Download TCEQ OSSF Installer II Practice Course Review 2025/2026 | Texas TCEQ Exam Questions and more Exams Water and Wastewater Engineering in PDF only on Docsity!
TCEQ OSSF Installer II Practice Course
Review 2025/2026 | Texas TCEQ Exam
Questions with Detailed Answer
Explanations
In the hydrologic cycle, water moves by evaporation and transpiration into the ___________________ where it comes in contact with cooler air, condenses, and falls to the ground in the form of _____________________ (sleet, snow, hail or rain), and the surface water supply through _____________________. - ANSWER- ATMOSPHERE, PRECIPITATION, RUNOFF The term ___________ _____________ refers to water that collects beneath the surface of the earth in porous, permeable, water-bearing geologic formations or aquifers. - ANSWER-GROUND WATER The term __________ _____________ refers to water that is found above ground in containment areas, such as lakes, rivers, streams, creeks and reservoirs. - ANSWER-SURFACE WATERS Water table aquifers are recharged by ___________ __________________. - ANSWER-LOCAL PERCOLATION.
Rock-filled or lined pits dug at least 4 feet deep at the end of a septic tank absorption field system are called _________ _________. - ANSWER-SEEPAGE PITS. Pits constructed in permeable soil with open-jointed material along the sides to the bottom of the pit that receive a direct discharge of raw waste water are called __________________. - ANSWER-CESSPOOLS. How are water born diseases transmitted? - ANSWER-MICROORGANISMS What are 3 primary routes of containment for pathogenetic microorganisms and harmful chemicals from on-site sewage systems to our environment? - ANSWER- Neighborhood pollution, groundwater pollution and surface water pollution. What problems are a result of neighborhood pollution? - ANSWER-~Diseases that can be spread by direct or indirect contact with the standing water. ~Vectors such as roaches and flies, that can also spread diseases after coming in contact with the waste water. ~Unsightly and unpleasant living conditions that result from the standing waste water. ~Feuds and bad relationships with neighbors that can result from waste water problems.
Ground water quality is recognized as a minor problem in Texas. - ANSWER-FALSE Cesspools and seepage pits are legal systems in Texas and may be installed. - ANSWER-FALSE Bore holes and injection wells are legal in Texas and may be installed. - ANSWER- FALSE Artesian aquifers can be contaminated by bore holes and injection wells. - ANSWER-TRUE In America, laws can be successfully enforced only when the majority of citizens voluntary comply. - ANSWER-TRUE Home owners should be educated on the need for and importance of maintaining their OSSF system. - ANSWER-TRUE Onsite sewage facilities (OSSF) have been regulated statewide since - ANSWER- 1989 The state agency responsible for regulating OSSF systems is - ANSWER-TCEQ (Texas Commission on Environmental Quality) The first regulation of OSSF systems in Texas was done by - ANSWER-local governments
The intent of the HB1875 law is that most of the regulation of OSSF systems be done by _____________ government. - ANSWER-local An official inspector of OSSF systems is a - ANSWER-(DR) Designated Representative A local government with the authority to regulate septic systems is termed an - ANSWER-authorized agent A person legally constructing OSSF systems as a business is an______________ and must be licensed by __________. - ANSWER-installer, TCEQ Penalties for violating OSSF regulations fall under the following headings: - ANSWER-~Criminal ~Civil ~Administrative A professional designer is either a ________________________ or a _______________________ with experience in the design of ___________ systems. - ANSWER-Professional Engineer (PE), Registered Sanitarian (RS), OSSF Installers must renew their registration (how often) - ANSWER-every 3 years The following are the major steps in the OSSF permitting process: - ANSWER-~Site and soil evaluation ~Selection of type of OSSF system
~Gravelless pipe List eight examples of work clothes that are important personal protective equipment - ANSWER-eye protection, hard hats, ear plugs, respiratory, gloves, foot & leg skin and clothing Criminal offenses are misdemeanors punishable in accordance with________________ of the Texas Water Code and ___________________ of the Texas Penal Code. - ANSWER-Chapter 7, Chapter 12. Skin protection should be used to protect against ______________, and___________________injuries,__________________agents, ___________________), and __________________________________extremes.
