The State of Maine has declared to the satisfaction of EPA that no existing emission limitations have been affected by stack height credits greater than good engineering practice or any other prohibited dispersion techniques as defined in EPA's stack height regulations as revised on July 8, 1985. Such declarations were submitted to EPA on December 17, 1985; May 30, 1986; October 2, 20, and 24, 1986; August 6, 1987; September 8 and 30, 1988.