Guidance supplements the 12/20/1989 guidance on de minimis waste contributor settlements and sets forth procedures for identifying early de minimis candidate sites under section 122(g)(1)(A) of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA, commonly referred to as Superfund). OSWER Directive No. 9834.7-1C. Issued 6/2/1992.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.