NC0004961_Waste Load Allocation_19890428

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCOO 04-14f
FACILITY NAME: &,J& ea- `
Facility Status: CE=M� PROPOSED
(circle one)
Permit Status: 013111 '.ATION NEW
(circle one)
MaJor Ninor,-
Pipe No:
6 0 2 --
Design .Capacity (MGD):9�
v,
Domestic M of Flow): 0•
Industrial (% of Flow): 9
Comments:
RECEIVING STREAM: C�
Class-. W S f g
Sub -Basin: 6 3 —OR
Reference USGS Quad: �-� S� (please attach)
County: �r a span
Regional Office: As Fa Mo . Re Wa WI WS
(circle one)
Requested By: / %� `� Date:
DDPrepared By: Date: 5
Reviewed By: Date: 6-4 1 /S5
Modeler
Date Rec.
�
�C.t�
Z z4 ��
51��i •, .,
Drainage Area (m?) Avg. Streamflow (cfs): -Z2�&
-QI4-(cfs) '�;() Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % (circle one) Acute / hronic
Instream Monitoring:
Parameters
Upstream Location
Downstream . Location
A A
Effluent
Characteristics
&4 q _g/U
5✓
2a
=_ d4 (In g/l)
l
c 2 el mg/o
L
TSS (mg/1)d
Comments:
���t�l'� `C24 U `'J'e [X ;..s��- e.-{,'4-�'� L�,�.l�.-•-• (,moi o� � per`!'
1 Sc
0 rte-_.— (O

RETURN TO TECHNICAL SERVICES BY
Request No. :5149
--------------------- WASTELOAD ALLOCATION APPROVAL FORM ---------------------
Permit Number
NC0004961
basis
Facility Name
: DUKE POWER
RIVERBEND: 002
monitor
wla req
Type of Waste
ASH BASIN,
DOMESTIC, STORMWATER
20
bpt
Status
EXIST/REN
1
1
bat
Receiving Stream
CATAWBA RIVER
1
1
Stream Class
WS -III, B
(mg/1):
30
100
Subbasin
030833
(mg/1):
0.48
County
Regional Office
GASTON�L
MRO
Drainage Area
Average Flow
(sq mi)
(cfs)
1800
2700
Requestor
TJX(
LULA HARRIS
Summer 7Q10
(cfs)
8O(1) »s�
Date of Request
2/28/89
YVIIZLGI ''^'�'
(cfs)
3116.)
Quad
F15SW
30Q2
(cfs) .
------------------------- RECOMMENDED EFFLUENT LIMITS -------------------------
--------------------------------- MONITORING -----------------------
Upstream (YIN): N Location:
Downstream (YIN): N Location:
---------------------------------- COMMENTS ------------------
----------------
BY LETTER AND AMENDMENT TO CURRENT PERMIT, RESULTS OF A STUDY TO ASSESS
IMPACT OF SURFACE AND GROUNDWATER INPUTS WAS REQUIRED TO BE SUBMITTED 180 DAYS
PRIOR TO EXPIRATION. (N"4(" Ma- (e-'kw-ZC'Q U..,;, +"\Z --tb sac )
--------------------------------------------------------------------------------
Recommended by l Date tj &6��4
Reviewed by:
Tech. Support Supervisor ,u„� Date iS
Regional Supervisord -e" s- � Date 5 8 9
Permits & Engineering Date S
basis
Wasteflow
(mgd):
5.98
monitor
wla req
oil & grease
(mg/1):
15
20
bpt
Iron
(mg/1):
1
1
bat
Copper
(mg/1):
1
1
bat
TSS
(mg/1):
30
100
bpt
Arsenic
(mg/1):
0.48
wq
pH
(SU):
6-9
6-9
bpt/wq
toxicity
wq attach
--------------------------------- MONITORING -----------------------
Upstream (YIN): N Location:
Downstream (YIN): N Location:
---------------------------------- COMMENTS ------------------
----------------
BY LETTER AND AMENDMENT TO CURRENT PERMIT, RESULTS OF A STUDY TO ASSESS
IMPACT OF SURFACE AND GROUNDWATER INPUTS WAS REQUIRED TO BE SUBMITTED 180 DAYS
PRIOR TO EXPIRATION. (N"4(" Ma- (e-'kw-ZC'Q U..,;, +"\Z --tb sac )
--------------------------------------------------------------------------------
Recommended by l Date tj &6��4
Reviewed by:
Tech. Support Supervisor ,u„� Date iS
Regional Supervisord -e" s- � Date 5 8 9
Permits & Engineering Date S

