EXH0279019613

WAC 173-340-747 Deriving soft eoncen- (a) Fixed parameter three-phase partition- trations for ground water protection, ing model. The three-phase partitioning model (1) Purpose. The purposeof this section is to with fixed input parameters may be used to establish soil concentrations that wili not cause establish a soil concentration for any hazardous contamination of ground water at levels that substance. Site-specific data are not requiredfor exceed the ground water cleanup levels estab- use of this model. See subsection (4) of this lished under WAC 173-340-720. Soil concentra- section. tions established under this section are used to (b) Variable parameter three-phase patti- establish either Method B soil cleanup levels (see tioning model. The three-phase partitioning WAC 173-340-740 (3)(bXiii)(A) or Method C soil model with variable input parameters may be used cleanup levels (see WAC 173-340-745(5)(b)(iii) to establish a soil concentration for any hazardous (A)). substance. Site-specific data are required for use For the purposes of this section, "soil concen- of this model. See subsection (5) of this section. tration" means the concentration in the soil that (c) Four-phase partitioning model. The will not cause an exceedance of the ground water four-phase partitioning model may be used to cleanup level established under WAC 173-340- derive soil concentrations for any site where 720. hazardous substances are present in the soil as a (2) General requirements. The soil coneen- nonaqueous phase liquid (NAPL). The depart- tration established under this section for each ment expects that this model will be used at sites hazardoussubstance shall meet…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]