These were my suggested lines of investigation to Rudra yesterday:
· Is the anomalous sample from greater depth? If so possible poorly flushed water?
· Does the borehole / well have a different water level response (or if you have undertaken falling head tests is the borehole much less permeable)? If so possible poorly flushed water?
· Could the borehole be contaminated by a septic tank, sewage or manure pile (this could be the cause of high alkalinity and would also likely have low dissolved oxygen and likely elevated organic carbon)
Nick
Nick Rukin
RUKHYDRO Limited
Web: www.rukhydro.co.uk<http://www.rukhydro.co.uk/>
From: The list of the Hydrogeological Group of the Geological Society [mailto:[log in to unmask]] On Behalf Of Helen Robinson
Sent: 22 November 2018 2:03 PM
To: [log in to unmask]
Subject: Re: High values in Groundwater samples
I agree with Michael, more information would be useful.
Also what are the surrounding lithologies, geological structures and water temperatures.
Regards,
Helen
Helen Robinson MGeol, FGS
PhD candidate & UK Ambassador WING
School of Engineering
James Watt South Building
University of Glasgow
Glasgow
G12 8QQ
On 21 Nov 2018, at 19:31, Michael Price <[log in to unmask]<mailto:[log in to unmask]>> wrote:
I think we need a bit more information.
What is the sampling point – spring, borehole, dug well – and the depth?
What is the land use around this and the other points?
How does it relate topographically to the other sampling points – where would it fit in a flow system?
Regards,
Mike
From: The list of the Hydrogeological Group of the Geological Society [mailto:[log in to unmask]] On Behalf Of Rudra Mohan Pradhan
Sent: 21 November 2018 17:39
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: High values in Groundwater samples
Dear all,
I am really curious to know about 1-2 of my Groundwater sample analytical results. These samples shows higher values of Bicarbonate, High EC ~4500 and other major ions with high values.
The study area is granitic terrain. Nearby areas sample showing normal values but when I am collecting samples of that specific place the data I am getting is higher (both the seasons).
What could be the reason?
Thank you.
Regards,
Rudra M Pradhan
IIT Bombay
--
Regards,
Rudra Mohan Pradhan
Research fellow|Structural Geology Lab|Department of Earth Sciences
Indian Institute of Technology, Bombay|Powai, Maharashtra-400 076, India
Tel: +91-22-25724278(O)|+91-98977 54554/+91-94386 32618(P)
Research Page: Google Scholar<https://scholar.google.co.in/citations?user=TSKWpcgAAAAJ&hl=en> | ResearchGate<https://www.researchgate.net/profile/Rudra_Mohan_Pradhan>| ResearcherID<http://www.researcherid.com/rid/P-7321-2015>
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