RE_ R-3300B Hampstead Bypass Sediment Losses

From:Farrell, Sean C
To:Sprinkle, Hannah H; Steffens, Thomas A CIV USARMY CESAW (USA)
Cc:Bullard, Jason M; Yarborough, Jerry W; Westphal, Anneliese; Gingrich, Sophia E
Subject:RE: R-3300B Hampstead Bypass Sediment Losses
Date:Wednesday, December 28, 2022 3:56:14 PM
Attachments:IMG_9533.JPG
IMG_9545.JPG
image001.png
IMG_9517.JPG
Tom and Hannah,

IMG_9533 is of the outlet of the 78” pipe where the side ditch was overwhelmed. This permanent
ditch leads to the temporary diversion channel that ties back into the JS. The contractor has the
temporary diversion channel pumped down so it is not currently flowing into the JS (IMG_9545).
They are going to be removing the accumulated sediment and any contaminated rock.

At culvert 10, the contractor is going to pump down the skimmer basin and pull the skimmer outlet
to stop the flow path that is causing the upstream bank erosion and undermining the riprap. The
contractor is then going to re-do the bank stabilization and possibly extend the bank stabilization
within the already permitted permanent impact areas of the stream.

I think the contractor is on the right track for getting these issues resolved. We will visit these sites
next week but please let me know if can provide any additional information.

Thanks,

Sean Farrell
GIS Analyst
Division 3
NCDOT- Division of Highways

910-341-2033 office
910-599-1184 mobile
[e-mail]

5501 Barbados Blvd
Castle Hayne, NC 28429

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

From: Sprinkle, Hannah H <[e-mail]>
Sent: Wednesday, December 28, 2022 8:29 AM
To: Farrell, Sean C <[e-mail]>; Steffens, Thomas A CIV USARMY CESAW (USA)
<[e-mail]>
Cc: Bullard, Jason M <[e-mail]>; Yarborough, Jerry W <[e-mail]>;
Westphal, Anneliese <[e-mail]>; Gingrich, Sophia E <[e-mail]>
Subject: RE: R-3300B Hampstead Bypass Sediment Losses

Sean,

Thanks for the report, I’ll add this information to the project folder. We can review these sites next
week on our ride through.

Have a Happy New Year,

Hannah

From: Farrell, Sean C <[e-mail]>
Sent: Wednesday, December 28, 2022 7:52 AM
To: Sprinkle, Hannah H <[e-mail]>; Steffens, Thomas A CIV USARMY CESAW
(USA) <[e-mail]>
Cc: Bullard, Jason M <[e-mail]>; Yarborough, Jerry W <[e-mail]>;
Westphal, Anneliese <[e-mail]>; Gingrich, Sophia E <[e-mail]>
Subject: FW: R-3300B Hampstead Bypass Sediment Losses

Hannah and Tom,

We had some losses out at R-3300B. Below is a report from Ben. I am headed out there today to get
more information and see how they are doing with clean up efforts. I will follow up with additional
information.

Thanks,

Sean Farrell
GIS Analyst
Division 3
NCDOT- Division of Highways

910-341-2033 office
910-599-1184 mobile
[e-mail]

5501 Barbados Blvd
Castle Hayne, NC 28429

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

From: Meyer, Benjamin C <[e-mail]>
Sent: Tuesday, December 27, 2022 2:35 PM
To: Farrell, Sean C <[e-mail]>
Cc: Westphal, Anneliese <[e-mail]>; Gingrich, Sophia E <[e-mail]>; Jim L.
Haga <[e-mail]>; Brandon Helms <[e-mail]>; Dustin Allen
<[e-mail]>; Waugh, Daniel G <[e-mail]>; Jackson Provost, PE, PLS
<[e-mail]>
Subject: R-3300B Hampstead Bypass Sediment Losses

Sean,
We have been out assessing the project after the Christmas break. The project had over 1.5in of rain
over the course of the 24hr rain event that started 12/21 thru 12/22. It caused a couple of locations
to have blowouts with sediment loss over a 5-gallon bucket. The locations are as follows:
Y30RPA STA ~16+00 LT (NC210 Interchange) _ At culvert 10 inlet area there is a washout
where the basin drains into the project. The volume of rain has cause there to be washing of
the bank even with rip rap to try and help stabilize the area.
L1Northern STA 851+00 LT _ 78in pipe inlet headwall blowout.
L1Northern STA 851+00 RT _ 78in pipe outlet side ditch

We are working on cleaning up these areas. Please let us know if you would like to come out and
visit these areas.
Cheers,
Ben

Ben Meyer, PE, CCM
Assistant Resident Engineer
Hampstead Bypass
Cell: 910-617-1902
[e-mail]
[e-mail]

Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.