WQ0001318_Annual Report_20240612

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ROY COOPER _
Governor d C
ELIZABETH S.BISER
Secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
June 12, 2024
Delivered electronically to: tdjohnson _lexingtonnc.gov
Mr. Tom Johnson - Water Resources Director
City of Lexington
28 West Center Street
Lexington, NC 27292
SUBJECT: 2023 Annual Residuals Report Review
City of Lexington, Distribution of Class A Residuals
Permit No. WQ0001318
Davidson County
Dear Mr. Johnson:
On June 7, 2024, Division of Water Resources staff, Kristen Potwora, completed a
review of the 2023 Annual Report for WQ0001318. This review reflects compliance with
the subject permit.
Please refer to the enclosed inspection report for additional comments and observations.
If you have any questions, please contact me or Kristen Potwora at the letterhead address
and phone number 336-776-9697, or by email at jenny.graznak(a)_deg.nc.gov or
kristen.potwora(a)_deq.nc.gov.
Sincerely,
DocuSigned by:
OD2D3CE3F1 B7456...
Jennifer F. Graznak, Assistant Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ-WSRO
Enc: Inspection Report
Cc: Reed Blackburn (electronic copy)
Will Hodges (electronic copy)
Davidson County Environmental Health (electronic copy)
North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office 1 450 W.Hanes Mill Rd,Suite 300 I Winston-Salem,North Carolina 27105
oeo.W M c�nro�—W W.1" /`� 336.776.9800

Compliance Inspection Report
Permit:WQ0001318 Effective: 08/14/20 Expiration: 06/30/24 Owner: City of Lexington
SOC: Effective: Expiration: Facility: City of Lexington Class A Residuals Compostini,
County: Davidson 500 Glendale Rd
Region: Winston-Salem
Lexington NC 27292
Contact Person:Will Hodges Title: Utility Plant Supervisor Phone: [phone]
Directions to Facility:
System Classifications: LA,
Primary ORC: Certification: Phone:
Secondary ORC(s):
On-Site Representative(s):
Related Permits:
NC0055786 City of Lexington-Lexington Regional WWTP
Inspection Date: 06/07/2024 Entry Time 09:OOAM Exit Time: 11:OOAM
Primary Inspector:Kristen Potwora n Phone: [phone]
Secondary Inspector(s): /12�QQyL i`dtGtt92C�
Reason for Inspection: Routine Inspection Type: Annual Report Review
Permit Inspection Type: Distribution of Residual Solids(503)
Facility Status: Compliant ❑ Not Compliant
Question Areas:
Miscellaneous Questions Record Keeping Treatment
Sampling Pathogen and Vector Attraction
(See attachment summary)
Page 1 of 4

Permit: WQ0001318 Owner-Facility:City of Lexington
Inspection Date: 06/07/2024 Inspection Type:Annual Report Review Reason for Visit: Routine
Inspection Summary:
On June 7, 2024, Division of Water Resources staff, Kristen Potwora, completed a review of the 2023 Annual Report for
WQ0001318. This review reflects compliance with the subject permit.
Observations:
• In February the total amount of dry tons received by participants was 53.36,but on the Class AAnnual Distribution and
Marketing/Surface Disposal Certification and Summary Form it was recorded as 63.36 dry tons. That changes the total dry
tons for the 2023 year to be 2204.48 instead of 2214.48 dry tons.
• Annual Residual Sampling occurred on 2/1/23, 4/5/23, 6/7/23, 8/2/23, 10/4/23 and 12/6/23.
• TCLP was completed for the last permit cycle in 2021. The new permit cycle is effective from 7/1/2024 through
6/30/2032 and will need TCLP analysis conducted.
• Often the fecal coliform samples were over the 1000 MPN/gram parameter limits. Samples were taken again and were
under the parameter limits prior to distribution. Based off 40 CFR 503.32(a)(3)(i), each sample must comply with the
numerical requirements and be completed when the material is ready to be used or disposed of. This was clarified with the
City of Lexington during the 2/5/2024 Compliance Evaluation Inspection.
Page 2 of 4

Permit: WQ0001318 Owner-Facility:City of Lexington
Inspection Date: 06/07/2024 Inspection Type:Annual Report Review Reason for Visit: Routine
Type Yes No NA NE
Land Application ❑
Distribution and Marketing
Record Keeping Yes No NA NE
Is GW monitoring being conducted, if required? ❑ ❑ 0 ❑
Are GW samples from all MWs sampled for all required parameters? ❑ ❑ 0 ❑
Are there any GW quality violations? ❑ ❑ 0 ❑
Is GW-59A certification form completed for facility? ❑ ❑ 0 ❑
Is a copy of current permit on-site? 0 ❑ ❑ ❑
Are current metals and nutrient analysis available? 0 ❑ ❑ ❑
Are nutrient and metal loading calculating most limiting parameters? 0 ❑ ❑ ❑
a. TCLP analysis? ❑ ❑ 0 ❑
b. SSFA(Standard Soil Fertility Analysis)? ❑ ❑ 0 ❑
Are PAN balances being maintained? ❑ ❑ 0 ❑
Are PAN balances within permit limits? ❑ ❑ 0 ❑
Has land application equipment been calibrated? ❑ ❑ 0 ❑
Are there pH records for alkaline stabilization? ❑ ❑ 0 ❑
Are there pH records for the land application site? ❑ ❑ 0 ❑
Are nutrient/crop removal practices in place? ❑ ❑ 0 ❑
Do lab sheets support data reported on Residual Analysis Summary? 0 ❑ ❑ ❑
Are hauling records available? 0 ❑ ❑ ❑
Are hauling records maintained and up-to-date? 0 ❑ ❑ ❑
#Has permittee been free of public complaints in last 12 months? 0 ❑ ❑ ❑
Has application occurred during Seasonal Restriction window? ❑ ❑ 0 ❑
Comment:
Pathogen and Vector Attraction Yes No NA NE
a. Fecal coliform SM 9221 E(Class A or B) 0 ❑ ❑ ❑
Class A, all test must be<1000 MPN/dry gram ❑
Geometric mean of 7 samples per monitoring period for class B<2.0*10E6 CFU/dry gram
Fecal coliform SM 9222 D(Class B only) ❑ ❑ ❑
Geometric mean of 7 samples per monitoring period for class B<2.0*10E6 CFU/dry gram ❑
b. pH records for alkaline stabilization (Class A) ❑ ❑ ❑
c. pH records for alkaline stabilization (Class B) ❑ ❑ ❑
Temperature corrected ❑
d. Salmonella(Class A, all test must be<3MPN/4 gram day) ❑ ❑ 0 ❑
Page 3 of 4

Permit: WQ0001318 Owner-Facility:City of Lexington
Inspection Date: 06/07/2024 Inspection Type:Annual Report Review Reason for Visit: Routine
e. Time/Temp on: 0 ❑ ❑ ❑
Digester(MCRT) ❑
Compost
Class A lime stabilization ❑
f. Volatile Solids Calculations 0 ❑ ❑ ❑
g. Bench-top Aerobic/Anaerobic digestion results ❑ ❑ M ❑
Comment:
Treatment Yes No NA NE
Check all that apply
Aerobic Digestion ❑
Anaerobic Digestion ❑
Alkaline Pasteurization (Class A) ❑
Alkaline Stabilization (Class B) ❑
Compost
Drying Beds ❑
Other ❑
Comment:
Sampling Yes No NA NE
Describe sampling:
Is sampling adequate? 0 ❑ ❑ ❑
Is sampling representative? 0 ❑ ❑ ❑
Comment:
Page 4 of 4