Press release
8/13/2019 - COUNTY BOOSTS OVERSIGHT CAPACTIY AT LEHIGH CEMENT PLANT AND QUARRY
Overview
The Permanente Quarry (Lehigh) is a limestone and aggregate mining operation located in the unincorporated foothills of Santa Clara County, Cupertino. The Lehigh cement plant is an authorized use operating under Use Permit No. 173.023, issued May 8, 1939. The Lehigh-Permanente quarry is a “vested mine” operation, as determined by the Board of Supervisors on February 8, 2011. A “vested mine” is a mine that was established legally within the regulations in place at that time and is allowed to continue until the use ceases. A Reclamation Plan, the document showing how the quarried lands will be restored, originally approved in 1984 and amended in 2012.