Community Composting for Green Spaces

Cycle-5

A Letter of Interest (LOI) to launch a community compost hub with support from CACC is now open! LOIs will be accepted on a rolling basis, with a priority deadline of May 31, 2026 and final deadline of June 21, 2026, and full applications will be due July 2nd, 2026. Projects that that meet the CCG-5 program requirements and goals will be invited to submit full applications. Site selections will be made in July and August 2026.

¡Ya está abierta la convocatoria para presentar Cartas de Interés (LOI) para poner en marcha un centro comunitario de compostaje con el apoyo de CACC! Se aceptarán las LOI de forma continua; la fecha prioritaria del 31 de Mayo del 2026 y el fin de plazo el 21 de Junio del 2026, y la fecha de vencimiento para las solicitudes completas es el 2 de Julio del 2026. Aquellos proyectos que cumplan con los requisitos y objetivos del programa CCG-5 serán invitados a presentar la solicitud completa. La selección de las ubicaciones se llevará a cabo el Julio y Agosto de 2026.

The Open Call for LOIs begins on May 22 and closes June 21!

Since October 2020, CACC has collaborated with over 100 community-based organizations to offer financial and technical assistance to launch or expand small-scale compost operations with $4.6M in grants from the California Department of Resources Recycling and Recovery (CalRecycle). After administering two rounds of the “Community Composting for Green Spaces” CCGS grant program, CACC has supported the development of 217 community compost hubs, who last year alone produced 803 cy compost across all regions, which resulted in 206 MTCO2e of emission reductions from diverting 1,975,118 lbs of material (988 tons) - 38% was food totaling 750,957 lbs - and planting 540 trees for another 1,850 MTCO2e in emission reductions over the next 39 years. We demonstrated that it costs $175 per ton of material diverted to do this work in community, which includes the costs for local labor, infrastructure, tools, volunteer engagement and public education!

CCGS participants continue working every day to build better soil within the same community where materials are generated and achieve their reuse and recovery goals in innovative ways. The CCGS network exemplifies the diversified and decentralized organics recovery industry emerging in California that is providing important community benefits to strengthen education on compost, food security, economic resilience, and environmental justice. The community co-benefits at our compost hubs include:

  • Local access to healthy, fresh, and chemical free foods

  • Community outreach, engagement, and education

  • Green space development, habitat creation, and local beautification

  • Numerous environmental impacts, such as increased soil water retention and ground water infiltration, decreased methane emissions and increased carbon sequestration, improved soil health and biodiversity increases, and cleaner air

  • Providing financial resources to low-income residents (through both short- and long-term local job creation)

In March of this year, $2,758,312 became available from CalRecycle’s 2021-2022 fiscal budget, and they authorized the funds to be used for an extension of Community Composting for Greens Spaces (CCGS) - Cycle 2. CACC was invited to submit a proposal to extend our CCGS programming through 2028. In April, we received the wonderful news that we were awarded funding for the next round - Cycle 5! This opportunity will allow us to continue to support community composting projects statewide. CACC’s program proposal included regional outreach plans about new CCG-5 project objectives and our intent to collaborate with established CCGS community groups on the creation, improvement, or expansion of larger capacity compost hubs.

The purpose of CCG-5 remains the same as Cycles 1 and 2: to increase the number of community groups operating small-scale composting programs supporting green spaces within historically underserved communities (as defined by EnviroScreen4.0). This effort will continue to increase local composting capacity while expanding community knowledge about the benefits of compost use and proper composting techniques. Green spaces include community gardens, urban farms, parks, and other public spaces where small-scale composting is appropriate. This program will assist community groups in overcoming barriers to starting and managing community-based composting projects by providing targeted resources, such as infrastructure and training to divert materials from landfill, planning tools for local market development to sustain operations, and building long-term partnerships with cities and towns that foster community resilience. CCG-5 will culminate in an Impact Report Symposium in February 2028 where site operators will share successful models to reach economies-of-scale at community compost hubs between 200-500 cubic yards.

