NC0020656_Permit (Issuance)_20010116

NPDES DOCUMENT SCANNING COVER SHEET
NC0020656
Laurinburg / Leith Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 16, 2001
This document is printed on reuse paper - ig7nore arty
content on the iNeiirerese aide

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Mike Easley, Governor
Sherri Evans -Stanton, Acting Secretary
Kerr T. Stevens, Director
January 16, 2001
Robert Ellis. Director Wastewater Plant
P.O. Box 249
Laurinburg, North Carolina 28353
Dear Mr. Ellis:
kiv47rAl
NCDENR
Subject: NPDES Permit Issuance
Permit No. NC0020656
Leiths Creek WWTP
Scotland County
Division staff have reviewed and approved your application for an NPDES discharge permit.
Accordingly. the Division is forwarding the subject NPDES permit. This permit 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).
The following items appear in this FINAL permit:
• Change in effluent monitoring frequency from 3/Week to Daily, based on monitoring
frequencies specified for a Class 4 facility in 15A NCAC 2B.0500. Based on the new
rating system, facilities with design flows > 2.5 MGD are classified as Class 4 treatment
works. Please note that requirements for daily monitoring exclude weekends and
holidays.
• Delete quarterly effluent monitoring for lead, based on lack of detections between 1999-
2000.
• Update the chronic toxicity test language, which now requires multiple concentration
follow-up testing after a failing test.
• Change the permit expiration date to August 31, 2004.
• Please note that this NPDES permit does not require the submission of Annual
Pollutant Analysis Monitoring (APAM) data.
• There are currently several waters in the Lumber River Basin that have fish
consumption advisories for mercury, and appear as impaired waters on the North
Carolina Draft 2000 303(d) list. It is likely that this listing will increase as additional
sampling within the Lumber River Basin is conducted. Currently, there is insufficient
or no data to determine whether this facility is a mercury source. Therefore, a quarterly
effluent monitoring requirement for total mercury and semi-annual monitoring of
sludge has been added to this permit. The requirement for mercury monitoring will be
re-evaluated at the next permit cycle.
If any parts, measurement frequencies, or sampling requirements contained in this permit 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
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone]., ' FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET © www.enr.state.nc.us

NPDES Permit Issuance
Permit No. NC0020656
Leiths Creek WWTP
Page 2
office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-
6714. Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division. Part
II, E.4. addresses the requirements to be followed in case of change in ownership or control of
this discharge. 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 Quality, the Division of Land Resources, the Coastal Area
Management Act, or any other federal or local governmental permit.
If you have any questions concerning this permit, please contact Tom Belnick at telephone
number [phone], ext. 543.
ungirai'Signed By
David A. Goodrich
Kerr T. Stevens
Enclosure: NPDES Permit No. NC0020656
cc: Mr. Roosevelt Childress, EPA
Fayetteville Regional Office, Water Quality
Point Source Compliance Enforcement Unit
Central Files
NPDES Unit

Permit No. NC0020656
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
City of Laurinburg
is hereby authorized to discharge wastewater from a facility located at
Leiths Creek WWTP
Hall Street Extension
Laurinburg, North Carolina
Scotland County
to receiving waters designated as Big Shoe Heel Creek in the Lumber River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II, III, and IV hereof.
The permit shall become effective March 1, 2001.
This permit and the authorization to discharge shall expire at midnight on August 31, 2004.
Signed this day January 16, 2001.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0020656
SUPPLEMENT TO PERMIT COVER SHEET
City of Laurinburg
is hereby authorized to:
1. Continue to operate the existing 4.0 MGD wastewater treatment facility
located at Leith Creek WWTP, Hall Street Extension, Laurinburg, Scotland
County, and consisting the following treatment components:
■ Mechanical bar screen
■ Mechanical grit removal
■ Influent flow monitoring
■ Aerated equalization basin
■ Influent pump station
■ Flow splitter box
■ Dual 1-MGD extended aeration basins with secondary clarification
■ 2 MGD oxidation ditch with secondary clarification
■ Chlorination
■ Effluent flow measurement
■ Two aerobic digesters
■ Sludge drying beds
■ Effluent force main
■ Cascade aeration
2. Discharge from said treatment works (via Outfall 001) into Big Shoe Heel
Creek, a Class C Swamp water in the Lumber River Basin, at the location
specified on the attached map.

_ r 4
Sulliva
Cem
Latitude:
Longitude:
USGS Quad #:
River Bain #:
Receiving Stream:
Stream Class:
34° 45' 00"
79° 27' 45"
H21SW
Q3-07-05
Big Shoe Heel Creek
C Swamp
Nr
City of Laurinburg
Leith Creek WWTP
Scotland County
NC0020656

Permit No. NC0020656
A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified
below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Max
Measurement
Frequency
Sample
Type
Sample
Locations
Flow
4.0 MGD
Continuous
Recording
I or E
BOD, 5-day, 20°C 2
20.0 mg/1
30.0 mg/1
Daily
Composite
E,I
Total Suspended Residue2
30.0 mg/1
45.0 mg/1
Daily
Composite
E,I
NH3 as N
5.0 mg/1
Daily
Composite
E
Total Residual Chlorine
Daily
Grab
E
Fecal Coliform (geom. mean)
200/100 ml
400/100 ml
Daily
Grab
E
Dissolved Oxygen3
Daily
Grab
E
Temperature
Daily
Grab
E
Conductivity
Daily
Grab
E
PH4
Daily
Grab
E
TotalNitrogen (NO2+NO3+TI4v)
Monthly .
Composite
E
Total Phosphorus
Monthly
Composite
E
Chronic Toxicity5
Quarterly
Composite
E
Copper
Monthly
Composite
E
Zinc
Monthly
Composite
E
Fluoride
Quarterly
Composite
E
Mercury6
Quarterly
Composite
E
Mercury6
Semi-annual
Grab
S
Dissolved Oxygen?
3/Week7
Grab
U, D1, D2
Fecal Coliform7
3/Week7
Grab
U, D 1, D2
Temperature?
3/Week7
Grab
U. D 1, D2
Conductivity?
3/Week7
Grab
U, D 1, D2
Notes:
1. Sample locations: E- Effluent, I- Influent, U- Upstream at least 100-ft above outfall, D 1- Downstream at NCSR
1612, D2- Downstream at NCSR 1108, S- Sludge.
2. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 5.0 mg/1.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Chronic Toxicity (Ceriodaphnia) at 31%; February, May, August, November; refer to Special Condition A(2).
6. Mercury in effluent shall be analyzed using a detection level of 0.2 ug/1. Mercury in sludge shall be reported to
the nearest 0.1 mg/kg (dry weight basis).
7. Upstream/downstream samples shall be collected 3/Week (June -Sept.) and 1 /Week (Oct. -May).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0020656
SUPPLEMENT TO EFFLUENT LIMITATIONS .
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2). CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 31%.
The permit holder shall perform at a minimum, auarteriu monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, May, August, and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment." collection methods, exposure regimes. and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-3
(original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete. accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Environmental Sciences Branch at the address cited above.Should the permittee fail to monitor during a
month in which toxicity monitoring is required. monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test. conditions as specified in the cited document, such as minimum control
organism survival. minimum control organism reproduction, and appropriate environmental controls.
shall constitute an invalid test and will require immediate follow-up testing to be completed no later than
the last day of the month following the month of the initial monitoring.

