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Advisory Working Groups Town of LaGrange December 15, 2014
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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
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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 3
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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 4
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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 5
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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 6
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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 7 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
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Project Status 8
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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 9
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Noise & Safety Tonight we will cover: Noise: Construction Phase Operational Phase Safety: Standards Clearances & Aviation 10
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Noise: Construction Phase 11 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
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Noise: Operational Phase 12 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
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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
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Safety: Clearances and Aviation 14 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
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QUESTIONS 15
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Benefits (Short & Long Term) Tonight we will cover: Labor and workforce Sourcing local business Low impact design Restoration of impacted areas 16
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Labor and Workforce 17 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
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Sourcing Local Business 18 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
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Low Impact Design 19 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
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Low Impact Design (continued) 20 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
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Restoration of Impacted Areas 21 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
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QUESTIONS 22
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Design Factors Tonight we will cover: Revised pole heights Insulated cables Ice and wind loads that can affect the line 23
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Revised Pole Heights Reviewed technical requirements ‒ National Electric Safety Code (NESC) ‒ Con Edison ‒ New York State Department of Public Service (DPS) 24
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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 25
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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
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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 27
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QUESTIONS 28
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TOPICS FOR OUR NEXT ADVISORY WORKING GROUP 29
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