Surface Impoundment Closure
SEMS was contracted to handle the closure of several surface impoundments cells located within the Polishing Lagoon System.
- Treatment of approximately 6,000 cyds of in-situ sludge to reduce the TPH level to below 10,000 ppm
- Importing and placement of 60,000 cyds of backfill materials
- Construction of a 5-acre parking area