The Northern Pass Project Visual Simulations

The
Northern Pass
Transmission Project:
Visual Simulations

THE NORTHERN PASS
SM

Northern Pass • PO Box 330 • 780 North Commercial Street • Manchester, NH 03105-0330 • 800-286-7305 • www.northernpass.us MAY 2011_v2

Visual Simulations
THE NORTHERN PASS
SM

The Northern Pass Transmission Project

About the Visual Simulations Factors to Consider when Viewing the Visual Simulations
This booklet contains visual simulations of what The Northern Pass transmission line will look ➤ Weather conditions: Landworks takes photographs for the visual simulations on days when
like from locations where people would potentially see it from. They were produced by LandWorks, it’s not rainy, when they know they would be able to see the structures from the chosen vantage
a landscape architecture and planning firm out of Middlebury, VT, using sophisticated and point. The day could be overcast or crystal clear, which is reflective of the changeable weather
industry-accepted software and software methodologies. conditions in New Hampshire.
For each vantage point included in this booklet, we’ve provided a “before” image of what the view ➤ These are static views: Note that the view simulations are static images; the viewer is fixed on
looks like today, and visual simulations showing what the view would look like with the inclusion of the objects presented in the photograph. This is not reflective of how you would experience these
The Northern Pass transmission line using two typical industry designs: a) lattice transmission struc- views in nature, when you might be turning your head, driving, walking along a trail, etc.
tures; and b) monopole transmission structures. ➤ Vantage points: Visual simulations present a sense of what the project will look like from one
Photographs were taken using a 50 to 55-milimeter lens, which registers similar to what the human specific location, at one point in time. If you were to go 50 feet in another direction, you might
eye sees. Because the eye acknowledges a 120- to 160-degree “cone of vision,” Landworks tends to not see the project at all, or you might see it more directly or in a different light.
add a little more to the image on the left and right sides to provide a more accurate, panoramic view.
Most Common Structure Heights for The Northern Pass
In LandWorks’ experience, these visual simulations tend to look very close to (or exactly the same as)
The anticipated height of most Northern Pass transmission structures is as follows:
what the project will actually look like from these vantage points once built.
➤ For the new right of way in the North Country, from the Canadian border to Groveton, NH,
The goal of the visual simulations is not to make the project look good or bad, but to provide an
the most common structure height will be 85 – 90 feet.
objective perspective and sampling of what the project will look like from as many different vantage
points as makes sense. Visual simulations typically focus on views from public vantage points rather ➤ In the existing right of way between Groveton and Franklin, which currently contains an existing
than from individual residences. transmission line, the most common structure height will be 80 – 95 feet.
➤ In the existing right of way between Franklin and Deerfield, which currently contains an existing
Determining the Structure Heights transmission line, the most common structure height will be somewhat taller, between 90 and
The National Electrical Safety Code requires a minimum height for transmission structures based 110 feet, because the right of way here is slightly narrower than in other sections of the route.
upon the line’s operating voltage. As a general rule, the wider a right of way the shorter a structure Taller structures are used along the route when necessary:
needed, to a point.
➤ To span larger rivers and roadways;
The majority of the preliminary preferred route for The Northern Pass uses transmission rights of
➤ To cross over other lines and structures;
way (ROW) that already exist. For the section of the route from the Canadian border to Lost Nation
➤ To account for changes in terrain being spanned by the line, and to maintain the clearances re-
substation in Groveton, NH, new ROW will need to be developed. These ROW are expected to be
quired by the National Electrical Safety Code between the transmission wires and the ground
about 150 feet wide (50 yards). A 150-foot ROW allows for the use of shorter structures for the
or other nearby objects; and
direct-current (DC) transmission line (approximately 85 – 90 feet tall).
➤ In select areas in the existing rights of way where the right of way is constrained and cannot be
For the remainder of the route, from the Lost Nation substation in the north to the Deerfield
expanded to a width necessary to allow for the use of shorter structures
substation in the south, the preferred route for The Northern Pass uses existing rights of way where
transmission lines already exist. Today, the majority of the existing transmission structures in these
rights of way are 45 to 75 feet tall. The majority of these existing lines operate at a voltage of 115 kV
alternating current (AC). The Northern Pass will construct lines that operate at voltages of +/-300 kV
DC and 345 kV AC. These higher voltages require greater height and separation for safety.

Visual Simulations 5/10/11
Northern Pass Transmission Project PRELIMINARY

Table of Contents

Location Map page 2
Burns Pond, Whitefield page 3
Catamount Pond, Allenstown page 5
Deerfield Town Hall, Deerfield page 7
Forest Lake Road, Whitefield page 9
Lakeshore Drive, Webster Lake, Franklin page 11
Oak Hill Fire Tower, Loudon page 13
The Rocks Estate, Bethlehem page 15
Tripoli Road, Woodstock page 17
Turtle Pond, Concord page 19
Veteran’s Memorial, Hill page 21
Weeks State Park, Lancaster page 23
West Road, Canterbury page 25

Prepared by LandWorks • 228 Maple St. Suite 32, Middlebury, Vermont • 802.388.3011 • www.landworksvt.com • info@landworksvt.com 1

Visual Simulation Location Map 5/10/11
PRELIMINARY

Weeks State Park, Lancaster
(
!

