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TNRCC Outdated 30 and 31 TAC 117

Outdated 30 TAC 117 and 31 TAC 117 rules, 31 TAC 117 date from 1972 and the rule changed to 30 TAC 117 in September 1993

Listed by Effective Date

The TNRCC is providing the outdated 30 TAC 117 and 31 TAC 117 (Control of Air Pollution from Nitrogen Compounds). The official rules (31 TAC 117) date from 1972 and the rule changed to 30 TAC 117 in September 1993. Below is each rule change that states what changed in each version of the rule. A history showing all 30 TAC 117 and 31 TAC 117 changes is available. The agency has tried to make a complete version of each old rule available, but in some cases the old rule was not available.
March 5, 1972 August 31, 1972 May 26, 1976 Rule Change
June 9, 1993
Rule Change
June 23, 1994
Rule Change
September 22, 1994
Rule Change
January 2, 1995
Rule Change
February 1, 1996
Rule Change
August 16, 1996
Rule Change
May 22, 1997
Rule Change
December 23, 1997
Rule Change
June 10, 1998
Rule Change
March 21, 1999
Rule Change
November 21, 1999

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