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  • 1. Managing TMDLs, the MS4 Permit and Watersheds in the City of Los Angeles “stormwater runoff as a resource” Shahram Kharaghani, PhD, PE, BCEE City of Los Angeles Stormwater Program Manager September 26, 2013
  • 2. Outline Municipal Stormwater Permit • Watershed Planning • From Planning to Compliance • Coordination• Conclusions •
  • 3. City of Los AngelesCity of Los Angeles supportive of Regionalsupportive of Regional Board’s vision of aBoard’s vision of a comprehensive approachcomprehensive approach to urban runoff waterto urban runoff water qualityquality Municipal Stormwater Permit Compliance Planning & Monitoring Enhanced Watershed Management Plan Coordinated Integrated Monitoring Program Water QualityWater Quality
  • 4. Municipal Stormwater Permit 4th Generation Permit Challenges / Opportunities – Minimum Control Measures – Monitoring Requirements • Receiving Water • Outfalls – Watershed-wide Collaboration • Watershed Management Plans • Enhanced Watershed Management Plans – Numeric Limits • Receiving Water Limitations • Water Quality Based Effluent Limitations – Reasonable Assurance Analysis – Time constraints plan development and implementation
  • 5. 22 TMDLs impact City of LA out of the 32 in permit Los Angeles River WatershedLos Angeles River Watershed • LA River TrashLA River Trash • LA River NitrogenLA River Nitrogen • LA Harbor BacteriaLA Harbor Bacteria • LA River MetalsLA River Metals • LA River BacteriaLA River Bacteria • Echo Park Lake ToxicsEcho Park Lake Toxics • Lincoln Park Lake Trash,Lincoln Park Lake Trash, NutrientsNutrients Santa Monica WatershedSanta Monica Watershed • Santa Monica Bay BeachesSanta Monica Bay Beaches Bacteria (Dry Weather, WetBacteria (Dry Weather, Wet Weather)Weather) • Marina Del Rey BacteriaMarina Del Rey Bacteria • Marina Del Rey ToxicsMarina Del Rey Toxics • Santa Monica Bay Nearshore &Santa Monica Bay Nearshore & Offshore DebrisOffshore Debris • Santa Monica Bay ToxicsSanta Monica Bay Toxics Ballona Creek WatershedBallona Creek Watershed • Ballona Creek TrashBallona Creek Trash • Ballona Creek MetalsBallona Creek Metals • Ballona Creek ToxicsBallona Creek Toxics • Ballona Creek BacteriaBallona Creek Bacteria • Ballona Creek WetlandsBallona Creek Wetlands Dominguez Channel WatershedDominguez Channel Watershed • Machado Lake TrashMachado Lake Trash • Machado Lake NutrientMachado Lake Nutrient • Machado Lake ToxicsMachado Lake Toxics • Dominguez Channel/ LADominguez Channel/ LA Harbor Metals and ToxicsHarbor Metals and Toxics Municipal Stormwater Permit Compliance Planning & Monitoring
  • 6. Municipal Stormwater Permit Compliance Planning & Monitoring City of Los Angeles leadsCity of Los Angeles leads four Enhanced Watershedfour Enhanced Watershed Management Plans withManagement Plans with about 30 partner agenciesabout 30 partner agencies
  • 7. 5yr5yr 1010 1515 2020 2525 aa bb cc #1#1 #2#2 #3#3 #4#4 #5#5 MCMs, Ordinances, Distributed & Regional BMPS Municipal Stormwater Permit Compliance Planning & Monitoring Coordinated Integrated Monitoring Program TMDL ComplianceTMDL Compliance MilestonesMilestones Enhanced Watershed Management Plan IterationsEnhanced Watershed Management Plan Iterations Permit CyclePermit Cycle
  • 8. City of Los Angeles Integrated Resources Plan Watershed Planning - Water Sources of untapped water… • Stormwater :Stormwater : 100 MG/day (dry-weather);100 MG/day (dry-weather); > 3 BG/day (wet-weather)> 3 BG/day (wet-weather) • Wastewater:Wastewater: 300 MG/day goes to the ocean300 MG/day goes to the ocean • Groundwater:Groundwater: BG of water (contaminated)BG of water (contaminated) Watershed Planning - Water ““provides a universal view”provides a universal view”
  • 9. City of Los Angeles Water Quality Compliance Master Plan for Urban Runoff Watershed Planning - Stormwater Watershed Planning - Stormwater Mission Reduce pollution from urban runoff to meet Clean Water Act MandatesReduce pollution from urban runoff to meet Clean Water Act Mandates • Source control & institutional measures • Storm water capture, treatment, & reuse • Infiltration & groundwater recharge • Multi-use benefits • Community & stakeholder value • Drought tolerant landscaping • Pervious pavements & green roofs • Outreach / partnerships
  • 10. From Planning to Compliance Watershed Planning (IRP, WQCMPUR) – Institutional Measures • Public Outreach – Municipal Ordinances • Green Building Ordinance • Landscape Ordinance • Low Impact Development (LID) Ordinance – Local (on-site) Measures • Rain Barrels • Rain Gardens – Regional Measures • Public Projects • Green Street Standards Manuals for Public/Private • Green Street Standard Plans MS4 Permit Implementation o Minimum Control Measures o LID / Green Street Policy o Distributed BMPs (Green-Blue Infrastructure) o Regional BMPs to retain and infiltrate 85th percentile storm
  • 11. Coordination With Stakeholders o City departments and officials o Environmental organizations o Neighborhood councils o RWQCB, SWRCB, US EPA o Municipalities o County, state agencies o Others Coordinate MS4 Permit negotiations & TMDL development Development of EWMPs and CIMPs Implementation of EWMPs Implementation of CIMPs Evaluation of Progress to Compliance
  • 12. • Great opportunity to meet water quality while augmenting water supply sources • Leveraging resources • Cost effective • Plans may enable the region to secure a more sustainable source funding Conclusions
  • 13. Shahram Kharaghani, PhD, PE, BCEEShahram Kharaghani, PhD, PE, BCEE City of Los Angeles Stormwater ManagerCity of Los Angeles Stormwater Manager September 26, 2013September 26, 2013Additional Information: www.lacity.org or www.lastormwater.org www.facebook.com/lastormwaterprogramwww.facebook.com/lastormwaterprogram www.youtube.com/user/lastormwaterprogramwww.youtube.com/user/lastormwaterprogram www.lastormwater.org/blog/www.lastormwater.org/blog/