10:25 Examining the Risk of Carbon Dioxide Arising from Disused Mineral Mines and the Implications: Recent Findings
RSK was appointed by the Scottish Government to carry out a research project into the prevalence of CO2 from disused mineral mines and the resulting risk to residential buildings, which was published recently. This talk will cover:
Introduction and context to the Scottish Government research project
The Gorebridge incident in Scotland and other identified incidents of mine related CO2 emissions in the UK and beyond
The nature of abandoned mine-workings and circumstances where risks related to CO2 emissions are raised
Key findings of the research report including expert views on the adequacy of current standards and guidance versus use of mandatory gas protection measures in coalfield areas
The role of uncertainties including groundwater rise, climate change effects and cumulative development
Report recommendations including proposed changes to planning and building standards and guidance, further research requirement and wider implications for all UK coalfields beyond Scotland
10:50 Q&A followed by ad break, sponsored by Groundsure
11:10 Case Study: Innovative and site-specific ground gas investigation and assessment at Whitecliffe, Kent
This case study will explain how the latest ground gas investigation and risk assessment methods have added significant value on a major development project. The site is a 260-hectare former chalk quarry with consent for residential development with over 6,000 homes. Land forming earthworks are in progress, with the reuse of millions of cubic metres of soil. The challenging ground conditions have led to unique ground gas considerations. While the initial cost of investigation and assessment increased to accommodate the innovative approach, the long-term benefits will dwarf the initial investment.
The presentation will explore:
The importance of the conceptual model in defining the gas risk assessment
How continuous monitoring techniques and advanced data analytics can be used
The benefit of multiple lines of evidence in robustly demonstrating conclusions and supporting regulatory approval to novel approaches that go beyond published guidance
The potential tension between good science and commercial risk
11.35 Examining the Role of Sewers as a Preferential Pathway in Vapor Intrusion Risk Assessment
The role of sewer systems as preferential pathways for vapour intrusion is poorly understood. As a result, these pathways are often not considered when developing vapour intrusion risk assessment or mitigation strategies. This presentation will explore the importance of sewers as preferential pathways in buildings and how they should be accounted for when developing the CSM.
14.50 Q&A followed by ad break, sponsored by In-Situ
15.05 Optimising Remote & Continuous Monitoring Technology to Achieve Real-Time, Targeted Data Collection
When most environmental and remediation professionals think of telemetry, they think complicated, expensive, and unnecessary. However, recent advances in wireless data collection and data management services have changed the game. Remote monitoring and data management is now easier and more cost-effective and can improve data quality while facilitating rapid decision making and reducing project costs.
15.35 Evaluating and Remediating a Complex Contaminated Groundwater Plume
This case study presents the results of over twenty years of the assessment and remediation of one of the largest commingled chlorinated VOC plumes in the Midwestern United States. The plume was sourced from a variety of industries along its 7.5 km length and had adversely affected the community's water supply. The presentation will:
Describe methods that were used to leverage existing data sets in the development of conceptual site models, direct ongoing assessment efforts, and identify local source areas in a commingled plume
Discuss ways to identify, manage, and/or eliminate the various risks to both the public and your client so that assessment and remediation can move forward in a measured manner
Provide insight into a wide variety of technologies (Excavation, ISCO, AS/SVE, Thermal Desorption, etc) that have been used to remediate source areas throughout the plume.
16.00 Developments in BioGeoChemical Reagents for Treatment of Chlorinated Solvent and Pesticide Contaminated Waters: Research & Case Studies
Following two decades of the worldwide application of EHC® reagent to treat contaminated groundwaters and saturated soils by physical, chemical and microbiological means, two new reagents (EHC® Plus & GeoFormTM) have been introduced by PeroxyChem to the European & American markets; these combine multiple reaction pathways to adsorb, reduce & destroy particularly persistent chemicals.
This presentation will cover the detailed science behind the products' development, their provenance in bench scale results (in conjunction with groundwater and soils provided by, and monitored alongside, four US Consultants), and then provide early results from three applications in the UK & Italy over the past years.
