During February the Department visited and checked 59 sites across NSW to make sure companies were sticking to the rules.

A spokesperson from the Department said the compliance team works with communities to make sure projects such as mines, industrial sites, major developments and infrastructure are meeting their conditions of approval.

“The Department is now considering the information gained during February site inspections to determine if there’s any need for enforcement action,” a spokesperson said.

“The Department continues to monitor these sites and will be watching how each of the quarry operators will implement an action plan to address any instances of non-compliance.”

The Department can issue the highest on-the-spot fines in the country for breaches of conditions.

Companies can also be prosecuted in court for breaching conditions, with the most severe breaches attracting fines of up to $5 million.