Maryland Code, Environment § 14-108

(1) The proposed operation shall violate a requirement of this subtitle or a regulation adopted under this subtitle;

(2) The proposed drilling or well operation poses a substantial threat to public safety or a risk of significant adverse environmental impact to, but not limited to, the following:

(3) The applicant has failed to receive applicable permits or approvals for the operation from all State and local regulatory units responsible for air and water pollution, sediment control, and zoning;

(4) The operation will constitute a significant physical hazard to a neighboring dwelling unit, school, church, hospital, commercial or industrial building, public road, or other public or private property in existence at the time of the application for the permit;

(5) The operation will have a significant adverse effect on the uses of a publicly owned park, forest, or recreation area in existence at the time of the application for the permit; or

(6) The applicant has not corrected any violations committed by the applicant under any prior permit.