California Public Resources Code Section 8805

Zone 3 coordinates shall be named, and, on any map on which they are used, they shall be designated as CCS27, Zone 3 or CCS83, Zone 3. On their respective spheroids of reference: (1) the standard parallels of CCS27, Zone 3 and CCS83, Zone 3 are at north latitudes 37 degrees 04 minutes and 38 degrees 26 minutes, along which parallels the scale shall be exact; and (2) the point of control of coordinates is at the intersection of the zone`s central meridian, which is at 120 degrees 30 minutes west longitude, with the parallel 36 degrees 30 minutes north latitude.