THIS AO PURSUANT TO THE SDWA IS ISSUED TO NAVAL AIR STATION (NAS) FALLON. THE VIOLATION INVOLVES NAS FALLON'S CONTIN- UING VIOLATION OF THE MAXIMUM CONTAMINANT LEVEL FOR ARSENIC OF 50 PPB IN DRINKING WATER SERVED BY THE WATER SYSTEM OWNED AND OPERATED BY NAS FALLON. THE ORDER DIRECTS THE STATION ADHERE TO A SCHEDULE FOR TESTING, SELECTING, DESIGN- ING, AND CONSTRUCTING TREATMENT TECHNOLOGY TO REMOVE ARSENIC FROM ITS DRINKING WATER AND FOR COMPLYING WITH THE ARSENIC MCL, AND TO CONTINUE TO PROVIDE ALTERNATIVE WATER FOR DRINKING AND COOKING THAT MEETS THE ARSENIC MCL UNTIL THE NAS FALLON PUBLIC WATER SYSTEM IS IN COMPLIANCE WITH THE 50 PPB STANDARD.