Emergency Services, Office of
(Office of Emergency Services, California)
Seismic Monitoring Station
NOE - Notice of Exemption
This new station will contribute to the CA Earthquake Early Warning System (CEEWS) designed to potentially save thousands of lives during a large earthquake, prevent critical infrastructure damage and expedite recovery following a large earthquake. The network to which this sensor is connected will contribute real-time data to accurately record and warn people of strong shaking due to earthquakes in the region, and help provide records of ground motion that would be of immense scientific, engineering and public safety value.
Under a ten-year lease with property owner, UC BSL plans to install and operate an outdoor seismic monitoring station at the Lat/Long location. Three day installation will take place in a roughly 36-sf area, to install and operate outdoor seismic monitoring station at the lat/long location noted above. One-day installation will take place n a 32 sq ft. area, to install two small structures. 1. 4' x 3' x 10" sensor vault set on a 6" concrete base, with an attached PVC pipe posthole (10" diameter) running from center of vault, to a maximum of 6' into the ground, leading to two seismometers (1 strong motion accelerometer and 1 broadband seismometer); 2. 4'x3'x6" concrete base on which a battery box, solar panel equipment, and communications equipment are housed; 3. 10' x 15' x 5' fence around site, with fence posts placed 1' deep in 4" diameter holes. A flexible conduit 1' deep and 5" wide will connect the three structures. Grounding rods will be inset next to the equipment to protect the site from lightning strikes. Holes for the vault, solar panel mount, and antenna and fence poles will be dug by a small backhoe or hand-operated auger. Access to site is entirely by existing roads and trails. There are no hazardous substances involved. If needed, a small generator (~8KW) will be used to power a hand-loaded concrete mixer and any other tools needed for the work.
5551 Giant Hwy, Richmond; Point Pinole Regional Park
Point Pinole Regional Park 5551 Giant Hwy, Richmond, CA
Dot Map ID: NS2003
Notice of Exemption
Type, Section or Code
15303; 15304; 15306
Reasons for Exemption
This project is exempt in accordance with Class 3; construction of new small weatherproof enclosures to operate seismic sensor equipment for the purpose of data collection (Class 6). In accordance with Class 4, the project described above consists of minor public or private alterations in the condition of land and/or vegetation which do not involve remmoval of healthy, mature, scenic trees.