Nuclear

NPDES Permit No. PA 0051926

November 16, 2009

Department of Environmental ProtectionBureau of Water Quality ManagementSoutheast Regional Office2 East Main St.Norristown, PA 19401

Subject: Exelon Limerick Generating Station - Spray Pond Chemical Additive RequestNPDES Permit No. PA 0051926

Dear Ms. Fields:

Limerick Generating Station is requesting a change to the allowable usage rates for a chemicaladditive (GE Spectrus NX 1103) that is already approved for use in the above-referencedNPDES permit. The reason for this request is to correct errors in the previously requested usagerates that were included in a letter dated 0 1/20/2006 (attached for reference). Usage of NX 1103has not yet commenced at Limerick, but will start after PA DEP approval of this request. Thecurrent MSDS for this additive is also attached.

As detailed further below, we request approval for the following usage rates for GE SpectrusNX 1103:

Average Monthly Usage Rate: 500 pounds per dayMaximum Daily Usage Rate: 1000 pounds per day

The proposed NX 1103 chemical usage locations, target concentrations, duration and frequencyof applications are all the same as described in the attached 2006 letter, which was previouslyapproved by DEP. However, we are herein making the following corrections to the previously-stated pounds and pounds per day rates compared to the 2006 letter:

1. first paragraph, last sentence: 11.25 pounds corrected to 95 pounds2. second paragraph, second sentence: 22.5 pounds corrected to 190 pounds3. second paragraph, third sentence: 45 pounds corrected to 285 pounds4. second paragraph, fourth sentence: 120 lbs/day corrected to 1000 lbs/day; and 20

lbs/day corrected to 500 lb/day

As previously stated in the 2006 letter, following implementation of NX 1103 usage, twoapplications per year of CT1300 would still be required to treat for Asiatic clams in theESW/RHRSW systems. Each application lasts for 12 hours, and typically injectsapproximately 800 pounds of CT1300 into the Spray Pond. In order to allow for continued useof CT 1300, we request that no changes to the allowable usage rates for CT 1300 be made in thepermit.

Should you have any questions regarding this information, please contact Chris Conroy at 610-718-2513. Thank you for your cooperation in this matter.

Sincerely,

Edward W. CallanPlant Manager - Limerick Generating Station

Attachments: MSDS - Spectrus NX1 103 and 01/20/2006 letter to PA DEP

cc: U.S. Nuclear Regulatory Commission, Document Control DeskH. J. Miller, Administrator, USNRC, Region 1USNRC Senior Resident Inspector, LGS

bcc: C. Gibson - (MAROG Environmental files)-KSAH. A. Ryan - S23-1P. Cowan - KSA 3-1LGS NPDES files SSB 2-2J. Toro - SSB 4-2E. Callan - GML 5-1C. Mudrick- GML 5-1J. Hunter III - SSB 2-4C. Cooney - SSB 2-2L. Birkmire-SSB 2-2C. Conroy-SSB 2-2

w/ attachmentw/attachmentw/o attachmentw/attachmentw/attachmentw/o attachment.w/o attachmentw/attachmentw/o attachmentw/o attachmentw/attachment

'Exelon Nuclear www.exeloncorp.com Nuclear

Limerick Generating Station

P.O. Box 2300Pottstown, PA 19464

NPDES PA 00051926

January 20, 2006

Ms. Jennifer Fields, P.E. CCN2Chief, Permits Section 00615017Water Management ProgramDepartment of Environmental Protection2 East Main St.Norristown, PA 19401

Subject: Spray Pond Additive for Antimicrobial Control

Reference: LGS Industrial Waste NPDES Permit # PA00051926

Dear Ms. Fields:

Limerick Generating Station is requesting the addition of GE Betz Spectrus NXI 103, an EPAapproved broad spectrum antimicrobial agent, to the list of approved chemicals. It would replaceGE Betz Spectrus CT 1300, a material used for periodic biocide treatment of Spray Pond cooledequipment. Testing has shown that the CT1300 material, which has been used for over tenyears, is no longer an effective biocide unless applied at a concentration of a75 ppm.NX1 103 would be applied at 30 ppm during a 75-minute biocide treatment twice per week.Each treatment, consisting of 11.25 pounds of product, would combine with 375,000 gallons ofthe spray pond inventory of 29,000,000 gallons, or 1.29% of the Spray Pond total volume.

