SYNOPSIS OF CASE: THIS IS THE SECOND CIVIL REFERRAL AGAINST ALBUQUERQUE MATERIALS FOR VIOLATIONS OF NSPS SUBPART 000. THE FIRST REFERRAL CONCERNED FAILURE TO NOTIFY THE ADMINISTR -ATOR AND CONDUCT PERFORMACE TESTS AT A PORTABLE ROCK CRUSH- ER LOCATED. ON TRIBAL LAND AT SANTA ANA PUEBLO. THE PRESENT REFERRAL CONCERNS SIMILAR VIOLATIONS AT THE GREVEY PLANT, ON PRIVATESIDIARY, SPRINGER BUILDING MATERIALS, OWN AND OPERATE SEVERAL MINING, CRUSHING, AND SCREENING PLANTS IN THE ALBU -QUERQUE AREA.