NC0043532_Compliance Inspection_20190129

ROY COOPER
G&v-�rrlor
K41 HAEL S. RECAN
Secretary
LINDA CULPEPPER
arwtpr
Certified Mail # 7016 1370 0000 2591 1308
Return Receipt Requested
Mr. Duane Wingo
Stanly County
1000 North 1st Street, Suite 12
Albemarle, NC 28001
NORTH CAROLINA
Environmental Qual"
February 11, 2019
SUBJECT: NOTICE OF VIOLATION
Tracking Number: NOV-2019-PC-0069
Permit No. NCO043532
West Stanly WWTP
Stanly County
Dear Mr. Wingo:
The North Carolina Division of Water Resources conducted an inspection of the West Stanly WWTP on January
29, 2019. This inspection was conducted to verify that the facility is operating in compliance with the conditions
and limitations specified in NPDES WW Permit No. NC0043532. A summary of the findings and comments noted
during the inspection are provided in the enclosed copy of the inspection report.
The Compliance Evaluation inspection was conducted by Division of Water Resources staff from the Mooresville
Regional Office. The following violation(s) were noted during the inspection:
Inspection Area Description of Violation
Chemical Feed A tote located in pump station is being used to mix Potassium Permanganate (KMn04)
and water to apply to influent waste stream to reduce odors. Appropriate safety
equipment, including eye protection, should be used when mixing chemicals. An
adequate eye wash station should be available. Potassium Permanganate (KMn04) can
cause severe skin burns and eye damage.
NortNCaro I,naDepartmer.tofErv:rar.irerta Quairty I DimsionofWater Resources
Woo reav:15ERegom:Off.-oe 1 610 East Denier Avenue, Suite 3011 Mooresv �e,North 03raiina2S115

Inspection Area
Description of Violation
Disinfection -Gas
At the time of inspection, a dye test was conducted on chlorine contact basin. Flow was
recorded at 416 gallons per minute. Time recorded for dye to travel half way through
chlorine contact basin was 18 minutes. Total detention time of 36 minutes was recorded.
Travel pattern of dye was observed in chlorine contact basin and appeared to be well
mixed. During dye test, it was noted chlorine contact basin had grease build up at effluent
water line. Debris was floating on surface at head of basin. Small balls of grease were
noted going over discharge weir.
Secondary Clarifier
At time of inspection, only one of three secondary clarifiers was in operation. At time of
inspection, influent flow was at 416 gallons per minute (0.599 gallons per day), solids were
starting to pick up and wash out of secondary clarifier.
Bar Screens
Mechanical bar screen located at influent pump station was not operational and flow was
being bypassed to manual screen. Flow had not been isolated from mechanical screen. It was
noted that bar screen has been down since hurricane Florence in September 2018.
Pump Station - Influent
Grease build up was noted on sides of influent channel leading into pump station. There
was also a strong odor of hydrogen sulfide gas (H2S) around influent channel and pump
station. Hydrogen sulfide is very poisonous to the respiratory system, explosive,
flammable and colorless. Basement of pump station should have properly operating vent
fans with switches placed at top of stairs. Personnel should allow adequate time for
stairwell and basement to vent before entry.
Operations & Maintenance
Grease was noted in chlorine contact basin and suspended in effluent being discharged.
Trash cans full of debris and grease should be disposed of properly to prevent being a
vector attraction. Floating solids on chlorine contact basin should be regularly removed to
prevent vector attraction. Solids should be pumped from chlorine contact basin on
regular schedule to prevent build-up.
In addition, the issues below must also be addressed:
Compliance Issue(s):
- Mechanical bar screen should be repaired and placed back in service
- Potassium Permanganate (KMnO4) should be added upstream of pump station to reduce odor at
McCoy Creek pump station and abate complaints from neighbors.
- An evaluation should be conducted to determine if the two non -operational secondary clarifiers
can be repaired and placed back in operation to reduce hydraulic overload on last operating
clarifier and, if practical, operated until facility upgrades require demolition. A copy of the
evaluation report is requested to be sent to DWQ Mooresville Regional Office.
- Grease and solids should be removed from chlorine contact basin on regular schedule. Debris
collected from chlorine contact basin should be removed promptly and disposed of properly to
prevent vector attraction.
- Appropriate safety protection equipment should be available at chemical mixing stations.
- Appropriate signage should be displayed on all sides of fence around pump stations and
wastewater treatment plant.
NortY Cara- na Departmer.tof Erv:rorrr.erts'Qua: ly I Mrsoftof Water Resourozs
Mooresv eF fl•:lra Off Del 610 Ea2l,enterAvenue, Suae3011 Moore—.v e, North Dsro-:na28115

