Ivanpah Dry Lake
Encyclopedia
Ivanpah Lake is a dry lake bed in the Mojave Desert
Mojave Desert
The Mojave Desert occupies a significant portion of southeastern California and smaller parts of central California, southern Nevada, southwestern Utah and northwestern Arizona, in the United States...

 of San Bernardino County, California
San Bernardino County, California
San Bernardino County is a county in the U.S. state of California. As of the 2010 census, the population was 2,035,210, up from 1,709,434 as of the 2000 census...

 on the border of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 and Nevada
Nevada
Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

. Nestled in the Ivanpah Valley
Ivanpah Valley
The Ivanpah Valley is in southeastern California and southern Nevada in the United States. The valley is between the New York Mountains and the Ivanpah Mountains in San Bernardino County on the California side, and in Clark County on the Nevada side. The communities of Cima, California, Nipton,...

 near Primm
Primm, Nevada
Primm is a tiny community in Clark County, Nevada, United States, primarily notable for its position straddling Interstate 15 where it crosses the border between California and Nevada...

 on Interstate 15
Interstate 15
Interstate 15 is the fourth-longest north–south Interstate Highway in the United States, traveling through the states of California, Nevada, Arizona, Utah, Idaho, and Montana from San Diego to the Canadian border...

, the 13 mi2 lake is almost entirely within California. At the north edge of the lake lie the Nevada Welcome Center (closed) and a California Lottery retailer. It is a popular place for land sailing
Land sailing
Land sailing, also known as sand yachting or land yachting, is the act of moving across land in a wheeled vehicle powered by wind through the use of a sail. The term comes from analogy with sailing. Historically, land sailing was used as a mode of transportation or recreation...

 and kite buggying.

On March 26, 2009, the world land speed record for a wind-powered vehicle was set here by the Greenbird
Greenbird
The Ecotricity Greenbird is a wind-powered vehicle that broke the land speed record for the fastest wind-powered vehicle at the dry Ivanpah Lake on March 26, 2009. It was built by the British engineer Richard Jenkins...

, clocked at 126.1 mph (56.4 m/s).

Environmental contamination

Hundreds of thousands of gallons of water carrying radioactive waste spilled into and around Ivanpah Dry Lake
Ivanpah Dry Lake
Ivanpah Lake is a dry lake bed in the Mojave Desert of San Bernardino County, California on the border of California and Nevada. Nestled in the Ivanpah Valley near Primm on Interstate 15, the lake is almost entirely within California. At the north edge of the lake lie the Nevada Welcome Center ...

.

In the 1980s, the Mountain Pass rare earth mine began piping wastewater as far as 14 miles to evaporation ponds on or near Ivanpah Dry Lake, east of Interstate 15 near Nevada. This pipeline repeatedly ruptured during cleaning operations to remove mineral deposits called scale. The scale is radioactive because of the presence of thorium
Thorium
Thorium is a natural radioactive chemical element with the symbol Th and atomic number 90. It was discovered in 1828 and named after Thor, the Norse god of thunder....

 and radium
Radium
Radium is a chemical element with atomic number 88, represented by the symbol Ra. Radium is an almost pure-white alkaline earth metal, but it readily oxidizes on exposure to air, becoming black in color. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226,...

, which occur naturally in the rare earth ore. A federal investigation later found that some 60 spills—some unreported—occurred between 1984 and 1998, when the pipeline was shut down. In all, about 600000 gal of radiological and other hazardous waste flowed onto the desert floor, according to federal authorities. By the end of the 1990s, Unocal had been hit with a cleanup order and a San Bernardino County district attorney's lawsuit. The company paid more than $1.4 million in fines and settlements. After preparing a cleanup plan and completing an extensive environmental study, Unocal in 2004 won approval of a county permit that allowed the mine to operate for another 30 years. In 2008, Unocal/Chevron sold the mine to privately held Molycorp Minerals LLC, a company formed to revive the Mountain Pass Mine.

External links

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