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Title 40

Displaying title 40, up to date as of 6/15/2026. Title 40 was last amended 6/15/2026.
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§ 415.65 New source performance standards (NSPS).

(a) Any new source subject to this subpart and using the mercury cell process must achieve the following new source performance standards (NSPS):

Subpart F—Chlor-Alkali-Mercury Cells

Pollutant or pollutant property NSPS limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kq/kkg (or pounds per 1,000 lb) of product
TSS 0.64 0.32
Mercury (T) 0.00023 0.00010
Total Residual Chlorine 0.0032 0.0019
pH (1) (1)
1 Within the range 6.0 to 9.0.

(b) Any new source subject to this subpart and using the diaphragm cell process must achieve the following new source performance standards (NSPS):

Subpart F—Chlor-Alkali-Diaphragm Cells

Pollutant or pollutant property NSPS limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kq/kkg (or pounds per 1,000 lb) of product
TSS 1.1 0.51
Lead (T) 0.0047 0.0019
Total Residual Chlorine 0.013 0.0079
pH (1) (1)
1 Within the range 6.0 to 9.0.