---
kind: "section"
citation: "40 C.F.R. § 74.28"
title: "40"
number: "74.28"
heading: "Allowance allocation for combustion sources becoming opt-in sources on a date other than January 1."
url: "https://uscodex.org/cfr/40/74.28"
---

# §74.28. Allowance allocation for combustion sources becoming opt-in sources on a date other than January 1.

- (a) **Dates of entry.**
  - (1) If an opt-in source provided monthly data under [§ 74.20](/cfr/40/74.20.md), the opt-in source's opt-in permit may become effective at the beginning of a calendar quarter as of January 1, April 1, July 1, or October 1.
  - (2) If an opt-in source provided annual data under [§ 74.20](/cfr/40/74.20.md), the opt-in source's opt-in permit must become effective on January 1.
- (b) **Prorating by Calendar Quarter.** Where a combustion source's opt-in permit becomes effective on April 1, July 1, or October 1 of a given year, the Administrator will prorate the allowance allocation for that first year by the calendar quarters remaining in the year as follows:
  - (1) For combustion sources that commenced operations before January 1, 1985,
  - (2) For combustion sources that commenced operations after January 1, 1985,
  - (3) Under [paragraphs (b)](#b) (1) and (2) of this section,
    - (i) “Remaining calendar quarters” shall be the calendar quarters in the first year for which the opt-in permit will be effective.
    - (ii) Fuel consumption for remaining calendar quarters =

## Notes

### Authority

Authority: 42 U.S.C. 7601 and 7651 et seq.

### Source

Source: 60 FR 17115, Apr. 4, 1995, unless otherwise noted.