m |
m |
||
Line 12: | Line 12: | ||
<tr> | <tr> | ||
<td>Chloride</td> | <td>Chloride</td> | ||
− | <td>Salts applied to roads and parking lots during the winter | + | <td>Salts applied to roads and parking lots during the winter. Natural sources include mineral dissolution |
</td> | </td> | ||
</tr> | </tr> | ||
Line 26: | Line 26: | ||
<tr> | <tr> | ||
<td>Manganese</td> | <td>Manganese</td> | ||
− | <td>Found naturally in sediment and rocks | + | <td>Found naturally in sediment and rocks. Anthropogenic sources include mining waste, industrial waste, automobile parts and fluids</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Nickel</td> | <td>Nickel</td> | ||
− | <td>Naturally occurring | + | <td>Naturally occurring. Anthropogenic sources include stainless steel and alloy products, mining, refining, automobile parts and fluids</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>Cadmium</td> | <td>Cadmium</td> | ||
− | <td>Small amounts are naturally occurring | + | <td>Small amounts are naturally occurring. Anthropogenic sources include industrial discharge, mining waste, automobile parts and fluids</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
Line 50: | Line 50: | ||
<tr> | <tr> | ||
<td>PAHs<sup>2</sup></td> | <td>PAHs<sup>2</sup></td> | ||
− | <td>Auto emissions; elicit | + | <td>Auto emissions; elicit discharges; asphalt pavement (driveways, roadways and parking lots) with coal tar sealants<sup>3</sup></td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
Line 61: | Line 61: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Microbes (including fecal coliform, E. coli, and pathogens)</td> |
<td>Domestic sewage; animal waste; plant or soil material</td> | <td>Domestic sewage; animal waste; plant or soil material</td> | ||
</tr> | </tr> |
Common pollutants of concern and sources in stormwater runoff. Adapted from USGS, 2014.
Link to this table.
Contaminant | Contaminant source1 |
---|---|
Nitrogen | Naturally occurring from vegetation decomposition. Anthropogenic sources include fertilizers, farm-animal waste, faulty septic systems |
Chloride | Salts applied to roads and parking lots during the winter. Natural sources include mineral dissolution |
Copper | Industrial and domestic waste, mining, mineral leaching, automobile parts and fluids |
Zinc | Industrial waste; automobile parts and fluids |
Manganese | Found naturally in sediment and rocks. Anthropogenic sources include mining waste, industrial waste, automobile parts and fluids |
Nickel | Naturally occurring. Anthropogenic sources include stainless steel and alloy products, mining, refining, automobile parts and fluids |
Cadmium | Small amounts are naturally occurring. Anthropogenic sources include industrial discharge, mining waste, automobile parts and fluids |
Chromium | Old mining operations; fossil-fuel combustion; mineral leaching; automobile parts and fluids |
Pesticides | Residential use of lawn care products; commercial landscaping; animal wastes; municipal right-of-ways; agriculture; feedlots |
Cyanide | Road salt; fertilizer production |
PAHs2 | Auto emissions; elicit discharges; asphalt pavement (driveways, roadways and parking lots) with coal tar sealants3 |
VOCs2 | Crude oil; insecticides; varnishes; paints; gasoline products; degreasers; municipal maintenance activities |
Oil and grease | Gasoline products; plastics; dyes; rubbers; polishes; solvents; crude oil; insecticides; inks; varnishes; paints; disinfectants; paint removers; degreasers; automobile fluids |
Microbes (including fecal coliform, E. coli, and pathogens) | Domestic sewage; animal waste; plant or soil material |
1The list of sources is for stormwater runoff only
2PAHs=polyaromatic hydrocarbons; VOCs=volatile organic compounds
3MPCA, 2014
Source: USGS, 2014, with permission