Approval and Promulgation of Implementation Plans; Indiana
other · Rule · Published 2003-05-05 · Effective 2003-07-07 · IN · 68 FR 23604
Document
Document number
03-10997
Federal Register citation
68 FR 23604
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
other
Publication date
2003-05-05
Effective date
2003-07-07
State
IN
EPA docket
IN152-1a
Abstract
The EPA is approving revisions to volatile organic compound (VOC) regulations in 326 Indiana Administrative Code (IAC) 8-1-2. Indiana submitted a request for this State Implementation Plan (SIP) revision on October 21, 2002, and provided additional material to EPA on January 10, 2003. This revision affects miscellaneous metal coating operations performing dip or flow coating. One change would enable dip and flow coating operators to use a rolling 30-day average to meet VOC content limits, instead of the current daily compliance requirement. EPA has determined that the extended averaging period is more practical for these sources because of the difficulties associated with intermittently adding solvent and the higher transfer efficiency associated with dip and flow coating operations. Solvent is intermittently added to the coating tank to maintain proper viscosity. Dip and flow coating generally has a higher transfer efficiency, which results in lower emissions, than spray coating. Indiana also added new equivalent emission limits for dip and flow coating, and made some additional, minor revisions. For the reasons discussed below, EPA is approving this submission.