Question 4. (6 points) A large lagoon or pond is often used as a primary wastewater treatment system. Wastewater enters the lagoon at one end, microorganisms in the soil (also known as the activated sludge) consume the waste organic matter in the water, and clean water exits at the opposite end of the body of water. A schematic of such a system is shown below. Your engineering firm has been tasked with conducting a safety check on a lagoon in your local area. Due to climate change, drought in the area has increased but so has the severity of the winter storms. The local regulations state that the height of the lagoon wall must be at least 1m higher than is required to withstand the most severe storm over the past 20 years. Your job is to determine if the current process still meets the safety regulation given that storm size has increased. Current analysis of the storm size and duration show that the largest storm surge over the past 20 years produced an increase in inlet flowrate into the lagoon of 30m3/ day for a 10-day period. The lagoon currently meets the safety requirement for a 15m3 /day, 10-day storm. Given the dimension of the lagoon has shown below, does the wastewater treatment facility meet the safety requirements for the larger storms? For full credit show how you determined your answer. THE TH in - the lagoon is circular with A RADIUS of 10m