This is an Administrative Order (AO) for compliance pursuant to CWA 309(a) issued to Sewerage Agency of Southern Marin, Almonte Sanitary District, Alto Sanitary District, City of Mill Valley, Homestead Valley Sanitary District, Richardson Bay Sanitary District, and Tamalpais Community Services District. The violations involve unpermitted discharges from wastewater collection systems operated by SASM, Almonte, Alto, Mill Valley, HVSD, RBSD, and Tamalpais CSD. The Order directs SASM, Almonte, Alto, Mill Valley, HVSD, RBSD, and Tamalpais CSD to take steps to eliminate sewage spills (SSOs). The unilateral administrative order was originally issued on April 10, 2008 but was amended on September 2, 2008. This AO was terminated on 11/25/2024.