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Agenda
Introductions Recap
– About Advisory Working Groups (AWG)– Project Overview & Update– AWG Recap
Tonight’s topics– Noise & Safety– Project Benefits (short and long term)– Design Factors
Planning for next AWG
2
Tonight’s Speakers
Bob De Meyere – Cricket Valley Energy (CVE)– Project Manager – Cricket Valley Energy Center
Ted Barten – Epsilon Associates, Inc. – Project environmental consultant
Nora Madonick – Arch Street Communications– Public information and outreach
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What is an Advisory Working Group (AWG)?
Informal, unofficial opportunities for the public and project experts to share information and ideas
Not required by the public process – additional outreach by Cricket Valley Energy – comments are not part of the official public record
No specialized knowledge is needed – technical information will be presented in plain language
If you are attending as a member of an organization, please share what you learn tonight with your members
Announced via website, postcards, email blast, calendar listing, posters, advertising, posting on town websites
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AWGs are self-determined.
The group:- Chose the topics for tonight’s meeting- Requested use of microphones as needed- Requested longer question/answer period
All meeting materials will be posted on the web following tonight’s meeting
Please visit cricketvalleytransmission.com for updates and to sign up for email notifications
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Recap: Project Overview
Cricket Valley Energy is a 1000 MW energy generation facility in Dover, NY
- Fully approved and permitted
- Completed State Environmental Quality Review (SEQR) process
- Restoration of abandoned industrial site
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Recap: New York Independent System Operator Requirement
CVE has been required by NYISO to increase transmission/transfer capacity, redundancy, and operational capacities by:- Funding and installing 14.6-mile transmission line in
existing right-of-way between CVE in Dover and Con Edison substation in Pleasant Valley
- Reconductoring 3.4-mile segment of existing line between CVE substation and the NY/CT border
- Upgrading Pleasant Valley substation (within existing footprint) security/communication infrastructure
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NOT part of any of the following transmission line projects: NY Transco Edic to Pleasant Valley; NEXTERA New Scotland to Pleasant Valley; North American Transmission; or Boundless Energy Transmission
AWG Recap
Visual Impact- The CVE team identified an option to reduce the
proposed pole height by as much as 40 ft by using H-frame poles, replacing monopoles in certain key locations, and modifying the original design of the monopoles
- Design changes have been submitted for approval to Con Edison
Underground Construction− Based on the significant environmental and other
potential impacts, the underground option failed to satisfy the project design requirements set forth by Con Edison and NYISO
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Noise & Safety
Tonight we will cover:
Noise:
- Construction Phase
- Operational Phase
Safety:
- Standards
- Clearances & Aviation
10
Noise: Construction Phase
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Short intervals of work along the right-of-way over a total schedule of 24 months. Short-term sound may include:− Standard construction equipment, such as drill rigs, rough
terrain cranes, cable pulling rigs− Helicopters (heavy lift and light duty)− Trucks to deliver materials, bring workers to and from
active construction areas The construction process will not include:
− Use of explosives/blasting− Use of rock breaking/trenching equipment
Restrictions will be in place to limit noise-producing construction activity to standard daylight working hours
Noise: Operational Phase
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Corona effect− Phenomenon associated with all energized electrical
devices, including high-voltage transmission lines− Air close to the conductors may become ionized and
generate some sound energy (humming, crackling)− Most audible during low ambient noise and high
humidity. Least audible (masked) when raining steadily− CVE will use “bundled conductors” to minimize corona
effect
Con Edison line inspection and right-of-way maintenance− Consistent with current practices/policies
Safety: Standards
CVE will address all considerations in order to meet safety standards, including:
- Construction: Foundations, cable weight and tension, wind loads, ice loads, design
- Monopoles: Safety record, resistance to strain, ice/snow loads, and insect/bird damage
- Operational: Grounding, pole type, distance between equipment and conductors, distance between nearby structures and conductors
High-voltage transmission lines have a strong reliability record
13
Safety: Clearances and Aviation
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Clearances- Vegetation and trees, if not properly maintained, can be
a source of outages (including the 2003 blackout)- Clearing requirements will be determined by applicable
wire security zone standards
Aviation Safety- Structure heights, locations, and lighting in accordance
with FAA requirements will ensure safe operation of the transmission line in Sky Acres Airport area
Benefits (Short & Long Term)
Tonight we will cover:
Labor and workforce
Sourcing local business
Low impact design
Restoration of impacted areas
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Labor and Workforce
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Direct and indirect positive impacts to regional economy of over $1 billion over 20 years
Power Plant − Up to 750 direct construction jobs – averaging around 300 per year
for the estimated 3 year construction period (Approx. $147 million)− More than 1500 indirect, and induced jobs− 56 direct, indirect, and induced jobs supporting operations (post
construction phase)
Transmission Line− 60 to 80 direct construction jobs − Up to 80 additional Indirect and induced jobs in support of project
Sourcing Local Business
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Indirect and induced employment− Local purchases during construction
Materials and services For construction work force (meals, fuel, incidentals, lodging,
etc.)
