NC0046728_Wasteload Allocation_19881220

NPDES DOCUHENT !;CANNIN` COVER !MEET
NPDES Permit:
NC0046728
Mooresville / Rocky River WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
December 20, 1988
This document is printed on reuse paper - ignore any
content on the relverse side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCOO ` ?ZS'
Th. Lon d-e g 60 /-4_5 vi I(e
FACILITY NAME•
Facility Status:
(circle ore)
Permit Status:
(circle one)
Major L/
Pipe No•
RENEIAIAL MODFICATION uNPERiarrED NEW
Minor,
(.7b
Design Capacity (MGD)• 5 Z
Domestic (X of Flow)-
Industrial (X of Flow): Pa
Comments:
RECEIVING STREAM: bye
Class
Sub -Basin- 0 3 -o i - r/
Reference USGS Quad: C 15 5 (please attach)
County -
Regional Office: As Fa M; Ra Wa Wi WS
(circle ens)
Requested By:
;(,,E4
Prepared By: Sr�'� O• (-J_
Date -
Date:
Reviewed By: V - -- ���`"; X Date:
Modeler
Date Rec.
*
Drainage Area (mil)
Avg. Streamflow (cfs)• 5.00
7Q10 (cfs) L.,70 Winter 7Q10 (cfs) Q.'17 30Q2 (cfs)
Toxicity Limits: IWC (circle one) Acute / Oronlc)
Instream Monitoring:
Parameters km(' ronrfvrhvi f,l fern/ rol`rfl�rm BOF� IV K3
Upstream Y Location V2 m,.. above d ,5ef'a eje
Downstream
Location ±
a 2N•,-0
Locahon 2: se ,3oi.I
Frec�uen 3 fame per weed In Win?'
1 (lonlh(u �h wnfe�
Effluent
Characteristics
►Y\o. Ai v-33-
a„ icy mci��c
BOD5 (mg/1)
2k
1
NHa N (mg/1)
13
D.O. (mg/I)
5
TSS (mg/I)
30
F. Col. (/l00ml)
(000
pH (SU)
0_q
Codm.um C
2
,5I,0
C:Y-womorn ( IJ)
_
,n2_ •
NicKel (1i)
53
Lead d (A4 .C)
_ 2(i
Comments- Kecnrrypnend tCPluenenomtony5 far copped z.�nc� and cola'.
t\le.t.) 1.&e1 C mock( nnd;cofe.5 exrahrnholds will nnf fed krfer dunn3 lac
-Cho. 'Alen fylcoremife eupands j hP. redureri to 1 mrl,(2 NU
m.yy1Q-tO. 2ecommend re.operV a►lowinyy fix more. 6�^n e+ t4Lb bpO .�edo nq!1
confin
6lortiifdrtttl• Pllooreortlic- avrenal operahnrj be.lot pe i lLmIt ,should confantoc in ant 1-

Fecal
Receiving
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Facility Name:
NPDES No.:
Type of Waste:
Status:
Stream:
DECRecelvzo
~� 15 q _ ReuestmNo.:
4891
/
� .
WASTB-OA� ALLOC PPROVAL FOR�
. _~~.�. _-
Tot -mf'-Mooresvil
NC0046728'' `
80% Industrial
Exi
Dye ����ff
C
030701,
Iredej.1
LuliHarris
9/30/88
E15SE
,
le
20%
Do�oestic
'4891
.... ..... .v�' .... ..... .... ....
--
} Q
° � 1OQ
��m��
POEM.,
Drainage area:
Summer 7010:
Winter 7Q10:
Average flow:
30Q2:
4.800 sq .oi
0.50 cfs
0.90 cfs
5.00 cfs
cfs
�
�
RECOMMENDED EFFLUENT LIMITS -------------------------
Wasteflow (mgd):
8OD5 (mg/1):
NH3N (mg/l):
DO (mg/1):
TSS (mg/1):
coliform (0/100ml):
pH (su):
Mo. Avg.
5.20
24
13
5
30
1000
6-9
Cadmium (ug/l):
Chromium (ug/l):
Nickel (ug/l):
Lead (ug/l>:
Cyanide (ug/l):
Toxicity: Chronic Quarterly (see attached)
Daily Max
2�_C
52 '-
53-_~
20
5'1;
---------------------------- MONITORING ------------------------------
Upstream (Y/N): Y Location: 1/2 mi. above discharge
Downstream (Y/N): Location in SR 2420
Location 2: SR 1394
----------------------------- COMMENTS -------------------------------
Recommend instream monitoring for temperature, DO, conductivity, fecal
coliform, 8OD5, and NH3. Monitoring should be 3 times per week during
summer and monthly during winter. Recommend effluent monitoring for
copper, zinc, and color. New Level C model indicates that existing
limits will not protect water quality during low flow conditions'
When Mooresville increases design flow, limits may be reduced to
7 mg/1 BOD5, 2 mg/1 NH3, 6 mg/1 DO. Mooresville currently operating
well below permit limits, and should try to cuntinue meeting current
ef o ons 'Q�^-~~°�~Jy ,���-�~ q, "^�" 0-`�°���
_ .....................................
Recommended by:
��
Reviewed by �� L�_�
Tech Support Supervisur: _
-j
Regional Supervisor:
Permits & Engineering: ____
'L Z(AM 0
Date:
Date: "
Date:
Date:
.iAN �7 jQAq
RETURN TO TECHNICAL SERVICES BY: '`