Facility Name Permit # L& 2, �{�fo oa
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 t o % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterly monitoring using this procedure to establish
compliance with the permit condition. The first test will be performed after thirty days from
issuance of this permit during the months of � �L Air, . Effluent
sampling for this testing shall be performed at the NPDES permitted final e fluent 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 'ZD cfs
Permited Flow �, 9 �� MGD Recommended by:
IWC% to
Basin & Sub -basin 03O s >3
Receiving Stream d�—
County Date 7ZD
**Chronic Toxicity (Ceriodaphnia) P/F at%,�� (, cam , See Part S , Condition .

—j 'CON'-INUED FROM PAGE 2 NC 0004961 Approval
pproval expnes 7.31 .88
V. IEFFLUENT CHARACTERISTICS
A. Sam instructions before proceeding — Complete one set of tables for each outfall —Annotate the outfall n
uipber TE: Tables V-A, V-8, and V-C am included on separate sheets numbered V•1 through V-8. In me space SOY•
De below to list any of the pollutants listed in Table 2c-3 of the instructions, which you know or have reason to believe is discharged or may b
discharged from arty F'pt.snsty Pollutant you list, briefly describe the reasons you believe it to be present and report any analytical data in you
pofs°"1on• (See sup Mental information for details.)
1. POLLUTANT _ 2. SOURCE
I. POLLUTANT 2. SOURCE
Asbestos Cleanup of containment
areas involved w/asbestos
stripping/handling operatio s
Discharge is to ash basin
(outfall 002)
Vl. POTENTIAL DISCHARGES NOT COVERED BY ANALYSIS
Is anypollut int listed in Item V-C a substance or a component of a substance which
byproduct) you currently use or manufacture as an int
❑ v[a
(""all such poliutan ta belo.)
UNo (Qo to Item VI-B)
or.
EPA Form 3510-2C (Rev. 2-85)
PAGE 3 OF 4 CONTINUE ON REVERSE