− Local services to support construction and operation Sky Acres Airport and other sites to support construction
Tax Revenue to State, County, Towns, and School district
Low Impact Design
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Minimal footprint− Proposed transmission line will be constructed entirely
within the existing right-of-way− Existing Con Edison right-of-way is presently more
than 90% free of tree growth− For safety and reliability, some trees along the
southern edge of the right-of-way will be cleared in accordance with industry standard safety requirements (less than 8% of the total right-of-way area)
− Construction to be limited Pole locations – 4-5 per mile
Low Impact Design (continued)
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Construction measures− Protective measures such as hay bale and silt fence
barriers between the resource areas and work areas to prevent inadvertent impacts to wetlands and streams
− Highly-trained construction monitors to oversee work; including particular attention to sensitive areas to prevent any damage to wetlands and streams along the right-of-way
− Protection of threatened and endangered species habitats per DEC approval
− Physical avoidance, time of year restrictions − Use of rock anchors in most locations− Selective use of helicopters to set poles
Restoration of Impacted Areas
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Wetland restoration plan and remediation at CVE site in Dover
Transmission line – restoration of work areas
Natural buffers− Landscaping to screen the Pleasant Valley substation,
along Rt. 44− Natural tree buffer at CVE site in Dover
Design Factors
Tonight we will cover:
Revised pole heights
Insulated cables
Ice and wind loads that can affect the line
23
Revised Pole Heights
Reviewed technical requirements‒ National Electric Safety Code (NESC)‒ Con Edison‒ New York State Department of Public Service (DPS)
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Revised Pole Heights
Key Considerations‒ Con Edison phase-to-phase electrical clearance: 15
ft. minimum (displaced conductors)‒ Con Edison phase-to-ground electrical clearance: 9
ft. minimum (displaced conductors)‒ 35 foot electrical clearance to ground under
maximum operating temperature of 180ºC (356ºF)‒ EMF requirements
Distance to ground for EMF analysis: determined under winter normal temperature of 95ºC (203ºF)
For example: the span between CV-07 to CV-08 is 44 ft EMF: Electric field < 1.6kV/m at edge of right-of-way EMF: Magnetic field < 200 mG at edge of right-of-way
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Why not use insulated cables?
Technically impractical for overhead high voltage transmission lines
‒ Insulated cables would be 8 -10 inches in diameter changing the weight from 2.5 lbs/ft to 44.7 lbs/ft
‒ Would require 3 cables for each phase – 9 cables total
‒ Requires cable bridge supports, abutments and additional wires to support the cable
‒ More massive and intrusive than overhead bare cables
26
What are the ice and wind loads?
Designs exceed NESC Code minimums
100-year wind loading of 25 psf wind pressure (100 mph) wind
100-year ice loading of 1” radial ice with a concurrent 8 psf (56 mph) wind
Unbalanced ½ inch ice
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