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@@ -6,9 +6,34 @@ [](https://codecov.io/github/jranke/pfm) The R package **pfm** provides some utilities for fate modelling, including -simple PEC calculation routines and some routines for -dealing with FOCUS pesticide fate modelling tools (currently only TOXSWA cwa -and out files), made available under the GNU public license. +simple routines for calculating predicted environmental concentrations (PEC) +and some routines for dealing with FOCUS pesticide fate modelling tools made +available under the GNU public license. + +More specifically, **pfm** includes facilities for simple one-box modelling of +the [saw-tooth](https://pkgdown.jrwb.de/pfm/reference/sawtooth.html)-like +curves resulting from multiple repeated applications, for calculation +of [PEC soil](https://pkgdown.jrwb.de/pfm/reference/PEC_soil.html) based +on the 1997 SANCO guidance and the first tiers of the EFSA PEC soil guidance +from 2012 and 2015, as well as some functions for calculating [PEC surface +water](https://pkgdown.jrwb.de/pfm/reference/sawtooth.html). +The [PEC drift](https://pkgdown.jrwb.de/pfm/reference/PEC_sw_drift.html) +calculations can be based on the Rautmann drift percentiles published by JKI, +the exponential formulas published by Rautmann to inter- or extrapolate to arbitrary +distances, or on the integrated Rautmann formulas (integrated over the width of the +surface water body) used in FOCUS drift calculations. + +For PEC drainage calculations, the methods used by the [UK](https://pkgdown.jrwb.de/pfm/reference/PEC_drainage_UK.html), +by [Germany](https://pkgdown.jrwb.de/pfm/reference/PEC_sw_exposit_drainage.html) are implemented. +For runoff, the +[German](https://pkgdown.jrwb.de/pfm/reference/PEC_sw_exposit_runoff.html) method used +at tier 1 is available. + +The output of FOCUS TOXSWA calculations can be read in, plotted, and evaluated +using the [TOXSWA cwa](https://pkgdown.jrwb.de/pfm/reference/TOXSWA_cwa.html) class +giving maximum time weighted average concentrations and peak statistics way as +available when using the [EPAT](https://www.rifcon.com/en/downloads/software-2/) +tool. ## Installation |