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22333725-v4
Via Electronic Mail ([email protected])
May 14, 2021
Melanie Bachman
Executive Director
Connecticut Siting Council
10 Franklin Square
New Britain, CT 06051
Re: PETITION NO. 1442 - SR Litchfield, LLC petition for a declaratory ruling, pursuant
to Connecticut General Statutes §4-176 and §16-50k, for the proposed construction,
maintenance and operation of a 19.8-megawatt AC solar photovoltaic electric
generating facility on 6 contiguous parcels located both east and west of Wilson Road
south of the intersection with Litchfield Town Farm Road in Litchfield, Connecticut,
and both east and west of Rossi Road, south of the intersection with Highland Avenue
in Torrington, Connecticut, and associated electrical interconnection
Dear Attorney Bachman:
SR Litchfield, LLC hereby submits a revised Preliminary Site Layout Plan (Petition Exhibit A
(rev. 05.03.21)) and a map illustrating the modifications made to the original Project design
(Exhibit 1: Overall Site Plan) in connection with the above-referenced Petition.
These updated documents are the result of SR Litchfield’s extensive and substantial redesign of
the Project. This redesign was undertaken to address certain comments, concerns and suggestions
raised by the Siting Council (Council), neighbors, the Town of Litchfield (Town), the Council on
Environmental Quality (CEQ), the Department of Energy and Environmental Protection (DEEP),
and the Department of Agriculture.
To assist the Council in its review of the attached Project plan revisions, SR Litchfield also
provides the following narrative summarizing many of the changes made during the Project
redesign. Where appropriate, references are made to Exhibit 1: Overall Site Plan.
JONATHAN H. SCHAEFER
280 Trumbull Street
Hartford, CT 06103-3597
Main (860) 275-8200
Fax (860) 275-8299
Direct (860) 275-8349
Also admitted in Massachusetts
and Vermont
MV
MV
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MV
MV
MV
MVMV
MV
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MV
MVMV
MV
MV
MV
MV
MV
MV
MVMV
MV
MV
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MV
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MV
MV
MV
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MV
MV
MV
MV
MV
MV
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MVMV
MV
MV
MV
MV
MV
MV
AC
AC
AC
AC
AC
MV
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MV
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MV
MV
MV MV MV
AC
AC
AC
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AC
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AC
AC
AC
AC AC AC
AC
AC
AC
AC
AC
AC
AC
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AC
AC
AC
AC
AC
AC
ACAC
AC
AC
AC
AC
MV
MV
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MV
MV
MVMV
MV
MV
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MV
MV
MV
LOD
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LOD
LOD
PRELIMINARY LAYOUT
PV-100
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
N1
PV-100ARRAY PLAN
Scale: 1"=250'
2
PV-100TYP. MODULE RACKS
Scale: 1"=20'
WIM
BLE
DO
N G
ATE
N
RO
SS
I RD
LITCHFIELD TOWN-FARM RD
LEGEND
2P X 25 HANWHA Q-CELLS475W @25° TILT
PERMANENT FENCE LINE
16FT ACCESS ROADS
OVERHEAD ELECTRICAL LINES
2P X 13 HANWHA Q-CELLS475W @25° TILT
EQUIPMENT RACK (TYP. OF 8)(1) LV SWITCHGEAR & (1) MV TRANSFORMER
EQUIPMENT RACK WITH 1 STRING INVERTER
PROJECT DETAILS
SYSTEM SIZE AC 19,800.00 kW
SYSTEM SIZE DC 24,367.50 kW
DC/AC RATIO 1.23
MODULE MODELHANWHA Q CELLS
Q.PEAK DUO XL-G10.3/BFG 475W
