Devil's Gate Reservoir Restoration Project

Excavation of sediment from Hahamongna Park is well underway. Information on the project, timing, truck maps and many other details can be found at The parent group, LCF 4 Healthy Air, has been working with local, county and state officials to try to improve the safety of the project, but those officials need to hear from you too.

For your overall concerns about the project, call LA County Supervisor’s Kathryn Barger’s San Gabriel Valley Field Deputy, Sussy Nemer at (626) 356-5407. 

On city streets, if you see a traffic concern, heavy dust, or trucks spilling sediment, contact:


On the 210 freeway, if you see a traffic concern or trucks spilling sediment, contact:

For more information on the project, consult the resources listed below:





In the News:

“Regulators crackdown on illegal emissions control systems”

  • Why diesel trucks aren’t required to get smog checks. Date = July 24, 2017

  • Recall announced by EPA in July, 2018 about 500,000 PM filter units being recalled.