Air regulators today (and really any of us who work on keeping the air clean) face big challenges. But they also have enormous opportunities. At @legal-planet.org, our Brennon Mendez discusses the huge potential of Indirect Source Rules (ISRs). - ThreadSky

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uclalawemmett.bsky.social • 13 days ago

Air regulators today (and really any of us who work on keeping the air clean) face big challenges. But they also have enormous opportunities. At @legal-planet.org, our Brennon Mendez discusses the huge potential of Indirect Source Rules (ISRs).

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uclalawemmett.bsky.social•13 days ago

ISRs are robust but underutilized regulations that can reduce the indirect air pollution spewed around big facilities like warehouses, logistics centers, or ports. Think tailpipe fumes coming from big rigs or the emissions created by other equipment.

uclalawemmett.bsky.social•13 days ago

We researched how ISRs have been drafted, passed, and implemented by air districts, and took a hard look at whether there were legal reasons why communities around the country haven’t yet adopted them. But honestly...

uclalawemmett.bsky.social•13 days ago

We didn't find any reasons. What we found is that ISRs are legally sound tools that air districts and states could adopt, well, swiftly.

uclalawemmett.bsky.social•13 days ago

In 2005, regulators in the San Joaquin Valley — an area hardly known for spearheading progressive environmental policies — became the first air agency in the nation to adopt a comprehensive ISR. It has been credited with avoiding tens of thousands of tons of NOx & PM10 emissions since its adoption.

uclalawemmett.bsky.social•13 days ago

In 2021, South Coast adopted an ISR that aims to reduce smog-forming emissions by 10-15 % from warehouse-related sources. Critics speculated the ISR might harm industry if adopted and lead to warehouse closures... over the last 10 years, the total inventory of warehousing space increased by 41%. Wow

uclalawemmett.bsky.social•13 days ago

In summary: We predict that you’re going to hear a lot more about ISRs very soon. Read more from Brennon Mendez and Cara Horowitz at @legal-planet.org https://legal-planet.org/2025/04/24/unsheathing-a-weapon-for-clean-air-isrs/

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