Conn. Gen. Stat. § 16a-23a

The Commissioner of Consumer Protection shall adopt regulations in accordance with the provisions of chapter 54, (a) defining standard and substandard anthracite, based on specifications as to undersize and ash or slate and bone content, and (b) requiring any person, firm or corporation selling anthracite either (1) from out of state for resale within the state or (2) within the state only, to provide written notification to the purchaser as to whether such anthracite is standard or substandard, as defined in such regulations. Any violation of the regulations shall be deemed an unfair or deceptive trade practice under subsection (a) of section 42-110b .