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GasClam: The Past, Future and Present of Ground Gas Monitoring

Elliot Rosher, Product Specialist Manager




Who are Shawcity? Shawcity Ltd: • Privately-owned company based in

Oxfordshire • Over 40 years’ experience in

Health & Safety • In-house Service and Calibration centre • Hire option for most applications • Specialise in Health and Safety,

Occupational Health and Environmental Monitoring




Shawcity & The GasClam • Relationship with Ion Science and Shawcity • UK distributor for GasClam and Ion Science products • Large GasClam Hire Fleet for UK applications • On-going technical support and product training • Authorised GasClam Service and Calibration centre.

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• Continuous ground gas monitoring up to three weeks. • 5 point Gas Measurements (CH4, CO, CO2, VOC, H2S, O2) • Temperature, Borehole and Atmospheric Pressure • GasClam PC software to review data in graph formats

and adjust instrument settings • ATEX Approved • IP68 Rated • Discrete in ground monitoring • Reduces cost and time • 65,000 data points and set intervals

GasClam Technical Info




GasClam Case Study The Client’s Application: • Herefordshire Council are

currently using GasClam used to monitor potential landfill gas migrating from a closed landfill site, which in 2002 was determined as ‘contaminated land’ under Part IIA of the Environmental Protection Act 1990.




GasClam Case Study

Why choose GasClam and how is it used? • Site perimeter to monitor Methane,

Carbon Monoxide and VOCs • Portable, long-term solution to understand

gas levels exceeding the site boundary • Recording data points on an hourly basis • Every 28 days:

– Simple download of data for reporting – Simple maintenance:

Replacing filters and batteries.




GasClam Case Study Benefits to customer from using the GasClam: • “Helps us to review whether the gas extraction

system is working efficiently” • “Assesses whether the landfill gas is

degenerating from the site” • “Shows the factors that can influence

gas migration e.g. barometric pressure” • “We have saved time and money

throughout the project”

“The four clams are an essential tool for the ongoing assessment of the closed landfill site”




The Future of the GasClam?




GasClam 2 - Added Benefits

• Longer Battery life offering 3 months monitoring • Option to add flow monitoring with the unit • Advanced power management system • External power source • New software




Review of the GasClam

• Allows remote monitoring for long periods of time on 5 gas points (CO, CH4, H2S, O2 & VOCs)

• Easy to deploy and maintain throughout monitoring period

• Shows change of pressure readings in bore hole and atmospheric

• Allows users to download data and review in graph format with time and date

• Saves time & money.




Thank you. Any questions?

Elliot Rosher

Product Specialist Manager Shawcity Ltd.

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