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Contra Costa Earth Day Events 2026

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Earth Day Events

Friday, April 17

  • Walnut Creek: Green Movie Night: The Story of Plastic –Join us for our 2026 Earth Day Celebration as the Green Movie Night series presents a screening of the impactful documentary The Story of Plastic. In collaboration with Sustainable Walnut Creek, this thought-provoking film explores the global plastic pollution challenge, how recycling systems evolved, and the broader forces shaping our relationship with plastic. Through compelling footage and creative storytelling, it invites us to better understand the issue—and consider what’s possible moving forward. 6pm. Walnut Creek United Methodist Church.

Saturday, April 18

  • Antioch: Keep Antioch Beautiful Cleanup – Join the City of Antioch and help beautify the community by volunteering to do trash cleanup at the community center or landscaping at the skatepark. After your hard work, enjoy a volunteer appreciation lunch. Volunteer 9-11am, lunch 11am-12pm. Waldie Plaza & Antioch Community Center.
  • Concord: City of Concord Volunteer Events – A series of hands-on volunteer events across the city offering residents a chance to support parks, plant trees, and help care for Concord’s urban forest. A great way to get outdoors, connect with your community, and make a visible impact on Concord’s green spaces. Sign the waiver to participate. 9am-12pm at the following locations:
    • Markham Nature Park (1202 La Vista Avenue): Mulch spreading + nature walk
    • Cambridge Park (1135 Lacey Lane): Mulching + tree planting
  • Pinole: Pinole Earth Walk – Walk for clean air, clean water, renewable energy, and the protection of our health and the countless species that share this Earth with us. Environmental partners will be on-site with activities and educational resources to inspire and empower action. The walking path is approximately 1.5 miles. The walk will begin and end in Fernandez Park, following a paved loop that goes along the Pinole Creek and Bay Trail. Free event. All are welcome. 9-11:30am. Fernandez Park.
  • Pittsburg: Earth Month Guided Facility Tour – During this guided Earth Month tour, you’ll go behind the scenes at Mt. Diablo Resource Recovery and gain rare access to areas most people never see. See firsthand how they collect and process materials and maximize recycling while minimizing landfilling. Register to attend. 8-10am. MDRR Education Center.
  • Richmond: North Richmond’s Earth Day: Wildcat Creek Cleanup – Help improve local green spaces, support a healthier environment, and connect with like-minded individuals to inspire collective action for a sustainable future. 9-11am. Lucky A’s Park, North Richmond.

Wednesday, April 22

  • San Pablo: Contra Costa College Earth Day – Discover sustainability-friendly resources, connect with local programs, and enjoy fun activities. 10am-1pm. Contra Costa College Main Quad Area.
  • Pleasant Hill: *Students Only* Diablo Valley College Earth Day. 12-2pm. DVC Commons.

Thursday, April 23

  • Pleasant Hill: Pleasant Hill Earth Day Celebration – Enjoy an evening of environmental demos and activities with the City of Pleasant Hill. More than a dozen vendors will set up alongside the great food trucks of Off the Grid to provide a fantastic night of family activities. There will also be live animal displays from Lindsey Wildlife, a demonstration hive from the Mt. Diablo Beekeepers, and more. 5-7pm. Pleasant Hill City Hall.

