HomeMy WebLinkAbout20201297 Ver 1_RE_ _External_ West Duncan Street Culvert - Lillington NC_20201014
Carpenter,Kristi
From:Sean Clark <SClark@SAGEECOLOGICAL.COM>
Sent:Tuesday, November 17, 2020 7:50 AM
To:Greer, Emily C CIV USARMY CESAW (USA)
Cc:Steenhuis, Joanne
Subject:RE: \[External\] West Duncan Street Culvert - Lillington NC
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Emily,
Submit the PCN for the no-permit-required or a request for a written authorization. Sorry but just want to make sure we
check the correct boxes on the EPCN which can be a little temperamental on out end of things.
Thanks
Sean Clark
Sage Ecological Services, Inc.
Cell: 919.559.1537
SClark@SageEcological.com
From: Greer, Emily C CIV USARMY CESAW (USA) <Emily.C.Greer@usace.army.mil>
Sent: Monday, November 16, 2020 12:45 PM
To: Sean Clark <SClark@SAGEECOLOGICAL.COM>
Cc: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
Sean-
Please go ahead and submit the PCN.
Emily Greer, Regulatory Specialist
Wilmington District - Wilmington Regulatory Field Office
69 Darlington Avenue, Wilmington, NC 28403
910.251.4567 (o)
From: Sean Clark <SClark@SAGEECOLOGICAL.COM>
Sent: Sunday, November 15, 2020 9:49 AM
To: Greer, Emily C CIV USARMY CESAW (USA) <Emily.C.Greer@usace.army.mil>
Cc: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Subject: \[Non-DoD Source\] RE: \[External\] West Duncan Street Culvert - Lillington NC
Emily
1
Please let me know if this will require a written approval. I’m assuming since it is a failure of an existing structure and
since they are staying within the same location of the existing crossing that the proposed activities would fall under a
non-reporting NWP3 (maintenance). Please let me know. They’re trying to get this repaired before winter sets in.
Thanks
Sean Clark
Sage Ecological Services, Inc.
Cell: 919.559.1537
SClark@SageEcological.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Monday, November 2, 2020 4:59 PM
To: Sean Clark <SClark@SAGEECOLOGICAL.COM>; David Arnold <darnold@thenauco.com>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
Sean,
If the USACE does determine that the project is non-reporting, The DWR would like for you to apply for a no permit
required (NPR) application. You can do this with the additional information portion of the e-pcn application. There will
be no application fee with this.
Please keep me in the loop as to what the Corps decides.
Thanks!
From: Sean Clark <SClark@SAGEECOLOGICAL.COM>
Sent: Monday, November 2, 2020 4:47 PM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>; David Arnold <darnold@thenauco.com>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
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Emily,
I’ve attached a couple of photos of the area upstream of the project area. I will send a couple of the downstream area as
well in a separate email. If you would please review the site plan with the associated photos and let us know if a request
for written approval is needed or if the replacement can proceed as non-reporting.
Thanks
Sean Clark
Sage Ecological Services, Inc.
Cell: 919.559.1537
SClark@SageEcological.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Friday, October 30, 2020 1:20 PM
To: David Arnold <darnold@thenauco.com>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>; Sean Clark <SClark@SAGEECOLOGICAL.COM>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
2
Looks good!
From: David Arnold <darnold@thenauco.com>
Sent: Friday, October 30, 2020 1:12 PM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>; Sean Clark <SClark@sageecological.com>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
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Joanne,
Can you please let me know if this works? I added the floodplain bench, changed sills to concrete, and added a detail to
show the stream channel w/baffles.
I will work with Sage Environmental regarding the silt bag, coffer dam, etc. I just want to be sure I have all the key final
elements so I can start getting some bids for this replacement.
Thanks,
David Arnold, PE
Mobile (919) 630-2552
Blockedwww.thenauco.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Friday, October 30, 2020 12:22 PM
To: David Arnold <darnold@thenauco.com>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
From: David Arnold <darnold@thenauco.com>
Sent: Friday, October 30, 2020 12:20 PM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
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Did you find a detail for the baffles? Trying to determine how these would stay stable inside the pipe. A weir on each
end of the pipe (4’ wide x 1’ tall) seems like it may be a better long term solution (without seeing a good detail of how
the baffles work).
Thanks,
3
David Arnold, PE
Mobile (919) 630-2552
Blockedwww.thenauco.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Friday, October 30, 2020 11:20 AM
To: David Arnold <darnold@thenauco.com>
Cc: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
David,
Have you sent new drawings with the changes and I missed them? They need to show baffles in the pipe to keep the
stream at the normal width ( which I think is approximately 4 feet), sills in the pipe (not sheet pile) on both ends of the
storm overflow pipe and the flood plain bench at the inlet end of the storm overflow pipe.
