1. (a) One or more of the Chemical Fume Suppressants listed in Table 93102.8 shall be used to reduce the Surface Tension of the Chrome Plating Bath(s) below the Surface Tension value listed in Table 93102.8. The Surface Tension value may be measured using either a Stalagmometer as required by Appendix 7 or a Tensiometer. The approved use of each fume suppressant is indicated in parenthesis.

   Table 93102.8: Chemical Fume Suppressants Approved for Use at Specified Surface Tensions

   Chemical Fume Suppressant and Manufacturer

   Stalagmometer Measured Surface Tension (dynes/centimeter)

   Tensiometer Measured Surface Tension (dynes/centimeter)

   Fumetrol 21 LF2® Atotech U.S.A. (Hard Chrome Plating)

   ≤ 30

   ≤ 27

   Dicolloy CRPF® ProCom LLC (Decorative plating and Chromic Acid Anodizing)

   ≤ 32

   ≤ 29

   HCA 8.4® Hunter Chemical LLC (Decorative Chrome Plating and Chromic Acid Anodizing)

   ≤ 25

   ≤ 22

   HCA-8.4® Hunter Chemical LLC (Hard Chrome Plating)

   ≤ 33

   ≤ 30

   Macuplex STR NPFX® MacDermid Enthone Industrial Solutions (Decorative Chrome Plating and Chromic Acid Anodizing)

   ≤ 32

   ≤ 30

2. (b) Alternative Chemical Fume Suppressants. Chemical Fume Suppressants not listed in Table 93102.8 may be used upon approval by the Executive Officer. The Executive Officer shall approve the use of an alternative Chemical Fume Suppressant if the following criteria are met:

   1. (1) The Chemical Fume Suppressant does not contain PFAS or any PFAS Compound;
   2. (2) The Chemical Fume Suppressant has been Source Tested under conditions that are representative of normal operations in a Hexavalent Chromium Bath and demonstrated to reduce the Hexavalent Chromium emissions below 0.01 milligrams per Ampere-Hour; and
   3. (3) In the Source Testing, the Hexavalent Chromium emission rate of 0.01 milligrams per Ampere-Hour was achieved under conditions in which the Surface Tension did not exceed 45 dynes/cm, as measured by a Stalagmometer, or 35 dynes/cm, as measured by a Tensiometer.
3. (c) A Chemical Fume Suppressant that is listed in section 93102.8(a) or that has been approved under section 93102.8(b) may no longer be used if the Executive Officer determines that the Chemical Fume Suppressant is no longer able to reduce the Hexavalent Chromium emission rate below 0.01 milligrams per Ampere-Hour under conditions in which the Surface Tension does not exceed 45 dynes/cm, as measured by a Stalagmometer, or 35 dynes/cm, as measured by a Tensiometer.

Chemical Fume Suppressants used to comply with sections 93102.4 and 93102.6(b)(1)(B) shall meet the criteria specified in this section 93102.8.

Note: Authority cited: Sections 39600, 39601, 39650, 39658, 39659 and 39666, Health and Safety Code. Reference: Sections 39650, 39658, 39659, 39665 and 39666, Health and Safety Code; and 40 Code of Federal Regulations Part 63 Subpart N.

History

1. New section filed 9-24-2007; operative 10-24-2007 (Register 2007, No. 39).

2. Amendment of section and Note filed 12-28-2023; operative 1-1-2024 pursuant to Government Code section 11343.4 (Register 2023, No. 52).