WQ0016165_Staff Report_20220222

DWR
Division of Water Resources
State of North Carolina
Department of Environmental Quality
Division of Water Resources
WATER QUALITY REGIONAL OPERATIONS SECTION
NON -DISCHARGE APPLICATION REVIEW REQUEST FORM
January 21, 2022
To: WSRO-WQROS: Lon Snider / Jenny Graznak
From: Chloe Lloyd, Water Quality Permitting Section - Non -Discharge Branch
Permit Number: WQ0016165 Permit Type: Wastewater Irrigation
Applicant: City of Lexington Project Type: Renewal
Owner Type: Municipal Owner in BIMS? Yes
Facility Name: City of Lexington WWIS Facility in BIMS? Yes
Signature Authority: Steve Craver Title: WWTP Superintendent
Address: 28 W. Center St., Lexington, NC 27292 County: Davidson
Fee Category: Non -Discharge Minor Fee Amount: $0 - Renewal
Comments/Other Information: [e-mail]
Attached, you will find all information submitted in support of the above -referenced application for your review, comment,
and/or action. Within 45 calendar days, please take the following actions:
® Return this form completed. El Return a completed staff report.
n Attach an Attachment B for Certification.
Issue an Attachment B Certification.
When you receive this request form, please write your name and dates in the spaces below, make a copy of this sheet, and
return it to the appropriate Central Office Water Quality Permitting Section contact person listed above.
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RO-WQROS Reviewer: �'
Date:
2/17/2022
FORM: WQROSNDARR 09-15 Page 1 of 1

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State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Staff Report
February 17, 2022
To: DWR Central Office — WQ, Non -Discharge Unit
Attn: Chloe Lloyd
Application No.: WQ0016165
Facility name: City of Lexington WWI
From: Caitlin Caudle
Winston-Salem Regional Office
Note: This form has been adapted from the non -discharge facility staff report to document the review of both non -discharge and NPDES permit applications and/or renewals. Please complete all sections as they are applicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted? ® Yes or ❑ No
a. Date of site visit: 2/17/2022
b. Site visit conducted by: C. Caudle
c. Inspection report attached? ® Yes or ❑ No
d. Person contacted: Steve Craver and their contact information: [e-mail]
II. EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility? ® Yes ❑ No ❑ N/A
ORC: Jeff Walser Certificate #: 1000476 Backup ORC: Steve Craver Certificate #:11241
2. Are the design, maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? ® Yes or ❑ No
3. Are the site conditions (e.g., soils, topography, depth to water table, etc) maintained appropriately and adequately
assimilating the waste? ® Yes or ❑ No
4. Has the site changed in any way that may affect the permit (e.g., drainage added, new wells inside the compliance
boundary, new development, etc.)? n Yes or ® No
5. Is the residuals management plan adequate? ® Yes or n No
6. Are the existing application rates (e.g., hydraulic, nutrient) still acceptable? ® Yes or No
7. Is the existing groundwater monitoring program adequate? n Yes ❑ No ® N/A
8. Are there any setback conflicts for existing treatment, storage and disposal sites? n Yes or ® No
9. Is the description of the facilities as written in the existing permit correct? ® Yes or ❑ No
10. Were monitoring wells properly constructed and located? ❑ Yes ❑ No ® N/A
11. Are the monitoring well coordinates correct in BIMS? n Yes n No ® N/A
12. Has a review of all self -monitoring data been conducted (e.g., DMR, NDMR, NDAR, GW)? ® Yes or ❑ No
Please summarize any findings resulting from this review: There was a violation for missing TP in 2020 and the
annual fee was overdue in 2019.
13. Are there any permit changes needed in order to address ongoing BIMS violations? ❑ Yes or ® No
14. Check all that apply:
® No compliance issues ❑ Current enforcement action(s) ❑ Currently under JOC
n Notice(s) of violation n Currently under SOC n Currently under moratorium
Have all compliance dates/conditions in the existing permit been satisfied? ® Yes ❑ No ❑ N/A
FORM: WQROSSR 04-14 Page 1 of 2

Are there any issues related to compliance/enforcement that should be resolved before issuing this permit?
nYes ❑No®N/A
III. REGIONAL OFFICE RECOMMENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or ® No
2. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office
® Hold, pending review of draft permit by regional office
❑ Issue upon receipt of needed additional information
❑ Issue
❑ Deny (P1e�asktg„rmmons: )
3. Signature of report preparer:
Signature of regional supervisor:
Date: 2/22/2022
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IV. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
See attached inspection report.
DocuSlgned by.
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FORM: WQROSSR 04-14 Page 2 of 2