Please be advised that in accordance with your NPDES Permit NC0043532, Part II, Section C, Proper
Operation and Maintenance; the Permittee shall at all times provide the operation and maintenance
resources necessary to operate the existing facilities at optimum efficiency. The Permittee shall at all
times properly operate and maintain all facilities and systems of treatment and control (and related
appurtenances) which are installed or used by the Permittee to achieve compliance with the
conditions of this permit.
NOTE: Properly and officially designated operators are fully responsible for all proper operation and
maintenance of the facility, and all documentation required thereof, whether acting as a contract
operator [subcontractor] or a member of the Permittee's staff.
Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. The Division of Water Resources may pursue enforcement action for this and any additional violations of
State law.
To prevent further action, please respond in writing to this office within 30 days upon your receipt of this Notice
of Violation regarding your plans or measures to be taken to address the indicated violations and other identified
issues, if applicable. If you should have any questions, please do not hesitate to contact Roberto Scheller with the
Water Quality Regional Operations Section in the Mooresville Regional Office at 704-663-1699.
Sincerely,
DocuSigned by:
A14CC681 AF27425...
W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources, NCDEQ
ATTACH M E NTS
Cc: Laserfich
NPDES Compliance/Enforcement Unit - Enforcement File
North Carolina Depart mentof Env:ronrnents!Quality I Div -so a of Water Resoumes
Woo resv-17eReg*m-Offce1610Ea2l CeDler Ave rkae,Saae3011WcoresvihE,North Qtrohrha2S115

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 15 I 3 I NCO043532 111 12 I 19/01/29 I17 18 I S J 19 LG] 201 I
211111 1 1 1 1 1 111 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 111 1 1 1 1 1 166
Inspection Work Days Facility Self-Monitoring Evaluation Rating 131 QA ----------------------Reserved-------------------
67 70 I
I2 71 I tyI 72 I r l 73 � I 74 751 I I I 1 1 1 I80
uI
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)
10:24AM 19/01/29
18/12/01
West Stanly WWTP
24939-B Barbees Grove Rd
Exit Time/Date
Permit Expiration Date
Oakboro NC 28129
12:55PM 19/01/29
23/01/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Tommy Gibbons/ORC/910-605-1284/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Andy Lucas,1000 N 1st St Ste 12 Albemarle NC 28001//704-986-3601/7049863711
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
DocuSigned by:
Roberto Scheller C� MRO WQ//252-946-6481/ 2/8/2019
Cj91C2A007838943E—
Signatureof Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
DocuSigned by:
eyj � 2/11/2019
AlaccsalAFvazs... Page#

NPDES yr/mo/day Inspection Type
NCO043532 111 121 19/01/29 1 17 18 JCJ
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

Permit: NCO043532 Owner - Facility: West Stanly WWTP
Inspection Date: 01/29/2019 Inspection Type: Compliance Evaluation
Yes No NA NE
Are records kept and maintained as required by the permit?
0
❑
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
0
❑
application?
0
❑
❑
❑
Is the facility as described in the permit?
0
❑
❑
❑
# Are there any special conditions for the permit?
0
❑
❑
❑
Is access to the plant site restricted to the general public?
0
❑
❑
❑
Is the inspector granted access to all areas for inspection?
0
❑
❑
❑
Comment: Current permit was issued 10/19/2019 and expires 01/31/2023.
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
0
❑
❑
❑
Is all required information readily available, complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
0
❑
❑
❑
Is the chain -of -custody complete?
0
❑
❑
❑
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 CM
Are DMRs complete: do they include all permit parameters?
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
❑
❑
❑
on each shift?
Is the ORC visitation log available and current?
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
❑
❑
❑
Is a copy of the current NPDES permit available on site?
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
❑
❑
❑
Comment: Reports reviewed include process control, DMRs, Lab analysis, COC's, and field
equipment calibration logs.
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? 0 ❑ ❑ ❑
Page# 3

