§ 464.41 - Specialized definitions.

§ 464.41 Specialized definitions.

For the purpose of this subpart:

(a) Total Toxic Organics (TTO). TTO is a regulated parameter under PSES (§ 464.45) and PSNS (§ 464.46) for the zinc subcategory and is comprised of a discrete list of toxic organic pollutants for each process segment where it is regulated, as follows:

(1) Casting Quench (§ 464.45(a) and § 464.46(a)):

21. 2,4,6-trichlorophenol

22. para-chloro meta-cresol

31. 2,4-dichlorophenol

34. 2,4-dimethylphenol

39. fluoranthene

44. methylene chloride (dichloromethane)

65. phenol

66. bis(2-ethylhexyl) phthalate

68. di-n-butyl phthalate

70. diethyl phthalate

85. tetrachloroethylene

(2) Die Casting (§ 465.45(b) and § 464.46(b)):

1. acenaphthene

21. 2,4,6-trichlorophenol

22. para-chloro meta-cresol

24. 2-chlorophenol

34. 2,4-dimethylphenol

44. methylene chloride (dichloromethane)

55. naphthalene

65. phenol

66. bis (2-ethylhexyl) phthalate

68. di-n-butyl phthalate

70. diethyl phthalate

85. tetrachloroethylene

86. toluene

87. trichloroethylene

(3) Melting Furnace Scrubber (§ 464.45(c) and § 464.46(c)):

31. 2,4-dichlorophenol

34. 2,4-dimethylphenol

39. fluoranthene

44. methylene chloride (dichloromethane)

55. naphthalene

65. phenol

66. bis(2-ethylhexyl) phthalate

68. di-n-butyl phthalate

85. tetrachloroethylene

86. toluene

87. trichloroethylene

(4) Mold Cooling (§ 464.45(d) and § 464.46(d)):

21. 2,4,6-trichlorophenol

22. para-chloro meta-cresol

31. 2,4-dichlorophenol

34. 2,4-dimethylphenol

39. fluoranthene

44. methylene chloride (dichloromethane)

65. phenol

66. bis(2-ethylhexyl) phthalate

68. di-n-butyl phthalate

70. diethyl phthalate

85. tetrachloroethylene

[50 FR 45247, Oct. 30, 1985; 51 FR 21762, June 16, 1986]