NC0021881_Wasteload Allocation_19920925

NPDES DOCYNENT :SCANNING COVER SHEET
NC0021881
Lake Waccamaw WWTP
NPDES Permit:
Document Type:
Permit Issuance
(.....W...fteloadas
Allocation..
FCt-F�Ti^D'4f ':•
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
September 25, 1992
Thi6c document is printed on reuse paper - ignore any
content on the resrerse side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0021881
PERMITTEE NAME: Town of Lake Waccamaw
FACILITY NAME: Town of Lake Waccamaw
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.40 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
refer: Basinwide / Streamline WLA file
at front of subbasin
RECEIVING STREAM: an unnamed tributary to Bogue Swamp
Class: C-Swamp
Sub -Basin: 03-07-56
Reference USGS Quad: Lake Waccamaw West (please attach)
County: Columbus
Regional Office: Wilmington Regional Office
Previous Exp. Date: 6/30/92 Treatment Plant Class: II
Classification changes within three miles:
no change
Requested by:
Prepared by:
Reviewed by:
2;. 5
Charles Lowe
3 3 (s/0
Date: 6/9/92
Date: Gli/e0 Z.
Date:
Modeler
Date Rec.
#
S
(ito k z
(Dgell
Drainage Area (mi2 ) Avg. Streamflow (cfs): ' rJ.
7Q10 (cfs) (0 Winter 7Q10 (cfs) v 30Q2 (cfs) o
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters D.O. Tempea.Aruge, fir. col-iForzAt. cvnipvcTlvlry
Upstream
Downstream
"This
Removal of the discharge will be required if a more environmentally sand alternative is
available. An engineering report evaluating alternatives to discharge is due 180 days
prior to permit expiration along with the permit renewal application. As part of the
report, the cost of constructing a treatment facility to meet limits of 5 mg/I BOD5, 2
mg/I NH3N, 6 mg/I dissolved oxygen and 17 ug/I chlorine must also be included if there
are no alternatives to a surface water discharge. Upon review of the results of the
engineering report, the Division may reopen and modify this NPDES permit to require
removal of the discharge, modified treatment designs, and/or revised effluent
limitations within a specified time schedule."
Y
Location AT 1-CT Loot UrsTR-G4M
Location AT LAST 300 -Po (AN STRE414
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
1l
10
NH3-N (mg/1)
4
D.O. (mg/1)
Co
Co
TSS (mg/1)
3 0
30
F. Col. (/100 ml)
Zoo
Zo 0
pH (SU)
J�lo�e /L1eLdeva ct) per -/7 9? M./2( '
)'CUT

92.6 31g 30
NPDES PRETREATMENT INFORMATION REQUEST FORM
REQUESTER: lNoL a
FACILITY NAME: ILA) A) off/ JDES NO. NC00 !11
DATE: ' /JL/ 7V REGION: Wig ✓1i, ✓ i�nl
PERMIT CO
VI
ITIONS COVERING PRETREATMENT
This facility has no SIUsfland should not have pretreatment language.
This facility should and/Or is developing a pretreatment program.
Pl yytrvitfollowing conditions:
MAR 1 6 1992
'rNTdi'2'itRisBntly implementing a
Please include the folio ng conditions:
Program Development
Phase I due / /
Phase II due _Li__
Additional Conditions
(attached)
pretreatment program.
Program Ltrpleinentation
Additional Conditions
(attached)
IGNIFICANT INDUSTRIAL USERS' (SIUs) CONTRIBUTIONS
SIU FLOW - TOTAL:
- COMPOSITION:
TEXTILE:
METAL FINISHING:
OTHER:
MGD
MGD
MGD
MGD
MGD
MGM
MGD
HEADWORKS REVIEW
PASS
PARAMETER !THROUGH
! AVABLE
Cd
Cr
Cu
Ni
Pb
Zn
CN
Phenol
Other
DA1=LY LOAD IN LBS/DAY ACTUAL
DOMESTIC PERMI1 1.7.) INDUSTRIAL % REMOVAL
1
RECEIVED: / / REVIEWED BY: !
itEriuR JED : /.:N/

