Air Data

Discharge from the sedimentation basin was initiated at 7:30 am based on visual observations of the water in the sedimentation basin. The observations clearly showed a reduction in turbidity in the basin and clear water was observed to at least a 1-2 foot depth. Discharge was permitted to continue after a reading of 48.3 NTUs was collected at the discharge pipe. Six turbidity readings were collected at the discharge point throughout the morning with results all well below the turbidity standard (highest result was 53.9 NTUs). The monthly discharge sample for August for total and dissolved lead analysis was collected at 11:20 am. The turbidity at the time of sample collection was 6.36 NTUs. Dissolved lead was not detected at a detection limit of 1 ug/L. The NPDES permit standard for maximum dissolved lead for the Site is 650 ug/L. Total lead was also not detected at a detection limit of 1 ug/L. There is not an NPDES standard for total lead. These results confirm that the turbidity performance standard is protective against a release of lead into the Lackawanna River.