MODULE RATING 475 W
TOTAL MODULE QTY 51,300
# OF MODULES PER STRINGS 25
TOTAL # OF STRINGS 2,052
INVERTER MODEL SUNGROW SG250HX
INVERTER RATING 250 kW
TOTAL INVERTER QTY 90
RACKING GROUND MOUNT FIXED TILT
TILT ANGLE 25°
AZIMUTH 180°
PITCH 22.7'
INTER ROW SPACING 10.2'
GCR 60%
FENCED AREA 70.42 ACRES
PROPERTY AREA 211.70 ACRES
AVERAGE DISTANCE BETWEENFENCE AND MODULE
15'
MINIMUM DISTANCE BETWEENFENCE AND MODULE
4.5'
AVERAGE DISTANCE BETWEENWETLANDS AND MODULE
100'
MINIMUM DISTANCE BETWEENWETLANDS AND MODULE
50'
86.7'
22.0'
8.8'
LIMIT OF DISTURBANCELOD LOD
GCR TABLE
FEET METER
X 14.58 4.44 MODULE WIDTH
Y 8.81 2.69 AISLE WIDTH
Z 22.03 6.72 PITCH
GCR PER PVSYST 66% X/Z
ACTUAL GCR 60.0% (Z-Y)/Z
Z
Y
X
3
PV-100GCR DETAILS
Scale: NTS
EQUIPMENT RACK WITH 3 STRING INVERTERS
UNDERGROUND MEDIUM VOLTAGE CABLEMV MV MVPV-101
1
PV-1041
PV-1031
PV-1021
EQUIPMENT RACK WITH 4 STRING INVERTERS
UNDERGROUND AC CABLEAC AC
WETLANDS
MV SWITCH GEAR
STORMWATER BASIN
SUNGROW 250kW STRING INVERTER
(E) UTILITY POLE - POI
TEMPORARY LAYDOWN AREA(TO BE RESTORED FOLLOWING COMPLETIONOF CONSTRUCTION ACTIVITIES)
TEMPORARY LAYDOWN AND DELIVERYAREA ~0.41 ACRES
(TO BE RESTORED FOLLOWINGCOMPLETION OF CONSTRUCTION
ACTIVITIES)
TEMPORARY PARKING AREA (GRAVEL)~0.40 ACRES
CONSTRUCTION TRAILER(S) AREA~0.10 ACRES
12FT ACCESS ROADS
25' WETLAND BUFFER
100' GULF STREAM BUFFER
25.0' BUFFER FROMWETLAND
100.0' BUFFER FROMGULF STREAM
100.0' VERNAL POOLENVELOPE (VPE)
PERMANENT FENCING (INSTALLEDAT COMPLETION OF CONSTRUCTION
ACTIVITIES)
100.0' VERNAL POOLENVELOPE (VPE)
VERNAL POOL 1
VERNAL POOL 2
GULF STREAM
GULF STREAM
GULF STREAM
GULF STREAM
GULF STREAM
12B
Z
XY
2B/4B
B/1B
H
W
V
AA
C/5C
2A
1A
A
D
1D
3C/4C/2N
4N
2N
3N
N/1N
WETLAND ID2A
E
TEMPORARY FENCE LINEX X X X
LANDSCAPING
WETLAND SETBACK
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LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
HIGHLAND AVE
ARRAY DETAILS
PV-101N1
PV-101ARRAY DETAILS
Scale: 1"=75'
LEGEND
PERMANENT FENCE LINE
16FT ACCESS ROADS
OVERHEAD ELECTRICAL LINES
EQUIPMENT RACK(1) LV SWITCHGEAR & (1) MV TRANSFORMER
EQUIPMENT RACK WITH 1 STRING INVERTER(TYP. OF 3 LOCATIONS)
LIMIT OF DISTURBANCELOD LOD
EQUIPMENT RACK WITH 3 STRING INVERTERS(TYP. OF 17 LOCATIONS)
UNDERGROUND MEDIUM VOLTAGE CABLEMV MV MV
EQUIPMENT RACK WITH 4 STRING INVERTERS(TYP. OF 9 LOCATIONS)
UNDERGROUND AC CABLEAC AC
WETLANDS
STORMWATER BASIN
SUNGROW 250kW STRING INVERTER(TYP. OF 90)
TEMPORARY LAYDOWN AREA(TO BE RESTORED FOLLOWING COMPLETIONOF CONSTRUCTION ACTIVITIES)
12FT ACCESS ROADS
25' WETLAND BUFFER
100' GULF STREAM BUFFER
LANDSCAPING
2P X 25 HANWHA Q-CELLS475W @25° TILT
2P X 13 HANWHA Q-CELLS475W @25° TILT
WETLAND SETBACK
MVMVMV MVMVMV
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MVMVMV
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LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD
LOD
LOD
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
LITCHFIELD TOWN FARM RD
ARRAY DETAILS
PV-102N1
PV-102ARRAY DETAILS
Scale: 1"=50'
VERNAL POOL 1
100.0' VERNAL POOL ENVELOPE (VPE)
LEGEND
PERMANENT FENCE LINE
16FT ACCESS ROADS
OVERHEAD ELECTRICAL LINES
EQUIPMENT RACK(1) LV SWITCHGEAR & (1) MV TRANSFORMER
EQUIPMENT RACK WITH 1 STRING INVERTER(TYP. OF 3 LOCATIONS)
LIMIT OF DISTURBANCELOD LOD
EQUIPMENT RACK WITH 3 STRING INVERTERS(TYP. OF 17 LOCATIONS)
UNDERGROUND MEDIUM VOLTAGE CABLEMV MV MV
EQUIPMENT RACK WITH 4 STRING INVERTERS(TYP. OF 9 LOCATIONS)
UNDERGROUND AC CABLEAC AC
WETLANDS
STORMWATER BASIN
SUNGROW 250kW STRING INVERTER(TYP. OF 90)
TEMPORARY LAYDOWN AREA(TO BE RESTORED FOLLOWING COMPLETIONOF CONSTRUCTION ACTIVITIES)
