ON DEC. 3, 1985, PLAINVILLE ELECTRO PLATING CO OPERATED A HAZARDOUS WASTE SURFACE IMPOUNDMENT AT ITS FACILITY WITHOUT A PERMIT OR INTERIM STATUS IN VIOLATION OF RCRA. THE INTER- IM STATUS OF PLAINVILLE TERMINATED BY OPERATION OF LAW ON NOV. 8, 1985, BECAUSE THE CO FAILED TO CERTIFY COMPLIANCE WITH APPLICABLE GROUNDWATER MONITORING AND LIABILITY IN- SURANCE REQUIREMENTS. INTERIM WAS ALSO TERMINATED BECAUSE THE CO WAS OUT OF COMPLIANCE AT THE TIME OF CERTIFICATION WITH APPLICABLE FINANCIAL ASSURANCE REQUIREMENTS. IN ADD- ITION, PLAINVILLE FAILED TO AMEND ITS CLOSURE PLAN AS RE- QUIRED BY APPLICABLE REGULATIONS TO REQUIRE THE IMMEDIATE CLOSURE OF ITS THREE SURFACE IMPOUNDMENTS, ALL OF WHICH LOST INTERIM STATUS ON NOVEMBER 8, 1985.