Active burrows (not species).
680 trail construction area off Lucas Valley Road in Marin County. Biologists monitoring project may have filled in active burrows, possibly containing young, in Spring of 2011. Report of biologist indicated wildlife cam could not completely visualize burrow depth of 6' and greater. Our comment: Inadequate mitigations accepted by DFG.
Visited site with Marin County Parks Ranger to observe. Two burrowing sites - one had returned active burrowing (where 4 burrows were previously filled) with two recently dug burrows. Another site was one inactive burrowing site, side of road on hillside.