4.__Rights, duties or liability under federal law.__This section may not be construed to affect rights, duties or liability under federal law.

Sec. 3. 33 MRSA §173, sub-§4, ¶B, as enacted by PL 1999, c. 476, §1, is amended to read:

B. Lead-based paint for pre-1978 homes in accordance with federal regulations and Title 22, section 1328;