12FT ACCESS ROADS
25' WETLAND BUFFER
100' GULF STREAM BUFFER
LANDSCAPING
2P X 25 HANWHA Q-CELLS475W @25° TILT
2P X 13 HANWHA Q-CELLS475W @25° TILT
WETLAND SETBACK
MV
MVMVMV
MV
MVMVMV
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MVMVMVMVMV
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AC AC AC AC
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LOD
LOD
LOD
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
WILS
ON
RD
ARRAY DETAILS
PV-103N1
PV-103ARRAY DETAILS
Scale: 1"=60'
LEGEND
PERMANENT FENCE LINE
16FT ACCESS ROADS
OVERHEAD ELECTRICAL LINES
EQUIPMENT RACK(1) LV SWITCHGEAR & (1) MV TRANSFORMER
EQUIPMENT RACK WITH 1 STRING INVERTER(TYP. OF 3 LOCATIONS)
LIMIT OF DISTURBANCELOD LOD
EQUIPMENT RACK WITH 3 STRING INVERTERS(TYP. OF 17 LOCATIONS)
UNDERGROUND MEDIUM VOLTAGE CABLEMV MV MV
EQUIPMENT RACK WITH 4 STRING INVERTERS(TYP. OF 9 LOCATIONS)
UNDERGROUND AC CABLEAC AC
WETLANDS
STORMWATER BASIN
SUNGROW 250kW STRING INVERTER(TYP. OF 90)
TEMPORARY LAYDOWN AREA(TO BE RESTORED FOLLOWING COMPLETIONOF CONSTRUCTION ACTIVITIES)
12FT ACCESS ROADS
25' WETLAND BUFFER
100' GULF STREAM BUFFER
LANDSCAPING
2P X 25 HANWHA Q-CELLS475W @25° TILT
2P X 13 HANWHA Q-CELLS475W @25° TILT
WETLAND SETBACK
MV
MV
MV
MV
MV
MV
MV
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AC
AC
AC
AC
ACAC
AC
AC
ACACACAC
AC
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MVMV
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MV MV MV MV
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AC AC
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ACACACAC
AC
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AC
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AC
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AC
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MVMVMV
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MVMVMVMVMVMVMVMV
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LOD
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LOD
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LOD
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LODLOD
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ARRAY DETAILS
PV-104
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
N1
PV-104ARRAY DETAILS
Scale: 1"=120'
RO
SS
I RD
WILS
ON
RD
VERNAL POOL 2
100.0' VERNAL POOL ENVELOPE (VPE)
LEGEND
PERMANENT FENCE LINE
16FT ACCESS ROADS
OVERHEAD ELECTRICAL LINES
EQUIPMENT RACK(1) LV SWITCHGEAR & (1) MV TRANSFORMER
EQUIPMENT RACK WITH 1 STRING INVERTER(TYP. OF 3 LOCATIONS)
LIMIT OF DISTURBANCELOD LOD
EQUIPMENT RACK WITH 3 STRING INVERTERS(TYP. OF 17 LOCATIONS)
UNDERGROUND MEDIUM VOLTAGE CABLEMV MV MV
EQUIPMENT RACK WITH 4 STRING INVERTERS(TYP. OF 9 LOCATIONS)
UNDERGROUND AC CABLEAC AC
WETLANDS
STORMWATER BASIN
SUNGROW 250kW STRING INVERTER(TYP. OF 90)
TEMPORARY LAYDOWN AREA(TO BE RESTORED FOLLOWING COMPLETIONOF CONSTRUCTION ACTIVITIES)
12FT ACCESS ROADS
25' WETLAND BUFFER
100' GULF STREAM BUFFER
LANDSCAPING
2P X 25 HANWHA Q-CELLS475W @25° TILT
2P X 13 HANWHA Q-CELLS475W @25° TILT
WETLAND SETBACK
INVERTER ELEVATIONDETAILS
PV-105
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
2
PV-105INVERTER ELEVATION (SIDE VIEW) AND DC SOURCE CIRCUIT (JUMPER) TRENCH DETAIL
Scale: NTS
U.G. DC SOURCE CIRCUITCONDUCTORS IN
PVC SCH40 CONDUITS BELOW GROUNDAND PVC SCH80 ABOVE GROUND
INVERTER (TYP.)
RISER CONDUIT.
AC FEEDERSTO SWITCHGEAR
GRADE24" MIN.24" MIN.
#6 BARE COPPERGROUND (TYP.)
PV MODULE
INVERTER (TYP.)
UNISTRUT
1
PV-105INVERTER MOUNTING (PLAN VIEW)
Scale: NTS
INVERTER (TYP.)
