The survey instrument was a modified version of the classification of NICU levels used by the Vermont Oxford Network. The classification consisted of basic care (level I), specialty care (level II), and subspecialty intensive care (level III) (Table 1).
1 1) Performs any of following duties to assist in surveying land: Holds level or stadia rod at designated points to assist in determining elevations and laying out stakes for mapmaking, construction, mining, land, and other surveys. 2  2) Calls out reading or writes station number and reading in notebook.
May clean and prepare sites, dig trenches, set braces to support the sides of excavations, erect scaffolding, and clean up rubble, debris and other waste materials. May assist other craft workers. Construction laborers who primarily assist a particular craft worker are classified under Helpers, Construction Trades (47-3010).