Field testing also allows for a more accurate assessment of filter performance for stormwater pollutants other than suspended solids. These pollutants are subject to complex physical, chemical, and biological interactions that are not easy to replicate in a laboratory. | Field testing also allows for a more accurate assessment of filter performance for stormwater pollutants other than suspended solids. These pollutants are subject to complex physical, chemical, and biological interactions that are not easy to replicate in a laboratory. |