CA Pub Res Code Section 8856

The geodetic control stations within the State of California having horizontal positions conforming to all of the following requirements shall be part of the CSRN. The horizontal positions shall:

(a)

Be referenced to NAD83.

(b)

Have been determined by GPS survey methods.

(c)

Be published by NGS or CSRC.

(d)

Have a NGS or CSRC published network accuracy of two centimeters or better as defined by FGDC or a NGS or CSRC published accuracy of first order or better as defined by FGCS.

(e)

Have a NGS or CSRC published horizontal velocity or a horizontal velocity that can be determined using procedures and values published by NGS or CSRC.