eCFR Reference Browser

---

title: "40 CFR §61.202"

source: "https://www.ecfr.gov/current/title-40/section-61.202"

title_number: "40"

volume_number: "10"

chapter_number: "Unknown"

subchapter_code: "C"

subchapter_subject: "AIR PROGRAMS (CONTINUED)"

part_code: "61"

part_subject: "NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS"

subpart_code: "R"

subpart_subject: "National Emission Standards for Radon Emissions From Phosphogypsum Stacks"

section_number: "61.202"

section_subject: "Standard."

cfr_reference: "40 CFR 61.202"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Parts 61 to 62"

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"

---

Each person who generates phosphogypsum shall place all phosphogypsum in stacks. Phosphogypsum may be removed from a phosphogypsum stack only as expressly provided by this subpart. After a phosphogypsum stack has become an inactive stack, the owner or operator shall assure that the stack does not emit more than 20 pCi/(m2-sec) (1.9 pCi/(ft2-sec)) of radon-222 into the air.

§61.202 - Standard.