Abstract
It is well documented that urban runoff and roadside soils can become contaminated with particulate deposits, especially heavy metals, sourced from vehicles. However, phosphorous from vehicular sou...
Highlights
Despite its importance to the natural environment, phosphorus remains a source of constant envir onmental concern
The objective of this work was to determine whether or not phosphorous sourced from vehicular emissions and deposited onto roadways presents a significant risk to either groundwater, via infiltration into roadside soil, or to surface water, via runoff to storm drains
Though it was observed that heavy metals have contaminated roadside soils and that the mechan ism for roadside soil contamination from vehicular deposits is valid, phosphorous does not appear to present a risk to roadside soils and, should neither present a risk to groundwater
Summary
Despite its importance to the natural environment, phosphorus remains a source of constant envir onmental concern. Possible sources of excess phosphorus in the environment have been extensively researched and regulated. These sources include wastewater treatment plants (Dolan & McGunagle, 2005), agricul ture non-point sources (Seitzinger et al, 2005), septic bed leachate (Zanini et al, 1998) and atmo spheric loading (Dolan & McGunagle, 2005). High phosphorus levels may damage vehicle emission systems, phosphorous compounds remain an additive in low concentrations. Gasoline manufacturers do not typically disclose the exact proportions of additives in gasoline; soluble phosphorous can enhance the potential eutrophication of waterbodies even in very small concentrations Environmental Protection Agency (2005) recognizes the eutrophication limit to be 0.03 mg/L)
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