LANDFILL MANAGEMENT
Get accurate with ground gas monitoring
Shawcity’s Gas Clam ground gas moni- toring system can be installed in an existing or new borehole on a site and left to continuously monitor gas levels over several months. It can monitor methane, carbon dioxide, oxygen, bore- hole and atmospheric pressure on ex- landfill sites. However, there are options to include hydrogen sulphide, carbon monoxide, VOCs using PID technology and even a water level transducer to measure water table movement. This allows the user to monitor all of these parameters in one unit and at regular intervals over a specific monitoring period.
A local authority in the southern region of the UK is using a fleet of Gas
Clams on a development built in the mid 1990s over a former landfill site. A continual monitoring program had been in place using spot sampling technology and a level of gas had been monitored on one borehole, suggesting there were some residual gas issues on the site and local properties could be at risk. It was decided this site needed fur- ther investigation – key monitoring points were identified and the Gas Clams were deployed over a six month period with data retrieved at regular intervals. The quality of the time series data provided revealed that gas levels were at safe sustainable levels which would not pose any risk to residents. Gas Clam is also being used by
developers before construction allowing them to create quality plans and predict with accuracy the point at which exist- ing brownfield sites can be developed. The existing methodology requires up to 24 months of monitoring using spot sampling on multiple occasions in a month depending on the risk level of the receptor and the site. However, time series data has been used to reduce this required monitoring period to as little as one month. As the Gas Clam is continuously in position and monitoring at regular intervals it is possible to establish with little doubt if there is any risk.
www.shawcity.co.uk
Shawcity’s Gas Clam system can monitor continuously on landfill sites
THE UK’S LEADING PROVIDER OF ENVIRONMENTAL INFORMATION
At Faversham House Group, we’ve developed an impressive track record in providing environmental information for specialist business audiences.
We publish an extensive portfolio of market-leading magazines: • Sustainable Business • Water & Wastewater Treatment • Local Authority Waste & Recycling • WET News • International Desalination & Water Reuse Quarterly
We run water, waste and environmental websites: •
www.edie.net •
www.lawr.co.uk •
www.web4water.co.uk •
www.desalination.biz
We also organise a series of specialist water & environmental events in the UK and Eire: • Sustainabilitylive! incorporating ET, ES, NEMEX, International Water Exhibition and Brownfield Expo • Water Industry Achievement Awards • Resource Ireland • Water NI Conference, Belfast
To find out how to make our environmental expertise work for you, please contact the group heads:
Angela Himus , UK magazines +44 (0) 20 8651 7164
angela.himus@fav-house.com
International Desalination Water Reuse Quarterly +44 (0) 20 8651 7100
Carl Myers, edie website +44 (0) 20 8651 7134
carl.myers@
fav-house.com
Donna Bushell, Event Director SustainabilityLive! +44 (0) 20 8651 7112
donna.bushell@fav-house.com
October 2010 Local Authority Waste & Recycling
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