f �•
Grit
Inftuent Chamber
Bypo►1.
ti
Cat
Aeration \
Basin Aerators
\\ \detwelt
•t *a
``, '\ r 1
---� ) Ctar•IPIer
1 x
r A.
-3 •/ ru
Ctarif ier
r �.., Efr ern*
r 1-7
First
Potishino
Pond
Return
Sludge
Line
Clarifier �"
Influent
�.f 1 )
Jf
Pond
PYPass
Schematic of Wastewater Flow
Lake Waccamaw WWTP
Lake Waccamaw, NC 28450
--Discharge Serial Nr: 001
Drying Fed
#f
Drying At-cl
# 2
Pond
Effluent
Aerator
Second
Poli=hin9
Pond
Chlorine
Contact
Chamber
Effluent
Vmr
Chamber
Effluent
0.1

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Lake Waccamaw WWTP
NC0021881
Domestic - 100%
Existing
Renewal
UT Bogue Sw
C-Sw
030756
Columbus
WiRO
C. Lowe
6/9/92
J24SE
Request # 6977
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
<0.1
0.0
0.0
<0.1
0.0
100.0
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility discharges to stream with 7Q10/30Q2 = O. Removal of discharge is recommended if a
more environmentally sound alternative is available at an economically reasonable cost. An
engineering report evaluating alternatives to discharge is due 180 days prior to permit expiration
along with the permit renewal application. As part of the report, the cost of constructing a
treatment plant at the discharge point to meet limits of 5 mg/I BOD5, 1 mg/1 NH3-N, 6 mg/1 DO
and 17 µg/1 residual chlorine should also be included if there are no feasible alternatives to a
surface discharge. Upon review of the results of the engineering report, the Division retains the
right to reopen and modify this NPDES permit to require removal of the discharge or to revise the
permit limitations within a specified time schedule. [ref. 6/23/92 memo from SWT]
The facility has had no violations in the past year. Instream monitoring data showed instances of
DO < 5.0 up and downstream. Due to the swamp characteristics of the stream this may not be
attributable to the discharge (TSB is unsure of their exact instream monitoring locations).
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment: Date:
Regional Supervisor: 'C le —
Permits & Engineering:
RETURN TO TECHNICAL SERVICES BY:
v r- Date: B - ZG — q ?
Date: 4l jl qZ--
SEP 1 7 1992
:9!!;1 i-c•.
•

Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine
Oil & Grease (mg/1):
2
PARAMETERS
Monthly Average
Summer Winter WQ or EL
0.4 0.4
11 10
2 4
6 6
30 30
1000 1000
6-9 6-9
Monthly Average
Summer
0.4
11
2
6
30
200
6-9
Limits Changes Due To:
Change in 7Q10 data
New regulations/standards
New procedures (zero flow policy)
New facility information
Change in stream classification
Other
Winter
0.4
10
4
6
30
200
6-9
WQorEL
WQ
WQ
WQ
Parameter(s) Affected
Fecal coliform
new language for zero flow policy
per 6/23/92 memo from SWT; no
change in existing limits (except Fecal
coli limit)
_X_ Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: at least 100 ft. upstream
Downstream Location: at least 300 ft downstream
Parameters: DO, temperature, Fecal coliform, conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) N (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? N (Y or N) If yes, explain with attachments.

.0 ±
C - S4
1007,
Wficr-A, 41A44 w imrP
1Qto5 r a
l3oPs = 11 1 p
n11c/3 -/,l 2 /¢
f E6f1c Cat,/
yog2 = 1
,/FT,c/Jcc5' OF D.0. L 5 DOPVAISTP-44/r
?� , / ./oT C.: ?T ' R! 'Pr- . G_ 7 , i rS-'/!RL'4 _ A,,?y,, f
- /✓O 7!/ 644T
- r(*(r-!r i !`5 AtC;l`/ r✓:) Lf'J r C/ 77 4 /Z F1L/sL/,AJ
7 r r- 17 !" r y f1 / ! %,
Hi% 4/ 1-- La's
dil;t2 rr,: 0i✓ 6, <(. 4,7)' J (I,/7VE SDG(P 9 %I S�v5 � J�o Ste. To()n/ fMs
o A grvt1-7-- ? 4V? .
—TN T2-rc L1% �"1GF :fro /1c(ocr/,-Erb 7 (flF% T/% L/Nl(i5 0 7,
/7.s - 7/ IJi'? .4) - 173 A.<1,74
- /J 1 -06f3 Ftm'J / TC (6.73/`I z - 5 '[ 7/9-,.(9)

