WQ0003253_Final Permit_19930212

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James B. Hunt, Jr., Governor
February 12, 1993
Mr. M. D. McIntosh, Vice -President
Fossil/Hydro Generation Department
Duke Power Company
PO Box 1006
Charlotte, NC 28201-1006
Jonathan B. Howes, Secretary
Subject: Permit No. WQ0003253
Duke Power Company
Dan River Steam Station
Ash Reuse Program
Rockingham County
Dear Mr. McIntosh:
In accordance with your application received November 5, 1992, we are forwarding herewith
Permit No. WQ0003253, dated February 12, 1993, to Duke Power Company for the operation of an ash
reuse program. Please be advised that the total application of this material is limited to less than 300
acres of application area.
This permit shall be effective from the date of issuance until January 31, 1998, shall hereby void
Permit No. WQ0003253 issued July 10, 1990, and shall be subject to the conditions and limitations as
specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to
establish an adequate system for collecting and maintaining the required operational information will
result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable to you, you
have the right to request an adjudicatory hearing upon written request within 30 days following receipt
of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of
North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
Regional offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

If you need additional information concerning this matter, please contact Ms. Carolyn McCaskill
at 919/ 733-5083.
ncer y, -
eston H ard, r.,
Acting Direct
cc: Rockingham County Health Department
Winston-Salem Regional Office, Water Quality Section
Winston-Salem Regional Office, Groundwater Section
Jack FIoyd, Groundwater Section Central Office
Training and Certification
Facilities Assessment Unit, Karen Colby

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
*741401001
ASH REUSE PROGRAM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Duke Power Company
Rockingham County
Frr�-M
operation of an ash reuse program utilizing ponded ash, fly ash, and bottom ash from the Dan River
Steam Station for purposes outlined in the conditions of this permit with no discharge of wastes to the
surface waters, pursuant to the application received November 5, 1992, and in conformity with the
project plan, specifications, and other supporting data subsequently filed and approved by the
Department of Environment, Health and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until January 31, 1998, shall hereby void
Permit No. WQ0003253 issued July 10, 1990, and shall be subject to the following specified conditions
and limitations:
I. PERFQRMANCE STANDARDS
The issuance of this permit shall not relieve the Permittee of the responsibility for
damages to surface or groundwaters resulting from the operation of this facility.
2. In the event that the ash reuse program is not operated satisfactorily, including the
creation of nuisance conditions, the Permittee shall cease the use of ash for the particular
Operation and take any immediate corrective actions.
3. Written notification must be submitted to the address below at least two weeks prior to
any use of ash within 50 feet of surface waters.
Winston-Salem Regional Water Quality Supervisor.
NC Division of Environmental Management
8025 North Point Boulevard, Suite 100
Winston-Salem, NC 27106

4. No ash, with the exception of quantities less than 25 cubic yards to be used on residential
driveways, shall be used within 140 feet of a potable water supply well without written
permission from the Winston-Salem Regional Water Quality Supervisor.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The following uses of ash are hereby approved:
a) Fly ash and bottom ash may be used for structural fills such as Government or
Commercial roadways, embankments, foundations, and construction foundations.
b) Fly ash may be used for flowable fills such as cement and brick mixtures, backfill
materials around water mainsz, sanitary sewers, and storm drainage structures.
c) Bottom ash may be used for secondary road overlay z, residential driveway
overlay with less than 25 cubic yards used, snow and ice control, drainage
material, pipe bedding for railroad beds, and underground storage tanks.
d) Fly ash may be used for wastewater residuals solidification and stabilization
provided it is identified as a source of liming material and submitted with the
appropriate application package by the user and approved by this Division. All
stabilization methods utilized must receive prior approval from the Division for
the appropriate permit to be issued.
e) Fly ash may be used as a soil amendment upon receiving written approval from
the County Agriculture Extension Agent.
f) Fly ash and bottom ash may be used in other applications once written approval is
received by the Division of Environmental Management on a case by case basis.
IUpon approval from the Division of Environmental Health, Public Water Supply
Section.
2 Fly ash may not be used at any time as a secondary road overlay.
2. No ashes other than that generated at the Dan River Steam Station are hereby approved
for the ash reuse program in accordance with this permit.
I Adequate provisions shall be taken to prevent wind erosion and surface runoff/erosion
from conveying pollutants from the ash application area onto the adjacent property or into
the surface waters.
4. No other form of ash other than Bottom Ash for snow and ice control is to be applied in
inclement weather or until 24 hours following a precipitation event equal to a rainfall
event of 1/2-inch or greater in 24 hours.
5. No ash shall be used for land reclamation within one (1) foot of the seasonal high
groundwater table.
6. No ash shall be used as pipe bedding for sewer or potable water lines.

