# Pseudomonas fluorescens 4-hydroxyphenylpyruvate dioxygenase (HPPD-4); Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2017-12-04 · Effective 2017-12-04 · 82 FR 57137
## Document
- **Document number:** 2017-26086
- **Category:** pesticide
- **Federal Register citation:** 82 FR 57137
- **CFR reference:** 40 CFR 174
- **Publication date:** 2017-12-04
- **Effective date:** 2017-12-04
- **EPA docket:** EPA-HQ-OPP-2017-0115
## Abstract

This regulation establishes an exemption from the requirement of a tolerance for residues of the HPPD-4 protein derived from the 4- hydroxyphenylpyruvate dioxygenase enzyme of Pseudomonas fluorescens in or on all food commodities, when used as a plant-incorporated protectant inert ingredient. Bayer CropScience LP submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting this exemption from the requirement of a tolerance. This regulation eliminates the need under FFDCA to establish a maximum permissible level for such residues.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/12/04/2017-26086/pseudomonas-fluorescens-4-hydroxyphenylpyruvate-dioxygenase-hppd-4-exemption-from-the-requirement-of)
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