AO ISSUED 6/14/2005. THE SYSTEM DID NOT MONITOR FOR SOME OF THE LIST 1 UCMR CONTAMINANTS DURING EACH OF THE FOUR (4) CALENDAR QUARTERS OF 2001 (SPECIFICALLY, THE SYSTEM MONITORED IN FEBRUARY AND MARCH; APRIL; JULY; AND OCTOBER 2001). THE SYSTEM, HOWEVER, FAILED TO MONITOR FOR ALL OF THE LIST 1 UCMR CONTAMINANTS. THE SYSTEM REPORTED THAT IT MONITORED FOR ALL OF THE LIST 1 UCMR CONTAMINANTS IN JANUARY 2005 AND IN APRIL 2005.