RIVERBEND STEAM STATION
NPDES DISCHARGE POINTS

PLEASE PRINT OR TYPE IN THE UNSHADED AREAS UNI Y. You fray report Some or all of
on EPA I.O. NIJM HER (C nP.I' from /!em 1 of F'nrnl 11
II115 I I11Urrflilllnn O SI)afal'! sllt'r:IS fllst. "le Sall"" (U(Ifl.l(J II11ll!il1l UI cuolpll:ling these pages.
SCE INSTRUCTIONS. RiVerbend Steam Station F""frA/)/1"rel'`/
NC 0004961 LIMB No 20400086
V. INTAKE AND EFFLUL NTCRARACTERISTICS h,':,rinlrCUlfur„`tPY�uvalr.prfrs'7J188
Asia Basin
TART- ---- -)1 ------ --- -- I fJ' fulfol!r12L7 Ou'1/ALL. Nr, i
A -You nlusl pruvllh: the resllils of at IErtst tine anrllysls fol every Iwllulrinl In_I _M
thls Ialllc. Cunll�ll:lc unc tilllf: lol each outfall. See instructions ---- ---- - - -- _ _ _ 002
- _ 2. EFFLUENT _ -- for additional details.
t. POLLUTANT a. MAXIMUM DAILY VALUE MAXIMt�M J0 pqV VALUE C LONG T M -- — — — — ---- 3• UNITS ---- ----_ .
- - (t/ anal(able) frYR ALOE (..prr•ifv if blank) 4. INTAKE (uprimlulJ I
h 1 _ f 41'01 a Nc•
NO. OF it LONG TERM
a 8iochermcal c°Nes^rrl'•^r'ON ANALYSES a.CONCEN-
Ox N3. 3 c. Nrl.w rruN — -RATION Irl b. NO
Oxygen Demand (�1 MAss b. MASS Irl w^t<s gNALV 1
IBCheOD) 94 CONI¢ re^TION
1,. cn@mical ------ _ 1 4
.
CS
3
OAVQen Dernand 8. 5 241 -- -- - mg/1 lb/day 31 1 I
ICOD) —
c. Total Organic ------------- 1 mg/1 lb/da1-
Carbon (Toe) 2.4 68 Y 5.8 53 1
rl- Total Suspended -------- ----------- 1 mg/.1 lb/day 1.9
Solids (TSS) .14.3 406 _. __ -------------------- --- --- 17 1
-- -- - — --- 12.0 341 5.5 15724
— —
Ammonia (aa N) ------ 24 mg/1 lb/day 7
<.05 c 1.42 ---- 64 1
VALUE --- _.___-----
I-
—_—_ -- _ 1 mg/1 lb/day .05
1 FIOw VALUE -- --------- .46
_ 3. 4 V A L U E ----_--_ --- 1
VALUE
'I. Temperature VALUE --'- - -- -- �----.____-1-7 11 _--_-
iunl/rr) - VALUE -----------------'-------- 52 MGD
NA V A L t, E - -- ---- -- --- 1. 1 52
P1 lemperature VAt-uE - - --------- aC 4
V A L l/ L ------'-- - -
Inu»L)ner) NA VAL_ut ---- ------ ------ -- - _ __ I
_ VALUE
MINIMUM IMAXIMUM - ---' __---__,- __ oC pHMINIMUM MAXIMUM —- -- II
6.4 9.0 6.4
PART 8 - Mark "X"' in column 2-a for each Pollutant you know or have re $ on to believe is present. sent. Mar ` 257 STANDARD UNITS _
which is limped either directly, or indirectly but expressly, in an effluentbellbelieve
limitations preguideline.nt.you must provide the results of at leaulant st one analysis for that abse n
column 2a• you must provide quantitative data or an explanation of their presence in your dlscharge.IComlpletoone tabumn 2-b fo ee for least outfall. eobelieve tot absent. If you mark column 20 for is
P t. For other pollutants forwhich youlnlalFt
f. POLLUT- Z• MARK •x _See the lnstructionsfor additionaldetailsaridrequiremenis
ANT AND - ---- _ 3. EFFLUENT
CAS NO, iI'.v"� LVivt�, a. MAXIMUM DAILY VA b. MAXIM M 4. UNITS
(ifaaailable ^" ,y o/t�)V VALUE c.LONG T�j7M AVR VALUE _ 5. INTAKE „
SEMI 'A" VALUE
rl/ a1,4i9a bi ( ( bl �i
aver a Cf t NO. O (r / (inrld!)
c ONce NrNArIOn Ir a LONCEN a LONG TERM
cuNcc Nrrr ^TION (r) •+Ass ANAL- b. MASS AV ERAGE VALUE NO. OI
959- 7- C..c Nr T,O Irl "'wss YSES - RATION �.�
2959.67.9) X ANAL
c, 2 c 6 COnC _ITNATIUN I+) Mwss YSES
'
Chlorine, /l
' utal Residual X m lb/da c . 2
0 _ 0 c2 1
Color j
- X - 10 X lb/da 0 0 1 i
Fecal - - -- -
:01dorm X 17 -- --- ----- --- —1 Units _10
`� — X
-- - — --- C01- e 1 -
Fluoride --- _ ---- ---- 1 100 ni X 49 X
16984.48.8) X -------- - ----- —
N itrat@_ - --_--_ ---- 1 _m�/1 lb/da .10
itrlte (as N) X c .05 c 1 -- — --- — . 92
1
PA Form 3510-2C (Rev. 2-85) 1 m /l lb/da
PAGE V -I .059 ,S4 1
CONTINUE ON REVERSE

