Polycyclic aromatic hydrocarbons (PAHs) in urban rainfall runoff source mainly asphalt roads and auto tire friction loss. Persistent toxic pollutants (remobilised) especially PAHs, has significant teratogenic, carcinogenic and mutagenic "three" effect. This article USES the Horizon DryVap quantitative enrichment and GC - MS determination of polycyclic aromatic hydrocarbons (PAHs) content.