Reporting a release:
A suspected or confirmed release must be reported within 24 hours.

UST Indiana Laws and Rules applicable under Indiana Administrative Code (IAC) 329

Regulations Pertaining to Underground Storage tanks (Current as of April14, 2014) are as indicated in the links below

40 Code of Federal Regulation (CFR) Part 280:

40 CFR Part 281:

40 CFR Part 282:

40 CFR Part 302: