310 CMR, § 15.019
No individual shall engage in the construction, upgrade, modification, emergency repair, or expansion of any on-site system without first obtaining a Disposal System Installer's Permit from the Approving Authority. Disposal System Installer Permits shall be issued for a period of not more than two years. The Local Approving Authority shall issue Disposal System Installer Permits only to those individuals who have demonstrated knowledge of and experience with the proper construction and installation of systems in accordance with 310 CMR 15.000. The Approving Authority, by issuance of an order, may suspend or revoke a Disposal System Installer's Permit, for a time specified in the order, when it determines that the Installer has failed to comply with 310 CMR 15.000 with respect to the installation of one or more systems, including, without limitation, the Installer's failure to provide the certification required by 310 CMR 15.021(3), or the Installer's installation or certification of a system that fails to comply with the Disposal System Construction Permit.
310 CMR, § 15.019