NX1 103 would also be applied, on average, 1.5 times per week at 30 ppm, for a 75-minutebiocide treatment of the RHR Service Water system. Each treatment, consisting of 22.5 poundsof product; would combine the biocide with 750,000 gallons of the Spray Pond inventory, or2.57% of the Spray Pond total volume. This would yield an addition rate of about 45 pounds ofNX1 103 to the spray pond per week. Total usage rates for NX1 103 applications would be asfollows: maximum daily - 120 lbs/day, based on both ESW and all four RHR systems requiringtreatment on the same day; and average monthly - 20 lbs/day, based on weekly ESWtreatments and twice per month treatment of all RHR heat exchangers.

The treatments return to the spray pond and mix with the water inventory of 29 million gallons.The average overflow from the spray pond is approximately 20 gallons per minute, whichcombines with average Cooling tower blowdown of 6000 gpm.

After implementing NX1 103 usage, two applications per year of CT1 300 would still be requiredto treat for Asiatic clams in the ESW/RHRSW systems. Each application lasts for 12 hours, andtypically injects 25 pounds of CTI 300 into the Spray Pond.

Should you have any questions regarding this information, please contact Bob Alejnikov at 610-718-2513. Thank you for your cooperation in this matter.

Sincerely,

Christopher H. MudrickPlant Manager-LGSExelon Generation Company, LLC

Attachment- Material Safety Data Sheet- GE Betz Spectrus NX1 103

cc: S. Collins, Region 1 Administrator, USNRCS. Hansell, Resident Inspector, USNRCDocument Control Desk, USNRC, Wash. DC

bcc: R. DeGregorio - GML 5-1C. Mudrick - GML 5-1T. Tiemey - SSB 2-3M. Audette - SSB 2-3R. Alejikov - SSB 2-3T. Siglin - KSA 3NR. Kreider - SSB 2-4N. Chand - SSB 3-2

GE Betz

GE Betz, Inc.4636 Somerton RoadTrevose, PA 19053Business telephone: (215) 355-3300

. A

Material Safety Data Sheet

Issue Date: 22-MAR-2002

EMERGENCY TELEPHONE (HealthlAccident): (800) 877-1940

1 PRODUCT IDENTIFICATION

PRODUCT NAME:

SPECTRUS NX1103

PRODUCT APPLICATION AREA:

WATER-BASED MICROBIAL CONTROL AGENT.

2 COMPOSITION/ INFORMATION ON INGREDIENTS

Information for specific product ingredients as required by theU.S. OSHA HAZARD COMMUNICATION STANDARD is listed. Refer toadditional sections of this MSDS for our assessment of the potentialhazards of this formulation. This product is subject to the Pennsylvaniaand New Jersey Worker and Community Right to Know Law.

HAZARDOUS INIENTS:

CAS# CHEMICAL NAME

13590-97-1

6317-18-6

67-63-0

DODECYLGUANIDINE HYDROCHLORIDE (DGH)Corrosive

METHYLENE BIS(THIOCYANATE)Corrosive (eyes); toxic (by ingestion); irritant(skin); potential sensitizer (skin)

ISOPROPYL ALCOHOL (IPA)Flammable liquid; chronic overexposure may causeliver and kidney toxicity

No component is considered to be a carcinogen by the National ToxicologyProgram, the International Agency for Research on Cancer, or theOccupational Safety and Health Administration at Pennsylvania thresholdsfor carcinogens.

NON-HAZARDOUS INGREDIENTS:

CAS# CHEMICAL NAME

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Ii; 1 ; -

7732-18-5 WATER25322-68-3 POLYETHYLENE GLYCOL

3 HAZARDS IDENTIFICATION

EMERGENCY OVERVIEW

DANGER

Severe irritant to the skin. Skin sensitizer. Corrosive to theeyes. Vapors, gases, mists and/or aerosols cause irritation to theupper respiratory tract.

DOT hazard: Combustible liquidEmergency Response Guide #27Odor: Slight Pungent; Appearance: Yellow, Liquid

Fire fighters should wear positive pressure self-contained breathingapparatus(full face-piece type). Proper fire-extinguishing media:dry chemical/C02/foam or water--slippery condition; use sand/grit.

POTENTIAL HEALTH EFFECTS

ACMM SKIN EFFECTS:Primary route of exposure; Severe irritant to the skin. Skinsensitizer.

