---
kind: "section"
citation: "40 C.F.R. § 172.50"
title: "40"
number: "172.50"
heading: "Response to a notification."
url: "https://uscodex.org/cfr/40/172.50"
---

# §172.50. Response to a notification.

- (a) EPA will review and evaluate each Notification as expeditiously as possible and will make a determination no later than 90 days after receipt of the complete Notification; however, under no circumstances shall the proposed test proceed until the submitter has received notice from EPA of its approval of such test.
- (b) For each Notification, EPA may make the following determinations:
  - (1) **Require additional information from the submitter to assess the proposed test adequately.**
  - (2) **Approve the proposed test.**
  - (3) Approve the proposed test provided that the submitter makes certain modifications to the test proposal.
  - (4) **Require an EUP for the test.**
  - (5) **Disapprove the proposed test because of the potential for unreasonable adverse effects.** Such disapproval by EPA shall be considered the equivalent of denial of an EUP and the remedies for such denial provided by [§ 172.10](/cfr/40/172.10.md) are available to the submitter.
- (c) If the proposed test is approved by EPA, then the submitter shall perform the test in the same manner described in the Notification, subject to any requirements imposed under [paragraph (b)(3)](#b-3) of this section.

## Notes

### Source

Source: 59 FR 45612, Sept. 1, 1994, unless otherwise noted.

### Authority

Authority: 7 U.S.C. 136c, 136w. Section 172.4 is also issued under 31 U.S.C. 9701.

### Source

Source: 40 FR 18782, Apr. 30, 1975, unless otherwise noted.