NGC080814_Tier I Notification Exceedance for TSS_20240426

Peterson, Kathryn S
From: Eplin, Jerry W
Sent: Friday, April 26, 2024 4:23 PM
To: Peterson, Kathryn S
Subject: FW: [External] NGC080814 CATS Bus Maintenance Operations Facility - Tier I
Notification - Exceedance for TSS
Attachments: CATS BMOF 003 - Tier 1 Response 042424 - before 1 jpg; CATS BMOF 003 - Tier 1
Response 042424 - before 2jpg; CATS BMOF 003 - Tier 1 Response 042524 - after
1 jpg; CATS BMOF 003 - Tier 1 Response 042524 - after 2jpg
Foryourresponse
Jerry W. Eplin, PE
Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email: merry.eplina-deg.nc.gov
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
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Dopelnir d of Eny wmo iial 11dallly
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: DeCristofaro, Andrew<[e-mail]>
Sent: Friday, April 26, 2024 1:00 PM
To: Eplin,Jerry W<[e-mail]>
Subject: [External] NGC080814 CATS Bus Maintenance Operations Facility-Tier I Notification - Exceedance for TSS
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
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Jerry,
I hope you have been well.
In accordance with NCG08 General Permit E-5(a)this email shall serve as notification of a Tier I exceedance for TSS at
outfall 003 of the CATS Bus Maintenance Operations Facility(NCG080814).
1

The results of the sampled rain event on 4/9/2024 for TSS were 128mg/L. Results were obtained on 4/22/24, a follow
up site visit was performed on 4/24/24, and corrective actions were completed on 4/25/24.
There is no clean indicator as to what caused the exceedance. The staff who sampled noted a significant amount of
pollen in the sample. During the site visit on 4/24/24, some sediment accumulation was noted captured by the filter
sock which stays in place at the outfall, but the sock appeared secure. Corrective actions decided were to sweep the
accumulated sediment and replace the filter sock.
Please see the attached photographs from before and after.
Let me know if you need any additional information.
Thank you,
Andrew DeCristofaro
Water Quality Program Specialist
Charlotte-Mecklenburg Storm Wafer Services
[phone] 1 [e-mail] I StormWater.CharMeck.org
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.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
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Peterson, Kathryn S
From: Peterson, Kathryn S
Sent: Monday, April 29, 2024 8:37 AM
To: [e-mail]
Cc: Eplin, Jerry W
Subject: Tier 1 Exceedance for TSS NCG080814
Hi Andrew,
DEQ has received your Tier 1 Exceedance for TSS for Outfall 003 at CATS Bus Maintenance Operations
Facility covered under NCG080814. Ensure to follow all steps provided in Table 3:Tier One Response
for a Benchmark Exceedance listed in General Permit No. NCG080000 COC NCG080814. Let us know if
you need any technical assistance.
Best,
Kathryn
Kathryn Peterson
Assistant Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral and Land Resources
Office: [phone]
Mobile: [phone]
Email: [e-mail]
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115
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