THIS IS AN ADMINISTRATIVE ORDER ON CONSENT TO CLEAN UP THE TWINS INN SITE LOCATED AT 56TH AND SHERIDAN BLVD. IN UNINCORPORATED JEFFERSON COUNTY. SITE CONSISTS OF A CHLORINATED SOLVENT GROUNDWATER PLUME AND THE PLUME'S SOIL SOURCES. POTENTIAL RISKS AT THE SITE ARE THOSE ASSOCIATED WITH A GROUNDWATER PLUME LOCATED IN A MIXED USE AREA. CURRENT CONCERNS INCLUDE IMPACTS TO WATER USED BY TWO RESIDENCES AND THE TWINS INN TAVERN AND POSSIBLE MIGRATION OF HAZARDOUS SUBSTANCES TO THE WETLAND HABITAT SUPPORTED BY THE CONFLUENCE OF RALSTON CREEK AND CLEAR CREEK.