The objective for CCG-5 is to empower participants to be able to leverage two recent laws passed in California that allow community composting to scale and meet the state's ambitious diversion and procurement targets: SB 279 and AB 2346. Demand for compost made at CCGS sites has consistently exceeded supply, and these are two incredible opportunities that now allow community composters to increase production of “craft compost” and expand its use locally, especially for priority communities. Our proposed CCG-5 programming seeks to advance pathways for community compost hubs that maximize volume and throughput capacity (processing up to ~775 tons per year), and that engage public agencies to produce affordable, high-quality compost locally to help cities and counties meet SB 1383 procurement targets. We highly encourage (and will assist in the development of) applications from community groups that are interested in establishing Direct Service Provider agreements with jurisdictions, as well as cost-effective collaborations with local haulers for public education. For groups pursuing compost sales, CACC will assist with testing, inspections, labeling, and retail strategies to expand revenue streams.

Additionally, the project will foster strategic partnerships with municipalities, community organizations, parks and conservation districts, and local businesses to secure land access, composting feedstocks, and program support. Where needed, CACC will also guide groups in formalizing governance structures—such as fiscal sponsorships, cooperatives, land trusts, or nonprofit models—to strengthen project accountability and continuity. Together, these strategies ensure sites are positioned for long-term resilience, local integration, and sustained community impact beyond the grant term.

Infrastructure Development

CACC assists with comprehensive site planning, compliance verification, equipment purchasing, site installs, and technical assistance to ensure project feasibility and good performance, as well as that each site addresses the unique needs of its community in a way that is inclusive, sustainable, and contributes to local community and environmental health.

Training and Certification

Site operators receive hands-on training, industry certification opportunities, and ongoing mentorship to support effective compost production, tree planting and tree care, community engagement, and data tracking for the duration of the program.

Financial Planning

Projects will undergo continuous evaluation and capacity-building efforts to ensure long-term sustainability, diversified revenues, and scalable impacts, and to communicate the many co-benefits achieved through community composting to the greater public.


“Community Composting for Green Spaces” is funded by a grant from the Department of Resources Recycling and Recovery (CalRecycle) through California Climate Investments, a statewide program that puts billions of Cap-and-Invest dollars to work reducing greenhouse gas emissions, strengthening the economy, and improving public health and the environment — particularly in historically disadvantaged and low-income communities.

CCG-5 Project Timeline

May 2026

Site application process opens. Follow the link above to submit a LOI online!

May 31, 2026

Priority deadline for Letters of Interest.

July 2, 2026

Final deadline for project groups invited to submit complete applications.

June - August 2026

Site applicant interviews, site visits, and final site selections.

August 31, 2026

Project site selection process complete.

September 2026

Site Design, Project Planning, and Site Operator Training.

October 2026

Site infrastructure development and operations begins.

November 2026

Tree planting and tree care training begins.

January 2027- February 2028

Ongoing CCGS Program activities, shared learning, and assessments.

February 2028

Critical program evaluation period and final Impact Report Symposium.

Frequently Asked Questions

  • CACC hosted two Q/A sessions on Monday, May 18th from 12-1pm and Thursday, May 21st from 5-6pm. You can view the recording of the presentation held on 5/21 HERE (Passcode: Huz3v0&j) and view the presentation slides HERE.  If you have additional questions about CCG-5, please reach out to us at info@thecacc.org.

  • No!  CCGS is a comprehensive support program at no-cost to you - in which selected participants receive technical assistance, training, infrastructure and equipment, and wages directly from CACC for launching a community compost hub. Selected participants will sign a business-to-business service agreement with CACC to implement their project plans and activities.  Purchases for all eligible and approved items will be made directly by CACC beginning in August 2026 and delivered to your project location, and personnel expenses will be tracked and paid through CACC’s monthly invoicing process. Support offered from CACC’s skilled team will cover many areas associated with establishing or expanding a successful community composting program, including  community engagement and outreach, site design and compost management, volunteer coordination, financial record keeping and sustainability planning, and strengthening co-benefits such as greening spaces and educating the public.  By applying, you are stating your interest to participate in the CCG-5 program timeline, objectives and commitments.

