NC0004979_Pilot Test for Selenium Reduction_20030722

Pb -Duke. FOSSIL -HYDRO GENERATION
®Power.®
Duke Power
A Duke Energy Company EC11E / 526 South Church Street
July 22, 2003 .! Charlotte, NC 28202-1802
Mr. Rex Gleason- - C
Water Quality Supervisor f
North Carolina Department of
Natural Resources
919 North Main Street
Mooresville, NC 28115
Subject: Allen Steam Station
NPDES Permit NC0004979
Pilot Test for•Selenium Reduction,
Dear Mr. Gleason:
Per our conversation with you, Mr. Mike Parker and Mr. Richard Bridgeman of your office and Mr. Tom Belnick
and Mr. David Goodrich of the Raleigh -.office on July 21, 2003, . a description of.the.proposed pilot test•to reduce the
selenium concentration in the wastewater of the Allen Steam Station:ash basin follows for your review and approval.
Currently stop logs have been added to block the discharge flow from the ash basin tower to Lake Wylie due to the
selenium concentration exceeding the 31 µg/L maximum daily limit on July 15, 2003. The proposed pilot test
protocol to reduce the selenium concentration includes several options: -
• Pump wastewater from the vegetated ash delta, where the selenium concentration is currently less than
3 µg/L, to the.ash basin discharge tower (see line diagram)-
• Add ferric sulfate at 100 gallons per 5 MGD of effluent -upstream of :vegetated ash delta to enhance
precipitation of selenium (see attached lune diagram, and, MSD S -sheet);
• Possibly utilize the old ash basin for additional retention time and treatment in the vegetated deltas,
then pump back to the currently permitted ash basin discharge tower
Excavation of ash to form additional ash berms and increase the retention time within the ash basin is scheduled to
begin July 22, 2003. Also preparations. are underway to pump. wastewater from the vegetated ash delta within the
ash basin; where the selenium concentration is currently less than'3 pg/L, to -the -ash basin discharge tower. The
additional proposed.treatment options will be utilized as needed upon your approval. We anticipate completion of
the proposed pilot test by September 30, 2003.
Since the ash basin is nearing the .full pond.elevation, .your immediate review and approval of the suggested pilot test
options is requested. If you have -additional suggestions or -need -todiscuss further please contact me (704) 373-
3231 or Ron Lewis (704) 373=5710.
Sincerely,
Michael A. Ruhe, Manager
Enviromnental Support
Attachments
cc: Mr. David Goodrich, NCDENR - Raleigh
www. duke -energy. com

0

Old
Ash
Tower
Pump
to Old
Ash
Basin
Vegetated
Deltas
(Drainage
area of 65
acres)
Yard ALLEN STEAM STATION
Sumps ASH BASIN
Pump from Ash Delta to Tower
Vegetated.
Ash Delta
Add FeSO4 � •°
n
Vegetated Ash Berm
Units 4&5
Ash Sluice
J�Discharge
Tower
•......
...............
Vegetated
Ash Delta
• a
Units 1, 2, &
3 Ash Sluice

Q7,/21/03 HOM 1&:0T FA%:7048292370: ALIEN ADMIN OFF 2001
t425)88:�-4100 7/21/ 003 11:30 PAG1 _e 1/5- Fiis3riiFzic '; -
** Material.Safety Data Sheet **
Ualwae USA Inc.
6100 Carillon Point
Krldand, WA 08033
USA U VAR
W W W.unlvarus-%com
Date 07/21103
To DUKE ENERGY CORE
Attu, ROBIN JOLLY
Fax [phone]=2370...
From MARSHALL GORE at.UNiVAR USA
f-aX direct
Total pages (Incl, this one) 5
subicct I your rofct4;0c0 MSDS - FERRIC SULFATE 50
E-mail direct telephone direct 1(ixidaad. WA 98033
'IL ff For emergency assistance involving chemicals, call GHEMTREC- (800) 424 93M'
AVW
** zrMater;.al. Safety Data Sheet- **

