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1 MONDAY , SEPTEMBER 25 TH , 2017 CHAMPLAIN HUDSON POWER EXPRESS ROCKLAND COUNTY –ROUTE 9W SUBSURFACE UTILITY ENGINEERING OVERVIEW
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MONDAY, SEPTEMBER 25TH, 2017
CHAMPLAIN HUDSON POWER EXPRESS
ROCKLAND COUNTY – ROUTE 9WSUBSURFACE UTILITY ENGINEERING OVERVIEW
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Attendee Introductions
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Meeting Agenda
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Here is what we heard:
TDI listened to the various concerns expressed by Rockland County, and worked to address these concerns.
Listening to Rockland County concerns….
• Move route out of recreational areas
• Move route away from waterfront
• Avoid sensitive areas
• Involve Stakeholders
• Consider direct benefits that will meet specific community needs
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CHPE – Project Overview
• In-development since 2010 and in-service by 2022
• 1,000MW HVdc transmission line buried underground and underwater for 337 miles from the U.S.-Canada border to NYC
• U.S. based project, with 34 mile Canadian leg built by Hydro-Québec
• World-class OEM and Contractors
• 100% private financing
• Completed regulatory process:‒ New York State permit (“Article VII”)
obtained‒ Fully permitted Q2 2015
• Local labor and Union construction www.chpexpress.com
Champlain Hudson Power Express (“CHPE”)
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• Departs from certified route in the bed of the Hudson River at milepost 295.4
• HDD from Hudson River onto TILCON’s property, including an ~800 foot excavation to Park Rd.
• Park Rd (owned by the Town of Stony Point) ~1,700 foot excavation to 9W
• Follows Route 9W south through and past Stony Point, Haverstraw (T), West Haverstraw (V), Haverstraw (V) and Clarkstown (7 miles of alternate route length)
• Rejoins certified route on 9W in Clarkstown
• HDD to Hudson River from Palisades Interstate Park Commission’s property
Total upland route length in Rockland County is ~8 miles
Route 9W Alternative
TILCON property
Route 9W
Hook Mountain State Park /
Rockland Lake State Park Golf
Rejoins original route on 9W
Article VII route on CSX
A combination of community concerns have led to an improved alternate
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• TDI evaluated 15 different alternate routes through Rockland County prior to establishing 9W as a preferred alternative
• Alternatives in Westchester and Rockland were reviewed, as well as paths that would avoid the busiest portions of Stony Point’s downtown area
• Pursuing an in-water path is prohibited due to environmental exclusion for endangered species (sturgeon) in Haverstraw Bay
15 Various Alternatives Considered
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9W Longitudinal Installation
• Direct burial of cable in roadway bed via cable conduit
• Location of cables within the roadway ROW • Installation under a travel lane or two-way
left-turn lane (TWLTL)
Street View along US Route 9W at Stony Point Alternative MP 2.9
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SUE (Survey and Digital Mapping)
• Above-Grade infrastructure (utility poles, transformers, culverts, roadway structures, water vaults, etc.)
• Subsurface utility infrastructure (electrical, natural gas, fiber optic, communications, water, sewer, etc.)
• Maximum incremental length of cable on reel
• Frequency of splices/vaults
• Cable bend radius (vertical and horizontal)
Geotechnical:
• Characteristics of subsurface soil/rock conditions – installation schedule
• Thermal resistivity of soil at various depths – cable design and placement
Confirming Installation Requirements The key to determining installation requirements and schedule is understanding currentsubsurface conditions via a Subsurface Utility Investigation (SUE) and Geotechnical BoringProgram
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Subsurface Utility Engineering
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• Providing Utility design and Survey solutions for 70 years.• Multiple Utility Service Contracts-O&R, CHGE, Nat Grid, NYSEG,
Iroquois, Cricket Valley• SUE for 32 yearsSupporting Team:• Thomas Gleason performing Utility work for over 60 years• Badger Daylighting operating for 25 years• Singer Utility Engineering assisted in writing the ASCE 38-02
Standard
Subsurface Utility Engineering
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• Haverstraw, New Main St/US Route 9W – O&R Utilities
• Haverstraw, US Route 9W/Rte. 202 to New Main St – O&R Utilities
• Stony Point, CR108 – O&R Utilities
• Clarkstown, West Nyack-NYSPRHP various site locations
• Nyack, US Route 9W-Hudson River Health Care
• Clarkstown, Gasland
• Montebello, 3-miles, O&R Electric
• Newburgh/New Windsor, 8-mi. CHG&E Gas
Chazen Companies Experience in Rockland County
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Aerial Survey & Field Survey Component• Control targets for Aerial
Survey.
