California Code of Regulations
Title 14 - Natural Resources
Division 2 - Department of Conservation
Chapter 8 - Mining and Geology
Subchapter 1 - State Mining and Geology Board
Article 2 - Areas Designated to be of Regional Significance
Section 3550.5 - San Gabriel River, Eaton Wash, Devils Gate, and Palos Verdes Areas of the San Gabriel Valley Region, los Angeles County
A set of maps identifying the exact locations of the designated areas, entitled "Updated Designation of Regionally Significant Construction Resources in the Northern San Gabriel Production-Consumption Regions, Los Angeles County, California, 2013" and "Updated Designation of Regionally Significant Construction Aggregate Resources in the Eaton Wash, Devils Gate Reservoir, and Palos Verdes Areas, San Gabriel Production-Consumption Region, Los Angeles County, California, 2013" is incorporated by reference into this regulation. The areas for designation or termination of designation are shown on the two Plates. These maps are available from the State Mining and Geology Board's office in Sacramento.
The construction aggregate deposits in the following areas have been designated as being of regional significance:
Sector A--Offstream and instream deposits of the San Gabriel River below Morris Dam near Azusa.
Sector B--Instream deposit consisting of the flood control channel of the San Gabriel River upstream of Foothill Boulevard near Azusa.
Sector C--Instream deposits in a portion of the Santa Fe Flood Control Basin and spillway channel near Irwindale.
Sector D--Offstream and instream deposits in the western portion of the San Gabriel River Fan near Baldwin Park and Arcadia.
Sector E--Offstream deposits in the eastern portion of the San Gabriel River Fan in Irwindale.
Sector F--Instream deposits of Eaton Wash located in the Eaton Wash Flood Control Basin.
Sector H--Instream deposits of Arroyo Seco in the Devils Gate Reservoir area.
Sector I--Hillside deposit in the Palos Verdes Hills on Narbonne Avenue in Bent Springs Canyon.
Sector J -- Hard rock deposits in the San Gabriel Mountains northeast of San Gabriel Creek in the City of Azusa.
Sector K -- Offstream deposits in the eastern portion of the San Gabriel River Fan in Irwindale.
Sector L -- Offstream deposits in the eastern portion of the San Gabriel River Fan in Irwindale.
Sector M -- Offstream and instream deposits in the western portion of the San Gabriel River Fan near Baldwin Park and Arcadia.
Six Sectors are identified for termination of designation status because of high-value incompatible land use developments.
Sector A (263 acres): There are six separate areas that are now incompatible with mining. Forty-three million tons of resources in these areas have been lost because of urbanization and 24 million tons of resources have been lost because of landfill operations.
Sector B (12 acres): There is one area that has become incompatible with mining. Eight million tons of resources have been lost to urbanization.
Sector C (42 acres): There are two areas that have become incompatible with mining. Thirty-six million tons of resources have been lost to urbanization.
Sector D (391 acres): There are eleven areas that are now incompatible with mining. Fifty-two million tons of resources have been lost to urbanization and 64 million tons of resources have been lost because of landfill operations.
Sector E (422 acres): There are six areas that have become incompatible with mining. Fourteen million tons of resources have been lost to urbanization, and 179 million tons of resources have been lost to landfill operations.
Sector I (104 acres): There are two areas that have become incompatible with mining. Fifteen million tons of resources have been lost to landfill operations.
1. New section filed 8-24-83; effective thirtieth day thereafter (Register 83, No. 35).
2. Amendment filed 10-2-2013; operative 1-1-2014 (Register 2013, No. 40).
Note: Authority cited: Sections 2790 and 2793, Public Resources Code. Reference: Sections 2726, 2761- 2763, 2790- 2791 and 2793, Public Resources Code.
