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OSSF INSTALLER 2 EXAM 2025 | ALL QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) |
LATEST EXAM | ALREADY GRADED A+
Which of the following considerations should receive the greatest emphasis in selecting a type of OSSF system disposal option? a. System cost b. Electrical rates c. Soil and site conditions d. Maintenance and service availability ---------CORRECT ANSWER--------- --------c. Soil and site conditions would include On a west Texas site with 16 in of Class Ia soil over fractured rock suitable OSSF systems a. lined or unlined ETs b. lined ET or LPD systems c. lined ET or mound systems d. surface application or leaching chamber systems ---------CORRECT ANSWER-----------------c. lined ET or mound systems chamber 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 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.
. 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 a. checking and adjusting pressure on lines b.rigidly stabilizing each line as gravel is placed c. the installation of at least one inspection port per line d.the precise grade on the dosing pipe ( 1 in. fall / 100 feet ) --------- CORRECT ANSWER-----------------a. checking and adjusting pressure on lines Drip irrigation systems are most sensitive to which type of contaminant? a. BOD b. Fecal coliform c. Suspended solids d. Dissolved organics ---------CORRECT ANSWER-----------------c. Suspended solids A drip irrigation system must a. not be installed in Class IV soils b. be installed at a minimum depth of 18 in. c. have pressures adjusted to less than 10 psi on distribution lines d. be equipped with mechanisms to flush from the drainfield back to the treatment unit ---------CORRECT ANSWER-----------------d. be equipped with mechanisms to flush from the drainfield back to the treatment unit A mound or soil substitution drainfield often used a. In wetland areas b. Without treatment c. In conjunction with secondary treatment
d.When existing soils will not provide adequate treatment due to depth or texture ---------CORRECT ANSWER-----------------d. When existing soils will not provide adequate treatment due to depth or texture The primary threat from malfunctioning OSSF systems is ---------CORRECT ANSWER-----------------water born disease 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
List the soil treatment mechanisms important in treating wastewater --------- CORRECT ANSWER-----------------filtering or straining Adsorption Biological The is authorized to review permit applications , site evaluations , planning materials and conduct inspections of OSSFs. a. installer b. site evaluator c. maintenance technician d. Designated representative ---------CORRECT ANSWER-----------------d. Designated representative An individual who holds a valid license from TCEQ and who is compensated by another individual to construct install , alter , or repair an OSSF is a ( n ) a. Installer b. apprentice c. authorized agent d. maintenance provider ---------CORRECT ANSWER-----------------a. Installer An individual who visits a site and conducts soil evaluations and a site survey is a ( n ) a. apprentice b. Site evaluator c. authorized agent d. designated representative ---------CORRECT ANSWER-----------------b. Site evaluator _____adopted the current OSSF Rules in 1997 and revised them several times. ---------CORRECT ANSWER-----------------TCEQ
New OSSF licenses are issued for a term of _______.An individual must renew the license complete _________of TCEQ approved continuing education courses in order to ---------CORRECT ANSWER----------------- 3 years 24 hrs 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
Lots served by individual wells should be a minimum of ________acre in size for a septic tank system ---------CORRECT ANSWER-----------------one acre Lots served by a public water supply should be a minimum of _______ acre in size for installation of a septic tank system ---------CORRECT ANSWER-- ---------------one - half When minimum lot size cannot be met , an on site system must be designed by a _______ or a _________ ---------CORRECT ANSWER-------- ---------Pro engineer or a Pro Sanitarian When evaluating a topography site _________and potential for ________are key considerations ---------CORRECT ANSWER----------------- Slope floodind A major reason for wastewater system failure is a homeowner waste b. inadequate planning c. hydraulic overloading d. oils grease and fats ---------CORRECT ANSWER-----------------c. hydraulic overloading grease The size of OSSF systems are normally based upon the a. lot size b. soil profile c. hydraulic loading d. homeowner's preference ---------CORRECT ANSWER-----------------c. hydraulic loading
Some malfunctioning OSSF systems can be made to function properly with minimal cost by implementing ---------CORRECT ANSWER----------------- Water 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
Septic tanks must have a ____or ____compartment design. --------- CORRECT ANSWER-----------------2 or 3 In a two compartment system , the first tank should contain between ___to _____of the required capacity. ---------CORRECT ANSWER----------------- 1/2 to 2/ The location of the treatment tank is usually determined by ____of the land and out from the home the ________ and ______ ---------CORRECT ANSWER-----------------Slope of the land and The bathroom and Kitchen List three of the materials acceptable for the construction of treatment and pump tanks ---------CORRECT ANSWER-----------------Fiberglass Other materials approved by TECQ Reinforced plastic polyethylene Complete the following requirements for a house sewer. The pipe from the house to the septic tank must have a minimum inside diameter of no less than 3 inches. b. The slope of the house sewer shall be no less than 1/8 fall per foot of pipe.. The stub out location should be at the highest possible elevation with respect to the house foundation to avoid deep septic tanks. d. The line must be of Watertight construction e A two way clean out plug must be provided between the building and the septic tank. f. All fittings should be of the Sanitary type. g. An additional cleanout may be single type ) must be provided within 5 of every 90 ° bend and for every 50 ' of straight horizontal piping --------- CORRECT ANSWER-----------------a. 3 b. 1/ c .highest.
d. Watertight e. clean out septic f. Sanitary g. 5 and 50 ' 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.
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----------------
- c. 30 min. settling test mg / L Which of the following is true of an intermittent sand filter? a. Provides secondary wastewater treatment b Has a maximum surface loading rate of 1.2 gal./day/ft. c. Requires at least 24 in. of filter media that meets definite specifications ( ASTM C - 33 ) d. All the above ---------CORRECT ANSWER-----------------d. All the above Trickling filters and wetlands a. are anaerobic treatment systems b. are secondary treatment processes c. are widely used across Texas for OSSF treatment d. rely on straining or filtering as the main treatment mechanism --------- CORRECT ANSWER-----------------b. are secondary treatment processes 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
