20131013 Ver 1_More Info Received_20131028

Strickland, Bev
From: Dovano.Boyd
Sent: Tuosday, November 12.20133:53PIVI
To: Strickland, Bev
Subject: FYV: Allen Driveway 13'1013
From: Oevane,Boyd
Sent: Monday, October 28, 2013 11:43 AM
To: KevnVarneU
Cm: Smith Cherh L
Subject: RE: Allen Driveway
| recommend allowing a preformed scour hole in your situation because | think it is the appropriate treatment for your
client's site. We allow it to be used by the DOT and I think this technology would meet the nutrient removal conditions
in the Tar-Pamlico NSW rules. I will be working on creating criteria that would enable use of this technology in other
situations similar to yours where there is very low nitrogen contributions. See chapter 4 in the attached document for
the specifications for using the scour hole. Call if you have questions. Also, please check your slope calculations tomake
sure the 1Ocfs/secQ1O will not be exceeded as specified in the DOT manual.
ces%20Tnn|bnx%20'%20W1arch96202008.odf
Boyd DeVane
N[ Division of Water Resources
1617 Mail Service Center
Raleigh, N[27699-1617
919-807-6373
Fax: (gIg) 807-6494
NEW Website:
Notice: E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and
therefore may be disclosed tothird parties.
From: Kevin Varne|
Sent: Friday, October 25, 2013 2:16 PM
To: Oevane,Boyd
Cm: ]effHarbour
Subject: RE: Allen Driveway
| am good with a preformed scour hole. Been a while since | have done one. Is the spreadsheet for design still available
that you can pass on to me?
Si
Stocks Engineering, PA

J. Kevin Varnell
From: Devane, Boyd [ mailto:boyd.devaneCa)ncdenr.Qov]
Sent: Friday, October 25, 2013 12:30 PM
To: Kevin Varnell
Subject: Allen Driveway
I received your profiles. I'm leaving now but will look at them Monday. I have received permission to not require the
level spreaders on the site as long as we can show that diffuse flow will occur. I was leaning toward using preformed
scour holes.
Boyd DeVane
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699 -1617
919 - 807 -6373
Fax: [phone]
NEW Website: http: / /portal.ncdenr.org /web /wq /ws /su
Notice: E -mail correspondence to and from this address may be subject to the North Carolina Public Records Law and
therefore may be disclosed to third parties.