Title: Site Characterisation in Support of Monitored Natural Attenuation of Fuel Hydrocarbons and MTBE in a Chalk Aquifer in Southern England (Case Study Bulletin 1) 
Resource Type: document --> technical publication --> report 
Country: United Kingdom 
Year: 2002 
Author 1/Producer: Thorton, Steve., Wealthall, Gary. (CL:AIRE CSB1) 
Other Authors/Producers: CL:AIRE 
Author / Producer Type: Professional / trade / industry associations, institutes or networks 
Publisher: CL:AIRE 
Report / download web link (=direct link): http://www.claire.co.uk/casestudy.php  
Format (e.g. PDF): PDF 
Size: (e.g. 20mb) 265 
EUGRIS Keyword(s): Contaminated land-->Contaminants-->MTBE
Contaminated land-->Remediation options-->MNA
Contaminated land-->Soil and groundwater processes-->Contaminant hydrology
Contaminated land-->Soil and groundwater processes-->Hydrogeology
Short description: This Case Study Bulletin describes a research project, which was carried out to determine whether monitored natural attenuation was a viable option for managing fuel hydrocarbon contamination in a chalk aquifer in southern England. 
Long description: The research, which was carried out from February 2000 to March 2001, was undertaken by the University of Sheffield on behalf of TotalFinaElf at a petrol filling station site. The study was commissioned following the accidental release of approximately 55,000 L of unleaded petroleum from a ruptured underground storage tank in February 1999. The spilled petroleum fuel contained two ether oxygenates, methyl tertiary-butyl ether (MTBE) and tertiary methyl-amyl ether (TAME), at oncentrations of 2.88 % v/v and 1.65 % v/v, respectively. As a result of the spill, the unsaturated zone beneath the site has been contaminated with petrol which belongs to a class of contaminants known as light non-aqueous phase liquids (LNAPL). The petrol has migrated below the water table at 20 m below ground level. Dissolution of the LNAPL has resulted in contamination of the saturated zone with a range of petroleum hydrocarbons that include diesel range hydrocarbons (DRHC); benzene, toluene, ethylbenzene, xylene (BTEX); MTBE; TAME, and other aromatic compounds. 
Submitted By: Mr John Henstock WhoDoesWhat?      Last update: 26/02/2007