NPDES Level 1A Practice Test
2026 Exam Questions and
Verified Answers | Already
Graded A+
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
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
2026 Exam Questions and
Verified Answers | Already
Graded A+
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
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