16.25 Q&A followed by ad break, sponsored by PeroxyChem
SESSION FIVE, 20 MAY MORNING
GroundWater Spatiotemporal Data
Analysis Tool (GWSDAT)
10:00 GWSDAT: A Tool for Analysing Groundwater Quality Data and Contamination Plumes to Achieve Optimum Groundwater Monitoring and Remediation
GWSDAT is a user friendly, open source, decision support tool for the analysis and reporting of groundwater monitoring data. The software can handle large data sets with multiple monitoring locations, variable sampling events, and differing chemical constituents.
GWSDAT has been used extensively in the assessment of soil and groundwater conditions in numerous locations world-wide. This will demonstrate its use as a tool to achieve optimum groundwater monitoring and remediation.
10:30 Q&A followed by ad break, sponsored by Cox Colvin
10.50 Achieving a Better Understanding of What is Underground: Presenting Two Collaborative Projects
The Outcome of the National Underground Asset Register Pilots
Did you know... that there are 1.5 million kilometres of underground services in the UK all working hard to keep our country supplied with water, gas and electricity. With all these assets and different companies involved working beneath the ground is both complex and inefficient. The estimated economic cost of accidental strikes on underground pipes and cables is £1.2 billion a year. Workers who strike gas pipes and electric cables by mistake can also put themselves and others in danger of death or serious injury. These are just two of the reasons why the Geospatial Commission launched our National Underground Assets Register Pilots, to make it easier to find out what exactly is beneath the ground.
The Dig-To-Share Initiative: “Unlocking”, and Increasing the Availability of,
The Dig-To-Share project started life as a 1 year project aimed at unlocking the vast quantities of borehole data locked away inside a system that has no clear central repository or submission routes. By utilising the BGS’ national archives as that repository, and encouraging people to share their data in a more collaborative way, the Dig-To-Share Team hope to overcome the difficulties associated with sharing data (embedded in contract liabilities, ownership of data) and help steer the conversation in a more open way. The project aimed to unlock 10,000 borehole in its start-up year. Listen in to find out what we have achieved so far, and how the project has progressed in the 2nd year of life. The talk will also touch on how to access the data through software and portals and what data is stored. And no doubt we’ll also touch on the thorny issue of confidentiality…
Maximising the Potential of Your Site & Project Data
14.30 Streamlining Assessment of Environmental & Geo-Technical Risks to Improve Land Use & Development Decisions
As geoenvironmental and geotechnical characteristics at sites are so variable the Consultant’s role is to help their client to balance certainty and the cost of acquiring information reach a suitable level of certainty. With the explosion in technology, new national data sets being created and ways of using them are being applied to help get ahead of the uncertainty and allow good decisions to be made early in a development of purchase.
Ceri will take a look at open data, some of the new data in development and some of the ways familiar data is being used to help the decision-making process.
14.55 Using the New CIRIA Asbestos App to Improve the Identification & Management of Asbestos on Site
This presentation will outline the potential uses of an app that has been developed in conjunction with industry to provide a smart-phone based tool that aids in the challenges of spotting suspected asbestos in soils and provides first-response guidance on what to do as a result. Feedback from early adopters of this App provides insight as to how the App is working in practice.
15.20 Q&A followed by ad break, sponsored by Groundsure
15.35 Techniques for Improving & Verifying the Quality of Data Collection
The benefits of technology and new digital techniques in facilitating data collection are being increasingly recognised. However, it does not matter how advanced your technology is if there is a fundamental problem with data quality. Inputting inaccurate data into your modelling will have a significant impact on risk assessment and future decision making. Trying to incorporate historical, desk-based information into new software programmes can be difficult and possible errors and limitations in the data can be overlooked. This presentation will look at these challenges recent industry examples to summarise the challenges presented and suggest solutions for best managing them to ensure accurate and reliable data collection and input.
10.50 Case Study: High-Resolution Geological Characterisation of the Lower Thames Crossing (LTC), SE England
This presentation describes the whole-system approach the British Geological Survey (BGS) undertook in collaboration with LTC-CASCADE to provide a high resolution geological characterisation of the tunnel zones and associated infrastructure. A number of novel techniques were deployed to identify and mitigate against surface and subsurface hazards.
Flint distribution mapping and characterisation using field measurements, logging, laser scanning and 3D modelling techniques
Passive seismic surveying ('Tromino') for rapid non-invasive measurements of rockhead and other major geological horizons
3D geological modelling of the of the artificial, superficial and bedrock deposits
Reporting on BGS held data, including geohazards, engineering and historical data - knowledge exchange