ACUTE ETY EFFECTS:Corrosive to the eyes.

ACfUB RESPIRATRY EFFECTS:Primary route of exposure;Vapors, gases, mists and/or aerosolscause irritation to the upper respiratory tract.

1S•:ST EFFECTS:May cause severe gastrointestinal irritation.

TARGET ORGANS:Prolonged or repeated exposures may cause primary irritantdermatitis and/or skin sensitization.

XMICAL CONDITIONS AGGRVATED:Not known.

S0i1T(OS OF EXPOSURE:Inhalation of vapors/mists/aerosols cause eye, nose, throat andlung irritation. Skin contact may cause redness, itching,dermatitis, or skin sensitization.

4 FIRST AID MEASURES

SKIN CONTACT:Wash thoroughly with soap and water. Remove contaminated clothing.Thoroughly wash clothing before reuse. Get medical attention if

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irritation develops or persists.EZY COITACT:

URGENT! Immediately flush eyes with plenty of low-pressure waterfor at least 20 minutes while removing contact lenses. Hold eyelidsapart. Get immediate medical attention.

INHALATION:Remove to fresh air. If breathing is difficult, give oxygen. Ifbreathing has stopped, give artificial respiration. Get immediatemedical attention.

INGESTION:Do not feed anything by mouth to an unconscious or convulsivevictim. Do not induce vomiting. Immediately contact physician.Dilute contents of stomach using 3-4 glasses milk or water.

NOTES TO PBYSICIANS:No special instructions

5 FIRE FIGHTING MEASURES

FIRI FIETIn= INST~tUTIONS:Fire fighters should wear positive pressure self-contained breathingapparatus (full face-piece type).

EXTINfXTfSHING b=IA:dry chemical/C02/foam or water--slippery condition; use sand/grit.

HAZARDOUS DEC(UNOSITIOQ PREODUCTS:Thermal decomposition (destructive fires) yields elemental oxides.

FLASR POINT:120F 49C SETA(CC)

MISCZLLAEOUS:Combustible liquidNA1993;Emergency Response Guide #27

6 ACCIDENTAL RELEASE MEASURES

PROTECTION AND SPILL COMTAIMENT:Ventilate area. Use specified protective equipment. Contain andabsorb on absorbent material. Place in waste disposal container.Remove ignition sources. Flush area with water. Spread sand/grit.

DISPOSAL INSTRUCTIORS:Water contaminated with this product may be sent to a sanitary sewertreatment facility, in accordance with any local agreement,a permittedwaste treatment facility or discharged under a permit. Productas is - Dispose of in approved pesticide facility or according tolabel instructions.

7 HANDLING & STORAGE

HANDLING:Combustible. Corrosive to skin and/or eyes.

STORiAG:Keep containers closed when not in use. Keep away from flames orsparks. Bond containers during filling or discharge when performedat temperatures at or above the product flash point.

S EXPOSURE CONTROLS / PERSONAL PROTECTION

zXPOsuRn LIMITS

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CHDIMCAL lam-

DODECYLGUANIDINE HYDROCHLORIDE (DGH)PEL (OSHA): NOT DETERMINEDTLV (ACGIH): NOT DETERMINED

METHYLENE BIS (THIOCYANATE)PEL (OSHA): NOT DETERMINEDTLV (ACGIH): NOT DETERMINED

ISOPROPYL ALCOHOL (IPA)PEL (OSHA): 400 PPM(500PPM-STEL)TLV (ACGIH): 400 PPM(500PPM-STEL)

ENGINEEEII CONTROLS:Adequate ventilation to maintain air contaminants below exposurelimits. -

P DS(G PROTECTIVE EQIPHQENT:Use protective equipment in accordance with 29CFR 1910 Subpart I

....PIPATOR PRnT:CTION:A RESPIRATORY PROTECTION PROGRAM THAT MEETS OSHA'S 29 CFR1910.134 AND ANSI Z88.2 REQUIREMENTS MUST BE FOLLOWED WHENEVERWORKPLACE CONDITIONS WARRANT A RESPIRATOR' S USE.USE AIR PURIFYING RESPIRATORS WITHIN USE LIMITATIONS ASSOCIATEDWITH THE EQUIPMENT OR ELSE USE SUPPLIED AIR-RESPIRATORS.If air-purifying respirator use is appropriate, use arespirator with organic vapor and HEPA cartridges.

