San Bernardino County MS4 Permit

Regional MS4 Permit - San Bernardino County

The San Bernardino County MS4 Permit, Order No. R8-2010-0036, NPDES Permit No. CAS618036 is currently in effect. The previous orders, including Order No. R8-2002-0012, have been rescinded except for enforcement purposes for violations that occurred when they were in effect.

There is currently a proposed Tentative Order for a Regional MS4 Permit that will regulate discharges in San Bernardino County when adopted. Please see the Regional MS4 Permit page for more information. This page will be updated following Permit adoption.

The Model Water Quality Management Plan (WQMP) and Technical Guidance Document (TGD) were developed by the Permittees according to section XI.E. of the current Order. These documents govern the development and implementation of post-construction pollution controls for certain new development and significant redevelopment as defined in the Order. The Order, WQMP, and TGD emphasize the use of controls that support Low Impact Development (LID). Both documents are subject to periodic updates and amendments, subject to the approval of the Executive Officer and after public review. Proposed updates and approvals will be provided on this web page.

We can provide other documents upon request. These include:
• Previous permits
• Reports of Waste Discharge
• Annual Reports
• Monitoring Plans
• Water Code section 13383 Orders implementing statewide Trash Provisions
• Designation agreements for entities that lie within the jurisdiction of multiple regional water boards
• Administrative record for the adoption of orders.

For access to these documents, please contact the file review desk at FileReview8@waterboards.ca.gov- Email.

For additional information regarding the San Bernardino County MS4 program, please contact Hero Alexander at (951) 782-4419.