NC0061638_Compliance Evaluation Inspection_20190117

ROY COOPER
GavtrLnr'
MICHAEL S. REGAN
serrcrary
LINDA CULPEPPER
Interim Director
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NORTH CAROLINA
Environmental Quality
January 17, 2019
MR. MATTHEW KLEIN
CAROLINA WATER SFRVICE OF NORTH CAROLrl.A, INC.
PO Box 240908
CHARLOTTE, NORTH CAROLINA 28224
Subject: Compliance Evaluation Inspection
Permit No. NCO061638
Amherst W WTP
NPDES Wastewater Treatment and Discharge System
Wake County
Dear Mr. Klein:
On December 7, 2018, Cory Larsen of Wake County Department of Environmental Services, on
behalf of the Division of Water Resources, performed a compliance evaluation inspection of the
subject wastewater treatment system to evaluate compliance with the above permit to discharge
wastewater. Jeff Cooke, ORC, was present for the inspection and provided valuable assistance.
The wastewater plant was found to be in good condition and all components functioning as
designed. No compliance issues were found - the WWTP was producing good -quality, clear
effluent. Mr. Cooke should be commended for his excellent plant operation, maintenance and
record keeping.
If you have any questions regarding the results of the inspection or need any assistance in
maintaining compliance with your permit please contact Cory Larsen at 919-480-9998,
cory.larsen(,,'vwakeaov.com or me at 919-791-4200.
Sincerely,
;00�
Rick Bolich, LG, Assistant Supervisor
Water Quality Regional Operations
Raleigh Regional Office
Enclosure: EPA Water Compliance Inspection Report
cc- Wake County Department of Environmental Services File
PRO File
NPDES Permitting Unit
Steve Harrell — Carolina Water Service of North Carolina, INC.
Division of Water Resoorecs, Raleigh Regional Office, Water Quality Operations Seetian hup- portal.nctlennor, wch.wgaps
1628 itilail Service Center, Raleigh, NC 27699-1628 Phone; [phone]
Location: 3.00 Barrett Drive, Raleigh, NC 27609 Fax. [phone]

United Stares Environmental Protect;o- xger_;
Form Approved.
EPA Washington. D.0 20463
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i a PCS)
Transaction Code NPDES yrlmorday Inspection Type Inspector Fac Type
1 IN j 2 15 JI 3I NCO061638 111 121 18)12.67 I17 18 [Sj 19 Lc I 20L
21 6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B 1 OA Reserved
67 70 71 u 72 L �, I 73 I I 1I
74 75I I I I I I I I80
LJ I I I
Section B: Facility Data
Name and Location of Facility Inspected i For Industrial Users d'scharging to POTW also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number:
12 30PM 18112I07
18/05101
Amherst Subdivision WWrP
Exit TimelDate
Permit Expiration Date
4917 Johnston Pond Rd
Apex NC 27539
02:OOPM 18112/07
231M4130
Name(s) of Onsite Representative;W-idesfsllPhone and Fax Number(s)
Other Facility Data
111
Jeffrey J. CookelORC1919-662-70071
Name, Address of Responsible OKcralffide,Phone and Fax Number
Contacted
James T Highley PO Box 240908 Charlotte NC 2822409081Senior Rrgional
Manager1704-525-799017045258174 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit E Flow Measurement Operat:Cns 8 Maintenance Records/Reports
Self -Monitoring Program E Sludge Handling Disposal Facil.ty Site Review EttluentlReceiving Waters
Other
Section D Summary of Finding/Comments (Attach additional sheets of narrat,ve and checklists as necessary)
(See attachment summary)
Name(s) and Signafure(s) of Inspectors) AgencylOtree'Phene and Fax Numbers Date
Cory Larsen q0Sj1A, `Q-- RRO'NOr-919-8v6-7443! 0I/16/20Vf
Signature of Mana em 0 A Reviewer Agency'Offee;Phone and Fax Numbers Qa
�lgl
EPA Form 3560 3(Rev 9-94) Previous editicns are obsolete.
Page#

N?I]E5 yrlmolday Inspect=an Type
3' NC176616J8 11 12 ian2ra7 17 18 u
Section a Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
WOES conducted inspection with Jeff Cooke, ORC on 12I711 S. The plant was in good condition with
all components functioning as designed. No compliance issues were found. Good records and
operation noted.
Page#