PUBLIC NOTICE
• STATE OF
NORTH
CAROLINA
ENVIRONMEN-
TAL
MANAGEMENT
COMMISSION/NP
DES UNIT 1617
qua/ V 1 s11 uic �.7ry wwi.
of Water Quality at 512
N. Salisbury Street, Ra-
leigh, NC 27604-1148
between the hours of
8:00 a.m. and 5:00 p.m.
to review information
on file.
NPDES Permit Num-.
ber NC0020656,
LAURINBURG,
CITY-LEITH CREEK,
P.O. BOX 249, LAUR-
INBURG, NC 28353
has applied for a permit
renewal for a facility
located in SCOTLAND
County discharging
treated waste water into
BIG SHOE HEEL •
CRK in the LUMBER
River Basin. Currently
BOD and ammonia are
water quality limited.
This discharge may af-
fect future allocations
in this portion of the re-
ceiving stream. 1 `
Publication Dates: Nov. P)t
14, 2000
uu ufBnos lnogn mot
S unonp atuos SUM
uoa of Wm uWlld ut slo
e s[snlon p q III u
Laurinburg, North Carolina
THE LA URINB URG
EXCHANGE
PUBLISHED MONDAY THROUGH FRIDAY
LAURINBURG, NORTH CAROLINA 28353-0459
ESTABLISHED 1882 P. O. BOX 459
NCDENR/DWQ/NPDES
Attn:Christie Jackson
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
AFFADAVIT OF PUBLICATION
NORTH CAROLINA
SCOTLAND COUNTY
Jane L. Hinson
he/she is Bookkeeper
being duly sworn, deposes and says that
of THE LAURINBURG EXCHANGE,
a daily newspaper published at Laurinburg in the State of North Carolina and
county of Scotland, and that the advertisement:
Notification of Intent to issue a NPDES Wastewater Permit
, a true copy of
which is annexed hereto, was published in THE LAURINBURG EXCHANGE in
the following issues: November 14,2000
Sworn to and subscribed before me this
-o-eudibL
/ —day of �' n
9.
1!ry CnmmieeTnn rv!ras May 7, 2005
C),C),.../y-1.—. CY-
20C"e
. Notary Public

(6,‘0\61j
NORTH CAROLINA,
Cumberland County.
AFFIDAVIT OF PUBLICATION
PUBLIC NOTICE STATE OF
NORTH CAROLINA ENVIRON-
MENTAL MANAGEMENT
COMMISSION/NPDES UNIT
1617 MAIL SERVICE CENTER
RALEIGH NC 27699.1617 NO-
TISUE AINPN DES WAS EWA T TO S
TER PERMIT
On the basis of thorough
staff review and application of
NC General Statute 143.21,
Public law 92-500 and other
lawful standards and regula-
tions, the North Carolina Envi-
ronmental Management Corm
mission proposes to issue a
National Pollutant Discharge
Elimination System (NPOES4
wastewater discharge permit
I to the person(s) listed on the
attached pages effective 45
days from the publish date of
this notice.
Written comments regard-
ing the proposed permit will
be accepted until 30 days af-
ter the publish date of this no-
tice. All comments received
prior to that date are consid-
ered in the final determina-
tions regarding the proposed
permit. The Director of the NC
Division of Water Quality may
decide to hold a public meet• of
ing for the proposed permit
should the Division receive a
significant degree of public
interest.
Copies of the draft permit
and other supporting infonna-
lion on file used to determine
MONTI� conditions present in the draft 8
permit are available upon re-
Not i
In-
quest f drep oduction. Mail of
comments and/or requests
for information to the NC Divi-
sion of Water Quality at the
above address or call Ms.
Christie Jackson at (919) 733-
5083, extension 538.Pleasein-
• clude the NPDES permit num-
ber in any communication. In-
terested persons may also vis•
it the Division of Water Ouali-
ty at 512 N. Salisbury Street,
Raleigh, NC 27604-1148 be-
tween the hours of 8:00 a.m.
and at and 5:00 p.m. to review inter- icati
motion on file. on The Fayetteville Observer was a newspaper meeting all the requiremeri s and
NPDES PERMIT NUMBER:
qualil Nc0020656, LAURINBURG, Sec. No. 1-597 G. S. of N.C.
CITY 4tau IHNBURG235spied from the books and files of the aforesaid corporation and publication.
has applied for a permit re-
newal for a facility located at
SCOTLAND County discharg•
ing treated wastewater into
BIG SHOE HEEL CRK in the
LUMBER Allier Basin. Current-
ly BOD an's( ammonia are wa-
ter quality limited. This dis-
charge may affect future allo-
cation in this portion of the re-
ceiving stream.
I 11/18 149251
Before the undersigned, a Notary Public of said County and State, duly
commissioned and authorized to ad�rtinister oaths, affirmations, etc., person-
ally appeared i LC)
who, being duly sworn or affi ed, according to law, doth depose and say that
he is
of THE FAYE7 TEVILLE PUBLISHING PANY, a corporation organized
and doing business under the Laws of the State of North Carolina, and
publishing a newspaper known as THE FAYETTEVILLE OBSERVER, ini the
City of Fayetteville, County and State aforesaid, and that as such he makes
this affidavit; that he is familiar with the books, files and business of said
Corporation and by reference to the files of said publication the attached
advertisement of
•
was inserted in the aforesaid newspaper in space, and on dates as follows:
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28;
29
30
31
x
i
My commission expires
of
Sworn or affirmed to, and subscribed before me, this
Nov-errVoe✓
day
, A_ D., 20 et).
In Testimony Whereof, 1 have hereunto set my hand and affixed my olfficial steal,
the day and year aforesaid.
day of
46ATU--a 1/0aQielLD
Ncutary Public
Decexrmbey-
, 2000 .
eon Go 5 4c'

