astoria station public input hearing presentation...1. hoot lake plant is retiring in may 2021....
TRANSCRIPT
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Deubrook Elementary School Gymnasium
Toronto, South Dakota
November 27th, 2017
Docket: EL 17-0421
ASTORIA STATION PUBLIC INPUT HEARING
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• Bill Swanson, Manager, Supply Engineering• Astoria Station Project Manager
• Mark Thoma, Manager, Environmental Services• Astoria Station Permitting Manager
PRESENTERS
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• HDR
• Air Permit and Site Permit Support
• Sargent & Lundy• Preliminary Engineering
• First District Association of Local Governments
• Social & Economic Impact Study
• Banner Engineering
• Groundwater Evaluation
• Power Engineers• Generation-Tie Line Design
CONSULTANTS SUPPORTING PROJECT
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• Who we are
• Project need and location
• Project components and schedule
• Community impacts
• Environmental review
AGENDA
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WHO WE ARE
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WHO WE SERVE
• 70,000 Square Miles
• 131,551 Customers
• 422 Communities
• Avg. population ≈400
• 796 Employees
• 472 Minnesota
• 205 North Dakota
• 119 South Dakota
• About 800 MW owned
generation
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80%
10%
9%
1%
53%
4%
31%
12%
59%
16%
24%
1%
2001 2011 2021
HOW WE CREATE ELECTRICITY
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PROJECT NEED AND LOCATION
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Astoria Station is a needed project for OTP. Three factors:
1. Hoot Lake Plant is retiring in May 2021.
• Hoot Lake is a 140 MW coal-fired facility in Fergus Falls, MN.
2. We have expiring capacity contracts in approximately the same timeframe.
3. We project future load growth.
PROJECT NEED & KEY HISTORY
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ASTORIA, SD - LOCATION
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Intersection of new 345 kV
transmission and major
natural gas pipeline is key to
SD site advantage
Northern Border
Natural Gas Line
Project Site near Astoria, SD
BSSB – Big Stone
South to
Brookings 345 kV
CAPX
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PROJECT SITE OVERVIEW
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N
28
311
OTP Property
Astoria
482nd Ave
345 kV Line
Existing Northern
Border Natural Gas
Pipeline
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PROJECT COMPONENTS AND SCHEDULE
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• Astoria Station will be an approximate 250 MW simple-cycle natural gas combustion turbine.
• The peaking plant will serve during periods of high demand or when other generating sources are not available.
• Cost ~$165M. We expect the station to be online in 2021.
ASTORIA STATION
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• Resources Needed: Water, Air, Natural Gas
• Major Components:
• Inlet Air Filter
• Air Compressor Section
• Gas Combustion Chamber
• Power Turbine
• Electrical Generator
• Generator Step Up Transformer
SIMPLE CYCLE TURBINE
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PLANT GENERAL ARRANGEMENT
Side View
45° Angle
View
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• Less than ½ mile to interconnect to BSSB 345-kV transmission system
• 3-5 new structures
• OTP’s property connects to the preliminary location identified for the BSSB switching station
GEN-TIE LINE
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• Will connect into the Northern Border Pipeline on Otter Tail property
• < 1,000’ pipe from meter station to turbine
• 10” diameter pipe
NATURAL GAS PIPING
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OTP Property
Existing Northern
Border Pipeline
N
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• Onsite well is proposed
• < 1,500’ long, 5” diameter pipe to storage tank
• Proposed capacity of 100 gpm
• Above ground 350,000 gallon storage tank
• There will be many days or months when process water is not required
WATER LINE
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Well
OTP Property
Existing Northern
Border Pipeline482nd Ave
N
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PROJECT SCHEDULE
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COMMUNITY IMPACTS
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Date Number of Workers Onsite
Ground Breaking and Month 1 20
Month 2 30
Month 3 30
Month 4 40
Month 5 50
Month 6 60
Month 7 60
Month 8 70
Month 9 70
Month 10 70
Month 11 60
Month 12 40
Month 13 30
CONSTRUCTION WORKFORCE
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• Most likely heavy haul route will be East along Hwy 28 from I29 to 482nd
Ave.
• Road agreements and heavy haul permits will be reviewed with the Township/County.
• Necessary roadway improvements will be made to 482nd Ave.
TRANSPORTATION
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• Astoria Station will pay property tax totaling approximately $3 million within the first five years of operation, then approximately $1 million each subsequent year.
• These tax payments will get distributed between the DeubrookSchool District, Deuel County, Scandinavia Township, and the Water and Fire District.
• Astoria Station will:
• Create construction jobs that equates to approximately $30 million in labor.
• Require three to five full-time employees to operate.
ECONOMIC IMPACTS
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Representatives From:
• Deuel County Commission
• Brookings County Commission
• Deubrook School District 05-6
• Deuel School District 19-4
• Town of Astoria
• Town of Brandt
• Town of Toronto
• Otter Tail Power Company
LOCAL REVIEW COMMITTEE
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Areas to Study:• Housing Supplies
• Educational Facilities and Manpower
• Water Supply and Distribution
• Wastewater Treatment and Collection
• Solid Waste Disposal and Collection
• Law Enforcement
• Transportation
• Fire Protection
• Health
• Recreation
• Government
• Energy
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ENVIRONMENTAL REVIEW
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ENVIRONMENTAL REVIEW
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Impacts Studied Included:
• Aquatic Ecosystems: No wetland impacts are anticipated
• Cultural Resources: No historic properties on the site
• Terrestrial Ecosystems: No known threatened, endangered, or rare species
• Air Quality
• Water Quality
• Sound
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0
0.5
1
1.5
2
2.5
3
3.5
4
Astoria Station Modern Coal Plant Regional Fossil Average
AIR QUALITY: SULFUR DIOXIDE (SO2) LBS/MWH
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0
0.5
1
1.5
2
2.5
Astoria Station Modern Coal Plant Regional Fossil Average
AIR QUALITY: NITROGEN OXIDE (NOX) LBS/MWH
28
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0
500
1000
1500
2000
2500
Astoria Station Modern Coal Plant Regional Fossil Average
AIR QUALITY: CARBON DIOXIDE (CO2) LBS/MWH
29
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WATER QUALITY
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Water Appropriation:
• Test well installed into the Altamont aquifer
• Well depth of 679 feet; reports on file with DENR for other wells within five miles are into shallower aquifers
Surface Water and Stormwater:
• Existing surface water drainage patterns will not be altered
• Stormwater from site operations will be directed into a stormwater retention pond
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SOUND COMPARISONS
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20
36
50
60 60
70
84
120
0
20
40
60
80
100
120
140
Whisper Rural NightSetting
Office Astoria Stationfrom 482nd
Ave
NormalConversation
PassengerCar
Tractor Jet Plane atTakeoff
dBA
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Thank You!
For the latest Project information:
otpco.com/AstoriaStation