Western Railroad Discussion > Help ID UP RCO Job in Seattle

Yesterday afternoon, around 5PM, I was on my way to SEA TAC along the part of Marginal Way that has traffic lights. A Union Pacific RCO job was working to our right. I pulled off and grabbed some shots (neat stuff, I will share soon, as it was essentially working the parking lot of a business). This was close to Argo Yard.

Can anyone tell me what symbol this job would have had? Also, does it have a name? LIke 3PM West Side Industry Switch, or whatever?

Finally, does that line along Marginal Way there have a name? Is is an industrial lead or a spur?

Thank you in advance for any help.