Which of the following statements is false? Group of answer choices Infiltration increases as groundwater table decreases Inflow is stormwater that enters the collection system Infiltration is external water that enters the collection system through leaking joints, cracks and breaks The direct inflow can cause an almost immediate increase in flowrates in wastewater collection systems

A town with a sewer population of 4,000 has a daily wastewater flow, including industrial wastewaters of 1,600 m³ and an average BOD of 280 mg per liter. The industrial discharges to the municipal sewers are 60 m³ at 1,800 mg per liter BOD from a meat processing plant and 100 m³ at 400 mg per liter BOD from a soap canning plant. Determine the contribution of domestic flow in liters per person and the BOD in grams per person based on the town's wastewater, excluding the industrial wastewater.

only trou or false thy short answers

The Hazard Index criterion is often used for potential health risk associated with a chemical exposure incident. If the MTBE exposure intake is 0.00378 mg/(kg*d) and the oral RfD for MTBE is 0.005 mg/(kg*d), find the HI for an oral exposure in the drinking water system.

Hello Would you please solve this question. I got the results but it is incorrect  466.8 m^3, 20,000 m^3, 64,000 m^3 all are incorrect.

Hello Would you please solve this question. I got the results but it is incorrect  , 20,000 m^3, 10,000 m^3, 0.05 m^3 all are incorrect.

Give a statistical interperation of the data Split Samples. An industry and a municipal wastewater treatment plant disagreed about wastewater concentrations of total Kjeldahl nitrogen (TKN) and total suspended solids (TSS). Specimens were split and analyzed by both labs, and also by a commercial lab. The results are below. Give your interpretation of the situation. Specimen 1 2 3 4 5 6 7 Muni. 1109 1160 1200 1180 1160 1180 1130 TKN Ind. 940 800 800 960 1200 1200 900 Comm. Muni. 1500 1850 1215 2570 1215 2080 1155 2380 1120 2730 1120 3000 1140 2070 TSS Ind. 1600 2100 2100 1600 2100 2700 1800 Comm. 1600 1400 1400 1750 2800 2700 2000

A municipal wastewater treatment plant uses a circular clarifier. It receives 12 million gallons per day of wastewater. The clarifier radius is 25 ft and the depth is 29 ft. What is the detention time in the clarifier? What is the overflow rate? (1 cubic foot = 7.48 gallons)

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Drinking water supply for a college campus is contaminated with Chemical X at a concentration of 10 mg/L. Determine the non-carcinogenic daily intake (IN) over a 4-year undergraduate program. Assumptions: time on campus 5 days/week and 40 weeks/year and water ingested 2 L/day.