free hit counter Soil Remediation Case Studies

Harbour Remediation & Transfer
Services
Bioremediation
Georemediation™
Remediation applications
Case studies
Research & Technology
Scientific papers
Projects
In The News
Mobile licences
Certifications
Quote Form
Environment & Safety
Careers
About us
Contact us
Feedback

The Rodman's Neck Project

Problem:

A high profile lead remediation project at Rodman's Neck New York Police Department Firing Range required the treatment of lead-impacted soils.

Solution:

HR&T Inc.'s Georemediation™ technology is the best method in chemically treating the soil and ensuring that it can endure differing weathering and natural conditions over a long period of time.

The Rodman's Neck Project

A total of 185,000 cubic yards of lead-impacted soil was treated using HR&T Inc.'s Georemediation™ technology as a solution to a very complex problem. After establishing that the Georemediation™ procedure would stand the test of time and differing weathering conditions, the project was initiated by the NYPD after gaining appropriate regulatory approvals.

The Technology was evaluated by one of America's most prominent treatability companies, Kiber Environmental Services Inc. Kiber identified that to be considered as a long-term technical solution for Lead-impacted Soils, the Georemediation™ Technology needs to pass the following tests:

•  Toxicity Characterization Leaching Procedure (TCLP) - The TCLP procedure was designed by the Environmental Protection Agency (EPA) to simulate the leaching of chemicals by organic acids occurring in sanitary landfills. As such, the TCLP test uses acetic acid, an organic acid, as the leaching fluid. This test is important because treated soil could be taken to a landfill. However, gun range soil is usually left in place, so it was important to determine the effect acid rain would have on the treated soil left on site. With this in mind, Kiber suggested the Synthetic Precipitation Leaching Procedure.

• Synthetic Precipitation Leaching Procedure (SPLP) - This test was designed to simulate the leaching effects of acid rain, and would provide more accurate data for the actual site conditions for treated soil left on site. There are two SPLP leaching fluids representing the types of acid rain commonly occurring in different regions of United States. The fluid used is determined by site conditions, either east or west of the Mississippi River.

• Multiple Extraction Procedure (MEP) - This procedure is performed to establish long-term leachability data, whereas the SPLP test indicated how our treatment would stand up to acid rain today. The MEP was developed by the EPA to determine long-term exposure of materials to acid rain. The procedure involves repeated extraction of a material through ten leaching cycles. The first cycle is the EP TOX, which is very similar to the TCLP using acetic acid. The next nine cycles use a synthetic rain made up of 60 percent concentrated sulfuric acid and 40 percent concentrated nitric acid.

The MEP is believed to duplicate the effects of weathering for 500+ years.

In an effort to determine what was taking place at the chemical level, "MVA" a highly respected microanalysis company in Atlanta, Georgia, was hired. The company used an automated scanning electron microscope and an analytical (transmission) electron microscope to determine the location(s) and chemical state(s) of the lead in soil, with particular emphasis on the effect of our Georemediation™ Technology.

Conclusion:

The conclusion of the review is that our Georemediation™ Technology was extremely effective because "much of the lead was converted into a calcium and iron-bearing lead phosphate known as pyromorphite. In terms of remediation, pyromorphite is an attractive mineralization product, since it is among the most environmentally insoluble lead compounds."

We have completed extensive research and applied strict scrutiny to assure that our Georemediation™ process offers the best long-term remediation solution for metal impacted soils. We have used the experience, advice and verification of the industry's most well-respected experts to establish our position.

Since that time, the Georemediation™ technology has been utilized for other hazardous sites and today we can say with confidence that we have gone the extra mile to ensure that our treatment for lead-impacted soils is the most effective long-term solution in the industry today.

For more information on the Bioremediation technology, please contact Harbour Remediation and Transfer Inc. at 416-406-0987, or email info@hrandt.com.




2004 HR&T Inc.