California Air Regulators to Crack Down on Warehouses

Truck traffic to and from Southern California warehouses accounts for as much pollution as refineries, power plants, and other industrial polluters combined.

1 minute read

September 22, 2023, 8:00 AM PDT

By Diana Ionescu @aworkoffiction


Aerial view of large warehouses in Southern California with hills in background.

Unwind / Adobe Stock

“In 2021, the South Coast Air Quality Management District adopted a first-of-its-kind rule that requires large warehouses to offset pollution from the truck traffic they attract,” writes Tony Briscoe in the Los Angeles Times.

Since then, only 45 percent of warehouses have submitted a compliance report. “The warehouse compliance reports submitted to the air district included annual truck traffic, warehouse size and how these facilities chose to offset emissions.” Of the warehouses that submitted reports, 25 percent chose to pay mitigation fees instead of implementing any changes.

Now, regulators plan to launch a “sweeping enforcement initiative.” According to Briscoe, “Warehouses that fail to register with the agency could face financial penalties as high as $11,710 for each day they fail to come into compliance. The enforcement action will begin with warehouses operating in disadvantaged communities.”

The initiative targets the thousands of massive distribution warehouses that dot Southern California’s Inland Empire, contributing “nearly as much smog-forming emissions as refineries, power plants and other heavy polluters combined, according to air district officials.”

Wednesday, September 20, 2023 in Los Angeles Times

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

Lake Powell with much of the water evaporated.

Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River

Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.

October 30, 2026 - Yale Environment 360

The Chicago Avenue Bridge when it was open, a dark red bridge in front of downtown.

Chicago Avenue bridge construction delays enrages city leaders

The bridge has been closed since 2025. The city originally aimed to re-open it in December, and now expects to finish construction in 2027.

3 seconds ago - Block Club Chicago

People walk to a bus in Queens

NYC bus network redesign speeds up Queens buses

Rush routes have seen a 4.6% speed increase after the redesign.

1 hour ago - Mass Transit

A rendering of the California high speed rail Fresno station. Two escalators leading into the station are visible.

California High-Speed Rail Authority picks trainset manufacturer

The California High-Speed Rail Authority aims to start servicing passengers by 2033.

2 hours ago - Railway News