWPPP).doc 13

19 Attachment A General Site Location and Topography

20 Hwy 14 Sleepy Eye New Ulm Walnut Grove Springfield BROWN COUNTY Comfrey Godahl Doveray Hwy 7 Storden Hwy 30 Fulda Hwy 62 COTTONWOOD COUNTY Hwy 13 Wilder Hwy 71 Windom Bingham Lake Mountain Lake Hwy 29 Butterfield Hwy 5 Odin Hwy 60 Ormsby WATONWAN COUNTY Hwy 15 NOBLES COUNTY Hwy 60 Heron Lake Okabena JACKSON COUNTY Lakefield Hwy 86 Hwy 17 Hwy 14 Hwy 30 Bergen Hwy 71 Hwy 44 SITE LOCATION Hwy 4 Trimont MARTIN COUNTY Worthington I-90 Jackson Alpha Hwy 29 Sherburn P:\Mpls\23 MN\46\ \WorkFiles\Geotech\Reports\Figures\Site Location.CDR RLG MINNESOTA Mpls New Ulm Worthington MINNESOTA IOWA SITE LOCATION N Approximate Scale in Miles Figure 1 SITE LOCATION Elm Creek Wind Project Jackson County, Minnesota

21 th St Turbine Location * # Met Tower 890th St * # 600th Ave 590th Ave 580th Ave 570th Ave PMT th Ave th Ave th St ALT ; N Barr Footer: Date: 2/22/ :45:47 AM File: I:\Projects\23\46\022\Maps\Aerial_Photography.mxd User: bal 870th St 0 45 CRM 46 CRM CRM 54 ALT 56 ALT 53 ALT 55 ALT 57 ALT 58 ALT 1,500 Feet 3,000 4,500 6, ALT 61 ALT 59 ALT 62 ALT Meters 500 1,000 1, th St 63 ALT 64 * # PMT th St 7,500 Figure AERIAL PHOTOGRAPHY Elm Creek Wind Project Jackson County, MN 2,000

22 th St Turbine Location # * Met Tower 890th St # * th St th Ave 590th Ave 580th Ave 570th Ave PMT th Ave th Ave ; 42 ALT N th St Barr Footer: Date: 2/22/ :37:25 AM File: I:\Projects\23\46\022\Maps\USGS_Map.mxd User: bal 0 45 CRM 46 CRM 53 ALT 54 ALT CRM 57 ALT 55 ALT 56 ALT 59 ALT 58 ALT 1,500 Feet 3,000 4,500 6, ALT 60 ALT 62 ALT Meters 500 1,000 1, th St 63 ALT 64 # * PMT th St 7,500 Figure USGS MAP Elm Creek Wind Project Jackson County, MN 2,000

23 Attachment B Construction Layout See drawings Elm Creek Wind Project, under separate cover)

24 Attachment C Application and General Stormwater Permit for Construction Activity MN R100001)

25 To print only your application, select pages 1-3 in the menu that appears when you push 'Print' National Pollutant Discharge Elimination System NPDES)/State Disposal System SDS) Application for General Stormwater Permit for Construction Activity MN R100001) PLEASE SUBMIT TO: Minnesota Pollution Control Agency Construction Stormwater Permit Program 520 Lafayette Road North, St. Paul, MN MPCA use only ID # Check # PLEASE READ: This form is for new permit applications only. Use the Transfer/Modification form to transfer a permit to one party or the Subdivision Registration form for multiple parties. All forms are available at the MPCA s Construction Stormwater Web site: Please refer to the application instructions and the NPDES/SDS General Stormwater Permit for Construction Activity MN R100001) as you complete this form. Brackets [ ] refer to the Stormwater Permit, which is included with this application. Call the MPCA Customer Assistance Center at or in Minnesota) for assistance. Are you ready to apply? 1. Stormwater Pollution Prevention Plan SWPPP) a. Has a Stormwater Pollution Prevention Plan been developed for this project and incorporated into the project s plans and specifications? [see attached General Stormwater Permit Part III.A] Yes b. Are erosion prevention measures addressed in the SWPPP? [Part IV.B] Yes No c. Are sediment control measures addressed in the SWPPP? [Part IV.C] Yes No d. Are dewatering and basin draining addressed in the SWPPP? [Part IV.D] Yes No e. Are inspections and maintenance addressed in the SWPPP? [Part IV.E] Yes No f. Are pollution prevention management measures addressed in the SWPPP? [Part IV.F] Yes No g. Is final stabilization addressed in the SWPPP? [Part IV.G] Yes No h. If an environmental review was required, did you incorporate all stormwater related mitigation Yes No NA measures contained in the review into the SWPPP? STOP if you responded No to any question above. A SWPPP must be developed prior to submitting a permit application. Complete the above requirements and check Yes before submitting this application. Continue if you responded Yes or NA to all questions above. No 2. Discharges to Special Waters a. Are all stormwater discharges that may flow from the project to a Special Water that is located within 2,000 feet of any project discharge points addressed in the SWPPP to meet the permit conditions in Appendix A, Part A-C? Yes No NA STOP if you responded No. Complete the above requirements and check Yes before submitting this application. Continue if you responded Yes. 3. Additional Application Review a. Will the project include alternative treatment methods? [Part III.C.5] If yes, this application and the alternative treatment plans must be submitted a minimum of 90 days before construction starts. Yes No b. If yes, are the plans attached? Yes No c. Will the project disturb 50 acres? AND Is there a discharge point within 2000 feet of an impaired or special water whose discharge may reach an impaired or special water listed in Appendix A of the permit? [Part II.B.1.b] If yes, this application and the SWPPP must be submitted a minimum of 30 days before construction starts. Yes No d. If yes, is the SWPPP attached? Yes No 4. Application Fee Is the required $400 Application Fee payable to the MPCA) enclosed? Yes wq-strm Updated 07/07