- ANSWER-mechanical, physical, biological, chemical and temperature Which of the following is NOT an effective method for warning approaching traffic about a work site? - ANSWER-construction equipment Which of the following is NOT a common cause of trench and excavation cave-ins?
- ANSWER-Sloping the sides of a cut to the "angle of repose" According to the Texas one-Call-Law, how far ahead must a person call a One Call Notification Center before digging 16 inches or deeper using mechanical equipment? - ANSWER-2 working days
Which of the following is NOT a good hygienic practice to follow when working around waste water or septage? - ANSWER-When washing work clothes with the family wash, remember to double rinse Workers exposed to wastewater need to consult their physician only about immunization to typhoid. - ANSWER-False What are the potential hazards associated with working in a confined space? - ANSWER-~Lack of natural VENTALATION ~OXEGEN deficient atmosphere ~FLAMMABLE EXPLOSIVE atmosphere ~Unexpected release of hazardous ENERGY ~Dangerous concentrations of AIR CONTANAMENTS ~Physical BARRIERS or limitations to MOVEMENT ~INSTABILITY of stored products Over ___ of workers who die in confined spaces are attempting to recue other workers. - ANSWER-50% Which of the following is NOT a characteristic of confined space? - ANSWER-Has natural air movement which provides a good quality atmosphere List the symptoms of asphyxiation. - ANSWER-headache drowsiness dizziness
Viruses are responsible for diseases such as___________________________. - ANSWER-poliomyelitis and infectious hepatitis A solid that can be filtered out of the wastewater is__________________________. - ANSWER-suspended solid Parasites (helminths) found in untreated waste water include__________________________. - ANSWER-hookworms, round worms and tapeworms Nitrogen or nitrate removal in soil occurs by__________________. - ANSWER- vegetation uptake In wastewater, compounds containing carbon and other elements, particularly hydrogen and oxygen are ______________________. - ANSWER-organic Where would an anaerobic bacteria NOT be found? - ANSWER-Activated sludge Which of the following statements is true? - ANSWER-Dissolved oxygen in waste water indicates freshness Which of the following descriptions is NOT a characteristic of organic materials in domestic waste water? - ANSWER-Include sand, grit and minerals Physical removal of bacteria by straining occurs when______________________. - ANSWER-the pores in the soil are large
The factors influencing the survival of bacteria in soil are_________________. - ANSWER-moisture, temperature, pH and organic matter The treatment device providing the least or poorest treatment of domestic wastewater would be the__________________. - ANSWER-septic tank The disposal system that might be considered in a tight clay soil soil would be the_______________. - ANSWER-drip or spray irrigation Which of the following criteria would NOT be an indication that the on-site system is working properly? - ANSWER-Ninety-nine percent adequate treatment is attained before wastewater reaches ground water or surface water Adsorption is a mechanical process of soil that_______________. - ANSWER-will occur in water with high hardness and neutral or slightly acidic pH The septic tank might better be termed a pretreatment process, since more treatment occurs in the ______. - ANSWER-soil Standard disposal systems include all of the following except______________. - ANSWER-gravelless pipe (proprietary) Nonstandard disposal systems include all of the following except______________.
