NC0040266_NOD-2019-PC-0038_20190204

ROY COOPER
Covernor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
NORTH CAROLINA
Environmental Quality
February 4, 2019
MR. HARVEY MURPHREY— GENERAL PARTNER
KNIGHTDALE ESTATES MHP LP
808 EAGLE ROCK ROAD
WENDELL, NORTH CAROLINA 27591
Subject: NOTICE OF DEFICIENTY
NOD-2019-PC-0038
NPDES Permit No. NCO040266
Knightdale Estates MHP W WTP
Wake County
Dear Mr. Murphrey:
On December 27, 2018, Cory Larsen with 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
subject permit to discharge wastewater. The inspection was performed with the assistance
of plant operators Dale Mathews, Andy Mathews, and yourself — thank you for your
attendance. The following permit violations and deficiencies were noted during the
inspection and require your attention. Also, please reference the attached inspection report
for further details regarding the inspection results.
1. The aeration basin had greater than 75% foam coverage indicating a problem with
the plant's microbiology likely associated with overgrowth of filamentous bacteria.
The clarifier also exhibited signs of poor sludge settling and had excessive scum and
floating solids. The issues are suspected to stem from lack of removal of fats, oils, and
grease (FOG) from the influent stream. Please evaluate options to capture and
remove greasg12rior to inflow to the aeration basin and provide an action plan to the
Division for review and approval.
2. Stream bank erosion is encroaching on the WWTP perimeter fencing and needs to be
addressed. Please provide appropriate reinforcement and -Stabilization of the stream
bank upUadient of the tfall location nearest the ecuri f n corner.
3. The inspection identified a small -diameter black PVC pipe upstream of effluent pipe
of which the source was unknown. PIea a positival-y_identify what the pipe drains r
alternatively remove the i e. If you wi h to limit ground disturbance in the area,the
12ii2e mbe-abandoned in place by filling with concrete orsand/cement lur and
capping.
DE C� North Carolina Department of Environmental Quality I Division of Water Resources
_ Raleigh Regional Office 3600 Barrett Drive I Raleigh, North Carolina 27609
919.791.4200

Please address items 1-3 above and provide written response to this Office no later than
March 31.2019.
You may inform our Office if there are extenuating circumstances that preclude compliance
with the permit's conditions, or if there are any ways that we may be of assistance to help
you bring this system into compliance. Failure to comply with the State's rules and correct
the noted deficiencies by the date above may result in the use of other enforcement
mechanisms available to the State.
If you have any questions regarding this inspection or the requirements to take corrective
action, please contact Cory Larsen at 919-480-9998 / co Ey.1 arse n (zDwakegov.com or me at
[phone].
Sincerely,
✓ ick Bolich, L.G., Assistant Regional Supervisor
Division of Water Resources, Water Quality
Regional Operations Section
Enclosure: EPA Water Compliance Inspection Report
cc: Wake County Department of Environmental Services File
RRO File
Central Files
NPDES Permitting Unit
ec: M&M Water and Wastewater Services fmmwaterservices'civahoo.comj

Untied States Environmental Protection Agency
Approved
EPA Wastr nglan D C 2046a
2040 0057
FA
Water Compliance Inspection Report expires B-31-98
Section A. National Data System Coding (i.e„ PCS)
Transaction Code NPDES yF'morday Inspection Type Inspector Fac Type
1 lu l 2 15 1 3 ! NCO040266 111 121 18r 12; 27 117 18 I ,.1 19 i 1 I 20
L.! 11 i LJ
21 � S
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 CA Reserr id
I
67 I 70LJ 71 I j 72 ti 731 174 751 '1 1 I Is0
Section 8 Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry TimelDate
ermit Effective Date
POTW name and NPDES permit Number)
09 OOAM is/ 12/27
1810101
Knightdale Estates MHP WWTP
Exit Time)Date
Permit Expiration Hate
NCSR 2616 - Hodge Rd
Knightdale NC 27545
10 15AM 10112127
2X02-28
Name(s) of Onsite Representafive(suTides(511Phone and Fax Number(s)
Other Facility Data
X
Dale Lee Mathews'ORC./919-691-1056/
Name, Address of Responsible OfCciallTidelPhone and Fax Number
Betty Murphrey,808 Eagle Rack Rd Wendell NC 27591l1919-366-1814! Contacted
No
Sect. on C Areas Evaluated During Inspection (Check only those areas evaluated)
Permit 0 Flow Measurement i Operations & Maintenance Records/Reports
Sludge Handl ng Disposal 0 Facil ty Site Review Efiluenl/Receiving Waters Other
i
Section D: Summary of FindinglComment5 ;Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(si and Signature :,) of Inspector(s) AgencylOfficelPhone and Fax Numbers Date
Cory Larsen , � _,., P,PC P.C. 919-955-'-443
f
Signature of Manageniant O A Reviewer Agency,'Office,Phone and Fax Numbers p e
i
EPA Form 3560-3 (Reti
3-94) Previous edittens are ob3clete.
P'30 1
F

NPOES yrlmoldaj Inspection Type 1
3 NC0040266 i 1 12 18112,27 17 18 ICI
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
See NOD.
Page#

Permit: NCO040266 Owner -Facility: Knightdale Estates MHP WWTP
Inspection Date: 12127-2010 inspection Type: Compliance Evaluation
Other Yes No NA NE
Comment:
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 M ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit
Yes No NA NE
(If the present permit expires . n 6 months or less). Has the permittee s4bm tted a new
❑
❑
❑
application?
Is the facility as described in the permit?
❑
❑
❑
# Are there any special conditions for the permit?
❑
❑
❑
Is access to the plant site restricted to the general public?
❑
❑
❑
Is the inspector granted access to all areas for inspection?
❑
❑
❑
Comment: Permit was renewed in 2018 and was onsite
Record Keeping
Yes No NA NE
Are records kept and mainta ned as required by the permit?
0
❑
❑
❑
Is all required information really available complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)'�
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
0
❑
❑
❑
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 :,sers and DWO'7
❑
❑
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 24!7 w t-i a cert fed operator
❑
❑
❑
on each shift?
Is the ORC visitation lag available and current?
❑
❑
❑
Page# 3

