CWEA Environmental Compliance exam with correct solutions

An industry operating an 8-hour shift, 5 days per week, generates 100,000 gallons of wastewater per shift. Their pretreatment system has a capacity of 150 gallons per minute. How long must the pretreatment facility operate to process the wastewater generated each day? 11.1 hours An industry has five sewer connections with the following discharge rates: 1) 300 gpd, 2) 75 gpd, 3) 725 gpd, 4) 1,200 gpd, 5) 200 gpd A flow-weighted composite sample of 5 liters is desired. How many milliliters of sample from each connection should be composited? 600, 150, 1450, 2400, 400 Prohibited discharges from industrial users to POTWs, as stipulated in the Clean Water Act, are pollutants that: create a fire or explosion hazard in the sewer or POTW. "MSDS" is an acronym for what? Material Safety Data Sheet Safety hazards associated with hydrogen sulfide in sewer systems include: toxic gasses. A significant industrial user can be defined as: a federal categorical industrial user.