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CVSan is committed to engaging the Castro Valley community in the 4Rs and Zero Waste activities.  We offer a wide range of programs on topics including zero waste and composting, as well as educational workshops which include electronics repair workshops and school presentations.  We also offer tools to help you at home, such as the “Build Your Own Sign” tool for your recycling, organics, and garbage bins and event recycling tools to help you with greening your home and for community events.  Please read on for some of our many programs and services in this area.

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Community Group Outreach

CVSan anticipates many speaking engagements during the  year on various programs and  waste reduction topics. Speaking engagements are intended for the Castro Valley community. When determining which events will be attended, preference may be given to groups with a higher percentage of CVSan attendees.


CVSan regularly donates materials to the community to assist with waste reduction.  Examples of past donation requests include:

  • Clearstream containers (bottles and cans, or organics)
  • Slim Jim containers with lids (recycling or organics)
  • Drop boxes (for recycling, organics, or garbage)
  • Carts (for recycling, organics, or garbage) 
  • Compost and Mulch
  • Used Oil Recycling Promotional Items, and much more.

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Earth Day

Every April, CVSan presents the Annual Earth Day event, Recycles Day and Compost Give-Away. Over the course of six and a half hours, over one thousand CVSan residents and businesses participate and show their spirit and environmental responsibility by disposing of e-waste and other items during the event at allocated stations. Over five hundred members of the community regularly volunteer their time for the Earth Day Clean-up.

Event Greening

CVSan promotes the 4Rs (Reduce, Reuse, Recycle, and Rot), through community events where the 4Rs are utilitzed and demonstrated. Modeling the 4Rs helps save money while conserving resources.  CVSan offers  a variety of key resources and expertise to help with event greening using the 4Rs.  If you are ready to reduce the amount of waste your event creates, we are ready to help.

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Green Hearts Volunteer Program

The CVSan Green Hearts Team is for members of the Castro Valley community who are looking for a great way to give back to the environment and to Castro Valley.  Green Hearts Team volunteers will wear their hearts on their sleeve with the goal to help others compost, recycle, and beautify Castro Valley all year round.  Green Hearts volunteer opportunities include the following: Event Recycling and Organics (Compost) Station Monitoring, Cleanup Assistance, Food Scrap Recycling Visual Audits, Clerical Assistance, CVSan Social Media Promotion, and more.


Repair Workshops

Bring your non-functioning or unusable things (electronics, small appliances, computers, toys, bicycles, etc.) for assessment, disassembly, and possible repair.  A workspace, specialty tools, and guidance will be provided to help you troubleshoot issues with your item.  Whether your item is repaired or not, you’ll learn more about how it was manufactured, how it’s supposed to work and how to fix it yourself.  Children must be monitored by an adult at all times.  

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School Programs

CVSan provides technical and financial assistance in designing and enhancing waste reduction and recycling programs for Castro Valley schools.  If you are ready to reduce the amount of waste your school generates, we are ready to help you!  Read below to learn more about our school programs and resources to help your school send less to the landfill. 


Individual Community and Education Web Pages:

Build Your Own Sign

Community Group Outreach Application


Davis Street Transfer Station Tour 

Donation Request Form

Earth Day

Event Recycling

Green Hearts

Repair Workshops

School Programs