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PG&E to drill new test wells in Arizona to help monitor toxic plume by the Colorado River

Posted by: Aqua Blog Maven on May 26, 2008 at 6:42 am

From the Mohave Daily News:

In an ongoing effort to clean up a plume of contaminated groundwater near its Topock Compressor Station in California, Pacific Gas and Electric Co. will be drilling three to four new test wells along the Colorado River near Topock.

PG&E has been drilling test wells near its compressor station in California since before the plume of hexavalent chromium was discovered at a well near the Colorado River in 2004, but the new wells will mark the first time test wells have been drilled outside of California.

Under the oversight of the Arizona Department of Environmental Quality, PG&E will install monitoring wells near and beneath the river to collect samples of groundwater and sediments. The samples will be collected for chemical analysis at each site as the wells are being drilled. Once the wells are completed, groundwater samples will be collected on a regular basis and be analyzed for chromium or other contaminants.

“A couple of different wells will be installed in the course of the next couple of months on the Arizona side,” said Jon Tremayne, a spokesperson for PG&E, “To ensure that the contaminated groundwater has not moved onto that side, and has not moved under the river.”

According to the spokesman, the new wells will be able to provide specific information to help create a long-term plan that will be the most effective. The final remedy for the situation is not yet known. “All of this investigation that is taking place is to exactly identify where and what the concentrations are and how best to address them. That’s all taking place now,” Tremayne said.

Read the full text of this story from the Mohave Daily News by clicking here.

May 26, 2008 · Filed Under Environment & Water

Comments

One Response to “PG&E to drill new test wells in Arizona to help monitor toxic plume by the Colorado River”

  1. someone on May 28th, 2008 7:20 pm

    HELLO

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