PMT 108 PRINCIPLES OF WATER TEST 4
COMPREHENSIVE EXAM 2026 QUESTIONS
WITH ANSWERS GUARANTEED TO PASS
◉ Required pieces of equipment at each lifeguard station in natural
bathing areas. Answer: - Rescue tube or can
- Long light reaching pole or shepherd's crook
- Ring buoy with throwing line
- Whistle
- Bull horn
◉ Marine hazard physical conditions. Answer: - Undertow
- Strong currents
- Sharp coral reef
- Discarded debris
◉ Centrifugation. Answer: A process that uses the force developed by
rotation of cylindrical drum or bowl to separate the sludge solids from
the liquid
,◉ Army regulation (AR) that covers Environmental Protection and
Enhancement. Answer: AR 200-1
◉ Swimming area allowance. Answer: 50 square feet (50 square feet of
beach per person)
◉ Animal urine result. Answer: Leptospirosis
◉ Salt water predators that present as Marine hazards. Answer: - Sharks
- Portuguese man of war
- Sting ray
◉ Buffer. Answer: A chemical compound that resists changes in
acidity/alkalinity of pool water by neutralizing acids and bases
◉ Pool status if 2 out of 3 repeat samples are negative. Answer:
Bacteriologically satisfactory
◉ Action after resample exceeds standards. Answer: Close facility until
cause is determined. Superchlorinate if necessary.
◉ Formula for calculating gauge pressure. Answer: 0.433 x height of
water in feet (h)
,◉ Formula for calculating absolute pressure. Answer: Gauge pressure +
14.7 psig
◉ Raw sludge. Answer: Sludge obtained from plain sedimentation tanks
is essentially the settleable solids in the raw sewage, can become septic
and cause offensive odors
◉ Thickening. Answer: An economically effective process to increase
the sludge's concentration and decrease the sludge's volume by removing
some free water to the extent where the sludge remains in the fluid state
◉ Primary treatment sludge contains. Answer: 65% organic material
◉ Secondary treatment sludge contains. Answer: 90% organic material
◉ Chlorination. Answer: Chlorine is added to kill pathogens
◉ Contact time and chlorine residual. Answer: Contact time is 15-30
minutes, chlorine residual 0.5-1.0 ppm
◉ Dechlorination. Answer: Elimination of Chlorine
, ◉ Wastewater treatment Purpose. Answer: Protect communities, Prevent
contamination, Maintain clean water, Conserve water for industrial and
agricultural use
◉ Black Water. Answer: Human body wastes from toilets, urinals and
soil drains; also referred to as sewage
◉ Grey water. Answer: From bathing and laundry
◉ The clean water act. Answer: 1972
◉ All WWTPs should have. Answer: Secondary treatment with 85%
BOD and TSS
◉ Any entity that discharge wastewater. Answer: Must have NPDES
permit
◉ Army policy. Answer: AR 200-1 Environmental protection and
enhancement...Implements federal, State and local environmental laws
◉ TM 5-814-3. Answer: Domestic wastewater treatment.....Provides
general information
◉ Local commanders. Answer: Obtaining discharge permits
COMPREHENSIVE EXAM 2026 QUESTIONS
WITH ANSWERS GUARANTEED TO PASS
◉ Required pieces of equipment at each lifeguard station in natural
bathing areas. Answer: - Rescue tube or can
- Long light reaching pole or shepherd's crook
- Ring buoy with throwing line
- Whistle
- Bull horn
◉ Marine hazard physical conditions. Answer: - Undertow
- Strong currents
- Sharp coral reef
- Discarded debris
◉ Centrifugation. Answer: A process that uses the force developed by
rotation of cylindrical drum or bowl to separate the sludge solids from
the liquid
,◉ Army regulation (AR) that covers Environmental Protection and
Enhancement. Answer: AR 200-1
◉ Swimming area allowance. Answer: 50 square feet (50 square feet of
beach per person)
◉ Animal urine result. Answer: Leptospirosis
◉ Salt water predators that present as Marine hazards. Answer: - Sharks
- Portuguese man of war
- Sting ray
◉ Buffer. Answer: A chemical compound that resists changes in
acidity/alkalinity of pool water by neutralizing acids and bases
◉ Pool status if 2 out of 3 repeat samples are negative. Answer:
Bacteriologically satisfactory
◉ Action after resample exceeds standards. Answer: Close facility until
cause is determined. Superchlorinate if necessary.
◉ Formula for calculating gauge pressure. Answer: 0.433 x height of
water in feet (h)
,◉ Formula for calculating absolute pressure. Answer: Gauge pressure +
14.7 psig
◉ Raw sludge. Answer: Sludge obtained from plain sedimentation tanks
is essentially the settleable solids in the raw sewage, can become septic
and cause offensive odors
◉ Thickening. Answer: An economically effective process to increase
the sludge's concentration and decrease the sludge's volume by removing
some free water to the extent where the sludge remains in the fluid state
◉ Primary treatment sludge contains. Answer: 65% organic material
◉ Secondary treatment sludge contains. Answer: 90% organic material
◉ Chlorination. Answer: Chlorine is added to kill pathogens
◉ Contact time and chlorine residual. Answer: Contact time is 15-30
minutes, chlorine residual 0.5-1.0 ppm
◉ Dechlorination. Answer: Elimination of Chlorine
, ◉ Wastewater treatment Purpose. Answer: Protect communities, Prevent
contamination, Maintain clean water, Conserve water for industrial and
agricultural use
◉ Black Water. Answer: Human body wastes from toilets, urinals and
soil drains; also referred to as sewage
◉ Grey water. Answer: From bathing and laundry
◉ The clean water act. Answer: 1972
◉ All WWTPs should have. Answer: Secondary treatment with 85%
BOD and TSS
◉ Any entity that discharge wastewater. Answer: Must have NPDES
permit
◉ Army policy. Answer: AR 200-1 Environmental protection and
enhancement...Implements federal, State and local environmental laws
◉ TM 5-814-3. Answer: Domestic wastewater treatment.....Provides
general information
◉ Local commanders. Answer: Obtaining discharge permits
