2,01Z^ tUNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON. D.C. 20460

FEB 2? 2012

OFFICE OF CHEMICAL SAFETYAND POLLUTION PREVENTION

Christina M. Swick, AgentSolvent Chemicals Inc.3333 Richmond AvenueHouston, TX 77098

RE: Product Name: PAK® 27 AlgaecideEPA Reg. No: 68660-9Application for Label Notification Dated January 24, 2012 to add a tablefor the same use directions already approved by the agency per PR Notice 98-10II.M.2

Dear Mrs. Swick:

The Biopesticides and Pollution Prevention Division is in receipt of your application forNotification under Pesticide Registration (PR) Notice 98-10 dated above. A preliminary screenof this request has been conducted for its applicability under PR Notice 98-10 and it has beendetermined that the action(s) requested falls within the scope of PR Notice 98-10. Our recordshave been duly noted, and the label submitted with this application has been stamped"Notification Accepted" and will be placed accordingly in our records.

If you have any questions concerning this action, please feel free to contact Ms. Menyon Adamsat (703) 347-8496 or email at adams.menyoniffepa.gov.

Sincerely,

Linda Hollis, ChiefBiochemical Pesticides BranchBiopesticides and Pollution PreventionDivision (75IIP)

Please read instructions on reverse be>

/C T 122C street' N-w- Suite 74°C3i. Washington, D.C. 20001

LJ A D D I C (~ \̂ X T telephone 202.393.3903M A K. rv 1 D U> 1 N ^ 202.393.3906Consultants in Government Affairs

January 24, 2012 HAND DELIVERED

Document Processing Desk [NOTIF]Office of Pesticide Programs (7504P)U. S. Environmental Protection AgencyRoom S-4900, One Potomac Yard2777 South Crystal DriveArlington, VA 22202-4501

ATTENTION: Linda HollisBiochemical Pesticides Branch

SUBJECT: PAK® 27 Algaecide (EPA Reg. No. 68660-9)Solvay Chemicals Inc.Notification per PR Notice 98-10Submission is NOT Subject to PRIA Fees

Dear Ms. Hollis:

On behalf of Solvay Chemicals Inc., I am submitting a notification for PAK® 27 Algaecide in accordancewith PR Notice 98-10. The purpose of this notification is to add a dosage chart to the Directions for Use.Please note that the addition of this chart does not affect the dilution ratio or the minimum\maximum usedilutions and simply provides a tabular presentation of use directions which have already been approvedby the Agency.

In support of this submission I have enclosed the following documents:

1) Application for Pesticide Notification, which includes a signed statement certifying compliancewith PR Notice 98-10,

2) One (1) copy of the proposed label with changes highlighted;3) Five (5) copies of the proposed label.

If you have any questions, or require any additional information, please feel free to contact me at 202-393-3903 ext. 16 or cswick@lewisharrison.com.

Sincerely,

Christina M. SwickAgent for Solvay Chemicals Inc.

r r r

PRECAUTIONARY STATEMENTS

HAZARDS TO HUMANS AND DOMESTIC ANIMALS

DANGER: CORROSIVECauses irreversible eye damage and causes skin burns. Do notget in eyes, on skin, or clothing. Wear goggles or face shield andrubber gloves when handling this product. Harmful if swallowedor inhaled. Avoid breathing dust. Wear protective eyewear(goggles, face shield or safety glasses). Wash thoroughly withsoap and water after handling and before eating, drinking,chewing gum, using tobacco or using the toilet. Removecontaminated clothing and wash clothing before reuse.Prolonged or frequently repeated skin contact may causeallergic reactions in some individuals. When prolonged orfrequently repeated contact could occur, use chemically resistantgloves and full body clothing.

PHYSICAL AND CHEMICAL HAZARDSOxidizing agent. Contact with combustible materials may causefire. Wet product decomposes exothermically and may causecombustion of organic materials. Pressure may increase due todecomposition in confined spaces or containers.

ENVIRONMENTAL HAZARDS/Vhen applying PAK™27 to water bodies, avoid solid particlesfrom falling on nearby ground where birds and feed may bepresent. Undissolved particles of sodium carbonateperoxyhydrate may be corrosive to beaks of birds.

Do not discharge effluent containing this product into lakes,streams, ponds, estuaries, oceans or other waters unless inaccordance with the requirements of a National PollutantDischarge Elimination System (NPDES) permit and thepermitting authority has been notified in writing prior todischarge. Do not discharge effluent containing this product intosewer systems without previously notifying the local sewagetreatment plant authority. For guidance contact your State WaterBoard or Regional Office of U.S. EPA. For additional information,refer to the product Material Safety Data Sheet.

DIRECTIONS FOR USEIt is a violation of Federal law to use this product in a manner

inconsistent with its labeling. Do not allow the product to comein contact with other pesticide products, cleaners or oxidative

agents.

