SMGB Designation Report No. 12 STATE MINING AND GEOLOGY BOARD Updated Designation of Regionally Significant Aggregate Resources In the San Gabriel Valley Production-Consumption Region, Los Angeles County Department of Conservation Natural Resources Agency April 2014 This Designation Report No. 12 by the State Mining and Geology Board was prepared with assistance from the California Department of Conservation California Geological Survey Cover: Portion of City of Irwindale showing several active open pit surface mining operations and surrounding development. (Courtesy of Google Maps, 2015). STATE MINING AND GEOLOGY BOARD MEMBERS OF THE BOARD Ignacio Gonzalez, Chairman Jelisaveta Gavric, Vice Chairman George Kenline John Lane Nikki Noushkam Stephen M. Testa, Executive Officer State Mining and Geology Board 801 K Street, MS 20-15 Sacramento, California 95814-3528 Telephone: (916) 322-1082 Facsimile: (916) 445-0738
[email protected] http://conservation.ca.gov/smgb STATE OF CALIFORNIA EDMUND G. BROWN JR. GOVERNOR NATURAL RESOURCES AGENCY DEPARTMENT OF CONSERVATION JOHN LAIRD MARK NECHODOM SECRETARY FOR RESOURCES DIRECTOR Updated Designation of Regionally Significant Aggregate Resources In the San Gabriel Valley Production-Consumption Region, Los Angeles County ________________________________________________________ TABLE OF CONTENTS EXECUTIVE SUMMARY ....................................................................................................................... 1 INTRODUCTION ..................................................................................................................................