Geologic Hazards

Geologic Hazards

Soledad Mountain Road Landslide Update

October 7, 2007 rockman Comments Off on Soledad Mountain Road Landslide Update

Residents of approximately 75 of the 111 homes evacuated after the slide have been allowed back into their homes.  The City of San Diego is not wasting any time in determining the cause of the slide. The first of three 100-ft deep exploration shafts was excavated on Friday, and a Forensic Geologist from a firm hired by the City was sent down the hole to observe geology conditions and to locate the actual slip surface. Also, claims of leaking City water and/or sewer pipes prior to the failure have begun to surface. More details in the full post. (Photo by NELVIN CEPEDA / San Diego Union-Tribune)

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Geologic Hazards

Landslide Occurs in Residential La Jolla California

October 4, 2007 rockman Comments Off on Landslide Occurs in Residential La Jolla California

A landslide occured about 9am PT yesterday in a residential neighborhood of La Jolla, just north of San Diego. No injuries have been reported, but estimates are that 2,500 people are without either power or gas because of toppled power lines and ruptured gas lines. The Soledad Mountain Road is currently impassable. I’ll update this post as more information becomes available. In the mean time, check out some video and a  location map after the break.

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Geologic Hazards

Utah Geologic Hazards Group Finishes Report

September 28, 2007 rockman Comments Off on Utah Geologic Hazards Group Finishes Report

As we mentioned in a previous post, the State of Utah had experienced several slope failures in approved, permitted subdivisions. Those failures prompted the governor to form the Geologic Hazards Working Group (GHWG) to evaluate […]

Geologic Hazards

Devil’s Slide Tunnel Construction Kicks Off

September 19, 2007 rockman 1

On September 17, CALTRANS and Kiewit Pacific held a "tunnel excavation celebration" to kick off the start of tunnel construction on The Devil’s Slide Tunnels project on California State Route 1 (the Pacific Coast Highway) in San Mateo County between the town of Montara to the south and the city of Pacifica to the north. The project involves the creation of a separated two-lane road, one lane in each direction. This road will pass through twin tunnels, over twin bridges and connect with an existing non-separated two-lane road at each end. The new road will be approximately 6,500 feet long, made up of the roughly 4,000-foot twin tunnels, the 1,500-foot north approach road (which includes the 1000-foot parallel bridges), and the 1,000-foot south approach road. Upon completion, the new road will bypass geologically unstable portions of existing Route 1, sections of roadway subject to lengthy closures, high maintenance costs over the years, and risk of permanent failure. Thanks Geology.com for the heads up. [Read on for more background, photos, maps, and movies!] (Images by CALTRANS)

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Geologic Hazards

DBM Completes Landslide Repair in Oceanside

September 18, 2007 rockman Comments Off on DBM Completes Landslide Repair in Oceanside

Oceanside, Calif.— DBM Contractors, Inc. performed emergency landslide repair for the Sprinter Mainline in the city of Oceanside. The slide occurred during earth moving to build a retaining wall at the base of a steep […]

Geologic Hazards

Japan Quake Kills 9, Effects Nuclear Plant

July 19, 2007 rockman Comments Off on Japan Quake Kills 9, Effects Nuclear Plant

A magnitude 6.8 earthquake struck Japan on 7/16/07, killing 9 and injuring more than 150. The hardest hit areas were near the town of Kashiwazaki, northwest of Tokyo. It triggered mudslides in the town that was already effected by a Typhoon several days before. One of the most newsworthy things about this earthquake is the damage to and minor leakage of radioactive waste and coolant from the world’s largest nuclear power plant in Kashiwazaki. Read on for links and video. (Photo by Kazuhiro Nogi, AFP – Getty Images)

 

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Geologic Hazards

Arizona Earth Fissure Planning Maps

July 11, 2007 rockman Comments Off on Arizona Earth Fissure Planning Maps

According to Lee Allison’s Blog (Lee is the head of the Arizona Geological Survey and the Arizona State Geologist), the AZGS has released earth fissure maps of 4 Arizona Counties suitable for planning purposes. Read on for more details.

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