WASTEWATER CLASS B TEXAS UPDATED ACTUAL
QUESTIONS AND ANSWERS GRADED A+
✔✔The Texas Water Code establishes the protection of water quality and quantity of
the state by - ✔✔setting stream standards, issues permits for discharges, identifies non-
point source controls, and establishes water reuse.
✔✔The wastewater plant operator is primarily responsible for - ✔✔treating wastewater
discharged into the community
✔✔Chapter ___ of the Texas Water Code is the state law controlling water pollution and
___ authority to control discharges in Texas - ✔✔Chapter 26 and Texas Commission of
Environmental Quality
✔✔The Texas Commission on Environmental Quality can revoke an operator's license if
the operator - ✔✔causes permit violation, falsifies records or neglects their duty
✔✔If accidental discharge, bypass, or spill (SSO) of wastewater occurs the responsible
party MUST notify TCEQ regional offices within ____ hours - ✔✔24
✔✔Aerobic Bacteria require_____ in the water for their metabolism - ✔✔oxygen
✔✔Anaerobic Bacteria _____ live with O2 present in the water for their metabolism -
✔✔cannot
✔✔Facultative Bacteria require__________in the water for their metabolism - ✔✔either
aerobic or anaerobic conditions
✔✔Chemical characteristics of sewage include - ✔✔solids, greases, dissolved oxygen,
O2 Demand, pH, and gasses
✔✔_________removes Total Suspended Solids (TSS) - ✔✔filtration
✔✔Inorganic solids include - ✔✔sand, grit and minerals
✔✔Organic solids include - ✔✔organic materials from plants, animals or humans
✔✔A good plant influent pH is about - ✔✔7.2
✔✔Dangerous gases are produced during bacterial decomposition of organics in
wastewater. The main gasses are - ✔✔Hydrogen sulfide, carbon dioxide and methane
, ✔✔The majority of Dissolved Oxygen in raw sewage comes from - ✔✔Potable Drinking
Water
✔✔Each person contributes approximately ______ lbs of BOD to the system daily. -
✔✔0.17
✔✔Sources of waste water include - ✔✔domestic, storm water, commercial, food
processing, agricultural and industrial
✔✔A sewer manhole provides access into the system for cleaning or service. A
manhole is located - ✔✔at changes in alignment, diameter, grade, direction and
intersection
✔✔New manholes must have an inside diameter of at least ______ feet and the entry
access must be at least ____inches. - ✔✔4 feet and 24 inches
✔✔In the past ____ was used to construct manholes. This product is prohibited for
construction or grading today - ✔✔brick and mortar
✔✔Verified clay and Poly Vinyl Chloride (PVC) are the most common pipe materials
used for sewer lines but other materials are available such as - ✔✔ductile iron, cast
iron, acrylontrile butadiene styrene (ABS) Concrete, polyethylene & asbestos concrete
✔✔Whenever wastewater cannot flow to the treatment plant by _____ a _____ is
typically used - ✔✔gravity/ lift station
✔✔The primary cause of stoppage in a collection system is _____ and _____ -
✔✔grease/roots
✔✔The _____pump is most commonly used in a lift station - ✔✔centrifugal
✔✔A centrifugal pump must be ____ or it will not pump - ✔✔primed
✔✔______ gas is very toxic and deadens the sense of ______ - ✔✔Hydrogen
Sulifide/smell
✔✔______ gas is colorless, odorless and heavier than air - ✔✔Methane
✔✔______ are the smallest , most numerous, and most important of the activated
sludge microorganisms - ✔✔bacteria
✔✔Organic loading refers to the pounds per day of ____ per acre feet or 1,000 cubic
feet of filter media - ✔✔BOD
QUESTIONS AND ANSWERS GRADED A+
✔✔The Texas Water Code establishes the protection of water quality and quantity of
the state by - ✔✔setting stream standards, issues permits for discharges, identifies non-
point source controls, and establishes water reuse.
✔✔The wastewater plant operator is primarily responsible for - ✔✔treating wastewater
discharged into the community
✔✔Chapter ___ of the Texas Water Code is the state law controlling water pollution and
___ authority to control discharges in Texas - ✔✔Chapter 26 and Texas Commission of
Environmental Quality
✔✔The Texas Commission on Environmental Quality can revoke an operator's license if
the operator - ✔✔causes permit violation, falsifies records or neglects their duty
✔✔If accidental discharge, bypass, or spill (SSO) of wastewater occurs the responsible
party MUST notify TCEQ regional offices within ____ hours - ✔✔24
✔✔Aerobic Bacteria require_____ in the water for their metabolism - ✔✔oxygen
✔✔Anaerobic Bacteria _____ live with O2 present in the water for their metabolism -
✔✔cannot
✔✔Facultative Bacteria require__________in the water for their metabolism - ✔✔either
aerobic or anaerobic conditions
✔✔Chemical characteristics of sewage include - ✔✔solids, greases, dissolved oxygen,
O2 Demand, pH, and gasses
✔✔_________removes Total Suspended Solids (TSS) - ✔✔filtration
✔✔Inorganic solids include - ✔✔sand, grit and minerals
✔✔Organic solids include - ✔✔organic materials from plants, animals or humans
✔✔A good plant influent pH is about - ✔✔7.2
✔✔Dangerous gases are produced during bacterial decomposition of organics in
wastewater. The main gasses are - ✔✔Hydrogen sulfide, carbon dioxide and methane
, ✔✔The majority of Dissolved Oxygen in raw sewage comes from - ✔✔Potable Drinking
Water
✔✔Each person contributes approximately ______ lbs of BOD to the system daily. -
✔✔0.17
✔✔Sources of waste water include - ✔✔domestic, storm water, commercial, food
processing, agricultural and industrial
✔✔A sewer manhole provides access into the system for cleaning or service. A
manhole is located - ✔✔at changes in alignment, diameter, grade, direction and
intersection
✔✔New manholes must have an inside diameter of at least ______ feet and the entry
access must be at least ____inches. - ✔✔4 feet and 24 inches
✔✔In the past ____ was used to construct manholes. This product is prohibited for
construction or grading today - ✔✔brick and mortar
✔✔Verified clay and Poly Vinyl Chloride (PVC) are the most common pipe materials
used for sewer lines but other materials are available such as - ✔✔ductile iron, cast
iron, acrylontrile butadiene styrene (ABS) Concrete, polyethylene & asbestos concrete
✔✔Whenever wastewater cannot flow to the treatment plant by _____ a _____ is
typically used - ✔✔gravity/ lift station
✔✔The primary cause of stoppage in a collection system is _____ and _____ -
✔✔grease/roots
✔✔The _____pump is most commonly used in a lift station - ✔✔centrifugal
✔✔A centrifugal pump must be ____ or it will not pump - ✔✔primed
✔✔______ gas is very toxic and deadens the sense of ______ - ✔✔Hydrogen
Sulifide/smell
✔✔______ gas is colorless, odorless and heavier than air - ✔✔Methane
✔✔______ are the smallest , most numerous, and most important of the activated
sludge microorganisms - ✔✔bacteria
✔✔Organic loading refers to the pounds per day of ____ per acre feet or 1,000 cubic
feet of filter media - ✔✔BOD