EPA I.D. NUMBER (COPY /roln Ilen1 I o/ ForanI) OUTFALL NUMBER
CONTINUED FROM PAGE 3 OF FORM 2-C NC 0004961 002
Ash Basin
fort?) Approved
OM8 No 2040-0086 r
Ar 1
rran r - Prova expires 7.31-88 1 11
If you are a primary industry and this outfall contains process wastewater, refer to Table 2c.2 in the Instruct(olls to determine
2-a for all such GC/MS fractions that
which of the GC/MS fractions you must test for. Mark -X- in column
apply to your industry and for ALL toxic metals, cyanides, and total phenols. If you are not required to mark column 2-a (secondary industries,
wastewater ourfa/fs, and nonrequ/red GC/MS fractions), mark "X" in column 2-b for each
believe Is absent If
you mark column 2a for any pollutant,
of at least one analysis for that p
pollutant if you know or
nonprocess
polkilant you know or have reason to believe is present Mark ••X" in column 2-c for each pollutant you
you must provide the results of at least one analysis for that pollutant. If
have
dinitrophenol, or 2-mettlyl-4, 6 dinitrophenol, you must
concentrations of 100ppb or greater. Otherwise, for
'
you mark column 2b for anypollutan
reason to believe Its
t will be discharged in concentrations of 10 ppb or greater. If you mark column 2b for acrolein, acrylonitrile, 2.4
provide the results of at least one analysis for each of these
ryoudischae the
lin
pollutants which you know or have reason ttotbelie e that rge
pollutants for which you mark column 2b, you must either submit at least one analysis or briefly describe the reasons the pollutant Is
be discharged. Note that there are 7 pages to this part; please review each carefully. Cortlplete one table aH 7
I. POLLUTANT /
2. MARK 'X'
AND CAS
expected to
Pages) for each outfall. See instructions for additional details and requirements
NUMBER airy sr
-•--
h. �,
c c- a• MAXIMUM DAILY VALUE
vc _
3. EFFLUENT
b. MAXIM M 3 .0 p�Y VALUE C.LONG T�ji VALUE
auollab e) J.
PI)
4. UNITS
5. INTAKE (upliormll
coneLNTnAri- (,I •+Ass
METALS, CYANIDE, AND TOTAL PHENOLS
1,)
�uN� r,T_� "r
(r) ,�Aas
-----
a11AP)
(�)
"*r^r,or,
11A
NO. OF
ANAL-
uses
a. CONCEN-
TRATION
U. MASS
a. LONG
TERM
ALUE
-
h. NO r.
ANA,
IM. Antimony,_
-
_-
�-
(1) CONCEN-
TRAT,ON
(r) MASS
Y:L - I
Total (744036 0)
X
<.6 C 17
2M. Arsenic, Total
(7440-38-2)
--- -
_ - -_-----
-------.-_. _
_ _ -__ -- -
- -- -
1
mg/1
lb/day
c. 6
<6
1
X
129 4
-
- - -- --
--
- ---- --
--- -
3r�n. 9eryuiu,n,
otal, 7440 41 7)
X
- - - - - --� --
-
- -
--- --�- ---� �
1
. --_
Ug/ 1-
- ----
lb/day
1.1
O1
1
02 o6
--
4M. Cadinium.
total (7440 43 9)
X----
.. -- -- -- -
- -
1
--
mg/1
lb/day
.001
.01
1
-- -- -- - -
-
c . 04 c . 11
-
------ -
--
n,. Chromium,
I Otal 17440 47 3)
--
- -
-
-
-
1
mg/1
lb/day
c 004
c • 04
1
<.03
-- -- --
- - - --
-
GM Copper, Total
(1440508)
1
mg/1
lb/day
c .03
c 1
X c
------ -- - .03 c .85
.28
1M Lead. Total
11439.92-1) X
1..... mg/1... lb/day c .03 c .28 1
- - c 2 c .06
- - -
iL7 Mercury, Total
/439 97.61 X
1-
ug/1 lb
_ /day c 2 c .02 1
C
iM Nickel. Total-
7440 02 0)
1 lb/da C
.._ . . - . . _.. 0
.04
0'.1 Selenium•
1 Illg/H
- - - -- - - - -- --
- c .04 c .37 1
- ---- - 2 c .06
- - -- ---'-1M.
Silver, Total -/440-22 4)
U c 2 eX.042M.
,Valli„.n, - - ----
(1440 28 01 X
--- mg/1 .04 c01al
.373M
Zinc. Totalmg/1
%44U 66 61
- -- ---- ---- -
.5 c 5
.014
4M Cyanide,
(57 12 5t X.01
1 mg/102
c.285A7.
.18.oil
---Deal
Phenols,
X
._ 1Mg/1 ,.005
201 c
c c 14
.091lGxIN_mg/1
.i 1.8 I etra -- - - -
, 005 c • 05 1
'-I,uodiberi 7o P
X
Wx in (1 764 01 6i
NOT DETECTED
- -- - - - -- --- -- --- -- -- -
PA Furrn .1510-2C (Rev 2 85)
PA I' V-3
CONTINUE ON REVERSE.

