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Title 40

Displaying title 40, up to date as of 6/05/2026. Title 40 was last amended 6/04/2026.
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§ 469.16 Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources (PSES):

(a)

Subpart A—Semiconductor PSES Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter (mg/l)
TTO 1 1.37 (2)
1 Total toxic organics.
2 Not applicable.

(b) An existing source submitting a certification in lieu of monitoring pursuant to § 469.13 (c) and (d) of this regulation must implement the solvent management plan approved by the control authority.