6/2/10 - ADMINISTRATIVE ORDER ON CONSENT, RCRA 7003, ISSUED. THIS ORDER PROVIDES FOR THE MANAGEMENT OF PCS'S 3 PHOSPHOGYPSUM STACK SYSTEMS (PGSSs) TO MITIGATE THE LONG-TERM RISK TO HUMAN HEALTH AND THE ENVIRONMENT IN THE ENVENT OF THE FORMATION AND/OR COLLAPSE OF ADDITIONAL SINKHOLES, INCLUDING ADDITIONAL WORK THAT MAY BE REQUIRED BY SECTION XIII OF THIS ORDER.