Page 1 of 15
NPDES LEVEL 1A PRACTICE TEST COMPLETE
(50) CURRENT TESTING QUESTIONS AND
DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
NPDES
Prepare with confidence using this NPDES Level 1A Practice
Test, designed to assess knowledge of wastewater and
environmental compliance standards. It focuses on permit
requirements, water quality regulations, monitoring processes,
and pollution control practices. The exam strengthens
understanding of regulatory compliance and environmental
protection. Suitable for environmental technicians and
wastewater treatment trainees.
A slope gradient of 25% (4:1) would indicate that in a
horizontal length of 100 feet, the vertical rise would be
______ feet.
A) 2.5
B) 12.5
C) 25
D) 4 ✓ ✓ ...... ANSWER ....... C) 25
, Page 2 of 15
As rain falls to the earth, what is the very first function of
vegetation?
A) It reduces detachment
B) It increases infiltration
C) It absorbs rain drop impact
D) Roots hold soil in place ✓ ✓ ...... ANSWER ....... A) It
reduces detachment
Because of the likelihood of thunderstorms which is the
worst month to schedule land disturbing activities?
A) April
B) July
C) September
D) October ✓ ✓ ...... ANSWER ....... B) July
Which of the following is not a stage in Erosion and
Sedimentation?
A) Detachment
B) Solubility
C) Transport
NPDES LEVEL 1A PRACTICE TEST COMPLETE
(50) CURRENT TESTING QUESTIONS AND
DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
NPDES
Prepare with confidence using this NPDES Level 1A Practice
Test, designed to assess knowledge of wastewater and
environmental compliance standards. It focuses on permit
requirements, water quality regulations, monitoring processes,
and pollution control practices. The exam strengthens
understanding of regulatory compliance and environmental
protection. Suitable for environmental technicians and
wastewater treatment trainees.
A slope gradient of 25% (4:1) would indicate that in a
horizontal length of 100 feet, the vertical rise would be
______ feet.
A) 2.5
B) 12.5
C) 25
D) 4 ✓ ✓ ...... ANSWER ....... C) 25
, Page 2 of 15
As rain falls to the earth, what is the very first function of
vegetation?
A) It reduces detachment
B) It increases infiltration
C) It absorbs rain drop impact
D) Roots hold soil in place ✓ ✓ ...... ANSWER ....... A) It
reduces detachment
Because of the likelihood of thunderstorms which is the
worst month to schedule land disturbing activities?
A) April
B) July
C) September
D) October ✓ ✓ ...... ANSWER ....... B) July
Which of the following is not a stage in Erosion and
Sedimentation?
A) Detachment
B) Solubility
C) Transport
