NC0023965_Permit (Modification)_20141119

NPDES DOCUHENT :SCANNING COVER SHEET
NPDES Permit:
NC0023965
Wilmington Northside WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
November 19, 2014
This document is printed on reuse paper - ig-tzor-e arty
coritent on the reirerse side

AlPhEseiy)
ern
NCENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
November 19, 2014
James R. Flechtner, P.E.
Executive Director
Cape Fear Public Utility Authority
235 Government Center Drive
Wilmington, NC 28403
Subject: Monitoring Reduction Request at 16 MGD
NPDES Permit NC0023965
John A. Loughlin (Northside) WWTP
Class 4 Facility
New Hanover County
Dear Mr. Flechtner:
The Division has reviewed your letter request dated July 11, 2014 to reduce monitoring
frequency at the expansion flow of 16 MGD. Based on the reported data from July 2011 through
June 2014 and other criteria, the Division concurs that this facility meets the conditions for
exceptional compliance monitoring frequency reduction. Specifically, this permit modification
provides for the following changes, effective immediately:
• Modify Effluent Sheet A(2) from Daily monitoring to 2/Week monitoring for BOD, TSS,
NH3-N, and Enterococci.
Attached is the modified effluent sheet A(2) page for your 16.0 MGD permitted flow with the
reduced monitoring frequency incorporated. Please insert this modified copy and discard the
older version. The Division understands that there has been no change in infrastructure or
treatment at this plant since 2009, and the expansion to 16 MGD is awaiting completion of a 16
MGD force main.
If any parts, measurement frequencies or sampling requirements contained in this permit
modification are unacceptable to you, you have the right to an adjudicatory hearing upon written
request within thirty (30) days following receipt of this letter. This request must be in the form
of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and
filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]
Internet:: www.ncwaterauality.orq
An Equal Opportunity Affirmative Action Employer

James R. Flechtner, P.E.
November 19, 2014
Page 2 of 2
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or other Federal, State, or local government entities.
If you have any questions concerning this permit, please contact Tom Belnick at telephone
number [phone] or at email [e-mail].
Sincerely,
go, Thomas A. Reeder, Director
Division of Water Resources, DENR
Hardcopy:
Wilmington Regional Office/Water Quality Programs
Central File
NPDES File
ECopy:
[e-mail]

Permit NC0023965
A (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [16.0 MGD]
Beginning upon receipt of the Engineer's Certification for completion of the 16.0 MGD
expansion and lasting until permit expiration, the permittee is authorized to discharge treated
wastewater from outfalls 001 and 002. Such discharges shall be limited and monitored by the
permittee as specified below:
EFFLUENT
PARAMETERS
EFFLUENT
LIMITATIONS
MONITORING
REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Max.
Measurement
Frequency
Sample
Type
Sample
Location1
Flow
16.0 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-day, 20° C 2
(April 1 — October 31)
5.0 mg/L
7.5 mg/L
2/Week
Composite
Influent &
Effluent
BOD, 5-day, 20° C 2
(November 1 -- March 31)
10.0 mg/L
15.0 mg/L
2/Week
Composite
Influent &
Effluent
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
2/Week
Composite
Influent &
Effluent
NH3as N
(April 1 — October 31)
1.0 mg/L
3.0 mg/L
2/Week
Composite
Effluent
NH3as N
(November 1 -- March 31)
2.0 mg/L
6.0 mg/L
2/Week
Composite
Effluent
Enterococci (geometric
mean)
35/100 mL
276/100 mL
2/Week
Grab
Effluent
Temperature
Daily
Grab
Effluent
pH
> 6.8 and < 8.5 standard units
Daily
Grab
Effluent
Dissolved Oxygen
Daily average > 6.0 mg/L
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
(NO2 -N + NO3 -N + TKN)
Monthly
Composite
Effluent
Acute Toxicity 3
Quarterly
Composite
Effluent
Dissolved Oxygen 4
Variable 5
Grab
U1, U2, D
Temperature 4
Variable 5
Grab
U1, U2, D
Effluent Pollutant Scan
Monitor and Report
Footnote 6
Footnote 6
Effluent
Footnotes:
1. U1: upstream in the NE Cape Fear River at the NC Hwy. 133 crossing. U2: At least 200 feet
upstream of the outfall. D: downstream at channel marker 61 on the Cape Fear River.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed
15% of the respective influent value (Le., 85% removal is required).
3. Chronic Toxicity (Ceriodaphnia) P/F at 4.8% with testing in February, May, August and November;
see A (4).
4. Instream Monitoring — As a member of the Lower Cape Fear River Program (LCFRP), instream
monitoring requirements are provisionally waived. If your membership in the LCFRP is terminated,
the Division must be notified immediately and the instream monitoring requirements in this permit
become effective. The Division may then reopen this permit to establish any additional sampling
requirements deemed necessary.
5. Variable Frequency — Stream sample shall be collected 3/week during the summer months of June,
July, August, and September; samples shall be collected weekly during the rest of the year.
6. The permittee shall perform three effluent pollutant scans during the term of this permit [see A (7)].
Discharge shall contain no floating solids or foam visible in other than trace amounts.

