Scientific Investigations Report 2007–5186
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5186
Table 5. Industrial categories contributing to total nitrogen and total phosphorus loads in the Columbia and Puget Sound basins.
[From documentation of Phase I and Phase II activities and U.S. Environmental Protection Agency Permit Compliance System. Abbreviation: SIC, standard industrial classification]
| Industrial category | SIC code |
|---|---|
| Plastics materials and resins | 2821 |
| Nitrogenous fertilizers | 2873 |
| Primary aluminum | 3334 |
| Wet corn milling | 2046 |
| Blast furnaces and steel mills | 3312 |
| Industrial inorganic chemicals, | 2819 |
| Petroleum refining | 2911 |
| Meat packing plants | 2011 |
| Paper mills | 2621 |
| Pulp mills | 2611 |
| Paints and allied products | 2851 |
| Primary nonferrous metals | 3339 |
| Paperboard mills | 2631 |
| Poultry slaughtering and processing | 2015 |
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2007/5186
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