7. The permittee shall ensure that the transportation of this product does not cause any
adverse impact, i.e., transport in a leak proof truck for wet material, ensure that trucks are
covered for dry material, or otherwise protected to prevent any adverse impact resulting
from the operation.
f 1' •►11 •��. ► ; I Ili a I OWN
Any monitoring (including groundwater, surface water, sludge, soil, or plant tissue
analyses) deemed necessary by the Division of Environmental Management to insure
protection of the environment will be established and an acceptable sampling and
reporting schedule shall be followed. If monitoring data indicates minimal or no concern
to the Division, reduction of monitoring requirements may be pursued after two annual
reporting periods.
2. Proper records shall be maintained by the Permittee tracking all utilization activities.
These records shall include, but are not necessarily limited to, the following information:
a) date of ash application,
b) type of ash used,
c) location of ash application (site, field, or zone #),
d) volume of ash applied in tons 1,
e) ash receiver,
f) application ash was used for and
g) cumulative application area.
I For volumes less than 25 cubic yards, records shall include items d), e), and f) as listed
above.
3. A representative annual ash analysis (using TCLP method) shall be conducted and the
results maintained on file by the Permittee for a minimum of five years. The ash analysis
shall include but is not necessarily limited to the following parameters:
Manganese
pH
Phosphorus
Sodium
Potassium
Nickel
Lead
Cadmium
Zinc
Copper
Magnesium
Calcium
Arsenic
Barium
Chromium
Mercury
Selenium
Silver
4. A Toxicity Characteristics Leaching Procedure (TCLP) analysis of the ash shall be
conducted by the Permittee prior to permit expiration and the results shall be submitted
with the request for renewal of the permit to the Division. The TCLP analysis shall
include the following parameters:
Arsenic Barium
Benzene Cadmium
Carbon tetrachloride Chlordane
Chlorobenzene Chloroform

Chromium
o-Cresol
m-Cresol
p-Cresol
Cresol
2,4-D
1,4-dichlorobenzene
1,2-dichloroethane
1,1-Dichloroethylene
2,4-Dinitrotoluene
Endrin
Heptachlor (and its hydroxide)
Hexachlorobenzene
Hexachloro-1,3-butadiene
Hexachloroethane
Lead
Lindane
Mercury
Methoxychlor
Methyl ethyl ketone
Nitrobenzene
Pentachlorophenol
Pyridine
Selenium
Silver
Tetrachloroethylene
Toxaphene
Trichloroethylene
2,4,5-Trichlorophenol
2,4,6-Trichlorophenoi
2,4,5-TP (Silvex)
Vinyl chloride
5. Three copies of all monitoring and reporting requirements as specified in conditions III 2,
and Ill 3 shall be submitted annually on or before March 1 of the following year to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 27687
Raleigh, NC 27611-7687
6. The permittee shall submit to each recipient of this product written information
concerning the intended uses of this material. This information shall include any
restrictions which apply to the application of this product as outlined in the conditions
contained in this permit.
7. Noncompliance Notification:
The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone
no. [phone], as soon as possible, but in no case more than 24 hours or on the next
working day following the occurrence or first knowledge of the occurrence of any of the
following:
a. Any occurrence with the ash reuse program which results in the application of
significant amounts of ash which are abnormal in quantity or characteristic.
b. Any spillage or discharge from a vehicle or piping system transporting ash to the
application site.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 days following first knowledge of the occurrence. This report must
outline the actions taken or proposed to be taken to ensure that the. problem does not
recur.
IV. GROUNDWATER REQUIREMENTS

1. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
V. INSPECTIONS
The Permittee or his designee shall inspect the ash storage and transport facilities to
prevent malfunctions and deterioration, operator errors and discharges which may cause
or lead to the release of wastes to the environment, a threat to human health, or a
nuisance. The Permittee shall keep an inspection log or summary including at least the
date and time of inspection, observations made, and any maintenance, repairs, or
corrective actions taken by the Permittee. This log of inspections shall be maintained by
the Permittee for a period of three years from the date of the inspection and shall be made
available upon request by the Division of Environmental Management or other permitting
authority.
2. Any duly authorized officer, employee, or representative of the Division of
Environmental Management may, upon presentation of credentials, enter and inspect any
property, premises or place on or related to the disposal site and facility at any reasonable
time for the purpose of determining compliance with this permit, may inspect or copy any
records that must be kept under the terms and conditions of this permit, or may obtain
samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITION
1. This permit shall become voidable unless the ash reuse program activities are carried out
in accordance with the conditions of this permit and in the manner approved by this
Division.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change
ownership or a name change of the Permittee, a formal permit request must be submitted
to the Division of Environmental Management accompanied by an application fee,
documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
4. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6.
5. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revolve this permit as specified by 15A NCAC 2H .0205
(c)(4).
6. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.

