The accuracy of derived COH88 values may be improved by applying a “local orthometric height correction” to the geoid height determined from the latest, applicable geoid model published by NGS.
Cal. Pub. Res. Code § 8896
California Orthometric Heights
Added by Stats. 2005, Ch. 158, Sec. 29.16
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.