Allen Steam Facility - Duke Energy (18)

IkO
Duke
Energy.
February 17, 2011
Mr. Bradley Bennett
Division of Water Quality
Stormwater Permitting Unit
North Carolina Department of Environment
and Natural Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: NPDES Stormwater Permit Application
Allen Steam Station
Dear Mr. Bennett:
CORPORATE EHS SERVICES
Duke Energy
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K / PO Box 1006
Charlotte, NC 28201-1006
��r= lLgOWR O
E
2 l 2011
DENR - WATER
Branch
Duke Energy requests a stormwater discharge permit for the Allen Steam Station located in
Gaston County, North Carolina. Please find attached three sets of the following documents
related to this permit request:
a. EPA Form 1;
b. EPA Form 2F;
C. EPA Form 2F Supplemental Information;
d. Available stormwater analytical data;
e. DWQ ROS Request Form;
f. ROS Form Supplemental Information;
g. Site Location Map
h. Site Stormwater Plan Drawing
Numerous stormwater outfalls are located at the Allen Steam Station. The accompanying
stormwater analytical data was obtained from samples collected at outfalls SWO08 and SWO15
during June 2009 and April 2009, respectively.
Please contact me at [e-mail] or at 704-634-7098 if you have any
questions or need any additional information.
Sincerely,
Mark McGary, P.E.
Environmental, Health & Safety
www.duke-energy.com

EPA,ID Number (copy from Item 1 o1 Form 1) 'Form Approved OMB No 2040-0086
Please onnt ortvpe in the unshaded areas only `NC0004979 Approval expires 5-31-92
FORM��
ZF
NPDES
U S Environmental Protection Agency
Washington, DC 20460
Application for Permit to Discharge Storm Water
Discharges Associated with Industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this application is estimated to average 28 6 hours per application, including time for.reviewing{instructions, searching existing data,sources,
gathering and'roaintaining the data needed, and'completing and reviewing the collection of information Send comments regarding the burden i estimate, any,other'aspect
of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to Chief, Information Policy
Branch, PM -223 U S Environmental Protection Agency, 1200 Pennsylvania Avenue, NW, Washington, DC 20460, or Director, Office of Information and Regulatory
Affairs, Office of Management and Budget, Washington, DC 20503
(.Outfall Location
For each outfall, list the latitude and longitude of,rts location to the nearest 15 seconds and the name of the receiving water
A Outfall Number D Receiving Water
(list) B Latitude C Longitude (name)
See attached See attached supplemental information
II Improvements
A Are,you now required by any Federal, State, or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater
treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes, but is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule letters, stipulations, court orders, and granter loan conditions
2 Affected Outfalls 4 Final
1 Identification of Conditions, Compliance Date
Agreements, Etc number source of discharge 3 Brief Descnphon of Project a req b prof
N/A
B You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect'your discharges) you now have under
way or which you plan Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction
III SiteDrainage Map
Attach a site map, showing topography (or indicating the outline of drainage areas served by the outfalls(s) covered in the application if a topographic map is unavailable)
depicting the facility including each of its intake and discharge�structures, the drainage area of each storm water, outfall, paved areas and buildings within the drainage
area of each storm water outfall, each known past or present areas used for outdoor storage of disposal ofsignificant materials, each wasting structuralfdontrol measure
to reduce pollutants'in storm water runoff, materials loading and access areas, areas'where pesticides, herbicides, sod conditioners and fertilizersare applied, each of
its hazardous waste, treatment, storage or disposal units (including each area not'requued to have a RCRA permit which is•used for accumulating hazardous waste
under40 CFR 262 34), each well where fluids from the facility are injected underground, springs, and other surface water bodies which received storm water discharges
from the facility
,EPA'Form 3510-2F (1-92) Page 1 of,3 Continue on Page 2

r
Continued from the Front
IV Narrative Description of Pollutant Sources
A For each outfall provide an estimate of the area (include units) of imperious surfaces (including paved areas and budding roofs) drained toithe outfall, and an estimate of the total surface area,
,dramed by the outfall
Outfall
Area of Impervious Surface
Total Area Drained
Outfall
Area,of Impervious Surface
Total Area Drained
Number
(provide units)
_ (provide unds)
Number
_ (prowde units)
(provide unds)
SW008
See attached supplemental
and
information
SW015
B Provide a narrative descnption of significant materials that are currently'or m the past three years have, been treated, stored;or disposed'in a manner to allow exposure
to storm water, method of treatment, storage, or disposal, past -and present, materials management practices employed to minimize contact'by these matenals+with
storm water runoff, materials loading and access areas, andlhe`location„manner, and frequency in which, pesticides, herblades,,soll conditioners, and fertilizers are
applied
See attached supplemental information
C For each outfall, provide the location and a description of existing structural and nonstructural control measures to reduce pollutants'in storm water runoff, and a
-treatment,
description of the4reatment theistorm,water receives,lincluding,the schedule and type,of maintenance for control and measures and the ultimate disposal
of any solid or fluid wastes other than by discharge
Outfall
List Codes from
Number
Treatment
Table 2F-1
See attachedsupplementalinformation
Nonstormwater Discharges
A I certify under penalty of law hat the outfall(s) covered by this application have been tested or evaluated for the presence of nonstormwater discharges, and that all
nonstormwater discharged from these outfalls) are identified in either an accompanying Form 2C or.From 2E application for the outfall
Name and Official Title (type o -r pnnt)Signatu
Brian R Weisker - General Manager
kle.--
Date Signed
z %1'7 ZO�I
B Provide a description of,the method used, the date of any testing, and the onsite drainage points that were directly observed during a test
Visual inspection was performed on November 29, 2009 Stormwater outfalls were inspecte7d following a period of,dry weather of
at least 72 hours duration to determine if any process water was discharging With the exception of those outfalls permitted as
NPDES discharges of process water, there were no non-stormwater discharge flows observed
I. Significant Leaks or Spills
Provide existing information regarding the history of significant leaks or spills of'toxic or hazardous pollutants at the facility in the last three years, including the
approximate date and location of the spill or leak, and the type and amount of matenal released
within the past three years there have been no significant spills or leaks of hazardous substances in excess of reportable
quantities set forth by Section 311 of the Clean Water Act or Section 102 of CERCLA
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

