This section establishes the official geodetic datums and spatial reference system used throughout California. These are the standards for mapping and geographic information in the state.

This section defines several technical terms used throughout the chapter related to geodetic and spatial reference systems. These include various surveying reference systems and organizations, such as the National Geodetic Survey (NGS), the California Spatial Reference Center (CSRC), and key datums like NAD83 and NAVD88, which are used for mapping and positioning. It also mentions frameworks introduced in 2022 for North American and Pacific regions (NATRF2022 and PATRF2022), and includes references to GPS technology as well as international and federal committees that oversee geodetic data standards.

In California, the standard reference for pinpointing horizontal positions and ellipsoid heights (which help in identifying exact locations on Earth's surface) is set to be one of these three systems: NAD83, NATRF2022, or PATRF2022. These are specific geodetic systems used for accurate location data.

In California, all official height measurements above sea level, known as orthometric heights, should be based on either the NAVD88 datum or the NAPGD2022 datum.

This law requires that whenever certain geographical measurements like horizontal positions or heights are included in a document, the document must specify the geodetic reference system used. It should include details like the datum type, realization tag, and epoch date, mentioning if it's NAD83, NATRF2022, or any other specific system.

This law states that the California Spatial Reference Network (CSRN) is the official geodetic reference system that must be used throughout California.

This law defines the criteria for geodetic control stations in California to be part of the California Spatial Reference Network (CSRN). These stations must have positions tied to specific reference systems like NAD83 or NATRF2022 and determined by GPS. They must be published by the National Geodetic Survey (NGS) or California Spatial Reference Center (CSRC) and must meet precise accuracy standards. Additionally, they need a published or calculable horizontal velocity by these organizations.

This law specifies that geodetic control stations in California must meet certain criteria to be part of the California Spatial Reference Network (CSRN). The ellipsoid heights at these stations need to follow a few specific conditions: they must reference either NAD83 or NATRF2022, be determined through GPS survey methods, be published by either the National Geodetic Survey (NGS) or the California Spatial Reference Center (CSRC), and have a high accuracy level as defined by standard organizations.

This law section states that in California, geodetic control stations with heights measured using GPS methods must meet specific criteria to be included in the state's coordinate system network (CSRN). These heights must be based on certain reference systems, either NAD83 and NAVD88, or NATRF2022 and NAPGD2022.

They also need to be published by recognized bodies like NGS or CSRC, and achieve a high accuracy standard, within five centimeters, as defined by federal guidelines.

This section specifies the criteria for geodetic control stations in California to be included in the California Spatial Reference Network (CSRN). For their orthometric heights to qualify, they must:

(a) Be connected to the North American Vertical Datum of 1988 (NAVD88).

(b) Have their details published by either the National Geodetic Survey (NGS) or California Spatial Reference Center (CSRC).

(c) Meet a published accuracy standard of 'third order, class II' or better, according to guidelines set by the Federal Geodetic Control Subcommittee (FGCS).

This law allows individuals, companies, or government agencies the option to use specific geodetic datums and reference frames including NAD83, NATRF2022, PATRF2022, NAVD88, NAPGD2022, and CSRN, but it is not mandatory.

This law makes it clear that while certain rules apply, using other systems for measuring and referencing geodetic data, like the International Terrestrial Reference Frame (ITRF), is not prohibited.