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  Cal/EPA


California
Environmental
Protection
Agency

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Department of
Pesticide
Regulation

1020 N Street
Sacramento, CA
95814-5624
(916) 445-4300


Branches:

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Registration

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and Safety

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  California Notice 98-1
  POST UNTIL April 10, 1998

NOTICE OF FINAL DECISION CONCERNING REEVALUATION OF PESTICIDE PRODUCTS

The Director of the Department of Pesticide Regulation (DPR), pursuant to Articles 8 and 12 (Title 3) of the California Code of Regulations, files this notice concerning the reevaluation of pesticide products with the Secretary of the Resources Agency for posting. This notice must remain posted for a period of 30 days for public inspection.

REEVALUATION

DPR commenced reevaluation of pesticide products containing thiophanate-methyl March 29, 1991. The following is a list of currently registered pesticide products containing thiophanate-methyl an active ingredient

REGISTRANT
BRAND NAME
U.S. EPA REG. NO

Elf Atochem North America Inc. Topsin M 70W 4581-322-ZA
  Topsin M 4.5F Fungicide 4581-352-AA
  Topsin M WSB 4581-377-AA
Gustafson Inc. Gustafson Tops 2.5D Potato Seed-Piece Treatment Fungicide Dust 7501-32-AA
  Tops 5 Potato Seed-Piece Treatment Fungicide 7501-149-AA
  Tops MZ Potato Seed-Piece Treatment Fungicide 7501-157-AA
O.M. Scott & Sons Company Systemic Fungicide 538-88-ZB
  Lawn Fungus Control 538-88-ZC
  Proturf Fluid Fungicide 538-183-AA
  Proturf Fertilizer Plus Fungicide VIII 538-194-AA
  Turf Builder Plus Fungus Control 538-217-ZA
Regal Chemical Company Systec 1998 48234-12-AA
  Systec 1998 WDG 48234-13-AA
Scotts-Sierra Crop Protection Co. Fungo Flo Liquid Flowable Systemic Turf and Ornamental Fungicide 4581-352-AA-58185
  Domain Fl Broad Spectrum Systemic Fungicide for Ornamentals 4581-352-ZA-58185
  Fungo 50 WSB Wettable Powder Turf and Ornamental Systemic Fungicide 58185-30-AA
  Domain 50 WP Ornamental Fungicide in Water Soluble Bags 58185-30-ZA
  Fungo 50 WSB 58185 30-ZB
  Duosan WSB Wettable Powder Turf and Ornamental Fungicide in Water Soluble Bags 58185-31-AA
  Zyban (R) WSB Broad Spectrum Systemic-Contact Fungicide 58185-31-ZA
  Zyban WSB Wettable Powder Turf and Ornamental Fungicide in Water Soluble Bags 58185-31-ZB
  Fungo Flo 58185-33-AA
Sureco, Inc. Black leaf Rose & Ornamental Fungicide 1001-63-AA-5887
W.A. Cleary Chemical Corp. 3336 WP Turf and Ornamental Fungicide in Water Soluble Bags 1001-63-AA
  3336 F 1001-69-AA
  3336 G 1001-70-AA

BASIS OF REEVALUATION

DPR initiated the reevaluation based upon several illnesses that occurred over a two-month period in a group of 11 potato processing workers. DPR received five illness reports involving this group of potato processing workers. The illnesses included transient eye irritation and skin rashes in all five workers and short-term fevers in two of the workers. The most serious medical problem was the development by the workers of an asthma-like illness known as reactive airways disease. DPR placed all products containing thiophanate-methyl into reevaluation, even though at the time only one product was registered for use as a fungicide on potato seed pieces.

SUMMARY OF REEVALUATION

Effective February 11, 1992, DPR adopted a regulation restricting the use of thiophanate-methyl for the treatment of potato seed pieces. The regulation requires employers to assure that their employees handling thiophanate-methyl wear respiratory protection approved for dusts by the National Institute of Occupational Safety and Health and the Mine Safety and Health Administration.

Additionally, the manufacturer submitted a complete set of acute toxicity studies and a subacute inhalation study. After reviewing each of the products, DPR asked several registrants to mitigate potential respiratory hazards from the use of their products.

FINAL REGULATORY DECISION

DPR has determined that the labels of currently registered pesticide products containing thiophanate-methyl bear precautionary statements and personal protective equipment requirements that are adequate to mitigate possible acute toxicity hazards. Therefore, the reevaluation of products containing thiophanate-methyl is hereby concluded.

For information regarding this final decision, contact Ms. Ann Prichard, Senior Environmental Research Scientist, Pesticide Registration Branch, by E-mail at (aprichard@cdpr.ca.gov)
or by telephone at (916) 324-3931.

original signed by Barry Cortez


2-23-98


Barry Cortez, Chief
Pesticide Registration Branch
(916) 445-4377

Date

California State Seal

Pete Wilson
Governor

Peter Rooney

Secretary for
Environmental
Protection



James
W. Wells
Director