RCW 90.48.530: Construction projects involving fill material—Leaching test.

(1) In order to ensure that construction projects involving the use of fill material do not pose a threat to water quality, the department may require that the suitability of potential fill material be evaluated using a leaching test included in the soil clean-up rules adopted by the department under chapter 70A.305 RCW in any water quality certification issued under section 401 of the federal clean water act and in any administrative order issued under this chapter, where such certification or administrative order authorizes the placement of fill material, some or all of which will be placed in waters of the state. Any such requirement imposed by the department in a water quality certification or administrative order issued prior to May 9, 2003, is ratified and approved by the legislature as a valid and reliable method for determining concentrations of chemical constituents that can be present in fill material without posing an unacceptable risk of violating water quality standards, and shall be in effect as imposed by the department for all work not completed by June 1, 2003.

(2) Nothing in this section limits, in any way, the department's authority under this chapter.