20130845 Ver 1_On Hold Response B-5418 Pitt 50_20130910

SNC

TATE OF ORTH AROLINA
DT

EPARTMENTOFRANSPORTATION

P .
AT MCCRORYANTHONY J TATA
G S
OVERNOR ECRETARY

September 10, 2013

Garcy Ward
NC DENR - Division of Water Resources
943 Washington Square Mall
Washington, NC 27889

Subject: The replacement of Bridge No. 50 over Johnsons Mill Run on NC 33 in Pitt County;
TIP B-5418; DWQ project # 13-0845

Dear Mr. Ward:

We have reviewed your comments for the above referenced project. Please find responses as follows:

Ditches and Swales.
1. New ditches are shown on the BSR but not on the plan sheet. The BSR
references Detail 2, however, that nor any other information about the ditches is included with the
application. According to 15A NCAC 2B.0259 (6), new ditches are allowable only if they provide
for nitrogen control and attenuate flow. Grassed swales can be used to meet these requirements at a
ratio of 100 linear feet of swale per acre of drainage to each respective new ditch line. If swales are
to be used, please provide the necessary information regarding swale dimensions and drainage area.

Response:
Regarding this project, theBSR is for informational purposes only and does not
accurately represent what will be constructed in the field. Please refer to what is shown on the
permit plan for what is proposed to be constructed. There will be no new ditches on this project.

Pipes.
2. The plan sheets show removal of two pipes under the access driveways on the north side of
the bridge. These driveway accesses are often relocated to accommodate longer guardrails. Please
provide any information regarding the replacement of these pipes including sizes and location.
There is also a pipe discharge in the southwest quadrant that is in disrepair. This pipe is not shown
on the plan sheet. Please provide any information regarding the replacement of this pipe.

Response:
The plan sheets actually show removing the existing pipes and replacing them with two
longer pipes. It may be hard to see because the new pipes are shown on top of the existing pipes,
but the new pipes are the solid black lines that are permit
plans. Regarding the pipe in the southwest quadrant, the permit sheet has been revised to show
removal and replacement of the pipe.

If you have any questions or require additional information, please contact Maria Rogerson at 252-
439-2830.

Cc: Jay Johnson, DEO
Tom Steffens, USACOE (electronic copy only)
Sonia Carrillo, DWR, TPU (electronic copy only)
File