# Imazapic-Ammonium; Pesticide Tolerances for Emergency Exemptions
> **Rule** · Final rule. · Published 1999-10-06 · Effective 1999-10-06 · 64 FR 54218
## Document
- **Document number:** 99-25842
- **Category:** pesticide
- **Federal Register citation:** 64 FR 54218
- **CFR reference:** 40 CFR 180
- **Publication date:** 1999-10-06
- **Effective date:** 1999-10-06
- **EPA docket:** OPP-300927
## Abstract

This regulation establishes time-limited tolerances for combined residues of imazapic-ammonium, (+)-2-[4,5-dihydro-4-methyl-4- (1-methylethyl)-5-oxo-1H-imidazol-2- yl]-5-methyl-3-pyridinecarboxylic acid, applied as its ammonium salt and its metabolite (+)-2-[4,5- dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5- hydromethyl-3- pyridinecarboxylic acid both free and conjugated in or on grass forage at 30 ppm; grass hay at 15 ppm; milk, fat, meat, meat byproducts (except kidney) of cattle, goats, hogs, horses, and sheep at 0.10 ppm; kidney of cattle, goats, hogs, horses, and sheep at 1 ppm. This action is in response to EPA's granting of emergency exemptions under section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act authorizing use of the pesticide on pasture/rangeland and land in the Conservation Reserve Program. This regulation establishes a maximum permissible level for residues of imazapic-ammonium and its metabolite in these food commodities. The tolerances will expire and are revoked on December 31, 2001.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/10/06/99-25842/imazapic-ammonium-pesticide-tolerances-for-emergency-exemptions)
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