A trench pump is discharging cloudy water toward a storm drain. What should be done?
Correct Answer
B) Route discharge through approved sediment controls or a settling/filtering method.
Turbid dewatering discharge must be treated or routed through approved controls.
Why This Is the Correct Answer
Turbid dewatering discharge must be treated or routed through approved controls.
Why the Other Options Are Wrong
Option A: Discharge faster before inspection
Choice A gives Discharge faster before inspection. Its specific error: it leaves out the controlling Dewatering turbid water result: Route discharge through approved sediment controls or a settling/filtering method.
Option C: Pump into the sanitary sewer without approval
In site construction, Pump into the sanitary sewer without approval. is the wrong selection for Dewatering turbid water: it leaves the work at an informal or incomplete stage, while Dewatering turbid water requires Route discharge through approved sediment controls or a settling/filtering method.
Option D: Ignore because water is from rain
The trap in D is Ignore because water is from rain. That selection is wrong because the option delays or omits the controlling step.
Memory Technique
Picture a switch on the jobsite; dewatering turbid water is solved by the action that leads to Route discharge through approved sediment controls or a settling/filtering method.
Reference Hint
Open Developing Your Stormwater Pollution Prevention Plan, EPA 833-R-06-004, 2007; use the index entry or section for "EPA 833-R-06-004 - erosion and sediment controls" to confirm that Turbid dewatering discharge must be treated or routed through approved controls.
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