WQ0002708 Inspection letter_20230109

DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
ROY COOPER
Governor
ELIZABETH S. BISER
Secretory
RICHARD E. ROGERS, JR.
Director
Whit Wheeler
City of Raleigh
PO Box 590
Raleigh, NC 27602-0590
NORTH CAROLINA
Environmental Quality
January 9, 2022
SUBJECT: Compliance Inspection Report
City of Raleigh -Wrenn Road
Non -discharge Permit No. WQ0002708
Wake County
Dear Permittee:
On December 16, 2022, Dorothy Robson from the Raleigh Regional Office visited your facility to evaluate
compliance with the Nondischarge Permit WQ0002708.
Division records indicate the facility operates an influent splitter box, a divided 25-acre 80-million-gallon
(MG) clay -lined gravity -thickening lagoon; a liquid sodium hypochlorite disinfection system including three
(3) 1,500-gallon per min (GPM) vertical turbine pumps; 254.80-acre spray irrigation area; and all
associated piping, valves, controls, and appurtenances.
During the inspection, the following was observed:
Schedule (Section I of permit):
1.The facility has no scheduling issues at the time of the inspection.
Performance (Section II):
2.The facility maintains and operates the wastewater facilities as described in the permit.
Operation and Maintenance (O&M) (Section III):
3.An O&M Plan, Spill Control Prevention Plan (SPCP), and safety measures were readily available and
observed.
4.The lagoons were in good condition.
5.Vegetative cover was observed on/along pipe runs and erosion control areas.
6.Public access is restricted at the wastewater treatment and storage facilities.
7.Freeboard has not been less than two (2) feet in the two lagoons.
8.Monitoring gauges were readily visible and in good conditions in the lagoons.
9.Flow meters are maintained and calibrated yearly.
10.Vegetative covering was well maintained on the berms, pipe runs and embankments with no
overgrown shrubs or trees.
11.0n-site monitoring wells were in good condition and well maintained. One well (MW-B-3) was
damaged when a tree fell on it. However, the well was still intact and minor damage was observed to
the concrete pad and metal pipe.
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DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Monitoring and Reporting (Section IV):
12.The wastewater is sampled and monitored for compliance in accordance with the permit.
13.Record tracking documents (NDMR/NDARs/GW-59) were well maintained and readily available for
review.
14.Annual soil analysis was also made available for review. pH values were low and lime was
recommended. DEQ suggests following the soil analysis recommendations for adding lime.
Inspections (Section V):
15.The facility performs maintenance and inspects the facility daily and maintains written and digital logs.
General Conditions (Section VI):
16.The permittee is in compliance with the permit conditions.
This report is a notification of the results of the compliance inspection. No violations were observed at the
time of the inspection. If you have questions or comments about this inspection, then please contact via
email at [e-mail] or 919-791-4241.
Sincerely,
r—DocuSigned by:
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`— B2916 E6AB32144 F..
Vanessa E Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS: Compliance Inspection Form
Cc: Non -Discharge Laserfiche
DEQ-s)
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DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Compliance Inspection Report
Permit: WO0002708
SOC:
County: Wake
Region: Raleigh
Effective: 06/16/21
Effective:
Contact Person: Tracy Earl McLamb
Expiration: 09/30/26
Expiration:
Title:
Owner : City of Raleigh
Facility: Wrenn Road WWTF
Hebron Church Rd
Garner NC 27529
Phone: [phone]
Directions to Facility:
From Raleigh, take 1-40 East. Exit onto NC Hw. 70 West heading toward Garner. At the first stoplight (White Oak Road), take a left.
Proceed 2 miles, and take the right fork onto Hebron Church Road. Continue to facility.
System Classifications: SI,
Primary ORC: Steve Thomas Honeycutt Certification: 988689 Phone: [phone]
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
NC0088285 City of Raleigh - Dempsey E. Benton WTP
Inspection Date: 12/16/2022 Entry Time 10:OOAM
Primary Inspector: Dorothy M Robson
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: Wastewater Irrigation
Facility Status: Compliant ❑ Not Compliant
Question Areas:
▪ Treatment Flow Measurement -Effluent
▪ Treatment Flow Measurement -Water
Use Records
▪ End Use -Irrigation
▪ Wells
(See attachment summary)
Exit Time: 12:OOPM
Phone: [phone]
Inspection Type: Compliance Evaluation
▪ Treatment Flow Measurement -Influent
▪ Record Keeping
▪ Treatment Disinfection
▪ Miscellaneous Questions
▪ Treatment Lagoons
▪ Treatment Flow Measurement
Page 1 of 5

DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Permit: WQ0002708 Owner - Facility: City of Raleigh
Inspection Date: 12/16/2022
Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Inspection Summary:
On December 16, 2022, Dorothy Robson from the Raleigh Regional Office visited your facility to evaluate compliance with
the Nondischarge Permit WQ0002708.
Division records indicate the facility operates an influent splitter box, a divided 25-acre 80-million-gallon (MG) clay -lined
gravity -thickening lagoon; a liquid sodium hypochlorite disinfection system including three (3) 1,500-gallon per min (GPM)
vertical turbine pumps; 254.80-acre spray irrigation area; and all associated piping, valves, controls, and appurtenances.
During the inspection, the following was observed:
Schedule (Section I of permit):
1. The facility has no scheduling issues at the time of the inspection.
Performance (Section II):
2. The facility maintains and operates the wastewater facilities as described in the permit.
Operation and Maintenance (O&M) (Section III):
3. An O&M Plan, Spill Control Prevention Plan (SPCP), and safety measures were readily available and observed.
4. The lagoons were in good condition.
5. Vegetative cover was observed on/along pipe runs and erosion control areas.
6. Public access is restricted at the wastewater treatment and storage facilities.
7. Freeboard has not been less than two (2) feet in the two lagoons.
8. Monitoring gauges were readily visible and in good conditions in the lagoons.
9. Flow meters are maintained and calibrated yearly.
10. Vegetative covering was well maintained on the berms, pipe runs and embankments with no overgrown shrubs or trees.
11. On -site monitoring wells were in good condition and well maintained. One well (MW-B-3) was damaged when a tree fell
on it. However, the well was still intact and minor damage was observed to the concrete pad and metal pipe.
Monitoring and Reporting (Section IV):
12. The wastewater is sampled and monitored for compliance in accordance with the permit.
13. Record tracking documents (NDMR/NDARs/GW-59) were well maintained and readily available for review.
14. Annual soil analysis was also made available for review. pH values were low and lime was recommended.
DEQ suggests following the soil analysis recommendations for adding lime.
Inspections (Section V):
15. The facility performs maintenance and inspects the facility daily and maintains written and digital logs.
General Conditions (Section VI):
16. The permittee is in compliance with the permit conditions.
This report is a notification of the results of the compliance inspection. No violations were observed at the time of the
inspection.
Page 2 of 5

DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Permit: WQ0002708 Owner - Facility: City of Raleigh
Inspection Date: 12/16/2022
Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Type
Reuse (Quality)
Infiltration System
Single Family Spray, LR
Activated Sludge Spray, LR
Activated Sludge Spray, HR
Activated Sludge Drip, LR
Recycle/Reuse
Single Family Drip
Lagoon Spray, LR
Treatment Flow Measurement -Influent
Is flowmeter calibrated annually?
Is flowmeter operating properly?
Does flowmeter monitor continuously?
Does flowmeter record flow?
Does flowmeter appear to monitor accurately?
Comment: None
Treatment Flow Measurement -Water Use Records
Is water use metered?
Are the daily average values properly calculated?
Comment: None
Treatment Flow Measurement -Effluent
Is flowmeter calibrated annually?
Is flowmeter operating properly?
Does flowmeter monitor continuously?
Does flowmeter record flow?
Does flowmeter appear to monitor accurately?
Comment: Flowmeters were well maintained.
Treatment Disinfection
Is the system working?
Do the fecal coliform results indicate proper disinfection?
Is there adequate detention time (>=30 minutes)?
Is the system properly maintained?
If gas, does the cylinder storage appear safe?
Yes No NA NE
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DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Permit: WQ0002708 Owner - Facility: City of Raleigh
Inspection Date: 12/16/2022
Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Is the fan in the chlorine feed room and storage area operable?
Is the chlorinator accessible?
If tablets, are tablets present?
Are the tablets the proper size and type?
Is contact chamber free of sludge, solids, and growth?
If UV, are extra UV bulbs available?
If UV, is the UV intensity adequate?
# Is it a dual feed system?
Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)?
If yes, then is there a Risk Management Plan on site?
If yes, then what is the EPA twelve digit ID Number? (1000- - )
If yes, then when was the RMP last updated?
Comment: Treatment system was well maintained.
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?
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DocuSign Envelope ID: B728173B-9D48-4236-9063-E7929BDFEC53
Permit: WQ0002708 Owner - Facility: City of Raleigh
Inspection Date: 12/16/2022
Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Has permittee been free of public complaints in last 12 months?
Is a copy of the SOC readily available?
No treatment units bypassed since last inspection?
Comment: Record keeping was well maintained.
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?
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Yes No NA NE
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Comment: One well (MW-B-3) was damaged when a tree fell on it. However, the well was still intact
and minor damage was observed to the concrete pad and metal pipe.
Page 5 of 5