  • CACC defines community composting as any organics recovery program for public benefit and/or for locally-distributed benefits oriented towards communities of moderate income or below, to process locally-generated organic materials, including green materials, agricultural materials, food materials, and vegetative food materials, on a small-scale within the same community where these materials are generated and which operates both a) to achieve community, social, economic, and environmental well-being and b) without compounding local or systemic environmental or social justice issues.

  • The open call for Letters of Interest (LOI) to participate in CCG-5 begins on May 22, 2026! All applicants must complete CACC’s online form HERE and upload a copy of their LOI to be considered.  LOIs will be accepted on a rolling basis, with a priority deadline of May 31, 2026, and a secondary deadline of June 21, 2026.  Applicants who meet all program eligibility requirements will receive an interview, and may then be asked to complete a full application due by 11:59pm on July 2.  Final site selections will be made by August 2026.

  • Please make sure your LOI addresses these four items:

    1. Brief mission and history of your organization and/or project collaboration

    2. Current community-based project work and project resources

    3. Past and present impacts of your project work

    4. Project vision for community compost hub with support from CCG-5

    You will need to upload your letter directly in the LOI online form.  Please use the following guidelines for writing and submitting your LOI:

    • Please keep your letter to less than 10 pages

    • We’d appreciate the use of an easily legible font and text size

    • Be sure to include your project name at the top of your letter

    • Document type(s) we accept are Microsoft Word and Adobe PDF less than 10MB

  • To be eligible, Lead and Non-Lead applicants must be one of the following entity types:

    • Local government (who MUST be in formal partnership with a local community-based organization to implement project activities at the compost site in order to apply) and may include:

      • Cities, towns, and/or counties

      • Regional or local sanitation districts, municipal solid waste divisions, and/or joint powers authorities

      • +1 bonus point for collaborative local government-sponsored projects

    • Private, for-profit business (NOT including solid waste enterprises, franchised haulers, de-packaging operations, or environmental services providers)

    • Nonprofit, community-based, and/or civic organizations

    • Schools and universities

    • Correctional facility

    • California native tribes

      • +1 bonus point for tribal-led projects

    The Lead applicant must have (or can secure before applying):

    • A project that creates new or expands existing community composting capacity

    • A project site located in California and open to the public for at least 4 hrs/week

    • A formal agreement to use the site for composting through April 4, 2028

    • General liability and worker’s compensation insurance coverage

    The project scope should:

    • Be located in, serve, and/or benefit Priority Populations as defined by ARB Priority Population Tool

    • Meet CCG-5 objectives to advance pathways for community compost hubs that maximize compost production and achieve sustainable operations

  • Yes!  CACC will review all LOIs regardless of location.  CACC’s site selection process will prioritize applications who are located within or benefiting Priority Populations in the following ranked order:

    4. Project sites located in and serving disadvantaged communities

    3. Project sites located in and serving disadvantaged and low-income communities

    2. Project sites located in and serving low-income communities

    1. Project sites providing benefits to, but not located within, disadvantaged and/or low-income communities

    0. Project sites not located in and not benefiting disadvantaged and/or low-income communities

    Please use the California Air and Resource Board’s Priority Population Tool to locate where you are on the map of communities that California Climate Investments defines as disadvantaged and/or low-income.

    ***Note that some federally recognized California Tribal Lands do not appear indicated on this map (or others). CACC has already reached out to CARB, and will provide a follow up on eligibility. Please contact us to ensure eligibility beyond what this map shows. Also note, a project site located in a non-indicated area, at a verified low-income home can be ranked higher than zero.

