Scientific Investigations Report 2007–5237
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5237
Figure 16. Historical nitrate loading from on-site wastewater systems and eight nitrate loading scenarios tested with the study-area model.
See table 6 for scenario descriptions. (mg/L, milligram per liter; TDC, transferable development credit.)
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2007/5237
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