NC0078131_technical correction_20100305

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
March 5, 2010
Mr. Jim Freeman, City Manager
City of Havelock
P.O. Drawer 368
Havelock, North Carolina 28532
Subject: Correction to NPDES Permit NC00078131
Brown Boulevard Water Treatment Plant
City of Havelock
Craven County
Dear Mr. Freeman:
The Division of Water Quality (the Division) has noticed a small error in your permit, effective September 1,
2008. Your receiving -stream monitoring for TSS should not have been bound by permit limits, therefore we
have revised your TSS monitoring requirements [see permit section A.(1.)].
Attached, please find permit change -pages. Please advise David Hemenway, WTP Supervisor/ORC to insert
these pages into your existing permit and discard the old pages. We require no further action by you.
This permit is not transferable except after notice to the Division of Water Quality. The Division may modify, or
revoke and reissue this permit. This permit does not affect your legal requirements to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or
any other Federal or local government.
If you have any questions concerning this permit correction, please contact Joe Corporon at telephone number
[phone] or email [e-mail]].
Enclosure: NPDES Permit change page
Sincerely,
Coleen H. Sullins
61
of WArF4
cc: Washington Regional Office - Surface Water Protection Section
Central Files o
Aquatic Toxicology Unit
NPDES Program Files
TACU, attn James Pugh
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 One
Phone: 91M07-63001 FAX: [phone] Customer Service: 1-877-623-6748 Nortb Carolina
Internet: www.ncwaterquality.org Naturally Equal Oppodunity 1 Affirmative Acton Employer

Permit NC0018131
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge filter backwash from Outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
PARAMETERS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 1
Flow
0.360 MGD
1 /Month
Instantaneous or
Continuous
E
Total Suspended Solids (TSS)
30.0 m
45.0 m
I/Month
Grab
E
Total Suspended Solids (TSS)
I/Month
Grab
U & D
Total Dissolved Solids TDS
I/Month
Grab
E
Dissolved Oxygen O
I/Month
Grab
E
Total Residual Chlorine TRC 2
13 2
I/Month
Grab
E
Temperature
]/Month
Grab
E, U & D
Salim
]/Month
Grab
E, U & D
Conductivity
I/Month
Grab
E, U & D
H
6.5 — 8.5 standard units
I/Month
Grab
E
Ammonia Nitro en(NH3)I/Month
Co osite
E
Total Copper
I/Month
Composite
E
Total Chloride
]/Month
Composite
E
Total Iron
]/Month
Composite
E
Total Lead
]/Month
Composite
E
Total Manganese
I/Month
Composite
E
Total Zinc 3
I/Month
Composite
E
Total Quarterly Flow
Monitor & Report
million gallons / quarter)Calculated
I/Quarter
Recorded or
I or E
TKN (mg/L)
NO3-N+NO2-N4 (mg/L)
TN 3 (mom)
Monitor & Report
Monitor & Report
Monitor & Report
1/Quarter
1/Quarter
I /Quarter
Grab
Grab
Grab
E
E
E
Total Phosphorus
Monitor & Report
1/Quarter
Grab
E
Whole Effluent Toxicity 5
Monitor & Report
1/Quarter
Composite
E
Footnotes:
1. E = Effluent; I = Influent; U = upstream at least 50 feet from the outfall; D = downstream at least 50 feet from the
outfall.
2. TRC — Because low-level TRC is currently difficult to quantify in a wastewater matrix, the Division shall consider
all effluent TRC values reported below 50 µg/L to be "in compliance" with the permit. However, the Pemtittee shall
continue to record and submit all values reported using North Carolina -certified field and lab test methods, even if
these values fall below 50 µg/L.
3. Modifications — After one year, (12 samples minimum), the Permittee may petition the Division to reevaluate the
monitoring requirements for a given parameter. If new data wan -ant the Division may modify the permit and may
consider this a minor permit modification.
4. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
5. Whole Effluent Toxicity (WET) testing - Pass/Fail @ 90%, monitor only [Jan, Apr, Jul, Oct-Petmittee's choice
of species: fathead minnow; silverside minnow, mysid shrimp, See Section A. (2.)].
The Permittee shall collect and report only those samples that accurately represent the discharge. The
Permittee shall discharge no floating solids or foam visible in other than trace amounts.