Permit: NCO043532 Owner - Facility: West Stanly WWTP
Inspection Date: 01/29/2019 Inspection Type: Compliance Evaluation
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
0
❑
Laboratory
Yes No NA NE
Are all other parameters(excluding field parameters) performed by a certified lab?
0
❑
❑
❑
# Is the facility using a contract lab?
0
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
0
❑
❑
❑
Celsius)?
0
❑
❑
❑
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
❑
❑
❑
0
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
❑
❑
❑
0
Comment: Facilitv uses contract lab Environmental 1 (Certification #10) and Meritech (Certification #27
for toxicity testing.
In accordance with 15A NCAC 02H .0805 Certification and Renewal of Certification, (7) (0),
"All thermometers must meet National Institute of Standards and Technology (NIST)
specifications for accuracy or be checked, at a minimum annually, against a NIST traceable
thermometer and proper corrections made." Maintenance of NIST thermometers should be
done per NIST Special Publication 1088, Maintenance, Validation, and Recalibration of
Liquid -in -Glass Thermometers.
Pump Station - Influent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
0
❑
❑
❑
Is the wet well free of excessive grease?
❑
0
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
0
❑
❑
❑
Is audible and visual alarm available and operational?
0
❑
❑
❑
Comment: Grease build uD was noted on sides of influent channel leadina into pump station. There was
also a strong odor of hydrogen sulfide pas (H2S) around influent channel and pump station.
Hydrogen sulfide is very poisonous to the respiratory system, explosive, flammable and
colorless. Basement of pump station should have properly operating vent fans with switches
placed at top of stairs. Personnel should allow adequate time for stairwell and basement to
vent before entry.
Appropriate signage should be displayed on all sides of fence around pump station.
Bar Screens
Yes No NA NE
Type of bar screen
a.Manual
❑
b.Mechanical
0
Are the bars adequately screening debris?
0
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
0
❑
❑
❑
Page# 4

Permit: NCO043532
Inspection Date: 01/29/2019
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Evaluation
Bar Screens Yes No NA NE
Is the unit in good condition? ❑ 0 ❑ ❑
Comment: Mechanical bar screen located at influent pump station was not operational and flow was
being by passed to manual screen. Flow had not been isolated from mechanical screen. It
was noted that mechanical bar screen has been down since hurricane Florence in
September 2018.
Influent Sampling
Yes No NA NE
# Is composite sampling flow proportional?
❑
0
❑
❑
Is sample collected above side streams?
0
❑
❑
❑
Is proper volume collected?
0
❑
❑
❑
Is the tubing clean?
0
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
0
❑
❑
❑
Celsius)?
0
❑
# Is disposal of grit in compliance?
❑
Is sampling performed according to the permit?
0
❑
❑
❑
Comment: At time of inspection influent sampler was recorded at 3.4 degrees Celsius.
Grit Removal
Yes
No
NA
NE
Type of grit removal
❑
Is storage adequate?
❑
0
a.Manual
❑
Are backup pumps available?
❑
❑
b.Mechanical
0
Is the site free of excessive leaking?
❑
❑
Is the grit free of excessive organic matter?
❑
❑
0
❑
Is the grit free of excessive odor?
❑
❑
0
❑
# Is disposal of grit in compliance?
❑
❑
0
❑
Comment: Grit removal was not operating at time of inspection.
Chemical Feed
Yes No NA NE
Is containment adequate?
❑
0
❑
❑
Is storage adequate?
❑
0
❑
❑
Are backup pumps available?
❑
❑
❑
0
Is the site free of excessive leaking?
❑
❑
❑
0
Comment: A tote located in DumD station is beina used to mix Potassium Permanaanate (KMn04) and
water to apply to influent waste stream to reduce odors. Appropriate safety equipment,
including eve protection, should be used when mixing chemicals. An adequate eve wash
station should be avalible. Potassium Permanganate (KMn04) causes sever skin burns and
eve damage.
Page# 5

Permit: NCO043532 Owner - Facility: West Stanly WWTP
Inspection Date: 01/29/2019 Inspection Type: Compliance Evaluation
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Surface
Is the basin free of dead spots?
0
❑
❑
❑
Are surface aerators and mixers operational?
0
❑
❑
❑
Are the diffusers operational?
❑
❑
0
❑
Is the foam the proper color for the treatment process?
0
❑
❑
❑
Does the foam cover less than 25% of the basin's surface?
❑
0
❑
❑
Is the DO level acceptable?
❑
❑
❑
0
Is the DO level acceptable?(1.0 to 3.0 mg/1)
❑
❑
❑
0
Comment: Surface aerators were operational at time of inspection.
A frothy foam covered more that 25% of surface of aeration basin.
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
❑
0
❑
❑
Are weirs level?
0
❑
❑
❑
Is the site free of weir blockage?
0
❑
❑
❑
Is the site free of evidence of short-circuiting?
0
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
0
❑
❑
❑
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
❑
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
❑
❑
❑
0
Comment: At time of inspection only one of three secondary clarifiers were in operation.
Influnt flow was
at 416 gallons per minute (0.599 gallons per day), soilds were starting
to pick up and wash
out of secondary. It is recommended an evaluation be conducted on feasibility to place two
non -operational clarifiers back into service.
Disinfection -Gas
Yes No NA NE
Are cylinders secured adequately?
0
❑
❑
❑
Are cylinders protected from direct sunlight?
0
❑
❑
❑
Is there adequate reserve supply of disinfectant?
0
❑
❑
❑
Is the level of chlorine residual acceptable?
❑
❑
❑
0
Is the contact chamber free of growth, or sludge buildup?
❑
0
❑
❑
Page# 6