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
P.O. Box 29535
Raleigh, NC 27626-0.35.
WATER QUALITY SECTION
FAX# [phone]
FAX TO:
FAX #
PHONE #
Paul Rawls, FRO
FRO AutoDial
FROM:
FAX#
PHONE.#
Tom Belnick, NPDES Unit
919-733-0719
919-733-5083, ext 543
DATE:
SUBJECT:
# PAGES
(including cover)
COMMENTS:
November 6, 2000
NC0020656; Laurinburg/Leith Creek WWTP
11
Paul- I plan to notice this draft for this Wednesday. Only major
change was in monitoring frequency- as Class 4 they will now have
daily monitoring for several parameters. If you get me comments
before Wednesday Ill incorporate; otherwise I'll work any
comments into Final. Sorry for the short notice, but we're trying to
get several noticed by this week
TTJTn'J T7.0T
nn n not
rT In nn: rTr.vn i
XNOTIIT

NCDENR / DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
City of Laurinbwrg
NPDES No. NC0020656
.,,,,i • _
M. .i. �.-'l•..L�•,r'
#.***. - ' - 1
•cam: -.vac. . ,-, .41"r=-'a,asti
(1.) Facility Name:
Leith Creek W WTP
(2.) Permitted Flow,MGD:
4.0 MGD
(6.) County:
Scotland
(3.) Facility Class:
4
(7.) Regional Office:
Fayetteville
(4.) Facility Status:
Existing
(S.) USGS Topo Quad:
H21SW
(Laurinburg NC)
(5.) Pewit Status:
l Existing
r ••!...:=7?_..• 0+ is vIaram!_•
!,i:q •
:.,_�_• — :! r
(1.) Receiving Stream:
Big Shoe Heel Creek
(2.) Subbas .:
030755
(S.) Drainage Area (mi2):
83.00
(3.) Index No.:
14-34
(9.) Summer 7Q10 (cfs)
13.8
(4.) Stremn
Classification:
C Swamp
(10.) Winter 7Q10 (cfs):
24
(S.) 303(d) •Listed:
NO
(11.) 3002 (cfs):
35
(S.) 30S(b) :Status:
NA
(12.) Average Flow (cfs):
95.00
(7.) Use Support I
(13.) IWC (%): v
31
Conditions Incorporated into Permit Renewal
_•
' e • � •, • r.� _-_
�. 77 ;"� f : �•.�_�� •`_I • v t..:' to
,:�, _2Y-
- ,-',:�:1
Increase effluent monitoring
frequency from 3/Weelt to Daily
to reflect Class 4 monitoring
requirements
Effluent Monitoring Frequency-
BOD. TSS, NH3, DO, Fecal, TRC.
Temp.. Cond., pH
Per 15A NCAC 2B .0500. Under
new rating system. facility is
Class IV (> 2.5 MCD)
Retain monthly effluent
monitoring for copper and zinc.
Delete quarterly monitoring for
lead- Retain quarterly
monitoring for fluoride.•
EflluentMetals: Cu, in, Pb
Based on reasonable potential
analysis of effluent data collected
1/99-8/00, and per Permitting
Policy for Action Level Metals.
Update chronic toxicity test
language.
Effluent Chronic Toxicity Testing
Language was changed July
1999, and now requires multiple
conc. testing after failure.
Indicate to permlttee that APAM
submission is not a requirement
of NPDES permit -
APAM- Annual Pollutant •
Analysis Monitoring
No requirement in NPDES
boilerplate.
Change date to 8/31/04
Permit Expiration Date
Per Basin Sched.ule
TT/7n'J
T7•OT ran f. 1%rah
rT In nn 1 rTr. Vri 1

DES PERMIT FACT SHEET City of Laurinburg
Page 2 NPDES No. NC0020656
PROJECT NOTES
Facility Summary
• This is a perrnit renewal for a MAJOR MUNICIPAL operating a 4 MGD POTW. This facility
has been discharging since 1970. There is a small industrial component to the discharge,
but no pretreatment program is required due to lack of SIUs. Residuals are land applied
under permit WQ0002526.
• This facility discharges to Rig Shoe Reel Creek, which flows south to South Carolina. Rig
Shoe Heel Creek is not listed as impaired on the 2000 303(d) listing. According to the
Lumber River Basinwide Water Quality Plan (May 1999), ambient monitoring data has
shown no significant water quality problems at Big Shoe Heel Creek, and benthic
macaroinvertebrate samplings since 1987 have been given an Excellent rating. This outfa)l
was relocated from Leith Creek to Big Shoe Heel Creek in 1983.
Pericit Development
• Permit limits for BOD5/NPI3/DO have been 20/5/5 mg/1 (year-round) since at least 1987,
based on modeling results to protect instream DO. Although instream waste concentration
predicts an allowable NH3 conc. of 2.7 mg/1 (summer), leave limit at 5 mg/1 since facility
has generally been compliant with toxicity test. NPDES recommends renewal of current
limits.
• Current limits for fecal coliform and pH are based on water quality standards contained in
15A NCAC 2B .0211.
• A 1993 memo added a second downstream monitoring station at SR1.1.08 (Robeson County)
Lu alild.iUvu Lu the eniotailg otativii at OR 1012 (Ocotland County). The rationale 'wvao b' aced
on a DO model indicating a potential for decreased DO at both stations. The discharger is a
4 MGD facility representing 31% of the stream and discharges to a swamp system.
• A reasonable potential analysis (RPA) was conducted for effluent data collected from 1 / 99-
8/00. Both • copper and zinc showed potential to exceed their action levels, but per Action
Level Policy no limit is given since facility has generally been compliant with their chronic
toxicity test. Monitoring for Cu and Zn will remain at monthly. Since there were no
detections of lead in effluent (all < 3 ug/1), quarterly monitoring will be deleted. Finally,
fluoride will'remain at quarterly monitoring. The RPA is attached to.the FACT -Sheet.
• APAM data has been submitted annually. though not required by NPDES permit. APAM
data reported a detection of benzene (1.94 ug/1) in 1998, and two detections of chloroform
(1.45 ug/1 and 2.19 ug/1) in 98/97. Since the reported concentrations are well below
corresponding NC WQS or EPA criteria. no monitoring is proposed.
• DMR Data.
• Effluent Chemistry. For the past year (8/00-9/99), the facility reported the following
Lange* cui iLtuwhiy avvt4ge cl lucid. cum:ciLua .suz: iluw (1.5-3.6 IvIGD): BOD (1.7-5.8
mg/1); NH3-N (0.1-1.8 ing/1):1SS (6-15 mg/1): fecal (2-24 org/100 mil, with exception of 225
in Oct. 99): TN (3-14 mg/1); TP (0.3-4 nig/1). treatment for BOD is well below the 20 mg/1
limit. Max TRC concentrations generally ranged from 400-500 ug/1. Effluent DO
concentrations were always > 5 mg/1.
• Effluent Toxicity. Facility has passed chronic tox test 18 of 21 times between 1996-2000.
• Compliance: In 1999, facility failed 2 tox tests, and one monthly fecal coliform violation in
October. Facility also reported an overflow of 4.3 MG at a pump station in October 99 due
to excessive influent flows.
• Upstream/Downstream Data. Facility discharges to Class C Swamp waters. Dissolved
oxygen data shows some DO depressions below 5 rng/1 at the first downstream station, with
recovery at the second downstream station. The upstream station fell to DO values of 5.5-
5.6 mg/l in Fall 1999. The pH values can fall as low as 4 pH units at all instream stations,
reflective of swamp conditions.
Region Data.
• The FRO' submitted a staff report (dated 9/9/99) and recommended permit renewal.
• The FRO conducted a Compliance Evaluation Inspection (CEI) in August 2000. Both the
oxidation ditches and aeration basins were operational and satisfactory.
• Page 2
Version: November 6, 2000
Ttlsn7.7:PT nn. Q nakl
R T J n—CC) —R T F' XP a mmn_ykmanm

