... Recommendations, Report to Congress,EPA 530-S-9 9-0 10, March 1999.12. Ohio Administrative Code, Chapter 374 5-5 1-0 4 (B) (4), Exclusion: Identification and Listing of Hazardous Waste, June 25, 1998.13. American ... the type of coal used and the operating conditions of the boiler (10,11). Over95% of fly ash consists of oxides of silicon, aluminum, iron, and calcium, withthe remaining 5% consisting of various ... volume of CCBs produced, and enhance utilization.5.2 Use of Coal Combustion By-productsA number of applications of CCBs have been developed and demonstrated inorder to reduce the amount of CCBs...