LQM is a specialist environmental consultancy based in Nottingham (UK) with an international reputation for assessing and managing the risks posed to human health and the environment by contaminants in soil. Increasingly this is being done within a context of sustainable development and specifically sustainable brownfield regeneration.

We provide consultancy, peer review and expert witness services, contract research and training courses on all aspects of the management of land contamination to problem holders, developers and local government.

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Archive: Oct 2019

  1. Getting the right answers needs the right tools and efficient use of your data

    Changing pattern of ground water levels and ground gas concentrations over 13 rounds of (spot) monitoring before, during and after leakage of discharge water from a Combined Heat and Power Plant (NOTE: hypothetical site & conditions). See QGIS3 course for full-screen hi-res video.


    LQM have for many years had to make sense of myriad datasets, in multiple data formats and from varied site investigations … ranging from single house plots to large industrial sites or residential estates … previous investigations and risk assessments undertaken by small independents through to large multi-national companies.

    One of the most consistently frustrating features of such work is a little more effort at combining the data collected with the right data analysis tools and data formats would have made the original decision-making more effective, cost efficient and ultimately sustainable. Robust data management, analysis and visualisation breeds the sound science and defensible decisions from site investigations regulators demand, stakeholders expect and clients deserve.

    Roger Chandler of Keynetix in the Nov/Dec 2018 issue of the AGS Magazine clearly states the importance of using the AGS data format and you cannot argue against the logical efficiency of his two ‘Golden rules’ … only enter data once … and get someone else to do it!

    Once you have all of this data in the right format you need a way to interrogate, visualise and evaluate it. For contamination investigations the LQM starting tool of choice is a Geographic Information System (GIS), as each sample you take or monitoring point has a location in space (Easting, Northing, Elevation) and time. Your conceptual site model has the same dimensions and so there is a logical efficiency in using a GIS to store and present your data.

    BS ISO 18400‑104:2018 ‘Sampling Strategies’ (and other members of the BS ISO 18400 series) is guidance intended to be used in conjunction with and take precedence over BS 10175:2011+A2:2017 ‘Investigation of potentially contaminated sites’. Part 104 provides guidance on the development of site investigation and sampling strategies taking into account the need to obtain representative samples and to have regard to relevant statistical principles.  (We will leave the limitations of non-spatial statistics for another occasion – but Paul Nathanail did cover this in a webinar on geostatistics a year or so ago).

    GIS helps us ensure we meet the current standards for data collection, visualisation, data analysis and dissemination of information.

    The good news is that free and open source GIS tools such as QGIS are now widely available and have, for most contaminated land situations, comparable functionality to commercial software systems. Indeed QGIS can be integrated with data analytics (e.g. RQGIS). A host of user-friendly plugins also brings more conventional statistical and graphical spreadsheet analysis, such as summary statistics, X-Y scatter plots, histograms, box-plots and even ternary plots directly into the GIS environment (WARNING – non spatial statistics can give misleading results!).

    You can quickly load your geotagged site walkover photos into your GIS model and view them conveniently within QGIS as an aid to communication and visualisation to clients and colleagues (see this LQM GIS web-byte). Similarly you can view your borehole logs as images or tables in tandem with your contaminant and other site investigation datasets, helping you more clearly define your  conceptual site model, risk evaluation and communication (there’s a LQM GIS web-byte to help you with that too).

    If your looking to display your monitoring data as an animated video then QGIS can do that for you too. The major limitation of QGIS for site investigations is knowing what it can do for you and how to do it.

    If you would like to learn more; here’s some good news: LQM are running three one-day entirely hands-on courses to cater for both beginners (QGIS 1), current users looking to more efficiently translate data into information and solve problems (QGIS 2) and for those wishing to learn how to create efficient workflows which can be shared with colleagues, save you time and produce reproducible outputs (QGIS3). These courses will help you to inform your conceptual site model, site investigation design, interrogate your SI data and produce informative spatial and temporal infographics and not just meaningless pages of data.

