Silt fence configured for capturing pollutants and fabric forming the same

A composite silt fence comprising:

• a plurality of spaced stakes;
• and
• a composite fabric coupled to the stakes, the fabric including:
• i) a polymeric geotextile fabric particulate filtering layer extending substantially an entire width and length of the composite silt fence fabric and defining a hydraulic flow capacity for the silt fence, wherein the polymeric geotextile fabric particulate filtering layer is one of i) a nonwoven material and ii) a woven material;
• ii) a pollutant capturing layer coupled to the polymeric geotextile fabric particulate filtering layer and extending substantially the entire width and length of the composite silt fence fabric so as to substantially entirely overlay the polymeric geotextile fabric particulate filtering layer and configured to capture some select pollutants in water from flow that has passed through the polymeric geotextile fabric particulate filtering layer through absorption or adsorption;
• and
• iii) a backing layer coupled to the pollutant capturing layer extending substantially the entire width and length of the composite silt fence fabric so as to substantially entirely overlay the pollutant capturing layer.

A composite silt fence comprising:

• a plurality of spaced stakes;
• and
• a composite fabric coupled to the stakes, the fabric including:
• i) a polymeric geotextile fabric particulate filtering layer extending substantially an entire width and length of the composite silt fence fabric and defining a hydraulic flow capacity for the silt fence, wherein the polymeric geotextile fabric particulate filtering layer is a nonwoven material;
• ii) a pollutant capturing layer coupled to the polymeric geotextile fabric particulate filtering layer and extending substantially the entire width and length of the composite silt fence fabric so as to substantially entirely overlay the polymeric geotextile fabric particulate filtering layer and configured to capture some select pollutants in water from flow that has passed through the polymeric geotextile fabric particulate filtering layer through absorption or adsorption;
• and
• iii) a backing layer coupled to the pollutant capturing layer extending substantially the entire width and length of the composite silt fence fabric so as to substantially entirely overlay the pollutant capturing layer, wherein the polymeric geotextile fabric particulate filtering layer and the pollutant capturing layer and the backing layer are needle punched together.