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Results may be influential in determining whether attenuation through infiltration can<br />

be considered an acceptable method of pollution prevention under corrals on freely<br />

drained sites, <strong>as</strong> an alternative to lining. The leachate pollutant concentrations are at<br />

levels that would be considered indicative of very effective treatment, for example,<br />

from constructed wetlands.<br />

ACNOWLEDGEMENTS<br />

We acknowledge the support of SEERAD in funding the research.<br />

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IDEXX Laboratories Inc. (2001). http://www.idexx.com/Water/Products/Colilert/<br />

index.cfm<br />

Krapac IG, Dey WS, Roy WR, Smyth CA, Storment E, Sarget SL and Steele JD (2002).<br />

Impacts of swine manure pits on groundwater quality. Environmental Pollution 120,<br />

475–492.<br />

Vinten AJA, Dougl<strong>as</strong> JT, Lewis DR, Aitken MN and Fenlon DR (2004). Relative risk of<br />

surface water pollution by E. coli derived from faeces of grazing animals compared<br />

to slurry application. Soil Use and Management 20, 13–22.<br />

Vinten AJA, Donnelly S, Ball BC, Crawford CE, Sym G, Ritchie RM and Parker<br />

JP (2006). A field trial to evaluate the pollution potential to ground and surface<br />

waters from woodchip corrals for overwintering livestock outdoors. Soil Use and<br />

Management (in press).<br />

258

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