subchapter_subject: "SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS"
part_code: "355"
part_subject: "EMERGENCY PLANNING AND NOTIFICATION"
subpart_code: "B"
subpart_subject: "Emergency Planning"
section_number: "355.13"
section_subject: "How do I calculate the quantity of an extremely hazardous substance present in mixtures?"
cfr_reference: "40 CFR 355.13"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 300 to 399"
revised_date: "Revised as of July 1, 2019"
publication_date: "As of July 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
---
If an EHS is present in a mixture in a particular container, determine the quantity (in pounds) of the EHS in that container by multiplying the concentration of the EHS (in weight percent) by the weight (in pounds) of the mixture in the container. If the concentration of an EHS is less than or equal to one percent in the mixture, you do not have to count that EHS. Here is an example calculation:
You have 150 pounds of a mixture that contains 20 weight percent of a certain EHS. The quantity of EHS present in the mixture is: