Busbar Electricity Prices at the Tehachapi Wind Farm This Evening.

[Tom Rinaldo]

16. Interesting that you don't mention the Hosgri and Shoreline earthquake faults

since you like talking about the Diablo Canyon Nuclear Plant so much.When construction began on Diablo Canyon those fault lines weren't known to the public although internal PG&E documents seem to indicate that the firm knew more about those risks than the regulators did at that time

Since you like to quote Wiki, here is some basic information from that site about those faults and their proximity to the Diablo Canyon Nuclear Power Plant:

"The Hosgri Fault is a component of the San Andreas Fault system.[3] Its movement is primarily reverse thrust, as well as exhibiting right lateral slip, and is thought to be capable of generating earthquakes of up to magnitude 7.5.[1] The November 4, 1927 Lompoc earthquake (magnitude 7.1) is thought to have occurred (uncertainty) on this fault.[4]...

Seismologists monitor activity on the Hosgri fault constantly because of its physical proximity to the nuclear Diablo Canyon Power Plant. In fact, the fault lies only 2½ miles offshore from the nuclear power plant.[5] More recently in 2008, yet another even closer fault was discovered, the Shoreline Fault 1 mile from the NPP."
https://en.wikipedia.org/wiki/Hosgri_Fault

Here is part of a more detailed scientific study:

"Seismicity of the Shoreline and Hosgri Faults, Estero Bay, and Irish Hills"

"...Composite focal mechanism shows that the northernmost Shoreline Fault events are aligned with the Shoreline Fault, not the Hosgri Fault. Implies that the Shoreline Fault does extend to the Hosgri at seismogenic depths.

Given the apparent connection - and definite close proximity - of the Shoreline and Hosgri faults, it does not seem prudent to rule out a joint rupture.

o No reason a north-going earthquake on the Shoreline Fault couldn’t make the slight (~30°) bend and continue onto the Hosgri Fault.

o No reason an earthquake couldn’t nucleate at the junction and propagate bilaterally onto both faults"
https://www.pge.com/includes/docs/pdfs/shared/edusafety/systemworks/dcpp/SSHAC/workshops/ws2/SSHAC3_WS2_Day01_09_Hardebeck.pdf

And this from another study:

"Bulletin of the Seismological Society of America:
Geometry and Earthquake Potential of the Shoreline Fault, Central California

"...The OADC results show that the Shoreline fault is a single continuous structure that connects to the Hosgri fault. Discontinuities smaller than about 1 km may be undetected, but would be too small to be barriers to earthquake rupture. The Hosgri fault dips steeply to the east, while the Shoreline fault is essentially vertical, so the Hosgri fault dips towards and under the Shoreline fault as the two faults approach their intersection. The focal mechanisms generally agree with pure right‐lateral strike‐slip on the OADC planes, but suggest a non‐planar Hosgri fault or another structure underlying the northern Shoreline fault. The Shoreline fault most likely transfers strike‐slip motion between the Hosgri fault and other faults of the Pacific–North America plate boundary system to the east. A hypothetical earthquake rupturing the entire known length of the Shoreline fault would have a moment magnitude of 6.4–6.8. A hypothetical earthquake rupturing the Shoreline fault and the section of the Hosgri fault north of the Hosgri–Shoreline junction would have a moment magnitude of 7.2–7.5."
https://pubs.geoscienceworld.org/ssa/bssa/article-abstract/103/1/447/331609/Geometry-and-Earthquake-Potential-of-the-Shoreline?redirectedFrom=fulltext