Hexavalent Chromium ATCM for Decorative and Hard Chrome

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Effective Date: October 24, 2007Appendix 4 - Notification of Construction ReportsNotification of Construction Reports required by subsection 93102.4(e) shallcontain the following information:1. The owner or operator's name, title, and address;2. The address (i.e., physical location) or proposed address of thefacility if different from the owner's or operator's;3. A notification of intention to construct a new facility and certificationthat all of the criteria specified in subsection 93102.4(d) are met;4. A notification of intention to make any physical or operationalchanges to a facility that may meet or has been determined to meetthe criteria for a modification;5. The expected commencement and completion dates of theconstruction or modification;6. The anticipated date of (initial) startup of the facility;7. The type of process operation to be performed (hard or decorativechromium electroplating, or chromic acid anodizing);8. A description of the air pollution control technique to be used tocontrol emissions, such as preliminary design drawings and designcapacity if an add-on air pollution control device is used; and9. An estimate of emissions from the facility based on engineeringcalculations and vendor information on control device efficiency,expressed in units consistent with the emission limits of this ATCM.Calculations of emission estimates should be in sufficient detail topermit assessment of the validity of the calculations.Note: A facility can fulfill these report content requirements by complying with the permittingagency's new source review rule or policy, provided similar information is obtained.50
Effective Date: October 24, 2007Appendix 5 - Smoke Test for Chrome Tank CoversSMOKE TEST TO VERIFY THE SEAL INTEGRITY OF COVERS DESIGNEDTO REDUCE CHROMIUM EMISSIONS FROM ELECTROPLATING ANDANODIZING TANKS1. Applicability and Principle2. Applicability. This alternative method is applicable to all hard chromiumelectroplating and anodizing operations where a chrome tank cover isused on the tank for reducing chromium emissions.3. Principle. During chromium electroplating or anodizing operations,bubbles of hydrogen and oxygen gas generated during the processrise to the surface of the tank liquid and burst. Upon bursting, tinydroplets of chromic acid (chromium mist) become entrained in the airabove the tank. Because the chrome tank cover completely enclosesthe air above the tank, the chromium mist either falls back into thesolution because of gravity or collects on the inside walls of the chrometank cover and runs back into the solution. A semi-permeablemembrane allows passage of the hydrogen and oxygen out of thechrome tank cover. A lit smoke device is placed inside the chrome tankcover to detect leaks at the membrane, joints, or seals.4. Apparatus5. Smoke device. Adequate to generate 500 to 1000 ft 3 of smoke/20 ft 2 oftank surface area (e.g., Model #1A=15 SECONDS from SuperiorSignal, New York).6. Small container. To hold the smoke device.7. ProcedurePlace the small container on a stable and flat area at center of thechrome tank cover (you can use a board and place it on the bussbars). Place the smoke device inside the container. After lighting thesmoke device, quickly close the access door to avoid smoke fromescaping. Let smoke device completely burn; entire space under thechrome tank cover will now be filled with the smoke. Observe for leaksof smoke from each seal, joint, and membrane of the chrome tankcover. Record these observations including the locations and aqualitative assessment of any leaks of smoke.When all seals, joints, and membranes have been observed, evacuatethe unit to remove the smoke from the chrome tank cover.51
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Hexavalent Chromium ATCM for Decorative and Hard Chrome

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