NC0004979_Permit (Issuance)_19841001

F DEPA4, _:. - ._ .. _
..._ _.�.
Y
C a _
In coc_1_ance - -r. .. crcv___cr.s c_ Ncrt! __
' ocher lz'.r. sta:lord_ a.,.. __ _ _ _ ___ ci L._ 3a re^ai
� . `
-`-g'=1�.'.,ns _- -�_ad anc adc-ad D; the iicrth Czro.ma
n enmenui !lanage n=_nt Coac,i
ameded, ..salon, a _ t.._ ederal wa-=_r- 'cllu-ior. Ccn'rol :-.c', as
amen
Duke Power Company
is re_`.i aat:^.crized to c.,_narge '.:as-er_ter from a fac41--y located at
Allen Steam Station
Gaston County
to receiving watzrs designated the South Fork Catawba River and the Catawba River
in the Catawba River Basin
in accordance vita effluent limitatons, monitoring recuirements, and other
conditions set forth in Parts i, II, and !I: hereof.
This permit snailsecome effective October 1, 1984
This permit and the authorization to discharge shall expire at midnight
on September 30, 1989 _
Signed this day of October 1, 1984
origi"I Signed BY /, r C\;f
FORREST R. WESTALL _.-_-
FOR
Robert F. Helms, Director
Division of Environmental Management
By Authority of the Environmental
Management commission
:1 S 41

Permit No. HC000�979
a. .
SUPPLEMENT TO PERMIT COVER SHEET
F
Duke Power Company
reby authorized to:
J . Enter into a contract for construction of any additional waste-
water treatment facility necessary to comply with the final
effluent limitation contained in this permit, and
' .- 2. After receiving an Authorization to Construct from the Division
of Environmental Management, construct and operate additional
wastewater treatment facilities necessary to comply with the
final effluent limitations contained in this permit,- and con-
tinue to operate and maintain the existing wastewater treatment
facility located at the Allen Steam Electric Generating Plant
(See Part III of this permit) , and
3. Discharge from said treatment works into the South Fork Catawba
River (001) and the Catawba River (002) which are classified Class
"A-II and H" waters respectively.
c
c?
,V, jf

A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final .i Ffa
1 }�
During the period beginning on the effective date of the Permit and lasti n9 until'..pernii ttee is authorized to discharge from out fall (s) serial nuniber(s) 001 , once thro,49
Such discharges shall be limited and monitored by the permittee as specified below:'
�N]
Effluent Characteristics Discharne Limitations "' '6
Mona torah _
--
Kg.day (lb day) Other Units (Specify) Measurement Sampl er>
Daily Avy. Daily Max. Daily Avg_ Dail,_lax_ Freguenc�_ TYPe :r: ,
Flow
Daily Pump log or E;
similar reading
4 w
Temperature °C(°F) 1/ 36(96)* ( �10-z �/ 4 Daily Grab E .
��✓�//
*During the period June 1 to September 30, 38.90C(102.0°F) is permitted.
**E - Effluent.
I/The Regional Administrator has determined pursuant to Section 316(a) of Lite Act that the thermal tow0onent of
the discharge assures the protection and propagation of a balanced, indigenous population of shellfish, fish,
and wildlife in and on the receiving body of water.
a Plea p ;p
y$olljO
o
0
n
r.
u

A. ( 2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final
7Lq n
During the period beginning on the effective dace of the permit- al
permittee is authorized to discharge from outfall (s) serial number(i),..
Such discharges shall be limited and monitored by the permittee as spec.
ffluent Characteristics
Discharge Limitations ]
Kg/day (lbs/day) Other Units (Specify) Measurement `• +u
Daily Avg. Daily Max. Daily Avg_ Daily Max. Frequency
Weekly Pump yoga;,
Flaw Similar read
15 nig/ 1 20 mg/1 2/Month Grab
Oil and Grease 30 mg/ I 100 mg/l 2/Month Grub '�',E
Total Suspended Solids 1/ 1000 pg/l 1000 I'g/l 2/11onth Grail Ef ]
Total copper 1000 1,01 `�'1000 Jig/i 2/Month Grab se,
Total Iron - Ip ulrle rly Grab Effl"entii)
Total Arsenic tluarLarly Grab EfflnenL
Total Selenium Ipuirterly Grob Effluent
Total Vanadium** 2/Month Graf, C(flucui
pli
*Eff luent,sa4 ling shall be conducted at the dfxah;nl,t. innu the ueh settling pond prior
to mixing witli any Iother waste stream, 'except for Oil which shall be smnpled aL Lhe i
confluence ,of,ithe 0schacge and the receiv i.ng water.
* MI itbrinj;J3r vanadium shall only he cond
ucted I��r tiny 9u�irter during which the generating
lant il.obi) fired.
Th Dj @��ll", 11 1 waste, coal pile rulioff, ash Irnneprlrt wnler , and low volume waste sbalI
be dis barged into the ash settling poll".
z v v
i
1/ Daily average of 50 mg/1 is permitted provided pe rml[Cec can sa tisfae.to oily donut Suspended
mt o 1
the difference heCw eon 30 mg/1 and 50 mg/l iue to Lhe cnncen tratinu nF CO❑il suspended solids
s d r
I
in the source body. O
0 0`
The pH shall not be less than 6.0 standard units nor greater than 19.o standard units
and shall be monitored as indicated above.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