. NPDES PERMIT FACT SHEET City of Laurinburg
Puge 3
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Permit Scheduled to Issue:
State Contact
11/15/00
01/02/01
NPDES No. NC0020656
If you have any questions on any of the above information or on the attached
penult; please contact Tom Belnick at [phone], extension 543.
Copies of the following are attached to provide further information on the permit
development:
a Reasonable Potential Analysis (majors only)
Existing permit effluent sheets with changes noted (existing facilities only)
Draft Permit
ITPDES Reconunendation by:
Regional Office Comments
11-6-01)
Hate
Regional Recommendation
Reviewed and accepted by:
iiggnature
((—, -
Date
Regional Supervisor:
Signature
Date
f .'
Signature
. ;/
;...
1
Date
NPDES Unit Supervisor:
Page 3
Version: November 6, 2000
TI/VO'd ZZ:8T 00, 9 ADN 6t2.0-22Z-6I6:Xpd
0mQ-?JN3QJN

TELEPHONE RECORD
Date: I Project: 11/C. 00 ZO 6$10
Time: Ci.)31146iyin4et%�.�ic.
❑ Return Mr. Mrs.
❑ CaII to Address
❑ Call from
Telephone:
Representing:
FAX:
Subject:
NOTES/ SUMMARY
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kfirti.1
1 orit- ("e-41 7L-
( cr-04// t•'14°
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tv/ fro /5 44.0'41‘61-0, ch Alva/um/PI
NEEDED FOLLOW-UP ACTION(S)
1.
2.
3.
4.
5.
BY WHOM/WHEN
1.
2.
3.
4.
5.
cc:
Signed

�UvnLem e� �.P
NPDES Permit No.
Abbr. No.
Pormittoo
Contact
Salutation
Address
City
State
ZIP
Facility Name
Address
City
State
ZIP
Location 1
Location 2
County
Receiving Stream
Classification
River Basin
Subbasin No.
WWTP Status
Design 0
-1Rogtonal Office
Letter cc •1
Letter cc *2
Permit Writer
Ext.
Signature Block 1
Signature Block 2
Signature Block 3
NC0020656
City of Laurinburg
Robert Ellis. Director Wastewater Plant
Mr. Ellis
P.O. Box 249
Laurinburg
North Carolina
• 28353
Leiths Creek WINTP
Hall Street Extension
Laurinburg
North Carolina
28352
Hall Street Extension
Laurinburg
Scotland
Big Shoe Heel Creek
C Swamp
Lumber
030755
Existing
4.0 MGD
Fayetteville
Tom Belnick
543
Tom Belnick
NPDES Unit
Permit Type
Discharge Status
SIC *1
SIC 112
SIC *3
W W Coda #1
W W Codela
WW Coda#k3
WW Code t14
WW Code 115
Basin Code
Latitude
Longitude
Major•-�.._�_.._ ._..__.:
Minor
Subminor
Existing
Existing
4952
01
03
07
05
D 34
M 45
S 00
D
M
S
Type Ownership
Facility Typo
Main Tmt Unit Code
USGS Quad Map No.
Quad Map Name
Stream Index No.
Facility Gass
Public Notice Date:
Issue Date:
79
27
45
MU
Major
05 00 03
H21 SW
Laurinburg NC
14-34
4
11/15/00
01/02/01
303(d) listed (WN)
305(b) listed MN)
Uso Support (S, ST, PS, NS)
Drainage Area (sq. mi.):
S7010 (cis):
W7010 (cfs):
3002 (cis):
QAvg (cis):
IWC (%):
USGS Sta. No.
NO
NA
83.00
13.8
24
35
95.00
31.00

DMR Data Review- EFFLUENT
Facility: Laurinburg/Leith Creek WVVTP
NC00 20656
Preparer: Tom Belnick
Date: 11/3/00
Month
Eff
Avg()
MGD
Eff
Max TRC
ug/I
Eff
AvgBOD
mg/I
Eff
AvgNH3-N
mg/I
Eff
AvgTSS
mg/1
Eff
AvgFecal
#/100m1
Eff
MinDO
mg/I
Eff
TN
mg/I
Eff
TP
mg/I
Aug-00
I. 5
4ID
I
0. Zy
7
`/
8. 0
/ L/
3
Jul-00
1. 7
(15O
2.3
0- l
► Z
5
7•
.'
Jun-00,
I. 7
350
/.7
0.1
6
' Vy
7,7
May-00
1. (Q
1.7
• Z7
7
9
8- 3
ti
Z
Apr-00
J. 9
_310
Z• 6
-10
7
Z
'. 7
5
1
mar.
2. (%
�3Oa
TA
3- Z
) 7
9at
Y-
S
Y
0 • esFeb-00_3-C
t 7 5D
(• 7
0-6
1 1
G1
9.
G
/
Jan-00
Z..(
5• a
_(Z• .
, • , ,
l • 0
` 3
1
Dec-99 I- 7
5TT0
q• 7
• 35
8
__.
3
c• /
s
0.3
Nov-99
Z, 0
5 -n-t-15/
• 7/
7
1
8. 7
S 0• 5
Oct-99
3..5
V O1
S.
).?3
/ 3
22,$)
S, 8
6
/
Sep-99
Z.- Z
7
3.9
I I•
/ S
Z2
S- 3
9
y
Limits:
4,0
20
5
30
200
>5

Clots.) CSi%ts'vf: tt)QC = 5, b rsy, 60
DMR Data Review- INSTREAM DATA
Facility: Laurinburg/Leith Creek WWTP
N C00 20656
Preparer: Tom Belnick
Date: 11/6/00
Month
UPSTR
DO
mg/I
DOWN 1
DO
mg/I
DOWN 2
DO
mg/I
UP/DOWN
pH
units
Aug-00
b. I
SO
70
L/-6
Jul-00
6. S
6. 6
6 -$
g- 6
Jun-00
6 • $
6.3
6.5
9— (o
May-00
7• y
70
6. y
Y— 6
Apr-00
7.3
6.8
8.1
5'10
Mar-00
' . V
8.3
9. /
5-7
Feb-00
2
7. /
8, $
��,,6
Jan-00
:
Dec-99
Nov-99
Oct-99
S • 5
Y. 8
6.0
9-G
Sep-99
5. ,
LH
it— G

IWC Calculations
Laurinburg/Leith Creek WWTP
NC0020656
Prepared By: Tom Belnick, NPDES Unit
Enter Design Flow (MGD):
Enter s7Q10(cfs):
Enter w7Q10 (cfs):
4
13.8
24
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (I
IWC (%)
Allowable Conc. (ug/I)
Fecal Limit
(If DF >331; Monitor)
(If DF <331; Limit)
Dilution Factor (DF)
NPDES Servor/Current Versions/IWC
Ammonia (NH3 as N)
(summer)
13.8 7Q10 (CFS)
4 DESIGN FLOW (MGD)
6.2 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL
31.00 IWC (%)
55 Allowable Conc. (mg/I)
200/100mI
3.23
Ammonia (NH3 as N)
(winter)
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL
IWC (%)
Allowable Conc. (mg/I)
13.8
4
6.2
1.0
0.22
0
24
4
6.2
1.8
0.22
20.53
7
11/2/00

RPA I o-Ci
REASONABLE POTENTIAL ANALYSIS
_
Prepared by: Tom Belnick, 11/03/00
Facility Name =
Laurinburg/Leith Creek WWTP I
- _-
NPDES # =
NC0020656
Qw (MGD) =
4
- -
Qw (cfs) =
6.1888
_
7Q 10s (cfs)=
13.8
/WC(%)=
31.00
Chronic CCC w/s7Q10 dil.
Acute CMC w/no dil.
Frequency of Detection
Decision
Parameter
FINAL RESULTS, ug/I
FINAL RESULTS, ug/I
#Samples
# Detects
Arsenic
Max. Pred Cw
0.0
Allowable Cw
161.3
750
0
0
Cadmium
Max. Pred Cw
0.0
Allowable Cw
6.5
15
0
0
Chromium
Max. Pred Cw
0.0
Allowable Cw
161.3
1022
0
0
Lead
Max. Pred Cw
3.6
-
Allowable Cw
80.6
34
7
0
DELETE
Copper (A.L.)
_
---
Max. Pred Cw
74.8
Allowable Cw
22.6
7.3
19
19
roost'
Nickel
Max. Pred Cw
0.0
J_
Allowable Cw
283.9
261
0
0
Silver (A.L.)
Max. Pred Cw
0.0
Allowable Cw
0.2
1.2
0
0
Zinc (A.L.)
Max. Pred Cw
281.6
Allowable Cw
161.3
67
19
19
A'10Nt /
Cyanide
Max. Pred Cw
0.0
Allowable Cw
16.1
22
0
0
Mercury
Max. Pred Cw
0.0
Allowable Cw
0.039
NA
0
0
Molybdenum
Max. Pred Cw
0.0
Allowable Cw
NA
NA
0
0
Selenium
Max. Pred Cw
0.0
Allowable Cw
16.1
20
0
0
Fluoride
Max. Pred Cw
2288.0
NOV t 1 -
Allowable Cw
5806.5
NA
7
7
Chloride(A.L.)
Max. Pred Cw
89754.0
3
Allowable Cw
741,935.5
860,000
3
Modified Data: Use 0.5 Detection Limit for non -detects
moNT//Ly
"ow y
off,

Parameter =
Lead
_
Parameter =
Copper (A.L.
Standard =
25
Standard =
7IpglI
Dataset=
1
Dataset=
DMR 8/00-1/99
Nondetects
RESULTS
ModifiedData
Nondetects
RESULTS
ModifiedData
1.5
<3
Std Dev.
0.000
18
Std Dev.
6.602
1.5
<3
Mean
1.500
13
Mean
12.158
1.5
<3
C.V.
0.000
10
C.V.
0.543
1.5
<3
Sample#
7.000
7
Sample#
19.000
1.5
<3
8
1.5
<3
Mult Factor =
2.400
18
Mult Factor =
2.200
1.5
<3
Max. Value
1.500
pg/I
10
Max. Value
34.000
pg/I
Max. Pred Cw
3.600
Ng/1
4
Max. Pred Cw
74.800
pg/I
Allowable Cw
80.645
pg/l
7
Allowable Cw
22.5811pg/I
10
12
11
12
17
13
34
13
9
5

Parameter=
Zinc (A.L.)
1
_
Standard =
50
erg/I
Dataset=
DMR 8/00-1/99
ModifiedData
Nondetects
RESULTS
50
Std Dev.
23.938
35
Mean
44.368
70
C.V.
0.540
35
Sample#
19.000
37
35
Mult Factor =
2.200
32
Max. Value
128.000
pg/I
25
Max. Pred Cw
281.600
pg/I
30
Allowable Cw
161.290
pg/I
20
20
41
55
52
48
128
49
32
49

