Consider the following when working with project base points and survey points: 
- To ensure accuracy of the model, be sure the model geometry is less than 20 miles from the startup location of the project base point. To check this measurement: 
- Use Move to Startup Location from the context menu to move the project base point back to its startup location. 
 
- Use the Measure tool on the Modify tab to measure the distance from the project base point to the model geometry. 
 
- If the distance is more than 20 miles, move the model geometry within 20 miles of the startup location of the project base point. 
 
  
- To ensure that an imported DWG site is positioned correctly in the project: 
- Using the coordinates you received from the civil engineer, specify the coordinates of the survey point. 
 
- Specify the correct angle for True North.