Saturday, April 25

  • Concord: City of Concord Volunteer Events – A series of hands-on volunteer events across the city offering residents a chance to support parks, plant trees, and help care for Concord’s urban forest. A great way to get outdoors, connect with your community, and make a visible impact on Concord’s green spaces. Sign the waiver to participate. 9am-12pm at the following locations:
    • Willow Pass Park (2748 E. Olivera Road): Tree planting + mulching
    • Brazil Quarry Park (Kent Way): Fence repair, mulching + tree planting
    • Lime Ridge Open Space (3701 Treat Boulevard): Mulching, weeding + litter removal
    • Hillcrest Community Park (Grant Street & Olivera Road): Creek cleanup
  • El Cerrito: Earth Day Work Parties – You’re invited to join a work party and help beautify El Cerrito’s natural areas. The City will provide volunteers with gloves, bags and tools for their work party activity. Participants are encouraged to dress for the weather, wear sunscreen, and bring water bottles. Snacks will be provided. Choose from the following work parties:
    • El Cerrito Library Foundation Garden Clean-Up – 9am-12pm
    • El Cerrito Trail Trekkers Hillside Weed & Broom Pull – 10am-1pm
    • Fairmont Elementary School Garden Clean-up – 9am-12pm
  • El Cerrito: Earth Day Repair Workshop – Have an item that needs repair? Repair coaches will share their time, tools and expertise to consult with you on the disassembly, troubleshooting and repair of your broken items. Whether or not you fix it yourself, you’ll learn more about how your item was manufactured and how it works. Register your item ahead of time by filling out an Attendee Registration Form so that coaches can come prepared and reach out in advance if additional parts need to be procured. Registration closes Sunday, April 12th – Limit of Two (2) Items per Attendee. 1-4pm. El Cerrito Community Center.
  • Richmond: Point Pinole Invasive Plant Removal – Join the East Bay Regional Park District and help remove invasive plants from the Point Pinole shoreline. Register to attend. Bags, disposable gloves, and necessary supplies are provided. 9am-12pm. Giant Highway Staging Area, Richmond.

Sunday, April 26

  • Lafayette: Lafayette Earth Day Festival – Sustainable Lafayette will be hosting a free Earth Day Festival where you can learn how to help our planet. Enjoy family-friendly activities and connect with local eco-friendly businesses. 11am-2pm. Lafayette Plaza Park.

Wednesday, April 29

  • Pittsburg: *Students Only* Los Medanos College Earth Day. 11am-1pm.

Caltrans Night Work & Lane Closures – Week of Sept. 29

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Here’s a roundup of road work & lane closures for the week of September 29 as issued by Caltrans District 4:

Richmond-San Rafael Bridge – Now through October 2025 – Night/overnight closures of westbound (WB) Lane #2 and the Bike/Ped Path from 7pm to 5am Monday-Friday.

I-80 Night Work (Pinole/Richmond) – Now through late September 2025 – Caltrans will be performing night work on I-80 between Appian Way in Pinole and Carson Blvd in Richmond from 8pm to 5am nightly through late September. Work includes barrier repairs, lighting, and striping.

Westbound SR-4 Full Overnight Closure (Hercules/Pinole/Martinez) – Sept. 29 through Oct. 10 – Full closure of Westbound State Route 4 (SR-4) weeknights from 7pm to 6am between Cummings Skyway and San Pablo Ave. Detour: Cummings Skyway → WB I-80 → San Pablo Ave. Eastbound SR-4 NOT affected.

Richmond-San Rafael Bridge Lane Closure – October 3 – Lane #2 of Westbound I-580 on the Richmond-San Rafael Bridge will be closed October 3 from 11pm to 6am (Toll Plaza → Marin) for camera installation and deck maintenance. Lane will be #1 OPEN. Expect minor delays, merge safely.

For more information before you hit the road, check in with Caltrans District 4 at QuickMap.dot.ca.gov for real-time updates on road closures, chain controls, traffic, and more.

Contra Costa Earth Day Events 2025

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The number 2025 where the 2's and the 5 are comprised of greenery. The 0 is half of the earth with a tree growing out of soil sitting in the half-Earth like a planter.

Earth Day Events

All Month

  • Iron Horse Trail or Online: Go With the Flow – A biking (or walking) tour of Central San’s service area, following the flow of wastewater for 21 miles along the Iron Horse Regional Trail from San Ramon to Martinez. Explore all or part of the route in person or travel it virtually with the guided map tour. Self-guided tour. Location: Iron Horse Trail or online.

Thursday, April 24

  • Pleasant Hill: Earth Day Celebration at City Hall – Ride your bikes down to the event and enjoy FREE bike repair from Tasty Cycle, the little ones can take part in storytime at 5:30 with the Pleasant Hill Library’s master storyteller Patrick Remer, food trucks will be on site until 9pm, and there will be booths with information and demonstrations from over 10 vendors. 5-7pm, Pleasant Hill City Hall.