Ili
Parameter =
Fluoride
Parameter =
Chloride(A.L.)
Standard =
1800
pg/I
_
Standard =
230000
pg/I
Dataset=
Dataset=
1511111111ft
1
ModifiedData
Nondetects
RESULTS
ModifiedData
Nondetects
RESULTS
530
Std Dev.
236.462
28000
Std Dev. 7789.899
730
Mean
648.571
Mean
33913.333
310
C.V.
0.365
_42740
31000
C.V.
0.230
560
Sample#
7.000
Sample#
3.000
1040
820
Mult Factor =
2.200
Mult Factor =
2.100
550
Max. Value
1040.000
pg/1
Max. Value
42740.000
pg/1
Max. Pred Cw
2288.000
pg/I
Max. Pred Cw
89754.000
pg/I
Allowable Cw
5806.452
pg/1
Allowable Cw
741935.484
pg/1

Whole Effluent Toxicity Testing Self -Monitoring Sumrnary October 17, 2000
FACILITIREQUIREMENT YEAR JAN FEB MAR AI'R MAY JUN JUL AUG SEP OCT NOV ITC
Kenly WWTP Penn chr lim: 16'1.; upon cap 0.63MGD chr lim 22% 1996 - - Pass - Late Pau Pass -- - Pass
NC00648911001 Begin:5/1/1998 Frequency: Q P/F + Mar Jun Sep Dec + NonComp:Singlc 1997 - Pass Pau - - NR - -- Pass 6I --- NR
County: Johnston Region: RRO Subbmin: NEU06 1998 - Pass Pass - - Pass - - Pass -- --- Pass
PF: 0.52 Special 1999 - - Pass - Pass - - Pass --- - Fa:l
7Q10: 4.4 IWC(%):15 Order: 2000 >50 21.9 >50 - Pass - -
King's Mtn: Pllot Cr. WWTP Perm chr lim: 33%
NC0020737/001 Begin:3/1/l999 Frequency: Q P/F + Jan Apr Jul Oct
County: Cleveland Region: MRO Subbasin: BRDOS
PF: 6.0 Special
7Q10: 19.0 IWC(%)33 Order:
+ NonComp:Singlc
1996 Pass - - Pau - - NR/Fail Pass - Pass --- --
1997 Pass - Pass -- - Fail Pass - Pass --- ---
1998 Fail.Pess - - Failslg Fallsig Pass Pass - - Pass -- --
1999 Pass - - Fail Fall Pass Fail 40.6 40.6 Fad Fat; 6t
2000 Fail 20.3 NR/20.3 NR/Late Fail 40.6 "8.25 8.8
Kinston Nortltside W\V7'P PERM CHR LIM: 2.4% 1996 Pass - NR/Pass - - NR - - Pass ---
NC0024236/00I Begin:6/l/1994 Frequency: Q P/F + Jan Apr Jul Oct NonComp:SINGLE 1997 Pass - - Pass - - Pass - - Pass -
County: Lenoir Region: WARO Subbasin: NEUOS 1998 Pass - - Pass - - POW - Pass - -
PF: 4.5 Special 1999 Pass - - Pau - - Pass - - Pass - -
7Q10:283.1 IWC(%)2.4 Order: 2000 Pass - - Pass - - Pass
Kinston•Peachtree WWTP PERM CHR LIM: 35% 1996 - Pass - - Pass - Pass - - NR/Pass
NC0020541/001 Begin:5/I/1994 Frequency: Q P/F + Feb May Aug Nov NonComp:SINGLE 1997 - Pass - - Pass - - NRIPass - - Pau
County: Lenoir Region: WARO Subbasin: NEU05 1998 - NR/Pass - - Pass - - Pass - - Pass
PF: 6.75 Special 1999 - Pau - - Pass - - Pass - - Pass
7QI0:282.8 IWC(%)3.5 Order: 2000 -- Pass - Pass - Pass
Kobe Capper Products, Inc. Penn chr lim: 34% 1996 Fail Pass - Pass - Pass - - Fail Pass
NC0035173/001 Begin:2/1/1997 Frequency: Q P/F + Jan Apr Jul Oct NonComp:Single 1997 Fail Pass - Pau - - Fad Pass - Pass -
County: Stokes Region: WSRO Subbasin: ROA01 1998 Pau -- - Pass - Pass - - Pass -
PF: 0.025 Slxa:ial 1999 Pass - Pass - - Pass - - Pass -
7Q10:0.075 IWC(%)34.05 Order: 2000 Pau - Pass - - Pass -
Koch Relining Co, L.P.-North Terminal Perm 24hrp/fac lim: 90% 1996 Pass - - NR/Pass Pass - - Pass - -
NC0076732/001 Begin: 10/1/1996 Frequency: Q + Jan Apr Jul Oct NonComp:Single 1997 Pass - NR/Pass - Pass - - NRM -
County: New Hanover Region: WIRO Subbasin: CPFI7 1998 Pass - Pass - Pass - - Pass -
PF: 0.1 Sporial 1999 Pass - - Pass Pass - Pass - -
7Q10: Tidal 1WC(%):NA Order: 2000 Pass - - Pass - Pass
Lake Waceamaw WWTP PERM CHR LIM: 90% (New perm 7/1/2000) 1996 - - Pass - - Late
NC0021881/001 Begin: I/1/1995 Frequency: Q P/F + Mar Jun Sep Dec NonComp: SINGLE 1997 - - Pass - Pass
County: Columbus Region: WIRO Subbasin: LUM$6 1998 - - Pass - - Pass
PF: 0.4 Special 1999 - - Pass - - Pass
7Q10: 0.0 1WC(%):100 Order: 2000 - - Pau - - Pass
Pass
Pass - Pass
Pass - P298
Pass - - Pass
Late Pass - Pau
Laurinburg Masten Airport -Laurel Hill Perm chr lim: 1.5'!.
NC0005479/001 Begin:12/1/1999 Frequency: Q P/F Mar Jun Sep Dec
County: Scotland Region: FRO Subbasin: LUM55
PF: 0.3 Special
7Q10: 31.0 IWC(%):1.5 Order:
+ NonComp:Single
Y 1996 -
1997 -
1998 NWH
1999 -
2000 -
Pass
Pass - Late Pass Pass - - Pass
Pass - - Pass - - Late Pass - Late
H •- - NM H - Pau - - Pass
Pau - Ell - - Bt - Pass Pass
Pau -- Pass
Laurinburg WWTP PERM CHR LIM: 31% 1996 - Pass - - Pau - Pass - Fall
NC0020656/001 Begin: l/1/1995 Frequency: Q P/F + Feb May Aug Nov NonComp:SINGLE 1997 - Pass - - Pass - - Pass - Pass
County: Scotland Region: FRO Subbasin: LUM55 1998 - Pass - •- Pass -- Pass -- -- Pass
PF: 4.0 Special 1999 .- Pass - ..„....Late---- Pass Fall Fail Pass Pass
7Q10: 13.8 1WC(%)31 Order: 2000 - >60 - Pass - - ---el"
Peas
Laurinburg-Maxton Airport Perm chr lim: 1.3%; if pf 2MGD chr lim 2.6% Y 1996 - - Pau - - Late Pass - Pass - - Pass
NC0044725/001 Begin:3/1/2000 Frequency: Q Mar Jun Sep Dec + NonComp:Single 1997 - - Pass - - Pass - - Pass Pass
County: Scotland Region: FRO Subbasin: LUM5I 1998 -- - Pass - Pass - - Pass --- -- Pass
PF: 1.0 Special 1999 _ - Pass - - Bl - - Pass - Pass
7Q10: 111.0 IWC(%):1.38 Order: 2000 - - Pass - - Pass - -
LCP Plastics. Inc. Penn chr lim: 90%(Grab) 1996 -
NC0036366/001 Begin:4/1/1996 Frequency: Q P/F + Feb May Aug Nov NonComp:Single 1997 -
County: Guilford Region: WSRO Subbasin: CPF08 1998 -
PF: NA Special 1999 -
7Q10: 0.00 IWC(%):100 Order: 2000 -
NRIPess - - Foil Fail Fall Pass - - Pass
Pass - - P888 -- - H - - NR/H
H - H - - H - - H
Pau - - Pass - - Fail Pass - H
H - - H - - H
Y Pre 1996 Data Available
LEGEND:
PERM = Permit Requirement LET = Administrative Letter - Target Frequency = Monitoring frequency: Q- Quarterly; M- Monthly; BM- Bimonthly; SA- Semiannually; A• Annually; OWD- Only when discharging; D- Discontinued monitoring requirement
Begin = First month required 7Q10 = Receiving stream low flow criterion (cfs) += quarterly monitoring increases to monthly upon failure or NR Months that testing must occur - ex. Jan, Apr, Jul. Oct NonComp = Current Compliance Requirement
PF = Permitted flow (MGD) IWC9'. - Instrcam waste concentration P/F = Pass/Fail test AC = Acutc CHR = Chronic
Data Notation: f- Fathead Minnow; • • Ceriodaphnia sp.; my - Mysid shrimp; ChV - Chronic value; P - Mortality of stated percentage at highest concentration; at - Performed by DWQ Aquatic Tox Unit; bt - Bad test
Reporting Notation: --- = Data not required: NR - Not reported Facility Activity Status: I - Inactive, N - Newly Issued(To construct); H - Active but not discharging; t-Morc data available for month in question; • = ORC signature needed
28

