WQ0036766_Compliance Evaluation Inspection_20180906

DocuSign Envelope ID: 82952D83-3AF8-429A-8A27-2690D16E82B8
F,OY COOPER NORTH CAR411-11NA
Governo? Environmental Quality
N11CI EL S_ RE AON
Sacrar¢n
LLD . CULPEPPER
:ntsruoe Dirsclor
November 13, 2018
Mr. Michael J. Myers
Old North State Water Company LLC
4700 Homewood Ct
Suite 108
Raleigh, NC 27609
Subject: Compliance Inspection Report
Cedar Point WWTP
Non -Discharge Permit No. WQ00367662
Carteret County
Dear Mr. Myers:
A compliance inspection of the Cedar Island Wastewater Treatment Facility was conducted by Tom Tharrington
from this office on September 6, 2018. This inspection was to verify that the facility is operating in compliance
with the conditions and limitations specified in Non -Discharge Permit No. WQ0036766. The findings and
comments noted during this inspection are provided in the enclosed copy of the "Water Compliance Inspection
Report". There were no significant issues or findings noted during this inspection, thus a response to this
inspection report is not required.
If you have any questions concerning this report, you may contact the inspector at the letterhead contact or via
email at [e-mail] .
Sincerely,
DocuSigned by:
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E3ABA14AC7DC434...
Dr. Morella Sanchez -King PE, Acting Regional Supervisor
Water Quality Regional Operations Section
Wilmington Regional Office
Division of Water Resources, NCDEQ
Enclosure
Cc: Wilmington Regional Office Files WQ0036766-Laserfiche
Central Files, Water Quality Section
State ofNorth Carolina I Department of Environmental Quality I Division of Water Resources
127 Cardinal Drive Ext., Wilmington, NC 28405
919 796 7215

Compliance Inspection Report
Permit: WQ0036766 Effective: 09/26/14 Expiration: 02/28/19 owner: Old North State Water Company LLC
SOC: Effective: Expiration: Facility: Cedar Point WWTP
County: Carteret Cedar Point Blvd
Region: Wilmington
Cedar Point NC 28584
Contact Person: Michael J Myers Title: Phone: [phone]
Directions to Facility:
System Classifications: WW3,
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 09/06/2018 EntryTime: 10:15AM
Primary Inspector: Tom Tharrington
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: High Rate Infiltration
Facility Status: Compliant Not Compliant
Question Areas:
Certification:
Phone:
Exit Time: 11:10AM
Phone:
Inspection Type: Compliance Evaluation
Treatment Flow Measurement -Effluent Treatment Flow Measurement -Influent
Treatment Flow Measurement -Water Treatment
Use Records
Treatment Filters Treatment Activated Sludge
Treatment Influent Pump Station Treatment Clarifiers
End Use -Infiltration Treatment Flow Measurement
Standby Power
(See attachment summary)
Miscellaneous Questions
Treatment Barscreen
Treatment Sludge Storage/Treatment
Treatment Disinfection
Treatment Return pumps
Page: 1

Permit: WQ0036766 Owner - Facility: Old North State Water Company LLC
Inspection Date: 09/06/2018 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Routine compliance inspection and scheduled visit with the permit writer. clean, well -run facility with some operational
issued experienced during start-up but no recent compliance issues. This is a below -grade, MBBR type system with the
ability to feed supplemental carbon for BNR enhancement. Influent wastewater enters the system at the septic/solids
storage tank where solids can accumulate for removal, wastewater is transferred by an intermediate pump station to the
equalization chamber. From the equalization chamber the influent moves through the pre -anoxic chamber, the aerobic
MBBR and then to the post -anoxic chamber. Wastewater and mixed liquor within the system can be recycled to improve
nitrate removal rates as it passes through the pre -anoxic chamber. Instrumentation including in -line ORP probes provide
feedback for operational changes and supplemental carbon addition. Effluent moves from the secondary clarifier chamber,
through filter cartridges into UV disinfection and is then dosed to one of two infiltration basins.
A review of 12 month calculated average NDMR data back to September 2016 indicates no significant compliance issues,
there are 3 monthly exceedances of Total Nitrogen related to poor BNR performance.
Page: 2

