- RECYC Systems, Inc. – Land application contractor in Virginia.
- MSD Environmental Services, Inc. – Dewatering equipment fabricator and technical consultants.
- Triton Metals, Inc. – Fabricator of patented wastewater treatment equipment.
- Watershed Resource Center, Inc. – Environmentally safe agricultural and horticultural soil amendments and fertilizers for the Chesapeake region.
- 33 Stahl Point Road, LLC – Industrial site focused on residuals processing and barge transport.
- CROPS, Inc. – Land application and storage managed day to day by Old Line.