TITLE

Evaluating the Applicability of Regulatory Leaching Tests for Assessing Lead Leachability in Contaminated Shooting Range Soils

AUTHOR(S)
Xinde Cao; Dermatas, Dimitris
PUB. DATE
April 2008
SOURCE
Environmental Monitoring & Assessment;Apr2008, Vol. 139 Issue 1-3, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The toxicity characteristic leaching procedure (TCLP) is the current US-EPA standard protocol to evaluate metal leachability in wastes and contaminated soils. However, application of TCLP to assess lead (Pb) leachability from contaminated shooting range soils may be questionable. This study determined Pb leachability in the range soils using TCLP and another US-EPA regulatory leaching method, synthetic precipitation leaching procedure (SPLP). Possible mechanisms that are responsible for Pb leaching in each leaching protocol were elucidated via X-ray diffraction (XRD). Soil samples were collected from the backstop berms at four shooting ranges, with Pb concentrations ranging from 5,000 to 60,600 mg kg−1 soil. Lead concentrations in the TCLP leachates were from 3 to 350 mg l−1, with all but one soil exceeding the USEPA non-hazardous waste disposal limit of 5 mg l−1. However, continued dissolution of metallic Pb particles from spent Pb bullets and its re-precipitation as cerussite (PbCO3) prevented the TCLP extraction from reaching equilibrium at the end of the standard leaching period (18 h). Thus, the standard one-point TCLP test would either over- or under-estimate Pb leachability in shooting range soils. Lead concentration in the SPLP leachates ranged from 0.021 to 2.6 mg l−1, with all soils above the USEPA regulatory limit of 0.015 mg l−1. In contrast to TCLP, SPLP leaching had reached equilibrium, with regard to both pH and Pb concentrations, within the standard 18 h leaching period, and the analytical SPLP results were in good agreement with those derived from modeling. Thus, we concluded that SPLP is a more appropriate alternative than TCLP for assessing lead leachability in range soils.
ACCESSION #
31160795

 

Related Articles

  • The physiochemical properties and heavy metal pollution of fly ash from municipal solid waste incineration. Tian Zhipeng; Zhang Bingru; He Chengjun; Tang Rongzhi; Zhao Huangpu; Li Fengting // Process Safety & Environmental Protection: Transactions of the I;Nov2015, Vol. 98 Issue Part B, p333 

    Fly ash originating from municipal solid waste incineration (MSWI) is potentially hazardous waste and is harmful to the surrounding area once it enters the environment. In this study, we measured the physiochemical properties of fly ash derived from domestic waste incineration as well as the...

  • Leaching of Hazardous Substances from Additives and Admixtures in Concrete. Togerö, Åse // Environmental Engineering Science;Jan2006, Vol. 23 Issue 1, p102 

    The aim of this work was to study the leaching of hazardous substances in additives and admixtures that are commonly contained in concrete. Time-dependent leaching has been analyzed for three types of metal containing concretes: with ordinary Portland cement (OPC), fly ash, and slag. The...

  • Ruling could be damaging.  // Waste & Recycling News;2/1/2010, Vol. 15 Issue 20, p8 

    The article focuses on the potential ruling by the U.S. Environmental Protection agency (EPA) on the labeling of coal ash as a hazardous material. As mentioned, EPA agrees coal ash as an aggregate in concrete products is not an environmental problem but it is concerned about leaching, and that...

  • End-of-Life Leaching of Lead and Other Elements. Christian, Bev; Romanov, Alexandre; Turner, David // Advanced Packaging;Oct2005, Vol. 14 Issue 10, p28 

    Discusses key issues concerning the leaching of lead and other toxic chemicals from end-of-life consumer electronics in the U.S. in 2005. Environmental protocols used as the testing bases for leaching studies; Analysis of pertinent topics and relevant issues; Implications for environmental...

  • the Digest: SCIENCE AND ENVIRONMENT. Wooster, Martin Morse // American Enterprise;Apr/May2000, Vol. 11 Issue 3, p56 

    Presents the research `Are Risk Regulators Rational? Evidence from Hazardous Waste Cleanup Decisions,' by W. Kip Viscusi and James T. Hamilton. Government policy on toxic waste site cleanup; Role of politics in the decision of the United States Environmental Protection Agency on how clean a...

  • ecosmarts. Dalsing, Jessica // Cincinnati Magazine;Mar2005, Vol. 38 Issue 6, Special section p97 

    The article reports that since the Environmental Protection Agency of Ohio categorizes paint as a household hazardous waste, proper disposal can pose a challenge in one's home--and for the environment. Oil-based paints tend to be more toxic than latex paints, but both can contain harmful...

  • Texas high court ready to review 'hazardous' case.  // American Drycleaner (Crain Communications Inc. (MI));Jan2004, Vol. 70 Issue 10, p8 

    The article focuses on the review of 'hazardous' case by Texas high court. The Texas Supreme Court will begin hearing testimony this month on a case originally reported on in October 2003. The state's accepted legal definition of hazardous waste, or more specifically, "closed-loop recycling" is...

  • Removal of Explosives Using an Integrated Iron–Microbial Treatment in Flow-Through Columns. Oh, B.-T.; Alvarez, P. J. // Bulletin of Environmental Contamination & Toxicology;Jul2004, Vol. 73 Issue 1, p1 

    This article focuses on contamination of soils. Soils and groundwater at military sites are often contaminated by RDX and other toxic compounds as a result of wastewater disposal from munitions production, handling and testing operations. RDX is toxic to humans and a variety of organisms and is...

  • Federal Stimulus Money Will Speed Cleanup at Iron Mountain Mine Site.  // Hazardous Waste/Superfund Alert;4/1/2009, Vol. 31 Issue 4, p4 

    The article offers information on the funds from the federal stimulus package which will be aimed to speed up ongoing clean-up work at the Iron Mountain Mine Superfund Site near Redding, California. It notes that the funding through the American Recovery and Reinvestment Act of 2009 worth...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics