G The purpose of this open house is to provide information about. Welcome. NPPD s 345 kv transmission line project.

Transcription

1 Welcome The purpose of this open house is to provide information about NPPD s 345 kv transmission line project.

2 NPPD: Who We Are Nebraska Public Power District was formed on Jan. 1, 1970 through the merger of: Consumers Public Power District Platte Valley Public Power & Irrigation District Nebraska Public Power System Nebraska s largest electric generating utility Governed by an 11-member, popularly-elected Board of Directors Employ more than 2,000 people across the state Serve both retail and wholesale customers Integrated utility system, with: Generation facilities Transmission facilities Distribution facilities Diverse mix of generation resources, which includes: Coal Nuclear Hydroelectric Wind Natural Gas Diesel/Other 40 percent of our energy mix for native load is carbon-free

3 The Path of Electricity How Electricity is Delivered from the Generating Facility to You From the generating facility, electric energy is delivered through a series of lines and substations where the voltage is reduced to the proper level for end-use customers. Generating Facility Extra High Voltage (EHV) Transmission Lines Extra High Voltage (EHV) Transmission Lines Transmission Industry Sub-Transmission Lines Sub-Transmission Local Distribution Lines Farms Small Business Schools Homes G ZIP From the power plant, electric energy is delivered through a series of lines and substations where the voltage is reduced to the proper level for end-use customers.

4 R- Need and Benefits Enhance reliability Reduce congestion on existing lines to allow for better system operation Provide opportunities for interconnection of renewable generation resources Meets the projected reliability, economic and policy needs identified in the Southwest Power Pool (SPP) Integrated Transmission 10-Year Plan.

5 Historical Storm Footprint O Neill Valentinen Ainsworth South Sioux City Inman Orchard Plainview Amelia Chambers Ewing Clearwater Neligh Pierce Hoskins Wayne Winside Norfolk Chadron Scottsbluff Ogallala Imperial Enders Wauneta Max Benkelman Hayes Center Hamlet Palisade Stratton Wallace Trenton Dickens North Platte Wellfeet Maywood Curtis McCook Valentinen Ainsworth Elgin Battle Creek Wisner Ansley Stanton Loup City Elba Cushing Fullerton Bellwood Abie Bartlett Silver Creek Callaway Madison Almeria Petersburg TaylorAshton Farwell David City Wahoo Burwell Ericson Shelby Howells Mason City Creston Litchfield Albion Lindsay Central City Leigh Sargent Humphrey Surprise Loma Oconto Boone Dwight Valparaiso Greeley St. Edward Cedar Chapman Platte Center Rapids Comstock North Loup Benedict Schuyler Bee Columbus Staplehurst Fremont Brady Eddyville Arnold Pleasanton Ravenna Scotia Belgrade Genoa westerville Wolbach Thayer Duncan Gothenburg Miller Poole Cotesfield Grand Island Seward Broken Bow Omaha Sumner Ansley Loup City Elba Cushing Fullerton Bradshaw Bellwood Abie Silver Creek Cozad Callaway Alda Ashton Farwell David City Wahoo Goehner Amherst York Aurora Shelby Mason City Ogallala North Platte Litchfield Swedeburg Lexington Shelton Wood River Central City Surprise Loma Milford Oconto Riverdale Dwight Valparaiso Plattsmouth Overton Gibbon Doniphan Giltner Beaver Crossing Maxwell Chapman Stockham Benedict Bee Ashland Staplehurst Raymond Louisville Morefield Brady Eddyville Odessa Kearney McCool Junction Pleasanton Ravenna Thayer Waverly Friend Murdock Murray Gothenburg Miller Poole Prosser Exeter Grand Island Seward Hansen Grafton Sumner Harvard Bradshaw Elmwood Weeping Water Eustis Cozad Alda Goehner Dorchester Amherst York Crete Lincoln Avoca Union Dickens Elwood Kenesaw Hastings Aurora Fairmont Lexington Shelton Juniata Wood River Inlan Saronville Sutton Milford Geneva Otoe Hallam Wallace Riverdale Overton Gibbon Doniphan Giltner Beaver Crossing Stockham Denton Unadilla Smithfield Bertrand Wellfeet Morefield Odessa Kearney McCool Junction Milligan Roca Wilber Cortland Stockville Minden Exeter Friend SyracuseDunbar Nebraska City Maywood Loomis Prosser Funk Axtel Roseland Hansen Glenvil Grafton Harvard Eustis Dorchester Crete Hickman Fairmont Douglas Talmage Paul Curtis Elwood Norman Kenesaw Hastings Strang Juniata De Witt Inlan Saronville Sutton Holdrege Holstein Pauline Edgar Swanton Geneva Hallam Imperial Peru Hayes Center Smithfield Bertrand Minden Milligan Wilber Cortland Adams Sterling Stockville Loomis Funk Axtel Roseland Western Johnson Enders Atlanta Wilcox Hildreth Blue Hill Glenvil Bruning Upland Bladen Norman Strang DavenportSwanton De Witt Pickrell Tecumseh Edgar Auburn Holdrege Holstein Pauline Daykin Wauneta Hamlet Holbrook Arapahoe Ragan Wilcox Hildreth Bruning Western Atlanta Blue Hill Elk Creek Mascot Upland Bladen Davenport Alexandria Filley Indianola Holbrook Arapahoe Lawrence Daykin Palisade RaganCampbell Beatrice Cambridge Alexandria Steinauer Mascot Oak Indianola Huntley Campbell Lawrence Cambridge Macon Holmesville Huntley Oak Macon Jansen Harbine Jansen Harbine Bartley Oxford Nelson Ellis Trenton Bartley Cowles Oxford Cowles Nelson Nora Ellis Nora McCook StamfordHendley Stamford Hebron Hebron Max Hendley Republician City Fairbury Fairbury Stratton Republician City Orleans Franklin Orleans Wilsonville Beaver City Franklin Red Cloud Beaver Danbury City Benkelman Lebanon Naponee Guide Rock Superior Maxwell Danbury Arnold Lebanon Wilsonville Broken Bow Almeria Taylor Sargent Comstock westerville Burwell Naponee North Loup Elgin Battle Creek Wisner Stanton Bartlett Madison Petersburg Ericson Howells Creston Albion Lindsay Leigh O Neill South Sioux City Humphrey Boone Plainview Inman Greeley Orchard St. Edward Platte Center Cedar Rapids Schuyler Amelia Ewing Pierce Wayne Clearwater Columbus Chambers Hoskins Winside Scotia Belgrade Neligh Genoa Wolbach Duncan Norfolk Cotesfield Guide Rock Superior Raymond Waverly Lincoln Denton Roca Hickman Swedeburg Pickrell Fremont Adams Filley Beatrice Holmesville Ashland Murdock Elmwood Avoca Unadilla Douglas Sterling Syra Tecumseh O L E Steinauer Ice Storm - Ice Storm Ice Storm Ice Storm - Ice Storm December Ice Storm July - Wind July Wind Storm Storm January Ice Storm

6 Southwest Power Pool Map

7 R- Timeline FALL/WINTER APRIL/MAY SEPTEMBER JANUARY First Round of Open Houses (Study Area Reviewed) Second Round of Open Houses (Corridors Reviewed) Third Round of Open Houses (Alternate Routes Reviewed) Public Hearing (Proposed Route Communicated) WINTER SRRING Final Route SRRING WINTER Engineering / Survey / Right-of-Way Acquisition Begins Engineering / Survey / Right-of-Way Acquisition Ends 2017 Construction Begins JANUARY SEPTEMBER Transmission Energized

8 Public Involvement Process STUDY AREA OPEN HOUSE overview need and benefits General routing study area Opportunity - A location for siting a transmission line that has minimal impacts. Constraint - Areas that may be more sensitive to impacts when siting transmission lines. Corridor - A strip of land to be evaluated for possible transmission routes. CORRIDOR OPEN HOUSE Corridor developed by identifying opportunities and sensitivities in the study area milestones Route - Centerline of a proposed transmission line between two points. Examples of ALTERNATIVE/PROPOSED ROUTES OPEN HOUSE Narrowed number of alternative/proposed routes Continue to solicit public comments to further validate data and appropriateness of alternative routes Sensitive Areas Agricultural concerns and development Airports Residential areas Environmental areas Cultural and historic YOU ARE HERE resources PUBLIC HEARING Present preferred route based on: Environmental and land-use considerations Suitability for construction Public comment Cost Electric system performance Examples of Routing Criteria Proximity to residences Land impacts Use of section or half-section lines