Permit: NCOU61638 Owner -Facility: Amherst SubdivisionWWTP
Inspection Date: 12/0712018 Inspection Type: Compliance Evaluation
Other Yes No NA NE
Comment: ORC knows plant and runs it well.
O erations & 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 ❑ ❑ ❑
Solids. pH, DO, Sludge Judge, and other that are applicable?
Comment: Good.
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
❑
application?
Is the faoility as described in the permit?
❑
❑
❑
# Are there any special conditions for the permit?
❑
❑
M
❑
Is access to the plant site restricted to the general public?
0
❑
❑
❑
Is the inspector granted access to all areas for inspection?
■
❑
❑
❑
Comment: 2018 Permit onsite.
Record Keeping
Yes No NA NE
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 cons;stent with data reported on DMRs?
M
❑
❑
❑
Is the chain -of -custody complete?
0
❑
❑
❑
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?
0
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
0
❑
❑
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 2417 w,th a cert.fied operator
❑
❑
M
❑
on each shift?
Is the ORC visitation log available and current?
❑
❑
❑
Page# 3

Owner - Facility: Amherst Subdsv sion'MNT#
Penult: NCoo6153e
Inspection Type: Campllance Evaluation
inspection Gate: 7 2Ia', 2p i B
Yes No NA NE
Record Keeping
Is the ORC certified at grade equal to or higher than the facility class'fcat+on?
M
❑
❑
❑
Is the backup operator certified at one grade less yr greater than the facility classification'
❑
❑
❑
❑
❑
❑
Is a copy of the current NPOES permit ava table on site?
Facility has capy of previous year's Annual Report on file for review?
El
❑
❑
Comment: Excellent detailed record keeoinq includin o erator to book. bench sheets. DNIRs.
No effluent limit violations noted from spot check of 2018 report
n
Yes
No
NA NE
Effluent Pipe
M
❑
❑
❑
Is right of way to the outfall property maintained?
Are the receiving water free of foam other than trace amounts and other debr s"
❑
❑
❑
�
If effluent (diffuser pipes are required) are they ope-at'.r.g property?
❑
❑
❑
Comment. Effluent pioe dischar es to swam (backwaters and was not observed the day
of the
inspection Water level was too high for knee boots). however, the h ht of way
is
maintained..
Flow Measurement - Effluent
Yes No NA NE
M
❑
❑
❑
# Is flow meter used for reporting?
0
❑
❑
❑
is flow meter calibrated annually?
❑
❑
❑
Is the flow meter operational?
,If units are separated) Does the chart recorder match tFe flow meter?
❑
❑
❑
Comment: Stevens mechanical type flow meter operating normal)
Calibrated by Ken Nash - due again on 11130 8.
Average 0 about 20k GPD,
Yes
No NA NE
Aerobic Digester
�
El
El
❑
Is the capacity adequate?
�
El
❑
❑
Is the mixing adequate
El
El
El
Is the site free of excessive foaming in the tank?
9
❑
❑
❑
# Is the odor acceptable?
❑
❑
❑
# Is tankage available for properly waste sludge'?
Comment: Good condition. Granville Farms hauls sludge,,
pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? 00011
Is the wet well free of excessive grease? d ❑ ❑ ❑
Page# 4

Permit: NCO061638
Owner • Facility! Amherst Subdivision VWVrP
Inspection Date: 1210712018
Inspection Type; Compliance Evaluation
Pump Station - Influent
Yes No NA NE
Are all pumps present?
N❑
❑
❑
Are all pumps operable?
0❑
❑
❑
Are float controls operable?
0❑
❑
❑
Is SCADA telemetry available and operational?
0❑
Cl
❑
Is audible and visual alarm available and operational?
0
❑
❑
❑
Comment: All components tested normaliv.
Envirolink pumped out solids_lasw week.
Operator checks weekly.
Bar Screens
Yes No NA NE
Type of bar screen
a.Manual
b. Mechan,cal
❑
Are the bars adequately screening debris?
❑
❑
❑
Is the screen free of excessive debris?
❑
❑
❑
Is disposal of screening in compliance?
M
❑
❑
❑
Is the unit in good conditiwn?
0
❑
❑
❑
Comment: New stainless steel coarse bar screen in place.
gualization Basins
Yes No NA NE
Is the basin aerated?
M❑
❑
❑
Is the basin free of bypass lines or structures to the natural environment?
❑
❑
❑
Is the basin free of excessive grease?
❑
❑
❑
Are all pumps present?
❑
❑
❑
Are all pumps operable?
❑
❑
❑
Are Float controls operable?
0❑
❑
❑
Are audible and visual alarms operable?
0
❑
❑
❑
# Is basin size/volume adequate?
0❑
❑
❑
Comment: EQ basin is aerated with little solids. Both pumps functioned.
Splitter box separates to plant 1 and plant 2.
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?
❑
❑ M
❑
Are weirs level?
N
❑ ❑
❑
Page#
5

