Appendix D: Visibility Analysis

PEQUONNOCK SUBSTATION REBUILD BRIDGEPORT, CONNECTICUT

February 2018

Prepared for: Prepared by:

The United Illuminating Company 180 Marsh Hill Road Orange, CT 06108

All-Points Technology Corporation, P.C. 3 Saddlebrook Drive

Killingworth, CT 06419

Page 1 of 2 February 2018

VISIBILITY ASSESSMENT

The United Illuminating Company (“UI”) proposes to decommission its existing, air-insulated Pequonnock

Substation located at One Atlantic Avenue in the south-central portion of Bridgeport, Connecticut (the “Site”)

and construct a new gas-insulated substation on a nearby parcel. At the request of UI, All-Points Technology

Corporation, P.C. (“APT”) completed a visibility assessment of the proposed Substation Rebuild Project to

evaluate potential views from nearby locations.

Site Setting and Project Description

A 3.7-acre site located at One Kiefer Street will accommodate the new Substation, which will occupy

approximately two (2) acres. The proposed location is approximately 700 feet southwest of the existing

Substation. Located in a highly developed industrial area south of Interstate 95 (“I-95”) and west of the

Pequonnock River, surrounding and nearby land uses include the Bridgeport Harbor Station generating facility,

electrical utilities, oil storage facilities, storage yards, warehouses, commercial office buildings and the

Interstate and Metro-North/Amtrak Railroad corridors.

The Project includes the construction and operation of a new gas-insulated substation and the relocation of the

eight (8) existing transmission and distribution lines that connect to the existing Substation. The new

Substation will include an 8,000-square foot enclosure and a ±2,600-square foot enclosure, as well as exterior

equipment. The new Substation and equipment will be elevated three (3) feet above the 100-year flood zone.1

Eight (8) 115-kV lines that feed the existing Pequonnock Substation will be relocated to connect to the new

Substation. To connect the existing overhead lines to the new substation, 17 new galvanized steel monopole

structures, ranging in height from 75 to 100 feet, will be installed on the Project site and adjacent properties,

including adjacent to the Metro-North Railroad corridor.

Methodology Employed

On April 11, 2017, APT personnel conducted a field reconnaissance to determine locations from where the

new Substation components would be visible and photo-document existing conditions at the Site. The

geographic coordinates of the camera’s position at each photo location were logged via GPS. Photographs

were taken with a Canon EOS 6D digital camera body and Canon EF 24 to 105 millimeter (“mm”) zoom lens.2

Three-dimensional computer models were developed for the Project area and Substation components from

digital elevation models and AutoCAD information. Photographic simulations were generated to portray scaled

renderings of the proposed Substation modifications. Using field data, site plan information and image editing

software, the Substation and associated appurtenances were scaled to the correct locations and heights,

1 The 100-year Base Flood Elevation for the area has been established at 14 feet Above Mean Sea Level as defined in 2013 by

the Federal Emergency Management Agency. 2

In addition to street-level photographs, an oblique aerial view was obtained to depict a “birds-eye” view of the Project area.

Page 2 of 2 February 2018

relative to the photo location and surrounding area. For presentation purposes in this report, all of the

photographs were produced in an approximate 7-inch by 10.5-inch format. Photo-simulations are provided in

the attachment to this report.

Photographs and renderings are provided in the attachment to this report. The photo-simulations provide a

representation of the proposed project under similar settings as those encountered during the field

reconnaissance. Views of the project can change throughout the seasons and the time of day, and are

dependent on weather and other atmospheric conditions (e.g., haze, fog, clouds); the location, angle and

intensity of the sun; and the specific viewer location. Weather conditions on the days of the reconnaissance

consisted of partly cloudy skies and the photo-simulations presented in this report provide an accurate

portrayal of the modified Substation under comparable conditions.

Visibility Assessment Results

Once constructed, the new Substation will remain consistent with surrounding land uses. As depicted on the

attached Visibility Map, the Project will not extend substantially beyond the immediate Site. Portions of the

new Substation will be seen from abutting northern and western locations along Ferry Access Road and Singer

Avenue, as well as from a short stretch of elevated I-95 farther to the northwest. In addition to these locations,

views of the new transmission structures will extend out up to ¼-mile west and north. The presence of large,

existing utility and industrial infrastructure will serve to obstruct the new facilities from several surrounding

locations. Based on the results of this assessment, the Project will not adversely affect views in the

surrounding community.

Prepared by:

All-Points Technology Corporation, P.C.

Michael Libertine

Director of Siting & Permitting

ATTACHMENT

EXISTING

PROPOSED

EXISTINGPHOTO LOCATION ORIENTATION

1 KIEFER STREET EAST

PROPOSEDPHOTO LOCATION ORIENTATION

1 KIEFER STREET EAST

RAMP

WARREN STREET

MYRTLE AVENUELAFAY ET TE

BOU LEVARD

S TR ATFO R D AV E N U E

FER R

YAC

CES

SRO

AD

ATLANTIC STREET

KO S SUTHS T

R EE T

UNION SQ

BANK STREET

EXIT 27A

WALL STREET

AN N S T R E E T

EXIT

27

KIEFER STREET

HENRY STREET

WHITING STREET

SINGER AVENUE

COURT STREET

PROSPECT STREET

MAIN

STR

EET

RUSSELL STREET

AUSTREETIN ST

MIDDLE STREETB R ID G EP OR T-POR T JE FFE RS ON

GREGORY STREET

LAFAYETTE STREET

R A ILR O A D AV E N U E

I 95

ALLEN STREET

WATER STREET

CANNON STREET

NICHOLS STREET

FAIRFIELD AVENUE

ELM STREET

GOLDEN HILL STREET

STREETATE ST

JOHN STREET

BROAD STREET

FRON

TAGE

ROAD

¬«127

§̈¦95

Bridgeport

BridgeportHarbor

Base Map Source: 2016 CT Aerial Imagery (CTECO) Map Scale: Map Date: February 2018

LegendApproximate Site Boundary

Approximate Areas of VisibilityProposed Transmission Poles VisibleProposed Ground Equiment and Transmission Poles VisibleMunicipal Boundary

Visibility Map

550 0 550275Feet

51 in = 550 ft

Pequonnock Substation RebuildBridgeport, Connecticut

Planned Substation Location

5

5

(!òñð(!òñð

5

Planned Substation Location

2,000 Feet

FAIRFIELD AVENUE

WARREN STREET

RAMP

LAFAYE T TEB OULE VAR D

F ERRYA CC E SS

R OA D

SOUTH AVENUE

S T R ATF O R D AV E N U E

BANK STREET

EXIT 27A

EXIT 29

M YRTLEAVEN UE

MA IN

S TR EE T

I 95

EXIT 27

EXIT

2

MAIDEN LANE

HENRY STREET

L IN D EN AVE N U E

RENNELL STREET

LIBERTY STREET

ALLEN STREET

COLUMBIA STREET

AUSTREETIN ST

HAZEL AVENUE

PARK AVENUE

EXIT 1

WEST AVENUE

LAFAYETTE STREET

GARDEN STREET

STREETATE ST

ATLANTIC STREET

UNIVERSITY AVENUE

JOHN STREET

BROAD STREET

GREGORY STREETPARK TERRACE

JOHNSON STREET

R A ILR O A D AV E N U E

FRON TA

GERO

AD

¬«25

¬«8

§̈¦95

Bridgeport BridgeportHarbor

Capital PrepHarbor Upper

School

HousatonicCommunity

College

Seaside ParkKnights Field

Abcd JamieHulley Early

Learning

Surrounding Features Map

LegendApproximate Subject Property2,000-Foot Radius

Surrounding Features (within 2,000 feet)

5 School

(!òñð Park/Recreation

Municipal and Private Open Space Property (CTDEEP GIS)Protected Open Space Property (CTDEEP GIS)

FederalLand TrustMunicipalPrivateStateState Forest/ParkMunicipal Boundary

_̂

5500 0 500250

Feet1 in = 500 ft

C:\Users\mkoperwhats\Dropbox (APT GIS)\APT GIS Team Folder\Projects\UI\Pequonnock_Rebuild_270\mxd\Surrounding Features Map_11X17.mxd

Pequonnock Substation RebuildBridgeport, Connecticut

Base Map Source: 2016 CT Aerial Imagery (CTECO) Map Date: January 2018

Resource Type Name Address Distance from Project Area

DaycareNone located within 2,000 Feet

Community CenterNone located within 2,000 Feet

Senior FacilityNone located within 2,000 Feet

HospitalNone located within 2,000 Feet

SchoolCapital Prep Harbor Upper School 777 Main St, Bridgeport, CT 1,640' N

Housatonic Community College 900 Lafayette Blvd, Bridgeport, CT 1,584' NWAbcd Jamie Hulley Early Learning 460 Lafayette St, Bridgeport, CT 900' W

Recreational / Park Seaside Park 1 Barnum Dyke, Bridgeport, CT 1,425' SKnights Field 113 University Ave, Bridgeport, CT 1,425' SW

Youth CampNone located within 2,000 Feet

Public Facilities and ResourcesPequonnock Substation Rebuild - Bridgeport, Fairfield County, Connecticut