FW_ C204553 - JS Turbidity

From:Farrell, Sean C
To:Sprinkle, Hannah H; Steffens, Thomas A CIV USARMY CESAW (USA)
Cc:Westphal, Anneliese; Bullard, Jason M; Yarborough, Jerry W; Gingrich, Sophia E
Subject:FW: C204553 - JS Turbidity
Date:Monday, December 5, 2022 2:55:55 PM
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Hannah and Tom,

Please see the below report from Ben. A turbid released was noted from one of the basins at R-
3300B that drains to the same JS that we have been having turbidity issues at. It sounds like this was
short lived as the contractor pulled the skimmer and is pumping into water trucks to spray out on
the grade. I think the contractor had previously used this basin to pump from the turbid ponded area
adjacent to the JS that we saw last week. With the issues we are having with the basins not
effectively settling out this sediment, the contractor is going to have to continue to use the basins
for storage purposes only and pump back out on the grade. Will keep you updated on this.

Thanks,

Sean Farrell
Division Environmental Officer
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: Monday, December 5, 2022 2:38 PM
To: Farrell, Sean C <[e-mail]>
Cc: Westphal, Anneliese <[e-mail]>; Gingrich, Sophia E <[e-mail]>;
Brandon Helms <[e-mail]>; Jim L. Haga <[e-mail]>; Jackson Provost,
PE, PLS <[e-mail]>
Subject: C204553 - JS Turbidity

Sean,
See email below for discharge that occurred from the skimmer of the basin nearest the US17 culvert
into the JS Stream this morning around 10:00am. I was not aware of the issue when we spoke on the
phone earlier. Conti was pumping into the basin to dewater the ditch they are cutting and the 78”
pipe near this area. The skimmer and basin are installed properly and the skimmer was pulled as
soon as we discovered the issue. It was estimated that this was occurring for less than an hour. We
took another sample of the JS down stream of the skimmer outlet at 12:45pm with a result of 19
NTU’s. For now, the contractor will be using the basins as storage until the water can be pumped
into a water truck and spread onto the grade. We will continue to monitor and provide updates. Let
us know if you need anything else from us.
Cheers,
Ben

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

From: Brandon Helms <[e-mail]>
Sent: Monday, December 5, 2022 12:14 PM
To: Benjamin Meyer <[e-mail]>
Cc: Jim L. Haga <[e-mail]>; Jackson Provost, PE, PLS <[e-mail]>
Subject: C204553 - JS Turbidity

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The Contr was pumping out of Diversion Ditch for the 78” RCP-IV equalizer culvert into Skimmer
Basin #23.2. The Contr did not pull out the skimmer device and turbid water was leaving the basin
and entering the JS. Background conditions are 29.2 NTU. As of 10:00AM the JS turbidity at entry
point was 87.3 NTU. Monitoring will be continued until further notice.

See Attached
Brandon​ Helms
Transportation Technician VTel: 919-732-3883

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