soil screen Articles

  • Screens

    WHEN it comes to selling compost, the markets can drive equipment purchase decisions. This was the case for the Lehigh County, Pennsylvania yard trimmings composting operation, which produced 14,000 cubic yards of compost in 2007. “We are doing a lot of work with a soil amendment company that makes products for golf courses,” says Tim Bollinger, Composting Operations Manager for the Lehigh County ...


    By BioCycle Magazine

  • Validation of a New Method for Screening Soil and Water for TCE Contamination

    INTRODUCTION ASTM Method D 7203-06, Standard Test Method for Screening Trichloroethylene (TCE)-Contaminated Media Using a Heated Diode Sensor, (ASTM 2006) can be used to screen a sample of soil or water known to contain the halogenated volatile organic compound (HVOC) TCE. The method calls for measuring the TCE concentration in the headspace above the sample using a heated diode sensor ...

  • Recommendations to improve wildlife exposure estimation for development of soil screening and cleanup values

    An integral component in the development of media‐specific values for the ecological risk assessment of chemicals is the derivation of safe levels of exposure for wildlife. Though the derivation and subsequent application of these values can be used for screening purposes, there is a need to identify the threshold for effects when making remedial decisions during site‐specific assessments. ...


    By John Wiley & Sons, Ltd.

  • Automated screening of explosives in soil samples by online SFE-SFC-MS

    There are a large number of explosives-contaminated sites in the US, Europe, and Asia. High levels of explosives in soil can threaten the health of humans, livestock, and wildlife. A number of remediation efforts are underway, which require the analysis of explosives in soil samples. Recently, a new technique was introduced that allows the automated supercritical fluid extraction and SFC ...

  • Are your field soil screening procedures providing you with practical and accurate information?

    Untitled Document Environmental consulting activities frequently require that on-the-spot decisions be made in the field concerning the ...


    By Enviro-Equipment, Inc.

  • Bioremediation of soil

    In our experience, Bioremediation is best accomplished with Bio-augmentation, the addition of large numbers of selected micro-organisms grown in the production laboratory. In addition to bio-augmentation, several physical and chemical parameters must be controlled in order to obtain optimal growth and maximum degradation of soil contaminants. The major factors that are controlled during ...

  • Derivation Methods of Soil Screening Values in Europe. A Review and Evaluation of National Procedures towards Harmonisation

    Problem definition Soil Screening Values (SVs) are generic quality standards that are used to regulate land contamination. Soil SVs adopted in European countries are widely variable in multiple aspects. The use of SVs varies from setting long term quality objectives, via triggering further investigations, to enforcing remedial actions. Derivation methods of SVs have scientific and political ...


  • Sensitivity of Ecological Soil screening levels for metals to exposure model parameterization and toxicity reference values

    Ecological soil‐screening levels (Eco‐SSLs) were developed by the USEPA (United States Environmental Protection Agency) for purposes of setting conservative soil screening values that can be used to eliminate the need for further ecological assessment for specific analytes at a given site. Eco‐SSLs for wildlife represent a simplified dietary exposure model solved in terms of soil ...


    By John Wiley & Sons, Ltd.

  • MB Screening Attachment Solves California Company’s Soil, Bark, and Wet Clay Problem

    For Timberline Tree Service, Inc., a powerscreen could not effectively break down wet clay at its facility. But a trommel screening attachment would. Initially, Timberline Tree Service, Inc. was looking for a machine to screen soil and bark. Once Tyler Willett, president of Timberline Tree Service, discovered MB Crusher’s screening attachment at World of Concrete 2016, he set out ...


    By MB Crusher

  • Bioremediating Explosives Contaminated Soil

    From the beginning of World War II until the 1970s, the site that is now the Naval Surface Warfare Center in Crane, Indiana (NSWC-Crane) was the home of a major bomb manufacturing operation. Explosive compounds such as TNT, Royal Demolition Explosives (RDX) and Her Majesty’s Explosive (HMX) were handled loose and drifted through air vents. Often, the material settled on the roofs of buildings, ...


