NCG020330_Emails with DWR RRO RE Quary Water for Cooling Tower_20200504

Georgoulias, Bethany
From: Reni Keane-Dengel CW <[e-mail]>
Sent: Monday, May 4, 2020 9:25 AM
To: Vinson, Scott
Cc: Monday, Tessa R; Milosh, Ray; Valentine, Thad; Georgoulias, Bethany
Subject: RE: [External] Water Use Permit Question, WQ0020808 & NCG020330
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Hi Scott,
Thank you for getting back to me. The cooling tower water would be discharged to the WWTP and not back into the
quarry or a different water body.
Please let me know if you have any more questions.
Thanks,
Reni Keane-Dengel I Water Resources Scientist
Wenck Associates for 3M Environment, Health, and Safety
3M Center, 224-5W-03 I St. Paul, MN 55144-1000 1 United States
Office: [phone] Mobile: [phone]
rkeaneden.gel.cwa-mmm.com
' L! J /as 3M.corn
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From: Vinson, Scott <[e-mail]>
Sent: Friday, May 1, 2020 5:13 PM
To: Reni Keane-Dengel CW <[e-mail]>
Cc: Monday, Tessa R <[e-mail]>; Milosh, Ray <[e-mail]>; Valentine, Thad
<[e-mail]>; Georgoulias, Bethany <[e-mail]>
Subject: [EXTERNAL] RE: [External] Water Use Permit Question, WQ0020808 & NCG020330
Reni,
Initially I do not think there would be a problem for 3M to pull water from one of their on -site dewatering
ponds/quarry. But because I am not familiar with this site nor its existing permits I wanted to reach out to other staff
before making any final decisions on this request.
I found 2 permits for 3M that may or may not be affected by this action and wanted to get a little more input. The
permits are for the 3M Pittsboro Plant — mine dewatering permit NCG020330 issued by DEMLR & the 3M — Pittsboro
WWTP Reclaim wastewater permit WQ0020808 that appears to treat both domestic waste and contact cooling water
discharge.
Can you verify whether the contact cooling water is being discharge to the WWTP or back into the mine quarry?

I'll try to take a look through our permits, see if there are any conflicts and get back to you next week. Like I mentioned,
I'm not familiar with the 3M site, so if others have questions, comments or concerns, regarding Reni's request, please let
us know.
Take care & be safe,
Scott
Scott Vinson
Regional Supervisor
Raleigh Regional Office
Water Quality Regional Operations Section
NCDEQ — Division of Water Resources
3800 Barrett Drive
Raleigh, NC 27609
[phone] office
[phone] direct line
Email: Scott.Vinsona-ncdenr.gov
E Q `
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Reni Keane-Dengel CW [mailto:[e-mail]]
Sent: Tuesday, April 28, 2020 9:55 AM
To: Vinson, Scott <[e-mail]>
Subject: [External] Water Use Permit Question
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Hello Scott,
My name is Reni and I was asked by the 3M facility in Pittsboro, NC to see if they would need a permit to use water from
their on -site quarry in their cooling tower and pug mill.
The plan is to have a floating pump that would pull water from one of their on -site dewatering ponds for use in the
cooling tower and pug mill.
I took a brief look at the Water Permit list on the NC DEQ website and initially thought the Water Supply Watershed
Protection Program Permit and/or the Water Withdrawal and Transfer Registration may apply.
However, I checked and the site is not within a Water Supply Watershed, so I don't believe that type of permit is
required. If they use more than 100,000 gpd of water from the dewatering pond, in your opinion, would they need a
Water Withdrawal Permit? Are there any other permits that you think may apply?
Please let me know if you have any questions.

Thanks,
Reni Keane-Dengel I Water Resources Scientist
Wenck Associates for 3M Environment, Health, and Safety
3M Center, 224-5W-03 I St. Paul, MN 55144-1000 1 United States
Office: [phone] Mobile: [phone]
rkeanedengel.cwa-mmm.com
' L! J /as 3M.com
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3m.com