NC0026654_Inspection_20171122

EPA
United States Environmental Protection Agency
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 Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 N 52 NC0026654 17/11/14 C S31112171819 20
21 66
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved-------------------
N67707172 73 74 75 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Crossnore WWTP
U.S. Highway 221
Crossnore NC 28616
Entry Time/Date Permit Effective Date
Exit Time/Date Permit Expiration Date
10:00AM 17/11/14 15/04/01
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Jadd Wesley Brewer/ORC/828-898-6277/
Other Facility Data
10:20AM 17/11/14 20/01/31
Name, Address of Responsible Official/Title/Phone and Fax Number
Edward T Vance,PO Box 129 Crossnore NC 286160129//828-733-0360/8287336393 Contacted
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Operations & Maintenance Facility Site Review
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
Daniel J Boss ARO WQ//828-296-4658/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
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DocuSign Envelope ID: 15D56055-D32F-4B87-8898-604072FA6A0E
11/22/2017
11/22/2017
NPDES yr/mo/day
17/11/14
Inspection Type
C3111218
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
On 11/14/2017 Daniel Boss conducted a follow up inspection at the Crossnore WWTP. The follow up
was in response to a bypass of about 1200 gallons that occurred from the UV disinfection channel on
10/09/2017. I met with Jadd Brewer and Steve Taylor at the plant. Jadd explained that the reason for
the bypass of the UV disinfection system was very high plant flow due to I&I from a strong rain and
probably a blockage in the discharge line from the UV channel. Jadd said that subsequent rainfall of
similar magnitude has not resulted in additional bypass events, which is why he suspects a discharge
line restriction must have occurred on the day of the bypass event. The UV channel sits at a lower
elevation than the aeration system and clarifier, and the pressure from that drop could cause the
channel to spill over with enough influent flow to the channel. The influent and effluent pipes from the
UV channel are the same diameter and they are wide enough that I believe an obstruction to the
effluent line was probably a factor causing the bypass.
NC0026654 17 (Cont.)
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DocuSign Envelope ID: 15D56055-D32F-4B87-8898-604072FA6A0E
Permit:NC0026654
Inspection Date:11/14/2017
Owner - Facility:
Inspection Type:
Crossnore WWTP
Compliance Evaluation
Operations & 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:
Aeration Basins Yes No NA NE
Mode of operation Ext. Air
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?
Does the foam cover less than 25% of the basin’s surface?
Is the DO level acceptable?
Is the DO level acceptable?(1.0 to 3.0 mg/l)
Comment:
Disinfection - UV Yes No NA NE
Are extra UV bulbs available on site?
Are UV bulbs clean?
Is UV intensity adequate?
Is transmittance at or above designed level?
Is there a backup system on site?
Is effluent clear and free of solids?
UV channel had a bypass on October 9, 2017, but Jadd says since that time, similar flows
have not resulted in additional bypass events.
Comment:
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DocuSign Envelope ID: 15D56055-D32F-4B87-8898-604072FA6A0E