I recently submitted some coordinates I acquired via ArcGIS to the BLM to go out into the field and pinpoint some locations.
When I did the work at the computer I used ArcGIS and leveraged the BLM's CadNSDI dataset to pinpoint PLSS section lines. When I heard back from the BLM, they claimed that my points were not accurate to footage calls in the field.
I started doing some digging and realized that there are two standards utilized by the BLM for PLSS data. These two datasets are the CadNSDI(which I used) and the GCDB, which based on the information at the following link, seems to be an older standard:
Why do these two datasets not line up, and which one is more accurate for comparing footage calls from section lines in the field?
Both of the datasets are in NAD83 but do not line up with errors in the range of 20 feet(I am projecting into a State Plane projection). I can't seem to wrap my head around what is happening here. From my perspective it seems like the BLM serves out two datasets that don't line up and then when you submit coordinates to them they say they are inaccurate when using the newer standard.