q, f
T7�
r
1
Pe snit No. t1C I'704°7q
s
s-State cater ouality per-nits issued to this faci11ty-vpked
$Y construction or operation or discharge, are hereby ro
"pce of tMs permit. The conditions, requirements , terns , and
ions of this permit author zing discharge under the National
utant 0ischarg2 Elimination System governs discharges from this
Iity.
Construction
No construction of wastawater treatment facilities or additions thereto
shall be begun until Final Plans and Specifications 'nave been submitted
to the Division or Environmental Management and written approval and
Authorization to Construct has been issued. If no objections to Final
Plans and Specifications has been made by the OEM after300whichever days following
the
receipt of the plans ed issuance of approved andthis construction authorized.
plans may he considered approved
C. Certified Operator
Pursuant to Chapter 90A of North Carolina General Statutes, the permit-me
shall employ a certified wastewater treatment plant operator in responsible
charge of the wastewater treatment facilities. such operator must hold a
certification of the grade equivalent to the classification assigned to
the wastewater treatment facilities.
D. In the event char waste streams 'ram various sources are combined 3or creat—
went or disciarge. :he cuanr47 of aach pollutant or pollutant proper:;'
attributable to each controlled c:asze source snail nor exceed :he specified
limitarion -or that waste source-
E. If the permittee. after monitoring -or at '_east xis months, det=_rcrLpes fiat
he is consistently meeti= the affluent limits contained herein, the ?e_ =te=
may rEauest of the Director that the monitoring rea virements be reduced -
lesser 'reauency.
F. There shall be no discharge of pplycnlor_nara_d Bypneayl compounds such as
those commonly used -or transformer _"-uid.
G. 1'.ie company shall no illy the Director in writing not lacar th-a.,s`ixty days
xior to its ti toting axe of any biocide or chemical used incooLin�,systems .
including chlorine, •.+nice way be toxic to aquatic i{ie 3, 1.' . an chose
Su.�previously reported to the Division of Environmental;'^azia. n� h
notification shall include: f� C `- .y td
1. Name and general composition of Biocide or che^_i$G1, �-u- Cc 2 Proposed discharge concentrations, �
3. Quanttcies to be used, and
+. Frequencies of use.

Par_ iI1 i
ggg 1`` fdT ��'' r• Per No NC G0457g
n to ke screen backwash discharge is permitted without limits-
monitoring requirements.
mgcon to fined in this permit shall be construed as a waiver by
ittee or any right to a hearing it may have pursuant to State or
ede ral laws or regulations. -
:-- This permit shall be modified, or alter. 5tively, revoked and reissued _
to comply with any applicable effluent standard or limitation issued a
or approved under Section 301(b) (2) (C) , and (D) , 304(b) (2) , and 307(a) (2) _
of the Clean Water Act, if the effluent standard or limitation so
issued or approved:
1. Contains different conditions or is otherwise more stringent
than any effluent limitation in the permit; or .
e
2. Controls any pollutant not limited in the permit.
The permit as modified or reissued under this paragraph shall also
contain any other requirements of the Act then applicable.
K. The term "low volume waste sources" means, taken collectively as if
from one source, wastewater from all sources except those for which
specific limitations are otherwise established in this part. Low
volume wastes sources include , but are not limited to: Wastewaters
from wet scrubber air pollution control systems, ion exchange water
treatment system, water treatment evaporator blowdown, laboratory and
sampling streams, boiler blowdown, floor drains, cooling tower basin
cleaning wastes, and recirculating house service water systems. Sanitary
and air conditioning wastes are not included.
L. The term "metal cleaning waste" means any wastewater resulting from
cleaning (with or without chemical cleaning compounds) any metal process
equipment including, but not limited to, boiler tube cleaning, boiler
fireside cleaning, and air preheater cleaning. Metals cleaning will
be conducted according to Duke Power' s approved equivalency demonstration.
M. The term "chemical metals cleaning waste" means any wastewater resulting
from the cleaning of any metal process equipment with chemical compounds,
including, but not limited to, boiler tube cleaning.
N. It has been determined from information submitted that the plans and
procedures in place at Allen Steam Station are equivalent to that
of a BMP.
0. "Upset" means an exceptional incident in which there is unintentional
and temporary non-compliance with technology based perinif:_ef'f,-'kuent
limitations because of factors beyond the reasona¢fe' controTsof the
permittee. An upset does not include noncompliance tC_;'tNc�extend.caused
by operational error, improperly designed treatment f3 33tqs, inadequate
treatment facilities, lack of preventive mainteparce; '_cakless�pr
improper operations. C:) o \
l r c.f