WWW-305 OSSF Designated Representative Module 2: Basic OSSF Math Review 100% Pass

WWW-305 OSSF Designated Representative Module 2: Basic OSSF Math Review 100% Pass 2.5 feet A trench measures 30 inches wide. How wide is the trench in feet? 0.46 acres The area of a lot is 20,076 square feet. What is the area of this lot in acres? 231.88 or 232 gallons A septic tank has a working volume of 31 cubic feet. How many gallons does this septic tank hold? 15.9 or 16 cubic yards A trench requires 430 cubic feet of gravel. How many cubic yards must be purchased? Designated Representative An official inspector of a new OSSF infectious diseases Domestic wastewater contains microorganisms that are capable of causing pathogens Microorganisms which cause disease are called bacteria, viruses, protozoa, and helminths Microorganisms in wastewater include typhoid, cholera, and dysentery Waterborne diseases which spread by pathogenic bacteria include amoebic dysentery and Giardiasis Protozoa are very simple animal organisms which may cause fecal coliform A type of bacteria that indicates sewage contamination poliomyelitis and infectious hepatitis Viruses are responsible for such diseases as hookworm, round worms, and tapeworms Parasites (helminths) found in untreated sewage nitrate An inorganic chemical which affects human health suspended solid A solid that can be filtered out of the wastewater the bacteria are larger than the pore openings in the soil Physical removal of bacteria by straining occurs when moisture, temperature, pH, and organic matter The factors influencing the survival of bacteria in soil