WMP Implementation Costs for the Los Cerritos Channel

WMP Implementation Costs for the Los Cerritos Channel, Lower Los Angeles River, & Lower San Gabriel River WMGs Presented by John Hunter & Richard Watson April 11, 2019

WMP Implementation Lower Los Angeles River Los Cerritos Channel Lower San Gabriel River • • • • • Artesia Bellflower Cerritos Diamond Bar Downey Hawaiian Gardens La Mirada Lakewood Long Beach Lynwood Norwalk Paramount Pico Rivera Santa Fe Springs Signal Hill South Gate Whittier Los Angeles County Flood Control District 2

Compliance Milestones Prior to the development of the WMPs, watershed modeling predicted the total structural BMP capacity needed to comply with final water quality limits: • Lower Los Angeles River: 803. 2 acre-feet • Los Cerritos Channel: 592 acre-feet • Lower San Gabriel River: 118. 6 acre-feet 3

Compliance Costs Using the real-world costs of $800, 000 -$1, 200, 000 per acre-foot*, the costs of implementation to comply with the final Metals TMDL deadlines could be: • Lower Los Angeles River: 803. 2 acre-feet x $1, 200, 000/acre-foot = $964 million • Los Cerritos Channel: 592 acre-feet x $1, 200, 000/acre-foot = $710 million • Lower San Gabriel River: 118. 6 acre-feet x $1, 200, 000/acre-foot = $142 million • Total Structural BMP Capacity: 1, 513. 8 acre-feet • Total Implementation Cost: $1. 8 billion *based on costs from the projects at Bolivar Park, Caruthers Park, Long Beach Airport, and Mayfair Park 4

Measure W will be providing Annual funding Funding for the Los Cerritos Channel, Lower Los Angeles River, and Lower San Gabriel River WMGs Local Regional* Total $19. 21 million $31. 3 million $50. 51 million *less any funds awarded to the Lower Los Angeles River Upper Reach 2 WMG and to the Nearshore Watershed in the City of Long Beach In ten years, we will be just a little less than 1/3 of the way to our goal 5

Program and Project Costs • Program costs are difficult to estimate at this time. • Depends partially on permit requirements • Depends partially on State Water Board Policy Requirements • Depends partially on effectiveness of source control, runoff reduction, and sediment control • Project costs are expensive, particularly up front. • Depends on mix of centralized and de-centralized projects • Cost effective water capture for water resiliency and water quality improvement will probably emphasize centralized water capture projects, at least at first. • Also depends partially on effectiveness of source control, runoff reduction and sediment control 6

Los Cerritos Channel Watershed Experience • Our Watershed is fortunate to be able to fund four water capture projects with initial funding of $50 million dollars, since expanded to $61. 75 million. • We learned that our initial cost estimate to capture 592 acre-feet was low. • Watershed emphasizing source control, runoff reduction, sediment control, and now water capture to reduce costs Treatment Controls Capture and Use Capture and Infiltration Treatment Controls Operational Source Control LID and Green Streets TSS Reduction Capture for Infiltration or Use TSS Reduction Runoff Reduction True Source Control Original Hierarchy New Hierarchy 7

Potential Funding Strategies for Implementation of New MS 4 Permit • Implementation of Measure W is critical • Not enough by itself • Need to leverage funds • Need to issue bonds early because no escalator in Measure • Supplementing Measure W is also critical • State Bond Measures with Measure W matching funds • Clean Water State Revolving fund now a possibility with Measure W • Other supplemental sources such as union funds, bank funds, and foundation funds 8

Funding Issues • To be able to leverage money early • Caltrans Cooperative Implementation Agreement Program does not have line item budget • Need to focus on watershed project investments • Need to spend money on technical assistance and scientific studies early in stormwater investment planning process • Need variances on implementation of key pollutants – bacteria and metals – to allow time for standards based on best science to be implemented (risk-based bacteria standards and biotic ligand model [BLM] or multiple linear regression [MLR] standards for metals. ) 9

Questions? 10