WQ0023896_Compliance Evaluation Inspection_20200325

ROY COOPER
Gmernor
MICHAEL S. REGAN
Secr-erary
S. DANIEL SMITH
Dircrtor
NORTH CA—�OLINA
Environmental Quality
March 25, 2020
Larry Daw
Environmental Compliance Officer
The University of North Carolina at Chapel Hill
Department of Environment, Health and Safety
1120 Estes Drive Extension
Campus Box 1650
Chapel Hill, NC 27599-1650
Subject: Permit Renewal for WQ0023896
Bingham Facility
UNC Chapel Hill
Orange County
Dear Mr. Daw,
Staff of the NC Division of Water Resources (DWR), Water Quality Regional Operations Section
inspected the subject wastewater irrigation system on March 23, 2020. We wish to thank Larry Daw, Jamie
Smith (ORC) and Clay Teague (backup ORC) who assisted with the inspection. The purpose of the visit
was to inspect the facility prior to renewing the permit.
The ORC and backup ORC are employed full time to operate this system.
The componants of the drinking water treatment system were found to be present and in working
order. Water softener backwash is pumped to the lift station that pumps treated wastewater to the storage
pond. Backwash from the manganese filter system is hauled away.
The septic tank sludge level and all floats and alarms are tested monthly and are in working order.
The septic tank effluent filter was cleaned monthly, but it is difficult to clean. Staff bought a second one
and now they are switched out monthly. The filter is easy to clean after it has dried. The septic tank has
not needed to be pumped out yet.
The pumps, alarms, nozzles and general condition of the advantex units were found to be in good
order. The 60 degree flume, flow meter and chlorine pump system were all found to be in good working
order. The pump station was found to have clear water, a mild chlorine odor and pumps and alarms were
in working order.
The 5 day wet weather pond has never been used. The berm is in good condition. Freeboard was
8.5 feet. Rain water is periodically pumped out.
North Cirolini Dept;riment of Environmental Quatity Division oi'Witer Resourtes
e�:�D��/f t Raleigh Regional Office 17800 Barro Utive Paleigh, Nor th Carolina 21609
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n.asu..na rwnw.�naa 9I".7914200

The 1.12 million gallon storage pond was also in good condition. Freeboard was at 6.0 feet. Algae
was frequently clogging the filter but has been controlled with a colorant and with a copper based algaecide.
Before the irrigation pump starts each time, compressed air clears the filter in the pond. The dripfields are
irrigated manually for 45 to 55 minutes per zone and flow rates are observed and recorded during irrigation.
A change in flow rate indicates a line break or a stuck solenoid etc. Twice a year, dripfield lines are flushed
of accumulated growth. Clogging of the drip emitters has not been a problem. The system operates at
about 40 to 60 psi.
Driptields were not operated during the inspection due to rain, but staff report that everything is in
good order. Repairs to driplines is needed frequently due to damage by squirrels and deer, etc. Three fields
are in trees and one is in grass. Staff reported that the dripf elds in the woods are easier to maintain and
repair.
The monitoring wells are in good condition. The upgradient well and side gradient wells have had
periodic low level fecal coliform bacteria for years. It is very unlikely that this contamination is due to the
irrigation.
NDMR and NDAR reports are being submitted complete and on time. Wastewater constituents
and flow rates are well within permit limits.
The previously used treatment unit has been removed.
On the day of the inspection, the permit appeared to be well run and operating within permit conditions.
Please refer to the attached inspection report.
If you have any questions or would like technical assistance, please contact me via email at
[e-mail] or at (919) 7914240.
Sincerely,
L�
ilosh
Environmental Specialist
[e-mail]
Attachment
cc: RRO-WQROS Files
DWR Central Files