Permit: NCO043532 Owner - Facility: West Stanly WWTP
Yes No NA NE
Is the capacity adequate?
0
❑
Inspection Date: 01/29/2019 Inspection Type: Compliance Evaluation
❑
Is the mixing adequate?
0
❑
Disinfection -Gas
Yes No NA NE
Is there chlorine residual prior to de -chlorination?
❑
❑
❑
0
Does the Stationary Source have more than 2500 lbs of Chlorine (CAS No. 7782-50-5)?
❑
0
❑
❑
If yes, then is there a Risk Management Plan on site?
❑
❑
0
❑
If yes, then what is the EPA twelve digit ID Number? (1000 -
If yes, then when was the RMP last updated?
Comment: At time of inspection a dve test was conducted on chlorine contact basin. Flow was
recorded at 416 gallons per minute. Time recorded for dye to travel half way through chlorine
contact basin was 18 minutes. Total detention time of 36 minutes was recorded. Travel
pattern of dye was observed in chlorine contact basin and appeared to be well mixed. During
dye test it was noted chlorine contact basin had grease build up at effluent water line. Debris
was floating on surface at head of basin. Small ball of grease were noted going over
discharge weir.
Aerobic Digester
Yes No NA NE
Is the capacity adequate?
0
❑
❑
❑
Is the mixing adequate?
0
❑
❑
❑
Is the site free of excessive foaming in the tank?
0
❑
❑
❑
# Is the odor acceptable?
0
❑
❑
❑
# Is tankage available for properly waste sludge?
0
❑
❑
❑
Comment: Aerobic digester was operational at time of inspection.
Pump Station - Effluent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
0
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
0
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
❑
❑
0
❑
Is audible and visual alarm available and operational?
0
❑
❑
❑
Comment: Effluent pumps were operating at time of inspection.
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
0
❑
❑
❑
Is sample collected below all treatment units?
0
❑
❑
❑
Is proper volume collected?
0
❑
❑
❑
Is the tubing clean?
0
❑
❑
❑
Page# 7

Permit: NCO043532 Owner - Facility: West Stanly WWTP
Inspection Date: 01/29/2019 Inspection Type: Compliance Evaluation
Effluent Sampling Yes No NA NE
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees 0 ❑ ❑ ❑
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑
representative)?
Comment: At time of inspection effluent sampler was recorded at 3 degrees Celsius.
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
0
❑
❑
❑
Is flow meter calibrated annually?
0
❑
❑
❑
Is the flow meter operational?
0
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
0
❑
❑
❑
Comment: Last calibration of effluent flow meter was recorded on 8/29/2018.
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 ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: Grease was noted in chlorine contact basin and susDended in effluent beina discharaed
Trash cans full of debris and grease should be disposed of properly to prevent being a
vector attraction. Floating solids on chlorine contact basin should be regularly removed to
prevent vector attraction. Solids should be pumped from chlorine contact basin on regular
schedule to prevent build-up.
Trees were noted growing up on fence line. Appropriate signage should be displayed on all
sides of fence around WWTP.
Standby Power
Yes No NA NE
Is automatically activated standby power available?
0
❑
❑
❑
Is the generator tested by interrupting primary power source?
0
❑
❑
❑
Is the generator tested under load?
❑
❑
❑
0
Was generator tested & operational during the inspection?
❑
❑
❑
0
Do the generator(s) have adequate capacity to operate the entire wastewater site?
0
❑
❑
❑
Is there an emergency agreement with a fuel vendor for extended run on back-up power?
0
❑
❑
❑
Is the generator fuel level monitored?
0
❑
❑
❑
Comment:
Page# 8