---
kind: "section"
citation: "6 C.F.R. § 27.203"
title: "6"
number: "27.203"
heading: "Calculating the screening threshold quantity by security issue."
url: "https://uscodex.org/cfr/6/27.203"
---

# §27.203. Calculating the screening threshold quantity by security issue.

- (a) **General.** In calculating whether a facility possesses a chemical of interest that meets the STQ for any security issue, a facility need not include chemicals of interest:
  - (1) Used as a structural component;
  - (2) Used as products for routine janitorial maintenance;
  - (3) Contained in food, drugs, cosmetics, or other personal items used by employees;
  - (4) In process water or non-contact cooling water as drawn from environment or municipal sources;
  - (5) In air either as compressed air or as part of combustion;
  - (6) Contained in articles, as defined in [40 CFR 68.3](/cfr/40/68.3.md);
  - (7) In solid waste (including hazardous waste) regulated under the Resource Conservation and Recovery Act, [42 U.S.C. 6901](/usc/42/6901.md) et seq., except for the waste described in [40 CFR 261.33](/cfr/40/261.33.md); or
  - (8) In naturally occurring hydrocarbon mixtures prior to entry of the mixture into a natural gas processing plant or a petroleum refining process unit. Naturally occurring hydrocarbon mixtures include condensate, crude oil, field gas, and produced water as defined in [40 CFR 68.3](/cfr/40/68.3.md).
- (b) **Release chemicals—**
  - (1) **Release-toxic, release-flammable, and release-explosive chemicals.** Except as provided in paragraphs [(b)(2)](#b-2) and [(b)(3)](#b-3), in calculating whether a facility possesses an amount that meets the STQ for release chemicals of interest, the facility shall only include release chemicals of interest:
    - (i) In a vessel as defined in [40 CFR 68.3](/cfr/40/68.3.md), in a underground storage facility, or stored in a magazine as defined in [27 CFR 555.11](/cfr/27/555.11.md);
    - (ii) In transportation containers used for storage not incident to transportation, including transportation containers connected to equipment at a facility for loading or unloading and transportation containers detached from the motive power that delivered the container to the facility;
    - (iii) Present as process intermediates, by-products, or materials produced incidental to the production of a product if they exist at any given time;
    - (iv) In natural gas or liquefied natural gas stored in peak shaving facilities; and
    - (v) In gasoline, diesel, kerosene, or jet fuel (including fuels that have flammability hazard ratings of 1, 2, 3, or 4, as determined by using National Fire Protection Association (NFPA) 704: Standard System for the Identification of the Hazards of Materials for Emergency Response [2007 ed.], which is incorporated by reference at [§ 27.204(a)(2)](/cfr/6/27.204.md?p=a-2)), stored in aboveground tank farms, including tank farms that are part of pipeline systems;
  - (2) **Release-toxic, release-flammable, and release-explosive chemicals.** Except as provided in [paragraph (b)(2)(i)](#b-2-i), in calculating whether a facility possesses an amount that meets the STQ for release-toxic, release-flammable, and release-explosive chemicals, a facility need not include release-toxic, release-flammable, or release-explosive chemicals of interest that a facility manufactures, processes, or uses in a laboratory at the facility under the supervision of a technically qualified individual as defined in [40 CFR 720.3](/cfr/40/720.3.md).
    - (i) This exemption does not apply to specialty chemical production; manufacture, processing, or use of substances in pilot plant scale operations; or activities, including research and development, involving chemicals of interest conducted outside the laboratory.
    - (ii) [Reserved]
  - (3) **Propane.** In calculating whether a facility possesses an amount that meets the STQ for propane, a facility need not include propane in tanks of 10,000 pounds or less.
- (c) **Theft and diversion chemicals.** In calculating whether a facility possesses an amount of a theft/diversion chemical of interest that meets the STQ, the facility shall only include theft/diversion chemicals of interest in a transportation packaging, as defined in [49 CFR 171.8](/cfr/49/171.8.md). Where a theft/diversion-CW chemical is designated by “CUM 100g,” a facility shall total the quantity of all such designated chemicals in its possession to determine whether the facility possesses theft/diversion-CW chemicals that meet or exceed the STQ of 100 grams.
- (d) **Sabotage and contamination chemicals.** A facility meets the STQ for a sabotage/contamination chemical of interest if it ships the chemical and is required to placard the shipment of that chemical pursuant to the provisions of [subpart F](/cfr/6/subpartF.md) of [49 CFR part 172](/cfr/49/part172.md).

## Notes

### Amendments

[72 FR 65419, Nov. 20, 2007, as amended at 86 FR 41891, Aug. 4, 2021]

### Authority

Authority: 6 U.S.C. 624; Pub. L. 101-410, 104 Stat. 890, as amended by Pub. L. 114-74, 129 Stat. 599; Pub. L. 113-254, 128 Stat. 2898, as amended by Pub. L. 116-150, 134 Stat. 679.

### Source

Source: 72 FR 17729, Apr. 9, 2007, unless otherwise noted.

### Amendments

[72 FR 65419, Nov. 20, 2007, as amended at 86 FR 41891, Aug. 4, 2021]