  • CCG-5 is being conducted as a statewide program this cycle.  However, we still want to distribute resources and technical assistance proportionate to interest and needs across all areas in California!  As part of the LOI application process, please indicate your region based on the county where your project is located and as follows:

    Greater Bay Area: Alameda, Contra Costa, Marin, Monterey, Napa, San Francisco, San Mateo, Santa Clara, Santa Cruz, Solano, Sonoma, and San Benito

    Central Sierra: Alpine, Amador, Calaveras, Inyo, Mariposa, Mono, and Tuolumne

    Sacramento Valley: Butte, Colusa, El Dorado, Glenn, Placer, Sacramento, Shasta, Sutter, Tehama, Yolo, and Yuba

    San Joaquin Valley: Fresno, Kern, Kings, Madera, Merced, San Joaquin, San Luis Obispo, Stanislaus, and Tulare

    Northern Area: Del Norte, Humboldt, Lake, Lassen, Mendocino, Modoc, Nevada, Plumas, Siskiyou, Trinity, and Sierra

    Inland Empire: Riverside and San Bernardino

    San Diego and Imperial Area: San Diego and Imperial

  • CACC will be offering assistance to interested groups for the duration of the LOI submission, review, and full application process. Please reach out to us at info@thecacc.org if you need assistance, have specific questions about your project idea, or if you have any general CCGS program questions.

  • In accordance with Senate Bill 279 passed in October 2025, compost operations with less than 200 cubic yards of material on-site at any one time are excluded from the state’s permit requirements and can operate stand-alone compost facilities without needing approval from local enforcement agencies or partnership with public agencies. If a project has greater than 200 cubic yards of material on-site at any one time but less than 500 cubic yards, it must be owned by a public agency to be exempt from facility permit requirements.  Projects between 200 and 500 cubic yards not owned by a public agency and any project greater than 500 cubic yards will need a full solid waste facility permit in order to receive and manage food materials.

    There is no volume limit for on-farm composting operations that assist farmers and winegrape growers once every ten years to compost large amounts of agricultural materials onsite (e.g., when clearing an old orchard) and blend their biomass with offsite food and green materials.

    If a project is processing greater than 500 cubic yards on-site at any one time of only yard waste and agricultural materials (no food waste), CACC will require the applicant to provide a copy of their appropriate tiered permit as part of your application.

    There is no minimum or maximum site acreage or site volume capacity to be eligible for CCG-5 support.  CACC will evaluate your project in terms of right-sizing square footage with annual throughput estimates, and ensuring it is already in compliance with current state and local regulations prior to project selection and launch.  The maximum amount of finished compost that “excluded” on-farm or community composting operations can distribute offsite annually is 5,000 cubic yards.

  • It is possible for a project to qualify for no-cost support even if it is located in areas where municipal composting services exist as long as project applicants can document that the project creates capacity for new diversion. This means the material diverted to the project location must currently be going to the landfill and that local services do not currently provide options to divert the proposed source of generated materials.

  • CCG-5 participants will receive no-cost support for site development, project infrastructure and tools, trees, composting testing, and public outreach and education materials. Project participants will also be compensated for their time contributing to project activities at the project location.  Expenses that are eligible may include but are not limited to:

    • Personnel wages (valued at $33/hr to cover base wages + fringe benefits)

    • Composting bins, 3-bay, or windrow systems

    • Vermicomposting bins or systems

    • Materials to build composting bins, vermicomposting bins, 3-bay, or windrows

    • Cement pads, gravel pathways, and storm water mitigation systems

    • Aeration and/or irrigation systems for composting operations

    • Solar power infrastructure

    • Mechanized equipment to assist in high throughput capacity

    • Basic equipment and tools to assist in composting or collection operations

    • Storage containers for equipment and tools

    • Security tools

    • Fencing to protect/screen views of composting area

    • Trees for windbreak/screen views and/or growing food

    • Educational signage for composting operations

    • Outreach and workshop materials for training community members, such as fliers, brochures, handouts, signs, social media, and videos directly supporting project