26 Construction Activity Information 5. Project Name Elm Creek Wind Project 6. Project Location Located in agricultural areas in the northeast corner of Jackson County, MN Briefly describe where construction activity occurs - Example: Intersection of 45th Street and Irving Avenue. Include address if available Kimball Township, Enterprise Township MN City or Township State Zip Code MN: T103N, R3WW, Sec 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15) and T104N R34 Sec 29, 30, 31, 32) County Parcel ID # Attach list if necessary N/A All cities where construction will occur Jackson All counties where construction will occur Kimball, Enterprise All townships where construction will occur 7. Project Size 55 Number of acres to be disturbed 8. Project Map Is the required 8 ½ x 11 United States Geological Survey USGS) 7.5 minute quad or equivalent map indicating site boundaries attached? Yes 9. Project Type Residential Commercial/Industrial Road Construction Other 10. Cumulative Impervious Surface 11. Permanent Stormwater Management a. Existing area of impervious surface 0 to the nearest quarter acre) b. Post construction area of impervious surface 18 to the nearest quarter acre) If new impervious surface created by the project is less than one acre, skip to question 12. What types check all that apply) of permanent stormwater management will be used if more than one acre of new impervious surface is created by the project? [Part III. C] Wet Sedimentation Basin Infiltration/Filtration Regional Ponding Alternative Methods If using alternative methods, construction cannot commence until receiving approval from the MPCA.) 12. Receiving Waters Other Specify reason and list other treatment allowed by Part III. C) Identify surface waters within ½ mile of project boundary that will receive storm water from the site or discharge from permanent Stormwater management system. Include waters shown on USGS 7.5 minute quad or equivalent, all Special Waters identified in Appendix A of the permit and/or any impaired waters To find Special or Impaired Waters, use the Special and Impaired Waters Search tool at Use additional paper if necessary. Name of Water Body Type ditch, pond, wetland, lake, stream, river) 13. Dates of Construction 05 / 15 / / 31 / 2008 a. Construction Start Date b. Estimated Completion Date Special Water? See Stormwater Permit Appendix A) Impaired Water? Elm Creek stream Yes No Yes No South Fork Elm Creek stream Yes No Yes No Judicial Ditches Nos.15 & 33 ditch Yes No Yes No County Ditch No. 14 ditch Yes No Yes No wq-strm Updated 05/07

