Assessment of Polyacrylamide Concentration in Construction Stormwater Runoff
When used in erosion control, polyacrylamide (PAM) may unintentionally appear in stormwater runoff. This study used a large-scale ASTM D6459 rainfall simulator, a centrifuge, and a UV-Vis spectrometer to assess the presence of PAM in runoff samples from the test. High (>120 mg/L) to moderate concentrations were detected throughout the simulation. Implications suggest that caution should be used when employing PAM near environmentally sensitive areas.
- Understand the potential environmental concerns of using polyacrylamide (PAM) for erosion control.
- Understand one method to quantify PAM concentration in runoff that works for construction.
- Understand that the large-scale storm simulation yielded high (<120 mg/L) to moderate concentrations of PAM in runoff.