    • Soil/compost testing and shipping fees

    • Bicycles or tricycles, including e-bikes, as well as their service and repair costs

    • bicycle trailers for feedstock collection and/or delivery of finished compost

    • Compost thermometers and metrics tracking logbooks

    • Bulking agents (carbon feedstocks) or chipping services to acquire carbon materials

    • Permit and/or site inspection fees

  • CCG-5 participants will not be able to use project funds to purchase the following items: 

    • Environmental review for project permitting, including the preparation of Environmental Impact Reports (EIRs) or related documents

    • Purchase, rent, or lease of land or buildings

    • Grinders and chippers

      • Except when the project participant(s) have a service contract in place where the ownership of this equipment will be with a local jurisdiction/public entity with a trained operator

    • The purchase of or retrofitting of vehicles including cars and trucks

    • Gas or diesel to power mechanized equipment

    • Promotional giveaway items/SWAG (Stuff We All Get). Ineligible giveaway items include but are not limited to keychains, coffee mugs, water bottles, hats, t-shirts, pens, pencils, flash drives, reusable bags, magnets, etc.

    • Costs deemed unreasonable or not related to project by CACC/CalRecycle

    • Cash payments for project expenses of $500 or more

  • No… and yes;-)  In your LOI, CACC wants you to tell us exactly what you need, what you already have, and what you can source with additional support if possible to make your project feasible.  The more cost effective your project is in terms of cost per ton of material diverted from a landfill, the higher it will score.  CACC has dedicated $1.38M, or two-thirds of our CalRecycle grant award, to be directly spent on program participants for implementing project activities, public education, green spaces beautification, and workforce development.

    At the upper budget limit, our team has estimated that a project processing 200-500 cubic yards of materials and that is also launching from scratch may need ~$150K-$185K in seed funding to develop safe and compliant project sites and acquire mechanized equipment.  We have also estimated that it may take between 15 to 20 hours per week of site operations and maintenance to manage weekly materials flows at this scale, which is valued at $33/hr to cover base ages to site operators and fringe benefits paid by employers.  CACC is prepared to maximize the reach of our CCGS funding resources and support the most amount of sites within our limitations.

  • SB 1383 Procurement Target refers to the requirement that California cities and counties buy a specific amount annually of "recovered organic waste products" (RWOPs) - like compost, mulch, renewable energy, or biogas. This mandate aims to reduce landfill waste and greenhouse gas emissions, and is based on 2021 population rates or most recent waste characterization studies. 


    Direct Service Provider (DSP) Contract is an agreement a local government makes with an outside entity (e.g., a landscaper, organics material hauler, or compost facility). It allows that entity to procure, use, or distribute RWOPs on the jurisdiction's behalf, allowing the city/county to count those actions toward its procurement compliance goals.

  • The Application Phase will run May 2026 - August 2026. CACC will first conduct targeted outreach to identify and empower qualified organizations from priority populations interested in scaling operations, followed by comprehensive site planning, compliance verification, and technical assistance to strengthen feasibility and good performance at higher capacity for each applicant. The Program Duration Phase will run August 2026 - February 2028.  CACC will coordinate procurement and installation of infrastructure, equipment, and tools needed to launch sites. Once operational, sites will process organic materials for up to 78 weeks, distribute finished compost locally, and host public workshops and demonstrations. Site operators will receive hands-on training, certification opportunities, and ongoing mentorship to support effective compost production, tree planting and tree care, community engagement, and data tracking for the duration of the program. Projects will undergo continuous evaluation and capacity-building efforts to ensure long-term sustainability and scalable impacts throughout 2027, and to communicate the many co-benefits achieved through community composting to the greater public at the Impact Report Symposium planned for February 2028.