KUALA LUMPUR, March 30 - An accident involving a lorry carrying 17,000 liters of carbon dioxide and a multi-purpose vehicle (MPV) this evening caused congestion for about six kilometers (km) on the Karak Highway. A Malaysian Highway Authority spokesman said the congestion began at 6.32 pm as most of the lanes had to be closed due to the chemical spill at the accident location. "As of 8.50 pm, traffic was still at a crawl for six kilometers heading towards the accident location at KM36.2, while the emergency and slow lanes are still closed," he told Bernama. Meanwhile, Selangor Fire and Rescue Department director Norazam Khamis said they received an emergency call about the incident at 6.03 pm, and an eight-man team from the Selayang Fire and Rescue Station was dispatched to the location. He said the MPV driver suffered minor injuries to his knee and was sent to the Selayang Hospital for treatment, while five passengers in the vehicle and the lorry driver escaped unhurt."The firemen are waiting for the Hazardous Materials Management Team (Hazmat) to carry out the cleaning work," he said in a statement today. Bernama (a). Describe ONE environmental impact and ONE health impact towards humans of the chemical spill consisting of liquid carbon dioxide. (b). Mention THREE additional sections under the Environmental Quality Act 1974 that is relevant to the chemical spillage in the article above. (c). Due to the accident, the chemical spill of liquid carbon dioxide was categorized as scheduled waste and the scene had to undergo an environmental clean-up. Which part under the Act is most relevant for transporting this type of material