NC0086304_Technical Correction_20051019

1 Michael F. Easley, Governor
i
William G. Ross Jr., Secretary
r North Carolina Department of Environment and Natural Resources
1
Y Alan W. Klimek, P. E. Director
Division of Water Quality
October 19, 2005
Mr. Mark Bumgamer
Catawba County Schools
PO Box 1000
Newton, North Carolina 28658
Subject: NPDES Permit Correction
Permit Number NCO086304
Mill Creek Middle School W WTP
Catawba County
Dear Mr. Bumgamer:
The Division issued NPDES permit NCO086304 to the Catawba County Schools on March 23, 2005. The
permit included changes to update the monitoring frequencies to those of a Class H facility. However, in a telephone
conversation between Ms. Jane Williams and Ms. Karen Rust and upon further review, it has come to our attention
the facility is a Class I facility and not a Class H facility. This permit correction revises the monitoring frequencies
to reflect those of a Class I facility.
Enclosed please find the revised permit page. This page should be inserted into your permit and the old one
discarded. This permit modification is issued pursuant to the requirements of North Carolina General Statute 143-
215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency
dated May 9, 1994 (or as subsequently amended).
Please take notice that this permit is not transferable. This permit does not affect the legal requirement to
obtain other permits which may be required by the Division of Water Quality or permits required by the Division of
Land Resources, Coastal Area Management Act or any other Federal or Local government permit that may be
required.
If you have any questions concerning this permit, please contact Karen Rust at telephone number (919) 733-
5083, extension 361.
Sincerely,
AtI-I ��
.*r -. Alan W. Klimek, P.E.
cc: Mooresville Regional Office/Surface Water Protection
Central Files
NPDES Files
r-R-r�`l,Carolina
Naturally
N. C. Division of Water Quality 1617 Mail Service Center
Internet: httpJ/h2o.enr.state.M.us 512 N. Salisbury St.
An Equal Opportunity/Affirmative Action Employer
Raleigh, North Carolina 27699-1617 Phone: [phone] Customer Service
Raleigh, NC 27604 Fax: [phone]

Permit NCO086304
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
0.0065 MGD
Weekly
Instantaneous
Influent or Effluent
BOD, 5-day (20°C)
30.0 mg1L
45.0 mg1L
21Month
Grab
Effluent
Total Suspended Residue
30.0 mg1L
45.0 mg1L
21Month
Grab
Effluent
NH3 as N
Monthly
Grab
Effluent
Fecal Coliform
(geometric mean
2001100 ml
400 / 100 ml
21Month
Grab
Effluent
Total Residual Chlorinei
28 pg1L
21Week
Grab
Effluent
Temperature CC)
Weekly
Grab
Effluent
pH2
21Month
Grab
Effluent
Footnotes:
1. Monitoring is required only if chlorine is used for effluent disinfection.
2. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.