I-'I)NTINUFD FROM PAGF V 4
J
LPA 1. D. N U M I)- E 14 Ic',py ff-"'n FALL L)'M-8 E
NC Fu-
t A/ ...........
I POLLUTANT 2 MA�IK
ANT 2 "_A "K
" 7 POLLUTANT
-X
0004961
------------------
02
OMR M, 2040008f;
AND
AND CA
N UM, '?
NUMBED
E
"A Xjr.jLjM
DAILY VALUE
Ash Basin
J. EFFLUEN-r
VALUE 7E 4.
"pOf
88
UNITS
T
VALUE
E
ILI j. No 0'-
5.
INTAKE I
(;C/MS F�AC TION VOLATILE COMPOUNDS
....... ...........
ANAI_ ('ONCLN- a LONG TERM
A
11! A 1 1 YSLS T RATION U. MASS F?.CLUE
22V. Methylene
Chloride (75 09 2) X
10110roathano
L
ANA,
YSL.,
< 5
<-14
(79 34-5) x
6. 9
lig1l
lb/day 5
-05
24V. T rachloro-
I etrachluro
ethylene
(127-18.4) x
<5
U
9-
< 6 . 9
06
1.25V. Toluene
< .14
.-Ib/day
100-88-3)
X
-- ..
< 6
17
U'/j
lb/day < 5
.05
•
26V. 1,2-Trans.
DichloroethYlene
(156-60-5) x
< 5
ug/1
lb/day
27V. -TrI.
<-146
-
< - 06
1.
chloroethane
L�L-55-6) x
<5
-
Ug/j
lb/day < 5
28V. 1,1,2-Tri
14
< .05
-:-I'i0f0ethane
(79-00-5) x
< 5
< .14
ug/1
lb/day < 5
< .05
29V. Trichloro.
ethylene (79.01.6) x
5
Uc'/-1
lb/day < 5
36V Tlirh-1.,o.
-< .14
--p
.05
'1,,orornothane
15-69-4) x
5
g/1
lb/day < 5
14
.-U -
05
'I V. Vinyl
:Wlllkle (75.01 4) xlb/da
c10
y < 5
IUfY - ACID COMPOUNDS
c.28
c.05
'A 2-Chloraptieno
9ta 5 7 EI)
U
lb/day -< 10
09
x
c10
<-28
'A.2.4 Dichloro
"cf'01 (120.63 2) x
< 10
lb/day 10
1,.
.2 8
--
< .09
2,4 Dirnethyl
- -
- .
- hcnol (105.679) x
< 10
<.28
lb/day - 10
< .09
A- 4.6-Dinitro.0
--- -
resol (534-52.1) X
< 501.
4
1.
lb/day c 10
c
.09
""1101 (51.28-5)
50
< 1. 4
U /1
lb/day < 50
<
11. 2,Nitrophenol
---
.46
s-75.5) X----
10
< .28
--p&ZI
lb/day -< 50
< .46
1 4-Nitrophano,
00-02-7)
< 50
c1.4
-.qg/L
lb/day < 10
<
P Chloro-M.
.09
esOl (59-50 71
< 20
<
U-g.!L--
lb/day < 50
<
Pentachloro.
.57
.46
enol (87.86-5) x-1-50<
1. 4
lb/day 20
<
A.
.18
;8 95-2) x
< 10
<
lb/day 50
<
2.4.6 Tri.
.28
.46
01oph"1101
0..621 X---
< 10
<
Ug -lb/day -< 10
<
-09
U COY, lb/day < 10
< .09

