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Hazardous waste means any waste which by reason of any of its
physical, hemical, reactive, toxic,inflammable,explosive or
corrosive characteristics causes danger or is likely to cause danger
to health or environment, whether alone or in contact with other
wastes and substances(Hazardous wastes(Management and Handling)
Amendment Rules,2003).It includes:
a) Wastes listed in column(3) of Schedule-1 of the Hazardous
Waste(Management and Handling) Rules,1989(framed under the
Environment Protection Act,1986), as amended in 2000 and 2003.
b) Waste having constituents listed in Schedule-2 of the amendment
Rules,if their concentration is equal to more than the limit
indicated in the said Schedule.
c) Wastes listed in lists A and B of Schedule-3(Part-A) of the above
Rules applicable only in cases of import or export of hazardous
waste in accordance with Rule-12,13 and 14 , if they possess any of
the hazardous characteristics listed in Part-B of Schedule-3.
During the past couple of decades, concern for the diversity and
quality of hazardous wastes generated by industrial activities and
its effect on health and environment has increased considerably.Such
wastes are usually residues of industrial operations involving heavy
metals such as nickel,chrome,lead,mercury,etc; or utilizing
different categories of oil and petrochemicals.Wastes from
photocopiers and electronic equipments;chemicals such as
Polychlorinated Biphenyls(PCBs); and by-products such as dioxins and
furans and also recognized as extremely hazardous affecting all
forms of life.Hazardous wastes in certain cases are also generated
from process of treatment of wastewater and emissions of
industries.Depending upon their characteristics,nature, and
concentration of contaminants, some of these wastes are extremely
toxic.

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