9 Sample Routing Process 1. Example of a Study Area 2. Example of Corridors Study Area Study Area Northville Northville New New Northville Study Area Study Area Boundary New New Northville Study Area Study Area Boundary Study Area Boundary Study Area Boundary Old Old Old Southtown Southtown Old Southtown Southtown PUBLIC YOU ARE HERE Study Area INPUT 3. Example of Alternative Routes 4. Example of a Final Route Northville Study Area New New Northville Study Area Study Area Boundary New New Northville Study Area Study Area Boundary Study Area Boundary Study Area Boundary Old Old Old Southtown Old Southtown Southtown

10 Routing Criteria Thedford to Western 345 kv Transmission Line Proximity to Occupied Residences Proximity to Towns/ Villages Proximity to Other Amenities Land Use Criteria Other Land Use Environmental Criteria Engineering and Construction Number less than 300 ft. Number over 300 ft. & less than 500 ft. Number over 500 ft. & less than 0.25 mile Number less than or equal to 0.25 mile Number over 0.25 mile & less than or equal to 0.5 mile Number over 0.5 mile & less than 1 mile Number of churches within 500 ft. Number of schools within 0.25 mile Number of cemeteries within 500 ft. Public use airports (landing strip > 3200 ft.) within 1.5 miles Public use airports (landing strip < 3200 ft.) within 1.25 miles Private FAA registered airports within 1.25 miles Private non-faa registered airports within 0.5 mile Wellheads within ROW of apparent centerline Number of other buildings within ROW Proximity to platted development Length adjacent to platted development (ft.) Irrigated cropland crossed (acres in ROW) Pasture/rangeland crossed (acres in ROW) Dry land crops crossed (acres in ROW) Number of center pivot conflicts Cultivated field bisections Number of parcels crossed by ROW Number of land owners affected by ROW Threatened and endangered plant habitat within ROW (acres) Wetland/jurisdictional water crossed (acres) Recorded conservation easements crossed (ft.) Trees within ROW (acres) Shelterbelt within ROW (acres) Number of known cultural resources within 500 ft. (recorded only) Number of river crossings Number of named stream crossings Preliminary whooping crane stop over habitat (acres within 1 mile of route centerline) Tern and plover habitat (acres within 0.25 mile of route centerline) Sandhills Scenic Byway crossed (#) Sandhills Scenic Byway paralleled (miles) Distance of floodplain crossing (ft.) Miles of Sandhills crossed Number of heavy angles (greater than 30 degrees) Length (miles) Cost (millions of dollars) Subtransmission line (69 and 34.5 kv) relocation (ft.) Number of railroads crossed Length of railroads paralleled (ft.) Number state highways crossed Number US highways crossed Interstate highway crossing Number major pipelines crossed Length of major pipelines paralleled (within ROW) Number of existing 230 kv transmission line crossings Number of existing 115 kv transmission line crossings Number of existing subtransmission line (69 or 34.5 kv) crossings Length of existing transmission parallel <500 (ft.) Number of communication towers within 0.25 mile Existing access for construction and operation (miles) * Accurate data not available at this time Preferred Route - C (GREEN) Alternative Route - D (MAGENTA) Alternative Route - E (YELLOW) * * * $184,000,000 $181,000,000 $193,000, * * * * * *

11 Routing Criteria Preferred Route - A (GREEN) Alternative Route - B (ORANGE) Number less than 300 ft. 1 3 Number over 300 ft. & less than 500 ft. 6 3 Number over 500 ft. & less than 0.25 mile Number less than or equal to 0.25 mile 2 1 Number over 0.25 mile & less than or equal to 0.5 mile 0 0 Number over 0.5 mile & less than 1 mile 0 1 Number of churches within 500 ft. 0 1 Number of schools within 0.25 mile 0 0 Number of cemeteries within 500 ft. 0 0 Public use airports (landing strip > 3200 ft.) within 1.5 miles 0 0 Public use airports (landing strip < 3200 ft.) within 1.25 miles 0 0 Private FAA registered airports within 1.25 miles 1 0 Private non-faa registered airports within 0.5 mile 1 0 Wellheads within ROW of apparent centerline 9 9 Number of other buildings within ROW 5 4 Proximity to platted development 0 0 Length adjacent to platted development (ft.) 0 0 Irrigated cropland crossed (acres in ROW) Pasture/rangeland crossed (acres in ROW) Dry land crops crossed (acres in ROW) Number of center pivot conflicts 1 1 Cultivated field bisections 2 2 Number of parcels crossed by ROW Number of land owners affected by ROW Threatened and endangered plant habitat within ROW (acres) 0 0 Wetland/jurisdictional water crossed (acres) Recorded conservation easements crossed (ft.) Trees within ROW (acres) Shelterbelt within ROW (acres) 7 6 Number of known cultural resources within 500 ft. (recorded only) 5 3 Number of river crossings 5 4 Number of named stream crossings 1 1 Preliminary whooping crane stop over habitat (acres within 1 mile of route centerline) Tern and plover habitat (acres within 0.25 mile of route centerline) Sandhills Scenic Byway crossed (#) 2 2 Sandhills Scenic Byway paralleled (miles) 0 0 Distance of floodplain crossing (ft.) * * Miles of Sandhills crossed Number of heavy angles (greater than 30 degrees) Length (miles) Cost (millions of dollars) $144,000,000 $157,000,000 Subtransmission line (69 and 34.5 kv) relocation (ft.) 0 0 Number of railroads crossed Length of railroads paralleled (ft.) 0 0 Number state highways crossed 4 4 Number US highways crossed 5 2 Interstate highway crossing 1 1 Number major pipelines crossed * * Length of major pipelines paralleled (within ROW) * * Number of existing 230 kv transmission line crossings 2 2 Number of existing 115 kv transmission line crossings 3 1 Number of existing subtransmission line (69 or 34.5 kv) crossings 7 3 Length of existing transmission parallel <500 (ft.) 0 0 Number of communication towers within 0.25 mile 3 0 Existing access for construction and operation (miles) Gerald Gentleman Station to Thedford Proximity to Occupied Residences Proximity to Towns/ Villages Proximity to Other Amenities Land Use Criteria Other Land Use Environmental Criteria Engineering and Construction * Accurate data not available at this time

12 Environmental Resources American Burying Beetle Western Prairie Fringed Orchid Blowout Penstemon Whooping Crane Environmental resources are evaluated as part of the route selection process and may include: Agricultural lands Recreational areas Water resources (lakes, streams, wetlands and floodplains) Sensitive, threatened and endangered species Wildlife habitat areas Cultural and historical resources Visual resources NPPD coordinates with Federal, State and Local agencies and organizations such as: Federal Aviation Administration U.S. Fish and Wildlife Service U.S. Army Corps of Engineers Nebraska Game and Parks Commission Nebraska Department of Roads Natural Resource Districts Nebraska Historical Society Local Airport Authorities Private Non-Government Organizations Nebraska Department of Environmental Quality

13 Tell Us What You Know Helpful information for identifying constraints and opportunities: Residences Grain bins & out buildings Planned (permitted) housing units Platted subdivisions Well locations Gravity flow irrigation & flow direction Terraces & drain tiles Underground facilities Future land-use Cemeteries, churches & schools Commercial & industrial development Communication towers Cultural & historical resources Environmental areas Planned pivots & water permits

14 Siting Area Criteria used to determine substation siting area: Criteria that will be used to determine final substation location: Within general proximity to Cherry County and Western 345 kv transmission line Minimize the need for additional transmission lines to connect substations Constructable sites located within area Road access Topography Habitat/Environmental concerns Ability to route transmission lines into substation Existing utilities/structures Current land use Final substation location Locations outside communities These and additional criteria will be carried forward into the substation siting process. What other criteria should NPPD consider? Which is most important to you?

