Found a bunch myself along Dillon Road. I also found some really early-flying Pheidole that I usually find around March. Both last year and 2015 I only managed to find one, but this time I got six, so maybe I'll have better luck starting a colony of them. I might be going back out there again today with nurbs.
Met up with Drew in Pomona today and we carpooled there. Parked my truck on the side of Dillon road a tad bit east of Sky Valley. We were able to collect a handful of Veromessors. The chambers were harder to spot, and it was about a 1 out of 10 in finding a queen on a dig. A little frustrating, but not a bad trip. Just lots of work and digging! Glad I was able to come back with something.
As usual Drew found more than me - think he also came back with another Pheidole.