BISON NITROGEN PRODUCTS IS LOCATED AT HGWY 15 WEST OF WOOD- WARD, OK. BISON NITROGEN FACILITY CONDUCTS ITS BUSINESS AS A MANUFACTURE OF LIQUID FERTILIZER. ON AUG 18, 1980, BISON NOTIFIED EPA IT WAS USING ZINC CHROMATE AS A RUST INHIBITOR IN THE WATER USED TO COOL THE PLANT. THE COOLING WATER BLOWDOWN IS STORED IN TWO PONDS LOCATED ON THE PRO- PERTY. ON JULY 20, 1984, AN INSPECTION WAS PERFORMED AT THE FACILITY BY OSDH. THE FOLLOWING VIOLATIONS WERE CITED: FAILURE OF GROUNDWATER EVALUATION PLAN, FAILURE TO TEST SAMPLING, AND NO CLOSURE PLAN. * A COMPLIANCE ORDER AND NOTICE OPPORTUNITY FOR HEARING WAS ISSUED ON JULY 20, 1984, A PROPOSED PENALTY WAS ASSESSED $29,500. A CONSENT AGREEMENT AND FINAL ORDER WAS MAILED ON MAY 29, 1985. A PENALY OF $1,500 COLLECTED ON 5/29/85.