Compliance Inspection Report
Permit: WQ0016165 Effective: 07/02/18 Expiration: 07/31/22 Owner : City of Lexington
SOC: Effective: Expiration: Facility: City of Lexington WWIS
County: Davidson 500 Glendale Rd
Region: Winston-Salem
Contact Person: Tom Johnson
Lexington NC 27292
Title: Phone: [phone]
Directions to Facility:
from 1-85 N go 3.1 mi, take exit #91 go 0.2 mi, turn left on Cotton Grove Rd. go 0.4 mi, turn left on Glendale Rd. go 0.8 mi, arrive at
the site on the left.
System Classifications: SI,
Primary ORC: Certification: Phone:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
NC0055786 City of Lexington - Lexington Regional WWTP
Inspection Date: 02/17/2022
Entry Time 10:04AM Exit Time: 11:40AM
Primary Inspector: Caitlin Caudle Phone: [phone]
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Wastewater Irrigation
Facility Status: Compliant ❑ Not Compliant
Question Areas:
Miscellaneous Questions Record Keeping End Use -Irrigation
(See attachment summary)
Page 1 of 4

Permit: WQ0016165 Owner - Facility: City of Lexington
Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Inspection Summary:
On February 17, 2022, DWR staff person Caitlin Caudle conducted a scheduled compliance inspection and permitting visit
Steve Craver and Jeff Walser were present during the entire inspection. A review of records, irrigation fields, and pumping
equipment was completed. This review reflected compliance with the subject permit.
The treatment plant was not inspected.
The following observations were made:
• Irrigation equipment has not been calibrated this permit cycle. A new meter was installed in 2013 and it appeared a
calibration check was completed on June 14, 2017. A new permit was issued on July 2, 2018, after a permit modification
request. Mr. Craver stated that a new effluent flow meter will be purchased.
• Influent is measured at the head of the treatment plant, and effluent is measured using a flow meter on the irrigation
pump.
• There is no effluent storage at this facility. The treatment plant also has a discharge permit and a compost facility.
Irrigation is not the primary disposal manner. Irrigation is only completed after the "reuse pump" has been turned off.
• Irrigation is completed when weather allows and when the 12 month floating total allows it. The system is winterized
from approximately November to April. Irrigation was initiated in April of last year and stopped at the end of October.
• Irrigation is 100% manual. A separate pump must be turned off and the irrigation pump turned on. There is not a wet
well. The irrigation pump is located after the chlorine contact chamber.
• Some of the irrigation field perimeter has public access restricted, but Mr. Craver stated they will be adding additional
signage.
• Some I&I is present in the collection system.
• 9,000 GPD was determined based on the 30 in/yr irrigation limit.
• The Operation and Maintenance Plan and Spill Plan are tied into the NPDES permit. Ms. Caudle requested that some
language be added to the Spill Plan concerning emergencies in the irrigation field. Mr. Craver stated that something will be
posted in the building with the irrigation control panel.
• All residuals from the treatment plant are composted.
• The influent flow meter is calibrated quarterly.
• There are no high water alarms related to the irrigation pump as there is not a wet well or any storage.
• Domestic wastewater accounts for 42% of the permitted flow and industrial wastewater accounts for 3% of the permitted
flow.
• The chlorine contact chamber will be reviewed during the next inspection.
Page 2 of 4

Permit: WQ0016165 Owner - Facility: City of Lexington
Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Type
Reuse (Quality)
Infiltration System
Lagoon Spray, LR
Single Family Spray, LR
Activated Sludge Spray, LR
Activated Sludge Spray, HR
Activated Sludge Drip, LR
Recycle/Reuse
Single Family Drip
Record Keeping
Is a copy of current permit available?
Are monitoring reports present: NDMR?
NDAR?
Are flow rates less than of permitted flow?
Are flow rates less than of permitted flow?
Are application rates adhered to?
Is GW monitoring being conducted, if required (GW-59s submitted)?
Are all samples analyzed for all required parameters?
Are there any 2L GW quality violations?
Is GW-59A certification form completed for facility?
Is effluent sampled for same parameters as GW?
Do effluent concentrations exceed GW standards?
Are annual soil reports available?
# Are PAN records required?
# Did last soil report indicate a need for lime?
If so, has it been applied?
Are operational logs present?
Are lab sheets available for review?
Do lab sheets support data reported on NDMR?
Do lab sheets support data reported on GW-59s?
Are Operational and Maintenance records present?
Were Operational and Maintenance records complete?
Has permittee been free of public complaints in last 12 months?
Is a copy of the SOC readily available?
Yes No NA NE
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Yes No NA NE
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Page 3 of 4

Permit: WQ0016165 Owner - Facility: City of Lexington
Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation
Reason for Visit: Routine
No treatment units bypassed since last inspection?
Comment: No lime was needed.
End Use -Irrigation
Are buffers adequate?
Is the cover crop type specified in permit?
Is the crop cover acceptable?
Is the site condition adequate?
Is the site free of runoff / ponding?
Is the acreage specified in the permit being utilized?
Is the application equipment present?
Is the application equipment operational?
Is the disposal field free of limiting slopes?
Is access restricted and/or signs posted during active site use?
Are any supply wells within the CB?
Are any supply wells within 250' of the CB?
How close is the closest water supply well?
Is municipal water available in the area?
# Info only: Does the permit call for monitoring wells?
Are GW monitoring wells located properly w/ respect to RB and CB?
Are GW monitoring wells properly constructed, including screened interval?
Are monitoring wells damaged?
Comment: Monitoring wells are not requried by the permit.
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Yes No NA NE
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Page 4 of 4