Jon Rohrer, PG, CHg

Hydrogeologist, Tweets = Mine; RT's ≠ Endorsements

[Jon Rohrer, PG, CHg @CalHGeol]

Great time discussing careers in #Hydrogeology with the awesome inaugural one year Masters students at @HAS_UArizona in the @UAZScience College guided by the best in Dr. Ty Ferre. Thanks for the inspiring opportunity.

[Jon Rohrer, PG, CHg @CalHGeol]

Stunning So. Cal. hydrologically-promising views for excellent American Ground Water Trust and AGWA 2026-CA #groundwater conference, where @RouxAssociates is a proud sponsor and supporter.

[Roux @RouxAssociates]

Roux is a proud sponsor of the @ABALitigation 2025 Environmental & Energy Enforcement Updates CLE Program. This program will feature an update on the top environmental and energy litigation cases making their way through the courts. Learn more & register:

https://t.co/zv8V2LWVeG

[Jon Rohrer, PG, CHg @CalHGeol]

This is an excellent event and great way to learn about the constantly evolving Federal environmental landscape. @RouxAssociates is a proud sponsor and supporter of the committee. https://t.co/BLANyJBYz0

[ABA Litigation Section @ABALitigation]

Attention, DC litigators! Don’t miss our 2025 Federal Environmental & Energy Enforcement Updates Regional CLE Program on September 11. Special rates available for judges, academics, and government and public service attorneys. Register at https://t.co/9fhFt5SjZX!

[ABA Litigation Section @ABALitigation]

Attention, DC litigators! Don’t miss our 2025 Federal Environmental & Energy Enforcement Updates Regional CLE Program on September 11. Special rates available for judges, academics, and government and public service attorneys. Register at https://t.co/9fhFt5SjZX!

[Jon Rohrer, PG, CHg @CalHGeol]

Could not help thinking about missing @tmeixner, when at @USGSAZ, #LeesFerry gage. #LiveLikeTom, best stream gage ever!

[Jon Rohrer, PG, CHg @CalHGeol]

Looking forward to this session on #EmergingContaminants at #calcupa2025, with @HoganLovells Olivia Molodanof, T. Austin and @CaliforniaDTSC's C. Powell.

[Roux @RouxAssociates]

On March 27, Roux’s Jon Rohrer will present on Emerging Contaminants as part of the @CALCUPA 27th Annual Training Conference. This panel discussion looks beyond PFAS at some other emerging contaminants, posed risks, and legal and regulatory developments.

https://t.co/EFeaVXNh5e

[Jon Rohrer, PG, CHg @CalHGeol]

Excellent @GRAofCalifornia Central Coast field-trip hosted by @UnitedWaterCD and thanks to @poseidonbrewing for post-field trip meeting space and to CCoast-GRA Officers for organizing.

[Roux @RouxAssociates]

Roux is working on behalf of Los Angeles County to evaluate soils throughout the Eaton and Palisades fire areas. Tonight, Roux's Adam Love, PhD is participating in the LA County Post-Fire Air, Soil, and Water Assessment Plan Virtual Town Hall at 6pm PST.

https://t.co/dJzUKaAujm

[Jon Rohrer, PG, CHg @CalHGeol]

Thank you to #SCCWRP, @DrLeahTH and #SWRCB for #Microplastics sampling update. @UofT shared their recommended sampling train and protocols, but still only two CA-ELAP certified labs & refinement of protocols ongoing before Phase I DDW sample collection can begin.

[Jon Rohrer, PG, CHg @CalHGeol]

Excellent morning of presentations on Airport environmental challenges at
@SWAAAE's Airport Management Short Course including #PFAS and discussions over lunch with @REGENESISEnviro about pilot testing remediation approaches.

[Jon Rohrer, PG, CHg @CalHGeol]

Looking forward to speaking @SWAAAE's Airport Management Short Course about #PFAS and lessons learned; discuss litigation to date and non-Airport PFAS sources.

[Jon Rohrer, PG, CHg @CalHGeol]

Beautiful start to Day 3 of Ski and CLE at @ABALitigation's #LitigationJoint conference, with great presentations today on Product liability and environmental emerging contaminants, featuring @RouxAssociates C. Boston MPH.

[Jon Rohrer, PG, CHg @CalHGeol]

Chilly but compelling start to Day 2 of @ABALitigation #LitigationJoint. Great ethics panel on AI by @SHBLaw's esteemed JBarkett, JZaleski & others; Insights into potential new Federal leanings by @HuntonAK's M.Leopold et. al. @RouxAssociates is a proud sponsor and supporter.

[Jon Rohrer, PG, CHg @CalHGeol]

Great start to Day 1 of @ABALitigation #LitigationJoint Conference @AspenSnowmass. Strong networking and discussion of litigation financing.

[Jon Rohrer, PG, CHg @CalHGeol]

@clhubes

[Jon Rohrer, PG, CHg @CalHGeol]

Thousands of families need assistance coming out of the #lafires . One way you can contribute is by donating to help one of our great senior staff and his family who lost their home. Please consider supporting them as they work to recover. https://t.co/HyPJo8XTIm

[Jon Rohrer, PG, CHg @CalHGeol]

Thousands of families need assistance coming out of the #lafires . One way you can contribute is by donating to help one of our great senior staff and his family who lost their home. Please consider supporting them as they work to recover. https://t.co/HyPJo8XTIm

[Jon Rohrer, PG, CHg @CalHGeol]

Excellent start to 2025 with this great Joint Regional CLE @AspenSnowmass with #ABALitEnvEnergy. @RouxAssociates is a proud sponsor. Strong CLE Content and Networking.

[ABA Litigation Section @ABALitigation]

Join us for the 2025 Joint Regional CLE Program. This program has eight programs, networking opportunities, and time to enjoy the mountain! Secure your spot now: https://t.co/AQGsG4qfu6.

[GRA of California @GRAofCalifornia]

🎳 Join the Southern California Branch for Holiday Bowling & Fundraiser on Tuesday, December 10, 2024, from 6:30 to 8:30 pm, at Cal Bowl in Lakewood! 🎳
Don’t miss this chance to bowl, bond, and contribute as we celebrate this fantastic year! 🎉
https://t.co/idIGn1LQgk

[Jon Rohrer, PG, CHg @CalHGeol]

@RouxAssociates is a proud sponsor and supporter of this excellent #LitigationJoint conference at @AspenSnowmass

[ABA Litigation Section @ABALitigation]

Join us for the Environmental & Energy, Mass Torts, and Products Liability Litigation Committees’ Joint Regional CLE Program in Colorado! Register now: https://t.co/d4SbmleRqM