-or control of blue-green algae in lakes, ponds, drinking waterreservoirs, irrigation, drainage and conveyance ditches, canals,laterals, estuaries, bayous, lagoons, water gardens and waterfeatures, impounded wster and waste water, and aquaculture_-Apply 3.0 to 10O'pounds per acre - foot (9.2 to 306.9 pounds/million gallons) of water (equivalent to 0.3 to 10.2 ppm hydrogenperoxide) by broadcasting or use of a mechanical spreader.

Notef Algae control is more easily achieved if treated soon aftergrowths-starts: Larger-amount of product may be needed to treatheavier tiloot.u. As little as 2.5 pounds per arre - foot could beused for algaestatic treatment.

PAK® 27ACTIVE INGREDIENT: .Sodium Carbonate Peroxyhydrate ..?~~85.0% p£B 3 7 ?Dl2OTHER INGREDIENTS:Total

KEEP OUT OF REACH OF CHILDRENDANGER

FIRST AIDHave the product container or label with you when calling a poison

control center or doctor, or going for treatment.

Precaution: Decaying algae can deplete dissolvedACC6Dt6d oxygen which can lead to fish kill, if excessive. Apply

with 8 to 10 hours of daylight remaining. Do notreapply within 48 hours. If treating a large lake orheavy bloom, treat 1/3 to 1/2 of the area and wait 2 to3 days before treating remainder of water. Consult withthe State agency with primary responsibility forregulating pesticides before applying to public watersto determine if a permit is needed.

STORAGE AND DISPOSALDO NOT CONTAMINATE WATER, FOOD OR

FEED BY STORAGE AND DISPOSAL

IF IN EYES: - Hold eye open and rinse slowly and gently with water for15 -20 minutes. Remove contact lenses, if present, after the first fiveminutes, then continue rinsing eye.- Call a poison control center or doctor for treatment advice.

IF ON SKIN OR CLOTHING - Take off contaminated clothing.- Rinse skin immediately with plenty of water for 15 - 20 minutes.- Call a poison control center or doctor for treatment advice.

IF INHALED: - Move person to fresh air.- If person is not breathing, call 911 or an ambulance, then give artificialrespiration, preferably mouth-to-mouth if possible.- Call a poison control center or doctor for further treatment advice.

IF SWALLOWED - Call a poison control center or doctor immediatelyfor treatment advice.- Drink promptly large quantities of water.- Do not induce vomiting unless told to do so by a poison control centeror doctor.- Do not give anything by mouth to an unconscious person.

HOT LINE NUMBER24 Hour emergency call (800) 424-9300

NOTE TO PHYSICIANProbable mucosal damage may contraindicate the use of gastric lavage.

EPA No. 68660-9Net Weight:

EPA Est. No. 68660-TX-001Lot. No.

Water TreatmentMAXIMUM Dosage Rate by Volume

GallonsDosage

20034g

50068g

750100g

1000135g

2000270g

10,0003lb.

100,00030 Ib.

325,851100 Ibs

Acre-FtDosage

Ibs

1100

9900

151500

303000

606000

757500

10010,000

STORAGE: Store in original, closed container in adry location away from heat and out of directsunlight. Keep away from combustible material.Do not return unused product to container.PESTICIDE DISPOSAL: Pesticide wastes areacutely hazardous. Improper disposal of excesspesticide spray mixture, or rinsate, is a violation ofFederal Law. For additional information, refer tothe product Material Safety Data Sheet.CONTAINER DISPOSAL50 Ib Bags/Sacks: Nonrefillable container. Do notreuse or refill this container. Offer for recycling, ifavailable. Completely empty sack [bag] intoapplication equipment. Then dispose of empty sack[bag] in a sanitary landfill or by incineration, or, ifallowed by State and local authorities, by burning. Ifburned, stay out of smoke.2000 Ib Bulk Bag: Completely empty liner by shakingsides and bottom to loosen clinging particles. Emptyresidue into application equipment. Then dispose ofliner in a sanitary landfill or by incineration, if allowedby State and local authorities. If bulk bag iscontaminated and cannot be reused, dispose of insame manner.Plastic Containers, All Sizes: Nonrefillable container.Do not reuse or refill this container. Offer for recycling,if available. Triple rinse container (or equivalent)promptly after emptying. Triple rinse as follows: Emptythe remaining contents into application equipment or amix tank. Fill the container 1A full with water andreclose. Shake or stir for 10 seconds. Pour rinsate intoapplication equipment or a mix tank or store rinsate forlater use or disposal. Drain for 1 0 seconds after theflow begins to drip. Repeat this procedure two moretimes. Puncture and dispose of in sanitary landfill, orincineration, or if allowed by state and local authorities,by burning. If burned, stay out of smoke.

Manufactured and Distributed by:SOLVAY CHEMICALS, INC.

3333 Richmond Avenue, Houston TX 77098 USA(713)525-6500

For Transport Emergency, call CHEMTREC®(800) 424-9300

1 LB= 454 grams (g) 1 Acre-Foot = 325851 gallons