For the purposes of section 3 of this act, if the department finds that there are a sufficient number of laboratories to conduct the short term 48-hour gross alpha test to screen for the presence of radium only within a limited area in the State, as determined by the department, and which laboratories are able to provide results at a reasonable cost within 10 days of a request for testing, then the test shall be required only within that limited area until such time as the department finds that there are a sufficient number of laboratories to provide service elsewhere in the State.
N.J.S. § 58:12A-29