# Escherichia coli O157:H7 Specific Bacteriophages; Temporary Exemption From the Requirement of a Tolerance
> **Rule** · Final rule. · Published 2011-04-13 · Effective 2011-04-13 · 76 FR 20542
## Document
- **Document number:** 2011-8712
- **Category:** pesticide
- **Federal Register citation:** 76 FR 20542
- **CFR reference:** 40 CFR 180
- **Publication date:** 2011-04-13
- **Effective date:** 2011-04-13
- **EPA docket:** EPA-HQ-OPP-2010-0274
## Abstract

This regulation establishes a temporary exemption from the requirement of a tolerance for residues of lytic bacteriophages that are specific to Escherichia coli O157:H7, sequence negative for shiga toxins I and II, and grown on atoxigenic host bacteria when applied/ used on food contact surfaces in food processing plants in accordance with the terms of Experimental Use Permit (EUP) No. 74234-EUP-2. Intralytix, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting the temporary tolerance exemption. This regulation eliminates the need to establish a maximum permissible level for residues of lytic bacteriophages that are specific to Escherichia coli O157:H7, sequence negative for shiga toxins I and II, and grown on atoxigenic host bacteria. The temporary tolerance exemption expires on April 1, 2013.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/04/13/2011-8712/escherichia-coli-o157h7-specific-bacteriophages-temporary-exemption-from-the-requirement-of-a)
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