(1) "Confirmed lead poisoning" means a confirmed concentration of lead in whole blood equal to or greater than 20 micrograms of lead per deciliter for a single test or between 15 and 19 micrograms of lead per deciliter in two tests taken at least three months apart.

(2) "Day-care facility" means a structure or structures used as a school, nursery, child care center, clinic, treatment center, or other facility serving the needs of children under six years of age including the grounds, any outbuildings, or other structures appurtenant to the facility.

(3) "Department" means the Department of Public Health.

(4) "Dwelling," "dwelling unit," or "residential housing unit" means the interior of a structure, all or part of which is designed or used for human habitation.

(5) "Elevated blood lead level" means a blood lead concentration of ten micrograms per deciliter or greater as determined by the lower of two consecutive blood tests within a six-month period.

(5.1) "Lead hazard abatement" means the removal and correction, in a manner no more strict than what is determined to be absolutely necessary, of a specifically identified hazard which causes a confirmed lead poisoning.

(6) "Lead poisoning hazard" means the presence of readily accessible or mouthable lead-bearing substances measuring 1.0 milligram per square centimeter or greater by X-ray fluorescence or 0.5 percent or greater by chemical analysis; 100 micrograms per square foot or greater for dust on floors; 500 micrograms per square foot or greater for dust on window sills.

(7) "Lead safe housing" is housing that was built since 1978 or that has been tested by a person who has been licensed or certified by the Board of Natural Resources to perform such testing and either found to have no lead-based paint hazards within the meaning of Title X of the Residential Lead-Based Paint Hazard Reduction Act of 1992, 14 U.S.C. Code Section 185(b)(15) or housing that has been found to meet the requirements of the maintenance standard.

(8) "Maintenance standard" means the following:

(A) Repairing and repainting areas of deteriorated paint inside a residential housing unit;

(B) Cleaning the interior of the unit to a standard of cleaning which is at least customary in the local area at lease origination or as part of the abatement plan, whichever is first, to remove dust that constitutes a lead poisoning hazard;

(C) Adjusting doors and windows to minimize friction or impact on surfaces;

(D) Subject to the occupant's approval, appropriately cleaning any carpets at lease origination or as part of the abatement plan, whichever is first;

(E) Taking such steps as are necessary to ensure that all interior surfaces on which dust might collect are readily cleanable; and

(F) Providing the occupant or occupants all information required to be provided under the Residential Lead-Based Paint Hazard Reduction Act of 1992 and amendments thereto.

(9) "Managing agent" means any person who has charge, care, or control of a building or part thereof in which dwelling units or rooming units are leased.

(10) "Mouthable lead-bearing substance" means any substance on surfaces or fixtures five feet or less from the floor or ground that form a protruding corner or similar edge, protrude one-half inch or more from a flat wall surface, or are freestanding and contain lead contaminated dust at a level that constitutes a lead poisoning hazard. Mouthable surfaces or fixtures include vinyl miniblinds, doors, door jambs, stairs, stair rails, windows, window sills, and baseboards.

(11) "Persistent elevated blood lead level" means a blood lead concentration of 15 to 19 micrograms per deciliter as determined by the lowest of three consecutive blood tests. The first two blood tests shall be performed within a six-month period, and the third blood test shall be performed at least 12 weeks and not more than six months after the second blood test.

(12) "Readily accessible lead-bearing substance" means any substance containing lead at a level that constitutes a lead poisoning hazard which can be ingested or inhaled by a child under six years of age. Readily accessible substances include deteriorated paint that is peeling, chipping, cracking, flaking, or blistering to the extent that the paint has separated from the substrate. Readily accessible substances also include paint that is chalking.

(13) "Regularly visits" means presence at a dwelling, dwelling unit, school, or day-care facility for at least two days a week for more than three hours per day.

(14) "Supplemental address" means a dwelling, dwelling unit, school, or day-care facility where a child with a persistent elevated blood lead level or a confirmed lead poisoning regularly visits or attends. Supplemental address also means a dwelling, school, or day-care facility where a child resided, regularly visited, or attended within the six months immediately preceding the determination of a persistent elevated blood lead level or a confirmed lead poisoning.