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17 <br /> Matt Efird said that the spikes show wet-weather events. He said that the aged wastewater <br /> systems allow input at various entry points. He said that is rainwater getting into the aged sewage <br /> center. He said that from a basic hydraulic standpoint, they have capacity in the system. <br /> Slide #6 <br /> Future Wastewater Flow Projection <br /> Hillsborough Wastewater Average Annual Daily Flow <br /> Million Gallons per Day <br /> 3 <br /> W WTP Rated Capacity <br /> cone of uncednimy <br /> z.s <br /> ��rrr ur r.1. rar rn rar <br /> 1.5 <br /> Trendline <br /> i <br /> Pas[1fi years of historical data averages an annual <br /> increase U 2.MA in average daily hydraulic flow. <br /> d.s <br /> 0 <br /> I� N ry ry � rv � r r r ry N N r r ry rv � � � ry i3 i3 N N ry N <br /> Matt Efird said that the future wastewater flow projection shows that the Town's capacity <br /> is in a good place from a hydraulic perspective, excepting wet water events. <br /> Slide #7 <br /> Nutrient Limitations <br /> • Falls Lake Rules <br /> • Town wastewater permit limits pounds of nitrogen and phosphorus <br /> discharged annually <br /> • No concentration permit limit forthese but measured in ni and converted to pounds <br /> • Nitrogen is of main concern <br /> • Found in organic waste (i.e., mostly human and food sources) <br /> • Limited to 10,422 lbs. per year <br /> • Used 68% in 2024 <br /> • Noticeable increase in 2023 and 2024 <br />