This site is located at the 101/280 freeway interchange in San Jose at  37.3393, -121.8520 (approx 31m elevation). A single Granite unit records a surface Episensor and three downhole Hyposensors at 17, 42 and 91m. UCSB assisted in the downhole installations on 3/2/16. The deep hyposensor had a compass and was glass beaded in at 347.2o magnetic, within 1 degree of true-North, and the other two hyposensors were installed with loading-poles, rotated and aligned to true-North.



​The UCSB Geotechnical Array monitoring program is jointly funded by Pacific Gas & Electric Company and the United States Geological Survey.

This site previously funded 2015 to 2017 by the NRC Contract#NRC-HQ-60-15-C-000, project title "Observations and Analysis of Geotechnical Data". And 2004 to 2014 by the Geoge E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Earthquake Hazards Reduction Program (NEHRP) of the National Science Foundation (NSF) under Award# CMMI-0927178.