Septic Pumper Practice Test

These questions are part of the practice quiz. Start practicing

• Which of the following pH levels indicates an acidic condition?
• A settling tank measuring 60ft by 20ft by 12ft treats a flow of 2.4 MGD. What is its detention time?
• How does temperature affect BOD levels in wastewater?
• What is the formula for calculating the area of a circle?
• A system that has both treatment and disposal components is known as what?
• Which of the following is NOT a contributor to high strength waste characteristics in the waste stream?
• What is a common sign that a septic system may be failing?
• What term describes the wastewater that flows into the septic tank from the house?
• What is the hydraulic loading rate for Soil Type 2?
• What advantage do pressure distribution systems provide for drainfield application?
• How many pounds of BOD are removed daily at a sewage treatment plant with an average BOD removal of 200 ppm for a flow of 1.5 MGD?
• What happens to solids that accumulate in a septic tank if not pumped out regularly?
• Which definition accurately describes the "Water Table"?
• What is the definition of a "Cesspool"?
• What component follows a septic tank in the treatment process?
• Which of the following are examples of Alternative Systems?
• Does the pH range of 8 - 14 indicate an alkaline condition?
• Which type of soil structure is characterized by flat peds that lie horizontally?
• At what level must holding tanks be pumped?
• At which pH level do fungi begin to be favored over bacteria in competition for food?
• Which pH value is considered neutral?
• Why is maintaining an appropriate pH in a septic tank important?
• What is the primary function of the effluent filter in a septic system?
• How many square feet are in one acre?
• Which gas is most commonly associated with septic wastewater?
• What describes Soil Type 5?
• Which of the following diseases are potentially carried by wastewater?
• What is wastewater flowing out of the tank to the drain field generally called?
• True or false: Gravel, cobbles, stones, and boulders are examples of "Rock Fragments."
• In a properly working septic system, what is expected to be found in the leach field?
• What is the unit of measurement for the pressure against which a pump must operate?
• What is the weight of 1 gallon of water?
• Which of the following statements is true regarding wastewater treatment efficiency?
• Is a proprietary device (ATU) considered "public domain" technology?
• Gray water and black water must be treated equally as “wastewater”.
• What is the conversion factor to use when converting flow rate from gpm to cubic feet per second?
• What is the primary function of a septic tank?
• What does BOD/5 refer to in wastewater management?
• What is the average velocity in feet per second in a channel that is 2.5ft wide with a flow rate of 7.2MGD?
• What is the minimum land area requirement for an individual water supply with soil type 5?
• What type of material is required to surround the bottom of a drainfield for pollutant absorption?
• What describes Soil Type 3?
• What factor does NOT significantly affect the performance of a septic system?
• How many gallons of wastewater would 600ft of 6-inch pipe hold approximately?
• What is the purpose of a septic tank?
• If soil contains 35% or more rock fragments but less than 60%, it is classified as what?
• What type of odor is typically linked to a too basic pH?
• What is the approximate value of π?
• What soil classification corresponds to having 60% or more rock fragments by volume?
• What is the definition of BOD in sewage treatment?
• Where is the highest concentration of algae growth usually found in a facultative lagoon?
• What is a "stub-out" in the context of residential wastewater systems?
• What is the hydraulic loading rate for Soil Type 6?
• What is the minimum land area requirement for public water supply with Soil Type 3?
• What does detention time in a wastewater tank generally refer to?
• In wastewater treatment, what is the main purpose of using a settling tank?
• What is the primary purpose of an interceptor drain?
• What describes a "Holding tank sewage system"?
• Which is a disadvantage of a conventional septic system?
• What is the average weight of a gallon of water in kilograms?
• Which of the following components is critical for filtering effluent before it enters groundwater?
• The neutral wire in a building electrical system is usually what color?
• What does BOD stand for in the context of wastewater treatment?
• What describes the particle size of Soil Type 6?
• What is the formula for calculating flow?
• Is it true that all gravelless technology must be listed on an approved list by the state DOH?
• What does FOG stand for in wastewater management?
• What is the formula for calculating the circumference of a circle?
• What is the purpose of the septic tank in a wastewater system?
• What is considered the primary purpose of a septic system?
• What type of valve allows water to flow in one direction only?
• How is the "Ordinary high-water mark" defined?
• What is considered a significant indicator of wastewater treatment efficiency?
• What is the organic loading rate in lbs BOD5 / 1000ft2 / day for a flow with a BOD5 of 190 mg/l at a rate of 0.80 gallon per minute?
• Which component describes the process of collecting wastewater through plumbing to the septic tank?
• Which characteristics indicate a healthy activated sludge process?
• Which is the correct conversion from feet to meters for 1 cubic foot of water?
• What is the main function of a sedimentation tank in wastewater treatment?
• If the average winter temperature in Washington is between 25 and 45 degrees F, what range would you expect the wastewater effluent to be?
• How much does 7.5g of water weigh in lbs?
• What type of smell is associated with acidic pH levels?
• What is the normal pH range for a septic tank?
• Does a step-down system require the first "leg" to be flooded or failed before the next leg receives wastewater?
• Soil with 15% or more but less than 35% rock fragments is categorized as?
• What is the main component of "Groundwater"?
• Why is a Glendon biofilter considered advantageous in wastewater treatment?
• What is a standard unit of area in land measurement?
• What is typically required from homeowners when maintaining a septic system?
• Soil Type 7 is considered suitable for treatment or dispersal?
• What is a main advantage of an ATU?
• What are rocks or mineral fragments with a diameter of 2mm or more referred to as?