Permit: WQ0036766
Inspection Date: 09/06/2018
Owner - Facility: Old North State Water Company LLC
Inspection Type : Compliance Evaluation Reason for Visit: Routine
Type
Yes No NA NE
Reuse (Quality)
❑
Lagoon Spray, LR
❑
Single Family Spray, LR
❑
Activated Sludge Spray, LR
❑
Single Family Drip
❑
Activated Sludge Spray, HR
❑
Activated Sludge Drip, LR
❑
Recycle/Reuse
❑
Infiltration System
Treatment Yes No NA NE
Are Treatment facilities consistent with those outlined in the current permit? 0 ❑ ❑ ❑
Do all treatment units appear to be operational? (if no, note below.) 0 ❑ ❑ ❑
Comment: This site use a dual train activated sludae system with loose media within the are -anoxic. oxic
and post -anoxic chambers typical of any IFAS (Integrated fixed -film activated sludge) or MBBR
(moving bed biofilm reactor) system. The media present within the bio-chambers enable the
system to achieve an increase in biomass without having to manage dense mixed liquor levels
or deal with problems associated with older sludge ages. Typically, nutrient conversion and
removal rates are very efficient with these systems. This system experienced operational issues
during the start-up phase due to low hydraulic and organic loading rates as it serves only one
large commercial building with medical and offices spaces. The ORC has been able to optimize
operations by increasing supplemental carbon feeds into both the anoxic chambers to enhance
denitrification rates and into the aeration chamber (reactor) to increase system biomass and to
date, this systems' operational reliability has improved.
Treatment Influent Pump Station
Yes No NA NE
Is the pump station free of bypass lines or structures?
0
❑ ❑ ❑
Is the general housekeeping acceptable?
❑ ❑ ❑
Are all pumps present?
❑ ❑ ❑
Are all pumps operable?
❑ ❑ ❑
Are floats/controls operable?
❑ ❑ ❑
Are audio and visual alarms available?
❑ ❑ ❑
Are audio and visual alarms operational?
❑ ❑ ❑
# Are SCADA/Telemetry alarms required?
❑ ❑ ❑
Are SCADA/Telemetry available?
❑ ❑ ❑
Are SCADA/Telemetry operational?
0
❑ ❑ ❑
Comment: The high level alarm was tested during the inspection and
the audible and visual alrms
functioned as designed. The auto -dialer also functioned
properly and called the ORC's mobile
phone.
Page: 3

Permit: WQ0036766 Owner - Facility: Old North State Water Company LLC
Inspection Date: 09/06/2018 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Treatment Flow Measurement -Influent Yes No NA NE
Is flowmeter calibrated annually? ❑ ❑ 0 ❑
Is flowmeter operating properly? ❑ ❑ 0 ❑
Does flowmeter monitor continuously? ❑ ❑ 0 ❑
Does flowmeter record flow? ❑ ❑ 0 ❑
Does flowmeter appear to monitor accurately? ❑ ❑ 0 ❑
Comment: No comment
Treatment Flow Measurement -Water Use Records Yes No NA NE
Is water use metered? ❑ ❑ 0 ❑
Are the daily average values properly calculated? ❑ ❑ 0 ❑
Comment: No comment
Treatment Flow Measurement -Effluent
Yes No NA NE
Is flowmeter calibrated annually?
0
❑ ❑ ❑
Is flowmeter operating properly?
0
❑ ❑ ❑
Does flowmeter monitor continuously?
0
❑ ❑ ❑
Does flowmeter record flow?
0
❑ ❑ ❑
Does flowmeter appear to monitor accurately?
0
❑ ❑ ❑
Comment: The ORC monitors flow to both infiltration basins via two Siemens flowmeters, one for each
basin. Flow rates are recorded on a reading sheet and combined to calculate effluent volumes.
Flow rates are typically 4,000 to 6,500 gallons per day when the building is occupied.
Standby Power Yes No NA NE
Is automatically activated standby power available? ❑ ❑ ❑
Is generator tested weekly by interrupting primary power source? ❑ ❑ ❑
Is generator operable? ❑ ❑ ❑
Does generator have adequate fuel? 0 ❑ ❑ ❑
Comment: No comment
Treatment Barscreen
Yes No NA NE
Is it free of excessive debris?
❑
❑ ❑
Is disposal of screenings in compliance?
❑
❑ ❑
Are the bars spaced properly?
❑
❑ ❑
Is the unit in good condition?
❑
❑ ❑
Comment: No comment
Treatment Activated Sludge Yes No NA NE
Is the aeration mechanism operable? ❑ ❑ ❑
Is the aeration basin thoroughly mixed? ❑ ❑ ❑
Page: 4