27 This form will not be accepted if the Owner and Contractor contact information sections, below, are BOTH not completed and signed. If the owner is also the contractor, or a contractor hasn t yet been selected, the owner must also fill out the contractor information section and sign again. Responsible Parties 14. Owner Elm Creek Wind LLC Business or Firm Name Federal Tax ID State Tax ID BOTH PARTIES MUST SIGN Anderson Jay Site Manager jay.anderson@ppmenergy.com 971 ) ext. Last Name First Name Title Telephone include area code) 4 151st St Woodstock MN Mailing Address City State Zip Code Melsha Joe joe.melsha@ppmenergy.com 503 ) ext. Last Name Alternate Contact) First Name Telephone include area code) I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the NPDES/SDS General Stormwater Permit Construction Activity MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. X Authorized Signature This Application must be signed by: Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. Municipality, State, Federal or Other Public Agency: principal executive officer or ranking elected official. 15. Contractor Elm Creek Wind LLC Business or Firm Name Federal Tax ID State Tax ID Anderson Jay Site Manager jay.anderson@ppmenergy.com Date ) - ext. Last Name First Name Title Telephone include area code) 4 151st St Woodstock MN Mailing Address City State Zip Code Melsha Joe joe.melsha@ppmenergy.com 503 ) ext. Last Name Alternate Contact) First Name Telephone include area code) I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the NPDES/SDS General Stormwater Permit for Construction Activity MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. X Authorized Signature This Application must be signed by: Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. Municipality, State, Federal or Other Public Agency: principal executive officer or ranking elected official. Date wq-strm Updated 05/07

28 This Page Left Intentionally Blank wq-strm2-58 Revised 04/06

29 APPLICATION INSTRUCTIONS for MINNESOTA S NPDES/SDS GENERAL STORMWATER PERMIT for CONSTRUCTION ACTIVITY Submission of an application is notice that the owner and general contractor identified on the application intend to be authorized by an NPDES/SDS permit issued for Stormwater discharges associated with a construction activity in the State of Minnesota. Permit Application Prerequisites For Questions 1-3, please refer to the NPDES/SDS General Stormwater Permit for Construction Activity and the flowchart at the end of these instructions. 1. Indicate if a Stormwater Pollution Prevention Plan SWPPP) has been prepared and the appropriate sections a through h of this question) have been addressed by answering Yes or No. A SWPPP is a plan for Stormwater discharge that includes erosion prevention measures and sediment controls that, when implemented, will decrease soil erosion on a parcel of land and decrease pollution in receiving waters. This plan must be developed prior to submitting a permit application. A sample plan and development tools are available on the U.S. Environmental Protection Agency web page at For section h indicate if an Environmental Review has been completed if required, by answering Yes or No or NA. Environmental review looks at how a proposed project could potentially affect the environment and looks at ways to avoid or minimize impacts before the project is permitted and built. Examples of categories that may need an environmental review include residential development; industrial, commercial, and institutional facilities; and also highway projects. For certain projects, environmental review is mandatory. For more details see the Guide to Minnesota Environmental Review Rules, Chapter 6. This can be found at 2. Indicate if discharges to special waters have been identified and addressed by answering Yes or No or NA not applicable) on the Permit Application. The questions at the right can help in making this determination. Special waters have qualities that warrant extra protection. A list of these special water categories can be found in Appendix A of the permit. For information on special waters near the project s area, see the Minnesota Pollution Control Agency MPCA) Web page at Special Waters 2.a. Do you have a special water that is within 2,000 feet of the project? see Appendix A of the Permit for a list of these Special water categories) 2.b. Do you have storm-water discharges that are within 2,000 feet of these special waters? 2.c. Will the discharges identified in 2.b. flow to the special waters? wq-strm2-58 Revised_04/06

