TxDOT's Sustainable Pavements: Low Carbon Materials/Alternative ...

PFC PGBenefits: Improved Water Quality‣ A TxDOT study discovered that the storm water qualitysignificantly improved after PFC PG is placed. It is believed thatthe PFC PG slows the flow and filters the waterConstituentTotal Suspended Solids (TSS) (mg/L)TKN (mg/L)NO3/NO2-N (mg/L)Total P (mg/L)Dissolved P (mg/L)Total Copper (mg/L)Total Lead (mg/L)Total Zinc (mg/L)Dissolved Copper (mg/L)Dissolved Lead (mg/L)Dissolved Zinc (mg/L)ConventionalAsphalt117.81.130.430.130.03626.812.61675.9047PFC PG80.540.400.230.0775.70.7453.9034COD (mg/L) 64 30