EPA v. Sewerage Agency of Southern Marin SASM Administrative Order

Case summary

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.

Defendants (7)

• Sewerage Agency of Southern MarinNamed in complaintNamed in settlement
• Tamalpais Community Services DistrictNamed in complaintNamed in settlement
• Richardson Bay Sanitary DistrictNamed in complaintNamed in settlement
• Homestead Valley Sanitary DistrictNamed in complaintNamed in settlement
• City of Mill ValleyNamed in complaintNamed in settlement
• Alto Sanitary DistrictNamed in complaintNamed in settlement
• Almonte Sanitary DistrictNamed in complaintNamed in settlement

Facilities (7)

• ALMONTE SANITARY DISTRICT SANITARY SEWER COLLECTION SYSTEM

  P.O. BOX 698, MILL VALLEY, CA, 94942

  Registry ID: 110037297886

• TAMALPAIS COMMUNITY SERVICE DISTRICT COLLECTION SYSTEM

  305 BELL LANE, MILL VALLEY, CA, 94941

  Registry ID: 110037297877

• HOMESTEAD VALLEY SANITARY DISTRICT SANITARY SEWER COLLECTION SYSTEM

  PO BOX 149, MILL VALLEY, CA, 94942

  Registry ID: 110037297902

• SEWER AGCY SOUTHRN MARIN WWTP MILL VALLEY

  450 SYCAMORE AVENUE, MILL VALLEY, CA, 94941

  Registry ID: 110002418848

• RICHARDSON BAY SANITARY DISTRICT SANITARY SEWER COLLECTION SYSTEM

  500 TIBURON BLVD., TIBURON, CA, 94920

  Registry ID: 110037090064

• MILL VALLEY, CITY OF, SANITARY SEWER COLLECTION SYSTEM

  26 CORTE MADERA AVE., MILL VALLEY, CA, 94941

  Registry ID: 110037090661

• ALTO SANITARY DISTRICT SANITARY SEWER COLLECTION SYSTEM

  PO BOX 163, MILL VALLEY, CA, 94942

  Registry ID: 110037297895

Statutes cited

• CWA 301 — NPDES Discharge without a Permit
• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• SASM Administrative Orderentered 2008-04-10

  Primary law: CWA

Timeline (5 milestones)

• 2008-04-10Final Order Issued
• 2008-04-10Complaint Filed/Proposed Order
• 2008-07-28Enforcement Action Data Entered
• 2024-11-25NPDES Closed
• 2024-11-25Enforcement Action Closed