Okla. Stat. tit. 27A, § 27A-2-10-304

A. Requests for variances from specific requirements of any

particular rule must be made a part of the permit application of any

applicant and the opportunity to request a public meeting or

administrative permit hearing, or both, shall have been offered

prior to authorization of the variance to any applicant, including

any unit of government. Further, any application for a variance for

substitute technology which equals or exceeds the protection

accorded by the particular rule shall not be granted unless an

opportunity to request a public meeting or administrative permit

hearing, or both, has been offered.

B. Except as otherwise provided in this subsection, the

Department shall not approve a variance from the rules of the Board

for a solid waste disposal site to be located within any one-hundred

year flood plain unless the variance is conditioned upon the

subsequent redefinition of the one-hundred year plain to not include

the land area proposed for the variance. A variance may be granted

for the siting of a solid waste transfer station within a one-

hundred year flood plain conditioned upon the requirement that no

solid waste will be retained or stored by any means during

nonoperating hours on any portion of the permitted site that is

within the one-hundred year flood plain.