It was not part of the first storyline.
Source:https://half-life.wikia.com/wiki/Particle_Storm
I know that, twas in Raising the Bar, but it’s not part of the actual storyline thus is non canon
I know that, twas in Raising the Bar, but it’s not part of the actual storyline thus is non canon
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.