Continued from Page 2 1
EPA ID Number (copy from Item Pof Form 1)
ILDischarge Information
A, B. C. & D See instructions before proceeding Complete one set of tables for each outfall Annotate the outfall number in the space provided
Table,Vll-A IVII-B, VII -C are included on separate sheets numbers VII -1 and VII'' -2
E Potential discharges not covered by analysis — is any tonic pollutantlisted in table 2F -2,,2F-3, or 2F-4, a,substance or a component ofla substancewhich you
currently use or manufacture as an intermediate or final product or byproduct?
❑ Yes (list all such pollutants below) No (go to Section UQ
111 Biological Toxicity Testing Data
Do you have any knowledge or reason to,believe that any biological testfor acute or chronic twacdy has been made on any of your discharges or on a receiving water,m
relation to your discharge withm`thedast 3 years?
❑ Yes (list all such pollutants below) ❑✓ No (go to Section PQ
IX Contract Analysis Information
Were any of<the analyses reported in Item' VII performedfby a contract laboratory or consuftrng firm?
© Yes (list the name, address, and telephone number of, and pollutants
❑ No (go to 'Section X)
analyzed by, each such laboratory or firm below)
A Name
B Address
C Area Code & Phone No
D Pollutants Analyzed
Shealy Environmental Services,
106 Vantage Point Drive
803-791-9111
Wet chemistry and metals
Inc
~West Columbia, SC 29172
GEL Laboratories, LLC
2040 Savage Road
843-556-8171
Radiologicals
Charleston, SC 29407
X. Certification
I certify under penalty of law that this document,and all attachments were prepared under my drection or supennsron in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons
directly responsible for gathenng the information, the informalion submitted is, to the best of my knowledge and belief, true„ accurate, and complete I am aware that
there are significant penalties for submitting false information, including the pos§rbrhty of fine and impnsonment for knowing wolabons
A Name & Official Title (Type Or Pnnt)
B Area Code and Phone No
Brian R Weisker - General Manager II
(704) '829-2400
C Sig�re �
� ��o/
D Date Signed
//,-7/
��
z Z.O/
EPA Form 3510-2F (1-92) Page 3 of 3

EPA ID Number (copy from Item 1 ofForm'1) Form Approved OMB No 2040-0086
Approval expires 5-31-92
VII Discharge=information (Continued -from page 3 of Form 2F)
Part A — You must provide the results of at least one analysis for every pollutant in this table Complete one table for eacti ouffall See instructions for additional details
Pollutant
and
CAS Number
(d avadable)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
,
Flow -Weighted
Composite
Orland Grease
WA
2 00
Outfalls SWO08 and SWO15
Biological Oxygen
Demand(BODS)
(see other attached Forms 2F
Chemical'Oxygen
Demand (COD)
for SW008 and SWO15 analytical
Total,Suspended
Solids (TSS)
results)
Total Nitrogen
Total Phosphorus
pH
Minimum
Maximum
Minimum
Maximum
Part B— List) eactv pollutant that is limited in an effluent guideline which the,faaldy is sublect,to or any pollutant listed in the faald s NPDES permit for its process
wastewater (d the faaldy is operating under an existing NPDES permit) Complete one table"for each outfall See the instructions for additional details and
requirements
Maximum Values Average Values
(include units) (include units) _
Pollutant Grab Sample Grab Sample
and Taken During Taken During
CAS,Number First 20 Flow -Weighted First 20 Flow -Weighted
(davadable) Minutes Composite Minutes Composite
Number
of
Storm
Events
Sampled
Sources of Pollutants
2 00
Outfalls SW008 andzSW015
(see other attached Forms 2F
for SWO08 and SWO15 analytical
results)
EPA,Form13510-2F (1-92) Page VII -1 Continue on'Reverse

Continued from the Front
Part C - List each pollutant shown in Table 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present. See the instructions for additional details and
requirements. Complete one table for each outfall.
Maximum Values Average Values
(include units) (include units) Number
Pollutant Grab Sample Grab Sample of
and Taken During Taken During Storm
CAS Number First 20 Flow -Weighted First 20 Flow -Weighted Events
(ifavailable) Minutes Composite Minutes Composite Sampled Sources of Pollutants
2.00 Outfalls SW008 and SW015
(see other attached Forms 2F
for SW008 and SW015 analytical
results)
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted composite sample.
1.
Date of
Storm
Event
2.
Duration
of Storm Event
(in minutes)
3.
Total rainfall
during storm event
(in inches)
4.
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5.
Maximum flow rate during
rain event
(gallons/minute or
specify units)
6.
Total flow from
rain event
(gallons or specify units)
4/20/2009
6/4/2009
240
960
0.59
2.82
> 72 hours
81 hours
Data not available
Data not available
1.42 MG
at Outfall SWO15
0.19 MG
at Outfall SWO08
7. Provide a description of the method of flow measurement or estimate.
Flow data derived from a theoretical runoff calculation using local meteorological data and drainage area characteristics for
Outfalls SWOOB and SWO15.
EPA Form 3510-2F (1-92) Page VII -2