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OSSF INSTALLER 2 EXAM NEWEST EXAM 2025 |
ALL QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) | LATEST EXAM |
GRADED A+ | JUST RELEASED
Which of the following is required to determine the size of spray area required for an OSSF spray irrigation system? a. soil R , in gal./ft.2/day and Q in gal./min. b. Q in gal./day and aerobic plant capacity to c. rate of irrigation ( R ) allowed in that area and ( Q ) in gal./day D. maximum aerobic plant capacity and the soil acceptance tance rate rate ( R₂ ) ---------CORRECT ANSWER-----------------c. rate of irrigation ( R ) allowed in that area and ( Q ) in gal./day Which systems routinely require a pump tank? a. LPD and leaching chambers b. Gravelless pipe , sand filters and LPD c. Surface and drip irrigation and sand filters d. Drip irrigation and standard absorptive drainfields ---------CORRECT ANSWER-----------------c. Surface and drip irrigation and sand filters The setback from a public water well for an aerobic plant is a. 50 feet b. 100 feet c. 150 feet d. determined based upon slope percent ---------CORRECT ANSWER------- ----------A. A legal maintenance company for a surface application OSSF system using proprietary aerobic plant must have an employee who is which of the following?
a. A licensed maintenance provider b. A registered maintenance technician c. A registered installer and maintenance technician d. A registered installer or class D wastewater operator ---------CORRECT ANSWER-----------------a. A licensed maintenance provider Which OSSF disposal systems are routinely required to have maintenance contracts? a. LPD mounds and lined ETs b. Sand filters with LPD disposal c.LPD and surface application systems d. Surface and subsurface drip irrigation ---------CORRECT ANSWER------- ----------d. Surface and subsurface drip irrigation What is the purpose of requiring an affidavit to be filed with the county real property records for a surface application system? a. To ensure a permit was obtained b. To ensure the future DR has a permanent record c. To notify the current property owner of the type of OSSF system used and maintenance requirements d. To notify future property owners of the type of OSSF system used and the maintenance requirements --------- CORRECT ANSWER-----------------d. To notify future property owners of the type of OSSF system used and the maintenance requirements Required samples for testing from a surface application system are collected from a .all chambers b. the aeration chamber. c. the surface of the clarifier
. d. the pump tank effluent line port ---------CORRECT ANSWER-------------- ---d. the pump tank effluent line port new three bedroom An important part of the installation of an LPD system is
Wastewater disposal and OSSF systems are regulated in order to protect -- -------CORRECT ANSWER-----------------Public health and environment A ______ is a disease-causing microorganism ---------CORRECT ANSWER-----------------Pathogen A groundwater chemical contaminant that can result from septic tanks and leachfields is which can cause_____in infants ---------CORRECT ANSWER- ----------------Nitrates and methoemoglobinmia Statewide regulation of OSSF began in ---------CORRECT ANSWER--------- --------1989 Sept The state agency responsible for regulating OSSF is ---------CORRECT ANSWER-----------------TECQ The desired method or level of OSSF regulation in Texas is _______regulation ---------CORRECT ANSWER-----------------Local pH measures whether wastewater is ______\or_________ --------- CORRECT ANSWER-----------------Acidity Basicity
List six diseases that might be transmitted by inadequately treated sewage
. ---------CORRECT ANSWER-----------------Typhoid Paratyphoid Polio meningitis Hepatitis Cholera Identify the following terms TSS DO BOD ---------CORRECT ANSWER------ -----------Total Suspended solids Dissolved Oxygen Biochemical oxygen demand Identify the most common chemical elements of sewage ---------CORRECT ANSWER-----------------Solids Gases Fats and greases DO BOD PH What is the criteria that can be used to determine if a subsurface OSSF system is functioning properly? ---------CORRECT ANSWER----------------- The Plumbing system must drain No Water is surfacing or pooling above ground There are no odors The waste water must receive nearly complete treatment List the soil treatment mechanisms important in treating wastewater --------- CORRECT ANSWER-----------------filtering or straining Adsorption Biological