• Aerial flight followed up with ground Field Survey to augment data where necessary.
• Crew locating R.O.W. monuments for mapping US Route 9W limitations
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SUE Designating Standards
• QUALITY LEVEL “D” (QL D) - INFORMATION DERIVED FROM EXISTING RECORDS AND/OR ORAL RECOLLECTIONS.
• QUALITY LEVEL “C” (QL C) - INDICATES INFORMATION OBTAINED BY SURVEYING AND MAPPING VISIBLE ABOVE-GROUND OR AT-GRADE UTILITY FEATURES AND BY USING BEST PRACTICES PROFESSIONAL JUDGMENT IN COORELATING WITH QL D INFORMATION.
• QUALITY LEVEL “B” (QL B) - INFORMATION OBTAINED THROUGH APPLICATION OF APPROPRIATE SURFACE GEOPHYSICAL METHODS TO DETERMINE THE EXISTENCE AND APPROXIMATE HORIZONTAL POSITIONING OF SUBSURFACE UTILITIES.
• QUAILTY LEVEL “A” (QL A) - THE PRECISE HORIZONTAL AND VERTICAL LOCATION OF UTILITIES OBTAINED BY THE ACTUAL EXPOSURE, MEASUREMENT, ANS SURVEY OF SUBSURFACE UTILITIES, USUALLY NOTED AT A SPECIFIC POINT OR POINTS.
ASCE 38-02 Utility Designating Standards
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• WZTC-Single lane closures, driveways open, variable length lane closures
• Designating and marking out utilities, GPS same-day survey to minimize repeat closures
• Pot-holing at identified critical routing locations
• 2 trucks to expedite operations
• Backfill according to NYSDOT requirements
• Final pavement restoration prior to winter conditions
QLB Data Gathering QLA Data Gathering
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QLB Utility Designating
Work Zone Traffic Control Lane Closure
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Work Zone Traffic Control
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Work Zone Traffic Control
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Work Zone Traffic Control
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• Each member of the Chazen Team has a company-wide Safety policy in force
• Employees have 10-40 hr OSHA
• Project Safety briefings will carry thru the entire project
• All Team members have worked under NYSDOT Safety requirements for many years.
• All Team members have Utility company term contracts requiring D&A testing and adherence to client Safety policies
• Chazen Safety record stands at 0 work-site related accidents
Community Safety Focus
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Typical Site:
The Designating Field Sketch:
Survey Results
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Route 9W SUE Site
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Utility Locating Equipment
Proud to be Employee Owned
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RD8000 Utility Locator
Proud to be Employee Owned
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Fisher TW-6 EM Metal-Detector
Proud to be Employee Owned
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Duct Rodder & Sondes
Proud to be Employee Owned
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Proud to be Employee Owned
Ground Penetrating Radar
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QLA Utility Investigation“Pot-holing” at selected QLB locations to visually ascertain depth and utility characteristics for routing conflict resolution.
QLA – Pot-Holing Investigation
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SUE - Recap
QLB & QLA effort:• First priority – SAFETY of workers, traffic,
pedestrians• 2nd Priority – access to Businesses and
Residences accessible at all times• Quality data gathering to assist final Design
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• Boring locations will be located off roadways when possible, or on shoulders
• For coordination, Boring Plan will be shared for reference prior to commencement of effort
• Traffic will likely be diverted, slowed (not stopped) when work is in close proximity to traffic lanes
• Safe zone will be laid out using vehicles and safety cones
• Drill rig will be set in place and boring operations will commence
• One hole per boring location, which will be back-filled with grout upon completion
Geotechnical Boring Program
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Geotechnical Boring Program – Sample Log
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Next Steps
• Answer any questions
• Confirm schedule
• Confirm form of notification on SUE work and progress
