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NM WATER LEVEL 4 EXAM 2 2025: QUESTIONS AND 100% VERIFIED ANSWERS /GRADED A+ /GUARANTEED PASS!! A 10 MG D, conventional water treatment plant, obtains its water from a reservoir, continuous raw water pH monitoring indicates that the pH rises throughout the daylight hours and drops during the night. What condition is indicated by this information? - answer-An impending tased an order problem A 12 inch pipe carrying a flow of 1200 GPM feeds into a 6 inch pipe. If the velocity of the water in the 12 inch pipe is 3.4 ft./s. What will the velocity of the water in the 6 inch pipe be? - answer-13.6 A near 1000ft long ___ inch diameter PVC pipeline is to be installed in a rocky area. A 24" in wide trench was excavated to a depth of 4ft. How many cubic yards of bedding sand will be required to provide sand encasement around the pipe for a total depth of 24" inches , assuming 12" inches of bedding is to be replaced below the pipe? - answer-135 cubic yards A new 10"in water main 2640 ft long is to be disinfected by applying 60 mg/l of Chlorine and allowing it to stand for 24 hours. How many pounds of dry hypochlorite 65% chlorine will be needed? - answer-8.3 A solid contact basin combines which of the following processes? - answer-Coagulation, flocculation and sedimentation A water main break has lowered the water pressure in a section of the distribution system. What is one possible result of this low pressure? - answer-Contamination A water system serving 14,000 people has a service water treatment plant that includes it's conventional treatment. Coagulation, sedimentation, filtration and chlorine disinfection under the capital, NM utility operators certification regulations. What level of operator must be placed in charge of the system? - answer-Level lV (4)