NC0043532_Compliance Evaluation Inspection_20220902

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Andy Lucas
Stanly County
1000 N 1st Street, Suite 12
Albemarle, NC 28001
SUBJECT: Compliance Sampling Inspection
West Stanly WWTP
NPDES Permit NC0043532
Rowan County
Mr. Lucas:
NORTH CAROLINA
Environmental Quality
September 2, 2022
On August 23, 2022, Roberto Scheller of this Office conducted a compliance inspection at the subject facility.
This inspection was conducted as a Compliance Sampling Inspection (CSI) to ensure compliance with permit
requirements and conditions. At the time of inspection samples were collected for BOD, TSS, and NH3 as N and
sent to the State Laboratory in Raleigh for analysis. Test results will be forwarded to you under separate cover.
The subject facility appeared to be well operated and maintained; however, it was noted during inspection issues
with the newly installed influent screening equipment. Screening device had a large amount of build-up on screen
and the screen washing device did not appear to be operating properly.
We wish to thank the operator for his assistance regarding this inspection. The enclosed report should be
self-explanatory; however, should you have any questions, please contact myself or Roberto Scheller at (704)
235-2204 or roberto.scheller©ncdenr.gov.
Sincerely,
DocuSigned by:
A4.41144, H Nut*.
�F161FB69A2D84A3...
Andrew Pitner, P.G., Assistant Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Enclosure: Compliance Evaluation Inspection Report
cc: Laserfiche
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North Carolina Department of Environmental Quality 1 Division of Water Resources
Mooresville Regional Office 1610 East Center Avenue, Suite 301 1 Mooresville. North Carolina 28115
704.663.1699

United States Environmental Protection Agency
E PA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction
1 IN
Code
I 2
L
NPDES yr/mo/day Inspection Type Inspector Fac
3 I NC0043532 111 121 22/08/23 117 181 I 191 s I 2011
Type
21IIIIII
IIIIIIIIIII
IIIIIII
I
IIIIII
IIIIIIIIIII
P6
Inspection
671
Work Days
Facility Self -Monitoring
I 70
I3
Evaluation Rating
I 711
B1
1
72
QA
I N I
73
i I
I I
Reserved
74 71
I
I I
I
I
I
180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES oermit Number)
West Stanly WWTP
24939-B Barbees Grove Rd
Oakboro NC 28129
Entry Time/Date
10:05AM 22/08/23
Permit Effective Date
18/12/01
Exit Time/Date
12:10PM 22/08/23
Permit Expiration Date
23/01/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Tommy Gibbons/ORC/910-605-1284/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Andy Lucas,1000 N 1st St Ste 12 Albemarle NC 28001/County
Manager/704-986-3601/7049863711 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
Self -Monitoring Progran Sludge Handling DispoFacility Site Review Compliance Schedules
Effluent/Receiving Wate Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s)
Roberto Scheller
of Inspector(s) Agency/Office/Phone and Fax Numbers Date
.-DocuSigned I�vby:
� ` •,
��1'll� S.d, , ", ,,, DWR/MRO WQ/707-235-2204/9/1/2022
-91C2A007838943E...
Signature of Mana
Andrew Pitne
@i�nayewer Agency/Office/Phone and Fax Numbers Date
414" H PAR/MRO WQ/704-663-1699 Ext.2180/ 9/2/2022
F161F969A2D84A3„
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

31
NPDES yr/mo/day
N C0043532 111 121 22/08/23
117
Inspection Type
18i i
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The current permit became effective December 1, 2018 and expires on January 31, 2023. Permit is
for the discharge of wastewater into the Rocky River (Outfall #002) and Long Creek (Outfall #001).
Both discharge locations are classified as C waters in the Yadkin -Pee Dee River Basin. This facility
expanded from 0.9 MGD to 1.2 MGD WWTP under Authorization to Construct #043532A01 and SOC
S19-003.
The subject inspection was conducted as a Compliance Sampling Inspection during which samples
were split with WWTP operator for BOD, NH3 as N, and TSS. Analysis will be sent under seperate
cover.
It was noted during facility review that influent screen had a large amount of solids build-up on screen
and appeared that wash cycle is not operating properly.
Page# 2

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ ❑
application?
Is the facility as described in the permit? • ❑ El El
# Are there any special conditions for the permit? • ❑ ❑ ❑
Is access to the plant site restricted to the general public? • ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? • ❑ ❑ ❑
Comment:
Record Keeping
Are records kept and maintained as required by the permit?
Is all required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DMRs?
Is the chain -of -custody complete?
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?
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: 2021-2022 Annual Report on Stanly County Utilities (SCU) website.
Laboratory
Are field parameters performed by certified personnel or laboratory?
Yes No NA NE
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Yes No NA NE
Page# 3

