NCW - Timbermill Wind Change Log March 2024 - Culverts Only (2)

3-22-2024
Existing Culvert Replacements – Version 1

Timbermill Wind
Proposed Design Change Log
March 22, 2024
Existing Culvert In-Kind Replacements - Version 1

3-22-2024
Existing Culvert Replacements – Version 1
Changes presented by Timbermill Wind during 3/14/2024 discussion
January 2024 Self-Reported Permit Violations
Proposed Design
Change
Narrative Description Discussed and
Visited in Field on
3/8/2024 Site Visit
Supporting Documentation
Provided
Authorization
Received

B. MET Tower
Access Road
Shift
Tab 1 of Site Visit Booklet; Like-kind
culvert replacement of Culverts C-
3020, C-3021, and C-3022 to stay
on existing farm road and reduce
the number of new crossings.
Yes • Tab 1 of Site Visit Booklet
• Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending

Final Engineering Design and Unforeseen Field Conditions
Proposed Design
Change
Narrative Description Discussed and
Visited in Field on
3/8/2024 Site Visit
Supporting Documentation
Provided
Authorization
Received
I. Dirt Road 3 – Omit
Culvert C-79
Tab 4 of Site Visit Booklet; Like-kind
culvert replacement of Culverts C-3000,
C-3001, C-3002, and C-3003 to stay on
existing farm road and reduce the number
of new crossings.
Yes • Tab 4 of Site Visit Booklet
• Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending

3-22-2024
Existing Culvert Replacements – Version 1
Proposed Design
Change
Narrative Description Discussed and
Visited in Field on
3/8/2024 Site Visit
Supporting Documentation
Provided
Authorization
Received
J. Dirt Road 2 –
Culvert C-10 Shift
Tab 4 of Site Visit Booklet; Like-kind
culvert replacement of Culverts C-118
and C-119 to remain on existing farm road
and reduce the number of new crossings.
Yes • Tab 4 of Site Visit Booklet
• Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending
M. Replace Existing
Drain Tile to T37
and T42
Tab 4 of Site Visit Booklet; Like-kind
culvert replacement of Culverts C-3010,
C-3011, C-3012, C-3013, C-3014, and C-
3015 that have deteriorated since the
initial permit submittal.
Discussed,
not visited

• Tab 4 of Site Visit Booklet
• Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending
P. T45 Access Road
Realignment
February 21, 2024, agency meeting; Like-
kind culvert replacement of Culverts C-
3016, C-3017, C-3018, and C-3019 to
reduce overall project impacts.
Discussed,
not visited
• Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending
Q. Existing Farm
Road, east of T10
Utilizing an existing farm road to alleviate
site safety concerns by providing an exit
route for empty trucks to prevent two-way

3-22-2024
Existing Culvert Replacements – Version 1
Proposed Design
Change
Narrative Description Discussed and
Visited in Field on
3/8/2024 Site Visit
Supporting Documentation
Provided
Authorization
Received
R. Weyerhaeuser
Existing Culvert
Replacements
Replacing existing culverts on the
Weyerhaeuser tract with like-kind
replacements of the same length.
Proposed replacement of existing
collapsed and damaged culverts C-3008
and C-3009. Notice and approval of
replacement has been communicated
with Weyerhaeuser.
Yes • Culvert Replacement
Supporting Documentation
(03-22-2024)
• Meeting summary and
PowerPoint (03-14-2024)
Pending