This document is the StormTech Isolator Row PLUS - Summary of Testing. It provides a general overview of the pollutant removal capacity of the system.

The StormTech Isolator Row PLUS is a row or rows of thermoplastic chambers that sit on a layer of ADS PLUS fabric and are connected to a closely located structure for easy access. The chambers provide for settling and filtration of sediment and other contaminants as stormwater rises in the Isolator Row PLUS and ultimately passes through the fabric. The open-bottom chambers allow stormwater to flow out of the chambers. Sediment is captured in the Isolator Row PLUS, protecting the storage areas of the adjacent stone and chambers from sediment accumulation.

The StormTech Isolator Row PLUS is designed to capture the “first flush” and offers the versatility to be sized on a volume basis or a flow-rate basis. An upstream manhole not only provides access to the Isolator Row but includes a high low/concept such that stormwater flow rates or volumes that exceed the capacity of the Isolator Row bypass through a manifold to the other chambers. This is achieved with either a high-flow weir or an elevated manifold. This creates a differential between the Isolator Row PLUS and the manifold, thus allowing for settlement time in the Isolator Row PLUS. A schematic of the Isolator Row PLUS is provided. Unique features with a cross section detail included.

The testing was run by Tennessee Tech University’s Civil and Environmental Department who prepared the “Performance Evaluation of Sediment Removal Efficiency – StormTech Isolator Row”. Testing on a full-scale Isolator Row in a laboratory was done to determine the sediment removal efficiency with two different silica-water slurries in accordance with NJCAT protocols. In August of 2007, the technology was verified by NJCAT. How the test was performed is discussed with supporting efficiency data and product performance stats. A list of approvals is offered.

Isolator row maintenance recommendations are at the end of the document.