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− | <font size=3>'''Event mean concentrations for total | + | <font size=3>'''Event mean concentrations for total phosphorus.</font size><br> |
− | Link to this [[Event mean concentrations for total | + | Link to this [[Event mean concentrations for total phosphorus|table]] |
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− | [[ | + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Pollutant loading, concentrations, and characteristics]] |
+ | [[Category:Level 2 - Pollutants/Phosphorus]] | ||
+ | [[Category:Level 2 - Pollutants/Concentrations, export, loads]] | ||
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Event mean concentrations for total phosphorus.
Link to this table
Land cover/land use | Range (mg/L) | Recommended value (mg/L) | Notes |
---|---|---|---|
Commercial | 0.20 - 0.34 | 0.200 | If applicable to models being used, adjust curve numbers/runoff coefficients when calculating loads |
Industrial | 0.23 - 0.55 | 0.235 |
|
Residential | 0.26 - 0.38 | 0.325 | Concentrations vary widely depending on local conditions |
High-density/Multi-family residential | 0.28 - 0.40 | Calculate1 |
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Medium density residential | 0.18 - 0.40 | Calculate1 |
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Low density residential | 0.24 - 0.40 | Calculate1 |
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Freeways/transportation | 0.25 - 0.45 | 0.280 |
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Mixed | 0.16 - 0.84 | 0.290 |
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Parks and recreation | Use value for open space or calculate |
|
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Open space | 0.12 - 0.31 | 0.190 | |
Conventional roof | 0.01 - 0.20 | 0.030 | |
Institutional | 0.14 - 0.422 | See note |
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Forest/shrub/grassland | 0.03 - 0.45 | 0.090 | Concentrations are likely to vary with season in areas with fall leaf drop |
Open water and wetlands | see Notes (next column) |
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Cropland (row crops) | 0.126-1.348 | 2 | Median from our review = 0.533 |
Pasture | 0.35-0.45 | 2 |
1The link takes you to information on calculating event mean concentrations for areas with multiple land uses.
2Our literature review was not extensive enough to warrant a specific recommend emc for this land use
This page was last edited on 23 March 2023, at 16:45.