71:5 repo ces 11/7/ Wi4
imp/ems+ YtecV aomjnl(a nc a 4ti-fitafe
Facility Name /'(oa iCvri & Whiff Permit # NGco vg
rer,09i+- 11-eincio Tim , ,i Ord e.K
CHRONIC TOXICITY TESTING REQUIREMENT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity in any two consecutive toxicity tests,
using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised *February 1987) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 94 % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterkv monitoring using this procedure to establish
compliance with the permit condition. The first test will be erfo ed after thirty days from
issuance of this permit during the months of I br/lam Aogu�d- Nor". Effluent
sampling for this testing shall be performed at the NP S permitted final effluent discharge below
all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter
code TGP3B. Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this
monthly test requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
7Q10 cfs
Permited Flow 5..2. MGD
IWC% 74•/6
Basin & Sub -basin ''A.) /l
Receiving Stream Dye- ervvAdi
County 7redell Date ia/gflg
**Chronic Toxicity (Ceriodaphnia) P/F at `4 %, AS 4 tcl Nov, See Part 3, Condition i.
Recommended by:

Request No.: 4891
------------------~ WA8TELOAD ALLOCATION APPROVAL FORM
Facilit-v Name: Wame: Town of Mooresville
NPDE8 No.: NC0046728
Type of Waste: 80% Industrial, 20% Domestic
Status: Existing
Receiving Stream: Dye Branch
Classification: C
Subbasin: 030711 Drainage area: 4.800 sq mi
County: Iredell Summer 7010: 0.50 cfs
Regional Office: MRO Winter 7010: 0.90 cfs
� Requestor: Lula Harris Average flow: 5.00 cfs
Date of Request: 9/80/88 30Q2o cfs
Quad: E15SE
-------- � ---- RECOMMENDED EFFLUENT LIMITS
Mo. Avg. Mo. Avg.
Summer Winter
Wasteflow (mgd>: 5.20 5.20
BQD5 (mg/l): 7 14
NH8N (mg/l): 2 4
DO (mg/l): 6 6
T8S (mg/l): 30 30
Fecal coliform (#/100ml): 1000 1000
pH (su): 6-9 6-9
Cadmium (ug/l):
Chromium (ug/l):
Nickel (ug/l}:
Lead (ug/1):
Cyanide (ug/l):
Daily Max
2.10
52.30
53.10
26.20
5.30
Toxicity: Chronic Quarterly
MONITORING
Upstream (Y/N): Y Location:
Downstream (Y/N): Y Location 1:
Location 2:
l
1/2 mi. above discharge \n7��
1/2 mi. below discharge~~��U�mn- ~
SR 1394
Limits based on new Level C model. Recommend instream monitoring for
temperature, DO, conductivity, 'fecal coliform, 1-".01-15, and NH3.
Monitoring should be 3 times per week during summer and monthly
during w1nter. Recommend effluent monitoring for copper and zinc.
-------------------- -----�� -n�*�
Recommended by: ' ��� Date: U|_!0L�
_
Reviewed by
Tech Support Supervisor: Date:
Fhegional Supervisor:
Permits & Engineering:
Date:
Date:
_
RETURN TO TECHNICAL SERVICES BY:
'__

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Facility rl'boreOv1 I wrp Wasteflow (MGD)
r.Winter (circle one).
3
NH3-N (mg/1)
Potential effluent limit combinations:
B005 NH3.N
5 3
1
.1
__ •
- -. Comments :_ -

.5'lzy/eF
o oP IYioo,esvtl)e.
Q30711
mrza- S =Acp
www
2 2y,2o
ma-8
.9 mitt.) hunt mPQ-u * ,Y1RQ• -
Q. goo, i -7 m2a - 4
fpezch1; mpo-ezvitie WwrP to cvnPlucricc o' sip Z✓Q,xh (xici QocKti (1 vcr m;
eoth2. C nfuencc. to ,R 0420 m'

