Ground Gas Risk Assessment - more than calculating a GSV

This training course will help ground gas risk assessors understand the risk assessment process for ground gas and how it is important to look beyond gas monitoring data to asses risk using a multiple lines of evidence approach.

The course will be based on the recent guidance on ground gas risk assessment published by the NHBC Foundation (NF94, Hazardous Ground Gases – an essential guide for housebuilders) and ASTM  (E2993-16 Standard Guide for Evaluating Potential Hazard as a Result of Methane in the Vadose Zone).

You will gain an understanding of the key points in documents direct from the authors. At the end of the training you should understand the how a good preliminary risk assessment can determine whether or not gas monitoring is required; the key elements of a good ground investigation design to avoid problems with results later on; and how good risk assessment using multiple lines of evidence can reduce risk of remove the need for gas protection.

It will explain how more advanced methods such ternary plots of gas data and modelling gas flow can provide important and useful lines of evidence. It will also explain how the use of continuous monitoring and more advanced screening methods such as those in Ground Engineering 2019 (Risk and Reliability in Gas Protection Design – 20 years on: Parts 1 and 2 The course will include many examples from real sites. Unique course content and if there is one training course you attend on ground gas this should be it.

Amy Juden

Amy is Head of Geoenvironmental at EPG. She is a chartered geologist and contaminated land specialist with over ten years’ experience in the brownfield redevelopment industry. Amy has specialist skills in site conceptualisation, geoenvironmental ground investigation, and contaminated land risk assessments. Amy is a specialist in ground gas risk assessment, she delivers training for the Geological Society on methane and radon ground gas geohazards and is one of the authors of NHBC Foundation Publication N94. Amy served three years as a judge for the Brownfield Awards and is also a committee member for the Yorkshire Contaminated Land Forum.

Steve Wilson

Steve is a recognised international expert on ground gas. He is a Chartered Civil Engineer and a UK Registered Ground Engineering Adviser (ROGEP). He is also a Society for Brownfield Risk Assessment Accredited Risk Assessor (ASoBRA) for ground gas and vapour intrusion and a CL:AIRE accredited Specialist in Gas Protection Verification (SGPV). He has 30 years experience of assessing ground gas and VOC risk and design of mitigation schemes for developments. This includes assessment of gas and VOCs from sources such as various types of landfill sites, coal mines and oil and gas wells. He has contributed to British Standards on ground gas assessment and design for developments and also NHBC, CIRIA and CL:AIRE reports (bodies recognised for producing independent industry guidance on ground gas for developments) including NHBC Foundation Publication N94 and CIRIA C801 and was on the drafting committee for the 2023 revision of ASTM E2993-16 Standard Guide for Evaluating Potential Hazard as a Result of Methane in the Vadose Zone.