NC0026611_Permit Modification_20070130

NPDES DOCIMENT SCANNING COVER SHEET
NPDES Permit:
NC0026611
Morehead City WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 30, 2007
This document Ise printed on reu8ce paper - ignore any
content an the re"erse side

Michael F. Easley, Governor
( WACO TF�4
v
January 30, 2007
Mr. R. Randy Martin
City Manager
Town of Morehead City
706 Arendell Street
Morehead City, North Carolina 28557
Subject:
Dear Mr. Martin
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P. E. Director
Division of Water Quality
NPDES Permit Modification
Permit Number NC0026611
Morehead City WWTP
Carteret County
The Division issued NPDES permit NC0026611 to the Town of Morehead City on June 27, 2005. The
Division has received your December 13, 2006 proposal for permit modification at the subject facility. In your
letter, you requested the limit for total residual chlorine not become effective until the expansion of the facility is
complete and a UV, system installed, which should occur by December 1, 2008.
In accordance with your permit modification request and our review, the Division is forwarding herewith a
modification to the subject permit. Enclosed please find the modified permit pages. These pages should be inserted
into your permit and the old ones 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 pern!its 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,
- or = Alan W. Klimek, P.E.
cc: Wilmington Regional Office, Surface Water Protection Section
Central Files
NPDES File§
No `Carolina
tura!!y
N. C. Division of Water Quality 1617 Mail Service Center
Internet: http!lh2o.enr.state.nc.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 No. N03026611
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration orexpansion above 1.7
MGD, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such
discharges shall be limited and monitored by the Permittee as specified below:
PATER
LIMITATIONS
MONITORING REQUIREMENTS
EFFLUENT
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Location 1
Flow (MGD)
1.7
Continuous
Recording
I or E
BOD5 (Summer)2.
20.0 mg/L
30.0 mg/L
3/Week
Composite
I, E
BOD5 (Winter)2.3
30.0 mg/L
45.0 mg/L
3/Week
Composite
I, E
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
•
3/Week
Composite
I, E
NH3 as N
Weekly
Composite
E
Dissolved Oxygen
Daily average not less than 5.0 mg/L
3/Week
Grab
E
Fecal Coliform
86/100 ml
172/100 ml
3/Week
Grab
E
Total Residual Chlorine4
13 mg/L
3/Week
Grab
E
Enterococci (geometric mean) 5
35/100 ml
501/100 ml
3/Week
Grab
E
Temperature
Daily
Grab
E
TN (mg/L)
Monthly
Composite
E
Total Phosphorus.
Monthly
Composite
E
PH
Between 6.8 and 8.5 Standard Units
3/Week
Grab
E
Total Copper
2/Month
Composite
E
Total Zinc
2/Month
Composite
E
Acute Toxicity'
Quarterly
Composite
E
Footnotes:
1. I: Influent. E: Effluent. See condition A (3) of this permit for instream monitoring requirements.
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. Summer shall be defined as April 1— October 31 with winter defined as the balance of the year.
4. See Condition A.(4.)
5. See Condition A.(5.)
6. Acute Toxicity (Mysidopsis bahia) P/F, February, May, August and November, see special condition A.
(6.) of this permit.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM TN OTHER THAN TRACE
AMOUNTS.
Page 4

