NC0063096_Notification of July eDMR BOD Qualifiers_20200813

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Thomas, Zachary T
From:Thomas, Zachary T
Sent:Friday, August 14, 2020 10:56 AM
To:[e-mail]
Cc:Deck, Erin M
Subject:RE: [External] NPDES NC 0063096
Hello Debra,

Thank you for the information you provided regarding the July BOD samples for Utley Creek Water Rec.

As discussed via our phone call this morning, please ensure that you indicate the situation in the comments section of
your July eDMR and I will place this email in our records.

Please let me know if you have any other questions!

Thank you,

Zach Thomas
Environmental Specialist I
NCDEQ – Division of Water Resources
Raleigh Regional Office
**New Office Number: 919-791-4255**

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

From: Deck, Erin M
Sent: Thursday, August 13, 2020 4:26 PM
To: Thomas, Zachary T <[e-mail]>
Subject: FW: [External] NPDES NC 0063096
Importance: High

Please see below. Thank you for your help (if you explain what needs done, I could be of more use in the future  )

Erin Deck
Department of Environmental Quality
Division of Water Resources
Raleigh Regional Office
Office: 919-791-4258

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

From: Debra Batten [mailto:[e-mail]]
Sent: Thursday, August 13, 2020 11:20 AM
To: Deck, Erin M <[e-mail]>
Cc: Terry Foster <[e-mail]>
Subject: [External] NPDES NC 0063096
Importance: High

CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]

Ms. Deck,

I am contacting you in advance of an issue with our BOD analysis run on the last three days for the month of
July.

We have been experiencing issues with the Blank values and had used a different source for the dilution
water. The issue was the analysis was performed by an inexperience technician and the chlorine had not been
removed resulting in the kill of the seed source as well as resulting in lower than normal influent results. I with
my 40 year experience should have verified this had been done and failed to do so.
 As the monitoring period has ended and collection of samples in the monitoring period was not possible,
I have reported the values obtained.
 I have Qualified the data according to Lab Certification rules and will do so as I do each month with the
DMR.
 We have since returned to the original source of dilution water and will work on the blank correction
issue with BOD runs that do not include compliance samples.
 My professional opinion of 40 years is that the Effluent Values of < 2.0 are accurate values as the
dilution used to calculate were the 98% sample dilutions. 295 mL sample, 4 mL seed , and 1 mL
buffering solution required for the because dilution water was “Not” used.
The Effluent Values for all three days 29th, 30th, and 31 are <2.0 mg/L. The influent values are estimated values
as no dilutions met the take to leave one rule. These are based on the dilutions that depleted the most DO. The
29th has an estimated value of 168 mg/L, 52 mg/L on the 30th and 12 mg/L on the 31st. All of these values are
low and I am sure it was caused by the dilution water used.

If there is any more action needed in regards to this issue that I have not addressed please let me know. If there
are any compliance issues, NOV’s to be expected, any additional written notification required please let myself
or Terry Foster (copied) know and we will comply. Thank you in advance for your assistance.
.

Respectfully,

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Debra C. Batten
Environmental Compliance Laboratory Manager/Pretreatment Coordinator
Utley Creek Water Reclamation/Town of Holly Springs
PO Box 8|Holly Springs, NC 27540
Office: [phone] | Cell: [phone] | Email: [e-mail]
Town Website: www.hollyspringsnc.us

Warning: This email is subject to disclosure under the North Carolina Public Records Law (NCGS
132-1).