454 C.M.R. 22.03
(1) General Requirements for Licensure of Deleading Contractors. Except as allowed by 454 CMR 22.03(1)(a) through (c), no person, firm, corporation or other entity shall enter into, engage in or work at the business of lead abatement unless such person, firm, corporation or other entity has been duly licensed as a Deleading Contractor, in accordance with 454 CMR 22.04. For the purposes of 454 CMR 22.03(1), the phrase "engage in . . . the business of lead abatement" includes, but is not limited to, advertising Deleading services and submitting bids for work in which the majority of the contract-value of the project involves Deleading Work.
(2) Requirements for Licensure or Certification of Supervisors and Workers on Deleading Projects.
(4) Requirements for the Use of Certified Supervisors and Trained Workers on Renovation Projects.
(10) Requirements for the Conduct of Deleading Projects. Persons, firms, corporations or other entities who carry out Deleading Projects shall ensure that the requirements of 454 CMR 22.12 for such work are met.
(12) Requirements Pertaining to the Use of Personnel for Renovation and Deleading Work.