20090366 Ver 4_Email_20110727

,._~.. ~~
Ridings, Rob
From: Montague, Heather W
Sent: Wednesday, July 27, 2011 12:24 PM
To: Ridings, Rob; Alsmeyer, Eric C SAW
Cc: Moore, David B; Rivera, Ferdinand N; Phipps, Dawn; Murray, Christopher A
Subject: RE: B-3919 (Bridge No. 140) -Corrected Information
Note attachment three in previous email. Detail C: STA. -L- 37+25 TO STA. -L- 38+19 RT
Linear type is PSRM not CL. B Rip Rap. Please edit any copies you print accordingly. Thanks.
-----Original Message-----
From: Montague, Heather W
Sent: Wednesday, July 27, 2011 12:07 PM
To: Ridings, Rob; 'Alsmeyer, Eric C SAW'
Cc: Moore, David B; Rivera, Ferdinand N; Phipps, Dawn; Murray, Christopher A
Subject: B-3919 (Bridge No. 140) - Corrected Information
Reference: DWQ Project No. 20090366, 20090366 ver. 2, 20090366 v.3 NBR,
Written authorization from the USACE was not requested
Rob and Eric-
/ C7, -
20090366 v.3)
Bridge replacement work recently finished for Bridge No. 140 over Smiths Creek on SR 2053
(Janes Dairy Road), Wake County within the Neuse River Basin, TIP B-3919. In the final days
of construction, repeat heavy rains revealed that the original design for the ditch outlet at
37+75Rt within the SE quadrant was causing a 'Hydraulic Trespassing' issue for the adjacent
property owner. Due to pre-existing topography with a low spot in this property owner's yard,
water exiting this ditch contributed to significant flooding next to this house.
In order to correct this situation, the ditch was adjusted horizontally to take the runoff
under the bridge to outlet by the stream. Therefore, it was necessary to revise the original
design by deleting the energy dissipator pad at this location and replacing it with a longer
grass-lined ditch (with a rip rap pad at the tail end) that extends to adjacent stream bank.
This is a change in the "buffer design" as discussed in the field with Rob Ridings on
07/08/11: however this ditch was constructed through previously permitted buffer footprint or
beneath the bridge deck, so no new buffer impacts result. Note that the plan depicts getting
outside of the ROW into the unpermitted buffer to construct the ditch. However, this was not
necessary in order to install the ditch and all work was done within previously permitted
construction limits. The rip rap placed on the bank was installed above the ordinary high
water mark, so there was no additional impacts to surface water resulting from this revision.
The Division is providing this email as documentation of corrected information for your
records. See attached revised plan sheet/cross-section/ditch details), blow-up of revised
ditch outlet, and a couple of past-construction photos from the SE quadrant.
-Heather Montague
NCDOT DIV 5 Environmental Specialist
[phone] office
[phone] cell
1

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