an Individuals working as a _________ or in any capacity for an OSSF __________cannot work as an installer designer for a fee , or private site evaluator within jurisdiction of the permittinh authority ---------CORRECT ANSWER-----------------DR and Permitting agency List the OSSF licenses that require previous experience ---------CORRECT ANSWER-----------------Installer II Maintenance provider What is needed to pre - qualify for an exam? ---------CORRECT ANSWER- ----------------Submit an application Notarized experience Statements Paying class and application Fees Completing the appropriate training Course Penalties for violating the laws , rules , or regulations covering OSSF systems can be imposed under what headings? ---------CORRECT ANSWER-----------------Criminal penalties Injunction civil Suit Administrative What should be included in an evaluation of a lot for design and installation of a septic tank system? ---------CORRECT ANSWER-----------------lot Size Soil and Geolgic Setbacks Flood hazards
Give a brief description of the three textural classes of soil suitable for a standard absorptive drainfield according to Texas OSSF rules --------- CORRECT ANSWER-----------------Class b = Description Sandy Class 2 - Description Course loamy Class 3 - Description fine loamy and Sandy Clay Most OSSFs use the soil to _______and t_______ wastewater --------- CORRECT ANSWER-----------------absorb and treat The most permeable of the above textural class would be --------- CORRECT ANSWER-----------------2b Mottled soil , particularly with bright and gray variations , is often indicative of _______soil. ---------CORRECT ANSWER-----------------Seasonally A very common reason for soil absorption system failures is inadequate ---- -----CORRECT ANSWER-----------------lot Size When systems fail in urban or suburban areas , there is a serious threat of the spread of ---------CORRECT ANSWER-----------------Water born disease Lots served by individual wells should be a minimum of ________acre in size for a septic tank system ---------CORRECT ANSWER-----------------one acre
The first step in reducing the wastewater load is ---------CORRECT ANSWER-----------------Elimination of leaks List four water - saving plumbing devices that can be used in a home --------
- CORRECT ANSWER-----------------Reduce flow shower head Faucet aerators Reduce flow faucet Pressure reducinh valves Identify four water saving living habits homeowners should adopt --------- CORRECT ANSWER-----------------Waiting for full loads before running clothes or dishwashers Not using the toilet to dispose of trash such a cigarette butts tissue paper or sanitary napkins Not leaving the faucet running when shaving or brushing teeth Reducing or eliminating the use of garbage disposals The value of Q ---------CORRECT ANSWER-----------------Quantity of sewage (gallons/day) Two wastewater tests commonly used to measure the strength of sewage are the _______ and the _____ ---------CORRECT ANSWER----------------- BOD and the SS Blockage in the home plumbing system is often caused by _______, _______ and _______ ---------CORRECT ANSWER-----------------Oils fats and grease
It is recommended that ____________not be used because they significantly increase the amount of suspended solids and organic matter discharged into the sewage disposal system ---------CORRECT ANSWER-- ---------------Garbage disposal Wastewater containing no DO is referred to as ___________is __________, and has _________odor. ---------CORRECT ANSWER--------- --------Septic Dark grayto black color strong disagreeable Information on boundaries and property lot size , soil conditions , and location of existing or planned buildings is obtained during the a. permit application b. site evaluation c. construction d. installation ---------CORRECT ANSWER-----------------b. site evaluation ______should NOT be allowed over the OSSF treatment unit or drainfield a. Vegetation b. Mowing c. Earth fill d. Rainfall runoff ---------CORRECT ANSWER-----------------d. Rainfall runoff Septic tanks must have a ____or ____compartment design. --------- CORRECT ANSWER-----------------2 or 3