SKIN PROTECTION:gauntlet-type neoprene gloves, chemical resistant apron--Wash off after each use. Replace as necessary.

EZ3 PROTECTIOK:splash proof chemical goggles, face shield

9 PHYSICAL & CHEMICAL PROPERTIES

Freeze Point (F) < -30Freeze Point (C) < -34Viscosity(cps 70F,21C) 64

OdorAppearancePhysical StateFlash Point SETA(CC)pH As Is (approx.)Evaporation Rate (Water=l)

Vapor Pressure (mmHG)Vapor Density (air=l)

% Solubility (water)

Slight PungentYellowLiquid120F 48C3.2< 1.00

24.0> 1.00

100.0

MR = noot applicable ND'= not detemiwh

10 STABILITY & REACTIVITY

STABILITY:Stable under normal storage conditions.

HAZARDOUS P0L7N3R=ZATIONf:Will not occur.

ICCIPA!IBhI•TIES:

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May react with strong oxidizers.DECOMPOSITION PRODUCTS:

Thermal decomposition (destructive fires) yields elemental oxides.INTERNAL PUMPOUT/CILANOUT CATEGORIES:

"B"

11 TOXICOLOGICAL INFORMATION

Oral LD50 RAT: 668 mg/kgNOTE - Rat oral LD50: 520 mg/kg in an earlier study

Dermal LD50 RABBIT: >2,000 mg/kgNOTE - Rabbit Dermal LD50: >16,000 mg/kg in an earlier study

Inhalation LC50 RAT: >2.90 mg/L/hrNOTE - Maximum achievable concentration

Skin Irritation Score RABBIT: 4.9NOTE - Skin Irritation Score: 2.46 in an earlier study,

Eye Irritation Score RABBIT: 102.NOTE - Irreversible; 21 day test, max.ave. score day 2

Skin Sensitization G.PIG: POSITIVENOTE - Magnusson & Kligman method.

12 ECOLOGICAL INFORMATION

AQUATIC TOXICOLIOGYBluegill Sunfish 96 Hour Static Acute Bioassay

LC50= 2.7; No Effect Level= 1.5 mg/LDaphnia magna 48 Hour Static Renewal Bioassay

LC50= .26; No Effect Level= .14 mg/LFathead Minnow 96 Hour Static Renewal Bioassay

LC50= 1.1; No Effect Level= .36 mg/LRainbow Trout 96 Hour Static Acute Bioassay

LC50= 2.7; No Effect Level- 1.33 mg/L

BIODEGRADATIONBOD-28 (mg/g): 518BOD-5 (mg/g): 93COD (mg/g): 1424TOC (mg/g): 418

13 DISPOSAL CONSIDERATIONS

If this undiluted product is discarded as a waste, the US RCRAhazardous waste identification number isD001=Ignitable.

Please be advised; however, that state and local requirements forwaste disposal may be more restrictive or otherwise different fromfederal regulations. Consult state and local regulations regardingthe proper disposal of this material.

14 TRANSPORT INFORMATION

DOT HAZARD: Combustible liquidUN / NA NUMBER: NA1993DOT EMERGENCY RESPONSE GUIDE #: 27

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15 REGULATORY INFORMATION

TSC.A:This is an EPA registered biocide and is exempt from TSCAinventory requirements.

CEROLX AND/OR SARA REPORTABLE QUANTITY (RQ):No regulated constituent present at OSHA thresholds

FIFRA RSGISTRATIO(1 NUMBER:3876- 121

FOOD AD DRUG ADMIRISTRATION:The ingredients in this product are approved by FDA176.300.

USDA FEDERALLY INSPECTED MEAT AND POULTRY PLANTS:SEC.G5,G7

SARA SECTION 312 HAZARD CLASS:Immediate (acute) ; Delayed(Chronic) ; Fire

SARA SECTION 302 CHiIC3LS:No regulated constituent present at OSHA thresholds

SARA SECTION 313 CHMIUCALS:No regulated constituent present at OSHA thresholds

CALIFORNIA REGOULAORY INFORIGTION

CALIFOMUIA SAFI DRINKING WULTER AND TOXIC- ACT (PROPOSITION 65) cHRuIcALS PRESENT:

No regulated constituent present at OSHA thresholdsMICHIGAN REGULATORT INFORMATION

No regulated constituent present at OSHA thresholds

16 OTHER INFORMATION

under 21 CFR

NWPA/H•XS CODE TRANSLATION

HealthFireReactivitySpecial(1) Protective Equipment

320NONED

Serious HazardModerate HazardMinimal HazardNo special HazardGoggles, Face Shield, Gloves,Apron

(1) refer to section 8 of MSDS for additional protective equipmentrecommendations.

