Add Edgewood-based drayage truck operator Castan, Inc., to the budding list of businesses converting to LNG fuel.

The company, which operates in the Ports of Tacoma and Seattle, expects to be operating with 100 percent LNG trucks by the end of 2017.

The goal was set after signing a fueling contract with Clean Energy Fuels out of Newport Beach, Calif., to fuel out of its Fife station. That station — which is open to the public — consists of two LNG fast-fill pumps.