EPq I.D. NUMnER (Copy /rorn /lcru 1 of Fbnn IJ OUTFALL NUMBER /OfrrrAlrprrrved
CONTINUED FROM PAGE V-6 NC 000496 1 002 Uva 7U4res 7 3
1- POLLUTANT 2. MARK •X' Ash Basin Approval expires 88
AND CAS 3 E
--__ ___ _ FFLUENT
q13EUMBER a�ry> • c.a e• MAXIMUM DAILY VALUE b. MAXIM LIM•3_p prY VALUE t:,LONG T M qyq 4• UN
gr: (/ auQla cVALVE aooAu AL'1 " +err•I-'-__/1 NU.OF
1�) ANAL.a. CONCEN-
y_ __ TRATION
S FRACTION - BASE/NEUTRAL COMPOUNDS1,4-Dichloro-ne(106.46.7 X3,3'-Dichloro -"--dineDiethyl - - -_94-
late 2) Ximethyl -- leb11.3) X
I -N -Butyl
Phthalate --'-
(84-74.21 �{ ---- - - -- --- --- --
274. 2,4-Dinitro- -- — _..-- -- ----- -- -'-' - - - '
toluene (121.14-2) X - -._ -- -- -- - -- - -
- -
- - --
toluene (606-20-2) }( ----- -
298. Di-N-Octyl
---------- -
_. .._.. .
hthalate
(:17-84-0) X -- -
-3013. 1,2 -Diphenyl- --- - -- - -
hydrazine (as Azo- -
benzene) ( 122.66-7 X ... ---- - - - - -- - ----
31 B. Fluoranthene ---' ---'-- --- -- - - -- - _ -
.. 6-44.0) j{ - --- ------
32AH
rene - - -- .
(86 - - ---
j{- --
338.lorobenzene ---- -
fl348a- chladiene(87X351chloro- cYc
(77ediene X368chloro- -- --- -- --- '--------__--
ethane (67.72-1) I I I X
ITS
b. MASSREI�r1
5. INTAKE
a LONG
(irp trrum
TERM
;-
I
S
(193-39-5)
X ------
37 8. I ndeno
(1,2,3 -cd) Pyrene
---'- --
(193-39-5)
X ------
388. Isophorone
----- —__--_
(7B.59-1)
X ------ --
39B. Naphthalene
--
(91.20-3)
--- --- -- - - ----
X
408. Nitrobenzene
---'-- - ---
(98-95-3)
j{ ------- ---" --------- - --------
•11 C. N•Nitro- --
- - --- ------.-_-'-
>udimethylamine
- -------- ----'--'-`-'---
i62-75.9)
X-'- ------ ---_---,-
4211. NNitrosodi
-
-- _ .-- -
ti? 1 64 71
--- -- --

EPA LU. NUMpER (cul,Y /ru,n llrrn / u/ 1•'u Ml 1110 UTF'ALL NUMpER -
CUNTINUED FROM PAGE V-8 '1 !'u,n,Appru�,rf/ - `••
PO NC 0004961 I OMB No 2040 OV86
ELUTANT 002
f MA)rK .x.- I Ash Basin A!�/,rr,v;,/r.l_,•s7 J! BN
ANLL (:AS - --
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PAGE V-9

Date: March 15, 1989
NPDES STAFF REPORT AND RECOMMENDATIONS J�r�gtip'° �f; 6,e
County: Gaston if '' 1)
NPDES Permit No. NC 0004961 �p,Q
,641c
PART I - GENERAL INFORMATION 41
1. Facility and Address: Riverbend Steam Station
Duke Power Company
Post Office Box 367
Mount Holly, North Carolina 28120
2. Date of Investigation: March 9, 1989
3. Report Prepared By: Allen Hardy, Environmental Engineer I
4. Person Contacted: Richard Crowell, 704/373-7642; Monty
Neill, 704/827-4931
5. Directions to Site: The Riverbend Steam Station is located
on the west bank of the Catawba River (Mountain Island
Lake) just north of the Highway 16 crossing.
6. Discharge Point: Exist. 001 Exist. 002 Exist. 003
Latitude: 35 21128" 35 22106" 35 21137"
Longitude: 80058'12" 80057'31" 80058'30"
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No.: F 15 SW
7. Size (land available for expansion and upgrading): Duke
Power Company owns numerous acres of land on this site.
There is adequate land available for expansion and
upgrading.
8. Topography (relationship to flood plain included): The
topography consists of gently rolling slopes from 3-100.
9. Location of Nearest Dwelling: None within 1000 feet of the
existing facilities.
10. Receiving Stream or Affected Surface Waters: Mountain
Island Lake (Catawba River)
a. Classification: WS -III and B
b. River Basin and Subbasin No.: Catawba 03-08-33

