Erosion and Sediment Control Calculation and Process Review – Confidential Client – Eastern U.S.

This large roadway construction project was experiencing overflow events from temporary construction storm water basins. This resulted in sediment from the basins entering adjacent waterways.  Since the project was in its initial stages and additional basins were planned, the client was concerned that the basins were undersized. The client had compiled calculations and reviewed the methodology for sizing of the sediment basins.  STONE was contracted to peer review this report, independently perform calculations, review processes and applicability of equations used, evaluate the validity of the argument that the basins were undersized, and provide a detailed report.

STONE reviewed hundreds of pages of plans, numerous sources of regulatory guidance, and assessed the validity of equations and parameters used within a fast-track four week time-frame

I am writing to thank you (Hank) and STONE for the services you performed for the site civil design (CC-plans and Site Compliance Plan), preparation of construction documents and specifications, and obtaining approvals through the City of Columbus for our new V&S Columbus Galvanizing LLC facility. Your ability to meet our tight schedule, stay within engineering construction budgets, and provide a quality end product was critical to the completion of the site work for this project.