Author/Authors :
Mijangos-Montiel، J L نويسنده Facultad de Ciencias Qu?micas e Ingenier?a, Universidad Aut?noma de Baja California. Calzada Tecnol?gico 14418, Mesa de Otay, Tijuana, Baja California, México, CP. 22390 , , Wakida، F T نويسنده Facultad de Ciencias Qu?micas e Ingenier?a, Universidad Aut?noma de Baja California. Calzada Tecnol?gico 14418, Mesa de Otay, Tijuana, Baja California, México, CP. 22390 , , emores-Pe?a، J نويسنده Facultad de Ciencias Qu?micas e Ingenier?a, Universidad Aut?noma de Baja California. Calzada Tecnol?gico 14418, Mesa de Otay, Tijuana, Baja California, México, CP. 22390 ,
Abstract :
There are many potential sources of stormwater pollutants in urban areas; one of these sources
is gas stations, which are numerous and spread city-wide. A study was conducted to evaluate the water quality
of runoff from gas stations in the city of Tijuana, Mexico. Pollutant loads in runoff from gas stations in the
study area were higher than in other published studies. The estimated loads from gas stations of oil and grease
(OG), total suspended solids (TSS) and chemical oxygen demand (COD) were 39.9, 265.3 and 168.6 Kg/ha,
respectively. These values of OG, TSS and COD were 57, 41 and 18 times higher than the values reported in
another similar study conducted in the US. The possible reasons for these differences may lie in the different
cleaning processes utilized in gas stations, in the mechanical conditions of the cars that enter the sites and the
urban characteristics surrounding the gas stations. The results from this study show that runoff from gas
stations can be a main contributor of pollutants such as suspended solids, heavy metals, oil and grease to
stormwater and water bodies.