15 Typical Facility

16 Building Relationships Building positive, long-term relationships Minimizing impact through public input Working together to build a partnership

17 Right-of-Way Activities We strive to build positive, long-term relationships with landowners and tenants Right-of-Entry Permit - provide access for: Environmental assessments Appraisal work Survey activities Cultural and historical resource assessments Easement Acquisition Compensation Terms and conditions Right-of-Way width Post Construction Construction damage compensation Property restoration

18 Typical Rightof-Way Width Typical examples of the right-of-way required for a 345kV electric transmission line

19 Easement Compensation Determination of land value Land Market Valuations Independent appraisers will conduct real estate market study and analysis Market study will be focused on the area of the proposed line route Market study and analysis based on comparable sales and the highest and best use of property Each parcel will be viewed and its value determined Easement Compensation After land valuations are completed, and prior to actual negotiations, NPPD will establish easement payment amounts for each parcel based on: Land valuation Limited rights obtained by the District Impacts of structures on farming or land operations Any other special considerations Based on past NPPD projects, a payment in the range of 80% of market value of the land area within the boundaries of the right-ofway area is customary.

20 Easement Compensation Easement Compensation 80% of the fee value of the easement area. Structure Payment Single Pole Equal to the fee of 1/2 acre of property per structure Lattice Tower Equal to the fee of one (1) acre of property per structure Payment for any special consideration on a case-by-case basis Contruction Damages In addition to the easement payment, the property owner or tenant will be compensated for any damages to crops, fences or other property that may occur during construction or when maintenance is required in the future.

21 Stabilization and Restoration Approach Landowner input and experience Consulting with agencies having Sandhills expertise: - UNL - NRD - NRCS - NDOR - NPPD Water Systems Staff - Restoration Contractors Minimize construction impact - Effects of routing and siting - Investigate alternative design / engineering - Construction practices / equipment - Livestock control around structures Develop Restoration Plan based on best practices Tell us your experience What particular restoration methods / practices have you found to be effective or not effective? Mulch Matting Seeding Compost / Manure Products / Techniques Cattle control near structures

22 Engineering Typical Structure Types Typical Structure Locations Construction Process Line Capabilities

23 Typical 345 kv Single Circuit Structure Types Lattice Tower Single Pole 7'-0" 24'-0" 25'-6" 24'-0" 39'-0" 33' 29'-0" 26'-6" 30' 30' 130' Typical 150'-0" (TYPICAL) Property Boundary At Half Section Line Property Boundary At Half Section Line Property Line 3' 35' Typical Property Line 5'-0"

24 Typical Structure Locations SECTION LINE ROAD TRANSMISSION LINE CENTER LINE EXISTING PIVOT FUTURE PIVOT FARM BUILDINGS OR RESIDENCE HALF SECTION LINE LATERAL IRRIGATION TOWER Location of line along half section maximizes avoidance of homes and farm buildings located along typical section line roads. SECTION LINE ROAD Structure design and location provides free movement of existing pivot system. CENTER PIVOT SYSTEM TRANSMISSION LINE RIGHT OF WAY APPROXIMATE STRUCTURE LOCATIONS HALF SECTION LINE

25 Line Capabilities 345 kv 140 ft. A typical 345,000 - volt transmission line has the capacity of: Three 230,000 - volt lines, Ten 115,000 - volt transmission lines, Twenty 69,000 - volt lines 50 ft. 230 kv 80 ft. 20 ft. 115 kv 60 ft. 15 ft. 69 kv 50 ft.

26 Construction Process

27 Typical Foundations Drilled Piers Material: Concrete, Steel Rebar, Anchor Bolts / Stub Angle Equipment: Digger, Concrete and Dump Trucks, Crane Helical Piers Material: Prefabricated Steel Piers and Base Plates Equipment: Modified excavator, small crane Used on all structure types Used for Lattice Towers (required for Long Span Single Poles).

28 Exit Poll Results Most Important Issue 40.0% 35.0% 35.5% 33.3% 30.0% 25.0% Percentage 20.0% 15.0% 10.0% 5.0% 10.4% 6.0% 3.8% 3.8% 3.5% 1.9% 1.9% 0.0% Proximity to residences 2. Minimizing impact to ranch farm operations 3. Restoration of disturbed areas 4. Minimize disturbances 5. Wetlands 6. Access 7. Scenic views and landscapes 8. Windbreaks and shelter belts 9. Sensitive and endangered species/habitats