Section 8815.2.

Cal. Public Resources Code - PRC § 8815.2.
in effect
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The epoch for a survey using CCS83 coordinates shall be the published NGS or CSRC datum realization and epoch date of a published coordinate for a controlling station used for that survey. These surveys performed after December 31, 1999, shall be based on the “NAD83 (1992) epoch 1991.35” datum realization and epoch or a subsequent published NGS or CSRC datum realization and epoch.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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