    QGIS 1: Building a QGIS project – the road to data visualisation (03 December 2019)

    QGIS 2: Solving & Visualising Contaminated Land Problems using QGIS (04 December 2019)

    QGIS 3: Creating Efficient Workflows for Contaminated Land Problems using QGIS (05 December 2019)

    Given the requirements of the British Standards Institute and the important role that the AGS data format plays in achieving a more efficient approach towards site investigation and development, there is little excuse for not investing a little bit of effort to learn how to gain maximum value from some of the great free and open source GIS tools available to us.

  2. Career long learning journey … reinforce, broaden horizons and develop new skills

    A career is a life long learning journey in which its important to reinforce what you know, broaden horizons and develop new skills along the way.

    LQM’s continued commitment to raising standards among practitioners and regulators on topics of timely relevance and new approaches to contaminated land management is reflected in the depth and breadth of face to face training courses and accessible online lie and recorded learning opportunities currently available.

    Similarly, the number of contaminated land products (software tools, publications, recorded tutorials and webinars) also continues to expand to meet different demands from clients and practitioners.

    The next few months are packed with a range of face-to-face and online training opportunities which have been conveniently listed below to help you find something of interest over the long dark autumn-winter days ahead!  Happy learning.

    Face-to-Face Courses (Nottingham)

    19 November 2019 Introduction to hydrogeological risk assessment for Contaminated Land
    03 December 2019 QGIS 1: Building a QGIS project – the road to data visualisation
    04 December 2019 QGIS 2: Solving & Visualising Contaminated Land Problems using QGIS
    05 December 2019 QGIS 3: Creating Efficient Workflows for Contaminated Land Problems using QGIS


    Equipe Group collaboration (Banbury, Oxfordshire)

    A new exciting collaboration with Equipe Training, providers of vocational training and continual assessment to all stakeholders in the geotechnical industry.

    04 February 2020 Contaminated Land in Geotechnical Practice
    18 February 2020 Sampling and Scheduling for Geoenvironmental Testing


    Professional Practice Webinars (Live Online webinars)

    (previously recorded webinars also available)

    This series aims to raise standards among practitioners and regulators on topics of timely relevance.

    18 October 2019 The Language of Risk
    15 November 2019 Bioavailability State of the Art
    13 December 2019 Green Remediation
    21 February 2020  Blowin’ in the Wind: Risk Assessment of Asbestos in Soil
    20 March 2020  We need to talk Part 2A – a crammer in Part IIa language


    Early Career Briefings (Live Online webinars)

    This series of webinars is aimed at practitioners and regulators, at all stages of their career long learning journey.

    06 December 2019 Toxicology 101
    10 January 2020 Geology 101
    07 February 2020 Data analysis and statistics 101


    LQM GIS web-bytes (QGIS for contaminated land applications, recorded tutorials)

    A quick and accessible way to pick-up some useful QGIS tips and tricks for your contaminated land work or a taster for one of our face-to-face courses.

    If you have a specific task or workflow you require then please let us know.

    Site Zoning Using Risk Assessment Criteria (18 mins)
    Viewing your Site Photographs (12 mins)
    Viewing your Borehole Logs (12 mins)


    GIS skills in Contaminated Land / Brownfield Sector

    Take the survey

    Survey Objectives:

    1. i) obtain industry practitioner viewpoint of the importance of GIS tools for every day work tasks
    2. ii) raise awareness of training initiatives to demonstrate the ability of developing staff data science skills to increase productivity and improve project outcomes
  3. LQM Tool recognised by international expert

    LQM are happy that our ‘Ternary Gas Composition Tool’ received a mention from Steve Wilson of EPG during his recent presentation on ground gases at the ‘Brownfield Land Wales 2019’ conference. But then it is based on research he published last year in conjunction with Ambisense.

    From the pings on our website, it must really have got the interest of practitioners in the audience who want to better understand their ground gas data and leverage its full potential and value. If you want to join them, find out more about the Ternary Gas Composition Tool and our full range of products and recorded webinars.

    Note: LQM have recently updated the Licence Agreement for all our software tools, including the Ternary Gas Composition Tool, to clarify that organisations with multiple offices need to purchase multiple copies/licences of the software.

    LQM Ternary Gas Composition Tool