NM Cape Fear
Public Utility Authority
Stewardship. Sustainability. Service.
James R. Flechtner, PE
Interim Chief Executive Officer
235 Government Center Drive
Wilmington, NC 28403
910-332-6669
[e-mail]
July 11, 2014
Mr. Tom Belnick, Supervisor
NC DENR/DWQ/Complex Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
RECEIVEDIDENRIDWR
JUL 16 2014
Water Q Seciyon
Permitting
Re: Monitoring Reduction Request for 16 MGD Flow - NPDES Permit NC0023965
James A. Loughlin Wastewater Treatment Plant ,., J li(,
Cape Fear Public Utility Authority (CFPUA) / v ,`i
New Hanover County, North Carolina
Dear Mr. Belnick,
On October 22, 2012, DWQ issued a guidance document that included approval criteria for
reducing monitoring frequencies in NPDES permits for exceptionally performing facilities.
CFPUA's James A. Loughlin Wastewater Treatment Plant has a history of excellent treatment
performance producing an effluent water quality well below permit limits. The plant has
undergone an expansion and upgrade to treat 16 MGD and has been operating with no change
in infrastructure or treatment since 2009. We are finalizing completion of the plant's 16 MGD
force main and I anticipate gaining approval to discharge at the higher flow rate in a few
months.
CFPUA was granted a reduction in monitoring frequency in October 2013 for BOD, TSS, NH3-N,
and Enterococci from daily to two times per week for our present permitted flow of 10 MGD. I
am requesting that reduction in monitoring frequency for the same parameters be allowed to
continue at the 16 MGD flow rate. Please note that there is no change in treatment from this
plant, which received the exceptional facility performance determination and a grant of
reduced monitoring.
I have enclosed a summary of monitoring results for July 1, 2011 through June 30, 2014 along
with statistical analyses using the 16 MGD permit limits. The data indicates that the plant's
discharge consistently meets the 16 MGD permit limits and that compliance for the four target
parameters is exemplary. Following are our comments for each of DWQ's approval criteria
cited in the October 22 document.

Mr. Tom Belnick, Supervisor
NC DENR/DWQ/Complex Permitting Unit
Northside WWTP RECEIVEDIDENRIDWR
July 11, 2014 JUL 16 2014
Page Two Water Quality Se
c�lon
Permitting
1. This facility has had no civil penalty assessments for permit limit violations for each of
the four target parameters during the past three years for the 10 MGD permit limits. An
evaluation of the data using the 16 MGD permit limits indicates that it is likely that the
facility would have received one civil penalty for exceeding the weekly NH3-N limit for
the week of September 5, 2011.
2. Neither CFPUA nor CFPUA employees have been convicted of criminal violations of the
Clean Water Act within the past five years.
3. This facility is not currently under an SOC for effluent limit noncompliance for the four
target parameters.
4. This facility is not on EPA's Quarterly Noncompliance Report for target parameter limit
violations. Our review of EPA's Facilities Watch List posted on the ECHO website found
some invalid listings for SNC DMR non -receipt violations. Vanessa Manuel,
Environmental Senior Specialist in the NCDENR Point Source Branch, has advised that
problems with EPA's new database, ICIS-NPDES, has caused the invalid entries and that
she will work with EPA to have invalid violations and SNC flags removed.
5. As demonstrated in the enclosed data summary, the three-year arithmetic mean of
effluent data for BOD5,TSS, and NH3-N is less than fifty percent of the monthly average
permit limit for each of the parameters. An annual arithmetic mean of the seasonal
limits for BOD and NH3-N is used in the calculation. The three-year geometric mean of
effluent data for Enterococci is also less than fifty percent of the monthly geometric
mean permit limit.
6. No daily sampling results during the three-year period are over 200% of the monthly
average limit for BOD and TSS. There are fourteen daily sampling results over 200% of
the monthly average limit for NH3-N. DWQ's criterion for NH3-N is to have no more
than 15 daily sampling results over 200% of the monthly average limit.
7. Only one daily sampling result is over 200% of the weekly average limit for Enterococci.
DWQ's criterion for Enterococci is to have no more than 20 daily sampling results over
200% of the weekly average limit.
8. There have been no weekly average limit violations for the four target parameters
during the past year.
9. A reduction in effluent monitoring for this facility should not impair DWQ's assessment
of downstream uses. The consistency of our data over the three-year period supports
that a reduction in the frequency of monitoring should provide sufficient data to
evaluate the water quality of our discharge.
Treatment performance provided by the James A. Loughlin plant has been consistent during the
past three years producing an exceptional quality wastewater effluent that meets our present