CHANGE LOG

MSDS status:

EFFECTIVEDATE

22-JA•-199801-JUN-199812-JAN-199906-APR-199922-MAR-2002

REVISIONS TO SECTION:

83,714

SUPERCEDES

** NEW **

22-JAN-199801-JUN-199812-JAN-199906-APR-1999

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Spectrust m NXII03Microbiological Control Agent

" Broad spectrum antimicrobial

* Proprietary blend minimizes microbial resistance

" FDA Approved (CFR 176.180 and 176.300)

" USDA Approved (Gr6 G-7)

" Approved for sale in California

DESCRIPTION AND USESpectrus-l NX1 103 is EPA approved for control ofbacteria, algae, and fungi in a variety of industrialwater-based systems. Spectus NXI 103 consists of aproprietary blend of 10% dodecylguanidinehydrochloride (DGH) and 5% methylene bis (thlo-cyanate) (MBTl.

Spectrus NXI 103 Is approved for use in open recircu-lating cooling systems, heat exchange systems andevaporative condensers.

Control of microbiological populations in industrialwater systems is essential to prevent biofouling. Incooling systems, bkifouqng of heat exchange equip-ment and tower fill reduces heat transfer efficiencyand can force unscheduled shutdowns and extendedturnarounds, leading to lost production. Equipmentcan also be damaged as a result of microbiologicallyinfluenced corrosion (MIC) associated with biofouling.

Dosaws R fa d to Dddew 90%bnhilbilam (Vadmlu Mcrbee

140

120.

100-

S

c•c 0, 40_

20. I'

Consequently, blofouling must be prevented in orderfor operating units to avoid such events and achieveprofitability goal•s.. ..Compared to single active biocide products (seeChart), the combinatIon of. surfaceactivAe agent(DGH) and metabolic Inhibitor (MBT) in SpectrusNXI 103 work together to provide faster microbialcontrol at lower dosages. The blend of actives inSpectus NX1 103 also limits development of resistantmicrobial populations and reduces the need to alter-nate products to maintain effectiveness.

In addition to cooling systems, Spectrus NX1103 canbe used to control microbes in influent water systems,air washers, pasteurizers, and water-based scrub-bers. See the Spectrus NX1103 product label for acomplete listing of approved end uses.

TREATMENT AND FEEDING REQUIREMENTS

Correct treatment levels and frequency of SpectrusNXI103 addition depend on many factors. Theseinclude, but are not limited to, system cleanliness,types of microbes, nutrient concentrations, tempera-ture, pH. retention time, and other system operatingcharacteristics. Consult the product label for generaldosage guidelines. Microbiological monitoring is rec-ommended to evaluate product requirements.Consult your GE Betz representative for technicaladvice on your specific application.

In all cases, this product must be applied in accor-dance with use instructions on the Spectrus NX1 103labes.

Feed point - Apply Spectrus NXI 103 to a point in thesystem where turbulence and flow patterns assuregood mixing with the water being treated.

N*NXI 103 0 D8NPA 0 QmwwoiyeF.W

(*Based on lob -dIg mug pun. ahureW krie dosageuindicale tipf P p .i arfamum ) wwgem

FK M IM 0aM, E er, WLA r4 •;lt ewvL

- Dilutioh - This blended product is best fed neat (undi-luted) from the storage container.

Compatible Matedals - Spectrus NXI 103 Is compati-ble with the following materials of construction: 316LStainless; Hastalloy 825; High Density Cross-linkedPolyethylene; Teflon; PVC; Buna N; Buna S; EthylenePropylene Resin.

Avoid: 304 and 316, Stainless; High DensityPolypropylene;, Litharge Viton.

This product may be fed using the PaceSetterTM

Control system.

GENERAL PROPERTIESPhysical properties of Spectrus NX1103 are shownon the Material Safety Data Sheet, a copy of which isavailable on request.

PACKAGING INFORMATION.

Spectrus NXI 103 is a liquid blend available In a wide-variety of containers and delivery methods. inciudingGE Betz's ChemSurelu Drumless Delivery Services.

