MONTEREY BAY UNIFIED AIR POLLUTION CONTROL DISTRICT
 


RULE 1005
CHROME PLATING AND CHROMIC ACID ANODIZING

(Adopted May 17, 1989)
 
CONTENTS
PART 1.0. GENERAL

1.1. Purpose
1.2. Applicability

PART 2.0. DEFINITIONS

2.1. Ampere-hours
2.2. Anti-mist Additives
2.3. Chrome
2.4. Chrome Plating
2.5. Chromic Acid
2.6. Chromic Acid Anodizing
2.7. Chromium
2.8. Control Equipment
2.9. Decorative Chrome Plating
2.10. Emission Factor
2.11. Emissions Collection System
2.12. Existing Facility
2.13. Facility
2.14. Facilitywide Emissions From Hard Chrome Plating Or Chromic Acid Anodizing
2.15. Hard Chrome Plating
2.16. New Facility
2.17. Plating Tank
2.18. Uncontrolled Chromium Emissions From The Hard Chrome Plating Or Chromic Acid Anodizing Facility

PART 3.0. REQUIREMENTS

3.1. Decorative Chrome Plating Facilities
3.2. Hard Chrome Plating and Chromic Acid Anodizing Facilities
 

PART 4.0. COMPLIANCE SCHEDULE

4.1. Existing Decorative Chrome Plating Facilities
4.2. Existing Hard Chrome Plating And Chromic Acid Anodizing Facilities
4.3. New Chrome Plating And Chromic Acid Anodizing Facilities



PART 1.0 GENERAL

1.1. Purpose.

To comply with Section 39666 of the Health & Safety Code and Section 93102, Subchapter 7.5, Chapter 1, Part III, Titles 17 and 26, of the California Administrative Code, through the installation of controls on chrome plating and chromic acid anodizing operations.

1.2. Applicability.

1.2.1. This rule shall apply to any new, modified, or existing chrome plating or chromic acid anodizing facility.

PART 2.0. DEFINITIONS

2.1. Ampere-hours.

means the integral of electrical current applied to a plating tank (amperes) over a period of time (hours).

2.2. Anti-mist Additive.

means a chemical which reduces the emission rate from the tank when added to and maintained in the plating tank.

2.3. Chrome.

means metallic chrome.

2.4. Chrome Plating.

means either hard or decorative chrome plating.

2.5. Chromic Acid.

means an aqueous solution of chromium trioxide (CrO3), or a commercial solution containing chromic acid, dichromic acid (H2Cr207), or trichromic acid (H2Cr3O10).

2.6. Chromic Acid Anodizing.

means the electrolytic process by which a metal surface is converted to an oxide surface coating in a solution containing chromic acid.

2.7. Chromium.

means hexavalent chromium.

2.8. Control Equipment.

means any device which reduces emissions from the emissions collection system.

2.9. Decorative Chrome Plating.

means the process by which chromium is electrodeposited from a solution containing compounds of chromium onto an object resulting in a chrome layer 1 micron (0.04 mil.) thick or less.

2.10. Emission Factor.

means the mass of chromium emitted during a test conducted in the emissions collection system in accordance with ARB Test Method 425, divided by the ampere-hours consumed by the tanks in the tested emissions collection system, expressed as the mass of chromium emitted per ampere-hour of electrical current consumed.

2.11. Emissions Collection System.

means a device or apparatus used to gather chromium emissions from the surface of a chrome plating or chromic acid anodizing tank or tanks.

2.12. Existing Facility.

means any facility operating or under construction as of May 17, 1989.

2.13. Facility.

means a business or businesses engaged in chrome plating or chromic acid anodizing which are owned or operated by the same person or persons, are located on the same parcel or on contiguous parcels.

2.14. Facilitywide Emissions From Hard Chrome Plating Or Chromic Acid Anodizing.

means the total emissions from all hard chrome plating or chromic acid anodizing at the facility over a calendar year. Emissions shall be calculated as the sum of emissions from the emissions collection systems at the facility. The emissions from an emissions collection system shall be calculated by multiplying the emission factor for that emissions collection system by the sum of ampere-hours consumed during that year for all of the tanks served by the emissions collection system.

