Tank cars in Santa Clara

There is a cardboard box plant in Santa Clara. It is located on the mainline from Newark and is located just before the old Santa Clara yard where the San Francisco peninsula line cuts off. It is sort of just north of the San Jose airport. There is a spur track there loaded with tank cars and a track that goes into the plants yard. It looks like they bring one or two tank cars in at a time. What is brought to that plant in taank cars? or what are they shippiing out of the plant in tank cars? It did not appear to be any type of fuel.

Adhesives, for the corrugated part?

Get a reporting mark and number off one of the tank cars, please–it will help!

It appears it is or was a Smurfit-Stone recycling plant, although they do not list it.

http://www.baaqmd.gov/pmt/title_v/permits/A0732C.pdf