7. The Permittee, at least six (6) months prior to the expiration of this permit, shall request
its extension. Upon receipt of the request, the Commission will review the adequacy of
the facilities described therein, and if warranted, will extend the permit for such period of
time and under such conditions and limitations as it may deem appropriate.
8. This permit may be modified, or revoked and reissued to incorporate any conditions,
limitations and monitoring requirements the Division of Environmental Management
deems necessary in order to adequately protect the environment and public health.
Permit issued this the 12th day of February, 1993
NOR CAROLINA ENV O AL MANAGEMENT COMMISSION
A. Preston Howaftk Jr., P.E., g Director
Division of EnvironhwntalWanhgement
By Authority of the Environmental Management Commission
Pen -nit No. WQ0003253

Name of Plant:
wt~r
Owner or Contact Person:_,/N1)
4�c.Zn tyi b
Mailing Address:_ _
.0 —6ok ldyG —
------------ ---
��c�
C_h A � h If - C-? z ��----- -
County:
Telephone:
NPDES Permit No. NC00
Nondisc. Per. No.l.,V 66,03Z�T4
Issue Date: /y iy Zfi'G Expiration Date:.7Z;ne e3a_ /S Sf
Existing Facility
New Facility
Rated By: SjjM I
Date:
Reviewed (Train. & Cert.)
Reg. Office��..-�,�
Reviewed (Train. & Cert.)
Central Office
ORC
Grade
Plant Class: (circle one) I Il III 1V Total Points
ITEM POINTS
(1) Industrial Pretreatment Units and/or
Industrial Pretreatment Program
(see definition No. 33)
4
(2) DESIGN FLOW OF PLANT IN GPD
(not applicable to non -contaminated cooling waters, sludge
handling facilities for water purification plants, totally
closed cycle systems (def. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d) and (11)
(d))
0 20.000..........................
1
20.001 -- 50,000..........................
2
50,001 -- 100,000 ................. L........
3
100,001 -- 250,000..........................
4
250,001 500,000..........................
5
500,001--1,000,000..........................
8
1,000,001 -- 2,000.000 ........................
10
2,000,001 (and up) - rate 1 point additional for each
200,000 gpd capacity up to a
maximum of 30
Design Flow (gpd) :
(3) PRELIMINARY UNITS (see definition no. 32)
(a) Bar Screens .................................
1
or
(b) Mechanical Screens, Static Screens or
Comminuting Devices ........... ............ .
2
(c) Grit Removal ................... ............
1
or
(d) Mechanical or Aerated Grit Removal ...........
2
(e) Flow Measuring Device .......................
1
or
(f) Instrumented Flow Measurement ..............
2
(g) Preaeration................................
2
(h) Influent Flow -Equalization ...................
2
(i) Grease of Oil Separators - Gravity ..........
2
Mechanical..........
3
Dissolved Air Flotation.
8
0) Prechlorination ..............................
5
(4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) .............. 2
(b) Imhoff Tank, - . , . . ............................ 5
(c) Primary Clarifiers ............................ 5
(d) Seliling Ponas or Settling Tanks for Inorganic
Non -toxic Materials (sludge handling facilities
for water purification plants, sand, gravel,
stone, and other mining operations except
recreational activities such as gem or gold
mining) ..................... 2
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeralion - High Purity Oxygen System .....
Diffused Air System ...........
Mechanical Air System (fixed,
floating or rotor) ..............
Separate Sludge Reaeration .....
(ii) Trickling Filter
High Rate ...................
Standard Rate ............... '
Packed Tower ...............
(i i i) Biological Aerated Filter or Aerated
Biological Filter ......................
(iv) Aerated Lagoons ..................... .
(b)
(v) Rolaling Biological Contactors ..........
(vi) Sand Filters -
intermittent biological .... .
recirculating biological .... .
(vii) Siabilizalion Lagoons ...................
(viii)Clarilier ........... I . . ............... :
(ix) Single stage system for combined
carbonaceous removal of BOO and
nitrogenous removal by nitrification
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (viii) .................
(x) Nutrient additions to enhance BOD
femoval...............................
(xi) Biological Culture ('Super Bugs') addition
to enhance organic compound removal ....
Nitrogenous Stage
(i) Aeration High Purity Oxygen System
Diffused Air System ...........
Mechanical Air System (fixed,
floating or rotor) ..: '.
Separate Sludge .Reaeration .... .
(ii) Trickling Filter
High Rate ..............
Standard Rate ............
Packed 'rower ........... .
(iii) Biological Aerated Filter or Aerated
Biological Filter ........................ .
(iv) Rotating Biological Contactors .............
(v) Sand Filter -
intermittent biological .. .. ... .
recirculating biological ...... - .
(vi) clzrilier . .............................. .
20
10
8
3
7
5
5
10
10
HE
2
3
.1
5
20
10
8
3
7
5
5
10
10
2
3
5