Permit No. NC0020656
SUPPLEMENT TO PERMIT COVER SHEET
City of Laurinburg
Leith Creek Wastewater Treatment Plant
is hereby authorized to:
1. Continue to operate a 4.0 MGD facility consisting of mechanical bar screen, grit removal,
influent flow measurement, flow splitter, 2.0 MGD extended aeration facility with secondary
clarification, chlorination, a 2.0 MGD aeration basin (oxidation ditch) with secondary
clarification, effluent flow measurement, chlorination, a 150,000 gallon aerobic digester,
sludge drying beds, effluent force main, and cascade aeration,
2. Complete construction and Aerate the treatment units as indicated in the Authorization to
Construct issued July 2 , 1994, which consist of new influent flow measurement,
equalization pump statio , 6 MG equalization basin with aeration, and 650,000 gallon aerobic
digester for a wastewa r treatment facility located at Leith Creek Wastewater Treatment Plant,
off Covington Street aurinburg, Scotland County (See Part III of this Permit), and
3. Discharge from said treatment works at the location specified on the attached map into Shoe
Heel Creek which is Class C-Swamp waters in the Lumber River Basin.

M1s)vk him)
h !�
A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0020656
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Discharge Limitations
Monthly Avg,
Flow 4.0 MGD
BOD, 5 day, 20°C " 20.0 mg/I
Total Suspended Residue " 30.0 mg/I
NH3 as N 5.0 mg/I
Dissolved Oxygen '"'
Fecal Coliform (geometric mean) 200 /100 ml
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
Weekly Avg, Daily Max
30.0 mg/I
45.0 mg/I
400 /100 ml
Monitoring
Measurement
Frequency
Continuous
-3 veek- -D
-3/ eeic-
-3tWe-eK
--3,week
3/--WPPk b
Week
< 3/Week--A
Monthly
Monthly
- 3/Week- f
Requirements
Sample 'Sample
Type Location
Recording I or E
Composite E,I
Composite E,I
Composite E
Grab E, U, D
Grab E,U,D
Grab E
Grab E, U, D
Composite E
Composite E
Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at least 100 feet above discharge, D - Downstream at (1) NCSR 1612 and, (2)
NCSR 1108.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected three times per week during June, July, August,
and September and once per week during the remaining months of the year.
**The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent values
(85% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/1.
**** Chronic Toxicity (Ceriodaphnia) P/F at 31%; February, May, August and November; See Part III, Condition E.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 3/week at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

FRS s
MEMORANDUM
TO:
DIVISION OF WATER QUALITY
September 9, 1999
Dave Goodrich, Supervisor
NPDES Permits Unit
FROM: Paul E. R
Regional W lit Supervisor
Fayetteville egional Office
SUBJECT: NPDES Permit Staff Report
Laurinburg Leith Creek WWTP
NPDES Permit No. 0020656
Scotland County
Ct�
0
DENR - WATER QUALITY
POINT SOURCE BRANCH
0
_J
Please fmd attached staff report for the subject project with the Fayetteville Regional
Office recommendations.
If you have any questions or require further information, please advise.
PER/bs
Enclosure