The location of the coffer dam on the up stream side and for the calculating the impacts to the stream for the
application, the area from the coffer dam to the pipe will be considered temporary impacts.
Please, detail how the remaining water within the stream will be handled (silt bag, pumping over high ground, etc.) It
will most likely be turbid and cannot be put back into the stream until it is less than 50 NTU or less.
Just a reminder that an application cannot be submitted until your 30 days is up. Have you discussed this with Emily
Greer to see if it fits under a NW 3 reporting or non-reporting? If it does, you can use the shorter version of our
application to submit it to us and the USACE.
From: David Arnold <darnold@thenauco.com>
Sent: Friday, October 30, 2020 9:34 AM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
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report.spam@nc.gov
Joanne,
Have you had a chance to review these plans yet? We are trying to get this out to bid so we can get this road back open.
Thanks,
David Arnold, PE
Mobile (919) 630-2552
Blockedwww.thenauco.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Monday, October 26, 2020 11:41 AM
To: David Arnold <darnold@thenauco.com>
Cc: Sean Clark <SClark@sageecological.com>; KHamlin@sageecological.com; Joseph Jeffries <jjeffries@lillingtonnc.org>;
Alicia Gregory <agregory@lillingtonnc.org>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
4
The pipe sizes are fine. You will want to place baffles in your main pipe, to maintain the existing stream width. In the
overflow pipe, the sills are usually placed on both sides (ends)of the pipe to allow the sediment to remain in the
pipe. Concrete is the preferred type of sill.
I am looking for a baffle detail, which I will send when I get it.
From: David Arnold <darnold@thenauco.com>
Sent: Monday, October 26, 2020 10:43 AM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Cc: Sean Clark <SClark@sageecological.com>; KHamlin@sageecological.com; Joseph Jeffries <jjeffries@lillingtonnc.org>;
Alicia Gregory <agregory@lillingtonnc.org>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
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report.spam@nc.gov
Joanne,
Thanks for the detail and feedback. I can update the sheet pile sill to a concrete one if that helps. We can also pipe rip
rap in front of it to create the ledge.
For the stream width, I unfortunately need the 96” pipe. We are draining approximately 2.5 square miles to this culvert
and a 48” in culvert (to match old stream) just won’t cut it to handle the flows. The existing pipe is a 72” pipe and it is
severely undersized to handle the flows coming to it, thus the road blowout. I’d also point out that the existing stream
downstream of the culvert is much wider than 4’ at the outlet area. That’s the large plunge pool we saw. It eventually
channelizes back to the smaller ~4’ streambed. Based on current topography, even if we put in a smaller pipe the runoff
would spread out in the plunge pool area before reconcentrating downstream. Please let me know if maintaining these
pipe sizes are acceptable.
Thanks,
David Arnold, PE
Mobile (919) 630-2552
Blockedwww.thenauco.com
From: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Sent: Thursday, October 22, 2020 10:26 PM
To: David Arnold <darnold@thenauco.com>
Subject: RE: \[External\] West Duncan Street Culvert - Lillington NC
David,
This is the best drawing I have that covers the concerns I had; the sills for the floodplain pipes and the floodplain bench I
told you about in front of the floodplain pipe. The drawing also shows the flood plain bench being constructed from soil,
but it can also be constructed from rip rap and over time sediment will fill in the gaps in the riprap.
A sheet pile sill may not meet out requirements. I will need to ask around.
I will need to reiterate that you are not allowed to widen the natural stream width. If the pipe is wider than the stream
you may be required to install baffles in the pipe to keep the stream at a similar width.
5
I will see if I can find any better drawings and I will also review the drawings you have sent me.
Thanks!
Joanne
From: David Arnold <darnold@thenauco.com>
Sent: Thursday, October 22, 2020 11:47 AM
To: Steenhuis, Joanne <joanne.steenhuis@ncdenr.gov>
Cc: Sean Clark <SClark@sageecological.com>; KHamlin@sageecological.com; Joseph Jeffries <jjeffries@lillingtonnc.org>;
Alicia Gregory <agregory@lillingtonnc.org>
Subject: \[External\] West Duncan Street Culvert - Lillington NC
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Joanne,
Thank you for meeting us onsite yesterday to look at the failed culvert in Lillington, NC. I’ve updated the plans per our
conversations. I’ve added the limits of existing impact, shown rip rap, added profile, and have proposed a 2’ sheet pile
in front of the second culvert so that normal flow only goes through one pipe.
Can you please let me know any additional feedback you have?
Thanks!
David Arnold, PE
Mobile (919) 630-2552
Blockedwww.thenauco.com
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