When the Maryland Department of the Environment identifies a child or pregnant woman with an elevated blood lead level, the Commissioner shall request the Department to conduct an environmental investigation of:The child or pregnant woman’s current residence; and A secondary property as defined by <cite data-path="13.02.01">this chapter</cite>. If the current residence or secondary property is part of a multi-family dwelling, the Department’s inspection for lead hazards may include:All units; and Common areas.