To help ensure LID BMPs sustain healthy vegetation cover while not contributing substantially to nutrient loading of receiving waters, the quantity of '''extractable (i.e., available) phosphorus''' in the soil component needs to be measured and compared to design specifications or acceptance criteria.
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To help ensure LID BMPs sustain healthy vegetation cover while not contributing substantially to nutrient loading of receiving waters, the quantity of '''extractable (i.e., available) phosphorus''' in the filter media or growing media (i.e., soil) component needs to be measured and compared to design specifications or acceptance criteria.