Mr. Tom Belnick, Supervisor
NC DENR/DWQ/Complex Permitting Unit
Northside WWTP
July 11, 2014
Page Three
10 MGD permit limits as well as our pending 16 MGD limits. Our facility meets all criteria set by
DWQ to continue with a reduced monitoring frequency. There is no treatment change and no
change in influent corresponding to the paper change from 10 to 16 MGD through the
installation of the expanded force main. This is merely a transmission change, which does not
warrant any increase in the current frequency of monitoring.
Please let me know if there are any questions or whether additional information is needed. We
await your review and modification of our permit.
Sincerely,
James R. Flechtner, P.E.
Executive Director
Enclosure
cc: Beth Eckert, Environmental Management Director, CFPUA
Ken Vogt, Wastewater Treatment Superintendent, CFPUA
Geoff Cermak, Wastewater Treatment Supervisor, CFPUA
RECEIVEDIDENRIDWR
3uL 16 2014
Water
Permitting Sect on

James A. Loughlin WWTP Permit NC0023965
NPDES Monitoring Data - July 1, 2011 through June 30, 2014
BOD mg/L
Enterococcus #/100 ml
TSS mg/L
NH3 mg/L
Monthly limit 16 MGD
5.0 Apr -Oct
7.5 = mean
35 30.0
1.0 Apr -Oct
1.5 = mean
10.0 Nov -Mar
seasonal limit
2.0 Nov -Mar
seasonal limit
Weekly limit 16 MGD
7.5 Apr -Oct
11.25 = mean
276 45.0
3.0 Apr -Oct
4.5 = mean
15.0 Nov -Mar
seasonal limit
6.0 Nov -Mar
seasonal limit
BOD mg/L
Enterococcus #/100 ml
TSS mg/L
NH3 mg/L
50% of monthly limit =
3.75
17.5
15.0
0.75
3 year mean =
1.5 ✓
3.9
/
,J
q/I
`
0.0
/
V
0.3
Is 3 year mean < 50% of monthly
limit?
Yes ✓
Yes
Z
Yes
Yes 47/
200% of monthly limit =
15.0
60.0
3.00
# results > 200% of monthly limit =
0
0
7
14
Are there more tha GO sults >
200% of monthly lima .
No V
No
No V`
200% of weekly limit =
552
# results > 200% of weekly limit =
1
Are there more than 20 results >
200% of weekly limit?
',
No
# weekly limits violations July 1,
2013 through June 30, 2014 =
0
0
0
0
Are there more than 2 non -monthly
average limit violations during
previous year?
No
No
No
No
arlw(so: 105/.7
RECEIVED/DENR/DWR
JUL 1 6 2014
Water Quality
Permitting Section

Flow MGD BOD mg/L BOD mg/L with BOD mg/L Weekly Enterococcus Enterococcus Enterococcus TSS mg/L TSS mg/L with TSS mg/L NH3 mg/L NH3-N mg/L NH3-N
"<" converted Average #/100 ml ti/100 ml with "<" ti/100 ml Weekly "<" converted Weekly with "<" mg/L
to 0 converted to 1 and Geometric Mean to 0 Average converted to 0 Weekly
Date ">"to 670 Average
6/9/2014 6.674 5 5 5 5 <2.5 0.0 <1.0 0
6/10/2014 6.640
6/11/2014 6.448 4 4 <1 1 <2.5 0.0 <1.0
6/12/2014 7.031
6/13/2014 6.932 3 3 4.0 2.2 <2.5 0.0 0.0 <1.0 0 0.0
6/14/2014 6.576
6/15/2014 6.364
6/16/2014 6.625 2 2 9 9 <2.5 0.0
6/17/2014 6.504
6/18/2014 6.820 2 2 1 1 <2.5 0.0
6/19/2014 6.699
6/20/2014 6.952 2 2 2.0
6/21/2014 7.024
6/22/2014 6.729
6/23/2014 6.912 <2.0 0 1 1
6/24/2014 6.846
6/25/2014 7.110 <2.0 0 3 3
6/26/2014 6.840
6/27/2014 7.046 <2.0 0 0.0
6/28/2014 7.320
6/29/2014 6.784
6/30/2014 7.070 2 2 <1 1
<1.0
<1.0
0
0
0
3.0 <2.5 0.0 0.0 <1.0 0 0.0
1.7
<2.5
<2.5
<2.5
<2.5
0.0
0.0
0.0
0.0
0.0
<1.0
<1.0
<1.0
<1.0
0
0
0 0.0
0
Avg
7.525
1.5
1.5
9.2
5.8
0.0
0.0
0.3
0.3
Min
5.715
0.0
0.0
1.0
1.0
0.0
0.0
0.0
0.0
Max
14.761
10.0
7.4
670.0
48.1
6.0
3.7
23.5
17.5
GeoMean
3.9
Monthly limit
16.0
Weekly limit
5.0 Apr -Oct
7.5 = mean
seasonal limit
35
30.0
1.0 Apr -Oct P
1.5 = mean seasonal
limit
10.0 Nov -Mar
2.0 Nov -Mar
7.5 Apr -Oct
11.25 = mean
seasonal limit
276
45.0
3.0 Apr -Oct
4.5 = mean seasonal
limit
15.0 Nov -Mar
6.0 Nov -Mar