Tier 1: Highest concern, highest priority for phase out

Any of the following are true. All ingredients should be identified so that they can be screened using these tests.

• Products in Hazard Category I: Signal word DANGER
• Restricted use pesticides (except aquatic herbicides)
• Products that cannot be disposed of because of dioxin contamination
• Products with active ingredient on the state list of acutely dangerous wastes
• Products with known, likely, or probable carcinogens as active ingredients
• Products with reproductive toxicants as active ingredients (CA Prop 65 list)
• Products with known or probable endocrine disruptors as active ingredients
• Products labeled as highly toxic or extremely toxic to birds, aquatic species, bees, or wildlife.
• Products with active ingredients with soil half-lives greater than 100 days
• Products with active ingredients with mobility ratings high or very high or with specific label warnings about groundwater hazard.

Tier 2: Moderate concern, second priority

All products not specifically assigned to tier 1 or tier 3.

Tier 3: Lowest concern

All of the following are true. All ingredients should be identified so that they can be screened using these tests.

• Product contains no possible or probable carcinogens
• Product contains no reproductive toxicants (CA Prop 65 list)
• Product contains no ingredients listed by Illinois EPA as known, probable, or suspect endocrine disruptors
• Active ingredient has soil half-life of 30 days or less (exception for minerals)
• Active ingredient has extremely low or very low mobility in soils. Product is not labeled as toxic to fish, birds, bees, wildlife, or domestic animals.

Tier 4: Insufficient information available

Product registration or label not found or key data not located for active ingredient. Cannot assign to another tier.