20150610 Ver 1_More Info Received_20150818

Strickland, Bev
From: Cahoon, Steve <Steve.Cahoon @duke - energy.com>
Sent: Tuesday, August 18, 2015 11:27 AM
To: Homewood, Sue
Cc: David.e.Bailey2 @usace.army.mil
Subject: RE: Rail widening
Hi Sue,
Please see our response to your question
We have re- examined our proposed erosion control measures adjacent to the existing stream bank, particularly in the northernmost
areas of the project. The proposed slopes in this vicinity are 2:1. We considered another approach consisting of grading a bench into
this fill slope and constructing diversion ditches to carry runoff north and south to stabilized riprap outlets, but doing so puts our
disturbance limits even closer to the stream and also steepens our fill slopes. Our ultimate goal is to minimize disturbance and protect
the stream. We believe the best way to do this is to correctly install and diligently maintain the proposed silt fence and rock outlets, as
currently shown on the drawings, in conjunction with appropriate slope stabilization practices.
We will monitor this area during construction and if conditions change, we will implement additional erosion control practices to provide
stream protection, including the option of dewatering the section of the stream along this fill slope.
If you have any further questions or need other information please contact me.
Thanks,
Steve
From: Homewood, Sue [ mailto:sue.homewood @ncdenr.gov]
Sent: Friday, August 14, 2015 8:39 AM
To: Cahoon, Steve
Subject: RE: Rail widening
Not yet. Bob was going to get back to me after talking to the designer
Sent 9irom my Verizon Wireless 4G f. 1'F smarlphone
-- - - - - -- Original message -- - - - - --
From: "Cahoon, Steve" <Steve. Cahoonaduke-enenm corn>
Date: 08/14/2015 8:18 AM (GMT- 05:00)
To: "Homewood, Sue" <sue.homewoodancdenr.�4ov>
Subject: RE: Rail widening
'
From: Homewood, Sue rmailto :sue.homewood(d)ncdenr.govI
Sent: Thursday, August 13, 2015 4:16 PM
To: Cahoon, Steve
Subject: RE: Rail widening

Sue Homewood
NC DENKVVinston-Sa|em Regional Office
DivisionofVVaterKesources — VVater[Wa|ityPrograms
45OVV. Hanes Mill Rd, Suite 3OO (Please note nny new contact information)
Winston Salem NC 27105
M,,'M
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Cahoon, Steve [nlai Ito: Steve. Cahoon Kbduke'enerqY.coml
Sent: Wednesday, ]uh29,2015]:00 PIVI
To: Homewood, Sue
Cm: Bailey, David E SAW
Subject: RE: Rail widening
As you requested attached is a drawing and a word document addressing your questions below regarding the rai'
extension project. Please contact me if you have any other questions need any further information.
am
From: Homewood, Sue [nlai|tooue.honlewood(d)ncdenr.qovl
Sent: Wednesday, 3uh08,20155:05PIVI
To: Cahoon, Steve
Cm: Bailey, David ES/YW
Subject: Rail widening
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Steve
A couple questions/issues on this application:
For the question about impervious surfaces on Page 8, typically road fill is considered impervious because it is
compacted and there is no vegetation. The stormvxater management plan would most likely be that stormvxater runs
off the rail line as diffuse flow down the vegetated shoulders and is treated through that process before it reaches
streams orwetlands.

I'd like to see more detail about how the stream will be protected during construction of the fill slopes that are
immediately adjacent to the streams. We have found that working that close to a stream, on a steep slopes, often
compromises the stream bank and /or impacts the stream from sediment loss during construction. Can you provide a
narrative, or more detailed drawings about work in this area. Maybe a more detailed construction sequence. When
I've had similar projects working so close to a stream, I've suggested that the stream be dewatered, so if there is
inadvertent impact it is easily contained and repaired /removed without the stream being impacted. Would that be
something that Duke would be willing to consider in these areas?
Lastly, at the northern culvert the stream takes a 90 degree bend immediately upon exiting the culvert. This is usually a
recipe for long term instability of the stream. Can we discuss some options for that area such as re- alignment of the
stream, or angling the culvert, or other ideas you may have.
E -mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
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