What significant change regarding lead regulations occurred in New Jersey on January 1, 1996?

The significant change that occurred in New Jersey on January 1, 1996, was that New Jersey became a self-authorizing state. This change allowed certified lead supervisors and contractors greater autonomy in performing lead remediation without needing additional state approvals for each project. As a self-authorizing state, professionals in the lead remediation field could streamline their processes and respond more effectively to lead hazards in residential properties. This shift aimed to improve the efficiency of lead hazard remediation and ensure that the oversight and training of professionals remained rigorous while reducing bureaucratic delays.

In the context of the other options, while certifications for lead supervisors are often updated, the introduction of new certifications specifically on that date is not the focal point of this change. Similarly, although there are strict regulations around the use of lead in buildings, a complete ban on lead from all residential properties did not occur on that date. The reclassification of lead as a hazardous material is an ongoing situation governed by various regulations, but this was not the notable change that took place in New Jersey in January 1996. The emphasis on becoming a self-authorizing state reflects a vital step in improving the management of lead exposure risks effectively.