,C TERTIARY OR ADVANCED TREATMENT UNIT
(a}
Activated Carbons Beds
without carbon regeneration ............. . ....
5
with carbon regeneration ....................
1 5
(p)
Powdered or Granular Activated Carbon Feed -
wilhout carbon regeneration .................
5
with carbon regeneration .... . ..... . .:..r ...
1 5
(c)
Air Stripping .......................... . ...
5
(d)
Denitrilicalion Process .(separate process) - -
1 0
(e)
Etectrodialysis ... - .... -, - , .,..:. . ............
5
(f)
Foam Separation ... . ........................ .
5
(g)
ton Exchange .................................
5
(h)
Land Application of Treated Effluent
(see definition no. 22b) (not applicable for
sand, gravel, slone and other similar mining
operations)
(i) on agriculturally managed sites (See del.
No.4)....................... _ _ ........
10
(ii) by high rate infillralion on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
4
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of -septic lank and nitrifica-
tion lines only) .............................
4
W
Microscreens..................................
5
(j)
Phosphorus Remoaal by Biological Processes
(See def. No. 26) ............................
20
(k)
Polishing Ponds - wilhoul aeration - - - - - . -
2
%vith aeration ..........
5
(1)
Post Aeration - cascade ..............
0
diffused or mechanical ...
5
(m) Reverse Osmosis ...............................
5
(n)
Sand or Mixed -Media Filters - low We ...........
2
high rate ..........
5
(0)
Treatment processes for removal of metal or
cyanide....................................
15
(p)
Treatment processes for removal of toxic
materials other than metal or cyanide .........
15
S LUDG E TR EATMENT
(a)
Sludge Digestion -tank - Heated ...............
10
Aerobic.. . . ...........
5
Unheated .............
3
(b)
Sludge Stabilization (chemical or thermal) .......
5
(c)
Sludge Drying Beds - Gravity .................
2
Vacuum Assisted .......
5
(d)
Sludge Eluviation .............................
5
(e)
Sludge Conditioner (chemical or thermal) ...... - .
5
(f)
Sludge Thickener (gravity) ... . ..................
5
(g)
Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) .........
8
(h)
Sludge Gas Utilization (including gas storage) . - ..
2
(i)
Sludge Holding Tank - Aerated ................
5
Non -aerated ............
2
(j)
Sludge Incinerator - (not including activated
carbon regeneration) - ....
10
(k)
Vacuum Filler, Centrifuge or Filler Press or other
similar dewaledrig devices ................ . ...
10
8) SLUDGE DISPOSAL (ncluding incinerated ash)
(a) Lagoons ....................... .........
rp�
(b)
Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit
-by contracting to a land application operator who
holds the land application permit ................
2
-land application of sludge by a contractor who does
not hold the perm -it for the wastewater treatment
facility where the sludge is generated . - .......
10
Landfilled(burial)-------------------------•---
'
5
} D � gFECTION
(a)
Chlorination ........................ .....
5
(b)
Dechlorination ....... . ................
5
(c)
Ozone ..............................
5
(d)
Radiation .. . .......................
5
(101 CHEMICAL ADDITION SYSTEM (S) (See delinition No. 9)
(not applicable to chemical additions rated as item
(3) (j). (5) (a) (xi), (6) (a). (6) (b), (7) (6), (7) (e),
(9) (a), (9) (b), or (9) (c) 5 points each: List'
5
5
(11) MISCELLANEOUS UNITS
(a) Holding Ponds, Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phgsphorous compounds in amounts significantly
greater than is common for domestic wastewater .......... 4
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems). 2
(c) Stage Discharge (not applicable to storage basins
inherent in land application systems ....................................... 5
(d) Pumps .......................... ........-.-­-_.._....---............._.......I......I—— ... 3
(e) Stand -By Power Supply ................................. ............................---.. 3
(f) Thermal Pollution Control Device ............................................. 3
TOTAL POINTS
CLASSIFICATION
Class I .................................... __—....... 5 - 25 Points
Class IL... ....... .-................ 26- 50 Points
Class III .... ..... ............................. ............ _.. 51- 65 Points
Class IV .... _................................. _........... 66- Up Points
Facilities having a rating of one through four points, inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
Facilities having an activated sludge process will be assigned
a minimum classification of Class Il.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class It.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
Ill.
In -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment, Likewise, discharges of wastewater from residences
having a design flow of 1,000 gpd or less, shall not be subject to
rating.
ADDITIONAL COMMENTS:
. _-1.3 1,