NC0060623_Compliance Evaluation Inspection_20210518 (2)

United States Environmental Protection Agency
E PA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction
1 IN I
21IIIIII
Code NPDES yr/mo/day Inspection
2 IL I 3 I NC0060623 111 121 21/05/12 117
Type
1810I
IIIIIIIIIII
Inspector Fac Type
19I S I 2011
IIIIIIIIIIIIIIIIII I IIIIII
P6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
671 I 70I I 711 172 I N I 73I 1 74 71
I I
I I I I I I 180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES Dermit Number)
Stone Highway Mobile Home Park
311 Pinewood PI
Eden NC 27288
Entry Time/Date
05:35PM 21/05/12
Permit Effective Date
17/06/01
Exit Time/Date
06:25PM 21/05/12
Permit Expiration Date
22/04/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
William H Young/ORC/336-627-1009/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Sterling A Weaver,149 Sunset Blvd Beaufort SC 29902//843-522-8882/8435228882
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
Self -Monitoring Progran Sludge Handling DispoFacility Site Review Effluent/Receiving Wate
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
Alex Lowe DWR/WSRO WQ/336-776-9689/
Signature of
Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
DocuSigned by:
3eAuuten, �ti niLK 5/18/2021
0D2D3CE3F1B7456_.
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
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31
NPDES yr/mo/day
NC0060623 111 121 21/05/12
117
Inspection Type
18 [j
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
On May 12th, 2021, Alex Lowe of the WSRO conducted a routine Compliance Evaluation Inspection
at Stone Highway Mobile Home Park WWTP (NPDES permit no. NC0060623). ORC William "Hal"
Young was present throughout.
The plant area was well cared for, with clean, trimmed grounds around the basins. Within the
treatment train, there were signs of aging and corrosion on some of the exposed metals. Lowe noted
one corroded beam connected to the bar screen and suggested to Young that he monitor corrosion
and begin repairs if signs of weakening occur.
The aeration basin was operating well, with no visible dead spots, and no excessive or discolored
foaming.
The clarifier was free from bad odors and appeared to be keeping most solids out of the disinfection
stream. ORC Young did note that he has had some issues since mid -spring 2021 with small bits of
sheared grease, which float on the surface of the clarifiers and occasionally make it into the overflow.
However, he works to manually remove these bits of solids with a home-made tool when he is on site,
and secures the filter below the clarifier outfall when he is gone to catch any extra pieces that may
make it below. During the visit, Lowe did not observe any of these pieces in the effluent stream or
below the outfall.
The effluent outfall was easily accessible, and very little foaming was observed in the receiving
waters. Effluent was clear, and free from solids and floc.
A review of three months of DMR data found one discrepancy, with a misreported TSS number on the
14th of January, 2021. This discrepancy appeared to be an honest mistake, as the reported number
was not the lab result, but the lab reporting limit, which is listed directly beside the lab result on the
Meritech, Inc. analysis sheet. Lowe advised ORC Young to revise and resubmit the DMR in question,
and the mistake was remedied immediately.
ORC demonstrated good engagement with treatment difficulties and site maintenance, and effluent
continues to be compliant with permit requirements.
Page# 2

Permit: NC0060623
Inspection Date: 05/12/2021
Owner - Facility: Stone Highway Mobile Home Park
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 El El • ❑
application?
Is the facility as described in the permit? • El El El
# Are there any special conditions for the permit? El • El El
Is access to the plant site restricted to the general public? • ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? • El El El
Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? • El El El
Is all required information readily available, complete and current? • El ❑ ❑
Are all records maintained for 3 years (lab. reg. required 5 years)? • El El El
Are analytical results consistent with data reported on DMRs? • El El El
Is the chain -of -custody complete? • El El El
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? • El ❑ ❑
Has the facility submitted its annual compliance report to users and DWQ? El El • El
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified ❑ El • ❑
operator on each shift?
Is the ORC visitation log available and current? • El El El
Is the ORC certified at grade equal to or higher than the facility classification? • El ❑ ❑
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? ❑ ❑ • ❑
Comment:
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Yes No NA NE
Page# 3

Permit: NC0060623
Inspection Date: 05/12/2021
Owner - Facility: Stone Highway Mobile Home Park
Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ El El
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: DO, temperature, and Settleable Solids collected and used in process control
Bar Screens Yes No NA NE
Type of bar screen
a.Manual •
b.Mechanical ❑
Are the bars adequately screening debris? • El El El
Is the screen free of excessive debris? • ❑ ❑ ❑
Is disposal of screening in compliance? • El El El
Is the unit in good condition? • El El El
Comment: Beams holding bar screen showing some signs of rust and corrosion. Lowe pointed this
out to ORC Young as something to check on periodically.
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
Type of aeration system Diffused
Is the basin free of dead spots? • El El El
Are surface aerators and mixers operational? ❑ ❑ • El
Are the diffusers operational? • El El El
Is the foam the proper color for the treatment process? • ❑ El El
Does the foam cover less than 25% of the basin's surface? • El El El
Is the DO level acceptable? El El El •
Is the DO level acceptable?(1.0 to 3.0 mg/I) El El El •
Comment: Basin wasted 3-4 times per week.
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?
Yes No NA NE
• ❑ ❑ ❑
Page# 4

Permit: NC0060623
Inspection Date: 05/12/2021
Owner - Facility: Stone Highway Mobile Home Park
Inspection Type: Compliance Evaluation
Secondary Clarifier Yes No NA NE
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'/4 of the sidewall depth)
• ❑ ❑ ❑
▪ ❑ ❑ ❑
Comment: ORC Young noted a problem he is having with small, coagulated balls of grease
(approx. pea sized or smaller) making it over the weirs, as they float at surface level
and make it into the overflow. Young stated that he manually removes as many as
possible during his site visit, and he has devised a post -clarifier filter out of a stainless
steel colander, which sits just after the clarifier and collects the rest. None of these
grease pieces were observed in the effluent stream during the course of the visit.
Disinfection -Tablet Yes No NA NE
Are tablet chlorinators operational? • ❑ ❑ ❑
Are the tablets the proper size and type? • ❑ El El
Number of tubes in use? 2
Is the level of chlorine residual acceptable? • El ❑ ❑
Is the contact chamber free of growth, or sludge buildup? • ❑ El El
Is there chlorine residual prior to de -chlorination? • ❑ ❑ ❑
Comment: Two tues in use, with two others maintained and availabe for use in case of increased
disinfection needs.
De -chlorination Yes No NA NE
Type of system ? Tablet
Is the feed ratio proportional to chlorine amount (1 to 1)? • ❑ ❑ ❑
Is storage appropriate for cylinders? El El • El
# Is de -chlorination substance stored away from chlorine containers? • El El El
Are the tablets the proper size and type? • El El El
Comment: Sodium metabisulfite tablets
Are tablet de -chlorinators operational? • El El El
Number of tubes in use? 4
Comment:
Effluent Pipe
Is right of way to the outfall properly maintained?
•
Yes No NA NE
❑ ❑ ❑
Page# 5

Permit: NC0060623
Inspection Date: 05/12/2021
Owner - Facility: Stone Highway Mobile Home Park
Inspection Type: Compliance Evaluation
Effluent Pipe
Are the receiving water free of foam other than trace amounts and other debris?
If effluent (diffuser pipes are required) are they operating properly?
Yes No NA NE
• ❑ ❑ ❑
Comment: Some trace foamign directly below outfall, but no foam persisted more than 10-15 ft
downstream.
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? ❑ ❑ ■ ❑
Is sample collected below all treatment units? • ❑ ❑ ❑
Is proper volume collected? • ❑ ❑ ❑
Is the tubing clean? ❑ ❑ • ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 ❑ ❑ ■ ❑
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type ■ ❑ ❑ ❑
representative)?
Comment:
Upstream / Downstream Sampling
Is the facility sampling performed as required by the permit (frequency, sampling type,
and sampling location)?
Comment: Taken once weekly, per permit requirements.
Yes No NA NE
Page# 6