Consider how to reduce water turbidity in a water treatment plant. The plant's design flow is 6 MGD (million gallons per day). The minimum detention time is 4 hours to get adequate settling; 4 hours is the design standard for a water treatment plant that uses high rate filters. Assume a tank depth of 12 feet and a length to width ratio of 4:1. The state requires two sedimentation basins. What should be the dimensions of each sedimentation basin in this water treatment plant?