07./21/03 MON-16-:07 FAX.[phone] ALLEN.ADMIN OFF
kms----............xvv ,,{.i. -.... _
006 09/14/00 FERRIC SULI> ATE:50%
PRODUCT -NAME: FE -3 ---FERRIC SULFATE 50%
MSDS# : P16973VS
D.LTPK ISSUED;. 10/98
SUPERSEDES.._' NEW
ISSUED BY: 006700
Manufacturer's Name: Fe -3, Inc
Business Rt, 289 North
Celina, Texas 75009
Regular -Telephone No_ 1 [phone]
Emergency Telephone No_ (80.0) 4,2.4-9300
Trade Name: Pe 3
Synonyms=•FERRIC SULFATE. SOLUTION
Shipping Name: DOT- CORROS•IVE LIQUID, N - O . S . CORROSIVE_,MATERIAL
(LIQUID FERRIC SULFATE" -50=% WATER NA 1760)
II_ HAZARDOUS INGREDIENTS
Material or Component (Typical)
Cas No_ -% w/.w.-_
Ferric Sulfate 10028-22-5 49=0
Hazard Data: Product is toxic orally, is corrosive to the eye-, and will
burn the
Free Sulfuric Acid
7664-93--9 _ S-2°_ 0
Water (balance of fozmulati.on)
Aquatic toxicity: Ferric sulfate is listed as toxic to aquatic life,
Category C. 40 CFR Parts 116 -118 -
III. PHYSICAL DATA
Boiling Point: 750 mm hg: Approx. 212 degz.F
Freezing Point: Does not freeze' at 0 deg -F
Specific Gravity (a20=I.) 1.400 to 71.455"
Vapor Pressure: NA
Vapor Density (Air=1): NA
Solubility in H2O% by Wt_: Infinite-
5%
nfinite5% Volatiles- by Vol _ : NA` '
Evaporation -.Rate_ (Butyl, -Acetate 1)
Appeaxanpe and •Odor: Reel -Brown solution. No. detectable odor_
Ph (as is) Appro:ici:mately 1 _ 0
Ph (15%,soln).Appr.oxi-mately: 4.8".
IV. FIREZ AND EXPLOSION -DATA
121002
Flash Point (Test Method): N.A.
Autoi.gni.tion Temperature: N.A.
Vlammable Limits._in Air, % by Vol-: Lower N_A_ Upper N.A.
Extinguishing Media: ,Product does not burn or suppoi;t flame. If product is
present ' in-: a -fire, water; CO2. or dry chemical may be used_ Product i s
big2iJ,y acidic and, if in. open-.cont�a.�jier avoid splashing.
Spm i:'a-1 Fixe Fighting -Fllr.o.e. -... Do -not. allow product--ar grater containing,
produgi._..to. enter, a navigable rstream_ .,At,,.temperatures, above 600 deg C,,
product. ­decomposes' --to iron oxide and.,su•rfur trioxide_
Unusual Fire & Explosion Hazard:•None'known_
V_ HEALTH HAZARD.INFORMATION
T

07/21/03 MON 16.:07.FAI-7048292370 ALLEN ADMIN OFF- X003
HEALTH, HAZARD: DATA
Route.of.Exposure: Inhalation
Hazard.Classi.fi-cation L Not determined, but expected to be low due .to
other toxicological.tests physical and chemical characteristics..
Basis for Classification: NA
Source: NA "
Route of Exposure: Skin Contact
Skin Contact: Not a primary skin irritant by FHSA standards:.
Basis for-ClassifioatioV:'Primary dermal irritation-: index.:=.0.0 for 24
and 72 hours.
Source: Laboratory test in accord with FHSA procedure—
Route of Exposure: Skin Absorption
Skin Absorption: Not toxic dermally by FHSA standards
Basis for Classification: Est_ dermal LD50 (Rabbit)= (Male) Greater than
2.0 g/kg body weight (Female) Greater than 2.0 g/kg body weight.
Source: Laboratory test in accord with FHSA procedure.
Route of Exposure: Eye Contact
Hazard Classification: Corrosive to the eye by-FHSA'standards.
Basis for Classification: Eye -irritation Scores: -
24 hours 45.2
48 hours 56.2
72 hours 56.3
7 days 63_4
Source: Laboratory test in accord with FHSA procedure. -
Route of Exposure: Ingestion
Hazard Classification: Toxic by FHSA standards -.-
Basis for Classification: Oral LD50- (Rats -male) = Between -2.5 and 5_0 g/kg
body weight. (Rat -female) = Between 2.5 and 5.0 g/kg body weight_
Source: Laboratory tests accord with FHSg procedure.
EFFECTSOF OVEREXPOSURE:
Acute --Overexposure: None -,known-except-as -1isted-in-Section V above.
Chronic Overexposure: None known except as listed in Section V above -
EMERGENCY -AND FIRST AID PROCEDURES
EYES Immediately irrigate with large amounts of water for at least 15
minutes_ Hold eyelids apart during irrigation. Send patient to a physician
immediately.
SKIN Flush with water while removing clothing and shoes. Continue to flush
for at least 15 minutes. Call a physician. wash clothes before reuse.
INHALATION Remove from area and give artificial respiration-,if-.needed.;,And
seek medical assistance.
INGESTION Treat as a corrosive liquid- Drink large. quantities:of.water. or -
milk to reduce concentration and neutralize.acid. Do not._induce:vomiting.
Call physician immediately -
VI. REACTIVITY DATA
CONDITIONS CONTRIBUTING x0 INSTABILITY:
None Known_
INCOMPATIBILITY:
Product solution is corrosive to mild steel, copper; -=`-coppery- alloys -and
galvanized steel_ May be corrosive to paints, enamels, and-boricrete_
Reacts with lime and other basic materials to form insoluble iron salts_
HAZARDOUS DECOMPOSITION PRODUCTS:

