The U.S. Environmental Protection Agency is requiring S.H. Bell Company to maintain operations of the particulate matter ambient air monitoring network at the 10218 South Avenue O in Chicago, Illinois facility.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- S.H. Bell Section 114 Information Request (PDF)(13 pp, 823 K, February 2018)