The complete official site files can be reviewed at:

EPA Region IX
Records Center
Mail Stop SFD-7C
95 Hawthorne Street
Room 403
San Francisco, CA 94105
P: 415-536-2000

Local repository:

Burton Barr Central Branch (Reference Section) 
1221 N. Central Avenue in Phoenix
P: 602-262-4636 

or

Interested parties can review site information in person at the ADEQ Record Center | Learn More >