WQ0001318_Residual Annual Report 2019 Review_20200518

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Mr. Tom Johnson - Water Resources Director
City of Lexington
28 West Center Street
Lexington, NC 27292
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NORTH CAROLINA
Environmental Quality
May 18, 2020
Subject: Review of 2019 Annual Report
City of Lexington, Distribution of Class A Residuals
Permit No. WQ0001318
Davidson County
Dear Mr. Johnson:
Division of Water Resources (Division) staff person Caitlin Caudle has completed a review of the 2019 Annual
Report. The report reflects compliance with the subject permit. A routine compliance inspection is planned to
be completed within the next 12 months.
The following item of concern was noted:
The annual report was titled "Collection System Annual Report" and included the permit number for the
collection system. In the future, annual reports should be titled to denote the Class A Residuals Management
Program and include the permit number for the Distribution of Class A Residuals permit.
If you have any questions regarding this letter, please contact Patrick Mitchell or me at the letterhead address
or phone number, or by email at patrick.mitchellkncdenr.gov or lon.snidernncdenr.gov.
Sincerely,
Docu SiTgnedl�by:
145B49 2@C 4EA.
Lon T. m er, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ — WSRO
cc: Davidson County Environmental Health
DWR WQ Central Office — Permit File WQ0001318, WSRO Files
North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office 1450 W. Hanes Mill Road, Suite 3001 Winston-Salem, North Carolina 27105
336-776-9800

Compliance Inspection Report
Permit: WQ0001318 Effective: 08/01/19 Expiration: 06/30/24 Owner: City of Lexington
SOC: Effective: Expiration: Facility: City of Lexington DCAR
County: Davidson 500 Glendale Rd
Region: Winston-Salem
Lexington NC 27292
Contact Person: Joseph Charles Shaffer Title: 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: 05/15/2020 Entry Time 12:OOPM Exit Time: 01:OOPM
Primary Inspector: Caitlin Caudle Phone: [phone]
Secondary Inspector(s):
Patrick Mitchell
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: 05/15/2020 Inspection Type: Annual Report Review Reason for Visit: Routine
Inspection Summary:
On 05/15/2020 a review of the annual report was completed. The annual report reflected compliance with the subject permit.
A site visit was not included in this inspection.
The following items of concern were noted:
The annual report was titled as "Collection System Annual Report" and included the permit number for the collection
system. In the future, annual reports should be titled to denote the Class A Residuals Management Program and include the
permit number for the distribution of class a residuals permit.
Page 2 of 4

Permit: WQ0001318 Owner - Facility: City of Lexington
Inspection Date: 05/15/2020 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?
❑
❑ ❑
Are current metals and nutrient analysis available?
❑
❑ ❑
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?
❑
❑ ❑
Are PAN balances within permit limits?
❑
❑ ❑
Has land application equipment been calibrated?
❑
❑ ❑
Are there pH records for alkaline stabilization?
❑
❑ ❑
Are there pH records for the land application site?
❑
❑ ❑
Are nutrient/crop removal practices in place?
❑
❑ ❑
Do lab sheets support data reported on Residual Analysis Summary?
0
❑ ❑ ❑
Are hauling records available?
❑
❑ ❑
Are hauling records maintained and up-to-date?
❑
❑ ❑
# Has permittee been free of public complaints in last 12 months?
0
❑ ❑ ❑
Has application occurred during Seasonal Restriction window?
❑
❑ ❑
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)
❑
❑ ❑ ❑
Page 3 of 4

Permit: WQ0001318 Owner - Facility: City of Lexington
Inspection Date: 05/15/2020 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 ❑ ❑ ❑ ❑
g. Bench -top Aerobic/Anaerobic digestion results ❑ ❑ ❑ ❑
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? ❑ ❑ ❑
Is sampling representative? ❑ ❑ ❑
Comment:
Page 4 of 4