Hexavalent Chromium ATCM for Decorative and Hard Chrome

Effective Date: October 24, 2007(6) Foam thickness. The owner or operator shall record the foamthickness hourly for 15 operating days, and daily thereafter aslong as there is no violation of the foam thickness requirement.If a violation occurs, the measurement frequency shall returnto hourly for 15 operating days, and daily thereafter.(d)(e)(f)Breakdown records. The owner or operator shall maintain recordsof the occurrence, duration, and cause (if known) and action takenon each breakdown.Records of excesses. The owner or operator shall maintainrecords of exceedances of the emission limitations in section93102.4, the monitoring parameter values established undersection 93102.9, or any site-specific operating parametersestablished for alternative equipment. The records shall include thedate of the occurrence, the duration, cause (if known), and, wherepossible, the magnitude of any excess emissions.Records demonstrating facility size. Facility size for determiningthe applicable emission limitation in subsection 93102.4(a) isdetermined by the maximum cumulative potential rectifier capacity.However, a facility with a maximum cumulative potential rectifiercapacity of 60 million amp-hr/yr or more may, at the option of theowner or operator, be considered small or medium if the actualcumulative rectifier usage is less than 60 million amp-hr/yr asdemonstrated by using either of the following procedures:(1) Annual actual cumulative rectifier capacity. Show by recordsthat the facility's previous annual actual cumulative rectifiercapacity was less than 60 million amp-hr/yr, by usingnonresettable ampere-hour meters and keeping monthlyrecords of actual ampere-hour capacity for each 12-monthrolling period following the compliance date. The actualcumulative rectifier capacity for the previous 12-month rollingperiod shall be tabulated monthly by adding the capacity forthe current month to the capacities for the previous 11 months;or(2) Maximum cumulative potential rectifier usage limit. Byaccepting a limit on the maximum cumulative potential rectifierusage of a hard chromium electroplating facility through atitle V permit condition or a permitting agency operating permitcondition and by maintaining monthly records in accordancewith subsection 93102.12(c)(1) to demonstrate that the limithas not been exceeded.35