Amicus Brief of Law Scholars in Daimler v. CARB

by ridgelinecenter | Jun 9, 2026

This brief, filed in the U.S. District Court for the Eastern District of California on behalf of administrative and constitutional law scholars as amici curiae, explains why EPA’s decisions on California’s applications for waivers of preemption under Clean...

Amicus Brief of Law Scholars in California v. U.S.

by ridgelinecenter | Jan 16, 2026

This brief, filed in the U.S. District Court for the Northern District of California on behalf of administrative and constitutional law scholars as amici curiae, explains why EPA’s decisions on California’s applications for waivers of preemption under...

Comments on EPA Disapproval of California SIP Inclusion of Clean Truck Check

by ridgelinecenter | Sep 25, 2025

Comments submitted to EPA on behalf of CAELP, NRDC, and EDF opposing the agency’s proposed disapproval of California’s state plan submission including its heavy duty inspection/maintenance regulation (“Clean Truck Check”). Comments argue that...

Electrification Cost Evaluation of Class 2b and Class 3 Vehicles in 2027-2030

by ridgelinecenter | May 1, 2024

The economics strongly favor electrification of Class 2b and 3 vehicles, which include large pick-ups and vans, as well as package and delivery trucks. A typical Class 2b-3 battery electric vehicle (BEV) owner would save several thousand dollars, compared to a typical...

Lithium Mining Projects – Supply Projections

by ridgelinecenter | Jun 1, 2023

Benchmark Mineral Intelligence (BMI) identified 330 lithium mining projects as of December 2022, ranging from those that have been announced to those that are fully operating. Looking at the full supply projections of the 153 projects that were producing or had...