NC0023884_CEI_20221031

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Ms. Sonja Basinger
Environmental Services Manager
City of Salisbury
1915 Grubb Ferry Road
Salisbury, NC 28144
Dear Ms. Basinger:
NORTH CAROLINA
Environmental Quality
October 31, 2022
SUBJECT: Compliance Evaluation Inspection
Grant Creek/Town Creek WWTP
NPDES Permit NC0023884
Rowan County
On October 6, 2022, Roberto Scheller of this Office conducted a compliance inspection at the
subject facilities. This inspection was conducted as a Compliance Evaluation Inspection (CEI) to
ensure compliance with permit requirements and conditions. The subject facilities appeared to
be well operated. We wish to thank the operating staff for assistance regarding this inspection.
The enclosed report should be self-explanatory; however, should you have any questions,
please do not hesitate to contact myself or Roberto Scheller at [phone] or
roberto.scheller©ncdenr.gov.
Enclosure: CEI Report
Sincerely,
DocuSigned by:
C
44 44t4v H P; zy. 4
F161 FB69A2D84A3...
Andrew H. Pitner, Assistant Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
CC: Charles Wood (ORC) email: [e-mail]
GDE
NORTH C OLI JA '
omm m�� ep..of o�.i
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

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 Code
1 IN I 2 L
21IIIIII
IIIIIIIIIII
NPDES yr/mo/day Inspection
3 I NC0023884 111 121 22/10/06 117
Type
18 i i
IIIIIIIIIII
Inspector Fac Type
19 I S I 201
IIIIIII I IIIIII
P6
Inspection Work Days
671
Facility Self -Monitoring Evaluation Rating B1 QA Reserved
I 70I3 I 711 1 72 I N I 731 I 74 71
I I
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 permit Number)
City of Salisbury WWTP
1915 Grubb Ferry Rd
Salisbury NC 281444261
Entry Time/Date
09:41AM 22/10/06
Permit Effective Date
22/07/01
Exit Time/Date
12:42PM 22/10/06
Permit Expiration Date
27/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Sonja Basinger,1915 Grubb Ferry Rd Salisbury NC 281444261/Env. Services
Manager/704-638-5375/ 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 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
Roberto Scheller
t atar4:) Agency/Office/Phone and Fax Numbers Date
�(iD S.� 10/25/2022
DWR/MRO WQ/707-235-2204/
91 C2A007838943E...
Signature of Man
Andrew Pitne
emeiftua 4eiWiewer Agency/Office/Phone and Fax Numbers Date
A".` H P'/R/MRO WQ/704-663-1699 Ext.2180/ 10/31/2022
F161 FB69A2D84A3...
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

31
NPDES yr/mo/day
N C 0023884 111 121 22/10/06
117
Inspection Type
18 [j
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Permit became effective July 1, 2022 and expires June 30, 2027. Inspection is for Grant Creek (7.5
MGD WWTP) and Town Creek (5.0 MGD WWTP) with a common joint discharge into the Yadkin
River. The Yadkin River is classified as WS-V waters in the Yadkin -Pee Dee River Basin.
Page# 2

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
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 El El • ❑
application?
Is the facility as described in the permit? • El El El
# Are there any special conditions for the permit? • El El El
Is access to the plant site restricted to the general public? • ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? • El El El
Comment: Permit became effective July 1, 2022 and expires June 30, 2027.
Treatment facilities for Grant Creek (GC) and Town Creek (TC) were inspected.
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? • El ❑ ❑
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? • El ❑ ❑
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: At time of inspection records were available for inspection and current..
Operations & Maintenance Yes No NA NE
Page# 3

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? • ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable El El El
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: GC & TC
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: GC & TC
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? El El El •
Is the wet well free of excessive grease? El El El •
Are all pumps present? • ❑ ❑ ❑
Are all pumps operable? • El El El
Are float controls operable? • El El El
Is SCADA telemetry available and operational? • El El El
Is audible and visual alarm available and operational? • ❑ ❑ ❑
Comment: GC
Influent Sampling
# Is composite sampling flow proportional?
Is sample collected above side streams?
Is proper volume collected?
Is the tubing clean?
# 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?
Yes No NA NE
• ❑ ❑ ❑
Page# 4

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
Inspection Type: Compliance Evaluation
Influent Sampling Yes No NA NE
Comment: At time of inspection TC influent sampler was turned off. GC influent sampler was
recorded at 2.8 degrees Celsius.
Grit Removal Yes No NA NE
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: GC & TC
Primary 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? ❑ ❑ • ❑
Are weirs level? ❑ ❑ • ❑
Is the site free of weir blockage? ❑ ❑ • ❑
Is the site free of evidence of short-circuiting? ❑ ❑ • ❑
Is scum removal adequate? ❑ ❑ • ❑
Is the site free of excessive floating sludge? ❑ ❑ • ❑
Is the drive unit operational? ❑ ❑ • ❑
Is the sludge blanket level acceptable? ❑ ❑ ❑ •
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) ❑ ❑ ❑ ❑
Comment: At time of inspection GC primary clarifiers were not in use.
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Surface
Is the basin free of dead spots? • ❑ ❑ ❑
Are surface aerators and mixers operational? • ❑ ❑ ❑
Are the diffusers operational? ❑ ❑ • ❑
Is the foam the proper color for the treatment process? • ❑ ❑ ❑
Does the foam cover less than 25% of the basin's surface? • ❑ ❑ ❑
Is the DO level acceptable? ❑ ❑ ❑ •
Page# 5

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
Inspection Type: Compliance Evaluation
Aeration Basins Yes No NA NE
Is the DO level acceptable?(1.0 to 3.0 mg/I) ❑ ❑ El •
Comment: GC & TC
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? ■ ❑ ❑ ❑
Are weirs level? • ❑ 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 ❑
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: At time of inspection GC was under construction and flow through WWTP was being
held.
Pumps-RAS-WAS
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment: GC & TC
Disinfection -Liquid
Is there adequate reserve supply of disinfectant?
(Sodium Hypochlorite) Is pump feed system operational?
Is bulk storage tank containment area adequate? (free of leaks/open drains)
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?
Comment: GC & TC
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
Yes No NA NE
Page# 6

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
Inspection Type: Compliance Evaluation
De -chlorination Yes No NA NE
Type of system ? Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)? El El El •
Is storage appropriate for cylinders? • El El El
# Is de -chlorination substance stored away from chlorine containers? • El El El
Are the tablets the proper size and type? El El • El
Comment: Dechlorination system, cascade post aeration, parshall flume, effluent sampling and
standby generator located at common discharge for GC & TC.
Are tablet de -chlorinators operational? El El • El
Number of tubes in use?
Comment:
Aerobic Digester Yes No NA NE
Is the capacity adequate? ■ El ❑ ❑
Is the mixing adequate? ■ ❑ ❑ ❑
Is the site free of excessive foaming in the tank? • ❑ El ❑
# Is the odor acceptable? • ❑ ❑ ❑
# Is tankage available for properly waste sludge? ■ ❑ ❑ ❑
Comment: GC & TC
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?
Comment: Solids are land applied under WQ0001956 for GC & TC.
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Yes No NA NE
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
❑ ❑ ❑ •
❑ ❑ ❑ •
Yes No NA NE
Page# 7

Permit: NC0023884
Inspection Date: 10/06/2022
Owner - Facility: City of Salisbury WWTP
Inspection Type: Compliance Evaluation
Standby Power
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
• ❑ ❑ ❑
Page# 8