Hahamongna Updates
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Devil's Gate EIR Toolkit
The Los Angeles County Flood Control District has now issued court-mandated revisions to their Environmental Impact Report (EIR) for their Big Dig project in Hahamongna Watershed Parhttps://www.arroyoseco.org/images/steps.jpg.
Here you will find tools to give your information and background to help you prepare your comments for the revisions. We will be adding additional material, so check back regularly for new resources and to view the public comments.
The revisions were issues July 24, initiating a forty-five day public review period. Interested members of the public as well as organizations and public agencies can provide information or critical comments about the revisions, to which the Flood Control District must respond.
The deadline for comments is September 7th, 2017.
The revised EIR will then go to the County Supervisors, who must review and certify that the Flood Control District fully complies with California environmental law. The Supervisors can also make additional changes to the project, reducing its scope, timing and devastating impacts.
Finally the program must got back to Judge James Chalfant for his final review of the projects and its compliance with the California Environmental Quality Act.
Devil's Gate Dam
Arroyo Seco Flood Timeline History Map
Sediment Management
Sediment Analysis - 1980 Philip Williams Hahamongna Sediment Study - 2000 A New Paradigm (slides) A New Paradigm (video)
Hahamongna Watershed Park
Hahamongna Master Plan Habitat Wildlife News
County Environmental and Planning Documents
EIR Notice of Preparation EIR Initial Study Project Description Original Presentation – November 2010 Biological Survey Short Term Solution Critical Issues Report – Interim Measures
Original EIR Comments Were Due November 11, 2011
Public Comments to Draft FEIR (2014)