Permit: NCO040266 Owner -Facility: Knigh:dale Estates MHP VwVTP
Inspection Date: 1212712018 Inspection Type: Comwliance Evaluation
Record Keeping
Yes No NA NE
Is the ORC certified at grade equal to or higher than the faality classification?
N
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
E
❑
❑
❑
Is a copy of the current NPDES permit available on site?
S
❑
❑
❑
Facility has copy of previous year's Annual Report on rile fcr review?
❑
❑
E
❑
Comment: Logbook completed daily with good detail.
Sludge hauling records reviewed - Granville Farms regularly pumps digesters/sludge holding_
tanks.
DMRs reviewed - no violations noted.
Field lab certification was sent after the ins ection via email.
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? E ❑ ❑ ❑
If effluent (diffuser pipes are required) are they operating property? S ❑ ❑ ❑
Comment: Stream bank erosion is encroaching on the WVV7P perimeter fencing and needs to be
stabilized.
No foam at discharge.
Small diameter black pvc pipe upstream of effluent pipe needs source_ identified or pipe
removed or filled with concrete and capped.
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting?
S
❑
❑
❑
Is flow meter calibrated annually?
❑
❑
I
❑
Is the flow meter operational?
E
❑
0
I
❑
(If units are separated) Does the chart recorder match the flow meter?
0
❑
❑
I
❑
Comment: ISCO 3230 Bubbler system flow meter calibrated 4/26/18 by Delta systems.
O 12/26/18 was 24,960 GPD.
Aerobic Digester
Yes No J NE
Is the capacity adequate?
E
❑
I
U
❑
Is the mixing adequate?
❑
❑i
I
❑
Is the site free of excessive foaming in the tank?
N
❑
❑�
❑
# Is the odor acceptable?
■
❑
I
0
❑
# Is tankage available for properly waste sludge?
0
❑
F
El
❑
Comment: One in around digester and two aboveground sludgeholdinp tanks. All aerated.
Granville farms hauls regularly.
Tankage about 213 full.
4

{
Peril: NC0040266
Inspection Date: 12127.4018
Bar Screens
Type of bar screen
a.Manual
b MecPanical
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: Barscreen is cleared to dt
Owner - Facility; Kn ghtdale Estates MHP
Inspection Type: Compliance Evaluation
Equalization Basins
,I
Is the basin aerated?
�I
Is the basin free of bypass lines or structures to the natural environment?
1i
Is the basin free of excessive grease?
Are all pumps present?
Are all pumps operable?
Are float controls operable?
Are audible and visual alarms operable?
# Is basin size/volume adequate?
Comment:
Process si nificantl . Consider feasiblity of EQ basin upstream of plant head.
Secondary Clarifier
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 return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the sludge blanket level acceptable? (Approximately 114 of the sidewall depth)
Yes No NA NE
13
■ ❑ ❑ ❑
■ ❑ ❑ ❑
■ ❑ ❑ ❑
M ❑ ❑ ❑
Yes No NA NE
❑ ❑ M ❑
❑ ❑ ■ ❑
❑ ❑ ■ ❑
❑ ❑ M ❑
❑ ❑ 011
❑ ❑ ■ ❑
❑ ❑ ■ ❑
❑ ❑ M ❑
Yes No NA NE
N
El
El
0
13
0
0
El
El
Page# 5

Permit: NC0040256
Owner - Facility: Kmghtdale Estates MHP 4MMP
Inspection Date: 12127l201e
Inspection Type: Compliance Evaluation
Secondary Clarifier Yes No NA NE
Comment: Sludge blanket 2.4-4.5' in 10' but heavy scurn/cIrease cover during
activated sludge wasting.
Skimmers not functioning due to low water level in clarifier.
Post -aeration was aood.
Aeration Basins
Yes No NA NE
Mode of operation
Ext. Air
Diffused
Type of aeration system
0
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?
0 El
Does the foam cover less than 25% of the basin's surface?
El M
11
Is the DO level acceptable?
13
Is the DO level acceptable?(1.0 to 3.0 mg-1)
Comment; Aeration basin had 314 foam coverage despite pumping off the prior
day it Qu[ckly returns -
Suspect filamentous bacteria growth associated with high FOG in influent_ Need to address
this with pretreatment.
Settleometer 30m = 300 ml/L.
PH = 7.5.
De -chlorination Yes No NA NE
Type of system ? Tablet
Is the feed ratio proportional to chlorine amount (1 to 1)? 0 ❑ ❑ ❑
Is storage appropriate for cylinders? S D ❑
# 1s 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_ Full of correct tablets.
Disinfection -Tablet Yes No NA NE
Are tablet chlorinators operational? ❑ 0 ❑
Are the tablets the proper size and type? M
Number of tubes in use? 2
Page# 6

Permit: NCO040266
Inspection Date: 12f2712018
Disinfection -Tablet
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?
Owner - Facllity: Knightdale Estates MHP 1NWTP
Inspection Type: Compliance Evaluation
Comment: Full of correct tablets.
Some pin floc in CCC, needs to be reciularly cleaned out.
Yes No NA NE
■ ❑ ❑ ❑
■ ❑ ❑ ❑
■ ❑ ❑ ❑
Pagellr 7

r