Upon request by a municipality or by a user of the facilities the department of ecology may in relation to chapter 54, Laws of 1972 ex. sess. and this chapter issue its certificate stating that the facilities (1) as designed are in furtherance of the purpose of abating, controlling or preventing pollution, and/or (2) as designed or as operated meet state and local requirements for the control of pollution. This section shall not be construed as modifying the provisions of RCW 82.34.030; chapter 70A.15 RCW; or chapter 90.48 RCW.