20130223_RE U-2524D - Greensboro Outerloop Culvert - Back Fill_20151026 (2)

Wanucha, Dave
From: Bailey, David E SAW <[e-mail]>
Sent: Monday, October 26, 2015 8:45 AM
To: Lauffer, Matthew S; Wanucha, Dave; Wilson, Travis W.; Gary Jordan
Cr. Elam, William H; Lee, Craig J; James Byrd
Subject: RE: U-2524D - Greensboro Outerloop Culvert - Back Fil) (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Matt,
Thanks for your email. For the Corps' purposes, the 1' burial of culverts >48" in diameter is intended to 1) prevent
destabilization of the stream up and downstream of the structure and 2) allow for aquatic life passage. As for # 1, we
would expect that the culvert would be buried 1' unless there is reason to suspect that burial would result in stream
destabilization (and if so, that it could not be prevented by cross veins or other natural channel design-type structures
around the culvert inlet and/or outlet). Regarding # 2, and specifically backfilling, the Corps will defer to the experience
of the NCWRC and USFWS. 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: [e-mail]
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we
continue to do so, please complete the Customer Satisfaction Survey located at
http://corpsmapu.usace.army.mil/cm_apex/f?p=136:4:0.
-----Original Message-----
From: Lauffer, Matthew S [mailto:[e-mail]]
Sent: Friday, October 23, 2015 1:21 PM
To: Wanucha, Dave; Bailey, David E SAW; Wilson, Travis W.; Gary Jordan
Cc: Elam, William H; Lee, Craig J; James Byrd
Subject: [EXTERNAL] RE: U-2524D - Greensboro Outerloop Culvert - Back Fill
Gentleman

After some on-going discussions with some of you, I would like to gather input on the need to backfill culverts for the U-
2524D project.
There are some long culverts on this project as identified below and shown on the attachment. None of the culverts
have high flow barrels. Would you all be willing to comment on the benefit of burying these culverts a foot and
backfilling with stream-bed material?
We are mostly wanting to know the following:
Do you see a value in burying the culverts if they are over 1,000 feet in length?
If we do bury them would you want them backfilled?
The location of the culverts is near in Greensboro at the intersection of Lawndale and the proposed Greensboro
outerloop.
Blocked https://www.google.com/ma ps/@36.1406946,-79.8331553,18z?h 1=en
Thanks forward for your input. If you believe it would be beneficial to setup a meeting to discuss, we can do that as
well. Let me know if additional documentation would be helpful for consideration purposes.
Regards,
Matt
Culvert ID
Length (Feet)
Size

Slope
Burial
Sills
Baffles
Approximate Width of Stream
Drainage Area (Square Miles)
Drainage Area
Acres
% Impervious
Watershed Type
Notes
Culvert 1
1430
8' X 8'
1.04%
1'
Yes
No
5-6 '
0.15
98
31%
Urban
Connects with 2A
Culvert 2A
3

363
11'X9'
1.86%
1'
Yes
Yes (25 foot Centers)
Confluence of two streams - 4-5' and 5-6'
0.38
243
32%
Urban
Connects with 1 and 2B
Culvert 2B
712
11'X9'
0.50%
1'
Yes
No
Confluence of two streams - 4-5' and 5-6'
0.38
243

32%
Urban
Connects with 2A
Culvert 3
1214
11'X9'
0.59 %
1'
Yes
No
10'
1.12
716
13.10 %
Urban
Culvert 4
335
7'X8'
2.07 %
1'
Yes
Yes (20 foot Centers)
6-7'
0.22
140
5

27.30%
Urban
Backfill
Matthew (Matt) Lauffer, PE, CPM
Asst. State Hydraulics Engineer
Central Region, Divisions 5,7,8,9
Highway Stormwater Program
Hydraulics Unit
North Carolina Department of Transportation
Phone: [phone]
Cel I: 919-621-0443
Fax: [phone]
Email: [e-mail] <mailto:[e-mail]>
Mail:
1590 Mail Service Center
Raleigh, NC 27699-1590
Del ivery:
1020 Birch Ridge Dr.
Raleigh, NC 27610
From: Lauffer, Matthew S
Sent: Tuesday, September 08, 2015 10:31 AM
To: '[e-mail]'
Cc: Elam, William H; Lee, Craig J; [e-mail] <mailto:[e-mail]> ; James
Byrd
Subject: RE: U-2524D - Greensboro Outerloop Culvert Summary (UNCLASSIFIED)
Dave,
6