FINISHED GRADE
PV MODULE
3
PV-105INVERTER ELEVATION (FRONT VIEW)
Scale: NTS
24" MIN.
12"MIN. 41.4"
204"
54" MIN.
SINGLE LINE DIAGRAM
E-100
LITCHFIELDSOLAR
2-298 ROSSI RDTORRINGTON, CT 06790, USA.
LAT: 41.794157°NLON: 73.168028°W
0 PRELIMINARY 05/03/21
SDE 05/03/21
LR AS SHOWN
LITCHFIELD SOLAR SINGLE LINE DIAGRAM1
PVDP #2
INV#1.1250KW
MODULE 1 MODULE 25
DATA
MPPT 1
TO NEGATIVEINPUT OF MPPT
DATA
DATA
DATA
INV#2.1 - INV#2.4250KW
25 PV MODULES PER CIRCUIT
INV#1.2250KW
INV#1.3250KW
INV#1.4250KW
(N) PV SWITCHGEAR #12500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER
(N) PYRANOMETER, ANEMOMETER,MODULE TEMP SENSOR, AND DATAACQUISITION SYSTEM
POWER STATION
52
SEL351R
RECLOSER35KV
UTILITY AC DISCONNECT35KV, 600A, 3ɸ, FUSED DISCONNECT AT 50A
ACCESSIBLE WITH LOCK PROVISIONAND VISIBLE BLADE
27.6KV CAMPVILLE 14R32DISTRIBUTION CIRCUIT
(E) UTILITY POLEPOI
(TYPICAL OF 90)SUNGROW SG250HX-US INVERTER
250KW, 800VAC, 1500VDCANTI-ISLANDING IEEE 1547 COMPLIANT,
UL 1741 SA LISTED
180.5 A
3W+PE
180.5 A
PVDP#1AC COMBINER PANELBOARD
1000A, 800VAC, 3ɸ, 3W, NEMA3R
312.65A MAX.
722 A
3W+PE
722 A
3W+PE
1,985.5 A MAX.
DAS
M
COMMUNICATIONS
RTU
FIBER
PRIMARYMETER
CAT-5e
SERIAL
PVDP #3INV#3.1 - INV#3.3
250KW541.5 A
3W+PE
PAD MOUNTED SWITCH GEAR
GENERAL NOTES
1. AC MV CIRCUITS SHALL BE INSTALLED AND INTERCONNECTED WITHUTILITY, PER UTILITY SPECIFICATIONS.
2. ALL ELECTRICAL WORK SHALL BE IN ACCORDANCE WITH THE 2017EDITION OF NATIONAL ELECTRIC CODE.
3. ALL DC AND AC EQUIPMENT, WHERE APPLICABLE, SHALL BE LISTEDAND LABELED PER RECOGNIZED ELECTRICAL TESTING LABORATORYAND INSTALLED PER THE LISTING REQUIREMENTS, THEMANUFACTURER'S INSTRUCTIONS AND IN ACCORDANCE WITH NEC.
4. RECLOSER CONTROL SETTINGS TO BE COORDINATED WITH UTILITYAND CONTRACTOR.
180.5 A
180.5 A
(N) PV SWITCHGEAR #23500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 15 INVERTERS)
G
TRANSFORMER #23750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
2707.5A MAX.
301.08A MAX.
SYSTEM SPECIFICATIONS
SYSTEM SIZE DC 24,367.50 kW
SYSTEM SIZE AC 19,800.00 kW
DC/AC RATIO 1.23
MODULE MODELHANWHA Q CELLS
Q.PEAK DUO XL-G10.3/BFG 475W
MODULE RATING 475 W
TOTAL MODULE QTY 51,300
MODULES PER STRING 25
TOTAL NO. OF STRINGS 2,052
INVERTER MODEL SUNGROW SG250HX
INVERTER RATING 250 kW
INVERTER QTY 90
480V
120/240V
5KVA AUXILIARYPANEL
600V
480V CONVENIENCEOUTLET
20KVA AUXILIARYPANEL
(N) PV SWITCHGEAR #53500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 15 INVERTERS)
G
TRANSFORMER #53750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV 800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
2707.5A MAX.
301.08A MAX.
16.8KVMCOVSURGEARRESTOR
(N) PV SWITCHGEAR #62500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 11 INVERTERS)
G
TRANSFORMER #62750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV 800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
1985.5A MAX.
16.8KVMCOV
SURGEARRESTOR
(N) PV SWITCHGEAR #32000A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 7 INVERTERS)
G
TRANSFORMER #31750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
1263.5A MAX.
208.44A MAX.
(N) PV SWITCHGEAR #72500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 9 INVERTERS)
G
TRANSFORMER #72250 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV 800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
1624.5A MAX.
