NC0084387_Inspection_20191029

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Ms. Jacqueline A. Jarrell
Operations Chief
Environmental Management Division
Charlotte Water
5100 Brookshire Blvd.
Charlotte, North Carolina 28216
Dear Ms. Jarrell:
NORTH CAROLINA
Environmental Quality
October 29, 2019
Subject: Compliance Evaluation Inspection
Lee S. Dukes WTP
NPDES Permit No. NCO084387
Mecklenburg County
Enclosed is a copy of the Compliance Evaluation Inspection Report for the inspection conducted at the subject facility on
October 22, 2019, by Mr. Wes Bell of this Office. Please inform the facility's Operator -in -Responsible Charge (ORC) of our
findings by forwarding a copy of the enclosed report.
The report should be self-explanatory; however, should you have any questions concerning this report, please do
not hesitate to contact Mr. Bell at [phone] or at wes.bell(cr�,ncdenr.gov.
Sincerely,
DocuSigned by:
A wNN,uft
F161 FB69A2D84A3...
for W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Enclosure:
Inspection Report
cc: Rusty Rozzelle, MCWQP (via email)
North Carolina Department of Environmental Quality I Division of Water Resources
D_ E� Mooresville Regional Office 1610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
NORTH CAROLINA
Da"MoM a enWmn�bl mwnq 704,663.1699

United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN I 2 IF I 3 I NCO084387 111 12 I 19/10/22 I17 18 I S i 19 i G i 201 I
211111 I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I f6
Inspection
Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved -------------------
67
2.0 70 Id I 71 [.. I 72 73 L_LJ74 751 I I I I I I I80
I —I u
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES oermit Number)
09:15AM 19/10/22
15/04/01
Lee S. Dukes WTP
7980 Babe Stillwell Farm
Exit Time/Date
Permit Expiration Date
Huntersville NC 28078
11:20AM 19/10/22
20/02/28
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
David M Ban ick/ORC/704-399-2426/
Gabe Sasser//704-399-2142 /
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Jacqueline A Jarrell,5100 Brookshire Blvd Charlotte NC 282163371//704-336-5433/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
1 re
Wes Bell cusignedd by: DWR/MRO WQ/704-663-1699 Ext.2192/ 10/29/2019 19E�:�961D90=43T
Signature of Mana D6Q SNdRe&igwer Agency/Office/Phone and Fax Numbers Date
Andrew Pitne A*'-� H P44"l%VR/MR0 WQ/704-663-1699 Ext.2180/ 10.29.19
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

NPDES yr/mo/day Inspection Type
NCO084387 I11 121 19/10/22 117 18 JCJ
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

Permit: NCO084387 Owner - Facility: Lee S. Dukes WTP
Inspection Date: 10/22/2019 Inspection Type: Compliance Evaluation
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
0
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application?
Is the facility as described in the permit?
0
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# Are there any special conditions for the permit?
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0
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Is access to the plant site restricted to the general public?
M
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Is the inspector granted access to all areas for inspection?
0
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Comment: The Division received the permit renewal application package on 10/1/19.
The last compliance evaluation inspection by DWR staff was performed on 7/23/16.
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
0
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Is all required information readily available, complete and current?
0
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Are all records maintained for 3 years (lab. reg. required 5 years)?
M
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Are analytical results consistent with data reported on DMRs?
0
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Is the chain -of -custody complete?
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Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
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Has the facility submitted its annual compliance report to users and DWQ?
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(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
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on each shift?
Is the ORC visitation log available and current?
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Is the ORC certified at grade equal to or higher than the facility classification?
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Is the backup operator certified at one grade less or greater than the facility classification?
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Is a copy of the current NPDES permit available on site?
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Facility has copy of previous year's Annual Report on file for review?
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0
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Comment: The records reviewed during the inspection were organized and well maintained.
Discharge
Monitoring Reports (eDMRs) were reviewed for the period September 2018 through
August
2019. No effluent limit violations were reported and all monitoring frequencies were correct.
Laboratory
Yes No NA NE
Page# 3

Permit: NCO084387 Owner - Facility: Lee S. Dukes WTP
Inspection Date: 10/22/2019 Inspection Type: Compliance Evaluation
Laboratory
Yes No NA NE
Are field parameters performed by certified personnel or laboratory?
0
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Are all other parameters(excluding field parameters) performed by a certified lab?
0
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# Is the facility using a contract lab?
0
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# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
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0
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Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
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0
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Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
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0
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Comment: On -site field analvses (DH. temDerature. TRC) are Derformed under Charlotte Water/Lee S
Dukes WTP's laboratory certification #5221. Charlotte Water Environmental Laboratory
Services performs analyses of all permit -required parameters with the exception of field
parameters and chronic toxicity. ETT Environmental has been contracted to perform the
chronic toxicity analyses.
Facility staff must ensure that new pH buffers are used (pH meter calibrations) each day
effluent analyses are performed. The pH meter calibrations are performed approximately six
to eight hours prior to the effluent analyses. This Office recommends re -checking the 7.0
SU buffer prior to future effluent analyses.
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
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M
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Is sample collected below all treatment units?
M
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Is proper volume collected?
0
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Is the tubing clean?
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0
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# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
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0
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Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
0
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representative)?
Comment: The subject permit requires effluent grab samples.
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ 0 ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: The NPDES wastewater treatment facilities appeared to be Droaerly operated and well
maintained.
Equalization Basins Yes No NA NE
Is the basin aerated? 0 ❑ ❑ ❑
Is the basin free of bypass lines or structures to the natural environment? ❑ 0 ❑ ❑
Page# 4