Forest Lake Road, Whitefield !
(
! Burns Pond, Whitefield
(

The Rocks Estate, Bethlehem !
(

Tripoli Road, Woodstock
(
!

Veteran's Memorial, Hill
(
! Legend
Lakeshore Drive, Webster Lake, Franklin (
! (
! Visual Simulation Location

Preferred Route
West Road, Canterbury
(
!
Oak Hill Fire Tower, Loudon NH State Boundary
(
!
(
!
Turtle Pond, Concord

Catamount Pond, Allenstown
(
!
(
!
Deerfield Town Hall, Deerfield
0 5 10 20
Miles [
2

Visual Simulation from Burns Pond, Whitefield 5/10/11

Today’s View

View Location Map Simulation Information
Transmission Line Proposed structure type: HVDC, horizontal tangent
Information
Height range of proposed transmission structures (visible): 90’ - 95’
Height range of existing transmission structures (visible): 43’ - 52’
Right of way width 265’, no additional width required
Photograph Information Date and time: 4/22/11; 1:15pm
Location: Burns Pond, Whitefield; facing South/ West 44.359˚ N, -71.635˚ W
Camera elevation above sea level: 1,123’ (342.3m)
Simulation viewing distance: 11” (27.9 cm) Focal length (35mm equivalent): 56mm
Weather conditions: Partly sunny
Technical Information Software: Nemetschek VectorWorks 2008; SketchUp Pro 7; Adobe Photoshop CS5
Digital elevation data source: USGS National Elevation Dataset 1/3 Arc-Second (NED 1/3)

Note:
Simulation is based upon a preliminary design. Exact structure height, location and color will be finalized during the detail design and
0’ 2000’ 4000’ permitting process.


Proposed structure type: HVDC horizontal tangent 5/10/11
PRELIMINARY
Simulation: New structure option -- Lattice

Simulation: New structure option -- Monopole

4

Visual Simulation from Catamount Pond, Allenstown 5/10/11

Today’s View

Transmission Line Proposed structure type: 345kV, vertical tangent
Information
Height range of proposed transmission structures (visible): None visible
Height range of existing transmission structures (visible): None visible
Location: Deerfield Rd, Catamount Pond, Allenstown; facing North/ East 44.169˚ N, -71.388˚ W
Camera elevation above sea level: 310’ (94.5m)
Weather conditions: Sunny

Note:
¬
«
28



5/10/11
PRELIMINARY
Simulation: New structure option -- Lattice or Monopole

Note: Maximum height of proposed
structures is below existing tree line and
hidden from this view.

Max. structure height

ight
Max. structure he

6

Visual Simulation from Deerfield Town Hall, Deerfield 5/10/11

Today’s View

View Location Map ¬
«
107
Simulation Information
Transmission Line Proposed structure type: 345kV, AC, vertical tangent
Information
Height range of proposed transmission structures (visible): 130’
Location: Deerfield Rd. at Town Hall, Deerfield; facing West 43.133˚ N, -71.243˚ W
Weather conditions: Sunny with some clouds
¬
«
43

Note:


Proposed structure type: 345kV, AC, vertical tangent 5/10/11
PRELIMINARY


8

Visual Simulation from Forest Lake Road, Whitefield 5/10/11

Today’s View

View Location Map £
¤
3Simulation Information
Transmission Line Proposed structure type: HVDC horizontal tangent
Information
Height range of existing transmission structures (visible): 43’ - 56.5’
Location: Forest Lake Road, Whitefield; facing South/West 43.133˚ N, -71.242˚ W
¬
«
116

(
!
Weather conditions: Sunny with some clouds

Note:
¬
«
142 Simulation is based upon a preliminary design. Exact structure height, location and color will be finalized during the detail design and


PRELIMINARY


10

Visual Simulation from Lakeshore Drive, Webster Lake, Franklin 5/10/11

Today’s View

View Location Map Sanbornton Simulation Information
Transmission Line Proposed structure type: HVDC horizontal and vertical tangent
Information
Sanbornton

¬ Right of way width 225’, no additional width required
¬
«
3A
«
127

!
(
Location: Lakeshore Drive, Webster Lake, Franklin; facing South/East 43.477˚ N, -71.697˚ W
Franklin

dover
Weather conditions: Cloudy
¬
«
11

Tilton Digital elevation data source: USGS National Elevation Dataset 1/3 Arc-Second (NED 1/3)

Note:
0’ 2000’ 4000’ £
¤
3
permitting process.


