NC0070289_NOV2017LR0017_20170617

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Certified Mail #7015 1520 0002 6984 9393
Return ReceiRt Requested
June 26, 2017
Mr. Wayne Huntley
Stones Throw Home Owners Association of Cabarrus Co. RECEIVED/NMENWR
Post Office Box 690725 r
Charlotte, North Carolina 28227 JUL 0 6 2017
Water Quality
SUBJECT: NOTICE OF VIOLATION Permitting Section
Tracking Number: NOV-2017-LR-0017
Permit No. NCO070289
Ridgewood Farms Subdivision WWTP
Cabarrus County
Dear Mr. Huntley:
The North Carolina Division of Water Resources conducted an inspection of the subject wastewater treatment plant
On June 20,2017. This inspection was conducted to verify that the facility is operating in compliance with the
conditions and limitations specified in your NPDES Permit No. NC0070289. A summary of the findings and
comments noted during the inspection are provided in the enclosed copy of the inspection report.
The 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
Bar Screens Bar screen had been removed from wastewater treatment plant The bar screen is listed
on NPDES Permit as part of the treatment equipment
Aerobic Digester Top of bulkhead between digester and aeration basin has rusted out and bulkhead may
collapse if digester is pumped all the way down Structural repairs are required
Record Keeping DMR's for the months of 12-2016, 01-2017, 02-2017, 03-2017, 04-2017 are missing and
and are not on file
In addition, the issues below must also be addressed:
Compliance Issue(s): Please be advised that in accordance with your current NPDES Permit Number NC0070289,
Part II, Section C, 2. Proper Operation and Maintenance, 'The Permittee shall at all times properly operate and
maintain all facilities and systems of treatment and control which are installed or used by the Permittee to achieve
compliance with conditions of this permit." It is necessary to replace missing bar screen and repair noted corrosion.
State of North Carolina I Environmental Quality I Water Resources

Please also note permit condition Part II, Section D., 2. Reporting, ""Monitoring results obtained during the
previous month(s) shall be summarized for each month and reported on a monthly Discharge Monitoring Report
(DMR) Form. " If missing DMR's are not recoverable enforcement will be addressed under separate cover.
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,
W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS
Cc: WQS Re io e - e File
NPDES Compliance/Enforcement Unit - Enforcement File
James Smith (ORC), email: [e-mail]
State of North Carolina I Environmental Quality I Water Resources

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
19 I G I 201
1 IN 1 2 15 I 3 I NCO070289 I11 12 17/06/20 J17 18 LICI L
LJ LJ J J LJ
2111 I I I I 1 I I 1 II IJ I I I I I I I I I I I I I I I I I I I I I II V I I I t66
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA --Reserved-
73174 751 III I I 80
72 LN
671 70 LJ 71 it
Section B FacilityData
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
10 02AM 17/06/20
14/02/01
Ridgewood Farms Subdivision
Exit Time/Date
permit Expiration Date
Olde Creek Trl
12 23P 17/06/20
18/11/30
Concord NC 28025
Name(s) of Onsite Representative(s)/Tifles(s)/Phone and Fax Number(s)
Other Facility Data
///
James Jefferson Smith/ORCl704-222-8617/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Julia Zeledon,PO Box 1495 Harrisburg NC 280751495///
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
Roberto Scheller MRO WQ//252-946-6481/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
W Corey Basinger MRO WQ//704-235-21941
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete A -*AA
Page# 1

NPDES yr/mo/day Inspection Type
31 NCO070289 I11 12 17/08/20 17 18 1 C 1
Section D Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