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Laboratory Yes No NA NE
Are all other parameters(excluding field parameters) performed by a certified lab?
# Is the facility using a contract lab?
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
degrees Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
II El El El
• ❑ ❑ ❑
❑ ❑ • ❑
• ❑ • ❑
Comment: Facility uses contract labs Environmental 1 (Cert.#10), Meritech (Cert.#27), and on site
Field Certification (Cert.#56711.
Bar Screens Yes No NA NE
Type of bar screen
a.Manual ❑
b.Mechanical •
Are the bars adequately screening debris? ❑ • ❑ ❑
Is the screen free of excessive debris? ❑ • ❑ ❑
Is disposal of screening in compliance? • ❑ ❑ ❑
Is the unit in good condition? • ❑ ❑ ❑
Comment: Influent screen has large amount of build up on screen and appears that wash cycle is
not operating properly.
Grit Removal
Type of grit removal
a.Manual
b.Mechanical
Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
Comment:
Influent Sampling
# Is composite sampling flow proportional?
Is sample collected above side streams?
Is proper volume collected?
Is the tubing clean?
Yes No NA NE
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Yes No NA NE
Page# 4

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Influent Sampling
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
degrees Celsius)?
Is sampling performed according to the permit?
Comment: At time of inspection influent sampler was recorded at 4 degrees C.
Yes No NA NE
• ❑ ❑ ❑
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Surface
Is the basin free of dead spots? • ❑ El ❑
Are surface aerators and mixers operational? • El El El
Are the diffusers operational? ❑ El • ❑
Is the foam the proper color for the treatment process? ■ El El El
Does the foam cover less than 25% of the basin's surface? • El ❑ ❑
Is the DO level acceptable? El El El •
Is the DO level acceptable?(1.0 to 3.0 mg/I) ❑ El ❑ •
Comment:
Secondary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? • ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier? • El El El
Are weirs level? • El El El
Is the site free of weir blockage? • El El El
Is the site free of evidence of short-circuiting? • ❑ ❑ ❑
Is scum removal adequate? • El El El
Is the site free of excessive floating sludge? • El El El
Is the drive unit operational? • El El El
Is the return rate acceptable (low turbulence)? • ❑ ❑ ❑
Is the overflow clear of excessive solids/pin floc? ■ El El El
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) El El El •
Comment:
Pumps-RAS-WAS
Are pumps in place?
•
Yes No NA NE
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Page# 5

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Pumps-RAS-WAS
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
Disinfection -Gas
Are cylinders secured adequately?
Are cylinders protected from direct sunlight?
Is there adequate reserve supply of disinfectant?
Is the level of chlorine residual acceptable?
Is the contact chamber free of growth, or sludge buildup?
Is there chlorine residual prior to de -chlorination?
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:
Yes No NA NE
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Yes No NA NE
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De -chlorination Yes No NA NE
Type of system ? Gas
Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ ❑ •
Is storage appropriate for cylinders? • ❑ ❑ ❑
# Is de -chlorination substance stored away from chlorine containers? • ❑ ❑ ❑
Comment:
Are the tablets the proper size and type?
Are tablet de -chlorinators operational?
Number of tubes in use?
Comment:
Effluent Sampling
Is composite sampling flow proportional?
Is sample collected below all treatment units?
Is proper volume collected?
❑ ❑ ■ ❑
Yes No NA NE
Page# 6

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Effluent Sampling Yes No NA NE
Is the tubing clean? •❑ ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 ■ ❑ ❑ ❑
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type • El El El
representative)?
Comment: At time of inspection effluent sampler was recorded at 3.0 degrees C.
Pump Station - Effluent Yes No NA NE
Is the pump wet well free of bypass lines or structures? ■ ❑ ❑ ❑
Are all pumps present? • El El El
Are all pumps operable? • El El El
Are float controls operable? • ❑ ❑ ❑
Is SCADA telemetry available and operational? ❑ ❑ ❑ •
Is audible and visual alarm available and operational? El El El •
Comment:
Flow Measurement - Effluent
# Is flow meter used for reporting?
Is flow meter calibrated annually?
Is the flow meter operational?
(If units are separated) Does the chart recorder match the flow meter?
Comment: Last calibration 11/16/2021.
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up
power?
Is the generator fuel level monitored?
Comment:
Yes No NA NE
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Yes No NA NE
▪ El El El
Page# 7

Permit: NC0043532
Inspection Date: 08/23/2022
Owner - Facility: West Stanly WWTP
Inspection Type: Compliance Sampling
Compliance Schedules
Is there a compliance schedule for this facility?
Is the facility compliant with the permit and conditions for the review period?
Comment: Facility under SOC S19-003.
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Yes No NA NE
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Yes No NA NE
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Page# 8