STORAGEProtect from extreme temperatures. Store in a coal,ventilated location. Keep containers closed when notin use. Store away from oxidizers.

SAFETY PRECAUTIONSUse of eye protection (goggles and face shield) andgauntlet-type rubber gloves is required when handlingthis product See section 7 of the MSDS for additionalinformation on recommended personal protectiveequipment.

GENERAL INFORMATIONEPA Registration Number 3876-121

www gebetz com

P-CMM2 21 CMOB GE 8W, Imr M r'•h ramr.W.

GEWater & Process Technologies

Material Safety Data Sheet Issue Date: 17-SEP-2009Supercedes: 17-APR-2009

SPECTRUS NX1103

1 IdentificationIdentification of substance or preparationSPECTRUS NX1 103

Product Application AreaWater-based microbial control agent.

Company/Undertaking IdentificationGE Betz, Inc.4636 Somerton RoadTrevose, PA 19053T 215 355-3300, F 215 953 5524

Emergency Telephone(800) 877-1940

Prepared by Product Stewardship Group: T 215-355-3300 Prepared on: 17-SEP-2009

2 Hazard(s) identification

EMERGENCY OVERVIEW

DANGER

Corrosive. May be absorbed by skin. Skin sensitizer. Corrosive tothe eyes. Vapors, gases, mists and/or aerosols cause irritation tothe upper respiratory tract.

DOT hazard: Combustible liquidOdor: Slight Pungent; Appearance: Yellow, Liquid

Fire fighters should wear positive pressure self-contained breathing.apparatus(full face-piece type). Proper fire-extinguishing media:dry chemical/C02/foam or water--slippery condition; use sand/grit.

POTENTIAL HEALTH EFFECTS

ACUTE SKIN EFFECTS:Primary route of exposure; Corrosive. May be absorbed by skin. Skinsensitizer.

ACUTE EYE EFFECTS:Corrosive to the eyes.

ACUTE RESPIRATORY EFFECTS:Primary route of exposure;Toxic;Vapors, gases, mists and/or

Substance or Preparation: SPECTRUS NX1 103 Page 1

aerosols cause irritation to the upper respiratory tract.

INGESTION EFFECTS:May cause severe gastrointestinal irritation.

TARGET ORGANS:Prolonged or repeated exposures may cause primary irritantdermatitis and/or skin sensitization.

MEDICAL CONDITIONS AGGRAVATED:Not known.

SYMPTOMS OF EXPOSURE:Inhalation of vapors/mists/aerosols cause eye, nose, throat and

lung irritation. Skin contact may cause redness, itching,

dermatitis, or skin sensitization.

3 Composition / information on ingredients

Information for specific product ingredients as required by theU.S. OSHA HAZARD COMMUNICATION STANDARD is listed. Refer toadditional sections of this MSDS for our assessment of the potential

hazards of this formulation.

HAZARDOUS INGREDIENTS:

Cas# Chemical Name Range (w/w%)

13590-97-1 DODECYLGUANIDINE HYDROCHLORIDE (DGH) 7-13Corrosive

6317-18-6 METHYLENE BIS(THIOCYANATE) 5-10Corrosive (eyes); toxic (by ingestion); irritant(skin); potential sensitizer (skin)

67-63-0 2-PROPANOL 3-7Flammable liquid; eye and respiratory irritant; CNS

depressant; IARC=3 (carcinogen status notclassifiable); chronic overexposure may cause liverand kidney toxicity; fetotoxic and developmental

4 First-aid measures

SKIN CONTACT:Wash thoroughly with soap and water. Remove contaminated clothing.Thoroughly wash clothing before reuse. Get medical attention ifirritation develops or persists.

EYE CONTACT:URGENT! Immediately flush eyes with plenty of low-pressure waterfor at least 20 minutes while removing contact lenses. Hold eyelidsapart. Get immediate medical attention.

INHALATION:Remove to fresh air. If breathing is difficult, give oxygen. If

breathing has stopped, give artificial respiration. Get immediatemedical attention.

INGESTION:Do not feed anything by mouth to an unconscious or convulsive

Substance or Preparation: SPECTRUS NX1 103 Page 2

victim. Do not induce vomiting. Immediately contact physician.Dilute contents of stomach using 2-8 fluid ounces (60-240 mL) ofmilk or water.