220.02A MAX.
(N) PV SWITCHGEAR #42500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 11 INVERTERS)
G
TRANSFORMER #42750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
1985.5A MAX.
16.8KVMCOVSURGEARRESTOR
(N) PV SWITCHGEAR #82500A, 800V, 3ɸ, 3W, NEMA3R,
MAIN BREAKER(TOTAL 10 INVERTERS)
G
TRANSFORMER #82500 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV 800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
1624.5A MAX.
16.8KVMCOV
SURGEARRESTOR
COMBINERBOX
G
TRANSFORMER #12750 kVA, 3Ø, 4W, MIN. Z=5.74%
27.6kV800V
CURRENTLIMITING
FUSE
LOADBREAKSWITCH
G
Melanie Bachman
May 14, 2021
Page 2
When reviewing Exhibit 1: Overall Site Plan, the following narrative legend/key may be useful:
• Blue “LOD” Line – New revised Limit of Disturbance
• Green “LOD” Line – Previous Limit of Disturbance
• Blue Ponds – New Revised Stormwater Ponds
• Green Ponds – Previous Stormwater Ponds
• Red Dotted Line – 100’ Gulf Stream Buffer
• Gray Thick Line – Previous Road, Now Removed
• Parallel Solid Black Lines – New Revised Road
• Grey Hatch marks = Previous Tree Clearing, Not Occurring Under Redesign
Impetus for the Redesign
As noted above, SR Litchfield has been listening to concerns raised by neighbors and the Town
and seriously considering and evaluating the questions posed in the Council’s interrogatories and
the concerns raised in the comments from several state agencies. While SR Litchfield had
anticipated many of these questions and concerns surrounding its original design, it was
constrained in its options to address them due to its contractual commitment under it Power
Purchase Agreement (PPA), the output of the available solar modules, and topography and
environmental conditions at the Site.
As the output of the solar modules was the only one of these variables within SR Litchfield’s
control to change, even prior to submitting its Petition SR Litchfield had been aggressively
exploring alternative module options. In April, SR Litchfield was able to secure a sufficient
supply of Hanwha QCell’s newest solar module – Q.Peak Duo XL-G10.3/BFG 475. These
bifacial modules will provide a significantly higher wattage (output) than the module considered
as part of the original Project design.
As a result of the increased output per module, SR Litchfield was able to meet its contractual
obligation under the PPA using fewer modules. By reducing the number of modules, SR
Litchfield’s design team was provided increased flexibility in the Project layout. SR Litchfield
used this flexibility to address what it perceived to be the most significant concerns and
questions raised to date, whether by the Council, the Town, neighbors, or other state agencies.
Melanie Bachman
May 14, 2021
Page 3
The redesigned Project reflects: (i) a significant reduction in the Limit of Disturbance area; (ii) a
substantial reduction in tree clearing; (iii) removal of modules from steep slopes; (iv) a
significant reduction in site grading (v) an increase in setbacks from important environmental
features (e.g., wetlands, vernal pools, and Gulf Stream); (vi) the elimination of any activity
within a one hundred foot (100’) buffer of Gulf Stream; and (vii) a considerable decrease in
overall wetland disturbance.
Project Modifications
Exhibit 1: Overall Site Plan is broken down into sections identified as Area 1, Area 2, and Area
3. The Project modifications are summarized below in each of these areas.
Area 1
Starting at the access roadway off Highland Avenue to the north, this existing access driveway
will now be used to access the Project’s northern-most array fields. This access roadway will be
narrowed to twelve feet (12’), narrower than SR Litchfield would typically construct, to reduce
wetland impacts. Retention walls (gabion blocks) will be used to support this access driveway
and further minimize the impact on the wetland. This approach is partially responsible for the
reduction in a more than fifty percent (50%) overall reduction in wetland disturbance between
the original Project design and the redesigned Project.
Next, turning to the area east of the Eversource transmission line easement and west of the
properties along Wimbledon Gate North, several rows of solar modules were eliminated from the
Project design. These modules had been located to the south. By removing these modules, a
considerable amount of earth-work and grading was eliminated. Additionally, the Limit of
Disturbance was retracted considerably in this area resulting in a significant reduction in the
amount of tree clearing, contributing to the more than sixty-two percent (62%) overall reduction
in tree clearing from the original Project design. Furthermore, Stormwater Pond 9 was reduced in
size and moved to the north and off of the steeper slopes. These changes also increased the
distance between any development activity the Wimbledon Gate North residences to the east.
Similar modifications were also made in the area to the west of the Eversource transmission line
easement and east of Gulf Stream. Stormwater Pond 14 was reduced in size and the discharge
towards Gulf Stream was eliminated. The Limit of Disturbance was contracted substantially in
this area. A significant level of tree clearing was also eliminated. These modifications increased
the buffer in this area between development activity and the Gulf Stream riparian corridor to a
minimum of one hundred feet (100’).
