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e-CFR data is current as of November 24, 2020

Title 40Chapter ISubchapter NPart 464Subpart D → §464.41


Title 40: Protection of Environment
PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY
Subpart D—Zinc Casting Subcategory


§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]

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