Page Two
C. Describe receiving stream features and pertinent
downstream uses: The receiving stream is the Catawba
River which contains an excellent flow at all times.
The river contains numerous discharges and supplies
several cities with water. The receiving stream
experiences frequent human contact through typical
lake recreational activities.
PART III - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of Wastewater: <1% Domestic
99% Industrial
a. Volume of Wastewater: *88.96 MGD
b. Types and quantities of industrial wastewater: *The
wastewater produced at the Riverbend Steam Station
consists of several discharges. Discharge 001:
Consists of the once through condenser cooling water.
Discharge 002: Consists of wastewater from the sewage
system, storm water runoff, and the wastewater
produced from the storage, transfer and burning of
coal. Two (2) unpermitted discharges are produced
from the transformer and combustion turbine cooling
waters, storm water runoff, and miscellaneous
equipment cooling and seals.
C. Prevalent toxic constituents in wastewater: Contained
in the supplemental information provided with the
application.
d. Pretreatment Program (POTWs only): N/A
2. Production Rates (industrial discharges only) in Pounds:
N/A
3. Description of Industrial Process (for industries only) and
Applicable CFR Part and Subpart: N/A
4. Type of Treatment (specify whether proposed or existing):
Discharge 001: Contains effluent from the condensers which
receive no formal treatment. Discharge 002: The treatment
consists of an ash pond settling basin. A preliminary
treatment of domestic waste in a 10,000 gpd septic tank
also occurs before entering the ash pond.
5. Sludge Handling and Disposal Scheme: N/A
6. Treatment Plant Classification: Class I
7. SIC Code(s): 4911
Wastewater Code(s): 14, 68, 16, 69

Page Three
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants
Funds (municipals only)? No
2. Special monitoring requests: No
3. Additional effluent limits requests: No
4. Other: No
PART IV - EVALUATION AND RECOMMENDATIONS
The applicant, Duke Power Company, proposes to continue
operating wastewater facilities serving Riverbend Steam Station.
The present facilities are permitted for three discharges
(outfall serial numbers 001, 002 and 003). Outfall 001 is for
once -through cooling water, Outfall 002 is for the ash settling
pond (with domestic wastewater), and Outfall 003 is for the
proposed sludge/landfill settling pond. However, the compliance
monitoring screen shows there being five (5) locations. Those
mentioned above as well as Outfalls 004 - metal cleaning waste
and 005 - boiler blowdown. Presently discharges 004 and 005 are
being routed to the ash basin and discharged through Outfall
002, and the facilities for Outfall 003 have not been built.
There are two (2) other discharges located adjacent to the power
plant building that have not been assigned outfall numbers.
These discharges are produced from transformer and combustion
turbine cooling water, storm water runoff, and miscellaneous
equipment cooling and seals. The locations of all the
discharges are on the attached topo map. A letter of response
from Duke Power Company addressing the unpermitted discharges is
attached.
The wastewater facilities serving the station appeared to
be adequate for their intended purposes.
Therefore, for the above reasons, it is recommended that
the NPDES Permit for the subject facility be re -issued with the
following conditions; that Outfalls 001, 002 and 003 and their
discharge description remain the same, and that Outfalls 004 and
005 be added to include the appropriate monitoring (if any) for
the above mentioned unassigned outfall discharges.
/4�2�dvt__
10
-t11" .
Signature of Report Pre rer
J +
Water Quality R­-io`nal Supervisor