20190695 Ver 1_Curing compound_20211013 (2)

From:Farrell, Sean C
To:Sprinkle, Hannah H
Cc:Shaver, Brad E SAW ([e-mail]); Herndon, T. Mason; Westphal, Anneliese
Subject:RE: Sampson Bridge 213 curing compound
Date:Friday, October 15, 2021 7:20:29 AM
Attachments:IMG_0718.jpg
image001.png
image002.png
Hannah,

Our Assistant Resident sent me this photo yesterday. It sounds like what was on the surface just
broke up and dissolved.

-Sean

From: Sprinkle, Hannah H <[e-mail]>
Sent: Thursday, October 14, 2021 5:21 PM
To: Farrell, Sean C <[e-mail]>; Westphal, Anneliese <[e-mail]>
Cc: Shaver, Brad E SAW ([e-mail]) <[e-mail]>;
Herndon, T. Mason <[e-mail]>
Subject: RE: Sampson Bridge 213 curing compound

Sean,

Thanks for the follow-up and sorry for the late response, I’m in the SWITC class this week and I
haven’t had much opportunity to check emails. Please keep me posted on the cleanup. I will want to
check on this site during
our ride along.

Hannah

From: Farrell, Sean C <[e-mail]>
Sent: Thursday, October 14, 2021 11:22 AM
To: Westphal, Anneliese <[e-mail]>; Sprinkle, Hannah H
<[e-mail]>
Cc: Shaver, Brad E SAW ([e-mail]) <[e-mail]>;
Herndon, T. Mason <[e-mail]>
Subject: RE: Sampson Bridge 213 curing compound

Hannah,

Attached is an MSDS that I was able to pull for the compound. There isn’t anything specific listed for
ecological or regulatory information. Regardless, we are going to use this as an opportunity to make
a point that our contractors need to have spill kits onsite. I am going to consult with Division
Construction regarding the application process of this compound, since apparently it’s use is a
standard specification, to see if there is potentially a more controlled method of application or ways
to contain the overspray.

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: Westphal, Anneliese <[e-mail]>
Sent: Wednesday, October 13, 2021 5:30 PM
To: Sprinkle, Hannah H <[e-mail]>
Cc: Shaver, Brad E SAW ([e-mail]) <[e-mail]>; Farrell,
Sean C <[e-mail]>; Herndon, T. Mason <[e-mail]>
Subject: Sampson Bridge 213 curing compound

Hannah,
During our visit to Sampson Bridge 213 on SR 1710 Emmet Thornton Rd., we noticed a white film on
the water in the vicinity of the interior bent that is being constructed. We learned that it came from
a curing compound that is typically used on concrete and had just been sprayed on the interior bent
cap. Most of the film was located between the turbidity curtain and the existing end bent of the
bridge (see attached photo) but some was located outside of the turbidity curtain. The compound is
described as water-based, white-pigmented concrete curing compound which are wax-based
dispersions with selected white pigments (see attached photos of the container). We are not sure
why this was able to access the water, although there was some wind today.

We asked for the contractor to use absorbent pads to remove it from the surface of the water but
since they did not have any materials on site, we will need to follow-up with the assistant resident
engineer to see what they were able to do. We will need to take steps on any future application to
make sure that they are able to apply such products without it reaching the water.

Please let me know if you have any suggestions or insight.

Thank you,
Anneliese

Anneliese Westphal
Environmental Senior Specialist
Division 3
NCDOT- Division of Highways

910 341 2000 office
910 604 1330 mobile
910 675 0143 fax
[e-mail]

5501 Barbados Blvd
Castle Hayne, NC 28429-5647

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