NC0027103_Permit Modification_20140327

AwA
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
March 27, 2014
Mr. Oryan D. Lowry, Town Manager
Town of Pembroke
P. O. Box 866
Pembroke, NC 28372
Subject: NPDES Permit Modification
Permit Number NC0027103
Town of Pembroke WWTP
Robeson County
Dear Mr. Lowry:
Division personnel have reviewed and approved your application for minor modification of the subject
permit. Accordingly we are forwarding the attached modified permit page. Please remove the existing
"Effluent Limitations and Monitoring Requirements" page and replace it with the one attached to this
letter.
This modification reduces the effluent monitoring frequencies for Biochemical Oxygen Demand
(BOD5), Total Suspended Solids (TSS), Ammonia Nitrogen (NH3-N) and Fecal Coliform from 3/week
to 2/week monitoring. The modification was based upon an evaluation of three years of facility effluent
monitoring data. The facility's performance satisfies the criteria established in the "DWQ Guidance
Regarding the Reduction of Monitoring Frequencies in NPDES Permits for Exceptionally Performing
Facilities" as approved by the Director of the Division of Water Resources on October 22, 2012, and
justifies reduced monitoring for these parameters. The modified monitoring frequencies will become
effective on April 1, 2014.
This 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 October 15, 2007 (or as subsequently amended).
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
permits required by the Division of Land Resources, the Coastal Area Management Act or any other
Federal or Local governmental permit that may be required.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer

Mr. Oryan D. Lowry
NC0027103 Monitoring Frequency Reduction 2014
p. 2
1
4
If you have any questions concerning this permit, please contact Bob Sledge at telephone number (919)
807-6398 or via e-mail at [e-mail].
attachment
cc: Central Files
Fayetteville Regional Office - DWR/Water Quality
NPDES Permit File
ec: EPA Region 4 — Mark Nnhfer

Permit NC0027103
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning April 1, 2014 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
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
1.33 MGD
Continuous
Recording
Influent or
Effluent
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
(June 1 - September 30)
3/Week
Grab
Upstream £t
Downstream 1
Temperature, °C
(October 1 - May 31)
Weekly
Grab
Upstream &
Downstream 1
BOD, 5-day, 20° C 2
18.0 mg/L
27.0 mg/L
2/Week
Composite
Influent &
Effluent
Total Suspended Solids (TSS) 2
20.0 mg/L
30.0 mg/L
2/Week
Composite
Influent Et
Effluent
Ammonia as Nitrogen (NH3-N)
12.0 mg/L
35.0 mg/L
2/Week
Composite
Effluent
Dissolved Oxygen (DO)
Not less than
5.0 mg/L daily
average
3/Week
Grab
Effluent
Dissolved Oxygen, mg/L (DO)
(June 1 - September 30)
3/Week
Grab
Upstream Et
Downstream
Dissolved Oxygen, mg/L (DO)
(October 1 - May 31)
Weekly
Grab
Upstream &
Downstream 1
Fecal Coliform
(Geometric mean)
200/100 ml
400/100mt
2/Week
Grab
Effluent
pH
Not more than
9.0 S.U. nor
6.0 S.U.
less than
3/Week
Grab
Effluent
Total Residual Chlorine 3
28 pg/L
3/Week
Grab
Effluent
Total Kjeldahl Nitrogen (TKN)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Nitrite/Nitrate Nitrogen
(NO2-N + NO3-N)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Total Nitrogen (TN)
TN = (NO2-N + NO3-N) + TKN
Monitor and Report, mg/L
Monthly
Calculated
Effluent
Total Phosphorus (TP)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Cadmium, pg/L 4
Monthly
Grab
Effluent
Chronic Toxicity 5
Quarterly
Composite
Effluent
Pollutant Analysis 6
Annually
Composite
Effluent
Footnotes:
1. Sample locations: Upstream = CSX R.R. Trestle (above plant), Downstream = at Bridge SR 1554.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15 percent of
the respective monthly average influent value (85% removal).
3. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection. The
Division shall consider all effluent TRC values reported below 50 ug/t to be in compliance with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory (including field certified), even if these values fall below 50 ug/l.
4. Cadmium measurement detection minimum of 1 pg/L.
5. Chronic Toxicity (Ceriodaphnia) P/F at 1.7%; January, April, July, and October. See Special Condition A.(2.) of
this permit. Quarterly sampling shall be conducted at the same time as metal and other effluent parameters
sampling is conducted.
6. See Condition A. (3.) of this permit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Facility Name
NPDES Permit
Receiving Stream
303(d) listed?
Data Period of Review
Reviewed by
Date
Data Review Summary
Monitoring Frequency Reduction
W/
�Evaluation
Io,Jh G-c PeM 710 LC W
\(
N C0o,2? 10 3
L.'J' RIv<r
Yes No
aG t+ - t i/z013
a?� a6i
Basin:
BODS
Permit Limits: Summer Winter
Monthly Avg. Weekly Avg. Monthly Avg. Weekly Avg.
I mg/L 11 mg/L 1 mg/L a? mg/L
3 Year Average SG 6 mg/L (target = 4.0
# Daily Values > 36 mg/L 1
Meets the review guidance standards for this parameter? ye,
TSS
Permit Limits:
All Months
Monthly Avg. Weekly Avg.
Za mg/L 80 mg/L
3 Year Average yo < `t r mg/L (target = to
# Daily Values > Elli mg/L _
Meets the review guidance standards for this parameter? ye..3
NH -N
Permit Limits: Summer Winter
Monthly Avg. Weekly Avg. Monthly Avg. Weekly Avg.
/Z mg/L 3 S mg/L /2 mg/L 3 C mg/L
3 Year Average 4 o. S7 mg/L (target = 6 Ai/1)
# Daily Values > V mg/L C J
Meets the review guidance standards for this parameter? `, f
Fecal Coliform/Enterococci
Permit Limits:
All Months
Monthly Avg. Weekly Avg.
Zao /100 MI yao /100 mi
3 Year Geometric Mean < 3 (target = /0 0 )
# Daily Values > Soo __L_
Meets the review guidance standards for this parameter? YS
Attach Violation and Enforcement Reports
Alp /��5 / /Ada - aI s //a 6'