Lots served by individual wells should be a minimum of___________________ acre in size for a septic system. - ANSWER-one Lots served by a public water supply shoild be a minumum of _____________________acre in size for a septic system. - ANSWER-one half When minimum lot size cannot be met, an on-site system must be deigned by a _______________________________or a_________________________________. - ANSWER-Registered professional engineer, registered sanitarian When evaluating a topography site,_________________ and potential for __________________ are key considerations. - ANSWER-slope, flooding Soil _________________or ___________________ in combination with lot __________________ is critical in deciding if a septic system is feasible. - ANSWER-texture, type, size The most critical soil characteristics are the ability to ______________________ wastewater. - ANSWER-absorb Most on-site sewage facilities use the soil to _____________________and _______________wastewater. - ANSWER-absorb, treat ___________________ treatment occurs in the soil than in the septic tank. - ANSWER-More
Disease causing organisms are ___________________________________________________ as wastewater moves through the soil. - ANSWER-treated, removed or destroyed Based upon OSSF rules, three examples of soil are suitable for a standard absorptive drainfield. Include a brief description of each. - ANSWER-a. Class 1b = Description "sandy" b. Class 2 = Description "coarse loamy" c. Class 3 = Description "fine loamy to sandy clay" The most permeable soil texture of "sandy", "coarse loamy" or "fine loamy to sandy clay" would be__________________________. - ANSWER-sandy Mottled soil, particularly with bright and grey variations, is often indicative of ____________________________________________ soil. - ANSWER-seasonally saturated Soil absorption trenches can be located no closer than __________feet from a private water supply and ______________ feet from the building. - ANSWER-100' from the water supply, 5' from the building No part of a septic tank can be closer than ___________ to a property line. - ANSWER-5 feet
Carbohydrates, proteins, fats. - ANSWER-Organic Material Stabilizes first - ANSWER-Carbs Are more difficult to stabilize. - ANSWER-Proteins Are the most difficult to stabilize. - ANSWER-Fats Length x Width - ANSWER-Area A=πr² - ANSWER-Area Formula Length x Width x Height - ANSWER-Volume V=πr² x H(height) - ANSWER-Volume Formula Length x Width x Height x 7.48 - ANSWER-Capacity C=πr²xHx7.48 - ANSWER-Capacity Formula 50feet - ANSWER-Public Water Wells from Tanks
150feet - ANSWER-Public Water Wells from soil absorption systems, unlined et beds 150feet - ANSWER-Public Water Wells from Lined Evapotranspiration. 50feet - ANSWER-Public Water Wells Sewer pipe with water tight joints. 150feet - ANSWER-Public Water Wells from Surface Application (Edge of Spray Area) 150feet - ANSWER-Public Water Wells from Surface Application (Edge of Spray Area) 150feet - ANSWER-Public Water Wells from Drip Irrigation 10 feet - ANSWER-Public Water Supply Lines from Tanks 10 feet - ANSWER-Public Water Supply Lines from lined evapotranspiration beds 10 feet - ANSWER-Public Water Supply Lines from sewer pipe with watertight joints 10 feet - ANSWER-Public Water Supply Lines from surface application (Edge of spray area)
10 feet squared except at connection to structure - ANSWER-Private Water Lines from Sewer Pipes with watertight joints No seperation distances. - ANSWER-Private Water Lines from Surface application (Edge of Spray Area) 10 feet - ANSWER-Private Water Lines from Drip Irrigation lines 50 feet - ANSWER-Pressure Cemented Wells from tanks 50 feet - ANSWER-Pressure Cemented Wells from soil absorption systems & unlined ET beds 50 feet - ANSWER-Pressure Cemented Wells from Lined evapotranspiration beds 20 feet - ANSWER-Pressure Cemented Wells from sewer pipes with watertight joints 50 feet - ANSWER-Pressure Cemented Wells from Surface Application (edge of spray area) 50 feet - ANSWER-Pressure Cemented Wells from drip irrigation lines 50 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from tanks
75 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from soil absorption systems & unlined ET beds 50 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from lined evapotranspiration beds 20 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from sewer pipes with watertight joints 50 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from surface application (Edge of spray Area) 25 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from drip irrigation when Ra<0. 75 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from drip irrigation when Ra>0. 50 feet - ANSWER-Streams,Ponds,Lakes, Rivers, Creeks(Measured from normal pool elevation and Water level) from drip irrigation with secondary treatment and disinfection 5 feet - ANSWER-Foundations, Buildings, Surface Improvements,Property Lines, Swimming Pools and Other structures from tanks
