do you have MAP? it's possible to extract those text entities to points through a Query to Report function; I use this method often when converting Ariel Topography to TINS. perhpas this is a process you might try as well
I do have map and am not familiar with the Query to Report function. The position of the text provided is not always on the linework provided. How will extracting the text entities to points be any more accurate?
given that there are sufficient points, one can construct the original surface from them.
Process for map query report:
Attach the source file to a NEW MAP drawing
Query in the Text, either by object or layer
Change Query Type From Preview To Report
Extrat the X and y of the text objects AND the TVALUE of the Text
Execute the query
It then writes and XYZ file that you then import as a point file...
build your surface from thata data
In the case of Ariel Topo I generally work with the SPOT X's and the text adjacent to them
If you look at your data closely there might be similar Spot X's to work from as well
Also consider asking the source for the LandXML file of that surface and save everyone the grief.
*small rant here* You will need to open the report and SAVE AS to CSV from excel because autodesk broke this report file generator about 4 years ago, and it adds phantom 'HEX' data to the TXT file created even though it should be a simple asci text file