That Seeping Feeling

The strange little building at 2659 Castro Valley Boulevard has long mystified Your Boulevardier. For a while it seemed to be a construction firm that built decks and fences of plastic, but as of late it seems to just be another un- or under-utilized business shack. (Castro Valley has many, a fact that will be documented someday when time permits.)

Yesterday on a stroll along the West End, it was noticed that the ground on either side of the building seems to be oozing water. It's not known if there's a broken pipe underground, or if the water is simply natural percolation or seepage from the hill to the site's south. But regardless of the source, it looks somewhat unsafe for the structure -- and the sidewalk, with a bit of algae building up, is becoming slippery. Below are two views of the property, from the east and west respectively.


Is there a geologist in the house? Can anyone tell what's going on here?