The Smell of Sulfur Suffocating Southern California

If the year 2012 is about the apocalypse, then California just might be ground zero.

This year, California has not only had a significant increase in earthquake activity, but it has had massive animal die offs from fish to birds, wild fires, and the sudden strange appearances of smoldering geysers and mud holes.  Also most state rivers are reporting of water levels dropping off and/or a change their colors.  But this Monday, Southern California woke up to the smell of sulfur in the air.

Residents clogged 911 lines with calls, prompting health officials from Ventura County to Palm Springs to send investigators looking for everything from a toxic spill to a sewer plant leak.

The prime suspect, however, lay more than 100 miles away from Los Angeles. The leading theory is that the stink was caused by the die-off of fish in the Salton Sea. Officials believe Sunday evening’s thunderstorms and strong winds churned up the water and pushed that dead-fish smell to points west overnight.

Officials from the Air Quality Management District and other agencies said they have never dealt with a stench quite like this. Although the fish die-off usually causes foul odors in parts of the Inland Empire, officials cannot recall it traveling this far.

“It’s very unusual that any odor would be this widespread, from the Coachella to Los Angeles County,” said Sam Atwood, spokesman for the South Coast Air Quality Management District. “We’re talking well over 100 miles. I can’t recall ever confirming an odor traveling that distance.”

“The winds could have stirred up the water,” said Bill Meister, president of the Sea and Desert Interpretive Assn. “Because the lake is so shallow, and there is 100 years worth of decayed material at the bottom, you’d get that rotten egg smell.”

At its deepest points, the Salton Sea is only about 50 feet, said Andrew Schlange, general manager of the Salton Sea Authority. The 360-square-mile body of murky, highly saline water is also receding into the desert. More water is evaporating from the sea than is flowing in from agricultural runoff. In some places the falling waterline has uncovered thermal fields studded with features like geysers and boiling mud pots spewing clouds of steam and sulfur dioxide gas that smells like rotten eggs.

The “accidental sea” was created in 1905 when the Colorado River jumped its banks during a rainy season and gushed north for months, filling an ancient salt sink. Its 35 miles long, 15 miles wide and 227 feet below sea level.

“The problem is the odor would have to have migrated 50 to 100 miles, without it being dissipated by mixing with other air. It doesn’t seem possible,” he said. “I’ve been in Southern California my whole life, and I’m not aware of any time in the past where the odor from the Salton Sea has migrated as far as people are telling us.”

Schlange said several factors could explain the far-traveling smell. In the last week, the blistering heat reduced oxygen levels in parts of the Salton Sea, causing fish to die and settle to the bottom, where they decomposed with other organic material.

Then a thunderstorm barreled through the area Sunday night, churning moisture-laden air counterclockwise and pushing it from the southeast.

Whatever its provenance, the stench made the rounds.

It is unclear why some parts of Southern California smelled the odor more than others. Reports of the smell appeared greatest across the Inland Empire as well as the San Gabriel, San Fernando and Santa Clarita valleys and Ventura County.

“We got enough public reaction that, in an abundance of caution, we sent our hazardous-material team to monitor the atmospheric conditions,” Ventura County Fire Department spokesman Bill Nash said. “They reported that all levels were normal.”

Tim Krantz, a professor of environmental studies at the University of Redlands, said that as the Salton Sea’s water level declines, the most smelly water is slowly moving from the bottom closer to the surface. He believes the strong southeasterly storm and heavy winds Sunday pulled the fresher surface layer off the sea and replaced it with the more fetid water at the bottom.

“The magnitude of the odor is a factor of how long it’s been since it was stirred up,” he said. “Apparently it’s been a while, because it was pretty rank when I got up in the morning.”

Still, some experts can’t believe the stink journeyed such long distances.

“Could it have traveled as far away as the upper reaches of the San Fernando Valley?” the AQMD’s Atwood said. “That’s just a long, long way for odor to travel.”

Source: LA Times