NC0037371_Compliance Evaluation Inspection_20200727

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 1 2 u 3 I NCO037371 I11 121 20/07/16 I17 18I � I 19 I s I 201 I
211IIIII 111111III II III III1 I I IIIII IIIIIIIII II r6
Inspection
Work Days Facility Self -Monitoring Evaluation Rating 131 QA ---------------------- Reserved -------------------
67
2.0 701d I 71 I„ I 72 I r., I 71 I 74 79
L—I tyI I I I I I I I I80
L-1
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 Dermit Number)
01:52PM 20/07/16
19/04/01
North Iredell High School
156 Raider Rd
Exit Time/Date
Permit Expiration Date
Olin NC 28660
02:52PM 20/07/16
24/03/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Dennis W Murdock/ORC/828-238-4659/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Kenny Miller,350 Old Murdock Rd Troutman NC 281669699//704-873-3755/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit 0 Flow Measurement Operations & Maintenar Records/Reports
Self -Monitoring Progran 0 Sludge Handling Dispo: Facility 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(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Wes Bell Docusigned by: DWR/MRO WQ/704-663-1699 Ext.2192/
7/27/2020
Be&
A61696D90CC3437...
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
W. Corey Basinger DWR/Division of Water Quality/704-235-2194/
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
DocuSigned by:
7/27/2020
AlaccsalAi=vazs... Page#

NPDES yr/mo/day Inspection Type
NC0037371 I11 12I 20/07/16 117 18 i c i
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
On -Site Representatives:
The following Envirolink personnel were in attendance during the inspection: Josh Powers, Chip White
and Dennis Murdock.
Page#

Permit: NCO037371 Owner - Facility: North Iredell High School
Inspection Date: 07/16/2020 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
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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?
0
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Is the inspector granted access to all areas for inspection?
0
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Comment: The last compliance evaluation inspection at the facility was performed by DWR staff on
8/31 /18.
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 operatc
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?
IY411111111►[•7►/M►1M
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Comment: The records reviewed durina the insDection were oraanized and well maintained. Discharae
Monitoring Reports (eDMRs) were reviewed for the period June 2019 through May 2020.
Effluent TSS violations (daily maximum and monthly average) were reported in June and
November 2019. Fecal Coliform daily maximum effluent violations were reported in June,
July and September 2019. The Division has separately addressed these limit violations
through the issuances of either NOVs or NOV/civil penalty assessments.
Page# 3

Permit: NCO037371 Owner - Facility: North Iredell High School
Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
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 (dissolved oxvaen. DH. temDerature. total residual chlorine) are
performed under Envirolink's field laboratory certification #5212. Statesville Analytical
(Certification #440) has also been contracted to provide analytical support.
The ORC must ensure to perform post -analysis calibration checks on the PH meter and
total residual chlorine meter (if mid -range checks are not performed at each site) if these
field analyses are performed at multiple sites throughout a day. Post -analysis calibration
checks must be performed in accordance with the NC Wastewater/Groundwater laboratory
certification approved procedures for the analyses of pH and total residual chlorine .
Effluent Sampling
Yes
No
NA
NE
Is composite sampling flow proportional?
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0
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Is sample collected below all treatment units?
0
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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 ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: The wastewater treatment facility appeared to be properly operated and well maintained.
Process control measurements were beina Derformed and documented.
Bar Screens
Type of bar screen
Yes No NA NE
Page# 4

Permit: NCO037371 Owner - Facility: North Iredell High School
Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation
Bar Screens Yes No NA NE
a.Manual
b.Mechanical
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Are the bars adequately screening debris?
0
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Is the screen free of excessive debris?
0
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Is disposal of screening in compliance?
0
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Is the unit in good condition?
0
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Comment:
Grease Removal
Yes
No
NA
NE
# Is automatic grease removal present?
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0
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Is grease removal operating properly?
0
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Comment:
Equalization Basins
Yes
No
NA
NE
Is the basin aerated?
0
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Is the basin free of bypass lines or structures to the natural environment?
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Is the basin free of excessive grease?
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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?
0
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# Is basin size/volume adequate?
0
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Comment:
Aeration Basins
Yes No
NA
NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
0 ❑
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Are surface aerators and mixers operational?
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0
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Are the diffusers operational?
0 ❑
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Is the foam the proper color for the treatment process?
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Does the foam cover less than 25% of the basin's surface?
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Is the DO level acceptable?
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Page# 5

Permit: NCO037371
Inspection Date: 07/16/2020
Owner - Facility: North Iredell High School
Inspection Type: Compliance Evaluation
Aeration Basins Yes No NA NE
Is the DO level acceptable?(1.0 to 3.0 mg/1) ❑ ❑ 0 ❑
Comment: Lime is added on an as -needed basis to maintain appropriate alkalinity/pH levels.
The facility staff must ensure to replace one belt and replace/clean two air filters on the
blower/motor units for the aeration basin.
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?
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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?
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)?
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'/ of the sidewall depth)
0
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Comment:
Disinfection -Tablet
Yes
No
NA NE
Are tablet chlorinators operational?
0
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Are the tablets the proper size and type?
0
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Number of tubes in use?
2
Is the level of chlorine residual acceptable?
0
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Is the contact chamber free of growth, or sludge buildup?
0
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Is there chlorine residual prior to de -chlorination?
0
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Comment: Calcium Hypochlorite is used for disinfection.
De -chlorination
Yes
No
NA NE
Type of system ?
Tablet
Is the feed ratio proportional to chlorine amount (1 to 1)?
M
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Is storage appropriate for cylinders?
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# Is de -chlorination substance stored away from chlorine containers?
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0 ❑
Comment:
Page# 6

Permit: NC0037371 Owner - Facility: North Iredell High School
Inspection Date: 07/16/2020 Inspection Type: Compliance Evaluation
De -chlorination Yes No NA NE
Are the tablets the proper size and type? 0 ❑ ❑ ❑
Are tablet de -chlorinators operational? 0 ❑ ❑ ❑
Number of tubes in use? 4
Comment: Sodium Sulfite is used for dechlorination.
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 11/1/19 by Delta Systems
Environmental.
Effluent Pipe
Yes
No
NA
NE
Is right of way to the outfall properly maintained?
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Are the receiving water free of foam other than trace amounts and other debris?
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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
Aerobic Digester
Yes
No
NA
NE
Is the capacity adequate?
0
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Is the mixing adequate?
0
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Is the site free of excessive foaming in the tank?
0
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# Is the odor acceptable?
0
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# Is tankage available for properly waste sludge?
0
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Comment: The facility is equipped with an aerated sludge holding tank. Lentz Septic Service has been
contracted to remove sludae on an as -needed basis.
Page# 7