Hey Pete,If I were you,I'd stay put on the Hill & Observe from above,also If we have "The Big One",Liquefaction is Going to be a Major Concern,Especially on The Hills of Baldwin Hills/Westchester/ Manhattan/Redondo/Palos Verdes.I would attempt to research the areas where,there are Oil Derricks/Rigs,As they are basically probes as well as Vents,& The possibility is there for Early Warning of Liquefaction Activity!If there is liquefaction activity below the Hills,Then in theory the hills can slide as their support base is/has shifted.Wave to me,I'm down there somewhere probably floating around on My Surfboard!:)