NC0090000_More Information (Requested)_20211102 (2)

12/1/21, 12:56 PM Mail - Denard, Derek - Outlook
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Re: [External] RE: Additional Information Request - NPDES Application NC0090000 -
Colonial Pipeline Colonial Pipeline Company – 2020-L1-SR2448
Denard, Derek <[e-mail]>
Tue 11/9/2021 1:52 PM
To: Verdon, Michael A. <[e-mail]>
Cc: Brian Colonnese <[e-mail]>; Andrew Street <[e-mail]>
Mike,
Sampling under the CWA/NPDES should be accordance with methods approved under 40 CFR 136.
Below is the list of approved methods for Total Hardness as CaCO3. Instream sampling should be grab.
We need five (5) days of Hardness samples. They don't have to be consecuve days.

Derek Denard
Environmental Specialist
N.C. Division of Water Resources
N.C. Department of Environmental Quality

919 707 3618 office
919 707 9000 main DWR
[e-mail]

1617 Mail Service Center
Raleigh, NC 27699-1617

Email correspondence to and from this address is subject to the
12/1/21, 12:56 PM Mail - Denard, Derek - Outlook
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North Carolina Public Records Law and may be disclosed to third parties.

From: Verdon, Michael A. <[e-mail]>
Sent: Tuesday, November 9, 2021 12:44 PM
To: Denard, Derek <[e-mail]>
Cc: Brian Colonnese <[e-mail]>; Andrew Street <[e-mail]>
Subject: [External] RE: Addional Informaon Request - NPDES Applicaon NC0090000 - Colonial Pipeline Colonial
Pipeline Company – 2020-L1-SR2448

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Derek, we’re working thru the list of items in the info request and wanted to get a clarificaon on the upstream
hardness samples item (Item #2). Can you provide a bit more of a detailed explanaon of the scope for this item?
For example, what are the acceptable methods for collecng and analyzing these samples? (i.e. is sampling
expected to be connuous and/or composite sampling over 5 days and if so, what are the acceptable collecon
methods? Or can the requested sampling consist of 5 grab samples collected on any 5 separate days that are not
necessarily consecuve?)

I’m copying the Apex folks on this in order to streamline the scheduling of this sampling event. We want to
schedule this sampling ASAP but also want to make sure we’re providing data that will sasfy the request.

Thanks,
Mike

Michael A. Verdon, CHMM
Environmental Program Manager
Colonial Pipeline Company
o. 678.762.2873 | m. 678.234.5206 | www.colpipe.com

From: Denard, Derek <[e-mail]>
Sent: Tuesday, November 2, 2021 11:26 AM
To: Verdon, Michael A. <[e-mail]>; Wya, John M. <[e-mail]>; Titus, Jeff
<[e-mail]>
Cc: Basinger, Corey <[e-mail]>; Pitner, Andrew <[e-mail]>; Bell, Wes
<[e-mail]>; Watson, Edward M <[e-mail]>
Subject: [External Message] Addional Informaon Request - NPDES Applicaon NC0090000 - Colonial Pipeline
Colonial Pipeline Company – 2020-L1-SR2448

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DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe.
Dear Mr. Titus:

12/1/21, 12:56 PM Mail - Denard, Derek - Outlook
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Please find the aached addion request for NPDES Applicaon NC0090000.

In order to provide more convenience, control, and security to our permiees and assist them in
processing their transacons, the Division of Water Resources is currently transioning towards
electronic correspondence. This will hopefully provide more efficient service to our permiees and
other partners and will allow us to more effecvely process and track documents. We are wring to ask
you for your approval of the transmial of documents related to your perming and related acvies
with the Division in an electronic format. Documents will be emailed to the appropriate contact
person(s) in your organizaon in a PDF format.

Please respond to me through email with verificaon that transmial of your documents in an
electronic manner is acceptable to you.
Please respond to this email confirming that you received the aached document(s), were able to
open and view the document(s) and have saved/printed a copy for your records.

If you have any quesons, please feel free to contact me.

Sincerely,

Derek Denard
Environmental Specialist
N.C. Division of Water Resources
N.C. Department of Environmental Quality

919 707 3618 office
919 707 9000 main DWR
[e-mail]

1617 Mail Service Center
Raleigh, NC 27699-1617

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

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