SWM DEQ Exam (2026 Edition) | Full
Practice Questions with Confirmed
Answers | 100% Accurate | Grade A+
‣ At what % impervious cover are streams substantially affected?
Answer: 25%
‣ what is the site-based load limit for water quality? Answer: 0.41
lbs/acre/yr total phosphorous
‣ Virginia Runoff Reduction Method- method of load calculations
Answer: load calculations based on land cover type and soil type.
‣ what must happen to potentially harmful sheet flow runoff? Answer:
Must be diverted to stormwater conveyance system.
‣ SWM ponds must be able to convey water safely up to what level
storm event? Answer: must be able to safely convey up to a 100 yr
storm.
‣ Define LDA Answer: Land disturbing activity; any man-made change
to the land surface that potentially changes its runoff characteristics;
includes clearing, grading, and excavation.
Practice Questions with Confirmed
Answers | 100% Accurate | Grade A+
‣ At what % impervious cover are streams substantially affected?
Answer: 25%
‣ what is the site-based load limit for water quality? Answer: 0.41
lbs/acre/yr total phosphorous
‣ Virginia Runoff Reduction Method- method of load calculations
Answer: load calculations based on land cover type and soil type.
‣ what must happen to potentially harmful sheet flow runoff? Answer:
Must be diverted to stormwater conveyance system.
‣ SWM ponds must be able to convey water safely up to what level
storm event? Answer: must be able to safely convey up to a 100 yr
storm.
‣ Define LDA Answer: Land disturbing activity; any man-made change
to the land surface that potentially changes its runoff characteristics;
includes clearing, grading, and excavation.