2. Procedural Background

On May 14, 2001 the Commission issued D.01-05-058 in Investigation (I.) 98-12-012, a quasi-legislative proceeding opened to explore "concerns raised about the legitimacy of charges for water and sewer services imposed on tenants by the owners of multiple unit residential complexes and mobilehome parks." (I.98-12-012, slip. op. at 1.) D.01-05-058 closed that proceeding.

On June 6, 2001, Western Manufactured Housing Communities Association (WMA) filed a petition for modification of D.01-05-058, thereby reopening I.98-12-012. On June 28, WMA filed a supplement to its petition, and on July 30, Golden State Mobilehome Owners League (GSMOL) filed a single response to these pleadings. No other parties to I.98-12-012 have filed.