• What is the typical range of pH for most wastewater treatment processes?
• What is the primary purpose of a drain field in a septic system?
• How does a multiple pass filter compare to a single pass sand filter?
• What is the primary reason for using a septic pumper?
• What is the formula for calculating the area of a rectangle?
• What type of system relies on gravity to move wastewater through the treatment process?
• How is velocity calculated?
• Which of the following is a correct expression for the volume of a cylinder?
• What is a characteristic of chlorine gas?
• How does a septic system contribute to public health?
• What is the static pressure at the base of a tank with a water level of 50 feet?
• Which of the following gases is a byproduct of the anaerobic breakdown of organic matter in a septic system?
• What defines a "Bed" in septic systems?
• What is the hydraulic loading rate for Soil Type 5?
• The purpose of a recirculating filter tank is primarily to?
• What is the principal function of gravelless technology in septic systems?
• Composting toilets are regulated and require a permit.
• What is the primary purpose of a check valve used on a pump station?
• What is the velocity in feet per second in a 12-inch diameter pipe at a flow rate of 1200 gpm?
• What is one advantage that a gravity drainfield has over a dosed drainfield system?
• Is the pH range of 0 - 6 considered alkaline?
• Approximately how many residents in Washington state utilize septic systems?
• What is the significance of BOD5 measurement in wastewater treatment?
• What does "Surface Water" include?
• What is the minimum land area requirement for a public water supply with soil type 4?
• What depletes oxygen in receiving water when organic wastes are discharged?
• What is the required minimum liquid tank volume for a system with 6 bedrooms?
• Your wastewater treatment plant serves 1100 people, and the average flow is 80,000 gpd. What is the approximate daily flow contribution per person?
• What major benefit does regular maintenance of a septic system provide?
• What characterizes a "Seepage Pit" in septic systems?
• Which test is typically never performed on wastewater influent?
• What pH level indicates an acidic condition?
• What is an indicator of a potential issue in a septic system?
• What is the hydraulic loading rate for Soil Type 2?
• Which locations may be hazardous due to an oxygen-deficient atmosphere?
• Which form of plant life is necessary for the functioning of a stabilization or oxidation pond?
• Can local health jurisdictions increase minimum flows per bedroom to adjust drain-field sizing?
• What is the primary role of anaerobic bacteria in a septic system?
• What is the design flow criteria at the state level for residential systems per bedroom, per day?
• What can result from a significantly high pH in a septic tank?
• In relation to septic systems, what role does a "grease interceptor" serve?
• What is the average daily flow (in gpd) for a system serving 1100 people with a total flow of 80,000 gpd?
• If the wastewater effluent in a gravity system tests at 7 DO, what could this indicate?
• What is described as a unit of soil structure formed by natural processes?
• What is the pH scale range for measuring acidity and alkalinity?
• Which gas is produced in anaerobic digesters and can be used as a fuel?
• What is the immediate first aid step for burns?
• What is the primary function of the drainfield system following a septic tank?
• Calculate the lagoon’s detention time given a surface area of 6 acres, an average depth of 3 ft, and an average daily flow of 0.25 MGD.
• Are biological additives preferred over chemical additives in septic systems?
• What is typically found in a pump tank/dosing chamber?
• What is the optimal pH range for a septic tank?
• Hydrogen sulfide has an odor resembling which of the following?
• What is the required minimum liquid tank volume for each additional bedroom after 4 bedrooms?
• Why is uniform distribution and dosing of wastewater important?
• A pump runs continuously for 24 hours at full speed and delivers 288,000 gallons. What is the capacity of the pump in gallons per minute?
• How many gallons are in 1 cubic foot of water?
• What type of pump is an effluent pump?
• What is the primary function of the top float on a float tree in a pump tank?
• What does pH stand for?
• According to WAC 246-272A, what is the general criteria for the number of Glendon biofilter pods per bedroom?
• What type of media filter is a Glendon biofilter?
• Which two major considerations impact wastewater systems and the environment?
• What characterizes Soil Type 1?
• What type of component is an ATU in a wastewater system?
• Which type of waste is characterized by high organic content and pathogens?
• What is the minimum land area requirement for public water supply with Soil Type 6?
• Which type of bacteria thrive in the absence of oxygen?
• What is the primary use of chlorine in wastewater treatment?
• How frequently should a septic tank generally be inspected?
• What is a sign of a balanced septic tank environment?
• How many minutes are in 1 day?
• How is the volume of a rectangle or circular tank with uniform depth calculated?
• What happens to the microbial environment of a septic tank when the pH is too low?
• What is the formula for calculating detention time?
• What type of pump is characterized as high pressure/low volume?
• Which best describes a "Drainfield" in septic systems?
• What is the hydraulic loading rate of Soil Type 3?
• Which of the following is most likely to cause electric motor failure?
• The sand in the mound of a "mound system" primarily serves what purpose?
• What is the minimum land area requirement for an individual water supply with soil type 3?
• What should be regularly inspected in a septic system?
• What is the drainfield trench loading rate in gpd/ft2 for a system with twenty laterals each 50-feet long and an average flow of 1.5 gpm?
• Why are flow measurements important in wastewater treatment?
• Which organism should not be present in a healthy lagoon treatment system?
• What is the primary problem associated with high levels of bacteria in waterways due to wastewater discharge?
• What is the flow in ft³/sec for wastewater flowing through a 42in diameter pipe at a rate of 6.5ft/sec?
• Which factor can affect the lifespan of a septic system?
• How much is 1 gallon of water in liters?