The Massachusetts Department of Environmental Protection (MassDEP) recently assessed a $23,570 penalty against three entities for failing to obtain a proper state and local approvals to operate a solid waste facility in Millbury.

According to a statement from the MassDEP, Westboro Road Realty Trust, Treeline Construction Inc. and Atlantic Construction Services Inc. were using a parcel at 130 Westborough St. as a dumping ground for rock, masonry and concrete without having first sought approval from the state agency and the Millbury Board of Health.

The MassDEP discovered the violation when, responding to a complaint, it inspected the site in December 2011. A previous notice of noncompliance required the removal of all materials from the site, citing prohibitions against open dumping. The December 2011 inspection revealed that no removal of material had occurred.

In a recently signed consent order, the three companies agreed to pay the penalty and have developed a compliance plan for MassDEP approval. The approved compliance plan includes the removal and recycling of all stored solid waste from the site by early summer.