STREAM DATA
INSTREAM SELF -MONITORING DATA
MONTHLY AVERAGES
Discharger: I;Jir'
Receiving Stream:
Upstream Location:
1
DATE TEMP
Dec-91
Nov-91
Oct-91
Sep-91
Aug-91
Jul-91
Jun-9`11.
May-91_
Apr-9'f-
Mar-9,,
Feb-91-
Jan-91—
Dec-90
Nov-90
Oct-9d
Sep-90
Aug-90
Jul-90
Jun-90
May-9Q
Apr-90
Mar-90
Feb-90
Jan-90
Dec-89
Nov-89
Oct-89
Sep-89
Aug-89
Jul-89
Jun-89
May-89
Apr-89
Mar-89
Feb-89
Jan-89
Permit No.
Sub -basin:
Downstream Location:
D.O. COND. FECAL COLT.
24.3(2a)
77.8 22)
J3. (1
(ti.3(17)
'7.6(1z)
5(1 7
1, 6 (23 )
43.1 (G. Si
7.4-i 5•�
z(3• s;
i(55)
88^
2� )
32(�z
7G(Z 4)
TEAS
D.O.
COND.
FECAL CO
2. )
i,(((o
r6l.5: ?-1-)
q. 9
1-7(7r)
(a• 6(4-)
(5 .)
/466)
34(7;
r'.¢(lb)
9.e O
2 1
?.3('/)
7.5(- S.
' "(V
i0. 906)
' .9(4 5
a�9 i
/2 ./(/(,)
?. 3 ('I 5.
57ot)
/f'.5(v;
..G 4•.
i,G(7:
7-5(zg)
fI• 2.(6,.
FIZZ)
Page 1

N !-0° 73( f
C'ry 7 -91
0. a j7t ,4770AJ w/rem - rLKc

DIVISION OF ENVIRONMENTAL MANAGEMENT
MEMORANDUM
Date: September 26, 1989
To:
From:
Through:
Subject:
Coy Batten
Construction -Grants Section
Donald Safrit_`L-c-- -
Water Quality Regional Supervisor
Orig,nal S!gled By
Preston Howard NtltTnN HOWARD,
Regional Supervisor
Wilmington Regional Office
Town of Lake Waccamaw
Hlgh Unit Cost Grant Application
Sewer Collection System
Columbus County
•
(t . ? 1 ; i 1
The Town of Lake Waccamaw has recently submitted an
application for funds to assist replacement of an existing
force main serving the town's main lift station.
The .own has experienced many sewage overflows in the past
several years and based upon overflows during the past six (6)
months, it appears the problem is getting worse. Overflows from
failures in the force main have impacted the canal surrounding
the lake and Lake Waccamaw itself. The failures of the force
main appear to be attributed to very poor base support in the
trenches of which the force main was placed. The existing force
main was placed into dredged material from the canal and due to
settling, cracks and splits occur in the force main. Discharges
of raw sewage into the canal and lake have contributed to the
increased rate of eutrophication of Lake Waccamaw and the
surrounding canal.
The Wilmington Regional Office has reviewed the proposal
from Henry Von Olsen and Associates and agree that the best
long-term solution to eliminate impacts to Lake Waccamaw is to
redirect the force main away from the canal and Lake Waccamaw.
It is therefore recommended that the Town of Lake Waccamaw's
High Unit Cost Grant application be given expedient review and
action to prevent future impacts to the surface waters of the
state.
If we can provide any additional information or assistance,
please do, not hesitate to call
DS:WAC.SEP
cc: Steve__ Tedder
Bob'�'Janeson
Alan Wahab

