“…Specific investigations that have included assessment of seawater intrusion and general quality of the ground water for counties and other large areas have been carried out since the early 1970's (Walters, 1971;Drost, 1982Drost, , 1985Whiteman and others, 1983;Dion and Sumioka, 1984;Jones, 1985;others, 1988, 1994;Woodward and others, in press). Additionally, an assessment of the ground-water quality for the Puget Sound region (Turney, 1986) was completed as part of a statewide assessment.…”