THE COAST GUARD INFORMED US OF AN OIL SPILL IN LAKE MICHIGAN FROM THE J.I. CASE FACILITY ON 6/22/90. WE ISSUED A SECTION 308 INFORMATION REQUEST TO FIND OUT WHAT HAPPENED. WE FOUND OUT THAT 50 GALS OF OIL CAME OUT OF AN OUTFALL AND 2-3 GALS OF TRANSMISSION FLUID LEAKED FROM A TRACTOR AND RAN OFF INTO THE LAKE. WE BEGAN LOOKING AT PAST VIOLATIONS MORE CLOSELY WE HAD TO ASK COAST GUARD TO DROP THEIR ADMINISTRATIVE CASE AGAINST J.I. CASE SINCE WE WANTED TO PURSUE ALL THE VIOLA- TIONS AT ONCE. WE ARE ISSUING A COMPLAINT FOR THE 6/22/90, OIL SPILL AND FOR FAILURE TO PROVIDE QUALITY DATA ON CERTAIN POLLUTANTS IN THE DMR, ALONG WITH GENERAL PH VIOLATIONS AND TOTAL SUSPENDED SOLID VIOLATION.