20150392 Ver 1_More Info Received_20150526

Price, Zan (George)
From: Clement Riddle <clement @cwenv.com>
Sent: Tuesday, May 26, 2015 2:22 PM
To: Price, Zan (George); Kevin Mitchell
Cc: david.w.brown @usace.army.miI
Subject: RE: Additional Information - Mill Pond Sewer Line - DWR 15 -0392
Attachments: 1.18- 03_StreambankProt- 3.pdf; Stream Crossing with Matting.pdf
Za n,
This email is intended to address the two written comments as shown below from DWR's May 18, 2015 email. Item
three was discussed during our recent phone conversation.
1. Please find an updated cross section for the sewer crossing of Mill Pond Creek (StreambankProt -3). Rip -rap will be
necessary for the stream crossings at 7, 9, 14, and 15. We believe that the new detail sheet meets the permit
requirements. We have also included a new cross section (crossing with matting) showing the temporary impacts during
construction of the smaller streams. This crossing is intended for all other crossings.
2. In order to be conservative, these impacts at the locations of existing culverts are shown as temporary
impacts. During construction the sewer line utility may go under an existing culvert. However, there may be a
temporary effect on the culvert or stream during this process if the culvert is damaged. It is possible that not all of these
impacts will be needed. We would like to leave these potential temporary impacts in the PCN application.
3. Mud Creek crossing will be a directional bore under the stream. No temporary impacts should occur to Mud Creek.
Please do not hesitate to contact me if you have any questions or comments or need any additional information.
Clement
&ear\NaLer
32 Clayton Street
Asheville, NC 28801
Office: 828 - 698 -9800
Mobile: 828 - 606 -5168
[e-mail]
From: Price, Zan (George) [mailto: Zan. Price(d)ncdenr.gov]
Sent: Monday, May 18, 2015 12:16 PM
To: Kevin Mitchell; Clement Riddle
Cc: maiones @hendersoncountync.org; david.w. brown (a)usace.army.mil; Leslie, Andrea J
Subject: Additional Information - Mill Pond Sewer Line - DWR 15 -0392
The Division of Water Resources (DWR) has performed a review of the 401 Water Quality Certification application
submitted for the referenced project. Please provide additional information so we can complete our review.
1. The Stream Crossing Detail provided on Figure 3.1 shows Class B Rip Rap from the typical high water depth to a
minimum of 6- inches below the stream bed. The DWR considers this a permanent impact. Please update the

impact tables on page 5 of the Pre - Construction Notification (PCN) form to reflect the proposed permanent
impacts. Alternatively, please update the Stream Crossing Detail to illustrate a temporary impact (e.g., remove
rip rap below the ordinary high water mark). Feel free to contact me for clarification on temporary and
permanent impacts.
Several of the listed stream impacts appear to occur under existing culverts as illustrated on the included impact
maps. Please clarify if the proposed sewer line will be installed under existing culverts and if the impact lengths
can be minimized.
Please provide this additional information by June 18, 2015.
Regards,
Zan Price, P.E.
NCDENR - Division of Water Resources
Water Quality Regional Operations Section
Asheville Regional Office
2090 U.S. Hwy. 70
Swannanoa, N.C. 28778
ph.: 828 - 296 -4500
fax: 828 - 299 -7043
email: zan.price @ncdenr.gov
website: www.ncwaterguality.org
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