Texture Of The Water Light Effect

Im creating a map to do with the aquatic side of Black Mesa and I am having trouble finding the texture found in one of the Surface Tension levels it is within the new c2a5g but whenever I locate the map file it will give me the older version, I also checked the map_dir files and it doesnt seem to be there.

Just decompile the map:
https://www.therazzerapp.de/tools/bspsource.html

I already have as I said it is the older map in both the dir and mapsr

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valveā€™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.