Permit: NCO061638 Owner -Facility,
A,'T rSt 5ubdidision NNTP
Inspection beta: 1210712018 Inspection Type
CorrrrsanceEvaluation
Secondary Clarifier
Yes No NA NE
1s the site free of weir blockage?
Is the site free of evidence of short-circuiting?
El M
Is scum removal adequate?
11 ❑
Is the site free of excessive floating sludge?
0 El D El
Is the drive unit operational?
El El
Is the return rate acceptable (low turbulence)?
1s the overflow clear of excessive solidslpin floc?
0
Is the sludge blanket level acceptable? (Approximately V,, of the s.dewali depth;
❑
Comment. Clarifier 1 - mostiv clear effluent. skimmers working ok. onl
ooerate with blower air on.
Sludge blanket depth 2.5 ft deep_
Clarifier 2 - some minor floating sludge skimmer removing it. flow over weir clear. sludge
de th 2.5 ft.
Aeration Basins
Yes No NA NE
Ext. Air
Mode of operation
Type of aeration system
Diffused
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 7
El 0 El
Does the foam cover less than 25% of the bas n s st,rfa-e'?
10
Is the 00 level acceptable?
El El
Is the DO level acceptable?(1.0 to 3 0 mgrl;
Comment: AB blowers run on timer set to 15m on 145m off.
30m settleameter = 350 mllL.
Dark brown color. no foam. Color darkens tsioically with sludge age.
Filtration (High Rate Tertia
Yes No NA NE
Dawn flow
Type of operation
i ❑ 110
Is the filter media present)
0
Is the filter surface free of clogging?
m
Is the filter free of growth?
■
Is the air scour operational?
t Ei❑
Is the scouring acceptable?
Is the clear well free of excessive solids and filter medial
R
Page# E.

Permit NCoo81858 Owner - Facility: Amherst Subdw sion wWTP
Inspection Date: 12107d018 Inspection Type: Compliance Evaluation
Filtration (High Rate Tertiary) Yes No NA NE
Comment: Sand filter dosed by two Dumps_
Backwashed both filters manually. Backwash overflow to surge tank
De -chlorination Yes No NA NE
Type of system ? Tablet
Is the feed ratio proportional to chlorine amount (4 to 1)? M ❑ ❑ ❑
Is storage appropriate for cylinders? M ❑ ❑ ❑
# Is de -chlorination substance stored away from chlorine containers' ❑ ❑ ❑
Comment:
Are the tablets the proper size and type? M❑ ❑ ❑
Are tablet de -chlorinators operational? 0❑ ❑ ❑
Number of tubes in use? 2
Comment: 2 tunes full of tablets_
Standby Power
Yes No NA NE
Is automatically activated standby power available?
❑
❑
❑
Is the generator tested by interrupting primary power source?
S
❑
❑
❑
Is the generator tested under load?
M
❑
❑
❑
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: Generator manually tested,_ Exercises weekly on Tuesday_
Disinfection -Tablet
Yes No NA NE
Are tablet chlorinators operational?
❑
❑
❑
Are the tablets the proper size and type?
❑
❑
❑
Number of tubes in use?
2
Is the level of chlorine residual acceptable?
M
❑
❑
❑
Is the contact chamber free of growth, or sludge buildup?
0
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
■
❑
❑
❑
Comment: two tunes full of tablets
Page# 7

Owner - Facility: Amherst Subdivision MVTP
Permit: NCt7061638
inspection Type: Compliance Evaluation
Inspection Date: 1207+201 B
Yes
No NA NE
Effluent Sampling
M
❑
❑
❑
is composite sampling Flow proportional?
0
❑
❑
❑
Is sample collected below all treatment units?
❑
❑
❑
■
Is proper volume collected?
■
❑
❑
❑
Is the tubing clean?
th r e -al to 6 d degrees s
❑
❑
❑
# Is proper temperature set for sample storage (kept at less an a q
Celsius)?
Is the facility sampling performed as required by the permit (frequency sampling type
representative)?
Comment:
Upstream ! Downstream Sampling
1s the facility sampling performed as required by the permit (frequency sampling type and
sampling location)?
Comment: US DO = 9.4 m IL
Q.SQO=8.6m /L
Effluent Q0= 10.2._W =7.7
sampling at proper locations.
® ❑ ❑ ❑
Yes No NA NE
M ❑ ❑ ❑
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