2.15. Hard Chrome Plating.

means the process by which chromium is electrodeposited from a solution containing compounds of chromium onto an object resulting in a chrome layer thicker than 1 micron (0.04 mil).

2.16. New Facility.

means any facility not operating or under construction as of May 17, 1989.

2.17. Plating Tank.

means any container used to hold chromium or chromic acid solution for the purposes of chrome plating or chromic acid anodizing.

2.18. Uncontrolled Chromium Emissions From The Hard Chrome Plating Or Chromic Acid Anodizing Facility.

means the chromium emissions from the emissions collection systems at the facility calculated as if no control equipment is in use. For the purpose of determining compliance with this rule, the uncontrolled chromium emissions shall be calculated using an emission factor based on tests conducted in accordance with ARB Test Method 425, or 14 mg/ampere-hour, whichever is less.

PART 3.0. REQUIREMENTS

3.1. Decorative Chrome Plating Facilities.

3.1.1. No person shall operate a decorative chrome plating tank unless an anti-mist additive is continuously maintained in the plating tank, or control equipment is installed and used, in a manner which has been demonstrated to and approved by the Air Pollution Control Officer (APCO) as reducing chromium emissions by 95 percent or more relative to chromium emissions when an anti-mist additive is not maintained, or control equipment is not installed and used.

3.2. Hard Chrome Plating and Chromic Acid Anodizing Facilities.

3.2.1. 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 for each collection system used in the hard chrome plating or chromic acid anodizing operations and shall submit the information to the APCO by November 17, 1989 and upon request thereafter.

3.2.2. No person shall operate a plating tank for hard chrome plating or chromic acid anodizing unless the tank has an emissions collection system.

3.2.3. No person shall operate a hard chrome plating or chromic acid anodizing tank unless:

3.2.3.1. 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
3.2.3.2. 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.

3.2.4. 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:

3.2.4.1. 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
3.2.4.2. 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.

3.2.5. 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:

3.2.5.1. 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
3.2.5.2. the chromium emissions from the emissions collection systems are reduced to less than 0.006 mg of chromium per ampere-hour of electrical charge applied to the tanks.

PART 4.0 COMPLIANCE SCHEDULE

4.1. Decorative Chrome Plating Facilities.

4.1.1. The owners or operators of existing decorative chrome plating tanks must comply with the provisions of Section 3.1 by November 17, 1989.

4.2. Hard Chrome Plating And Chromic Acid Anodizing Facilities.

4.2.1. The owner or operator of an existing hard chrome plating or chromic acid anodizing facility subject to Subsection 3.2.3. or 3.2.5 shall submit to the APCO an application for an Authority to Construct the equipment necessary to meet the requirements of Subsections 3.2.2 and 3.2.3 by May 17, 1990. The facility shall be in compliance with the requirements of Subsections 3.2.2. and 3.2.3. by November 17, 1990.

4.2.2. The owner or operator of an existing hard chrome plating or chromic acid anodizing facility subject to Subsection 3.2.4. shall submit to the APCO an application for an Authority to Construct the equipment necessary to meet the requirements of Subsections 3.2.2. and 3.2.4. by November 17, 1990. The facility shall be in compliance with Subsections 3.2.2. and 3.2.4. by May 17, 1991.

4.2.3. The owner or operator of an existing hard chrome plating or chromic acid anodizing facility subject to Subsection 3.2.5. shall submit to the APCO an application for an Authority to Construct the equipment necessary to meet the requirements of Subsection 3.2.5. by November 17, 1991. The facility shall be in compliance with the requirements of Subsection 3.2.5. by May 17, 1993.

4.3. New Chrome Plating And Chromic Acid Anodizing Facilities.

4.3.1. The owner or operator of a new chrome plating or chromic acid anodizing facility subject to any subsection(s) of Part 3.0 shall be in compliance with the requirements of the applicable subsections at the time of start-up of operations.

 
 

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