Permit No. NC0026611
A. (3.) INSTREAM MONITORING REQUIREMENTS
Instream monitoring is required for the following parameters at the locations specified:
s F EF,FLU
. ' 1,
` ..a C
! C N
.. fX" 4
ITT' :. , ,w
=
t "-;!
RxSTICS - �!.
! ^�.�z_, K -•.....?
: L• F -. . � v
4 ;. Measurement Fre' ueii y
1'x <M:4eas??zr mr ,a. '.n.;+ u{ cy i•r r^' Y
z : '7 .rx. .' .t.- .i e r L"x �
•
�„ .,� i..4._.. _?. `�': ' . t, h. , ..at. �. .. _ �. ...-�1 t.:.
--..' -
.� Sam Ie T e :.
, & S . l : yp
�; ti .y
,.. .•
t, ...,, � .. { a.
- Sample al
-. ; ` , ' „ r
.4.:t.'.'
I ocanon� 1 e
. .,._.7..-,
Fecal Coliform
,
June -Sept
3/week
Grab
U, D
October -May
1/week
Dissolved Oxygen
June -Sept
3/week
Grab
U, D
October -May
1/week
Temperature
June -Sept
3/week
Grab
U, D
October -May
1/week
Chlorophyll -a
Monthly
Grab
U, D
Total Nitrogen
Monthly
Grab
U, D
Total Phosphorus
Monthly
Grab
U, D
Footnotes:
1. U - Upstream at Barbour Road Bridge, D- Downstream at Piggotts Bridge.
A. (4.) Total Residual Chlorine
The limit for total residual chlorine shall become effective upon completion of the wastewater
treatment plant expansion, but no later than December 1, 2008. If a disinfection method different
than chlorination/dechlorination is used, the total residual chlorine limit will not be applicable.
A. (5.) Entero!cocci Water Quality Criteria
Based on findings from recent epidemiological studies, the United States Environmental
Protection Agency (US EPA) has developed new water quality criteria for enterococci in both
freshwater and marine waters. Enterococci are enteric bacteria used to indicate fecal
contamination and the possible presence of pathogens in water. Currently, the US EPA does not
have validated enterococci methods for use in effluent matrices. The Agency is in the process of
trying to validate methods for use with wastewater effluent. As a result of the new US EPA water
quality criteria and because the US EPA has not yet promulgated/approved testing methods for
use in effluent matrices, the permittee will have limits and monitoring requirements for
enterococci as follows:
• Twelve (12) months following the effective date of this permit, the permittee shall monitor
for Enterococci (with no effluent limit) as required by A. (1.) above; and
• Twenty1four (24) months following the effective date of this permit, the monthly average
limit for Enterococci shall take effect.
Page 6

Permit No. NO0026611
A. (2.) EFFLUENT LIMITATIONS AND MONITORING RE QUIRE ME NTS
Beginning on the effective upon expansion above 1.7 MGD, the Permittee is authorized to
discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by
the Permittee as specified below:
PARAMETER
LIMITATIONS
MONITORING REQUIREMENTS
EFFLUENT
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Location 1
Flow (MGD)
1 2.5
Continuous
Recording
I or E
BOD5 (Summer)2►3
5.0 mg/L
73 mg/L
Daily
Composite
I, E
BOD5 (Winter)2.3
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
Total Suspended Solids2
10.0 mg/L
15.0 mg/L
Daily
Composite
I, E
NH3 as N (Summer).3
1.0 mg/L
3.0 mg/L
3/Week
Composite
E
NH3 as N (Winter)3
2.0 mg/L
6.0 mg/L
3/Week
Composite
E
Dissolved Oxygen
Daily average not less than 6.0 mg/L
Daily
Grab
E
Fecal Coliform
14/100 ml
28/100 ml
Daily
Grab
E
Total Residual Chlorine4
13 µg/L
Daily
Grab
E
Enterococci (geometric mean)
35/100 ml
501/100 ml
Daily
Grab
E
Temperature
Daily
Grab
E
TN (mg/L)
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
pH
Between 6.8 and 8.5 Standard Units
Daily
Grab
E
Total Copper
2/Month
Composite
E
Total Zinc
2/Month
Composite
E
Acute Toxicity5
Quarterly
Composite
E
Footnotes:
1. I: Influent. E: Effluent. See condition A. (3) of this permit for instream monitoring requirements.
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. Summer shall be defined as April 1— October 31 with winter defined as the balance of the year.
4. See Condition A.(4.)
5. Acute Toxicity (Mysidopsis bahia) P/F, February, May, August and November, see special condition A.
(6) of this permit.
TARE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE
AMOUNTS.
Page 5