07/21/03 MON 16:08 FAX [phone] ALLEN ADMIN OFF
None normally. At temperatures above.600.deg..C, sulfur trioxide may be.
released.
CONDITIONS CONTRIBUTING TO HAZARDOUS POLYMERIZATION:
None known._
VII. DISPOSAL, SPILL OR LEAK PROCEDURE:
AQUATIC TOXICITY (e.g., 96 HR. TLM):
No data is known to be.available. EPA has rated ferric sulfate in Category
C in the Waters Program hazardous substance•.list in.40 CFR Parts 116-118.
WASTE DISPOSAL METHOD:
Neutralize with lime,. soda. -.ash; or:bicarbonate-and remove to approved
landfill._
STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED:
Prohibit product from running into streams,or navigable waters. Neutralize
and remove approved landfill. Wash.down.spill area with water_ Check with
waste treatment,.plant before flushing down-.aarge-.amounts of spilled
product_
NEUTRALIZING CHEMICALS:
Lime.(calcium carbonate, calcium hydroxide, calcium oxide)-, soda ash or
sodium bicarbonate.
VIII..- SPECIAL: PROTECTION .INFORMATION:
VENTILATION REQUIREMENTS:
No specialventilation is believed to be necessary under normal use
conditions.
SPECIFIC PERSONAL.PROTECTION EQUIPMENT;
RESPIRATORY:'
None known --.necessary under normal use: If'mists occur,, or may occur, use a
respirator.having an.activated carbon filter suitable for -sulfuric acid
mists.
EYE:
Chemical . goggles -..-should. be worn -when= handling_ thi's product --as it is
corrosive to ..the 'eye:
CLOVES
Chemical or rubber, gloves should be worn.
OTHER CLOTHING AND EQUIPMENT:
Acid resistant-clothing;is-_recommended. Safety,shoes..are recommended when
handling product in drums -a,,:
IX. SPECIAL PRECAUTIONS:
PRECAUTIONARY. STATEMENTS. -
Product --is corrosive to mild steel. and -containers -should bear a corrosive
D.O:T. label_
OTHER'HANDLING AND`-STORAGE:.:REQUIREMENTS
Liquid Ferric.Sulfate_solution.is corrosive to mild steel_ Storage and
equipment,ma,terials,should..,include„�fiberglass:; ,reinforced plastics,
plastics, rubber,,,.lead".:type-.,304 or better grades; -_of stainless steel_
ADDITIONAL REGULATORY CONCERNS:
FEDERAL:
11004

07/21/03 MON 16:08 FAX [phone]"' ALLEN ADMIN OFF 11005
FDA:
USDA:
CPSC::
TSCA: Is thi2 product, or all its ingredients, being certified for
inclusion on the Toxic Substances Control Act inventory of chemical
substances? YES.
OTHER: The ferric sulfate meets -.the AWWA-standard for Ferric Sulfate in
potable water_ Standard-IAWWA"B406787_
STATE::
OSHA: Product is a hazardous material..as defined by 29 CFR'Paragraph 1910,
1200 because it is corrosive to the eye. Product is not listed by the
National Toxicology Program, the International Agency for
Research on Cancer, -nor the Registry of Toxic Effects of Chemical
Substances (1981-82):,as._a carcinogen or-poteatial carcinogen-.
SARA TITLE;:"III: Product contains the following listed toxic_chemi.cal§:.
which are subject to the reporting requirements of Section 313 -,of Title
III -of the.Superfund Amendments. and Reauthorization Act of:
1986 (SARA TITLE III) and -40 CFR, -Part 372.
Listed -Toxic Chemical CAS# Max -% By Clgt"
Sulfuric Acid 7664-93-9 .5
--------------------------- FOR ADDITIONAL INFORMATION -----------------------_---
CONTACT: MSDS COORDINATOR UNIVAR USA INC.
DURING BUSINESS HOURS, PACIFIC TIME (425)889.-3400'
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