Permit: NCO084387
Inspection Date: 10/22/2019
Owner - Facility: Lee S. Dukes WTP
Inspection Type: Compliance Evaluation
Equalization Basins
Yes No NA NE
Is the basin free of excessive grease?
0
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Are all pumps present?
0
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Are all pumps operable?
0
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Are float controls operable?
0
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Are audible and visual alarms operable?
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0
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# Is basin size/volume adequate?
0
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Comment: The eaualization (EQ) basin is equipped with a bvpass outlet to an unnamed tributary to
McDowell Creek. No bypasses have occurred in several years. The EQ basin is also
equipped with a high water alarm that is connected to the on -site SCADA system. The
alarm did not operate properly during the inspection; however, the alarm was repaired and
placed into operation by the following day. The ORC indicated that the alarm system will be
placed on a periodic testing schedule.
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
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Is the site free of excessive buildup of solids in center well of circular clarifier?
0
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Are weirs level?
0
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Is the site free of weir blockage?
0
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Is the site free of evidence of short-circuiting?
0
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Is scum removal adequate?
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0
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Is the site free of excessive floating sludge?
0
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Is the drive unit operational?
0
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Is the return rate acceptable (low turbulence)?
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0
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Is the overflow clear of excessive solids/pin floc?
0
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Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
0
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Comment:
De -chlorination
Yes No NA NE
Type of system ?
Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)?
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0
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Is storage appropriate for cylinders?
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0
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# Is de -chlorination substance stored away from chlorine containers?
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0
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Are the tablets the proper size and type?
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0
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Comment: The equalization basin effluent is dechlorinated prior to entering the clarifier. The clarifier
effluent is also dechlorinated and passes through the dechlorination contact chamber prior
to flow measurement and discharge. Aqueous sodium bisulfite is used for dechlorination.
Page# 5

Permit: NC0084387 Owner - Facility: Lee S. Dukes WTP
Inspection Date: 10/22/2019 Inspection Type: Compliance Evaluation
De -chlorination Yes No NA NE
Are tablet de -chlorinators operational? ❑ ❑ 0 ❑
Number of tubes in use?
Comment:
Chemical Feed
Yes No NA NE
Is containment adequate?
0
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Is storage adequate?
0
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Are backup pumps available?
0
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Is the site free of excessive leaking?
0
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Comment:
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
0
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Is flow meter calibrated annually?
0
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Is the flow meter operational?
0
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(If units are separated) Does the chart recorder match the flow meter?
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0
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Comment: The flow meter is calibrated annually and was last calibrated on 3/11/19 by Charlotte
Water's Instrument & Controls personnel.
Effluent Pipe
Yes No NA NE
Is right of way to the outfall properly maintained?
0
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Are the receiving water free of foam other than trace amounts and other debris?
0
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If effluent (diffuser pipes are required) are they operating properly?
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0
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Comment: The effluent appeared clear with no floatable solids or foam. The receiving stream did not
appear to be negatively impacted.
Solids Handling Equipment
Is the equipment operational?
Is the chemical feed equipment operational?
Is storage adequate?
Is the site free of high level of solids in filtrate from filter presses or vacuum filters?
Is the site free of sludge buildup on belts and/or rollers of filter press?
Is the site free of excessive moisture in belt filter press sludge cake?
The facility has an approved sludge management plan?
Yes No NA NE
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Page# 6

Permit: NCO084387
Inspection Date: 10/22/2019
Owner - Facility: Lee S. Dukes WTP
Inspection Type: Compliance Evaluation
Solids Handling Equipment Yes No NA NE
Comment: The facilitv is eauiDDed with a aravitv sludae thickener and sludae storaae laaoon (concrete
sides with clay lined bottom). Facility staff had lowered the water level and placed an
absorbent boom in the gravity thickener to address an oil leakage/sheen. The leakage was
in the process of being repaired.
The sludge lagoon supernate (manually discharged) is combined with the dechlorinated
clarifier effluent prior to flow measurement and discharge to the receiving stream.
The sludge is land applied by a contracted company (Synagro) under the authority of Permit
No. WQ0000057.
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