Awarded
UKSBSRE150427 - North West England Shallow Borehole Project
Descriptions
The Natural Environment Research Council (NERC), through its centre/survey the British Geological Survey (BGS – known hereafter as “The Authority”), invites tenders for the provision of drilling services to support project monitoring and research activities. The purpose of the project is to improve the understanding of movement of fluids and possible chemical changes in aquifers and overlying strata. It is planned that the work shall be carried out at six sites in total to the south of Pickering, around Kirby Misperton, North Yorkshire. If the preferred sites are not accessible to The Authority, any alternative site shall be in the area of a radius of approximately 5 miles of the above. At the sites, a pair of boreholes shall be required to provide: a.Improved understanding of the superficial (‘Drift’) geology, b.Sample returns from the boreholes to be sub-sampled and processed, c.Pairs of completed boreholes to be used as monitoring boreholes for scientific purposes. It is planned to drill the pairs of boreholes from Ground Level (GL) to a Total Depth (TD) of approximately 40m and 20m adjacent to each other (within 5m, see Section 4 below and “Site Conditions”). On reaching TD the deeper boreholes may be geophysically logged, before being completed. Suitably specified permanent casing will be required in the upper section to prevent collapse and 100mm internal diameter plastic casing with a 2m slotted interval with suitably graded gravel packing in the lower part of the boreholes. Geophysical logging and any water sampling will be done by The Authority, using their own equipment.
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Tender Regions
CPV Codes
76300000 - Drilling services
76340000 - Core drilling
Keywords
drilling operations
borehole construction
rotary drilling
well boring services
rig drilling work
exploratory drilling
subsurface penetration
geotechnical drilling
drilling platform services
drill site operations
rock core sampling
geological core extraction
subsurface core drilling
mineral core collection
geological sample drilling
structural core analysis
stratigraphic coring
core sample retrieval
core logging services
lithological sectioning
Tender Lot Details
2 Tender Lots
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Possible Competitors
1 Possible Competitors
