1 San Leandro Water Pollution Control 10 Year Capital Improvement Plan 2 Capital Improvement Plan Goals
Goals:
• Respond to changing regulations
• Maintain high-functioning facility
• Set a basis for ongoing cash flow management and
sewer rate study
Note: All CIP estimates in 2024 dollars
3 Plan Overview
Process:
Analyzed prior studies, current and upcoming
regulations and each part of the treatment process.
Major findings:
• Nutrient removal will require plant upgrades
• Plant benefits from recent $50M rehabilitation project, which improved the liquid processing facilities
• Solids handling processes due for upgrades over the
next 10 years
• Recommend full sewer line replacements
4 Harmful Algal Blooms (HABs)
• Algal bloom in San Francisco Bay killed thousands of fish in 2022.
• Algae use nitrogen as a nutrient and sunlight to grow. When they die, the decay causes a drop in dissolved oxygen in the water, which causes fish mortality.
• SF Bay has historically been resistant to nitrogen, but that is waning because of climate change and increased water clarity. • In July 2024, the SF Bay Regional Water Quality Control Board (“Water Board”) mandated 40% reduction in nitrogen discharged to SF Bay levels by 2034.
• Removing nitrogen from wastewater requires treatment plant upgrades. Estimated SF Bay-wide cost is $11B. 2018 Nutrient Study estimated capital costs of $60M for San Leandro. Photo: Ingrid Taylar, https://www.flickr.com/photos/taylar/ 5 Nutrient Strategy
• Implement Treatment Wetland project, which will be approximately 15% - 20% reduction. Current cost estimates are $9.5M, but $6.7M in grants already secured. • Engage experts to identify cost-effective strategies for nutrient reduction. • Develop implementation plans that can be used to apply for grants • Set aside $2M per year for nutrient expenses, which will be refined over the first years of the 10- year planning period.
6 Collection System Renewal Program
• City has about 125 miles of sanitary sewer,
with some pipes are approaching 100 years
old
• Recommend replacing 1% of the system per
year
• Target areas that are most in need of
replacement first
• Set aside approximately $2.2M annually to
fund program
7 Other Major Items
• Solids handling and processing
• Digester 1 & 2 Improvements
• Belt Press Replacement
• Thickening upgrade
• Effluent Pump Station
• Complete energy efficiency project
• Remove old Fixed Film Reactor
8 CIP Expenditure by Year and Type
9 What’s next?
October 2024: Appropriate funds $2,660,000 for FY 2024-2025 capital program
Early 2025: Complete sewer rate study, which will include cash flow analysis and recommend rate increases
Spring 2025: Commence Prop 218 process to set sewer rates 10 Questions?