Before a qualified project is authorized to exceed the density in an area zoned for nonresidential use under § 7–502(b)(4), § 7–503(c)(4), or § 7–504(b)(4) of this subtitle, the entity responsible for the qualified project shall: conduct a public health impact assessment; and receive approval of the public health impact assessment from the Department of Housing and Community Development. A public health impact assessment under this subsection shall evaluate potential public health impacts associated with the proximity of the qualified project to any health hazards within the area zoned for nonresidential use. The Department of Housing and Community Development may not approve a public health impact assessment submitted under this section if the assessment shows that residential use in the nonresidential zone would present a substantial risk to the health and safety of the residents. The Department of Housing and Community Development shall adopt regulations to carry out the provisions of this section.