Precipitator(ESP) ash, Bag Filter or dry ash, bottom ash, pond ash, and mound ash. • Fly ash was egorized as high volume low effect waste under Hazardous Wastes ( Management, Handling Tranboundary, Movement ) Rules, 2008 however, now excluded in HW Waste Rules of 2016. • Chemically, fly ash mainly consists of oxides of silica,