john chokatos/nats- "i just need three." john chokatos (chuh-kah-toes) prefers traditional sandbags.nats- he lives in orinda, but rushed to rancho laguna park in moraga friday -- to pack as much free sand as possible -- offered by the town of moraga. the rain concerns him. the wind -- even more.john chokatos/lives in orinda- "the trees come down -- especially around the golf course, and there's no way to predict where they're going to come down, or how they're going to come down. one -- my nextdoor neighbor had one just come down, and he's a minister, and i think he had a way with the lord, because the tree fell right in his backyard -- couldn't have been placed any better, but still it cost him seven thousand dollars to get it out." by the time saturday morning rolled around -- all of the sand at the park was gone. walnut creek homeowners, who live in low lying areas -- blocking garages and driveways from potential flooding. in livermore -- the public works department -- focusing it's attention on waterways t