Permit: WQ0036766 Owner - Facility: Old North State Water Company LLC
Inspection Date: 09/06/2018 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Is the aeration equipment easily accessed? ❑ ❑ ❑
Is Dissolved Oxygen adequate? ❑ ❑ ❑
Are Settleometer results acceptable? ❑ ❑ ❑
Is activated sludge an acceptable color? ❑ ❑ 0 ❑
Comment: This treatment process uses a MBBR process for efficiency in both BOD and nutrient removal
rates. The anoxic and oxic chambers are visible only through a series of manholes as the
chambers are below grade. Supplemental carbon (MlcroC®) is added as needed bV chemical
feed pump to augment BOD levels to improve biomass growth and to enhance denitrification
rates. Liquid alum is also added to co -precipitate phosphorous within the biomass.
Treatment Clarifiers
Yes No NA NE
Are the weirs level?
❑
❑ ❑
Are the weirs free of solids and algae?
❑
❑ ❑
Is the scum removal system operational?
❑
❑ ❑
Is the scum removal system accessible?
❑
❑ ❑
Is the sludge blanket at an acceptable level?
❑
❑ ❑
Is the effluent from the clarifier free of excessive solids?
❑
❑ 0 ❑
Comment: The clarifier chamber is a cylindrical tank set below grade, filters similar to septic
tank effluent
filters provide additional treatment prior to the UV system.
Treatment Return pumps
Yes No NA NE
Are they in place?
❑ ❑ ❑
Are they operational?
❑ ❑ ❑
Comment: No comment
Treatment Filters
Is the filter media present?
Is the filter media the correct size and type?
Is the air scour operational?
Is the scouring acceptable?
Is the clear well free of excessive solids?
Is the mud well free of excessive solids and filter media?
Does backwashing frequency appear adequate?
Comment: Cartridge type effluent filters are used to improve clarifier effluent quality. These filters are
manually removed and washed when needed.
Treatment Sludge Storage/Treatment
Is the aeration operational?
Is the aeration pattern even?
If required, are Sanitary "Ts" present in tankage?
Yes No NA NE
❑❑■❑
■❑❑❑
❑❑■❑
❑❑■❑
Yes No NA NE
❑❑■❑
■❑❑❑
Page: 5

Permit: WQ0036766 Owner - Facility: Old North State Water Company LLC
Inspection Date: 09/06/2018 Inspection Type : Compliance Evaluation
Reason for Visit: Routine
Comment: Wasted sludge is stored in the primary clarifier (septic tank/solids storage)
prior to the treatment
process.
Treatment Disinfection
Yes No NA NE
Is the system working?
0
❑ ❑ ❑
Do the fecal coliform results indicate proper disinfection?
❑ ❑ ❑
Is there adequate detention time (-30 minutes)?
❑
❑ ❑
Is the system properly maintained?
❑ ❑ ❑
If gas, does the cylinder storage appear safe?
❑
❑ ❑
Is the fan in the chlorine feed room and storage area operable?
❑
❑ ❑
Is the chlorinator accessible?
❑
❑ ❑
If tablets, are tablets present?
❑
❑ 0 ❑
Are the tablets the proper size and type?
❑
❑ ❑
Is contact chamber free of sludge, solids, and growth?
❑ ❑ ❑
If UV, are extra UV bulbs available?
❑ ❑ ❑
If UV, is the UV intensity adequate?
❑ ❑ ❑
# Is it a dual feed system?
❑
❑ ❑
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? (1 000)
If yes, then when was the RMP last updated?
Comment: A four -bank UV disinfection system is used at this facilit
End Use -Infiltration
Yes No NA NE
# Is the application High Rate or Low Rate?
Are buffers maintained?
❑
❑ ❑ ❑
Are any supply wells within the CB?
❑
❑ ❑ ❑
Are any supply wells within 250' of the CB?
❑
❑ ❑ ❑
Is municipal water available in the area?
❑
❑ ❑ ❑
Are GW monitoring wells required?
❑
❑ ❑ ❑
Are GW monitoring wells located properly w/ respect to RIB and CB?
❑
❑ ❑ ❑
Are GW monitoring wells properly constructed, including screened interval?
❑
❑ ❑ ❑
Is a usable green area maintained?
❑
❑ ❑ ❑
Is the disposal site acceptable?
❑
❑ ❑ ❑
Is the distribution equipment acceptable?
❑
❑ ❑ ❑
Is the disposal site free of ponding?
❑
❑ ❑ ❑
Is the disposal site free of breakout?
❑
❑ ❑ ❑
Are the disposal sites free of solids, algae, etc.?
❑
❑ ❑ ❑
Page: 6

Permit: WQ0036766 Owner - Facility: Old North State Water Company LLC
Inspection Date: 09/06/2018 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Do the records show that the fields are properly maintained?
Are the disposal sites free of vegetation?
Do any surface water features appear to be adversely impacted by GW discharge?
No chemicals or rototiller used to eliminate vegetation, solids, algae, etc.?
Comment:
Page: 7