This table shows pollutant concentrations for stormwater pond BMPs.
Link to this table
Practice TSS High-Med-Low2 TP High-Med-Low2 TN Cu Zn
Stormwater Ponds 10-19-30 0.10-0.17-0.25 1.3 0.005 0.030

1 All concentration values in mg/L which equals parts per million