forensic analysis Articles

  • Forensic complexity

    This note introduces forensic complexity as a multidisciplinary approach to the study of comprehension in complex situations in order to enable justifiable action. The term itself seems paradoxical when viewed as analysis of the unpredictable or irreducible. The paradox is resolved by the adoption of an internally consistent perspective for complex situations referred to as a complex situations ...


    By Inderscience Publishers

  • Case study - Oklahoma crude oil forensic analysis

    An oil company used Sitelab’s laboratory to perform oil forensic analysis testing crude oils from different well sites to determine the percentage of oil content from two formations. The wells tap into these zones at different depths, thousands of feet below the ground. Knowing what type of oil being pumped is important. All six oil samples had similar GRO content, but the PAH content in ...


    By Sitelab Corporation

  • Environmental forensics investigation

    Location: Vancouver, BC Owner: Confidential Description: Environmental forensics investigation ongoing to determine the source of chlorinated solvents (PCE, TCE, 1,1,1-TCA1,1,DCE) and 1,2-dichlorobenzene contamination at a site that has changed owners in the past 25 years. Advanced Forensic Techniques used include hydrolysis equation for ...


    By NovaTec Consultants Inc.

  • Forensic investigation of flexible pavements in Ohio

    This paper presents the results of a forensic investigation initiated by the Ohio Department of Transportation in 2006 to determine the reasons for differences in performance of flexible pavements in Ohio. Ten projects with average performance and ten projects with excellent performance were selected for study. Falling Weight Deflectometer and ride quality measurements were taken along all ...


    By Inderscience Publishers

  • Case study - NAPL forensics analysis at tank farm in Boston

    Ambient Engineering, Inc. (Concord, MA) used Sitelab to investigate and remediate a former tank farm along Boston Harbor contaminated by a large, subsurface plume of commingled diesel fuel and No. 6 fuel oil. Loading racks (above) are suspected to have contributed to most of the site’s contamination. Light Non Aqueous Phase Liquids (LNAPL) collected from 40 monitoring wells were tested ...


    By Sitelab Corporation

  • InfoWorks RS underpins forensic analysis of the Boscastle flash flood

    The picturesque small town of Boscastle, on the North Cornwall coast, became a dramatic addition to the UK’s history of extreme flood events on 16 August 2004. On that day, an exceptionally prolonged and intense storm centered on Otterham, near the headwaters of Bodmin Moor, caused levels in its sea-bound exit routes - the river Valency, the Crackington stream, the river Neet and the river Ottery ...


    By Innovyze

  • Forensic engineering applied to the analysis of a gas explosion in a residential building

    Present paper deals with the identification of the cause of an explosion in a hollow space positioned below a residential building as the result of welding operations. On field investigation clearly demonstrated that the explosion was due to the ignition of a flammable atmosphere in the basement of the building. Along the trial two hypotheses were brought to the judge: (a) explosion of an ...


    By Inderscience Publishers

  • Case study - NAPL forensics analysis at refinery site in Kansas

    An environmental consultant at Subsurface Environmental Solutions, LLC used Sitelab to fingerprint a large plume of Non Aqueous Phase Liquids (NAPL) located at a former oil refinery in Kansas. The plume is commingled with gasoline, diesel, crude oil and other petroleum products. Sitelab’s portable UVF-3100D analyzer is fitted with optical filters which can measure the C6 to C10 gasoline ...


    By Sitelab Corporation

  • Forensic engineering investigations of disasters: going 'beyond the widget'

    Forensic engineering is the use of engineering knowledge and techniques to create evidence for the legal system. Both litigation and regulatory systems use engineering evidence in making legal decisions. Forensic engineering plays a key role in investigating disaster scenarios. But commentators have described the investigatory focus on trivial proximate causes as the 'Widget' approach, where the ...


    By Inderscience Publishers

  • Identification of forensic fabrics using a portable Raman spectrometer

    At a crime scene, a police officer collects a fiber sample that may prove to be invaluable evidence in identifying a criminal or exonerating an innocent person. While FTIR has been used for analysis in the past, the strong absorption of the fabric or the glass slide where it is mounted makes the spectrum very hard to interpret. In recent years, Raman spectroscopy has been studied extensively for ...