Town of Pembroke
POST OFFICE BOX 866
PEMBROKE, NORTH CAROLINA
28372
MILTON R. HUNT
MAYOR
ORYAN D. LOWRY
MANAGER
AMIRA HUNT
CLERK
December 23, 2013
NC Department of Environment and Natural Resources
Division of Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Permitting Unit:
COUNCILMEN:
LARRY BROOKS
ALLEN G. DIAL
RYAN SAMPSON
Subject: NPDES Permit Renewal
Town of Pembroke
NPDES Permit #NC0027103
Robeson County
The Town of Pembroke is submitting the renewal application for NPDES permit #NC0027103.
The permit application consists of:
Cover letter
One original of Form 2A — NPDES Application for Permit Renewal
- Supplemental Application Information — Parts D & E
- Topographic Map
Process Flow Schematic
Annual Pollutant Scan for the years 2011, 2012, and 2013
- Two copies of Form 2A — NPDES Application for Permit Renewal

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The Town was unaware that a second species toxicity test was required for the permit renewal.
Once we were told of this requirement, we made arrangements to conduct the tests. One second
species test has been concluded and the other three are scheduled to be concluded prior to permit
expiration.
The Town would like to request that the following modifications be made to the permit:
We request that monitoring for BOD, TSS, Ammonia Nitrogen and Fecal Coliform be
reduced under the "exceptionally performing facilities" criteria. The attached data
(summarized in the following table) indicates that the WWTP effluent has exceeded the
minimum criteria for reduced monitoring. In addition to the monitoring results, the plant
meets the other listed criteria.
Analysis of testing results for the past three years:
- Percent of Monthly Average Limit
Parameter
Monthly Limit
3-Year Average
% of Limit
BOD5
18.0 mg/L
4.6 mg/L
24%
TSS
20.0 mg/L
2.4 mg/L
12%
Ammonia N
12.0 mg/L
0.55 mg/L
12%
Fecal Coliform
200/100 ml
3 colonies/100 ml
2%
- Number of Samples Over 200% of Monthly Average Limit
Parameter
200% of Monthly Limit
Number of Samples Over
BOD5
36 mg/L
0
TSS
40 mg/L
3
Ammonia N
24.0 mg/L
0
Four (4) Fecal Co
iforms exceeded 200% of the weekly average limit
It is requested that upstream/downstream monitoring be eliminated. We feel that
monitoring the stream for temperature and dissolved oxygen provides no useful data
regarding the WWTP impacts upon the receiving waters. Permit limitations are issued to
protect water quality, including a minimum effluent dissolved oxygen. "Outside"
influences such as stormwater runoff and reduced velocity in the swampy areas that are
subject to decay and placid conditions makes taking dissolved oxygen levels and
temperatures inconclusive in determining wastewater impacts
If second species monitoring is to be continued to be required for permit renewal, we
request that one per year be included in the permit.