Melanie Bachman
May 14, 2021
Page 4
These modifications resulted in a reduction of the Limits of Disturbance in Area 1 by
approximately 6.5 acres and a reduction of tree clearing in Area 1 by approximately 6.3 acres.
Overall, these modifications are a significant contributor to the more than twenty-five percent
(25%) reduction in overall site disturbance (e.g., clearing, grading, fencing), including a more
than eighty percent (80%) reduction in grading, from the original Project design.
Area 2
Starting with the small solar array directly east of Rossi Road and north of the intersection with
Town Farm Road, Stormwater Pond 4 and its discharge point were moved outside of the one
hundred-foot (100’) buffer from Gulf Stream. These modifications eliminated all development
activity in this area from the one hundred food (100’) Gulf Stream riparian corridor.
Further, the access roadway from Rossi Road was eliminated and replaced with a smaller Site
entrance driveway added perpendicular to Rossi Road. The elimination of this access roadway
eliminates the crossing of Gulf Stream and the need to install a culvert over Gulf Stream. This
modification significantly reduced wetland impacts and preserved Gulf Stream in its current
state. It also eliminated a sizable amount of roadway on the east side of Gulf Stream. By
removing this roadway, the Limit of Disturbance in this area was reduced and brought outside
the one hundred foot (100’) Gulf Stream buffer.
The redesign also eliminated the underground electric line that would have extended from the
solar array east of Rossi Road to the solar array south of Town Farm Road and would have
traversed a wetland and a tributary of Gulf Stream. Instead, if this electric line is necessary, it
would now be placed overhead. The overhead electric line would have a clear span over Gulf
Stream and the bordering wetlands in order to avoid any direct impact within Gulf Stream and
the one hundred foot (100’) Gulf Stream buffer. This overhead line would also be positioned
along the existing farm road that crosses Gulf Stream, an area that is already cleared of
vegetation, to avoid the need for any additional tree or vegetation clearing within or bordering
Gulf Stream, thereby eliminating any direct or indirect impacts.
These modifications eliminated activity with the Gulf Stream riparian corridor. Avoiding the
additional tree or vegetation clearing within or bordering Gulf Stream were a priority of SR
Litchfield. SR Litchfield recognizes the ecological value of Gulf Stream as a regionally
important cold-water fisheries and has place preservation of this important resource as a priority
when making design modifications. SR Litchfield also valued the Council’s interrogatories
related to the impacts to and around Gulf Stream, as well as the comments from CEQ and DEEP.
Melanie Bachman
May 14, 2021
Page 5
Moving to the area east of Gulf Stream, the laydown area east of Stormwater Pond 8/10 was
eliminated. Stormwater Pond 8/10 was also substantially reduced in size, moved to the east and
away from Gulf Stream, and its discharge point was moved outside the one hundred foot (100’)
Gulf Stream buffer. In general, the Limit of Disturbance in this area was reduced considerable.
This resulted in a sizable reduction in tree clearing along the east side of the Gulf Stream riparian
corridor.
In the small area to the east of the Eversource transmission line easement, south of Stormwater
Pond 5, and west of the Site boundary, the internal access roadway was eliminated. This allowed
the Limit of Disturbance in this area to be reduced to a location more than one hundred feet
(100’) from the wetlands in the area of Vernal Pool 2. The elimination of the roadway in this
area also eliminated another culvert crossing.
Continuing south along the eastern property border, Stormwater Pond 11 was modified to move
the discharge point from the southeast corner to the southwest corner. This modification was
made after several discussions with the adjacent property owner (68 Wilson Road). The goal of
the change is to better manage the discharge and any stormwater runoff from affecting the
adjacent property owner’s property. While SR Litchfield and its consultants were confident that
the prior design of Stormwater Pond 11 did not pose a risk to the adjoining property, it
nevertheless undertook to address the owner’s concerns.
Similarly, the Limit of Disturbance along the property line with 68, 84, and 86 Wilson Road was
significantly reduced; in many places the limits of disturbance were reduced by more than one
hundred feet (100’). This not only will reduce the tree clearing in this area, but it will preserve a
natural buffer with these adjoining properties. To achieve this reduction in the Limit of
Disturbance in this area, several rows of modules on steep slopes near Stormwater Pond 7 were
eliminated. Allowing a sizeable reduction in grading in this area. Stormwater Pond 7 was also
redesigned and moved north. The discharge point for Stormwater Pond 7 was also modified and
it no longer has a direct discharge into wetlands.