Saturday, April 26

  • Antioch: Keep Antioch Beautiful Cleanup – Join the City of Antioch and help beautify the community by volunteering to do trash cleanup Downtown or plant flowers at Prewett Community Park. After your hard work, enjoy a volunteer appreciation lunch. 9am-1pm, Antioch Water Park & Waldie Plaza.
  • Antioch: Upper Sand Creek Basin Cleanup – Join the Contra Costa Resource Conservation District (CCRCD) for a trash cleanup at Upper Sand Creek Basin to celebrate Earth Day. Cleanup 9am-noon, Upper Sand Creek Basin.
  • Crockett: Earth Day Cleanup in Crockett – Celebrate Crockett’s 5th Annual Earth Day with a waterfront cleanup from 10am to 1pm. Toss on your boots and gloves and help the CCRCD make a difference! Cleanup 10am-1pm, Crockett Waterfront.
  • El Cerrito: Go Green! Mobility Fair – At the Fair can test ride e-bike, check out innovative and discounted mobility options, learn about getting to exciting destinations without a car, discover plans for development at El Cerrito Plaza and North Berkeley BART stations, and enjoy music, food, fun and games for all ages. 11am-3pm, El Cerrito Plaza BART – North Parking Lot.
  • Martinez: John Muir’s Birthday / Earth Day Celebration – A wonderful fun-filled family day in the sun, at the grounds of the John Muir National Historic Site, which includes his 1880s Victorian home and an authentic 1849 Mexican Adobe, along with his orchards and vineyard. There will be youth activities, food and live music, and many displays relating to history, ecology, and nature. Free admission. 10am-4pm, John Muir Historic Site.
  • Orinda: Earth Day Spring Carnival – An event for families with children in elementary school in honor of Earth Day. Enjoy nature-themed carnival activities at the Orinda Day of Action. Event is free. Orinda Library Plaza (26 Orinda Way), 9-11am.
  • Walnut Creek: Unity of Walnut Creek – Tending Our Sacred Grounds – During the event, volunteers can enjoy an Earth Day ceremony, help clean up the grounds, and are welcome to bring a potluck item to share with others who care about the environment. 10am-1pm Cleanup projects. 1-2pm Plant-based potluck. Unity Center of Walnut Creek, 1871 Geary Rd.

Sunday, April 27

  • Emeryville: Shorebird Park Shoreline Cleanup – Come out to Shorebird Park on Sunday, any time from 9am-noon. Snacks and refreshments provided. As always, bring what you can (e.g. gloves, grabber, garden digging claw). Organizers will have limited supplies for those who show up without any of the above. Shorebird Park, 9am-noon.
  • Lafayette: Lafayette Earth Day Festival – Learn how you can help our planet at this family-friendly festival. Lafayette Plaza Park, 11am-2pm.

Contra Costa Earth Day Events 2024

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Earth Day Events

All Month

  • Iron Horse Trail or Online: Go With the Flow – A biking (or walking) tour of Central San’s service area, following the flow of wastewater for 21 miles along the Iron Horse Regional Trail from San Ramon to Martinez. Explore all or part of the route in person or travel it virtually with the guided map tour. Self-guided tour. Location: Iron Horse Trail or online.

Friday, April 19

  • Walnut Creek: Plan(e)t Based Diet Workshop – Speaker April Capil will guide you through the nutritional benefits of a vegetable-rich diet, share easy and delicious ways to include more greens in your daily meals, and discuss the positive effects on physical health, mental clarity, and environmental sustainability. 4-5pm, Walnut Creek Library.

