Model Standard Storm Water Mitigation Plan & Hydromodification Plan (San Diego Region)
The Orange County Stormwater Program in south Orange County updated its Model Stormwater Mitigation Plan (SSMP) and developed a Hydromodification Management Plan (HMP) in response to permit requirements from the San Diego Regional Water Quality Control Board (Order R9-2009-0002). The permit requires the incorporation of low impact development and hydromodification requirements in new development and significant redevelopment projects.
The following documents were submitted to the San Diego Regional Water Quality Control Board on December 16, 2011 for approval:
* Please note that the Technical Guidance Document is a complementary document to the Model WQMP; however, it was not a specific requirement of Order R9-2009-0002. The Technical Guidance Document contains supporting guidance on undertaking the technical analyses necessary to prepare a Project WQMP.
These documents will also be made available for public review and comment by the San Diego Regional Water Quality Control Board and the Executive Officer will determine the need for a public hearing. Please see the Regional Board’s website for additional details about this review and comment process, or for more information regarding the Orange County Municipal Stormwater Permit (for south Orange County): http://www.swrcb.ca.gov/rwqcb9/water_issues/programs/stormwater/oc_stormwater.shtml
If you have questions or comments on these proposed documents that you wish to submit to OC Watersheds, please email them to Jennifer Shook. For more information on New Development/Significant Development in Orange County, or for more information regarding the current interim Hydromodification Criteria in Orange County, please visit: http://www.ocwatersheds.com/WQMP.aspx
Watershed Workplans (San Diego Region)
On December 8, 2011 the County of Orange, the Orange County Flood Control District and the Cities of Aliso Viejo, Dana Point, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Mission Viejo, Rancho Santa Margarita, San Clemente and San Juan Capistrano hosted a Watershed Workplan Public Review Meeting. The purpose of this meeting was to provide the public in south Orange County an opportunity to learn about the water quality monitoring efforts and Best Management Practice (BMP) implementation that are taking place in their watershed.
The following meeting materials have been posted for your information:
The Watershed Workplans describe the Watershed Permittees' development and implementation of a collective watershed strategy to assess and prioritize the water quality challenges within the watershed's receiving waters, identify and model constituents of concern, develop a watershed-wide BMP implementation strategy to address highest priority water quality challenges, and a monitoring strategy to evaluate BMP effectiveness and changing water quality prioritization in the watershed.
The 2012 Workplans are posted below for the watersheds in the San Diego Region and describe the approach taken by the associated Watershed Permittees to maintain a responsive program in compliance with Directive G of the San Diego Regional Water Quality Control Board's Order (Regional Board Order No. R9-2009-0002). Please submit comments on the 2012 Workplans by close of business on December 16, 2011 to Jennifer Shook
The 2011 Workplans are posted below for the watersheds in the San Diego Region for your reference.
