Cwea Collections Grade 2 Practice Test (100 Out Of 100) Questions And Answers.

To report in the Statewide SSO Data-base California Integrated Water Quality System (CIWQS), regarding the location of a Category 2 SSO, you must know: {Ans: the GPS coordinates}What is the first thing to consider when selecting a solution to clear a stoppage in a sewer? {Ans: Cause of stoppage}How many different areas of traffic zones are there when working in roadways? {Ans: Five}What does "LEL" mean on a gas detection meter? {Ans: Lower explosive limit}If an 8 inch force main has a metered flow rate of 400000 gpd, what is the velocity? {Ans: Velocity = Flow / Area Area = 0.785 x Diameter x Diameter When finding Area, convert Diameter into feet 8 in x (1 ft / 12 in) = 0.667 ft Area = 0.785 x 0.667 ft x 0.667 ft = 0.349 sq ft Convert flow in gallons to cubic feet per second: (400000 gal / 1 day) x (1 cu ft / 7.48 gal) x (1 day / 24 hours) x (1 hr / 60 min) x (1 min / 60 sec) = 0.619 cu fps Velocity = 0.619 cu fps / 0.349 sq ft Velocity = 1.77 fps}During the 24-hour operation