Santa Clara River Chloride Santa Clara River Chloride Reduction - PowerPoint PPT Presentation

Santa Clara River Chloride Santa Clara River Chloride Reduction Ordinance of 2008 Reduction Ordinance of 2008 “O O verview and Lessons Learned “ verview and Lessons Learned” ” Brian Louie Technical Services Department Los Angeles County Sanitation Districts March 24, 2010

Presentation Overview Presentation Overview Background on Chloride Issues in Santa Clarita � Path to local control of automatic water softeners � Prospective AWS ban (SB1006) Public outreach & rebates Measure “S” (SB475) 1999-2003 2004 - Current 2006 - Current Water quality improvements achieved � Lessons Learned � Questions �

County Sanitation Districts of County Sanitation Districts of Los Angeles County Los Angeles County Santa Clarita Valley Sanitation District L A C S D

Santa Clarita Valley Sanitation District Santa Clarita Valley Sanitation District

Santa Clara River Watershed Santa Clara River Watershed FILLMORE WRP Reach 4A Reach 4B Reach 5 Reach 6 Reach 7 Reach 3 Santa Paula Fillmore Piru Santa Clarita Valley 2002 – Regional Board adopts TMDL standard of 100 mg/l

Required Facilities to Meet Standard Required Facilities to Meet Standard � 20 MGD Microfiltration and Reverse Osmosis at Saugus and Valencia WRPs � 43-mile brine line & 3-mile ocean outfall through Ventura County Total Present Worth Cost: ~$500 Million

Upper Santa Clara River Chloride Upper Santa Clara River Chloride Total Maximum Daily Load Total Maximum Daily Load SWP Cl as high as 95 ppm SWP Cl as high as 140 ppm 100 mg/L

Local Control for AWS Local Control for AWS (SB1006) (SB1006) � 1999 - SB 1006 amended HSC Section 116786 � Residential AWS control of new installations after January 1, 2003 if: – local agency not in compliance – AWS control is only available means of achieving compliance – non-residential saline discharges limited “to the extent technologically and economically feasible” � Agency must characterize sources of chloride in an independent study

Chloride Loading Above Water Supply Based on Time of Day 1.4 SRWS Prohibition is Chloride Loading, pounds per household Invalidated, 1997 1.2 1 0.8 Daytime Nighttime 0.6 0.4 0.2 0 1969 1979 1989 1995 1999/2000 2000/2001

AWS Test Study at Saugus WRP Brine Capture Line 55 Gallon Drum Brine Collection Tank Sample Point No. 3 (SRWS Brine Waste) Brine @ >10,000 ppm Loading >1 ppd for an “efficient” AWS 2002 SCVJSS Chloride Source Report

Automatic Water Softeners Automatic Water Softeners Chloride from running 1 AWS per day is equivalent to: � Washing Hands � Washing Hair 19,000 times per day 5,000 times per day � Running Dishwasher � Cleaning Toilet 800 loads per day 40 times per day

Sources of Chloride in Recycled Water Sources of Chloride in Recycled Water Residential, Commercial, Industrial 20% Water Supply 40% Automatic Water Softeners 30% Disinfection 10% AWS loading at 8,700 ppd � Source Report independently reviewed by NWRI �

Local Control for AWS Local Control for AWS 2003 SCVSD Bans Prospective AWS � 2004 SCVSD Begins Public Outreach � 2005 SCVSD Begins Phase I AWS Rebate �

Local Control for AWS Local Control for AWS (SB 475) (SB 475) � 2006 - SB 475 amended HSC Section 116786 specific to Santa Clarita Valley issues � Residential AWS control of existing installations in SCV after January 1, 2009 if: – Substantiate findings related to need for, timeliness, cost-effectiveness, and alternatives to ordinance – “Reasonable Value” rebates provided to residents before and after the effective date of ordinance – Ordinance is approved by majority vote of community • Voter materials must include cost difference of advanced treatment with and without AWS removals

Phase II Rebate Program Phase II Rebate Program

Local Control for AWS Local Control for AWS (2008 Ordinance) (2008 Ordinance) – 2008 Ordinance Findings (Required by SB 475) • Necessary and cost-effective means to achieve compliance – Alternatives to ordinance – Cost effectiveness/timeliness of alternatives vs. ordinance – Reduction in chloride levels from voluntary rebate program – Projected reduction in chloride levels from ordinance • Non-residential saline discharges limited “to the extent technologically and economically feasible” • Portable exchange softening capacity is available in Los Angeles County • Avoid or significantly reduces costs of advanced treatment to comply with TMDL

Local Control for AWS Local Control for AWS (2008 Ordinance) (2008 Ordinance) 2008 Sanitation District Adopts New � Ordinance Banning Existing AWS Santa Clara River Chloride Reduction Ordinance of 2008

Local Control for AWS Local Control for AWS (2008 Ordinance) (2008 Ordinance) 2008 SCVSD Adopts New Ordinance � Banning Existing AWS 2008 SCVSD Puts Ballot Measure “S” � on November 2008 General Election

MEASURE “ “S S” ” MEASURE 63% voted Yes � Effective January 1, 2009 � Requires removal of all � AWS by June 30, 2009 75% RV rebate eligibility � remains

Automatic Water Softeners Automatic Water Softeners SCVSD Source Control - - Results Results SCVSD Source Control AWS Public Outreach Program AWS Removed Phase I & II Rebate Program Removals(To Date) 5,900 AWS Rental Units Removal (To Date) 800 TOTAL AWS REMOVALS 6,700 ESTIMATED REMAINING AWS 300 More than 50% removals occurred after Nov-08 � $2.4 million in rebates issued to community to date �

Recycled Water Quality Recycled Water Quality Improvements from Source Control Improvements from Source Control SWP Cl as high as 95 ppm SWP Cl as high as 140 ppm 100 mg/L AWS Bans Overturned (1997)

Lessons Learned Lessons Learned – Source characterization is key, but costly • Higher AWS efficiencies do not guarantee aggregate load reductions to community sewer system – Administrative hurdles to enact ordinances were very burdensome and costly • SB 1006 requirements (non-compliance; independent study) • SB 475 requirements (pursuing legislation; referendum process) – Voluntary program with higher rebate picked off the “low hanging fruit” but not enough • Phase I rebates largely ineffective – Mandatory removals via Measure S were still needed – Source control is superior to advanced treatment – Public outreach needs to be wary of changing messages as project conditions evolve

Questions? Questions? Brian Louie Los Angeles County Sanitation Districts (562) 908-4288, ext. 2802 blouie@lacsd.org