Proposed structure type: HVDC horizontal and vertical tangent 5/10/11
PRELIMINARY


12

Visual Simulation from Oak Hill Fire Tower, Loudon 5/10/11

Today’s View

Information
¬
«
129
Height range of existing transmission structures (visible): 79’ - 88’
Right of way width 257’6”, no additional width required
(
!

Location: Oak Hill Fire Tower, Loudon; facing West/South 43.477˚ N, -71.510˚ W
§
¦
¨
93

Weather conditions: Overcast

¬
«
132

Note:
¬
«
106 Simulation is based upon a preliminary design. Exact structure height, location and color will be finalized during the detail design and
0’ 3000’ 6000’ § permitting process.
¦
¨
393

¬
«
9

PRELIMINARY


14

Visual Simulation from Tree and Mountain Overlook, The Rocks Estate, Bethlehem 5/10/11

Today’s View

Existing power plant

Transmission Line Proposed structure type: HVDC horizontal tangent
Information
£
¤
302
Location: Tree and Mountain Overlook, The Rocks Estate, Bethlehem; facing North/East 43.282˚ N, -71.733˚ W
§
¦
¨
93

¬
«
Note:
18

¬
«
permitting process.
142

0’ 2000’ 4000’


PRELIMINARY




16

Visual Simulation from Tripoli Road, Woodstock 5/10/11

Today’s View
Existing communications structure

Transmission
Unorganized Territory Line Proposed structure type: HVDC horizontal tangent
Information

§
¦
¨
93 Height range of existing transmission structures (visible): 42’ - 47.5’
£
¤
3
Right of way width 225’, no additional width required, 75’ of clearing within existing ROW required
¬
«
175

Location: Tripoli Road (near exit 31), Woodstock; facing North 43.989˚ N, -71.673˚ W
Woodstock
(
!
Thornton
Weather conditions: Overcast

Note:


PRELIMINARY


18

Visual Simulation from Turtle Pond, Concord 5/10/11

Today’s View

Information
Right of way width 257’-6”
§
¦
¨93
Location: Off Oak Hill Rd (Turtle Pond), Concord; facing South 43.255˚ N, -71.521˚ W

¬
«
132
Weather conditions: Cloudy
¬
«
106

Note:
¬
«
9

£
¤
3
0’ 2000’
§
¦
¨
393 4000’ permitting process.


PRELIMINARY


20

Visual Simulation from Veteran’s Memorial, Hill 5/10/11

Today’s View


Transmission Line Proposed structure type: HVDC, horizontal tangent
Information
Height range of proposed transmission structures (visible): None Visible
Height range of existing transmission structures (visible): None Visible
Right of way width 175’, expanded width 225’
Location: Veteran’s memorial, Hill; Facing West 43.522˚ N, -71.701˚ W
Camera elevation above sea level: 445’ (135.6 m)

Note:
¬
«
permitting process.
3A

0’ 2000’ 4000’


5/10/11
PRELIMINARY

Max. struct
ure height



Note: Maximum height of proposed
structures is below existing tree line
and hidden from this view.

22

Visual Simulation from Weeks State Park, Lancaster 5/10/11

Today’s View

Transmission Line Proposed structure type: HVDC, vertical tangent, & 115kV, vertical/delta tangent (relocated)
Information

£
¤
2 Height range of existing transmission structures (visible): 43’ - 61’
Photograph Information Date and time: 03/30/11; 10:35 am
Location: East overlook at Weeks State Park, Lancaster; facing East; 44.450˚ N, -71.568˚ W
Camera elevation above sea level: 1850’ (563.9 m)
Weather conditions: Bright overcast

Note:
£
¤
3



Proposed structure type: HVDC, vertical tangent & 115kV, vertical/delta tangent (relocated) 5/10/11
PRELIMINARY


24

Visual Simulation from West Road, Canterbury 5/10/11

Today’s View

Transmission Line Proposed structure type: 345kV, AC, delta tangent, lattice or monopole (right side) & 115kV delta (center)
Information
Height range of proposed transmission structures (visible):74.5’ - 100’
!
(
Photograph Information Date and time: 04/03/11; 12:34 pm
Location: West Road, Canterbury; facing South/East; 43.335˚ N, -71.601˚ W
Canterbury Camera elevation above sea level: 377’ (114.9 m)
§
¦
¨
93

¬
«132

Boscawen

£
¤
Note:
3

£
¤
4
0’ 3000’ 6000’
Concord permitting process.


Proposed structure type: 345kV, AC, delta tangent (right side) & 115kV delta (center) 5/10/11
PRELIMINARY

Existing structures

Relocated structures


Existing structures

Relocated structures

26

The Northern Pass Project Visual Simulations

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