---
kind: "section"
citation: "40 C.F.R. § 63.5701"
title: "40"
number: "63.5701"
heading: "What are my options for complying with the open molding emission limit?"
url: "https://uscodex.org/cfr/40/63.5701"
---

# §63.5701. What are my options for complying with the open molding emission limit?


You must use one or more of the options listed in [paragraphs (a) through (c)](#a..c) of this section to meet the emission limit in [§ 63.5698](/cfr/40/63.5698.md) for the resins and gel coats used in open molding operations at your facility.

- (a) **Maximum achievable control technology (MACT) model point value averaging (emissions averaging) option.**
  - (1) Demonstrate that emissions from the open molding resin and gel coat operations that you average meet the emission limit in [§ 63.5698](/cfr/40/63.5698.md) using the procedures described in [§ 63.5710](/cfr/40/63.5710.md). Compliance with this option is based on a 12-month rolling average.
  - (2) Those operations and materials not included in the emissions average must comply with either paragraph [(b)](#b) or [(c)](#c) of this section.
- (b) **Compliant materials option.** Demonstrate compliance by using resins and gel coats that meet the organic HAP content requirements in Table 2 to this subpart. Compliance with this option is based on a 12-month rolling average.
- (c) **Add-on control option.** Use an enclosure and add-on control device, and demonstrate that the resulting emissions meet the emission limit in [§ 63.5698](/cfr/40/63.5698.md). Compliance with this option is based on control device performance testing and control device monitoring.

## Notes

### Source

Source: 66 FR 44232, Aug. 22, 2001, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.