20081602_Email_20101124

Wainwright, David
Frlom: Turchy, Michael A
Sent: Wednesday, November 24, 2010 11:33 AM
Tci: Biddlecome, William J SAW; Wainwright, David; [e-mail]; Brittingham,
Cathy; Lane, Stephen
Subject: RE: R-2414 Culvert Material Revision
Attachments: R-2414 B Drawing Revisions due to RCBC to Aluminum-Nov 2010.pdf
F(, llow Up Flag: Follow up
Flag Status: Flagged
I
Per the requests, attached are the revised drawings that display the changes at the culvert
sites (Sites 3, 6 & 7) from a reinforced concrete box culvert (RCBC) to an aluminum culvert
firr R-2414 B (US 158 in Camden County.)
i
A?, mentioned in my previous message, there will be a change in the width of the structure.
AFparently the corrugated nature of the aluminum vs. the smoothness of a concrete culvert
creates resistance affecting the hydraulic models, and therefore the width of the structure.
Again the length of the structure will not change, but the following widths have been
revised:
Site 3
0].d: 1@8'x6'. RCBC
Revised: 1@15'4"x 6'5" Aluminum
j
Site 6:
01.d: 2@6'x5' RCBC
..Revised: 1@18'7"x 5'4" Aluminum „
Site 7.
01.d: 1@10'x5' RCBC
RE!vised: 1@ 16'4" x 5'11" Aluminum

This change will not only save the department approximately $300,000 but also-should-
al,leviate some of the subsidence concerns as an aluminum structure weighs 5% of what a RCBC
weighs.
Please let me know if you have any questions, or need more information.
Thanks,
Michael
_-Original Message-----
From: Biddlecome, William 3 SAW [mailto:[e-mail]]
Sent: Wednesday, November 17, 2010 10:01 AM
To: Turchy, Michael A; Wainwright, David; [e-mail]; Brittingham, Cathy;
Lane, Stephen
Cc: Ward, Garcy
Subject: RE: R-2414 Culvert Material Revision
A].1,
Scurry for the slow response but I've been out of the office but after reading everything and
Michael's response below I'm good with this. Just send me the updated drawings for the file.
Tfie way I read this the impacts are not changing. Thanks!
11 Biddlecome
gulatory Project Manager
sfington Regulatory Field Office
01 Box 1000
sLngton, North Carolina 27889
10) 251-4558
[e-mail]
Wilmington District is committed to providing the highest level of support to the public.
help us ensure we continue to do so, please complete the Customer Satisfaction Survey
ated at http://pert.nwp.usace.army.mil/survey:html to complete the survey online.
---Original Message-----
om: Turchy, Michael A [mailto:[e-mail]]
nt: Monday, November 15, 2010 8:43 AM
: Wainwright, David; Biddlecome, William 7 SAW; [e-mail]; Brittingham,
thy; Lane, Stephen
biect: RE: R-2414 Culvert Material Revision
David, Thanks for the 'reply.

To answer your questions... ,
It What culvert width was permitted, and what width are you proposing
(what is the difference in the widths?)
I.will-provide the drawings and changes. in„the_dimensions_to you ,.I anticipate having those
a'. little, later this week
2.. How.are<tyou proposing to prevent rover, widening. of the stream and,any
instability that may be associated with the wider width?
D don't think that will be a problem at these locations. The streams are connected to larger
wetland systems that have been "pinched" by the road and
adjacent railroad. I made a quick map on google maps to display a "bigger
picture view" of these systems. The "street view" feature is also available
here and each stream can be seen in the images. http://goo.gl/maps/fzXG
<http://goo.gl/maps/fzXG>
31. Which site are you proposing to switch from concrete to aluminum?
The structure change to aluminum is proposed at all three culvert sites.
(Sites 3, 6, & 7)
1
Because this isnOt simply just changing materials, but also about
which can lead to other issues, I would like to see some type of drawings before I
feel comfortable allowing this.
//goo.gl/maps/fzXG>
nds good. I'll have those to you later this week.
2
T11anks,
I
Michael
f
Fiom: Wainwright, David
Sent: Monday, November 15, 2010 7:45 AM
T4 : Turchy, Michael A; [e-mail];
[e-mail]; Brittingham, Cathy; Lane, Stephen
Subject: RE: R-2414 Culvert Material Revision
M:ichael,
r
I!would like to have more information before the DWQ"can agree to just give a blanket okay
fdr switching to these culverts. We have had internal discussions recently about using the,
prefabricated aluminum culverts. There have been situations where the DWQ has felt, because
you have less control over the size of the culvert and DOT upsizes, that.the stream has been-;-:
,over-widened. So, I would pose a few questions:
1. What culvert width was permitted, and what width are you proposing
(what is the difference in the widths?)
2,. How are you proposing to prevent over-widening of the stream and any
instability that may be associated with the wider width?
3'.- Which-site-are you-proposing!to switch from concrete to aluminum?
4 Because this isnOt simply just changing materials, but also about
.
width, which can lead to other issues, I would like to see some type of drawings
would feel comfortable allowing this.
David Wainwright
NCDENR, Division of Water Quality
Transportation
Permitting Unit

before :I
3
2321 Crabtree Blvd. Suite 250

Raleigh, NC 27604
[e-mail]
Phone: [phone]
Fax: [phone]
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.
P Please consider the environment before printing this email.
From: Turchy, Michael A [mailto:[e-mail]]
Sent: Wednesday, November 10, 2010 6:58 PM
To: [e-mail]; [e-mail]; Brittingham, Cathy;
Lane, Stephen
Subject: R-2414-Culvert Material Revision _ .-._? .r.
i Bill, .David, Stephen &Cathy-
I've just learned that the Department has identified a cost saving measure for the culverts
on R-2414 B in Camden County.
i
The Department would like to change out the material type for the culvert locations from a
Reinforced Concrete Box Culvert (RCBC) to an Aluminum Culvert.
Due to the potential subsidence at the culvert sites, an aluminum culvert is lighter, and
would not require the timber piles to rest on as the RCBC culverts require. This saves the
department approximately $300,000 and also removes the major concrete work around water.
The length of the culvert remains the same, the structure would still be buried 1' in depth,
and the previously identified moratorium would still apply.
However, the width of the structures would change. Apparently, aluminum culverts come in
pre-determined sizes unlike the RCBCs that can be cast on-site.
4
As the impact summaries will not change, will additional documentation (i.e.
drawings, impact summary tables, etc) be required, or may this email serve as sufficient
notification?
Thanks again for your consideration.
-Michael
Einail correspondence to and from this sender is subject to the N.C. Public Records Law and
may be disclosed to third parties.
Einail correspondence to and from this sender is subject to the N.C. Public Records Law and
May. be,disclosed to-third-parties:

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