5/21/87 - NOV ISSUED 11/20/86 FOR VIOLATION OF INDIANA AIR POLLUTION CONTROL BOARD REGULATION 325 IAC 6-4-2(C), WHICH ESTABLISHES MAXIMUM ALLOWABLE PARTICULATE CONCENTRATION IN- CREASES. * * DATE OF PRE-REFERRAL PACKAGE TO HQ/DOJ: 2/8/88 * * NAVISTAR HAS VIOLATED THE INDIANA SIP, INDIANA AIR POLLU- TION CONTROL BOARD RULE 325 IAC 6-4-2(C), BY ALLOWING AN IN- CREASE IN CONCENTRATION OF FUGITIVE DUST OF 362 AND 145 MICROGRAM PER CUBIC METER ON MARCH 22, 1985, AND APRIL 29, 1987, RESPECTIVELY. THE RULE ALLOWS AN INCREASE OF 50 MICRO GRAM PER CUBIC METER. USEPA ISSUED A NOV TO NAVISTAR ON NO- VEMBER 20, 1986. THE COMPANY HAS BEEN NEGOTIATING WITH THE STATE OF INDIANA TO ATTEMPT TO RESOLVE THE VIOLATIONS, AND HAS COMPLETED MANY TASKS DESIGNED TO REDUCE THE LEVEL OF FU- GITIVE DUST. USEPA IS ATTEMPTING TO NEGOTIATE WITH NAVISTAR TO RESOLVE THE NOV PRIOR TO AND IN LIEU OF REFERRING THE CASE. HQ AND DOJ APPROVED A PROPOSED BOTTOMLINE SETTLEMENT FIGURE BY MEMO DATED MARCH 4, 1988. 09/27/88: 09/23 - SENT COMMENTS ON NAVISTAR'S PROPOSAL TO COUNSEL ON 8/31/88 AND 09/8/88.