NC0000396_correspondence_20201012

Weaver, Charles
From: Green, Jason <[e-mail]>
Sent: Monday, October 12, 2020 11:28 AM
To: Weaver, Charles
Cc: Chernikov, Sergei; Davidson, Landon; Heim, Tim; Williams, Teresa Lynne; Swing, Mike; Wylie, Robert
R; Keezel, Mariea Haney; Matthew Fields
Subject: RE: [External] Asheville
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Charles,
Thanks for checking with central office and everyone else at the ARO.
I will leave future site visit and method verification discussion up to our Asheville plant environmental leads (included
here). This may be a good opportunity for our Duke Water Resources team to become familiar with Division accepted
methodology for this technique if there was ever the need for it to be used elsewhere.
I appreciate your help and quick response on this. Have a great week.
Jason G
Jason Green
Senior Environmental Scientist
Duke Energy Water Resources
From: Weaver, Charles <[e-mail]>
Sent: Monday, October 12, 2020 10:53 AM
To: Green, Jason <[e-mail]>
Cc: Chernikov, Sergei <[e-mail]>; Davidson, Landon <[e-mail]>; Heim, Tim
<[e-mail]>
Subject: FW: [External] Asheville
The Division does not object to your proposed method of flow measurement.
Contact Tim Heim in the ARO if you want to discuss the methodology further, or if you want a Division rep present when
flow is measured.
CHW
From: Heim, Tim <[e-mail]>
Sent: Monday, October 12, 2020 9:56 AM
To: Weaver, Charles <[e-mail]>; Boss, Daniel J <[e-mail]>

Cc: Davidson, Landon <[e-mail]>
Subject: RE: [External] Asheville
As long as the total volume of water to be discharged is being captured and measured accurately, I have no exceptions
to this. If necessary I could perform a field visit to verify their method.
-T
From: Weaver, Charles
Sent: Monday, October 12, 2020 9:53 AM
To: Heim, Tim <[e-mail]>; Boss, Daniel J <[e-mail]>
Cc: Davidson, Landon <[e-mail]>
Subject: FW: [External] Asheville
I need an answer on this question from Duke. Sergei is OK with it. Let me know what you guys think and I'll respond to
Duke.
CHW
From: Chernikov, Sergei <[e-mail]>
Sent: Wednesday, October 7, 2020 11:10 AM
To: Weaver, Charles <[e-mail]>
Subject: RE: [External] Asheville
Charles,
That sounds good for me, but I would also recommend that they check with the Regional Office. Because these types of
decisions are made by RO.
Thank you!
Sergei
Sergei Chernikov, Ph.D.
Environmental Engineer III
Industrial NPDES Permitting Unit
NEW Tel. [phone]
1617 Mail Service Center, Raleigh, NC 27699-1617
Express Mail: 512 N. Salisbury St., Raleigh, NC 27604
From: Weaver, Charles
Sent: Wednesday, October 7, 2020 11:01 AM
To: Chernikov, Sergei <[e-mail]>
Cc: Davidson, Landon <[e-mail]>
Subject: FW: [External] Asheville
Duke Asheville — NC0000396
Does this sound acceptable?
CHW

From: Green, Jason <[e-mail]>
Sent: Wednesday, October 7, 2020 10:31 AM
To: Weaver, Charles <[e-mail]>
Subject: [External] Asheville
External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Hello Charles,
Not sure if you are the most appropriate person to ask regarding a technical question for annual flow validation for
industrial wastewater, but I figured I would start with ARO compliance first.
At our Duke Asheville Combined Cycle facility we have an outfall (101) that discharges too little flow to be measured by
our standardized method using calibrated flow meters. The question I have is, would a timed flow collection using a
quantitative collection method (collecting all water and measuring volume in an appropriate measuring container) be
valid for the NPDES permit reporting?
I am happy to discuss this over the phone if you need more information. I can be reached at 919-218-9261.
If you are not the appropriate contact for this question please forward to the best team member.
Thanks for your help.
Jason Green
Jason Green
Senior Environmental Scientist
Duke Energy
Water Resources
Cell [phone]
Raleigh Office [phone]