1. LID Guidance and Training for Southern California
SMC Project Recommended Tasks
September 24, 2013
RCFC&WCD

2. LID Requirements and Implementation in SoCal
Required in all MS4 Permits
Priority emphasis on infiltration/retention
Implementation Manuals required and developed
Many projects approved with LID features
Prop 84 funded numerous LID implementation projects
However, actual performance 0f LID features is not well-verified
Flow reductions
Pollutant reductions
Long-term maintenance, BMP life cycles
Design details not widely evaluated or ground-truthed

3. Original SMC LID Project Scope
Define LID for Southern California
Compile literature review and perform gap analysis
Conduct pre and post manual training
Develop the LID Manual
Monitor to evaluate LID BMP effectiveness
Feedback and update the manual based on monitoring findings
LID Manual was completed and is now part of the CASQA LID Portal—now undergoing significant upgrade with Prop 84 funds
Scope items completed in

4. Monitor to Evaluate LID BMP Effectiveness
Field monitoring data from sites in southern California are needed to evaluate whether existing design and performance guidance are appropriate for development project acceptance by local jurisdictions
Monitoring results will be evaluated and used to revise the guidance manual as appropriate

5. Technical/Monitoring Work
Approved QAPP/MP
Site monitoring so far
Scripps in San Diego
Pilot BMP site—UC Extension Irvine
Draft Monitoring Report November 2009
Additional Monitoring Sites
Riverside County FC&WCD
City of Los Angeles site—Riverdale
Other Potential Monitoring Sites

6. Guidance Manual Revision
Performance Table Evaluation/Revision
Table 15--BMP Performance – Hydrologic Impacts
Table 16. Environmental Benefits of BMPs
Table 17. BMP Performance – Influent/Effluent Water Quality
Table 18. BMP Site Suitability Criteria
Table 19. Maintenance Considerations for LID BMPs
Cost factors

7. Monitoring is Part of Performance/Effectiveness Assessment
Includes Several Component Strategies
Basic field performance evaluation on existing LID structures
Compiling existing LID performance data/databases and providing in map format
Linking LID monitoring results with available data on adjacent receiving streams
Where available, collecting more intensive, process variable data at selected LID facilities to support future modeling (modeling is beyond original scope)

8. Recommendation
Review and revise the LID effectiveness monitoring program to incorporate new information and strategies, and to initiate the feedback and update process for the LID Manual
Review monitoring objectives and revise as needed
Evaluate original Monitoring Goals (2006)
Evaluate original management questions (2006)
Revise the monitoring goals and objectives to suit current project needs
Review MP and incorporate ongoing and new sites
Develop comprehensive evaluation approach
Develop and report recommendations to the SMC for revised LID effectiveness monitoring/ performance assessment and Manual update

9. Proposed SMC Actions Authorize $20K to conduct the re-scoping tasks
Develop workplan and schedule
-target revised scope to be available by next SMC meeting
Develop RFP to conduct the monitoring and effectiveness assessment under SMC direction
Authorize $125K to conduct effectiveness assessment; 18—24 month project
RCFC&WCD site partnership
Work with UCCE, City of LA, Scripps, others
Partner with CASQA to revise/update the LID Manual
Reserve $50K for this effort