Los Angeles, CA

LA's Oil Rigs Are Affecting Residents' Health

Olive Boneflayer

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When California Gov. Gavin Newsom announced a goal to phase out oil drilling statewide by 2045, he focused on its impact on climate change. But oil drilling is also a health problem, particularly in Los Angeles, where thousands of oil wells still dot the city.

These wells can emit toxic chemicals such as benzene and other irritants into the air, often just feet from homes, schools, and parks.

As environmental health researchers, we study the impacts of oil drilling on surrounding communities. Our research shows that people living near these urban oil operations suffer higher rates of asthma than average, as well as wheezing, eye irritation, and sore throats. In some cases, the impact on residents' lungs is worse than living beside a highway or being exposed to secondhand smoke every day.

LA was once an oil town with forests of derricks

Over a century ago, before Hollywood, the first industry to boom in Los Angeles was oil.

Oil was abundant and flowed close to the surface. In early 20th-century California, sparse laws governed mineral extraction, and rights to oil accrued to those who could pull it out of the ground first. This ushered in a period of rampant drilling, with wells and associated machinery crisscrossing the landscape. By the mid-1920s, Los Angeles was one of the largest oil-exporting regions in the world.

Oil rigs were so pervasive across the region that the Los Angeles Times described them in 1930 as "trees in a forest." Working-class communities were initially supportive of the industry because it promised jobs but later pushed back as their neighborhoods witnessed explosions and oil spills, along with longer-term damage to land, water, and human health.

Tensions over land use, extraction rights, and subsequent drops in oil prices due to overproduction eventually resulted in curbs on drilling and long-standing practice of oil companies' voluntary "self-regulation," such as noise-reduction technologies. The industry began touting these voluntary approaches to deflect governmental regulation.

Increasingly, oil companies disguised their activities with approaches such as operating inside buildings, building tall walls, and designing islands off Long Beach and other sites to blend in with the landscape. Oil drilling was hidden in plain sight.

Today there are over 20,000 active, idle, or abandoned wells spread across a county of 10 million people. About one-third of residents live less than a mile from an active well site, some right next door.

Since the 2000s, the advance of extractive technologies to access harder-to-reach deposits has led to a resurgence of oil extraction activities. As extraction in some neighborhoods has ramped up, people living in South Los Angeles and other neighborhoods in oil fields have noticed frequent odors, nosebleeds, and headaches.

Closer to urban oil drilling, poorer lung function

The City of Los Angeles currently requires no buffers or setbacks between oil extraction and homes. Approximately 75% of active oil or gas wells are located within 500 meters (1,640 feet) of "sensitive land uses," such as homes, schools, child care facilities, parks, or senior residential facilities.

Despite that proximity and over a century of oil drilling in Los Angeles, there have been few studies on how it affects residents' health. We have been working with community health workers to gauge the impact oil wells are having on residents, particularly on its historically Black and Hispanic neighborhoods.

The first step was a door-to-door survey of 813 neighbors from 203 households near wells in Las Cienegas oilfield, just south and west of downtown. We found that asthma was significantly more common among people living near South Los Angeles oil wells than among residents of Los Angeles County as a whole. Nearly half the people we spoke with, 45%, didn't know oil wells were operating nearby, and 63% didn't know how to contact local regulatory authorities to report odors or environmental hazards.

Next, we measured the lung function of 747 long-term residents, ages 10 to 85, living near two drilling sites. Poor lung capacity, measured as the amount of air a person can exhale after taking a deep breath, and lung strength, how strongly the person can exhale and are both predictors of health problems including respiratory disease, death from cardiovascular problems, and early death in general.

We found that the closer someone lived to an active or recently idle well site, the poorer that person's lung function, even after adjusting for such other risk factors as smoking, asthma, and living near a freeway. This research demonstrates a significant relationship between living near oil wells and worsened lung health.

People living up to 1,000 meters (0.6 miles) downwind of a well site showed lower lung function on average than those living farther away and upwind. The effect on their lungs' capacity and strength was similar to impacts of living near a freeway or, for women, being exposed to secondhand smoke.

Using a community monitoring network in South Los Angeles, we were able to distinguish oil-related pollution in neighborhoods near wells. We found short-term spikes of air pollutants and methane, a potent greenhouse gas, at monitors less than 500 meters, about one-third of a mile, from oil sites.

When oil production at a site stopped, we observed significant reductions in such toxins as benzene, toluene, and n-hexane in the air in adjacent neighborhoods. These chemicals are known irritants, carcinogens, and reproductive toxins. They are also associated with dizziness, headaches, fatigue, tremors, and respiratory system irritation, including difficulty breathing and, at higher levels, impaired lung function.

Vulnerable communities at risk

Many of the dozens of active oil wells in South Los Angeles are in historically Black and Hispanic communities that have been marginalized for decades. These neighborhoods are already considered among the most highly polluted, with the most vulnerable residents in the state.

But while the governor declared that "California needs to move beyond oil," his current timeline would allow oil wells to continue operating for the next two decades. A variety of policies, including buffers, phaseouts, and emissions controls, will need to be considered to protect public health and accelerate the transition to cleaner energy sources.

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