    By B&W Tek

  • The use of portable and handheld Raman spectroscopy for forensic investigations

    The Raman technique is gaining widespread acceptance as an investigative tool for forensic applications. This article focuses on the use of portable and handheld Raman spectroscopy in the field of forensic science and illustrates it with real-world examples. The benefits of Raman spectroscopy are well recognized for the molecular identification of unknown molecular compounds and as a result the ...


    By B&W Tek

  • Precellys application focus forensic - case study

    Forensic laboratories working with hard samples such as hair [1, 2J, bone [3], teeth, skin, etc. experience difficulties with DNA extraction due to the high energy needed to grind these tissues. Moreover, biological evidence is available in small quantities and the current techniques used do not provide high quality results. The Precellys homogenizers provides high speed sample disruption based ...

  • Forensic engineering of fire damaged concrete structures: state of the art

    All structures are likely to be subjected to elevated temperatures during an event of fire. Due to accidental thermal loads the structures may be subjected to cracking and that affect both the mechanical or structural properties. Even though total collapse of structure is rare, the structures or a part of it may suffer partial damage. Thus structures need to be thoroughly assessed in order to ...


    By Inderscience Publishers

  • Parsing pyrogenic PAHs: Forensic chemistry, receptor models, and source control policy

    A realistic understanding of contaminant sources is required to set appropriate control policy. Forensic chemical methods can be powerful tools in source characterization and identification, but they require a multiple‐lines‐of‐evidence approach. Atmospheric receptor models, such as EPA's Chemical Mass Balance (CMB), are increasingly being used to evaluate sources of pyrogenic polycyclic ...


    By John Wiley & Sons, Ltd.

  • Methodology for Forensic Investigation of Potable Water Quality in Municipal Distribution Systems

    Abstract During routine regulatory potable water quality sampling in distribution systems related to the Total Coliform Rule, utilities can sometimes experience anomalous detections of total coliform bacteria and/or fecal coliform bacteria in the distribution system samples. Frequently, the regulatory-required retesting of the same sample locations reveals no detection of bacteria, and thus ...

  • Estimating ground motion levels in earthquake damage investigations: a framework for forensic engineering seismology

    Earthquake–resistant design matches performance targets of structures and facilities with defined levels of ground shaking. Structural failure in an earthquake may result from higher ground motions or from poor design and construction. In legal disputes in such circumstances experts are required to infer the ground–motion levels at the site, if there are no ground–motion ...


    By Inderscience Publishers

  • Forensic applications including mapping and classification of tsunami sand deposits and sand dunes with ground penetrating radar

    The coastal region experiences erosional, transportational and depositional events during mega events such as tsunami. The onshore deposits are significant in determining the past events of high–energy events in the coastal region. The Optically Simulated Luminescence (OSL) dating of the sediments by combining Ground Penetrating Radar (GPR) records will reveal the past tsunami events. OSL dates ...


    By Inderscience Publishers

  • Forensic evaluation of multiple cracking of a concrete test cell built over an open graded aggregate base

    In August 2011 a test cell of 6 inch thick concrete surfacing placed over of special open graded Limestone aggregate base predominantly 8 inches (203 mm) thick was constructed at the MnROAD research facility. The two layers overlaid an existing 6 inch (150 mm) of MnDOT non–drainable aggregate base that overlaid a clay/silt sub–grade. In July 2012, an extensive cracking pattern was observed. This ...


    By Inderscience Publishers

  • A forensic study at an abandoned service station along the New Jersey shore: How the mixed leads can help

    In the late 1990s, a real estate developer purchased an abandoned service station at a sheriff’s sale. The site was located on the barrier island near Atlantic City, New Jersey. The service station had been owned previously by an independent operator. That owner purchased the property from a major oil company in 1983. Our client, the real estate developer, never operated the service ...


  • FORENSIC study at a Northern New Jersey service station: the mixing of old and new gasoline

    In 2000, a client purchased a gasoline service station in northern New Jersey. A few days after receiving possession of the property, he received a letter from a State regulatory agency informing him that an investigation surrounding a leaking waste oil UST was required. He was unaware that a waste oil UST had existed; automotive repairs were not part of his or the previous owner’s business ...


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