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WILLIAMSBURG PLANTATIONS RECREATION AREA
WETLAND IMPACT NARRATIVE
March 2023
Williamsburg Plantation Recreation Area is a section of the overall project previously
permitted as Williamsburg Plantation. The project is located off of the end of Western Boulevard
in Jacksonville. The project drains to New River which is classified as C;NSW.
As stated in The City of Jacksonville's transfer letter, The City purchased 400 acres of land
that falls under the Corps Permit Action ID# SAW - 2010 - 01947. Impacts H, I and N are the
only impacts proposed inside the City's property. Each of these impacts were approved in
September 2013. The final layout for these impacts are shown in the attached maps. This layout
was based on the approved impacts and permit documents.
A modification to the original permit is required for a change of use. The new permit will
now need to include land use for recreational fields. The attached impact maps show a
preliminary arrangement of the recreational area for the site. The purpose of showing the
recreational area was to express the intended land use for this site. It is not intended as a
reflection of the final arrangement.
Great care was taken in both the originally approved documents and attached plans to
mitigate impact area and loss of water and wetlands. A key example in this section is with impact
"N". The location of this impact was chosen due to it being a narrow section of stream to cross,
and more importantly because it contained an existing crossing. Aerial photography shows a dirt
road crossing this stream as far back as October 1971. This aerial photo has been attached to the
submittal. An overall upgrade to this existing crossing and an aluminum plate bridge design will
go a long way to ensure the long-term health and stability of this existing stream crossing. The
final layout of these crossings were designed in such a way as to minimize impact length further
than the previous approved permit listed. The proposed contours are based off of 3:1 slopes
going from the edge of the road shoulder down to the top of the headwalls. 10 feet of temporary
impacts are added off the edge off the proposed contours to allow project for expected work area
needed to finish the design shown. Due consideration will be taken to ensure work is done in
"the dry" and quickly as possible. The plans themselves contain additional notes and information
for impact notes and sequencing. The other crossings "H" and "I" follow similar methodology
for minimize impacts and ensuring stream stability.
Compared to the originally approved crossing "N" and "I", an aluminum plate bridge is
now proposed. Further below is a chart comparing impact amount previously approved vs the
final impact amount as described in the attached plans. The stream impacts "N" and "I" have
both been negated due to the bridge design. Overall, all of the current crossing designs follow the

original intent and design of the permit that was approved in 2013. At the same time,
approvements have been made to each of these crossings to allow for further mitigation and a
more fine-tuned engineering design.
In addition, crossings J, K, L and M are no longer being constructed. In total, the stream
crossings have been reduced by 449 linear feet. For additional information, see Permit #SAW -
2010 - 01947 and attached forms.
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Crossing Impact Amount Approved (Permanent) ' Amount Proposed (Permanent)
Stream Impact "I"
154 linear feet
0 linear feet
Stream Impact "N"
140 linear feet
0 linear feet
Stream Impact "M"
— _
90 linear feet
N/A
........... ..._.
-
Stream Impact "K"
65 linear feet
N/A
*Amount Approved taken directly from the conditions of certification table for permit
SAW-2010-0147
**Impact "H", "J" and "L" are strictly wetland crossings and were not included in the
above table.
Engineer. agm.narratives. armycop.PermitTransferRecreationArea.3.17.23

Williamsburg, Plantation -Recreational Area
1971 Aerial Photography
Gum Branch Road — Existing Road Crossing