On October 7, 1993, EPA granted the request by the State for the full three years allowed by section 172(b) of the CAA, as amended in 1990, for submittal of the SIP for the East Helena area to attain and maintain the sulfur dioxide secondary NAAQS. Therefore, the SIP for the area was due November 15, 1993. The SIP was not submitted by that date.

[61 FR 16062, Apr. 11, 1996]