Permit: W00023896
SOC:
County: Orange
Region: Raleigh
Contact Person: Lary Daw
Compliance Insi3ection Report
Effective: 10/01/15 Expiration: 09/30120 Owner: The University of North Carolina at Chapel Hill
Effective: Expiration: Facility: UNC-CH Bingham Facility
1907 Clover Garden Church Rd
Title:
Chapel Hill NC 27516
Phone: [phone]
Directions to Facility:
Take 140 west to chapel hill, take Hwy 54West to carborro. Continue on 54 west past White Cross. Turn left on Morrow Mill go
about a mile and veer left on Clover garden church road. Gate to facility is on left about 2 miles down.
System Classifications: SI,
Primary ORC: James Edward Smith Certification: 985237 Phone: [phone]
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 03/23/2020 Entry Time 11 00AM Exit Time: 12 30PM
Primary Inspector: Raymond M Mdosh Phone: [phone]
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Wastewater Irrigation
Facility Status: 0 Compliant ❑ Not Compliant
Question Areas:
Miscellaneous Questions Treatment Record Keeping
Treatment Lagoons End Use -Irrigation Treatment Disinfection
Storage Wells
(See attachment summary)
Page 1 of 5

permit: W00023896 Owner - Facility: The University of North Carolina at Chapel Will
Inspection Date: 03/23/2020 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Staff of the NC Division of Water Resources (DWR), Water Quality Regional Operations Section inspected the subject
wastewater irrigation system on March 23, 2020. We wish to thank Larry Daw, Jamie Smith (ORC) and Clay Teague
(backup ORC) who assisted with the inspection. The purpose of the visit was to inspect the facility prior to renewing the
permit.
The ORC and backup ORC are employed full time to operate this system.
The componants of the drinking water treatment system were found to be present and in working order. Water softener
backwash is pumped to the lift station that pumps treated wastewater to the storage pond. Backwash from the manganese
filter system is hauled away.
The septic tank sludge level and all floats and alarms are tested monthly and are in working order. The septic tank effluent
filter was cleaned monthly, but it is difficult to clean. Staff bought a second one and now they are switched out monthly.
The filter is easy to clean after it has dried. The septic tank has not needed to be pumped out yet.
The pumps, alarms, nozzles and general condition of the advantex units were found to be in good order. The 60 degree
flume, flow meter and chlorine pump system were all found to be in good working order. The pump station was found to
have clear water, a mild chlorine odor and pumps and alarms were in working order.
The 5 day wet weather pond has never been used. The berm is in good condition. Freeboard was 8.5 feet. Rain water is
periodically pumped out.
The 1.12 million gallon storage pond was also in good condition. Freeboard was at 6.0 feet. Algae was frequently clogging
the filler but has been controlled with a colorant and with a copper based algaecide, Before the irrigation pump starts each
time, compressed air clears the filter in the pond. The dripfields are irrigated manually for 45 to 55 minutes per zone and
flow rates are observed and recorded during irrigation. A change in flow rate indicates a line break or a stuck solenoid etc.
Twice a year, dripfield lines are flushed of accumulated growth. Clogging of the drip emitters has not been a problem. The
system operates at about 40 to 60 psi.
Dripfields were not operated during the inspection due to rain, but staff report that everything is in good order. Repairs to
driplines is needed frequently due to damage by squirrels and deer, etc. Three fields are in trees and one is in grass. Staff
reported that the dripfields in the woods are easier to maintain and repair.
The monitoring wells are in good condition. The upgradient well and side gradient wells have had periodic low level fecal
coliform bacteria for years. it is very unlikely that this contamination is due to the irrigation.
NDMR and NDAR reports are being submitted complete and on time. Wastewater constituents and flow rates are well
within permit limits.
The previously used treatment unit has been removed.
On the day of the inspection, the permit appeared to be well run and operating within permit conditions.
Page 2 of 5

