The crew start the workday at the Powell Street cable car turntable, where cars are spun around by hand for the return trip over the Fisherman's Wharf. On site, general contractor Dan Plummer has three weeks of work to show: the woodwork in the chapel has been sanded, the baptismal fount has been filled with concrete for the new fireplace's foundation, and the entire rear addition has been gutted to the walls. The reason: termites. We meet exterminator Bill Pierce as he sprays down the plywood for the new subfloor with a borate solution; the new floor joists are of a pressure-treated Douglas fir that contains no arsenic or chromium, unlike conventional PT lumber. Richard sees a blown-in cellulose insulation treatment of the floor joist bays, while our host visits a Gap store that homeowner Mark Dvorak helped to design - the simple, monochromatic finishes are meant to push the clothes forward visually, and Mark and Laurie Ann plan a similar scheme for the church to highlight their furni