Description Usage Arguments Value Examples

View source: R/summary_functions.R

Compute the wasteload allocation (WLA) used for effluent limit calculation.

1 | ```
calc_WLA(criteria, background, Qrsw, Qeff)
``` |

`criteria` |
Limiting water quality criterion. Must be in same units as background argument. |

`background` |
Background pollutant concentration. Must be in same units as criteria argument. |

`Qrsw` |
Upstream limiting/design receiving water flowrate. Must be in same units as Qeff argument. Flow arguments may be entered in ratio form. |

`Qeff` |
Effluent limiting/design flowrate. Must be in same units as Qrsw argument. Flow arguments may be entered in ratio form. |

WLA as numeric value in same units as criteria and background.

1 2 3 4 5 6 7 8 9 | ```
# WLA for pollutant with 2 ug/L acute criteria and upstream receiving water concentration
# of 0.1 ug/L. The critical flows are 3 MGD (1Q10) and 0.5 MGD (max daily flow).
calc_WLA(2, 0.1, 3, 0.5)
# When using dilution credits, put Qrsw and Qeff in terms of the dilution ratio (D).
D = 7 # Assume a jurisdiction that uses D = (Qrsw + Qeff) / Qeff
Qeff = 1 # Equal to 1 since its the denominator of the ratio, or you can use the critical flow
Qrsw = D - 1 # Same as the expression (D * Qeff) - Qeff
calc_WLA(2, 0.1, Qrsw = D - 1, Qeff = 1)
``` |

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