Free Sat, Sep 21 9:00 AM Marsh Creek and Delta Cleanup 2019 Pick from 6 sites along Marsh Creek, Oakley and Brentwood Free Sat, Sep 15 9:00 AM Marsh Creek and Delta Cleanup 2018 Brentwood, Brentwood Free Sat, Sep 16 9:00 AM Marsh Creek and Delta Cleanup 2017 Brentwood, Brentwood Free Sat, Dec 17 9:00 AM Wetland Ecology and trash pick up at Upper Sand Creek Basin Upper Sand Creek Basin, Antioch Free Sat, Nov 19 9:00 AM Upper Sand Creek Basin, Ecology walk and trash pick up Upper Sand Creek Basin, Antioch Free Sat, Sep 17 9:00 AM Marsh Creek and Delta Cleanup 2016 Brentwood, Brentwood Free Tue, Jul 26 9:30 AM Trash Assessment Day Oakley & Brentwood, Oakley Free Sat, May 14 9:00 AM Trash Clean Up Community Service Oakley, Oakley Free Sat, Apr 23 9:00 AM Celebrate Earth Day Upper Sand Creek Basin, Antioch Free Sat, Apr 16 9:00 AM Marsh Creek Day, High School volunteer sign-up Creekside Park, Oakley $0 - $10 Sun, Mar 20 6:00 PM Open Roads and Marsh Creek Viewing Party Providence Bar & Eatery, Oakley Free Mon, Feb 15 9:00 AM Presidents Day Community Service Day at Upper Sand Creek Basin Upper Sand Creek Basin, Antioch Free Mon, Jan 18 9:00 AM Martin Luther King Day of Service East Contra Costa , "A Day On, Not A Day Off" Oakley & Antioch, Oakley Free Sat, Dec 12 9:00 AM Wetland restoration and an opportunity for Community Service hours, 12 Dec. Upper Sand Creek Basin, Antioch Free Sun, Oct 25 10:00 AM 25 October, Weeding and Mulching at Creekside Park Creekside Park, Oakley Free Sat, Sep 19 9:00 AM Marsh Creek and Delta Cleanup 2015 Marsh Creek Watershed Free Sat, Jul 18 8:30 AM Sat. 18 July, Upper Sand Creek Basin: (5 of 5) Restoration maintenance, weeding and watering saplings. 6600 Deer Valley Rd, Antioch Free Tue, Jul 14 8:30 AM Tues. 14 July, Upper Sand Creek Basin: (3 of 5) Restoration maintenance, weeding and watering saplings. 6600 Deer Valley Rd, Antioch Free Tue, Jul 7 8:30 AM Tues. 7 July, Upper Sand Creek Basin: (2 of 5) Restoration maintenance, weeding and watering saplings. 6600 Deer Valley Rd, Antioch Free Wed, Jul 1 8:00 AM Wed. 1 July, Upper Sand Creek Basin: (1 of 5) Restoration maintenance, weeding and watering saplings. 6600 Deer Valley Rd, Antioch Free Wed, Jun 24 9:00 AM Trash Assessment Day Oakley, Oakley Free Sat, Jun 20 9:00 AM Water Quality Workshop Big Break Regional Shoreline, Oakley Free Sat, May 9 9:30 AM Getting to know Marsh Creek Top to Bottom Hike 4- Marsh Creek Reservoir Marsh Creek Reservoir, Brentwood Free Sat, Mar 14 9:00 AM Getting to know Marsh Creek Top to Bottom Hike 3- Volcanoes and Mercury Mines – in Clayton? State Park parking area off Morgan Territory Rd, 1/10 of mile from the intersection of Marsh Creek Rd. and Morgan Territory Rd, Clayton Free Sat, Feb 21 9:00 AM Getting to know Marsh Creek Top to Bottom Hike 2- Curry Point to Frog Pond Hike with Save Mount Diablo Free Sat, Jan 24 9:00 AM Getting To Know Marsh Creek- Top to Bottom Hike 1 Morgan Territory 9401 Morgan Territory Rd, Livermore Free Mon, Jan 19 9:30 AM Martin Luther King Day of Service Upper Sand Creek Basin Project: Giving the Natives a Chance Upper Sand Creek Basin, Antioch Free Sat, Sep 20 9:00 AM Marsh Creek and Delta Cleanup 2014 Marsh Creek Watershed Free Tue, Sep 16 5:00 PM Creek Cleanup Supply Prep Get Together City of Oakley Recreation Buildings, Oakley Free Sat, Aug 30 8:30 AM Mulching at Upper Sand Creek Basin Project: Giving the Natives a Chance Watering and Mulching! Upper Sand Creek Basin, Antioch Show more