To help diagnose generalized anxiety disorder, your health provider may: 1  Do a physical exam to look for signs that your anxiety might be linked to an underlying medical condition. 2  Order blood or urine tests or other tests, if a medical condition is suspected.
Runoff that occurs on the ground surface before reaching a channel is also called a nonpoint source. If a nonpoint source contains man-made contaminants, or natural forms of pollution (such as rotting leaves) the runoff is called nonpoint source pollution.
This term does not include agricultural storm water discharges and return flows from irrigated agriculture.. There are important differences between point source pollution and NPS pollution. There are many more nonpoint sources than there are point sources, and they are more discrete than nonpoint sources. Furthermore, nonpoint source discharges are not always easily observed, and monitoring nonpoint pollution can be costly.