Saturday, April 20

  • Antioch: Keep Antioch Beautiful Cleanup – Join the City of Antioch and help beautify the community by volunteering to do trash cleanup at Waldie Plaza or plant flowers at the Antioch Water Park. After volunteering, head to the Antioch Community Center for a volunteer lunch. 9am-1pm, Antioch Water Park & Waldie Plaza.
  • Antioch: Upper Sand Creek Basin Cleanup – Join the Contra Costa Resource Conservation District (CCRCD) for a trash cleanup at Upper Sand Creek Basin to celebrate Earth Day. If you have any questions regarding this event, or would like to attend, please send Victoria Woolfolk an email at vwoolfolk@ccrcd.org. Click here to register. Cleanup 9am-noon, Upper Sand Creek Basin.
  • Crockett: Earth Day Cleanup in Crockett – Celebrate Crockett’s 5th Annual Earth Day with a waterfront cleanup from 10am to 1pm. Toss on your boots and gloves and help the CCRCD make a difference! Click here to register. Cleanup 10am-1pm, Crockett Waterfront.
  • East Bay Regional Parks: Visit the EBRPD Earth Day Programs & Activities Page to see a list of volunteer opportunities for April 20, including habitat restoration, dune restoration, and cleanup projects. Various times and locations.
  • El Cerrito: El Cerrito Earth Day Celebration – Residents can volunteer at work parties across the city, helping clean up and beautify the city starting at 9am. Work parties (various locations) 9am-noon.
  • El Sobrante: Earth Day Cleanup & Celebration – Join the El Sobrante/94803 Green Team and SPAWNERS at the El Sobrante Library for their annual cleanup and celebration. Sign in and join Green Teams to clean up streets or SPAWNERS to clean local creeks and do landscape gardening. A celebration will follow the cleanup, featuring food, children’s art activities, entertainment, speakers, and more. Cleanup 9:30am-12pm / Celebration 12-2pm. El Sobrante Library.
  • Martinez: John Muir’s Birthday / Earth Day Celebration – A wonderful fun-filled family day in the sun, at the grounds of the John Muir National Historic Site, which includes his 1880s Victorian home and an authentic 1849 Mexican Adobe, along with his orchards and vineyard. There will be youth activities, food and live music, and many displays relating to history, ecology, and nature. Free admission. 10am-4pm, John Muir Historic Site.
  • Pinole: Pinole Earth Walk – A three-mile paved loop walk beginning and ending in Fernandez Park. Snacks and refreshments will be provided at the finish line, and there will be kids’ activities and local environmental organizations to connect with. 9am-noon, Fernandez Park.
  • Pinole: Point Pinole Beach Cleanup – Join the East Bay Regional Park District to celebrate Earth Day at Point Pinole with a shoreline Cleanup. 9am-12pm, Giant Staging Area at Point Pinole Regional Shoreline.
  • Pittsburg: Pittsburg Civic Pride Day – Get involved and take pride in Pittsburg by joining a community litter removal effort! All ages welcome. Check in at Highlands Elementary with weather-proof clothes, sturdy shoes, and a can-do attitude. Water, litter grabbers, safety vests, collection bags, and clipboards will be provided. RSVP here. Check-in 8:45am, litter removal 9am-noon. Meet at Highlands Elementary School (4141 Harbor Street).
  • Invite your friends and RSVP by reserving free tickets at pittcivicpride.eventbrite.com
  • Richmond: Wildcat Canyon Regional Park Habitat Restoration – Join the East Bay Regional Park District to celebrate Earth Day with a morning of habitat restoration at Wildcat Canyon Regional Park. 9am-noon, Alvardo Staging Area at Wildcat Canyon Regional Park.
  • Richmond: Earth Day Celebration at the Greenway – The community is invited to discover innovative methods for leading sustainable lives through engaging activities like upcycling clothes, gardening, mural painting, park and garden beautification projects, games, inspiring speakers, bike-powered smoothies, and a variety of other interactive booths. 10am-1pm, Unity Park Community Plaza (1605 Ohio Ave).
  • Richmond: Earth Day Cleanup in North Richmond – Volunteer to help clean up Wildcat Creek. Volunteers should bring closed-toed shoes, a water bottle, and clothes they don’t mind getting dirty. When you’re done volunteering, enjoy a celebration at Shields-Reid Park featuring lots of kid-friendly activities a silent auction. 9-11am: Meet at North Richmond Ballpark and volunteer, 10am-noon: Celebration at Shields-Reid Park.
  • Rodeo: Rodeo Earth Day Cleanup – Toss on your boots and gloves and help the CCRCD make a difference on Earth Day by being part of their cleanup of the Lower Rodeo Creek. Click here to register. Cleanup 10am-1pm, Lower Rodeo Creek.
  • Walnut Creek: Walnut Creek Earth Day. Enjoy live music, a kids’ zone, eco-circus entertainment, a trashy fashion show, and inspiring speakers at Walnut Creek’s Earth Day Celebration. Civic Park, 11am-4pm.
  • Walnut Creek: Broadway Plaza’s Earth Day Celebration – Take the pledge to use reusable bags each time you shop and receive a free reusable shopping bag, then you can visit the Pixie Pop-Ups Flower Truck to build your own beautiful bouquet. 11am-2pm, Event Plaza at Broadway Plaza.
  • Walnut Creek: Parkmead Neighborhood Earth Day Cleanup – Meet at the Tice Creek Elementary School parking lot from 9-11:30am. Groups will head out on pick-up routes that hit the highest litter areas, like Olympic, South Main, Tice Creek and Parkmead Schools. 9-11:30am, Tice Creek Elementary.
  • Walnut Creek: Unity of Walnut Creek – Tending Our Sacred Grounds – During the event, volunteers can enjoy an Earth Day ceremony, help clean up the grounds, and are welcome to bring a potluck item to share with others who care about the environment. 10am-1pm Cleanup projects. 1-2pm: Plant-based potluck. Unity Center of Walnut Creek, 1871 Geary Rd.

