jubilee campus land reclamation. site investigation desk research desk research to identify most...
TRANSCRIPT
Jubilee Campus Land Jubilee Campus Land ReclamationReclamation
Site InvestigationSite Investigation
Desk researchDesk research to identify most to identify most
probable areas of probable areas of contamination e.g. contamination e.g. previous site useprevious site use
On-site surveyOn-site survey Spot sampling using Spot sampling using
standard gridsstandard grids
Previous Land UsesPrevious Land Uses
Coal MiningCoal Mining Railway SidingsRailway Sidings CanalCanal Waste Destruction FacilityWaste Destruction Facility Tractor DepotTractor Depot Timer YardTimer Yard Recently Owned by Raleigh Industries Recently Owned by Raleigh Industries
Ltd.Ltd.
Open shafts/expanses undergroundOpen shafts/expanses underground Slag heapsSlag heaps Heavy oils e.g. fuelsHeavy oils e.g. fuels Light oils e.g. bicycle lubricantsLight oils e.g. bicycle lubricants Heavy metalsHeavy metals Wood treatment chemicals e.g. creosoteWood treatment chemicals e.g. creosote Pile of bricks that used to be buildingsPile of bricks that used to be buildings
Possible Problems On the Possible Problems On the SiteSite
Proposed DevelopmentProposed Development
Formal CampusFormal Campus Lake/wetlandLake/wetland Existing landscape tree belt and new Existing landscape tree belt and new
landform as wildlife refuge and visual landform as wildlife refuge and visual screenscreen
Metal TreatmentMetal Treatment Metal contaminated soil is treated using the combination of Metal contaminated soil is treated using the combination of
electrokinetics and phytoremediationelectrokinetics and phytoremediation Electrokinetics is used to remove metals from deep soil and Electrokinetics is used to remove metals from deep soil and
ground water ground water Phytoremediation is a process that uses plants to remove, Phytoremediation is a process that uses plants to remove,
transfer, stabilize, and destroy contaminants in soil and transfer, stabilize, and destroy contaminants in soil and
sediment.sediment.
Fuel/Oil TreatmentFuel/Oil Treatment
1.1. Soil is washed in situ, other additives may be added to Soil is washed in situ, other additives may be added to improve washingimprove washing
2.2. Contaminated water is removed and further treatment Contaminated water is removed and further treatment conductedconducted
3.3. An in situ bioremediation process is usedAn in situ bioremediation process is used
4.4. Nutrients and air may be pumped in to the site if Nutrients and air may be pumped in to the site if necessary to enhance intrinsic bioremediationnecessary to enhance intrinsic bioremediation
Problems With Lake AreaProblems With Lake Area
Results of sampling showed very high pH Results of sampling showed very high pH values and excessive salinityvalues and excessive salinity
High levels of boron, copper, nickel and High levels of boron, copper, nickel and zinczinc The high pH values make these metals relatively The high pH values make these metals relatively
immobile thus immobile thus electrokinetics and phytoremediation electrokinetics and phytoremediation methods proved unsuitablemethods proved unsuitable
Lake AreaLake Area Cut/fill method used for lake area.Cut/fill method used for lake area.
Material removed was stored in-situ for Material removed was stored in-situ for possible treatment and reusepossible treatment and reuse
A bentonite liner was used to retain A bentonite liner was used to retain water and prevent ingress of water and prevent ingress of contaminantscontaminants
Rainwater is now collected from all Rainwater is now collected from all impervious areas of the site and stored in impervious areas of the site and stored in the lakethe lake
Solutions Used for the Solutions Used for the Remainder of the siteRemainder of the site
A cut/fill balance ensuring all excavated A cut/fill balance ensuring all excavated materials remained on-sitematerials remained on-site Cut material used for landscaping of other areas of Cut material used for landscaping of other areas of
site, with a layer of clean top soil added.site, with a layer of clean top soil added. Careful selection of plants and trees was required, Careful selection of plants and trees was required,
depending on their rooting habitsdepending on their rooting habits Enclosure of unsuitable materials to allow Enclosure of unsuitable materials to allow
their use in landscape areastheir use in landscape areas To prevent further contamination of To prevent further contamination of
surrounding soil a geocomposite clay liner surrounding soil a geocomposite clay liner was usedwas used
ConclusionConclusion
Careful consideration of rainwater should Careful consideration of rainwater should have been taken into account, and have been taken into account, and thereforetherefore The University of Nottingham has now entered The University of Nottingham has now entered
into constant monitoring of ground conditions into constant monitoring of ground conditions around the site.around the site.
Through these measures a sustainable Through these measures a sustainable habitat was created in Nottingham on a habitat was created in Nottingham on a former industrial siteformer industrial site