HomeMy WebLinkAbout2021/07/13 Item 4.1 PresentationJuly 13, 2021
SB 1383 EXPANDS CALIFORNIA’S CLOSED LOOP ORGANICS
RECYCLING ECONOMY
Demand for Recovered Organic Waste
Products Drives Infrastructure Investments
Procuring Recovered Organic Waste
Products is Vital to Closing the Loop 5
UTILIZING RECOVERED ORGANIC WASTE PRODUCTS
Renewable Fuel
•City-owned
Vehicles
•Contracted
Waste Haulers
•City Bus System
Compost & Mulch
•City Parks
•Landscaped
Center Divides
•Community or
School Gardens
•Erosion Control
Along
Roadways
•City Hosted
Compost and
Mulch
Giveaways
Renewable Elec
•Organics
Recycling
Facility
•Buildings or
Infrastructure
•Public
Wastewater
Treatment
Plant
Renewable Heat
•Space Heating
•Cooking
•Digesters
Mulch = 22,000 tons
Compost = 12,760 tons
Elec from Biomass = 14,300,000 kWh
Renewable Fuel = 462,000 DGE
Renewable-Gas Elec = 5,324,000 kWh
PROCUREMENT OF RECOVERED ORGANIC WASTE PRODUCTS
Jurisdiction’s
Population
0.08
Tons per
Capita
Factor
X =Jurisdiction’s
Procurement
Target
X Conversion
Factor for
Products
=Amounts of
Recovered
Organic Waste
Products
Procurement Formula
Chula Vista
Population:
275,000 Res.
22,000
Tons of
recovered
organic waste
products
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PROCUREMENT OPTIONS
Direct Procurement
Jurisdictions can procure recovered organic waste products directly for
use or giveaway.
Compost for City-Managed Public
Landscaping
RNG for City-Owned Vehicles
Direct Service Provider
Jurisdictions can meet their procurement requirement by contracting
with a service provider that uses recovered organic waste products
like compost or renewable natural gas.
Waste Haulers
Landscape Services
Transportation Services
Procurement Does NOT Necessarily Mean
Purchase!
Jurisdictions that own an organics recovery facility can procure end
products for city/county use.
This Can Be a Paper Transaction.
There are no requirements that a jurisdiction’s procurement must be of
products produced within your jurisdiction or produced from organic
feedstock materials collected within your jurisdiction.
POTW Renewable Gas for On-Site
Electricity Needs
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1.5 Million Tons
COMPOSTABLES/ORGANICS
Landfilled Diverted
3 to 4 Million Cubic Yards
COMPOST AND MULCH
Recovered Products
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Source: CalRecycle Compost = Carbon Sequestration + Climate Resilience
Compost Best Management Practices
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Aligns with Climate Action Plans & complies
with state requirements.
Improves Stormwater Quality and Reduces
Erosion
•Significantly reduces runoff volume
•Nutrients and pollutants are decomposed by naturally
occurring microorganisms
Carbon Benefits
•Encourages healthy soils 🡪carbon sequestration!
•Promotes establishment of vegetation
Improves Soil Structure and Nutrient Content
•Better plant health. Reduces need for chemical
fertilizers, pesticides, and herbicides
Image Credit: Caltrans
Compost Socks
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1 Year Later Lilac Fire-Construction BMP
Image Source: Dr. Craig Kolodge, Filtrexx
Compost Berms, Socks & Blankets
Compost Blanket
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Bonded Fiber Matrix (Hydromulch) & Straw Wattles
Image Credit: Caltrans
High Wall Project
Project Highlights:
▪7 acres severe slope. 964 CY of Compost. 1” depth.
▪Trials of alternative BMPs failed on the steep slopes.
▪$52,000 installed cost*
▪Projected Water Savings: >10 Acre-Ft.
▪Carbon Benefits: 630 MTCO2e and $130,000 in
environmental and public health benefits **
*current dollars
**preliminary estimate, total life cycle
Seeded Compost Erosion Control Blanket
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Image Source: Dr. Craig Kolodge, Filtrexx
NEXT STEPS
3. Communications and Training to staff and contractors on operational,
environmental and economic benefits of using compost/mulch
1. Evaluate projects using a Full Cost Analysis through use of tools and case
studies to demonstrate economic and environmental value of best management
practices
2. Develop Policy and Performance Based Procurement updates to address erosion
control & water quality project specifications using locally produced compost/mulch
4. Develop an inventory of your agency’s current compost/mulch purchases and
estimate your procurement target using the CalRecycle’s procurement calculator
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Manuel Medrano,
Environmental Services Manager
mmedrano@chulavistaca.gov
(619) 585-5766