arm/
i ' MEMORANDUM
DIVISION OF ENVIRONMENTAL MANAGEMENT
February 5,_1988_._
Chuck Wakild, Supervisor
-'Wilmington Regional Field Office
Steve Tedder, Acting Chief
Water Quality Section
Trevor Clements, Supervisor
Technical Support Unit
Lake Waccamaw Instream Assessment
NPDES No. NC0021881
The Town of Lake Waccamaw is requesting permission to add 5900
gpd of domes-
,;,- tic wastewater to their treatment facility under a Judicial Order. It does n
yJr.. not
appear that an instream assessment is needed for a decision in this matter.
town's self -monitoring data indicate that the WWTP is operating well within The
their NPDES effluent limitations.
�, Apparently, the Order is needed to address
}}.collection system spills and overflow violations. Technical Support
'; ,� believe that. the additional 5900 does not
waters beyond .the gpd will significantly impact the receivin
waters current effluent impacts. } ;, n g
_,f,,.... t ,i.y . .. `. +.. .
Please let me know if further clarification in this mat
ter is needed.
- 'George Everett
Kent; Wiggins
—

•
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♦ •�
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..� •. .•�gi.,d.•►�t'A• ..",-• :.,:.•..+r..`,-•,.•J.: i_ -R-JS' .+s iS... w••:n. �....' ,•..S'' `'•i • - �,.ai�y.•.
:_t .��j;� �►•�-�� .f •'J.L•�f f•. =art 't. a:' .ice, a�:� ,. . o-re .%b'. }+�
..4„- .if�!•`ar.�,f�.if ,•• :;:.):/. • + }a. J. •1:..41.•jr.,..e .Zt-t S.•!i• -.
= { ,•r r r.ter ♦ s • i. if�r-:. • a
t� Regue�st" Form . for: •,In -stream Assessment for'°%7H ^ .t -"' ,- '
•
. • •
NAME OF FACILITY IAME lLicci,*,,,&d
COUNTY CO), ,b 44-4 REGION LA. /Q_0 . DESIGN FLOW 0 . yQ 71.11
V
RECEIVING STREAM ( _ :77 ' BDy u„,_ Seda 8,
11
P
BACKGROUND DATA :
SUBBASIN
A. Why is SOC needed? (Facility is out of compliance with which
effluent limits?)
B. • History of SOC ,requests:
. Monthly Average waste flow
prior to any SOC •
.Time period averaged
2.,Previously approved SOC•s:
2.2 s, g 00 . p1
,z
•
- 1-
Date: flow:
Date:
flow:
total of previously approved SOC flow:
3. Flows lost from plant flow:
•(facilities that have gone
off line)
4. Current SOC flow:
_request ,qao
5. Total plant flow post-SOC
(su,m of original flow and
SOC flow minus losses) flow:.239, lab mqd
----6�r' "Ie-this-din accurate -flow balance .for plant? Why/why not?_'
1988
WATER QUA Ii, •y
ECTi 0N
mgd.
'mgd
mgd
mqd .�
Rear,-
acina.
FFB g
•r•,� �:.ijrR�
414,_;
;;r' s a ter. •� '�.. .. ; ..s,�:

C. Please
•
•
}
j • .
attach DMR summary for past year for all permitted parame-
ters. If possible, include reports from previous years•if -
facility has been under SOC for more than a year.
• CURRENT SOC REQUEST : S-ei CSQ �pi
A. Request is for domestic or industrial waste? If it is a combin-
ation, please specify percentages.
w-r%,cs 00 x
B. What type of industry? Please attach any pertinent data.
C. The reg
fecal coliform
• pH
other parameters
on proposes the
following
SOC limits:
mg/1
mg/1
DO mg/1
TSS mg/1
#/100m1
SU. •
eves /recto
Vii,12 4460.1s - wof 1 r Au2 e.
j
D. What is the basis for these limits? j1IJ7