Message for NC RTN users!
March 30, 2012 1:47 PM
Access to the old RTN (referenced to NAD83(NSRS2007) will end on the evening of April 4, 2012.
If users have not received a new RTN access information email, contact Bart Alligood at email@example.com
for further directions.
Although NGS has published the new multi-year CORS solution, they are still in the process of adjusting the passive marks to NAD 83(2011).
Until the new geoid is released, we recommend localizing to NAVD 88 bench marks when using NAD 83(2011) ellipsoid heights with the current geoid, GEOID09, because GEOID09 was developed to work with NAD 83(NSRS2007).