The record of survey filed with the county recorder of any county shall be stored in any manner that will ensure that the maps will be kept together, safe, and reproducible.
The county recorder shall keep proper indexes of such record of survey by the name of grant, tract, subdivision, or United States subdivision.
The original map shall be stored for safekeeping in a reproducible condition. It shall be proper procedure for the recorder to maintain for public reference a set of counter maps that are prints of the original maps, and the original maps to be produced for comparison upon demand.
Ca. Bus. and Prof. Code § 8770