As used in this part, the term: (1) ‘‘Biomedical waste’’ means that term as defined in paragraph (1.1) of Code Section 12-8-22. (2) ‘‘Commercial purpose’’ means for the purpose of economic gain. (3) ‘‘Dump’’ means to throw, discard, place, deposit, discharge, burn, or dispose of a substance. (4) ‘‘Egregious litter’’ means all litter, as such term is defined in paragraph (1) of Code Section 16-7-42, exceeding ten pounds in weight or 15 cubic feet in volume; any discarded or abandoned substance in any weight or volume if biomedical waste, hazardous waste, or a hazardous substance; or any substance or material dumped for commercial purposes. (5) ‘‘Hazardous substance’’ means that term as defined in paragraph (4) of Code Section 12-8-92. (6) ‘‘Hazardous waste’’ means that term as defined in paragraph (10) of Code Section 12-8-62.