Free Flow News

Free Flow Successfully Treats US Army

Firing Range Waste

Free Flow Technologies, Ltd. (Free Flow) supplied treatment reagent which was successfully used in the stabilization of firing range waste located at the Rock Island Arsenal in Rock Island, Illinois. Free Flow was awarded the contract to supply the reagent to a US Army Corps of Engineers (USACE) Remediation Contractor.

USACE had the soil sampled in an area which had been designated as an impact zone for the test firing of military ordinance over many years. The samples were analyzed and it was determined the impact zone soils contained potentially hazardous levels of leachable lead which if removed untreated would fail the USEPA's Toxicity Characteristic Leaching Procedure (TCLP) at greater than 5 mg/L Lead.

The most cost effective approach of handling this problem was determined to be on site treatment of the waste. This treatment step would render the waste non-hazardous avoiding the high cost of transporting and disposing of the treated waste at a Subtitle C Hazardous Waste Landfill. Upon successful treatment the waste could be sent to a more cost effective Subtitle D Industrial Landfill for final disposition.

All project stakeholders, USACE, consultant and contractor, were pleased with the technical and economical aspects of the Free Flow product. The reagent is easy to transport, store and mix with the contaminated soil. Mixing is accomplished with traditional construction equipment. Unlike many reagents which require large doses (15-20%) to meet regulatory requirements, Free Flow was able to achieve successful treatment results at 3%. The cost savings for the low dosage is recognized not only with the original reagent purchase but also the bulking factors for less total waste generated for offsite transportation and disposal fees to the landfill.

TECHNICALLY EFFECTIVE • COST EFFICIENT • USER FRIENDLY • LOW DOSE APPLICATION