What Do You Know About Composting?
• What is composting?
• What different types of composting are there?
• Why is composting important and why will it
become more important in the future?
• Why is composting important to Chabot?
• Is composting safe?
• What can you use compost for?
• How many people compost now?
• How long does composting take?
Galaxy Explorer Survey Results
86 Galaxy Explorers were surveyed about composting. Here are the results:
47.7% (41) Have compost bins at home
48.8% (42) Do not have compost bins at home
3.5% (3) Not Sure
Of the 47.7% (41) of the Galaxy Explorers who have compost bins at home
only 43.3% (39) of GE families use them meaning that only 20.5% of
surveyed Galaxy Explorer Families are effectively composting. That’s only 1/5!
Further Questions and Comments:
•It's likely that many families have bins and GE's are unaware and therefore don't use them.
•Do Galaxy Explorers distinguish between composting at home versus sending material
away for someone else to compost?
What is Compost?
Different Types of Composting
• Vermicomposting (Worm Composting)
• “Basic” Yard Waste Composting
• Large Scale Composting
• Citywide Pick-up Programs
The Composting Venn Diagram
Yard Waste Composting
City Collection Programs
We have been using our
Worm Biostack at Chabot for
over 3 years!!!!
• Composts 20 lbs./day
• Pest resistant
• Locking door
• Easy to maintain
“Basic” Yard Waste Composting
Location of our WORM and
YARD WASTE Composting Bins!
Large Scale City Collection
Almost all local cities compost yard waste. These
are some of the cities that now also collect food
scraps along with yard waste.
• Alameda • Oakland
• Albany • Pleasanton
• Castro Valley • San Francisco
• Emeryville • San Leandro
Composting is important to
• Strong Ethical Reasons
• Educational Opportunity
• Waste Reduction
• Grant Opportunity
• Part of mission to teach visitors about
If We Don’t Recycle…
Worm Composting Demo
Bradley Christabel Sareena
Reagan Derek Nick
Enviro Team 2003
From 6 Dumpsters per week…
To 4 Dumpsters per week…
To 2 Dumpsters per week!
Related Grant Awards
• $5,700 - Alameda County Waste Management
$ Authority - 2003
• Large Worm Biostack
• Staff Awareness
• $10,700 – Altamont Landfill Settlement I - 2005
• 10 paid college interns ($500 each)
• Educational Program Improvements
• $ 50,000 – Altamont Landfill Settlement II - 2006
• 10 paid college interns ($2000 each)
• Summer Camp Support
• Recycling Improvments (New bins, raised public awareness
expansion of what gets recycled)
Grant Awards (continued)
• $50,000 – Stopwaste.org (Alameda County
Waste Management Authority II) 2007
• Funded waste portion of “Beyond Blastoff” exhibit
• $ 150,000 – Altamont Landfill Settlement III –
2007 - 2010
• 3 years of steady funding
• 30 paid college interns ($2000 each)
• Create zero waste lunch program for camps, school class and
TOTAL = $266,400
Over a quarter million dollars!
Summary of Results to date…
The amount food waste fed to the worms to date is over… 1000 lbs!
Our visitors have learned about composting for 5 years so far.
Chabot has received $266,400 in related grants and has collected nearly
$1000 for aluminum cans, bottles, inkjet and toner cartridges to date.
Plus a large amount of nutrient-rich vermicompost soil amendment
has been produced and used by many of our staff and visitors in their garden
• Further Waste Reduction
• Chabot Visitor Lunch Composting?
• New Educational Demos
• New Grant Opportunities
How about only 1 Dumpster per week?
Local Organizations that
Common Ground Organic Garden Supply and Ed Center (Palo Alto)
Garden for the Environment (San Francisco)
Haight Ashbury Neighborhood Council (San Francisco)
Northern California Recycling Association (Berkeley)
RecycleWorks of San Mateo County (Redwood City)
San Francisco Department of the Environment (San Francisco)
Andrew Maria Eric Alex
Enviro Team 2006
So… What is the Galaxy Explorer
Enviro Team of 2007-08 gonna do?!!!