40 CFR § 415.65 - New source performance standards (NSPS).
§ 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
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
1 Within the range 6.0 to 9.0.