§ 27-2119. Phase-out of mercury-containing flooring. 1. Commencing a year after the calendar year in which this section takes effect, no public or nonpublic elementary or secondary school shall install a mercury-containing floor nor shall any school install a floor over a mercury-containing floor prior to removal of the mercury-containing floor. 2. The time weighted average mercury vapor exposure for an employee or student of a public or nonpublic elementary or secondary school shall not exceed 750 ng/m (3). 3. For purposes of this section:

(a) "mercury-containing floor" shall mean a floor containing phenyl-mercuric-acetate catalyst.

(b) "time weighted average" shall mean an employee's average airborne exposure in an eight-hour work shift of a forty-hour work week or for a person under the age of eighteen shall mean sixteen hours or less per week averaged over the school year.