The Massachusetts Department of Environmental Protection (MassDEP) has sent compliance assistance letters to persons, who according to MassDEP records, own property at which a Notice of Activity and Use Limitation (AUL) applies. These letters remind property owners of their legal responsibilities as owner of a property with an AUL. These responsibilities, described below, are established in Massachusetts General Law chapter 21E and the Massachusetts Contingency Plan (310 CMR 40.0000), the state regulation that specifies requirements related to releases of chemicals (oil or hazardous material) to the environment.

Responsibilities as an Owner of a Property with an AUL

An AUL is a document recorded at the Registry of Deeds to provide notice to current and future property owners and other interested parties of uses or activities that may not be appropriate at a property where contamination remains in the environment.  An AUL provides information about:  (1) the nature and location of contamination remaining on a property, (2) the appropriateness of certain uses and activities, and (3) a property owner's obligations to ensure that the requirements of the AUL continue to be met.  

An owner of a property with an AUL, the Massachusetts Contingency Plan is required to:

  • Maintain any obligations and conditions that are specified in the AUL.
  • If contemplating a change in activities and/or uses that may not be consistent with the requirements of the AUL, hire a Licensed Site Professional to evaluate whether such change would require an amendment or new AUL, or additional cleanup on the property.
  • If the property is sold or transferred to a new owner, ensure that the AUL is incorporated in full or by reference in the instrument of transfer.

MassDEP Audits of AULs

MassDEP may audit any property for which an AUL has been recorded.  An audit evaluates whether the AUL has been properly implemented and whether the activities and uses occurring in the area subject to the AUL are consistent with the terms of the AUL.  A failure to comply with the terms of an AUL is a failure to comply with the Massachusetts Contingency Plan, and enforcement actions may be initiated against you.  The law provides for administrative penalties of up to $25,000 per day for failure to comply with the terms of an AUL.  

If you received an AUL Compliance Letter, but no longer own the Property with the AUL

If you are not the current owner of the property listed at the disposal site address of the AUL compliance assistance letter, you may provide MassDEP with updated information by completing the form below (BWSC 127).  This form may be completed on your computer, but must be printed, signed and mailed to MassDEP at the address included on the form.

BWSC127 AUL Property Ownership Update Form pdf format of BWSC127 AUL Ownership Update Form

If you have questions, please contact MassDEP by email at or by telephone at (617) 292-5823.