EL DORADO COUNTY AIR QUALITY MANAGEMENT DISTRICT

RULE 922 - REQUIREMENTS FOR HARD CHROME PLATING AND CHROMIC ACID ANODIZING FACILITIES
(Adopted November 20, 1989)

1. The owners or operators of all hard chrome plating and chromic acid anodizing facilities shall maintain a continuous record of current integrated over time (ampere-hours) for all plating tanks which have a common collection system for use in hard chrome plating or chromic acid anodizing operations. Within six months after district adoption of this regulation the owner/operator shall submit the information as required in Rule 922 A to the district A.P.C.D. and upon request thereafter.
2. No person shall operate a plating tank for hard chrome plating or chromic acid anodizing unless the tank has an emissions collection system which meet the following requirements:
   1. the chromium emissions from the emissions collection system serving the plating tank have been reduced by 95 percent or more of the uncontrolled chromium emissions or;
   2. the chromium emissions from the emissions collection system serving the plating tank have been reduced to less than 0.15 milligrams (mg) of chromium per ampere-hour of electrical charge applied to the plating tank.
3. No person shall operate a hard chrome plating tank or chromic acid anodizing tank at a facility if facilitywide chromium emissions from hard chrome plating or chromic acid anodizing are greater than 2 pounds per year but less than 10 pounds per year, unless:
   1. the chromium emissions from the emissions collection systems serving the plating tanks have been reduced by at least 99 percent of the uncontrolled chromium emissions from the hard chrome plating or chromic acid anodizing facility, or;
   2. the chromium emissions from the emissions collection systems are reduced to less than 0.03 mg of chromium per ampere-hour of electrical charge applied to the tanks.
4. No person shall operate a hard chrome plating or chromic acid anodizing tank at a facility if facilitywide chromium emissions from hard chrome plating or chromic acid anodizing are 10 pounds per year or greater, unless:
   1. the chromium emissions from the emissions collection systems serving the plating tanks have been reduced by at least 99.8 percent of the uncontrolled chromium emissions from the hard chrome plating or chromic acid anodizing facility, or; the chromium emissions from the emissions collection systems are reduced to less than 0.006 mg of chromium per ampere-hour electrical charge applied to the tanks.