After the revised drawing is issued, where should silt fence normally be placed?
Correct Answer
C) Downslope of disturbed soil before sediment leaves the site
Downslope of disturbed soil before sediment leaves the site is the controlling requirement: the distractors are related-looking contract or field terms, but they do not match the cited requirement for review item 85.
Why This Is the Correct Answer
Downslope of disturbed soil before sediment leaves the site is the controlling requirement
Why the Other Options Are Wrong
Option A: Base the silt fence response on across active vehicle gates only
Choice A gives Across active vehicle gates only. Its specific error: the action skips the timing, documentation, or field-control step needed for Silt fence.
Option B: Select inside finished rooms for silt fence
Choice B (Inside finished rooms) is rejected because it leaves out the controlling Silt fence result.
Option D: Use at roof drains as the stated limit in silt fence
The trap in D is At roof drains only. That selection is wrong because the option delays or omits the controlling step.
Memory Technique
File silt fence under a pay line: condition first, number or duty second, answer Downslope of disturbed soil before sediment leaves the site.
Reference Hint
Open Developing Your Stormwater Pollution Prevention Plan, EPA 833-R-06-004; use the index entry or section for "Sediment barrier placement" to confirm that Downslope of disturbed soil before sediment leaves the site is the controlling requirement
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