Sunday, April 21

  • Emeryville: Shorebird Park Shoreline Cleanup – Come out to Shorebird Park on Sunday, any time from 9am-11:30am. Snacks and refreshments provided. As always, bring what you can (e.g. gloves, grabber, garden digging claw). Organizers will have limited supplies for those who show up without any of the above. Shorebird Park, 9-11:30am.
  • Lafayette: Lafayette Earth Day Festival – Learn how you can help our planet at a family-friendly festival featuring free bike tune-ups, a petting zoo, kids’ activities, educational exhibits, food vendors, and more. Lafayette Plaza Park, 11am-2pm.

Monday, April 22

  • Walnut Creek: Climate Walk – Hosted by Sustainable Walnut Creek, enjoy a captivating tour around the city’s cherished creek, where you’ll witness firsthand the fruitful outcomes of various initiatives aimed at revitalizing the native plant life and enhancing the local ecosystem. 9-11am, Civic Park Gazebo.

Saturday, April 27

  • Pleasant Hill: Grayson Creek Earth Day Cleanup – Grayson Creek is home to more than 100 bird species and also provides habitat for river otters, western pond turtles, and even beavers. Help protect this important community resource by removing trash from the creek banks. Hosted by the Watershed Project, the Contra Costa Resource Conservation District, and volunteers from Friends of Pleasant Hill Creeks. Click here to register. Cleanup 9am-noon. Sign in at 250 Cleaveland Rd.

You asked, 511CC answers

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Two weeks ago, we asked you to share your hottest transportation questions.
Our trusty readers didn’t hold back! Let’s see what they said (and how we can help them find answers). Keep these questions coming, either in the comments below, Facebook, or Twitter.
Is it possible to add a bike lane from Pinole to Martinez and back? I try to commute on Alhambra Valley Rd as much as possible but it’s very narrow and vehicles drive a little too close. Another alternative would be to pave a single bike lane from Periera Rd to Franklin Canyon. It’ll allow bicycles to travel away from the main road and not have to worry about slowing down commuting vehicles. – Joe
The  Countywide Bicycle and Pedestrian Plan  indicates the following:

  • Pinole Valley Road from I-80 to Castro Ranch Road – Class II bike lanes
  • Alhambra Valley Road from Castro Ranch Road to Reliez Valley Road- Class II bike lanes
  • The Plan didn’t indicate a route from Periera Rd to Franklin Canyon.

Continue reading “You asked, 511CC answers”