1�
Permit. NCO070289 Owner - Facility Ridgewood Farms Subdivision
Inspection Date 06/20/2017 Inspection Type Compliance Evaluation
Permit
Yes No NA NE
(If the present permit expires In 6 months or less) Has the permittee submitted anew
❑
❑
0
❑
application?
M
❑
❑
❑
Is the facility as described in the permit?
❑
❑
❑
❑
# 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 Bar screen was removed from waste treatment plant
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?
❑
M
❑
❑
Is all required Information readily available, complete and current?
M
❑
❑
❑
Are all records maintained for 3 years (lab reg required 5 years)?
❑
❑
0
❑
Are analytical results consistent with data reported on DMRs?
❑
❑
❑
❑
Is the chain -of -custody complete?
M
❑
❑
❑
Dates, times and location of sampling
on file Non -reporting of effluent limits is a violation of current permit conditions found in Part
Name of Individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Are MRS complete do they include all permit parameters?
M
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
M
❑
(if the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
❑
❑
M
❑
on each shift?
Is the ORC visitation log available and current?
0
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
M
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
0
❑
❑
❑
Is a copy of the current NPDES permit available on site?
M
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
❑
❑
M
❑
Comment DMR's for the months of 12-2016 01-2017, 02-2017, 03-2017, 04-2017 are missing
and not
on file Non -reporting of effluent limits is a violation of current permit conditions found in Part
I Section A (1 ) Effluent Limitations and Monitoring Requirements
Pump Station - Influent
Yes No NA NE
Page# 3

Permit NCO070289
Owner - Facil[ty Ridgewood Farms Subdivision
Type of bar screen
❑
E
Inspection Date 06/20/2017
Inspection Type. Compliance Evaluation
❑
❑
❑
Pump Station - Influent
Yes No NA NE
Is the pump wet well free of bypass lines or structures?
N
❑
❑
❑
Is the wet well free of excessive grease?
❑
❑
❑
0
Are all pumps present?
N
❑
❑
❑
Are all pumps operable?
E
❑
❑
❑
Are float controls operable?
0
❑
❑
❑
Is SCADA telemetry available and operational?
❑
❑
0
❑
Is audible and visual alarm available and operational?
❑
0
❑
❑
Comment Audible and visual alarms were not operational at time of Inspection It is recommended that
the 110 volt GFI electrical plug be moved to the outside of control cabnet to avoid exposure
to high voltage equipment
Bar Screens
Yes No NA NE
Type of bar screen
❑
E
❑
a Manual
❑
❑
❑
b Mechanical
❑
Is the site free of excessive foaming in the tank?
❑
Are the bars adequately screening debris?
❑ ❑
E
❑
Is the screen free of excessive debris?
❑ ❑
E
❑
Is disposal of screening in compliance?
❑ ❑
0
❑
Is the unit in good condition?
❑ ❑
0
❑
Comment Bar screen had been removed from wastewater treatment
plant. The bar screen is listed on
NPDES permit as part of the treatment equipment It is recommended that a wastewater
screening device be replaced on the treatment unit
Aerobic Digester
Yes No NA NE
Is the capacity adequate?
❑
E
❑
❑
Is the mixing adequate?
❑
❑
0
❑
Is the site free of excessive foaming in the tank?
❑
❑
0
❑
# Is the odor acceptable?
❑
❑
❑
# Is tankage available for properly waste sludge?
❑
E
❑
❑
Comment Aerobic digester appeared to oe undersized Too of bulkhead between digester and aeration
basin had rusted out and bulkhead may collapse if digester is pumped all the way down
Structural repairs are required
Aeration Basins Yes No NA NE
Mode of operation Ext Air
Type of aeration system
Diffused
Page# 4
1�
1