    By BioCycle Magazine

  • Soil Vapor Extraction (In Situ)

    Introduction Soil vapor extraction (SVE) is an in situ unsaturated (vadose) zone soil remediation technology in which a vacuum is applied to the soil to induce the controlled flow of air and remove volatile and some semivolatile contaminants from the soil. The gas leaving the soil may be treated to recover or destroy the contaminants, depending on local and state air discharge regulations. ...

  • Chromium detection in water and soil...

    What is chromium? Chromium is a metal that is widely distributed in the earth’s crust (soil and rocks), air and water. Naturally occurring chromium occurs mainly in the chromium (III) form as chromite ore, which contains oxygen, chromium (III) and other metals such as iron. Chromium (VI) compounds are produced commercially from chromite ore for a wide variety of uses. ...


    By Camlab Limited

  • Horizontal Soil Vapor Extraction Wells

    As part of a Corrective Action Plan (CAP) submitted to NYSDEC, a consultant selected Horizontal Soil Vapor Extraction Wells (HSVE) to expand an on-site vapor extraction system in New York. Directional Technologies worked with the consultant on the horizontal well screen design and well layout of three (3) HSVE wells, spaced 50-feet apart, and constructed with 4-inch Schedule 80 PVC materials. Due ...

  • Soil Attenuation Model for Derivation of Risk-Based Soil Remediation Standards

    Untitled Document Overview of Soil Attenuation Model (SAM) Under a risk-based corrective action (RBCA) process, soils and groundwater impacted by a chemical release are ...


  • Case study - EPH in soil with No. 6 fuel oil

    No. 6 fuel oils (heavy fuel oil, bunker C oil) is often used in industry for heat, steam or power generation. A consultant used Sitelab to investigate two different spill sites contaminated with subsurface plumes of NAPL resulting from leaking underground storage tanks (USTs). Soils were collected from borings using a drill rig and field screened for their EPH aromatic content. Split samples ...


    By Sitelab Corporation

  • Soil Attenuation Model (SAM) Technical Background Document

    Under a risk-based corrective action (RBCA) process, soils and groundwater impacted by a chemical release are to be remediated or controlled to concentration levels such that further migration will not expose human or environmental receptors to unsafe levels of hazardous constituents. For this purpose, site-specific target levels (SSTLs) must be established for the affected soil mass such that ...


  • Case study - GRO in soil at gasoline UST site

    These case studies show the performance using Sitelab’s UVF-3100 analyzer testing gasoline range organic hydrocarbons.  This includes benzene, xylene, BTEX and other volatile petroleum compounds in the GRO or VPH C6 to C10 hydrocarbon range. When calibrated using Sitelab's GRO calibration kit (CAL-025), the UVF analyzer produces test results that correlate well to laboratory ...


    By Sitelab Corporation

  • Ex Situ Thermal Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatments is that they generally require shorter time periods, and there is more certainty about the uniformity of treatment because of the ability to screen, homogenize, and continuously mix the soils. Ex situ processes, however, require excavation of soils leading to increased costs and engineering for equipment, possible permitting, and materials handling worker ...

  • Ecotoxicity of benzo[a]pyrene assessed by soil microbial indicators

    The ecotoxicity of benzo[a]pyrene (BaP) to soil microorganisms was evaluated using the following microbial indicators: soil microbial biomass, respiration, nitrification, and Shannon index. Two soil types, udic ferrosols and aquic cambisols, were amended with 0 mg/kg, 1 mg/kg, 10 mg/kg, 100 mg/kg, 500 mg/kg, or 1000 mg/kg BaP; incubated at 25 °C; and tested on days 28, 60, and 180. The Shannon ...


    By John Wiley & Sons, Ltd.

  • New Field Test for Lead (Pb2+) in Soil

    Field tests for the detection of lead in soil are not frequently accepted, since the tests are rather cumbersome or not reliable for screening determinations. Recently, we developed the LEADQuick field test kit for the detection of lead in water with 3 #22;g/L sensitivity. This test is further modifiedto detect lead in soil with a sensitivity 0.03 #22;g. We developed an extraction protocol using ...

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