NOTES TO PHYSICIANS:No special instructions

5 Fire-fighting measures

FIRE FIGHTING INSTRUCTIONS:Fire fighters should wear positive pressure. self-contained breathing

apparatus (full face-piece type).EXTINGUISHING MEDIA:

dry chemical/C02/foam or water--slippery condition; use sand/grit.HAZARDOUS DECOMPOSITION PRODUCTS:

oxides of carbon, nitrogen, and sulfur; and hydrogen chlorideFLASH POINT:

120F 49C SETA(CC)MISCELLANEOUS:

Combustible liquidNA 1993;Emergency Response Guide #128

6 Accidental release measures

PROTECTION AND SPILL CONTAINMENT:Ventilate area. Use specified protective equipment. Contain andabsorb on absorbent material. Place in waste disposal container.Remove ignition sources. Flush area with Water. Spread sand/grit.

DISPOSAL INSTRUCTIONS:Water contaminated with this product may be sent to a sanitary sewertreatment facility,in accordance with any local agreement,a permittedwaste treatment facility or discharged under a permit. Productas is - Dispose of in approved pesticide facility or according tolabel instructions.

7 Handling and storage

HANDLING:

Combustible. Bond and ground containers during filling ordischarge. Do not use near sparks, flames or sources of ignition.Corrosive to skin. Corrosive to eyes.

STORAGE:Shelf life = 180 days. Keep containers closed when not in use.Store in cool ventilated location. Store away from oxidizers. Keep.away from flames or sparks.

8 Exposure controls / personal protection

EXPOSURE LIMITSCHEMICAL NAME

DODECYLGUANIDINE HYDROCHLORIDE (DGH)PEL (OSHA) : NOT DETERMINEDTLV (ACGIH): NOT DETERMINED

METHYLENE BIS(THIOCYANATE)

Substance or Preparation: SPECTRUS NX1 103 Page 3

PEL (OSHA): NOT DETERMINEDTLV (ACGIH): NOT DETERMINED

2-PROPANOLPEL (OSHA): 400 PPMTLV (ACGIH): TWA = 200 PPM; STEL = 400 PPM; A4

ENGINEERING CONTROLS:Adequate ventilation to maintain air contaminants below exposurelimits.

PERSONAL PROTECTIVE EQUIPMENT:Use protective equipment in accordance with 29CFR 1910 Subpart I

RESPIRATORY PROTECTION:A RESPIRATORY PROTECTION PROGRAM THAT MEETS OSHA'S 29 CFR1910.134 AND ANSI Z88.2 REQUIREMENTS MUST BE FOLLOWED WHENEVERWORKPLACE CONDITIONS WARRANT A RESPIRATOR'S USE.

USE AIR PURIFYING RESPIRATORS WITHIN USE LIMITATIONS ASSOCIATEDWITH THE EQUIPMENT OR ELSE USE SUPPLIED AIR-RESPIRATORS.If air-purifying respirator use is appropriate, use- arespirator with organic vapor and HEPA cartridges.

SKIN PROTECTION:gauntlet-type butyl or neoprene gloves, chemical resistantapron -- Wash off after each use. Replace as necessary.

EYE PROTECTION:splash proof chemical goggles, face shield

9 Physical and chemical properties

Spec. Grav.(70F,21C) 1.095Freeze Point (F) < -30Freeze Point (C) < -34Viscosity.(cps 70F,21C) 64

OdorAppearancePhysical StateFlash Point SETA(CC)pH As Is (approx.)Evaporation Rate (Water=l)Percent VOC:

NA = not applicable ND = not det

10 Stability and reactivity

Vapor Pressure (mmHG)Vapor Density (air=l)

% Solubility (water)

Slight PungentYellowLiquid120F 48C3.2< 1.00

4.8

24.0> 1.00

< 1.0

aermined

CHEMICAL STABILITY:Stable under normal storage conditions.

POSSIBILITY OF HAZARDOUS REACTIONS:Friction, heat or other sources of ignition may cause a violentreaction releasing heat and toxic fumes. Contact with oxidizers maycause fire or explosion.

INCOMPATIBILITIES:May react with strong oxidizers.

