(1) For the purposes of this section "marine finfish rearing facilities" means those private and public facilities located within the salt water of the state where finfish are fed, nurtured, held, maintained, or reared to reach the size of release or for market sale.

(2) Not later than October 31, 1994, the department shall adopt criteria under chapter 34.05 RCW for allowable sediment impacts from organic enrichment due to marine finfish rearing facilities.

(3) Not later than June 30, 1995, the department shall adopt standards under chapter 34.05 RCW for waste discharges from marine finfish rearing facilities. In establishing these standards, the department shall review and incorporate, to the extent possible, studies conducted by state and federal agencies on waste discharges from marine finfish rearing facilities, and any reports and other materials prepared by technical committees on waste discharges from marine finfish rearing facilities. The department shall approve or deny discharge permit applications for marine finfish rearing facilities within one hundred eighty days from the date of application, unless a longer time is required to satisfy public participation requirements in the permit process in accordance with applicable rules, or compliance with the requirements of the state environmental policy act under chapter 43.21C RCW. The department shall notify applicants as soon as it determines that a proposed discharge meets or fails to comply with the standards adopted pursuant to this section, or if a time period longer than one hundred eighty days is necessary to satisfy public participation requirements of the state environmental policy act.

(4) The department may adopt rules to exempt marine finfish rearing facilities not requiring national pollutant discharge elimination system permits under the federal water pollution control act from the discharge permit requirement.