Perhaps one of the more significant additions to the Project design was the addition of an access
roadway from east side of Wilson Road. This access roadway is a replacement for the access
driveway that previously crossed Gulf Stream. SR Litchfield seriously considered the Council’s
Interrogatory No. 48 and conducted a comprehensive evaluation of the Council’s suggested
approach. While the new access roadway will have grades up to twenty percent (20%), require
cut and fill slopes in previously undisturbed and forested areas, and will result in a Limit of
Disturbance (a roadway) that is fifty feet (50’) from two separate wetlands, SR Litchfield agreed
with the Council that when compared with the impacts the former access roadway would have to
Melanie Bachman
May 14, 2021
Page 6
Gulf Stream and the adjacent wetlands this option was ecologically and environmentally
preferable.
Taken together, the significant and positive changes made to the Project design in Area 2
resulted in a reduction of the Limit of Disturbance by approximately 11.75 acres. They also
resulted in a reduction of tree clearing by approximately 9 acres. Both very significant reductions
and improvements.
Area 3
Moving west of Wilson Road, the access roadway on the west side of Wilson Road was
eliminated. Stormwater Pond 2 was also changed to two (2) separate ponds – Pond 2A and Pond
2B. These two changes allowed the Limit of Disturbance to be reduced, a sizeable amount of tree
clearing to be eliminated, and Stormwater Pond 2B to be moved outside of the one hundred foot
(100’) Gulf Stream buffer. In addition, Stormwater Pond 2B (formerly Pond 2) no longer has a
direct discharge to Gulf Stream.
Moving north, Stormwater Pond 1 was similarly modified and moved north out of the one
hundred foot (100’) buffer for a tributary of Gulf Stream and more than one hundred feet (100’)
from the nearest wetland. Similarly, the Limit of Disturbance was also moved outside of these
buffers to once again draw development activity away from wetlands and watercourses and
reduce the need for grading and tree clearing.
In the area north of Town Farm Road and west of Rossi Road, Stormwater Pond 3 was reduced
in size substantially, resulting in the Limit of Disturbance in this area being reduced and removed
from the one hundred foot (100’) buffer for a tributary of Gulf Stream. This also provided a
larger buffer between the wetlands in this area and development activity. In fact, the Limit of
Disturbance around the entire solar array field in this area was reduced. Thus, moving
development activity further away from neighboring properties and away from wetlands and
watercourses.
Importantly, the laydown area in the northern portion of this array was moved to the south. This
places the laydown area outside the one hundred foot (100’) vernal pool envelope (VPE) for
Vernal Pool 1. This change is in direct response to the Council’s inquiry in Interrogatory No. 59.
With this change, there will be no permanent or temporary disturbances within the VPE for
either Vernal Pool 1 or Vernal Pool 2.
Melanie Bachman
May 14, 2021
Page 7
Altogether the changes made to the Project design in Area 3 resulted in a total reduction of the
Limit of Disturbance in this area by approximately 4.3 acres. Tree clearing in this area was
reduced by approximately 0.6 acres.
Conclusion
As compared with the original Project design, the redesign resulted in:
• an approximately fifty percent (50%) reduction in the amount of earthwork;
• an approximately thirty percent (30%), on average, reduction to the size of Stormwater
Ponds;
o Where possible, infiltration trenches will be used to meet DEEP’s quality and
quantity requirements.
o Sediment traps and compost filter socks will also be used throughout the Site
during construction to capture sediment runoff at point source.
• the maintenance of a one hundred foot (100’) buffer from Gulf Stream and its tributaries
throughout the Site;
• the maintenance of a one hundred foot (100’) buffer from both vernal pools on the Site;
• the establishment of a one hundred foot (100’) buffer upstream of all wetlands on the
Site;
• the reduction of wetland disturbance by more than fifty percent (50%);
• the reduction of the overall disturbance (grading, clearing, fencing, etc.) site-wide by
more than twenty-five percent (25%);
• the reduction of grading site-wide by more than eighty percent (80%); and
• the reduction of tree clearing (six inches (6”) breast height) by more than sixty-two
percent (62%).
Melanie Bachman
May 14, 2021
Page 8
I hereby certify that on this date a copy of this filing was sent via electronic mail to Dominick J.
Thomas, Esq. ([email protected]).
If you have any questions concerning this submittal, please contact me at your convenience.