Hope you enjoyed your weekend. These culverts will be single barreled culverts and will not have high and low flow
barrels. Stabilization of the culvert entrance and exit will be part of the design. I have attached a plan view layout of the
culvert configuration for the Lawndale interchange. The plan is to backfill the culverts with alluvial sediments that are
obtained during the excavation of the proposed culverts.
I am checking on the permit modification submittal date and will send that as soon as I know.
Please let me know if you have additional questions.
Regards,
Matt
Matthew (Matt) Lauffer, PE, CPM
Asst. State Hydraulics Engineer
Central Region, Divisions 5,7,8,9
Highway Stormwater Program
Hydraulics Unit
North Carolina Department of Transportation
Phone: [phone]
Cel I: 919-621-0443
Fax: [phone]
Email: [e-mail] <mailto:[e-mail]>
Mail:
1590 Mail Service Center
Raleigh, NC 27699-1590
Del ivery:
1020 Birch Ridge Dr.
Raleigh, NC 27610
From: Bailey, David E SAW [mailto:[e-mail] <mailto:[e-mail]> ]
Sent: Tuesday, September 08, 2015 8:56 AM
To: Wanucha, Dave; Lauffer, Matthew S
7

Cc: Elam, William H; Lee, Craig J
Subject: RE: U-2524D - Greensboro Outerloop Culvert Summary (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Hi all. No additional comments at this time. Thanks for the coordination.
-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: [e-mail]
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we
continue to do so, please complete the Customer Satisfaction Survey located at
Blockedhttp://corpsmapu.usace.army.mil/cm_apex/f?p=136:4:0.
From: Wanucha, Dave [mailto:[e-mail] <mailto:[e-mail]> ]
Sent: Thursday, September 03, 2015 8:38 AM
To: Lauffer, Matthew S
Cc: Elam, William H; Lee, Craig J; Bailey, David E SAW
Subject: [EXTERNAL] RE: U-2524D - Greensboro Outerloop Culvert Summary
Hi Matt,
8

Thanks for sending the data. The proposed sills and baffles appear to be consistent with DOT's guidance on the subject.
Will these culverts possess high flow barrels and flood plain benches, and if so, what type of material will be used for
backfill (if they are planned to be backfilled)?
Do you have a time estimate for when a permit modification will be submitted for the D section?
I have copied Dave Bailey with the Corps for his review and comments.
Dave B.,
These are the culvert data of which we spoke yesterday.
Dave W
Dave Wanucha
NC DENR Winston Salem Region Office
NC Division of Water Resources
Transportation Permitting Unit
450 W. Hanes Mill Rd, Suite 300
Winston-Salem, NC 27105
Cell [phone]
Office [phone]
[e-mail] <mailto:[e-mail]>
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: Lauffer, Matthew S
Sent: Tuesday, September 01, 2015 4:10 PM
To: Wanucha, Dave
Cc: Elam, William H; Lee, Craig J; Lauffer, Matthew S
Subject: U-2524D - Greensboro Outerloop Culvert Summary
Importance: High
H i Dave,
Per our phone conversation a couple weeks ago, I wanted to let you know what we were going to recommend for the
culverts on U-2524D near Lawndale with respect to sills and baffles.
The following is a summary of the structures and proposed configurations:
Culvert ID
Length (Feet)
Size
Slope
Burial
Sills
Baffles
Approximate Width of Stream
Drainage Area (Square Miles)
% Impervious
Watershed Type
Notes
Approximate Location of Inlet
Approximate Location of Outlet
Culvert 1
10

