*Select salt tolerant grasses, other herbaceous material and shrubs.
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*These can take on several forms, including parking lot islands, traffic islands, roundabouts, or cul-de-sacs and are often used as snow storage locations.
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#No exposure to roadway or parking lot runoff
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*Practices allow for a greater range of species selection.
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*These receive runoff from rooftops or areas that use no deicing salt and have low pollutant exposure, such as courtyard bioretention.
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Other selection factors:
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*Most bioretention cells will be situated to receive full sun exposure. The ‘Exposure’ column in the master plant list identifies the sun exposure condition for each species.
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*Facilities with a deeper media bed (greater than 1 m) provide the opportunity for a wider range of plant species (including trees).
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*The inclusion of vegetation with a variety of moisture tolerances ensures that the bioretention cell will adapt to a variety of weather conditions.
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*Proper spacing must be provided for above-ground and below-ground utilities, and adjacent infrastructure.
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See [[Plant Standards]] for specific plant species and sizes.