20160995 Ver 1_More Info Received_20161031

Strickland, Bev
From: Cindy Lancaster <[e-mail]>
Sent: Monday, October 31, 2016 1:19 PM
To: Bailey, David E SAW
Cc: Homewood, Sue
Subject: RE: PCN Forms/Na rrative&Exi bits for Lake Miller Permanent Dam Breach, MillerCoors
David --
Following up on our phone conversation this morning, here is a summary of estimated riprap volumes:
We will itemize the check dam and breach channel separately as 990 s.f. for the check dam and 570 s.f. for the portion
of the breach channel riprap within the OHWM for the lake. The estimated riprap volumes are 134 c.y. for the check
dam and 53 c.y. for the upper portion of the breach channel.
As I mentioned on the phone, there is no plan to remove the check dam because MillerCoors is trying to close out their
involvement on the site as soon as possible. We expect a new stream channel to erode itself through the accumulated
bottom sediments back to approximately the historical channel grade, but there is no expectation of severe headcutting
because the check dam will provide grade control. We computed the estimated sediment volume resulting from
eroded stream channels through the lake bottom as compared to the available storage volume between the existing
pond bottom and the elevation of the top of the check dam. Although they were rough calculations, the intent was to
be conservative and allow for a factor of safety in setting the elevation of the check dam.
The purpose of the check dam is to make sure those eroded soils stay within the pond bottom area instead of migrating
downstream beyond the breach.
Feel free to give me a call if you have other questions. When you have decided the most appropriate NWP for us to use
let me know and we will re -submit the PCN forms, plus an updated drawing showing OHWMs.
Thanks,
Cindy
Cynthia C. Lancaster, P.E., CFM
JEWELL Engineering Consultants, P.C.
Phone: [phone], ext. 102
-----Original Message -----
From: Bailey, David E SAW[mailto:[e-mail]]
Sent: Friday, October 28, 2016 12:46 PM
To: Cindy Lancaster
Cc: Homewood, Sue
Subject: RE: PCN Forms/Na rrative&Exibits for Lake Miller Permanent Dam Breach, MillerCoors
Hi Cindy, and thanks for the PCN and attached plans. A few questions for you:
1) Would it be possible to overlay the current Ordinary High Water Mark (OHWM) of the pond and the start of the
stream channel downstream of the dam on a planview sheet, and then also overlay the footprint of fill occurring with
the ordinary high water mark on either side of the dam?

2) On the PCN can you itemize out fill due to the checkdam from fill due to rip rap lining of channel? Just to be clear, the
only fill that would require authorization would be the portion of the checkdam or rip rap lining that are within the
existing pond or stream OHWM.
3) Please include the volume of fill (in cubic yards) of material proposed for the check dam within the existing OHWM of
the pond.
4) Will the check dam be removed? If so, what is the timing of the removal?
5) Is any stream channel restoration/re-establishment proposed within the pond bed upon completion of the dam
breach? Also, will any grade controls within the pond bed be necessary to prevent severe headcutting through the highly
erodible sediments as the stream channel forms?
Responses to the above will help determine if NWP 27 is justifyable for this project, or if another NWP is better suited.
Thanks, and please let me know if you have any questions.
-Dave Bailey
David E. Bailey, PWS
Regulatory Project Manager
US Army Corps of Engineers
CE -SAW -RG -R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Phone: [phone], Ext. 30.
Fax: [phone]
Email: David. E. [e-mail]
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-----Original Message -----
From: Cindy Lancaster[mailto:[e-mail]]
Sent: Friday, October 14, 2016 10:48 AM
To: Bailey, David E SAW<[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: [EXTERNAL] PCN Forms/Na rrative&Exibits for Lake Miller Permanent Dam Breach, MillerCoors
David -
Attached is a PCN for the proposed dam breach at Lake Miller on the MillerCoors property in Eden, NC.
We are mailing the required four copies of the submittal to NC DEQ for the water quality certification.
Thanks,

Cindy
Cynthia C. Lancaster, P.E., CFM
Water Resources Engineer
PO Box 2294
Kernersville, NC 27285-2294
Phone [phone], ext. 102
[e-mail] <mailto:[e-mail]>
Blockedwww.jewellengineering.pro <Blockedhttp://www.jewellengineering.pro>
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