Perrmt NCO070289
Inspection Date. 06/20/2017
Aeration Basins
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?
Is the DO level acceptable9(1 0 to 3 0 mg/I)
Owner - Facility Ridgewood Farms Subdivision
Inspection Type Compliance Evaluation
Yes No NA NE
M ❑ ❑ ❑
❑ ❑ M ❑
M ❑ ❑ ❑
❑ ❑ ■ ❑
■ ❑ ❑ ❑
❑ ❑ N ❑
❑ ❑ N ❑
Comment It is recommended that a MLSS and MLVSS be conducted on mixed liquors
to determin
recommended that hopper walls on the secondary clarifier be gently
raked on a regular
anount of origanics In treatment unit and determin if additional sludge needs to be wasted
basis to dislodge any sludge clinging to walls of secondary clarifier
Mix liquors appeared to have an older sludge age
Pumps -RAS -WAS
Yes No NA NE
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?
❑
❑
N
❑
Are weirs level?
0
❑
❑
❑
Is the site free of weir blockage?
M
❑
❑
❑
Is the site free of evidence of short-circuiting?
0
❑
❑
❑
Is scum removal adequate?
❑
N
❑
❑
Is the site free of excessive floating sludge?
❑
N
❑
❑
Is the drive unit operational?
❑
❑
0
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
❑
0
❑
❑
Is the sludge blanket level acceptable? (Approximately % of the sldewall depth)
❑
❑
M
❑
Comment Bulkino sludge and sludge balls were on surface of secondary clarifer Return sludge lines
were checked for proper operations Only one of two skimmers were in operation It was
recommended that hopper walls on the secondary clarifier be gently
raked on a regular
basis to dislodge any sludge clinging to walls of secondary clarifier
Pumps -RAS -WAS
Yes No NA NE
Are pumps in place?
0 ❑
❑
❑
Are pumps operational?
M ❑
❑
❑
Are there adequate spare parts and supplies on site?
❑ ❑
M
❑
Comment Facility is fitted with air-lift pumps for RAS and WAS
Page# 5

Permit NCO070289 Owner - Facility Ridgewood Farms Subdivision
2
Type of system ?
Tablet
Inspection Date 06/20/2017 Inspection Type, Compliance Evaluation
Is the level of chlorine residual acceptable?
❑
❑
M
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
0
❑
❑
❑
Is sample collected below all treatment units?
0
❑
❑
❑
Is proper volume collected?
M
❑
❑
❑
Is the tubing clean?
M
❑
❑
❑
# 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
representative)?
■ ❑ ❑ ❑
Comment SamDle refrigerator did not have therometer to ensure samples are keit at 6 degrees
Celsius
Disinfection -Tablet Yes No NA NE
Are tablet chlorinators operational? 0 ❑ ❑ ❑
Are the tablets the proper size and type? 0 ❑ ❑ ❑
Number of tubes in use?
2
Type of system ?
Tablet
Is the level of chlorine residual acceptable?
❑
❑
M
❑
Is the contact chamber free of growth, or sludge buildup?
M
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
M
❑
Comment
De -chlorination
Yes No NA NE
Type of system ?
Tablet
Is the feed ratio proportional to chlorine amount (1 to 1)?
❑
❑
M
❑
Is storage appropriate for cylinders?
0
❑
❑
❑
# Is de -chlorination substance stored away from chlorine containers?
M
❑
❑
❑
Are the tablets the proper size and type?
0
❑
❑
❑
Comment De -chlorination is feed at a 2 to 1 ratio
Are tablet de -chlorinators operational? M ❑ ❑ ❑
Number of tubes in use? 4
Comment
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex MLSS, MCRT, Settleable 0 ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Page# 6

Permit NCO070289 Owner - Facility Ridgewood Farms Subdivision
Inspection Date 06/20/2017 Inspection Type Compliance Evaluation
Operations & Maintenance Yes No NA NE
Comment It was noted that treatment facility has corrosion that may be compromising structal
Interoertv of treatment compartments It Is recommended that facility be Inspected and
areas of corrosion repaired Painting of treatment unit would also help
prolong usefull life
Effluent Pipe
Yes No NA NE
Is right of way to the outfall properly maintained?
M
❑
❑
❑
Are the receiving water free of foam other than trace amounts and other debris?
M
❑
❑
❑
If effluent (diffuser pipes are required) are they operating properly?
0
❑
❑
❑
Comment At time of Inspection effluent was clear with few suspended sollds
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and ❑ ❑ M ❑
sampling location)?
Comment Please note that In accordance with permit conditions upstream samples are to be collected
at least 100 feet upstream of outfall and downstream collected at crossing of NCSR 1141 to
Caldwell Creek
Page# 7