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dc.contributor.authorTularam, GA
dc.contributor.authorDobos, J
dc.contributor.editorPatrick Macgregor
dc.date.accessioned2017-05-03T14:23:44Z
dc.date.available2017-05-03T14:23:44Z
dc.date.issued2005
dc.date.modified2009-12-08T07:55:43Z
dc.identifier.issn0818-9110
dc.identifier.urihttp://hdl.handle.net/10072/4374
dc.description.abstractCHANGES IN SUBSURFACE WATER QUALITY DURING COASTAL CANAL ESTATE CONSTRUCTIONS Gurudeo A. Tularam1 and Julian Dobos2 1Lecturer and 2Postgraduate student, Faculty of Environmental Sciences, Griffith University, Brisbane Australia ABSTRACT Construction of coastal canal estates has increased in recent times in Australia. The lowering of the watertable is required during certain canal construction periods. Coastal low lands contain can contain pyrites and associated potential acid sulfate soils. Dewatering or lowering of the water table to allow for dry excavation, may permit oxidation of the pyritic soil causing acid generation. Saline intrusion may also occur via lowering of the watertable. A paucity of literature on coastal canal estates led to this study, which investigated the subsurface water quality during construction of a canal estate. Groundwater depth, pH, dissolved oxygen, titrated acidity and salinity were monitored on site at the Lake Kawana development in Queensland, Australia. Groundwater monitoring was carried out before, during and after the dewatering program. Data analysis showed that water depth increased during dewatering activities and decreased after re-flooding. The dissolved oxygen, titrated acidity and salinity levels rose during periods of increased groundwater depth, while pH levels fell. The increase in oxygen availability and the associated increase in acidity, may lead to dissolution of heavy metals, but monitoring data was lacking in this regard. Since salinity may increase due to other close by saline surface water bodies, further studies are required to understand subsurface flow patterns during dewatering operations. Computer simulation models could be developed to help determine the flow of contaminants during dewatering and re-flooding operations.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherInstitute of Engineers
dc.publisher.placeAustralia
dc.publisher.urihttp://www.australiangeomechanics.org/journal/
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom85
dc.relation.ispartofpageto94
dc.relation.ispartofissue3
dc.relation.ispartofjournalAustralian Geomechanics Journal
dc.relation.ispartofvolume40
dc.rights.retentionY
dc.subject.fieldofresearchCivil engineering
dc.subject.fieldofresearchResources engineering and extractive metallurgy
dc.subject.fieldofresearchHistory, heritage and archaeology
dc.subject.fieldofresearchcode4005
dc.subject.fieldofresearchcode4019
dc.subject.fieldofresearchcode43
dc.titleChanges in subsurface water quality during coastal canal state constructions
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.date.issued2005
gro.hasfulltextNo Full Text
gro.griffith.authorDobos, Julian
gro.griffith.authorTularam, Gurudeo A.


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