Because the real quench distance is only the minimum figure @ TDC (which is not the point of maximum risk), and there is measurable pumping loss getting those few molecules in and out of that small space, and as the clearance expands the loss is reduced.
Why is nonpoint source pollution potentially more harmful than point source pollution? a. Nonpoint source pollution disrupts the water cycle. b. Nonpoint source pollution is difficult to regulate. c. Nonpoint source pollution comes from more than one source. d. Nonpoint source pollution is more damaging to living organisms than point source pollution. Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification.
Point Source Pollution. Point source pollution is defined by the U.S. Environmental Protection Agency (EPA) as âany single identifiable source of pollution from which pollutants are discharged, such as a pipe...â. Examples of point sources include:1  discharges from wastewater treatment plants; 2  operational wastes from industries; and.oint Source Pollution. Point source pollution is defined by the U.S. Environmental Protection Agency (EPA) as âany single identifiable source of pollution from which pollutants are discharged, such as a pipe...â. Examples of point sources include: