Elevating Our Standards: Understanding the New Requirements in California's Public Resource Code Section 8813.1
Hello, fellow surveyors!
As professionals committed to accuracy and compliance in all aspects of land surveying, it’s essential to stay informed about changes to regulations that guide our work. I’m excited to discuss a significant update to the California Public Resource Code, specifically Section 8813.1(2), which impacts how we reference stations as part of the California Spatial Reference Network (CSRN) when establishing CCS83 values.
What Has Changed?
Up until recently, when filing maps for record that establish CCS83 values, the requirement was to reference at least one station from the CSRN. However, as of January 1, 2023, this requirement has evolved. We must now reference a minimum of two CSRN stations. This change aims to enhance the accuracy and reliability of our surveying data, ensuring that our work aligns more closely with the evolving standards of precision in our field.
Why This Matters
Often in our basis of bearing statements, many of us note that our measurements are based on GPS observations. However, it's crucial not to overlook additional requirements: inclusion of a convergence or mapping angle and a control diagram showing the connection to locally established bearings derived from CORS stations. These elements are essential for ensuring that the data we provide is both comprehensive and compliant with the statutory requirements.
The New Requirements Detailed
Moving forward, when you establish a CCS83 value on a map filed for record, ensure you include:
Reference to a Minimum of Two CSRN Stations: This enhances the robustness of our spatial referencing.
Epoch, Combination Scale Factor, and Mapping/Convergence Angle of Each Station: These details provide clarity on the temporal and spatial context of the measurements.
Local Control Held in Your Basis of Bearings: It's important to show how your work ties into broader survey networks.
Geoid Model Used to Derive Orthometric Heights: This ensures that everyone in the field works from the same vertical datum, promoting consistency and reliability.
The Bigger Picture
By adhering to these updated requirements, we aren’t just following rules—we are elevating the standards and integrity of our profession. Each step we take towards compliance is a step towards ensuring that our work stands the test of time and scrutiny, paving the way for a sustainable future in land surveying.
A Friendly Reminder
Let’s view these changes not as hurdles, but as opportunities to enhance our skill set and contribute to a legacy of excellence in surveying. Each map we file, each measurement we take, and each report we write plays a part in shaping the future of land surveying. By ensuring our compliance with the Public Resource Code, we are not only upholding the law; we are also setting an example for the next generation of surveyors.
Thank you for taking the time to read this update. Let's continue to support each other in our journey of professional growth and commitment to excellence. Remember, by being informed and compliant, we contribute significantly to the collective elevation of our profession.
Stay up-to-date and happy surveying!
