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Reducing Lead Hazards, continued <br />If your home has had lead abatement work done or if the housing is <br />receiving federal assistance, once the work is completed, dust cleanup <br />activities must be conducted until clearance testing indicates that lead <br />dust levels are below the following levels: <br />• 40 micrograms per square foot (μg/ft2) for floors, including carpeted <br />floors <br />• 250 μg/ft2 for interior windows sills <br />• 400 μg/ft2 for window troughs <br />For help in locating certified lead abatement professionals in your area, <br />call your state or local agency (see pages 14 and 15), or visit <br />epa.gov/lead, or call 1-800-424-LEAD. <br />11