wow, 10 minutes later, another short train powered by older power (a tunnel motor still in SP paint and an sd50). mainly empty 15-20 flat beds with some having what looked like construction equipment.
Often if the train has come down the coastline, it may have a set out at Gemco Yard. If it came down via the old Saugas Line, like the old SP PTLAF train it would have made a set out at the coast siding. Otherwise, I’m not sure.
Most likely you saw the QRVML and QRVDO…they tend to have very short makeups after their set out to Gemco Yard in Van Nuys.
UP started sending loads to Gemco down the Coast from Roseville, rather than trying to stick them on the frequently overloaded/underpowered QRVWC trains that go through Tehachapi.
Usually, you can tell the trains apart…if there are tank cars, it is the QRVDO heading to Dolores Yard. If there are no tank cars, but some lumber loads, then it usually is the QRVML.
There was a Coast work train a couple weeks ago, not sure if that is what you saw.