Answer:

PCB

Answer	Crossword Clue
PCB	1976 Toxic Substances Control Act substance
PCB	Toxic chemical
PCB	Dangerous insulation mtl.

PCB	Chem. contaminant
PCB	Hudson River polluter, initially
PCB	Chem. pollutant
PCB	Pollutant banned in the U.S. in 1979
PCB	Pollutant found in NCR paper
PCB	Banned chem. contaminant
PCB	Pollutant banned by Cong. in 1979
PCB	Toxic compound, briefly

PCB	Chemical banned by the EPA
PCB	Highly toxic chemical (abbr.)
PCB	Chemical contaminant, for short
PCB	Banned chemical pollutant, for short
PCB	Hudson River pollutant, initially
PCB	Banned toxic pollutant, for short
PCB	EPA concern
PCB	Banned chem. pollutant

PCB	Chemical formerly used in carbonless copy paper manufacture
PCB	Controversial chemical
PCB	Controversial chemical: Abbr.
PCB	Toxic compound: Abbr.
PCB	Pollutant banned by the EPA
PCB	Toxic environmental pollutant, for short
PCB	Chemical pollutant, for short
PCB	A water pollutant

PCB	Chemical pollutant
PCB	Banned chemical compound
PCB	Toxic compound, for short
PCB	Wildlife threat, briefly
PCB	Outlawed pollutant, for short
PCB	Toxic pollutant, for short
PCB	Toxic chemical, for short
PCB	Environmental pollutant, for short

PCB	Banned organic compound, for short
PCB	E.P.A.-proscribed compound, for short
PCB	Water pollutant
PCB	Banned chemical
PCB	Banned pollutant, in brief