Permit NC0027103
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
E;i.rsAl(15 Qe,tm,�
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
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
1.33 MGD
Continuous
Recording
Influent or
Effluent
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
(June 1 - September 30)
3/Week
Grab
Upstream a
Downstream i
Temperature, °C
(October 1 - May 31)
Weekly
Grab
Upstream a
Downstream'
BOD, 5-day, 20° C 2
18.0 mg/L
27.0 mg/L
3/Week
Composite
Influent a
Effluent
Total Suspended Solids (TSS) 2
20.0 mg/L
30.0 mg/L
3/Week
Composite
Influent It
Effluent
Ammonia as Nitrogen (NH3-N)
12.0 mg/L
35.0 mg/L
3/Week
Composite
Effluent
Dissolved Oxygen (DO)
Not less than 5.0 mg/L daily average
3/Week
Grab
Effluent
Dissolved Oxygen, mg/L (DO)
(June 1 - September 30)
3/Week
Grab
Upstream a
Downstream 1
Dissolved Oxygen, mg/L (DO)
(October 1 - May 31)
WeeklyGrab
Upstream a
Downstream
Fecal Coliform
(Geometric mean)
200/100 ml
400/100ml
3/Week
Grab
Effluent
pH
Not more than 9.0 S.U. nor less than
6.0 S.U.
3/Week
Grab
Effluent
Total Residual Chlorine 3
28 pg/L
3/Week
Grab
Effluent
Total Kjeldahl Nitrogen (TKN)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Nitrite/Nitrate Nitrogen
(NO2-N + NO3 N)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Total Nitrogen (TN)
TN = (NO2-N + NO3-N) + TKN
Monitor and Report, mg/L
Monthly
Calculated
Effluent
Total Phosphorus (TP)
Monitor and Report, mg/L
Monthly
Composite
Effluent
Cadmium, pg/L 4
Monthly
Grab
Effluent
Chronic Toxicity 5
Quarterly
Composite
Effluent
Pollutant Analysis 6
Annually
Composite
Effluent
Footnotes:
1. Sample locations: Upstream = CSX R.R. Trestle (above plant), Downstream = at Bridge SR 1554.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15 percent of
the respective monthly average influent value (85% removal).
3. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection. The
Division shall consider all effluent TRC values reported below 50 ug/l to be in compliance with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina certified
laboratory (including field certified), even if these values fall below 50 ug/l.
4. Cadmium measurement detection minimum of 1 pg/L.
5. Chronic Toxicity (Ceriodaphnia) P/F at 1.7%; January, April, July, and October. See Special Condition A.(2.) of
this permit. Quarterly sampling shall be conducted at the same time as metal and other effluent parameters
sampling is conducted.
6. See Condition A.(3.) of this permit.

MONITORING REPORT(MR) VIOLATIONS for:
Permit: nc0027103
Facility Name: %
Major Minor: %
MRs Between: 1-2013
Param Name:
and 12-2013
Region: %
County: %
Report Date: 02/10/14 Page: 1 of 1
Violation Category: Limit Violation Program Category: NPDES WW
Subbasin: %
Violation Action: %
PERMIT: NC0027103 FACILITY: Town of Pembroke - Pembroke WWTP
COUNTY: Robeson
REGION: Fayetteville
Limit Violation
MONITORING OUTFALL /
REPORT PPI LOCATION PARAMETER
11 -2013 001 Effluent
05 -2013
08 -2013
08 -2013
08 -2013
08 -2013
08 -2013
09 -2013
11 -2013
11 -2013
BOD, 5-Day (20 Deg. C) -
Concentration
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Chlorine, Total Residual
001 Effluent Solids, Total Suspended -
Concentration
11 -2013 001 Effluent Solids, Total Suspended -
Concentration
11 -2013 001 Effluent Solids, Total Suspended -
Concentration
VIOLATION UNIT OF CALCULATED
DATE FREQUENCY MEASURE LIMIT VALUE % OVER LIMIT VIOLATION TYPE VIOLATION ACTION
11/23/13 3 X week mg/I 27 29.23 8.27 Weekly Average Exceeded None
05/20/13 3 X week ug/I 28 33 17.86
08/07/13 3 X week ug/I 28 31 10.71
08/08/13 3 X week ug/l 28 36 28.57
08/12/13 3 X week ug/I 28 31 10.71
08/14/13 3 X week ug/I 28 29 3.57
08/29/13 3 X week ug/I 28 29 3.57
09/04/13 3 X week ug/I 28 43 53.57
11/18/13 3 X week ugll 28 29 3.57
11/16/13 3 X week mg/I 30 69.33 131.11
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Daily Maximum Exceeded No Action, BPJ
Weekly Average Exceeded None
11/23/13 3 X week mg/I 30 39.57 31.89 Weekly Average Exceeded None
11/30/13 3 X week mg/I 20 31.42 57.12 Monthly Average Exceeded None