Los Angeles Times

Big Oil’s effects

Re “Manufactur­ed quakes,” April 24

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As scientists map oil industry-triggered earthquake­s in other states, California regulators are ignoring risky activity by oil companies. Undergroun­d injection of fracking flow-back and other oil wastewater can trigger damaging quakes, research shows — and oil companies in California inject almost 35 billion gallons of waste fluid a year into disposal wells.

A majority of California’s active oil industry wastewater wells are within 10 miles of an active fault, according to an analysis by my organizati­on and two other nonprofit groups. Yet state oil regulators require no seismic monitoring near injection wells, even as Gov. Jerry Brown supports an increase in fracking and other oil production methods that generate huge amounts of wastewater.

State Assemblyma­n Anthony Rendon (D-Lakewood) recently introduced AB 1490, a bill that would prohibit wastewater injection and fracking near active faults. That’s a sensible step toward protecting California from the risk of oil industry-triggered quakes.

Shaye Wolf San Francisco The writer is climate science director at the Center for Biological Diversity.

How can people read about man-made earthquake­s in Texas and Oklahoma and not shake their heads in wonder? How can an industry have so much power that it can literally shake up people’s lives with impunity, forcing homeowners to buy insurance to protect themselves from financial ruin at prices inflated by the industry’s hazardous activities?

This is insanity, especially if one considers that alternativ­es to fossil fuels are there to be developed.

It’s time to steer our fossil-fuel economy toward renewables by putting a price on carbon.

Daniel Weiser Rancho Cucamonga

 ?? Sue Ogrocki Associated Press ?? DAMAGE at St. Gregory’s University in Shawnee, Okla., is inspected after a magnitude 5 earthquake.
Sue Ogrocki Associated Press DAMAGE at St. Gregory’s University in Shawnee, Okla., is inspected after a magnitude 5 earthquake.

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