400 CMR 2.10
Permit Modifications
Issuing authorities shall make every reasonable effort to review permit modification requests
within as short a period as is feasible to maintain the integrity of the expedited permitting
process. An issuing authority shall inform an applicant within 20 business days of receipt of a
request whether the modification is approved, denied, determined to be substantial or requires
additional information for the issuing authority to issue a decision. If additional information is
required, the issuing authority shall inform an applicant by certified mail within 20 business days
after receipt of the required additional information whether the modification is approved or
denied or that further additional information is required by the issuing authority in order to render
a decision.