SOC PRIORITY PROJECT: YES_ NO X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Weaver
Date: September 9, 1999
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY: Scotland
Permit No. NC 0020656
PART I - GENERAL INFORMATION
1. Facility and Address: City of Laurinburg
Leith Creek WWTP
PO Box 249
Laurinburg, NC 28352
2. Date of Investigation:
3. Report Prepared by: Paul E. Rawls, Regional Water Quality Supervisor, FRO
4. Persons Contacted and Telephone Number: Robert Ellis
910-276-3522
5. Directions to Site: US 402 south at intersection with US 74, go approximately 0.2
miles, turn left onto East Covington Street. Travel on Covington
Street for 0.10 mile and turn left at City recycling center and
follow road back to WWTP.
6. Discharge Point(s), list for all discharge points :
Latitude 34° 45' 00" Longitude: 79° 27' 45"
Attach a USGS map extract and indicate treatment facility site and discharge point on
map.
U.S.G.S. Quad No. U.S.G.S. Quad Name:
H 21 SW Laurinburg, North Carolina
7. Site size and expansion area consistent with application:
X Yes No (If No, explain)

PART I - GENERAL INFORMATION (continued)
8. Topography (relationship to flood plain included): Relatively flat near treatment
units sloping toward creek in vicinity of the influent pump station, above 100 year flood
plain.
9. Location of nearest dwelling: Greater than 400 feet.
10. Receiving stream or affected surface waters: Big Shoe Heel Creek
a. Classification: Class C Swamp
b. River Basin and Subbasin No.: Lumber 03-07-55
c. Describe receiving stream features and pertinent downstream uses:
Fish and wildlife habitat suitable for propagation.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 4.0 MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the Wastewater Treatment facility?
4.O MGD
c. Actual treatment capacity of the current facility (current design capacity).
4.0 MGD
d. Date(s) and construction activities allowed by previous Authorization to Construct
issued in the previous two (2) years:
None in the last two (2) years, see attached ATC.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS (continued)
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities:
The existing 4.0 mgd WWTP consists of a mechanical influent bar
screen, mechanical grit removal, influent flow monitoring, a 6
million gallon capacity influent equalization basin with six (6)
floating aerators, influent pump station, flow splitter box, a 2 mgd
extended aeration facility with secondary clarification,
chlorination, a 2 mgd oxidation ditch with secondary clarification,
effluent flow measurement, chlorination, a 150,000 and a 650,000
gallon aerobic digester, sludge drying beds and a common outfall
forcemain with effluent flow monitoring and cascade aeration prior
to discharge into receiving stream.
f. Please provide a description of proposed wastewater treatment facilities:
None proposed.
g. Possible toxic impacts to surface water: None known or expected.
h. Pretreatment Program (POTWs only):
In development Approved
Should be required Not needed X
2. Residuals handling and utilization/disposal scheme: Land application at the
Laurinburg-Maxton Airport on DWQ permitted site.
a. If residuals are being land applied, please specify DWQ Permit No. WQ0002526
Residual Contractor: City of Laurinburg
Telephone No:
b. Residuals stabilization: PSRP X PFRP Other
c. Landfill:
d. Other disposal/utilization scheme (specify):
3. Treatment plant classification (completed rating sheet attached): Grawhen
complete)

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS (continued)
4. SIC Code(s): 4952
Wastewater Code of actual wastewater, not particular facilities, i.e., non -contact cooling
water discharge from a metal plating company would be 14, not 56.:
Primary 01 Secondary
Main Treatment Unit Code: 05 00 03
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)?
FmHA loans were involved in the past.
2. Special monitoring or limitations requests:
As deemed necessary to most Lumber River Management Plan.
3. Important SOC, JOC, or Compliance Schedule dates (please indicate): N/A
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation:
Has the facility evaluated all of the non -discharge options available.
Please provide regional perspective for each option evaluated.
Spray Irrigation: N/A
Connection to Regional Sewer System: N/A
Subsurface: N/A
Other disposal options: N/A
5. Other Special Items: N/A

PART IV - EVALUATION AND RECOMMENDATIONS
The FRO recommends renewal of the existing NPDES Permit No. NC0020656 for the City of
Laurinburg Leith Creek WWTP in accordance with the Lumber River Basin Management
Strategy.
Signature of Report Preparer
Water Quality Regional Supervisor
Date

99 i�l�nird �trnu�,y igy.�t
&I4J or Cauriouv$
May 25, 1999
N.C. Department of Environment
And Natural Resources
Division of Water Quality-NPDES
P.O. Box 29535
Raleigh, N.C. 27626-0535
L IT0
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OFFICE OF DIRECTOR
WATER & WASTEWATER PLANT
JUN - 2 1999
1
OENR - WATER QUALITY
POINT SOURCE BRANCH
Re: Renewal of NPDES Permit #NC0020656
Dear Sir:
Since the last permit was issued the changes made to our facility include the following:
650,000 Gallons Digester
2 Transfer Pumps
3 Blowers for diffused aeration
3 New Wemco Pumps in our recirculation pump
station on our extended aeration side of our facility.
Also added was Equalization pumping at our influent pump station which pumps to a 6 million
gallon (MG) equalization (EQ) basin when the flows exceeds 5 MG per day. When excess flows
are added to the EQ basin, we have a manual valve that we open to drain the EQ basin. This unit
was installed to alleviate 1&I flows.
Enclosed we are submitting the renewal application for NPDES #NC0020656 for Leiths Creek
Wastewater Treatment Plant.
Please contact our office at [phone] if you have any questions concerning this matter.
Sincerely,
Robert A. Ellis
Director
603 LAUCHWOOD DRIVE P.O. BOX 249 LAURINBURG, N.C. 28353 910 / 277-0214

. Sludge Management Plan
City of Laurinburg Leith Creek Wastewater Treatment Plant
NPDES Permit # NC0020656
The City of Laurinburg's Sludge Management Plan for the Leith Creek Wastewater Treatment
Plant consist of storing the residuals in the digester and then applying the liquid to the approved
sites located at the Laurinburg-Maxton Airport by contract haulers. We also utilize seven of the
eight drying beds we have at our facility, with the eighth bed being used for storage. When their
is enough stored we contract with the hauler and land apply the dry sludge at our dedicated sites
at Laurinburg-Maxton Airport.
Included in our sludge is a small amount of sludge generated by the Libby -Owen -Ford
Wastewater Plant, that is put directly into one of our digesters, after further digestion this sludge
is either dried on a drying bed or land applied in liquid form along with Laurinburg's sludge.
Signature
Director

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