---
kind: "section"
citation: "40 C.F.R. § 52.252"
title: "40"
number: "52.252"
heading: "Control of degreasing operations."
url: "https://uscodex.org/cfr/40/52.252"
---

# §52.252. Control of degreasing operations.

- (a) “Degreasing” means any operation using an organic solvent as a surface cleaning agent prior to fabricating, surface coating, electroplating, or any other process.
- (b) This section is applicable in the Sacramento Valley, San Joaquin Valley, and San Francisco Bay Area Intrastate Air Quality Control Regions (the “Regions”), as described in [40 CFR part 81](/cfr/40/part81.md), dated July 1, 1979, except as follows:
  - (1) **In the following portions of the Sacramento Valley Region, this section is rescinded—**
    - (i) **Sacramento County APCD.**
    - (ii) **Placer County APCD (Mountain Counties Air Basin portion).**
    - (iii) **Yuba County APCD.**
    - (iv) **Sutter County APCD.**
- (c) Any organic emissions discharged from degreasing operations must either be reduced by at least 85 percent, or the degreasing solvent must be classified as non-photochemically reactive as defined by [paragraph (k)](/cfr/40/52.254.md?p=k) of § 52.254 not later than January 1, 1975. This regulation shall not be construed as lessening any emission control requirement specified under EPA approved regulations or [§ 52.254](/cfr/40/52.254.md). Degreasing operations using perchloroethylene or saturated halogenated hydrocarbons shall be exempt from the requirements of this section.

## Notes

### Amendments

[38 FR 31249, Nov. 12, 1973, as amended at 42 FR 42226, Aug. 22, 1977; 47 FR 15586, Apr. 12, 1982; 47 FR 18856, May 3, 1982; 47 FR 19332, May 5, 1982; 47 FR 28622, July 1, 1982]

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[38 FR 31249, Nov. 12, 1973, as amended at 42 FR 42226, Aug. 22, 1977; 47 FR 15586, Apr. 12, 1982; 47 FR 18856, May 3, 1982; 47 FR 19332, May 5, 1982; 47 FR 28622, July 1, 1982]