DECOMPOSITION PRODUCTS:oxides of carbon, nitrogen, and sulfur; and hydrogen chloride

Substance or Preparation: SPECTRUS NX1 103 Page 4

11 Toxicological information

Oral LD50 RAT: 668 mg/kgNOTE - Rat oral LD50: 520 mg/kg in an earlier study

Dermal LD50 RABBIT: >2,000 mg/kg

NOTE - Rabbit Dermal LD50: >16,000 mg/kg in an earlier studyInhalation LC50 RAT: >2.90 mg/L/hr

NOTE - Maximum achievable concentrationSkin Irritation Score RABBIT: 4.9

NOTE - Skin Irritation Score: 2.46 in an earlier studyEye Irritation Score RABBIT: 102

NOTE - Irreversible; 21 day test, max.ave. score day 2Skin Sensitization G.PIG: POSITIVE

NOTE - Magnusson & Kligman method

12 Ecological information

AQUATIC TOXICOLOGYBluegill Sunfish 96 Hour Static Acute Bioassay

LC50= 2.7; No Effect Level= 1.5 mg/LDaphnia magna 48 Hour Static Renewal Bioassay

LC50= .26; No Effect Level= .14 mg/LFathead Minnow 96 Hour Static Renewal Bioassay

LC50= 1.1; No Effect Level= .36 mg/LRainbow Trout 96 Hour Static Acute Bioassay

LC50= 2.7; No Effect Level= 1.33 mg/L

BIODEGRADATIONBOD-28 (mg/g): 518BOD-5 (mg/g) : 93COD (mg/g): 1424TOC (mg/g) : 418

13 Disposal considerations

If this undiluted product is discarded as a waste, the US RCRAhazardous waste identification number isD001=Ignitable.

Please be advised; however, that state and local requirements forwaste disposal may be more restrictive or otherwise different fromfederal regulations. Consult state and local regulations regardingthe proper disposal of this material.

14 Transport information

DOT HAZARD: Combustible liquidPROPER SHIPPING NAME: COMBUSTIBLE LIQUID, N.O.S.(ISOPROPYL

ALCOHOL SOLUTION)NA 1993, PG III

DOT EMERGENCY RESPONSE GUIDE #: 128Note: Some containers may be DOT exempt, please check BOL forexact container classification

Substance or Preparation: SPECTRUS NX1 103 Page 5

15 Regulatory information

TSCA:This is an EPA registered biocide and is exempt from TSCAinventory requirements.

CERCLA AND/OR SARA REPORTABLE QUANTITY (RQ):No regulated constituent present at OSHA thresholds

FIFRA REGISTRATION NUMBER:3876- 121

FOOD AND DRUG ADMINISTRATION:The ingredients in this product are approved by FDA under 21 CFR176.300.

NSF Registered and/or meets USDA (according to 1998 Guidelines):Registration number: Not RegisteredG5, G7

SARA SECTION 312 HAZARD CLASS:Immediate(acute);Delayed(Chronic);Fire

SARA SECTION 302 CHEMICALS:No regulated constituent present at OSHA thresholds

SARA SECTION 313 CHEMICALS:No regulated constituent present at OSHA thresholds

CALIFORNIA REGULATORY INFORMATION

CALIFORNIA SAFE DRINKING WATER AND TOXICENFORCEMENT ACT (PROPOSITION 65):

This product contains one or more ingredients at trace levels knownto the state of California to cause cancer and reproductivetoxicity.

MICHIGAN REGULATORY INFORMATION

No regulated constituent present at OSHA thresholds

16 Other information

HMIS VII CODE TRANSLATION

HealthFireReactivitySpecial(1) Protective Equipment

(1) refer to section 8recommendations.

3 Serious Hazard2 Moderate Hazard0 Minimal HazardCORR DOT corrosiveD Goggles,Face Shield,Gloves,Apron

of MSDS for additional protective equipment

CHANGE LOG

MSDS status:

EFFECTIVEDATE

03-OCT-199702-DEC-199723-DEC-199701-JUN-199812-JAN-199906-APR-199922-MAR-200228-APR-2003

REVISIONS TO SECTION:

1515

83,7

SUPERCEDES

** NEW **

03-OCT-199702-DEC-199723-DEC-199701-JUN-199812-JAN-1999063-APR-199922-MAR-2002

49

Substance or Preparation: SPECTRUS NX1 103 Page 6

07-MAY-200817-APR-200917-SEP-2009

4, 5, 7, 10, 153,7,102,7,8,10,16

28-APR-200307-MAY-200817-APR-2009

Substance or Preparation: SPECTRUS NX1 103 Page 7