Seismic Monitoring Station - Frink
Summary
SCH Number
2018098112
Public Agency
California Governor's Office of Emergency Services
(OES)
Document Title
Seismic Monitoring Station - Frink
Document Type
NOE - Notice of Exemption
Received
Posted
9/6/2018
Document Description
This upgraded station will contribute to the CA Earthquake Early Warning system 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.
Caltech/USGS plan to renovate and operate an outdoor seismic monitoring station at the lat/long location noted above. One-day installation will take place in a 32 sq. ft area, to install three small structures and a fence: 1. 3'x3'x10" 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 a seismometer; 2. 4'x4'x6" concrete base on which a battery box, solar panel equipment, and communications equipment are housed; 3. Antenna mounted on a 2'- diameter pole supported by a 4'-deep concrete base; and 4. 10'x15'x5' 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 (~8 KW) will be used to power a hand-loaded concrete mixer and any other tools needed for the work.
Contact Information
Name
Ryan Arba
Agency Name
Office of Emergency Services, California
Contact Types
Lead/Public Agency
Phone
Email
Location
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15302, 15304, 15306
Reasons for Exemption
This project is exempt in accordance with Class 2 as described above; 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 removal of healthy, mature, scenic trees. None of the exceptions to a notice of exemption apply.
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