RE_ C204553 (R-3300B) Pit D Turbid Discharge

From:Sprinkle, Hannah H
To:Lane, Stephen; Farrell, Sean C; Steffens, Thomas A CIV USARMY CESAW (USA)
Cc:Gingrich, Sophia E; Westphal, Anneliese
Subject:RE: C204553 (R-3300B) Pit D Turbid Discharge
Date:Friday, February 24, 2023 10:47:00 AM
Attachments:image001.png
Sean,

Thanks for passing this report along, I’ll add this information to the project folder and plan to see
the site in person next week.

Hannah
From: Lane, Stephen <[e-mail]>
Sent: Thursday, February 23, 2023 9:07 AM
To: Farrell, Sean C <[e-mail]>; Steffens, Thomas A CIV USARMY CESAW (USA)
<[e-mail]>; Sprinkle, Hannah H <[e-mail]>
Cc: Gingrich, Sophia E <[e-mail]>; Westphal, Anneliese <[e-mail]>
Subject: RE: C204553 (R-3300B) Pit D Turbid Discharge

Hi Sean, Thanks for passing this along. Please keep us updated with your findings after thesite visit and let us know of any measures they can/will implement to try to avoid thisin the future.
Thanks,
Stephen

From: Farrell, Sean C <[e-mail]>
Sent: Wednesday, February 22, 2023 4:16 PM
To: Steffens, Thomas A CIV USARMY CESAW (USA) <[e-mail]>; Sprinkle,
Hannah H <[e-mail]>; Lane, Stephen <[e-mail]>
Cc: Gingrich, Sophia E <[e-mail]>; Westphal, Anneliese <[e-mail]>
Subject: FW: C204553 (R-3300B) Pit D Turbid Discharge

Tom, Hannah, and Stephen,

See below report from Ben Meyer. Conit had a turbid release into an RPW from the outlet of their
sediment basin out by the D-pits. One of us will get out there to look at this issue and report back
with more details.

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 (RK & K Civil Engineering), Benjamin C <[e-mail]>
Sent: Wednesday, February 22, 2023 4:10 PM
To: Farrell, Sean C <[e-mail]>
Cc: Gingrich, Sophia E <[e-mail]>; Westphal, Anneliese <[e-mail]>; Jim L.
Haga <[e-mail]>; Jackson Provost, PE, PLS <[e-mail]>; Brandon
Helms <[e-mail]>; Waugh, Daniel G <[e-mail]>
Subject: C204553 (R-3300B) Pit D Turbid Discharge

Sean,
As we discussed this morning, there was a turbid discharge from the riser pipe from the Pit-D
sediment basin that went into the relatively-permanent-water. This occurred due to the dewatering
of the adjacent pit. We are dealing with similar material as were found in G-Pit, which remain in
suspension for a really long time due to fineness of the sediment particles. Currently, the riser has
been plugged and additional water is not entering the RWP. Conti is looking into alternative methods
to attempt to settle out the particles. Please let us know if you have any additional questions.
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.