Houston, Texas. February 9, 2026 — HWCG, LLC announced today that they have contracted

WellCTRL® Engineering to deliver integrated oil spill and hazardous environmental modelling

designed to protect people, property, and the environment.

As part of this agreement, WellCTRL® will apply PARSim® (Plume & Atmospheric Release

Simulator) an advanced, dynamic, compositional fully integrated 3D modelling platform capable

of simulating the complete subsea-to-atmosphere release continuum. PARSim® supports

realistic modelling of complex offshore scenarios, including blowouts and accidental releases,

with time-varying release rates and evolving source conditions.

PARSim® combines regulator-recognized scientific methods into one unified simulation

framework, integrating:

• Near-field subsea plume behavior

• Far-field transport and spill trajectory

• Oil weathering and fate

• Vapor and atmospheric dispersion, including VOC tracking and LEL exceedance /

exclusion zone definition

This integrated capability helps improve planning, consequence evaluation, and response

decision-making, supporting both emergency response operations and regulatory-aligned

preparedness. Integration of WellCTRL® as one of HWCG’s Response Providers is extremely

important for sustaining a quick and comprehensive response that accomplishes the missions

stated in 40 CFR § 300.317 — National Response Priorities which prioritize worker safety 1 st

and stopping the flow of oil into the environment 2 nd

“At HWCG, protecting life, property, and the environment is always the priority,”

said Craig T. Castille, Managing Director of HWCG, LLC.

“By partnering with WellCTRL and leveraging PARSim®, we’re strengthening our ability to

evaluate high-consequence scenarios with speed, technical rigor, and operational relevance.”

Amir Paknejad, Managing Director at WellCTRL® Engineering, adds:

“We’re proud to support HWCG by providing its members with integrated modelling that

connects subsea plume dynamics to surface spill behavior and atmospheric dispersion.

PARSim® delivers technically defensible outputs that help clients plan, respond, and protect

what matters most.”

About HWCG, LLC

HWCG, LLC supports operational readiness and emergency response preparedness for its

members through agreements with Response Providers for specialized equipment and

personnel resources which are focused on protecting people, property, and the environment.

About WellCTRL®

WellCTRL provides emergency response, advanced well control engineering support, integrated

modelling and technical decision-support for oil spill, hazardous environmental release, and

atmospheric dispersion scenarios—supporting response planning, risk assessment, and

operational execution.

Accounts to be linked

HWCG: https://www.linkedin.com/company/hwcg-llc

Craig Castille: https://www.linkedin.com/in/craig-castille-118b703b/

WellCTRL Engineering LinkedIn: https://www.linkedin.com/company/wellctrl%C2%AE-

engineering/

Amir Paknejad:  https://www.linkedin.com/in/amir-paknejad-ph-d-p-e-4928ba116/

Website: www.WellCTRLeng.com