3) Based on the results from problem 1 and 2, estimate the hydrocarbon saturation in the reservoir if the log analysis indicates that the porosity is 20% and the true formation resistivity is 5.25 Nm.

2) Sample 4 from the previous data was flooded with crude oil, in several steps, in order to displace the brine. The remaining water saturation and E values were measured a teach of these displacement steps. Based on the measured data given below and other data from problem 1 calculate the true formation resistivity Rt as a function of water saturation Sw and subsequently determine the saturation exponent n of the Archie's saturation equation.

A complete mix activated sludge system is being designed to address a flow from a primary treatment process of 1000 m³/day. The design includes a 6-day solids retention time and typical kinetic parameter at 15°C. The wastewater has a bCOD= 192g/m³, nbVSS=30 g/m³, and an inorganic concentration of 10 g/m³. The aeration tank should maintain a concentration of MLV-=2500 mg/L. Assume the rbsCOD is equal to BOD and that it is typically 68% of the bCOD. Provide detailed calculations and an explanation of the steps you performed.