Permit: W00023896 Owner - Facility: The University of North Carolina at Chapel Hill
Inspection Date: 03/23/2020 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Tyae
Yes No NA NE
Single Family Drip
Activated Sludge Drip, LR
Reuse (Quality)
Single Family Spray, LR
Recycle/Reuse
Activated Sludge Spray, HR
Activated Sludge Spray, LR
Infiltration System
Lagoon Spray, LR
Treatment
Yes No NA NE
Are Treatment facilities consistent with those outlined in the current permit?
N 0 ❑ ❑
Do all treatment units appear to be operational? (if no, note below.)
Comment:
Treatment Disinfection
Yes No NA NE
Is the system working?
E
Do the fecal coliform results indicate proper disinfection?
■
Is there adequate detention time (-30 minutes)?
E ❑
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?
■ 11 El El
If tablets, are tablets present?
0❑ E 11
Are the tablets the proper size and type?
Is contact chamber free of sludge, solids, and growth?
E 11 0 ❑
If LIV, are extra UV bulbs available?
❑ ❑ N El
If UV, is the UV intensity adequate?
11❑ E ❑
# Is it a dual feed system?
Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)?
0
If yes, then is there a Risk Management Plan on site?
If yes, then what is the EPA twelve digit ID Number? (1000- -_)
If yes, then when was the RMP last updated?
Comment:
Record Keeping Yes No NA NE
Page 3 of 5

Permit: W00023896 Owner - Facility:The University of North Carolina at Chapel Hill
Inspection Date: 03/2312020 Inspection Type :Compliance Evaluation Reason for Visit: Routine
Is a copy of current permit available?
N ❑ ❑ ❑
Are monitoring reports present: NDMR?
N ❑ ❑ ❑
NDAR?
0 ❑ ❑ ❑
Are flow rates less than of permitted flow?
E ❑ ❑ ❑
Are flow rates less than of permitted flow?
N Cl ❑ ❑
Are application rates adhered to?
■ ❑ ❑ ❑
Is GW monitoring being conducted, if required (GW-59s submitted)?
0 ❑ ❑ ❑
Are all samples analyzed for all required parameters?
E ❑ ❑ ❑
Are there any 21. GW quality violations?
Cl ❑ 0 ❑
Is GW-59A certification form completed for facility?
0 ❑ ❑ ❑
Is effluent sampled for same parameters as GW7
❑ ❑ ❑
Do effluent concentrations exceed GW standards?
®❑ ❑ ❑
Are annual soil reports available?
❑ ❑ ❑
# Are PAN records required?
❑ ❑ 0 ❑
# Did last soil report indicate a need for lime?
❑ ❑ ❑ E
If so, has it been applied?
❑ ❑ ❑ 0
Are operational logs present?
0 ❑ ❑ ❑
Are lab sheets available for review?
❑ ❑ ❑
Do lab sheets support data reported on NDMR?
❑ ❑ ❑
Do lab sheets support data reported on GW-59s?
E ❑ ❑ ❑
Are Operational and Maintenance records present?
0 ❑ ❑ ❑
Were Operational and Maintenance records complete?
N ❑ ❑ ❑
Has permittee been free of public complaints in last 12 months?
0 ❑ ❑ ❑
Is a copy of the SOC readily available?
❑ ❑ N ❑
No treatment units bypassed since last inspection?
0 ❑ ❑ ❑
Comment:
End Use-Irriciation
Yes No NA NE
Are buffers adequate?
❑ ❑ ❑
Is the cover crop type specified in permit?
N ❑ ❑ ❑
Is the crop cover acceptable?
N ❑ ❑ ❑
Is the site condition adequate?
❑ ❑ ❑
Is the site free of runoff 1 ponding?
❑ ❑ ❑
Is the acreage specified in the permit being utilized?
0 ❑ ❑ ❑
Is the application equipment present?
❑ ❑ ❑
Is the application equipment operational?
❑ ❑ ❑
Is the disposal field free of limiting slopes?
❑ ❑ ❑
Page 4 of 5

Permit: W00023898 Owner - Facility: The University of North Carolina at Chapel Hill
Inspection Date: 03/23/2020 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Is access restricted and/or signs posted during active site use? 0 0 0 ❑
Are any supply wells within the CB7 ❑ ❑
Are any supply wells within 250' of the CB7 11❑
How close is the closest water supply well?
Is municipal water available in the area?
# info only: Does the permit call for monitoring wells? q ❑ 0 ❑
Are GW monitoring wells located properly w/ respect to RB and CB? M ❑ ❑ El
Are GW monitoring wells properly constructed, including screened interval? 0 E] ❑ ❑
Are monitoring wells damaged? ❑ ❑ 0 ❑
Comment:
Page 5 of 5