30 3. Indicate by answering Yes or No whether the project will include alternative methods for the permanent Stormwater management system or will disturb 50 acres or more and have a discharge point including sheet flow) that is within 2000 feet of and flows to an impaired or special water. Additional review from the MPCA is required in these cases. You have the option of proposing an alternative, innovative, permanent Stormwater management system. You must send in the permit application and the additional required information see Part III.C.5 of the Permit) at least 90 days prior to the start of construction if you choose this approach. You must receive an approval letter from the MPCA for this method before beginning construction. The application and SWPPP need to be submitted to the MPCA a minimum of 30 days prior to the start of construction if the project disturbs 50 acres or more and drains to an impaired water or a special water listed in Appendix A of the permit. For a list and maps of impaired waters in MN go to 4. The application requires a $400 application fee. Indicate that the application fee has been enclosed by answering Yes. Please make checks payable to: Minnesota Pollution Control Agency and submit the check with the completed application to: MPCA, Regional Environmental Management Division, 520 Lafayette Road North, St. Paul, MN Applications received without the required fee will be returned to the sender. Construction Activity Information 5. List the construction project s name. If the project does not have a name, list the type of project and a brief description for example, I-35E/I-494 Interchange or Highway 169 bridge replacement #79605) at the Rum River ). 6. Provide an address if available) and brief description of the construction activity s location for example, North West Corner of the Intersection of 45 th Street and Irving Avenue, Minneapolis, MN ). List the County Parcel ID# for the project if it is known. If there are multiple numbers within the project, attach a list. Parcel Identification Numbers are unique numbers assigned by the County. Listing the County Parcel ID# is not required if not available for example, highway projects) Provide the names of all cities, counties, and townships the construction activity takes place in for example, a roadway may cross county, city, or township boundaries). 7. List, in acres, the amount of area to be disturbed for this project. 8. Attach the required map and indicate that it is included with the permit application. United States Geological Survey USGS) 7.5-minute quad maps or equivalent maps may be used. USGS 7.5-minute quad maps may be ordered at 9. Indicate the type of construction activity by checking the appropriate box. Please describe the project if you check Other. 10. Indicate to the nearest quarter acre, the existing and resulting areas of impervious surfaces. Impervious surface means a constructed hard surface that either prevents or retards the entry of water into the soil and causes water to run off the surface in greater quantities and at an increased rate of flow than prior to development. Examples include rooftops, sidewalks, patios, driveways, parking lots, storage areas, and concrete, asphalt, or gravel roads. a.) Existing area means the area of impervious surface that is present prior to the start of this construction project. b.) Post construction means the entire area of impervious surface after construction is completed. Subtract a.) from b.) to determine the area of new impervious surface. 11. For projects creating one or more acres of cumulative new impervious surfaces, check the appropriate box to indicate which types) of permanent Stormwater management practices that will be used. The Other box is limited to those situations such as proximity to bedrock) that are described in Part III.C of the permit. See the permit for a further description. If the Other box is checked, describe which situation outlined in Part III. C. fits the project and what other permanent treatment such as grassed swales, smaller ponds and/or grit chambers) will be used on the project. 12. BRIEFLY describe which waterbodys) will receive Stormwater runoff from the construction site or from the discharge from permanent Stormwater management systems by completing the table. To determine which waterbodys) will wq-strm2-58 Revised 04/06

31 receive Stormwater runoff discharges, make a brief survey of the project s surrounding area. Include the waters identified on a USGS 7.5-minute quad or equivalent map. See Appendix A of this permit to determine if a water body is a special water. To find special or impaired waters, use the Special and Impaired Waters Search tool at: List the start and estimated completion dates of the construction project for example, 9/18/05). Responsible Parties 14. Owner Information: Provide the information requested of the owner of the company, organization, or other entity for which this construction project is being done. The Owner means the person or party possessing the title of the land on which the construction activities will occur; or if the construction activity is for a lease holder, the party or individual identified as the lease holder; or the contracting government agency responsible for the construction activity. The owner is the party responsible for the compliance with all terms and conditions of the permit. The alternate contact should be the owner s representative in charge of the project for example, Sandy Smith, Inspector; Joe Johnson, Project Manager; etc). After completing this application, certify it with a signature and date from an individual authorized to sign the application. This application form must be signed by either a principal executive officer, vice president, representative agent responsible for overall operations, general partner, or a proprietor. If the activity is being conducted by a unit of government state, county, municipality, or township), this application must be signed by a principal executive officer or ranking elected official for example, city or county engineer, administrator, or manager; director of public works; mayor, etc.) For additional information, see Minnesota Rules Contractor Operator) Information: Provide the information requested of the contractor. The Contractor means the party who signs the construction contract with the owner to construct the project described in the final plans and specifications. Where the construction project involves more than one contractor, the general contractor will be the party responsible for managing the project on behalf of the owner. In some cases the owner may be the general contractor. In these cases, the owner may contract an individual as the operator who would be the co-permittee. The operator usually the general contractor) is jointly responsible with the owner for compliance with part II.B., part II.C., and part IV of the permit. After this application has been completed by the owner, the contractor must certify it with a signature and date from an individual authorized to sign the form. The application must be signed by either a principal executive officer, vice president, representative agent responsible for overall operations, general partner, or a proprietor. If the general contractor is a unit of government state, county, municipality, or township), this application must be signed by a principal executive officer, ranking elected official, administrator, manager, coordinator, or engineer. For additional information, see Minnesota Rules ) The alternate contact should be the contractor s representative in charge of the project for example, Scott Marshall, Head Foreman; Ann Johnson, Project Manager, etc.). Send the completed application and fee to: MPCA Regional Environmental Management Division 520 Lafayette Road North St. Paul, MN Questions? Contact the MPCA Customer Assistance Center at 800) or 651) For businesses with fewer than 100 employees, contact the MPCA Small Business Assistance Program at 800) wq-strm2-58 Revised 04/06