How do I determine the total quantity of a Release-Toxic Chemical of Interest?
For more information on this topic, please reference page 30-31 of the CSAT Top-Screen User’s Manual http://www.dhs.gov/xlibrary/assets/chemsec_csattopscreenusersmanual.pdf (PDF, 88 pages – 1.3 MB). Referenced Text: In determining whether a facility possesses COI that meet or exceed the STQ, the facility shall consider the release-toxic minimum concentration provision in 6 CFR §27.204(a)(1). • If a release-toxic COI is present in a mixture, and the concentration of the chemical is equal to or greater than one percent (1%) by weight, a facility shall count the amount of the release-toxic COI in the mixture toward the STQ. For example, if a facility has 500 pounds of a toxic mixture containing five percent (5%) acrolein, the facility should count five percent (5%) of the weight of the mixture, or 25 pounds of acrolein, toward the STQ of 5,000 pounds. • If a release-toxic COI is present in a mixture, and the concentration of the chemical is less than one percent (1%) by weight of the mixt