1430
8' X 8'
1.04%
1'
Yes
No
5-6 '
0.15
31%
Urban
Connects with 2A
Click Here.
<https://www.google.com/maps/di r/Lawndale+Baptist+Church,+3505+Lawndale+Dr,+Greensboro,+NC+27408,+U nited+
States/36.1404144,-79.8387639/ @ 36.1395152,-
79.8384438,261m/data=!3m1! 1e3!4m8!4m7! 1m5! 1m1! 1sOx88531e993d24b8a1:Ox69bfa1fe523c09f9! 2m2! 1d-
79.8237227!2d36>
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1415784,-79.8343776/36.1415459,-
79.8343776/@36.1414452,-79.8346833,261m/data=!3m1! 1e3?hl=en>
Culvert 2A
363
11'X9'
1.86%
1'
Yes
Yes (25 foot Centers)
Confluence of two streams - 4-5' and 5-6'
0.38
32%
Urban
ii

Connects with 1 and 2B
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1415784,-79.8343776/36.1415459,-
79.8343776/@36.1414452,-79.8346833,261m/data=!3m1! 1e3?hl=en>
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1414578,-79.8330201/36.1414582,-
79.8330209/@36.1415499,-79.8327706,358m/data=!3m1! 1e3?hl=en>
Culvert 2B
712
11'X9'
0.50%
1'
Yes
No
Confluence of two streams - 4-5' and 5-6'
0.38
32%
Urban
Connects with 2A
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1414578,-79.8330201/36.1414582,-
79.8330209/@36.1415499,-79.8327706,358m/data=!3m1! 1e3?hl=en>
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1415784,-79.8343776/36.1415459,-
79.8343776/36.1421459,-79.8305943/@36.1422504,-79.8313856,131m/data=!3m1! 1e3!4m2!4m1!3e2?hl=en>
Culvert 3
1214
11'X9'
0.59 %
1'
Yes
No
12

10'
1.12
13.10 %
Urban
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1404562,-79.8341627/36.1404216,-
79.8341519/@36.140206,-79.8343969,179m/data=!3m1! 1e3?hl=en>
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1415784,-79.8343776/36.1415459,-
79.8343776/36.1421459,-79.8305943/@36.1422504,-79.8313856,131m/data=!3m1! 1e3!4m2!4m1!3e2?hl=en>
Culvert 4
335
7'X8'
2.07 %
1'
Yes
Yes (20 foot Centers)
6-7'
0.22
27.30%
Urban
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1426615,-79.8301804/36.141229,-
79.8301446/@36.1413951,-79.8293221,716m/data=!3m1! 1e3?hl=en>
Click Here <BlockedBlockedhttps://www.google.com/maps/dir/36.1426405,-79.8302394/36.1422073,-
79.8303359/@36.1413951,-79.8293221,523m/data=!3m1! 1e3?hl=en>
13

You will notice that the lengths of the culverts are long and that sills are used on all culverts and all culverts will be
buried a foot. Baffles will be placed on Culvert 2A and Culvert 4 where slopes are near 2%. Baffles will be placed across
the entire box with no additional reduction in stream width. Stream pictures are below for reference.
Please let me know if you concur with the proposal or would like to discuss further. My phone number is below.
Regards,
Matt
Stream on Culvert 1
cid:image001.png@01DOEA14.1DF73490
Stream u/s stream of Culvert 2A
cid: i mage002. png@01DOEA14.1DF73490
Stream U/S of Culvert 3
cid: i mage003. png@01DOEA14.1DF73490
Stream Up stream of Culvert 4
cid:image004.png@01DOEA14.1DF73490
Matthew (Matt) Lauffer, PE, CPM
Asst. State Hydraulics Engineer
14

Central Region, Divisions 5,7,8,9
Highway Stormwater Program
Hydraulics Unit
North Carolina Department of Transportation
Phone: [phone]
Cel I: 919-621-0443
Fax: [phone]
Email: [e-mail] <mailto:[e-mail]>
Mail:
1590 Mail Service Center
Raleigh, NC 27699-1590
Del ivery:
1020 Birch Ridge Dr.
Raleigh, NC 27610
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third
parties.
Classification: UNCLASSIFIED
Caveats: NONE
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third
parties.
Classification: UNCLASSIFIED
Caveats: NONE
15