IN NOVEMBER ON 1988 REPRESENTATIVES OF THE IOWA DEPARTMENT OF NATURAL RESOURCES INVESTIGATED SIMPSON AIRCRAFT'S FACIL- ITY AND NOTED THAT WATER COLLECTED AT THE FACILITY DRAIN OUTLET LEADING TO THE DRAINAGE DITCH HAD A MILKY WHITE COLOR WITH A NOTICEABLE SOLVENT ODOR. SAMPLES WERE COLLECTED AND ANALYSIS OF THESE SAMPLES INDICATED THE PRESENCE OF HAZARD- OUS MATERIALS.