PRETREATMENT HEADWORKS REVIEW
Discharger: Mooresville WWTP 10/12/88
Receiving stream: Dye Branch
Stream Class: C
USGS Zone: 1
7Q10: 0.500 cfs
Design flow: 5.200 mgd
Actual flow: 2.95 mgd
Percent industrial: 80.0 %
IWC: 94.2 %
Allowable
Pollutant Standard/AL Removal Load (a)
(Mg/1) Eff' (lbs/day)
_________ ___________ _______ ------
Cadmium 0.002 S 92% 0.68 0.010
Chromium 0.05 S 76% 5.69 0.120
Copper 0.015 AL 82% 2.28 0.310
Nickel 0.05 S 32% 2.01 0.020
Lead 0.025 S 81% 3.59 0.100
Zinc 0'05 AL 71% 4.71 0.020
Cyanide 0.005 S 59% 0.33 0.100
Mercury 0.0002 S 86% 0.04
Silver 0.01 AL 94% 4'55
Total USGS Predicted Allowable
Influent Background Effluent Effluent
Load Reserve Conc Conc (b) Conc (c)
(lbs/day) (lbs/day) (mg/1) (mg/1) (Mg/1)
______ --------
Cadmium 0.62 0.06 0.0020 > 0'0021
Chromium 1.09 4.60 0.018 0.0106 > 0.0523
Copper (A4 4.59 -2.31 0.004 0.0336 > 0.O157
Nickel 1.34 0.67 0.0370 > 0.0531
Lead 1.61 1.98 0.005 0.0124 > 0.0262
Zinc L4L) 6.80 2.09 '0.012 0.0801 > 0.0524
Cyanide 0.10 0.23 0.0017 > 0.0053
Mercury 0.00 0.04 0.0003 0'0000 0.0002
Silver 0.00 4.55 0.0000 0.0106
Actual
Domestic
Load
(lbs/day)
Actual
Industrial
Load
(lbs/day)
_________
0.610
0.970
4.280
1.320
1'510
6.780

irboreovi Ile I.)k.)r�
,iaA,
7/)
Ac
, cue / ,r3 lark) 'ten de/et:mac _ _caocedrahons& i fig
Flow . oZ c 6
-__-ems - - /?, 5Z
Neap SIS 7— qs 623 _ A yi3
_af _ _ .
tee [C oohs_
C = _ (.6-T ( � 5) t 6.t _' q' .°f o

CA
U1
0
CO
Faci l i ty Do(c,Dt i, . LatyrP Wasteflow (MGD) �, z
Summer/Winter (circle one)
1
1
1
-
■
r nurair—E:
ifid dirl
• .
!up P
4
�S
11
�i
le Ell
EMI
it i-- Hi-
N � g
NH3-N (mg/1)
Potential effluent limit combinations:
60D5 NH3.N
i0
tki z
�o
2
- -Come.- -

INSTREAM SELF -MONITORING DATA
MONTHLY AVERAGES
Discharger: fl'}of 51/0E. UlOn9 Permit No.: NC00'V17Z5'
Receiving Stream : De,inn -J Sub -basin : •307/j
Upstream Location; lb,mi (move. -i -I ,Je Downstream Location t in; hewdi3dr e_
v
Upstream Downstream
DATE TEMP D.O. BOD5 COND. TEMP D.O. BOD5 COND
}EC-88 40
NOV-88
CT-88
SSSEP-88
AUG-88
JUL-88
JUN-88 '5 1 26 --/.5
MAY-88 17 —4 22 •7q
APR-88 14 Q,3 1q s,tt
MAR-88 _11_..____ 10.0 I q.3
FEB-88 4 ID.3 15- Q.1
JAN-88 7 tn.7 12 _cif__
DEC-87 0 10.2. 15 4.z
NOV-87 I4 q,2 20 %9
=OCT-87 IO q.2 20 7 _
.
SEP-87 21 --?.� 7..0
AUK-87 a3_ 7. 27 (a,?
JUL-87 ,` 3 27 La
JUN-87 2Z 7.J 2ce lt.
MAY-87 .2�(_ 1 .24 7, z.
APR-87 lb_ _.oi a SL 1
MAR-87 13 10.c i-7
EB-87 q 10.7 17 4.3
AN -87 to 10E ILQ 4.CE.
DEC-86 It I0.3 10 Qd
NOV-86 1\1_ qb 7,$
OCT-86 _17 9,? -1
SEP-86 61 T,(, 07.5 7.7
AUG-86 6)3 I.0 -7 3
JUL-86 a5 7.9 c97 7,0
ti:UN-86 cO3 s3•'4 ca.v `7.Ix
MAY- 8 6
APR-86
M R-86
FEB-86
J AN- 8 6
DEC.-85
NOV-85
OCT-85
SEP-85
AUG-85
JUL-85
JUN-85
MAY-85
APR-85
MAR-85
FEB-85
JAN-85