NC0003417_Other_20200929

-�� DUKE
ENERGY
File No.: EVC-LEEC-00028
David May, Regional Supervisor
N. C. Division of Water Resources
Washington Regional Office
943 Washington Square Mall
Washington, NC 27889
H.F. Lee Energy Complex
Duke Energy Progress
1199 Black Jack Church Road
Goldsboro, N.C. 27530
September 29, 2024
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Subject: Duke Energy Progress, LLC - H. F. Lee Energy Complex 9�°'aict
National Pollutant Discharge Elimination System Permit NC0003417
Pace Analytical Services Asheville - Lab Mercury Contamination for Instream
David,
Attached is a letter from Pace Analytical Services, LLC explaining mercury contamination of
H. F. Lee Energy Complex instream(Neuse River) samples that occurred in their Asheville, NC
lab sample storage location. The samples were collected 08/10/20 to satisfy requirements of our
NPDES wastewater permit NC0003417, Part I A. (23.) Instream Monitoring. An electronic copy
of Pace's letter has also been uploaded to the NPDES Supplemental Document Upload site,
https://edocs.deq.nc.gov/Forms/NPDES—WW-EDMR-Supplemental-Fonn.
The issue was noted in the August DMR comments sections for both the upstream and
downstream sampling locations.
Please contact Mike Graham at [phone], or Joyce Dishmon at [phone], if there
are any questions or concerns.
Certification Statement:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations. "
tfull sub ttefl,
eff Ines
General Manager, H. F. Lee Energy Complex
Enclosures: Pace Analytical Asheville lab mercury contamination August instream samples

cc:
Pat Herring
Mike Graham
Joyce Dishmon
Plant Environmental File

(�acie Analytical
September 14, 2020
Duke Energy
3932 New Hill Holleman Rd., New Hill, NC 27562
Dear Richard Smith,
Pace Analytical Services, LLC is committed to providing high quality results and exemplary customer service to
our clients. Pace acknowledges the failure on our behalf to deliver accurate low-level mercury results for the
Duke Energy Lee Combined Cycle facility samples listed below. The issue was traced to sample cross -
contamination in the sample storage location.
Lee Combined Cycle
Project ID
Lab Sample ID
Customer Sample ID
Collection Date
Result
Unit
Field
Blanks
LCC_INST
92490924004
LCC_WC_UP_1_INST_2020_056
8/10/2020
10.7
ng/L
X
LCC_INST
92490924001
LCC_WC_DN_1_INST_2020_053
8/10/2020
14.9
ng/L
LCC_INST
92490924002
LCC_WC_UP_1_INST_2020_055
8/10/2020
20.2
ng/L
LCC_INST
92490924003
LCC_WC_DN_1_INST_2020_054
8/10/2020
ND
ng/L
X
Sample collection, bottle kits, sample digestion, and sample analysis were all ruled out as the source of
contamination. A different Pace customer started a new low-level mercury project that started June 23, 2020.
There were non -Duke Energy samples stored with the Duke Energy samples that had mercury concentrations
as high as 18,000 ng/L.
Pace Analytical put in several corrective actions to help reduce the chance of sample cross contamination.
• Pace segregated non -Duke Energy samples from Duke Energy samples.
• We implemented a low-level mercury storage blank system to test for storage sample cross -
contamination issues.
i01 828-417-6052
[e-mail]
9800 Kincey Avenue, Suite 100, Huntersville, NC 28078
PACELABS.COM

aceAnalytical
• Bottle kits will now include a "trip blank" to travel with the samples from the collection point to the lab
and then will go through sample receiving to the storage location.
We apologize for any inconvenience or interruptions caused by this and appreciate the opportunity to support
your analytical needs.
Please do not hesitate to contact me or Kevin Herring if you have any questions or require additional
information.
Sincerely,
Barry Johnson
Sr. Quality Assurance Manager
[01 828-417-6052
[e-mail]
9800 Kincey Avenue, Suite 100, Huntersville, NC 28078
PACELABS.COM

Please note: fields marked with a red asterisk *below are required. You will not be able to submit the form until all
mandatory questions are answered.
Submitter Information
Name:* Jeffery D. Hines
Vft is sutxritting the information?
Email Address:* [e-mail]
Submittal Information
_. ............
The Division of Water Resources (DWR) is providing this site to allow for the upload of required supplemental
information associated with discharge monitoring reports (DMR). All DMR data is required to be submitted
electronically through the eDMR system and should not be submitted here. Division staff will review all
uploaded documents and will only maintain required information. Documents such as laboratory reports are not required
to be submitted and will not be maintained in the system.
Project Information:
Aease supply the permit nunber for this project
Existing ID#:* Pernit Minter
NC0003417
Ecarrples: NDaxxxxx or NOOaxxxx
Facility Name:* Lee Steam Electric Plant
County:* Wayne
Please upload all files that need to be
submited. *
Click the upload button or drag and drop files here to attach docurrant
Duke Energy LLHG Letter 091420 for Lee Combined
46.49KB
Cycle.pdf
Only pdf files are accepted.
Comments about the attachments:
* 67 By checking the box and signing box below, I certify that:
o I have given true, accurate, and complete information on this form;
o I agree that submission of this Supplemental Information form is a "transaction" subject to Chapter 66, Article 40 of the
NC General Statutes (the "Uniform Electronic Transactions Act")
o I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes
(the "Uniform Electronic Transactions Act");
• I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written
signature; AND
o I intend to electronically sign and submit the Supplemental Information form."