DEMUS L. THOMPSON, Mayor Pro-Tem
Council
GEORGE W. BALLOU
PAUL W. CORDOVA
DAVID HORTON
JOHN F. NELSON
MOREHEAD CITY
NORTH CAROLINA
Mr. Gil Vinzani
NCDWQ -- NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
706 Arendell Street
Morehead City, North Carolina 28557-4234
TEL [phone]
FAX [phone]
www.townofmorehead.com
DECLjk%1.7-7 p;1"-1
1 z
December 13, 2006
EIR %t ltr,LiflY g
F-C�lid i. BRANCH
GERALD A. JONES, JR., Mayor
R. RANDY MARTIN
City Manager
Re: Request for Permit Modification to NPDES Permit Number NC0026611 / Authority
to Construct Number 026611A01 for a WWTP Expansion
Dear Mr. Vinzani,
The Town of Morehead City respectfully requests consideration of a Permit Modification
to the Town's NPDES Permit Number NC0026611. The Permit Modification requested
is to keep tie Total Residual Chlorine parameter at monitor only until the WWTP
Expansion referenced above is completed. Morehead City's goal is to utilize a more
environmentally friendly method of disinfection — ultraviolet light. The Mayor , Town
Council, City Staff, as well as myself support this goal.
The WWTP Expansion as bid did not include UV disinfection, however, the Project
Budget adopted by the Town Council on December 12, 2006 (Copy attached) included
the UV System as Anticipated Change Order Number 2. Funding of the Change Order
will be accomplished by a combination of reduced construction costs and utilization of
part of the Contingency Monies. The WWTP Expansion is scheduled to be completed
and online by the end of 2008/beginning of 2009. At that time, the UV System will be
completed and operational.
We appreciate your consideration of our request. If there is any additional information
you need or if you have any questions, please let us know.
Yours truly
R. Randy Marti
City Manager
•
cc Steve Hamilton
Carl Dangerfield
ADAIEOEIP Equal Opportunity Employee Provider

PROJECT BUDGET
CONTRACT NO. 31 - WASTEWATER TREATMENT PLANT EXPANSION
TOWN OF MOREHEAD CITY
DECEMBER, 2006
Anticipate Anticipated
Change Order Change Order
No. 1 RDP- No. 2 UV
EXPENDITURES Initial Award Dryer System Total
Contract No. 31 - Wastewater Treatment Plant Expansion
w/Altercate RDP Lime Sludge System $13,573,000.00 $207,000.00 ? $13,780,000.00
Contingency (5%) 678,650.00 0.00 ? 678,650.00
Basic Engineering (5.66% x $13,573,000)* 768,232.00 20,000.00 ? 788,232.00
Engineering due to Revised Scope (Fenton Dryer Design)
(.8 x 5.66% x 1,400,000) 63,392.00 0.00 0.00 63,392.00
Technical Services During Construction 408,470.00 0.00 0.00 408,470.00
Legal/Admin 10,000.00 0.00 0.00 10,000.00
Closing Fee 300,000.00 0.00 0.00 300,000.00
Operation & Maintenance 15,500.00 0.00 0.00 15,500.00
One -Year Start -Up Services 7,500.00 0.00 0.00 7,500.00
Other 5,256.00 0.00 18,000.00 23,256.00
TOTAL $15,830,000.00 $227,000.00 $18,000.00 $16,075,000.00
REVENUES
DWQ Loan $15,000,000.00 $0.00 $0.00 $15,000,000.00
Sales Tax Refund 400,000.00 0.00 0.00 400,000.00
Local Funds 430,000.00 227,000.00 18,000.00 675,000.00
TOTAL $15,830,000.00 $227,000.00 $18,000.00 $16,075,000.00
*DWQ will allow up to 7.0949% of construction costs for planning and engineering design expenses or $962,991.00.
AG -PC 1 1D10051FTL12006 1
MHC-CN3I-WWTP-PROJECT-BUDGET 061206