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<title>PEC_sw_drainage_UK_ini. pfm 0.2-4</title>
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Johannes Ranke
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<h1>Calculate initial predicted environmental concentrations in surface water due to drainage using the UK method</h1>
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<h2>Usage</h2>
<pre><div>PEC_sw_drainage_UK_ini(rate, interception = 0, Koc, latest_application = NULL, soil_DT50 = NULL, model = NULL, model_parms = NULL)</div></pre>
<h2>Arguments</h2>
<dl>
<dt>rate</dt>
<dd>Application rate in g/ha</dd>
<dt>interception</dt>
<dd>The fraction of the application rate that does not reach the soil</dd>
<dt>Koc</dt>
<dd>The sorption coefficient normalised to organic carbon in L/kg</dd>
<dt>latest_application</dt>
<dd>Latest application date, formatted as e.g. "01 July"</dd>
<dt>soil_DT50</dt>
<dd>Soil degradation half-life, if SFO kinetics are to be used</dd>
<dt>model</dt>
<dd>The degradation model to be used. Either one of "FOMC", "DFOP",
"HS", or "IORE", or an mkinmod object</dd>
<dt>model_parms</dt>
<dd>A named numeric vector containing the model parameters</dd>
</dl>
<div class="Value">
<h2>Value</h2>
<p><dl>
The predicted concentration in surface water in µg/L
</dl></p>
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<div class="Description">
<h2>Description</h2>
<p>This implements the method specified in the UK data requirements handbook and was checked against the spreadsheet
published on the CRC website</p>
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<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'>PEC_sw_drainage_UK_ini(150, Koc = 100)
</div>
<div class='output'>[1] 8.076923
</div></pre>
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<h2>Author</h2>
Johannes Ranke
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