The size of any drainfield is dependent on what two factors? --------- CORRECT ANSWER-----------------Sewage bading or volume in gallons day = a Long term soil acceptance rate determined by Class Complete the following requirements for a standard absorptive drainfield a. Minimum depth is ___" inches. b. Minimum separation between drainfield excavations is ____' feet. c. In most cases , the maximum drainfield depth is _____' feet. d. The porous media most commonly used is _______gravel. --------- CORRECT ANSWER-----------------a. Minimum 18 " b. 3 ' c. In ' d. The Clean Gravel A ____________of __________shall be placed on top op the porous media before backfilling ---------CORRECT ANSWER-----------------Permeable barrier geo fabric The backfill above the barrier and gravel should be type ______,______ or _____soil. ---------CORRECT ANSWER-----------------1b,11 or 11 Which of the following is true of aerobic treatment plants? a. Able to maintain a minimum DO of 4.0 mg / L b. Odor free , utilize aerobic bacteria and produce hydrogen sulfide gas. c. Use aerobic bacteria and oxygen to breakdown complex organics and produce carbon dioxide d. Use aerobic bacteria and carbon dioxide to produce complex organic compounds and natural gas ---------CORRECT ANSWER-----------------c. Use aerobic bacteria and oxygen to breakdown complex organics and produce carbon dioxide
To determine if a proprietary aerobic treatment plant is appropriate for use with surface application disposal it must a. be on the TCEQ's most recently approved list b. be able to maintain a minimum DO of 4.0 mg / L c. have a volume equal to three times the expected daily flow d. be certified by a PE or RS to provide 90 % or better treatment --------- CORRECT ANSWER-----------------d. be certified by a PE or RS to provide 90 % or better treatment To determine the minimum size of aerobic treatment plant needed for a particular home , one must know d a. soil acceptance rate ( R₂ b aeration and clarifier volumes c. rate of irrigation ( R ) from OSSF Rules d. number of bedrooms in the home and refer to TCEQ Table II --------- CORRECT ANSWER-----------------d number of bedrooms in the home and refer to TCEQ Table II Which of the following is a likely cause of a " rotten egg " odor from an aerobic treatment plant? a. Chlorinator failure b. Mechanical aerator failure c. Failure to install a trash trap d. Hydraulic overload caused by a leaking toilet ---------CORRECT ANSWER-----------------b. Mechanical aerator failure and need for wasting? Which of the following is a way of evaluating an aerobic treatment plant for excessive solids a. DO test. b. BOD5 analysis c. 30 - min. settling test d. Chlorine residual test in mg / L ---------CORRECT ANSWER----------------
The minimum soil requirements for leaching chambers or gravelless pipe systems following a septic tank are A. 2 ft. of Class Ib , II , or III soil below the field bottom B. the same as for a standard absorptive drainfield C. 4 ft. of permeable soil with no more than seasonable saturation D. both a and b ---------CORRECT ANSWER-----------------D both a and b OSSF surface application always requires a. at least primary treatment and disinfection b. at least secondary treatment and disinfection c. primary treatment and disinfection or secondary treatment atenti d. tertiary treatment bvad ---------CORRECT ANSWER-----------------b. at least secondary treatment and disinfection vision Why is surface application often selected over other OSSF disposal options? a. Small lots diw it b. The lake front setback for waterfront property assage nonsollege c. Clay soils and / or seasonal groundwater problems qb d. The irrigation water available for vegetable gardens or orchards --------- CORRECT ANSWER-----------------c. Clay soils and / or seasonal groundwater problems List hazards that require the use of PPE. ---------CORRECT ANSWER------ -----------Processes or environment Chemica Radiological mechanicl Through what methods can the above hazards be taken into the body? ---- -----CORRECT ANSWER-----------------Absorption Inhalation Phsical Contact
The maximum inlet pressure for sprinkles be maintained at --------- CORRECT ANSWER-----------------40 pounds per square inch Distribution lines should have a maximum length of _ feet from the manifold to avoid excessive pressure loss (design should specify pressure) --------- CORRECT ANSWER----------------- 70