Sincerely,
Jonathan H. Schaefer
Enclosures (revised Preliminary Site Layout Plan (Petition Exhibit A (rev. 05.03.21) and a map
illustrating the modifications made to the original Project design (Exhibit 1;
Overall Site Plan (05.12.21)))
POND-3
P
O
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2
B
PO
ND
-7
POND-13
POND-8/10
PO
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P
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1
4
P
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1
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POND-4
POND-2A
AREA 1
AREA 2
AREA 3
EXHIBIT1.1 EXHIBIT1.2
EXHIBIT1.3
GULF STREAM
GU
LF
ST
RE
AM
50' WETLAND
BUFFER
100' VERNAL POOL
ENVELOPE (VPE)
100' VERNAL POOL
ENVELOPE (VPE)
VERNAL POOL 2
VERNAL POOL 1
GU
LF
ST
RE
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G
U
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F
S
T
R
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A
M
100' GULF STREAM
BUFFER
50' WETLAND
BUFFER
100' WETLAND
BUFFER
25' WETLAND
BUFFER
100' WETLAND
BUFFER
PREVIOUS LOD
PREVIOUS
LOD
PREVIOUS LOD
PREVIOUS
LOD
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REVISED LOD
REVISED LOD
REVISED LOD
REVISED LOD
REMOVED ROAD
REMOVED
ROAD
REMOVED CULVERT
AND GULF STREAM
CROSSING
REMOVED
ROAD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REMOVED CULVERT CROSSING
PREVIOUS
POND
REVISED POND
REVISED
LOD
REVISED LOD
PREVIOUS
POND
REVISED POND
PREVIOUS TREE CLEARING AREA, NO LONGER BEING REMOVED
PREVIOUS TREE CLEARING AREA, NO
LONGER BEING REMOVED
PREVIOUS TREE
CLEARING AREA,
NO LONGER BEING
REMOVED
PREVIOUS TREE CLEARING AREA, NO LONGER BEING REMOVED
1"=200'
LITCHFIELD, CT
LITCHFIELD
SOLAR
NOT FOR
CONSTRUCTION
2-298 ROSSI RD
TORRINGTON, CT 06790, USA
LAT: 41.794157°N
LON: 73.168028°W
WK MB
NC
CP
WK MB
NC
EXHIBIT1
OVERALL SITE PLAN
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05/12/21
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POND-4
AREA 1
GULF STREAM
50' WETLAND
BUFFER
100' WETLAND
BUFFER
25' WETLAND BUFFER
100' WETLAND BUFFER
PREVIOUS LOD
PREVIOUS
LOD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REVISED LOD
REVISED LOD
REMOVED
ROAD
REMOVED CULVERT
AND GULF STREAM
CROSSING
PREVIOUS LOD
REVISED LOD
PREVIOUS
POND
REVISED POND
PREVIOUS TREE CLEARING AREA, NO LONGER BEING REMOVED
PREVIOUS TREE CLEARING AREA, NO LONGER BEING REMOVED
1"=100'
LITCHFIELD, CT
LITCHFIELD
SOLAR
NOT FOR
CONSTRUCTION
2-298 ROSSI RD
TORRINGTON, CT 06790, USA
LAT: 41.794157°N
LON: 73.168028°W
WK MB
NC
CP
WK MB
NC
EXHIBIT1.1
VIEW PLAN 1
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05/12/21
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POND-4
POND-2A
AREA 2
GU
LF
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100' VERNAL POOL
ENVELOPE (VPE)
VERNAL POOL 2
GU
LF
ST
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G
U
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S
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100' GULF STREAM
BUFFER
50' WETLAND
BUFFER
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REVISED LOD
REMOVED ROAD
REMOVED
ROAD
REMOVED CULVERT
AND GULF STREAM
CROSSING
REMOVED ROAD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REMOVED CULVERT CROSSING
PREVIOUS
POND
REVISED POND
PREVIOUS TREE CLEARING AREA, NO LONGER BEING REMOVED
PREVIOUS TREE CLEARING AREA, NO
LONGER BEING REMOVED
1"=100'
WK MB
NC
EXHIBIT1.2
AREA 2 COMPARISON MAP
0 1" 2"
05/12/21
LITCHFIELD, CT
LITCHFIELD
SOLAR
NOT FOR
CONSTRUCTION
2-298 ROSSI RD
TORRINGTON, CT 06790, USA
LAT: 41.794157°N
LON: 73.168028°W
WK MB
NC
CP
MA
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POND-2A
AREA 3
GU
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ST
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100' VERNAL POOL
ENVELOPE (VPE)
VERNAL POOL 1
G
U
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100' GULF STREAM
BUFFER
PREVIOUS LOD
PREVIOUS LOD
PREVIOUS LOD
REVISED LOD
REMOVED CULVERT
AND GULF STREAM
CROSSING
REMOVED ROAD
REVISED LOD
PREVIOUS TREE CLEARING AREA, NO
LONGER BEING REMOVED
1"=100'
WK MB
NC
EXHIBIT1.3
AREA 3 COMPARISON MAP
0 1" 2"
05/12/21
LITCHFIELD, CT
LITCHFIELD
SOLAR
NOT FOR
CONSTRUCTION
2-298 ROSSI RD
TORRINGTON, CT 06790, USA
LAT: 41.794157°N
LON: 73.168028°W
WK MB
NC
CP
MA
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