Atrazine MOA iRED AMP ECO Monitoring Update Indiana - 11

1. Atrazine MOA & iREDAMP & ECO Monitoring Update Indiana - 11/3/04 

2. Overview of Three Monitoring Programs in Indiana under the Atrazine IRED/MOA Atrazine Monitoring Program (AMP) with selected Community Water Systems (CWS) on surface water - 11 CWS Stewardship Mitigation Program with specific CWS and associated watersheds - 1 CWS Ecological Monitoring Program (2004-2006) in surface water for aquatic life within specific sized watersheds - 4 sites 2004-2005, 7 sites 2005-2006

3. EPA Special Review Milestones Special Review launched in November 1994 to examine risks vs. benefits of the triazine herbicides. More than 80,000 comments from growers, universities, etc. in support of safety and benefits of atrazine. Most extensive safety testing ever conducted on a herbicide. More than 800 studies conducted on atrazine�s safety to human health and environment�200 since beginning of the Special Review. Key issues, which were basis for Special Review, were resolved. Syngenta reaches an agreement with EPA to continue our stewardship efforts through increased monitoring in CWS watersheds where atrazine is used and detected most often. Final reregistration expected 2005-06� Following conclusion of the Simazine iRED.

6. Atrazine IRED & MOA: The Highlights Atrazine classified as �not likely� to cause cancer in humans People are not at risk through dietary exposure. Monitoring in vulnerable CWS systems is now required as a condition of registration. Management is needed when triggers are exceeded. These measures, which were initiated by Syngenta over ten years ago, have resulted in a steady decline of atrazine in CWS throughout the Midwest and the South. New EPA requirement will continue to support this favorable trend.

7. Atrazine iRED & MOA: The Highlights (cont�d) No changes were required in atrazine use rates or setback requirements� Producers will maintain access to this important tool.. Innovative, site-specific approach which targets monitoring for CWS� For watersheds, which exceed specific health based triggers, watershed management plans are required. New health-based trigger for atrazine in raw water was established at 37.5 ppb TCT (on 90-day rolling average). This is protective of adults, children and infants alike. Label Harmonization will be completed to insure that all labels conform with the Syngenta label�

11. Indiana WatershedsWhich require AMP monitoring. BATESVILLE WATER UTILITY BEDFORD CITY UTILITIES FORT WAYNE - 3 RIVERS FILTRATION INDIANAPOLIS WATER CO. EAGLE CREEK WATER PLANT JASPER MUNICIPAL WATER UTILITY LOGANSPORT MUNICIPAL UTILITY-W SANTEE UTILITIES, INC. STUCKER FORK VERSAILLES WATER WORKS WESTPORT WATER COMPANY WINSLOW WATER WORKS

12. Atrazine Monitoring & Mitigation Process Baseline monitoring � SDWA Compliance Monitoring Registrants will review SDWA monitoring data for CWS on surface water (approx. 5,000 systems) in 32 primary use states. If a CWS has an annual average of 2.6 ppb TCT or greater, then the CWS enters the Atrazine Monitoring Program (AMP). Intensive Monitoring - Atrazine Monitoring Program (AMP) Involves 126 CWS�s in IA, IL, IN, OH, KS, MO, KY, TX, LA & MI. Monitoring is conducted for a 5-year timeframe. Weekly monitoring during and following application timeframe for corn (April � July) sorghum and sugarcane�. Twice a month the balance of the year. If monitoring exceeds 37.5 ppb TCT (90-day rolling average in raw water) or 3 ppb atrazine (annual average in finished drinking water), then a CWS, Watershed Mitigation Plan is required.

13. Atrazine MOA Watershed Mitigation Plan. If any of the CWS triggered into mitigation through the AMP have a second exceedence of 37.5 ppb 90 day average within five years atrazine use could be prohibited in the watershed. 8 watersheds in 6 states identified by EPA for development of watershed management plans. These were submitted 8/1/03. (Based on detected concentrations 1997-2002) Batesville, IN; Chariton, IA; Gillespie, IL; Bucklin, MO; Dearborn, MO; Lewisburg, KY; Marion, KY; Iberville, LA If any of these 8 watersheds exceed 37.5 ppb TCT (90-day rolling average in raw water) atrazine use will be prohibited in the watershed. CWS continue in Atrazine Monitoring Program (AMP) for 5 years.

14. Atrazine MOALabel Amendments All labels of products containing atrazine will be amended and will include the following language: �ANY USE OF THIS PRODUCT IN AN AREA WHERE IT IS PROHIBITED IS A VIOLATION OF FEDERAL LAW. Before using this product you must consult the Atrazine Watershed Information Center (AWIC) to determine whether the use of this product is prohibited in your watershed. The AWIC can be accessed through www.atrazine-watershed.info, (mailing address) or (866) 365-3014.�

15. Atrazine MOA: Other Requirements Atrazine registrants will monitor for atrazine concentrations and evaluate environmental exposures and mitigation could be required if unreasonable adverse effects on the environment are found. (ECO monitoring ) Atrazine Registrants shall develop and conduct a program for the monitoring of rural wells. Protocol under discussion with EPA. These requirements are placed on all primary registrants. Syngenta Crop Protection Makhteshem-Agan Drexel Chemical Platte Chemical Sipcam Agro USA Dow Agrosciences And all formulators including Monsanto, Bayer, Dupont etc�

16. Health Advisory Levels (HAL)Maximum Contaminant Level(MCL) For Atrazine HAL MCL Safety Exposure Type (ppb) (ppb) Factor 1�Day, Child 100 � 100 10�Day, Child 100 � 100 7�Year, Child 50 � 100 7�Year, Adult 200 � 100 70 Year, Adult 3a 3a 1000 a Lifetime, 70 Year HAL = MCL These were standard prior to iRED and the MCL likely to be revisited in 2005-6.

17. Atrazine (TCT) Drinking Water Level of Comparisons TCT Safety Subpopulation Exposure Type (ppb) Factor Female, 13�50 Yr. Acute 298.0 1000 Child, <1 Yr. Chronic/Intermittent 12.5/37.5 1000 Child, 1�6 Yr. Chronic 23.0 1000 Child, 7�12 Yr. Chronic 53.0 1000 Female, 13�50 Yr. Chronic 60.0 1000 Male, 13+ Yr. Chronic 68.0 1000 Seniors Chronic 68.0 1000 Proposal by EPA�OPP in Revised Human Risk Assessment For Reregistration Eligibility Decision (RED) 4/12/2002 Appendix I *Includes a 3x safety for monitoring uncertainty. With increased monitoring = 37.5ppb New Health based safety triggers published in iRED

18. Atrazine Watershed Monitoring Program