# Approval and Promulgation of Implementation Plans; Indiana
> **Rule** · Direct final rule. · Published 2003-05-05 · Effective 2003-07-07 · 68 FR 23604
## Document
- **Document number:** 03-10997
- **Category:** other
- **Federal Register citation:** 68 FR 23604
- **CFR reference:** 40 CFR 52
- **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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/05/05/03-10997/approval-and-promulgation-of-implementation-plans-indiana)
---
*AI Analytics · CC0 1.0*