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ORP Field Measurements Reporting Redox Potential (E h ) Correctly

Saturday, 7 April 2018 14:25:01 Europe/London

ORP Field Measurements Reporting Redox Potential (Eh) Correctly

Many practitioners are familiar with using multiparameter water quality meters in the field which incorporate ORP (oxygen-reduction potential) sensors. But ORP measurements are often reported from field probe measurements without the necessary conversion made to standardise readings to a common reference

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Posted in Pete's Blog By News

New Research Proposes Changes to Low Flow Guidance

Friday, 6 April 2018 15:50:28 Europe/London

Using screen volumes to guide low flow purging sampling in DNAPL source zones

A new paper published in the Journal of  Contaminant Hydrology (McMillan et al 2018) has identified the need to be cautious when using indicator water quality parameters to indicate the stability of groundwater chemistry during purging

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Posted in Pete's Blog By News

REDR Drilling Course 2018

Tuesday, 27 March 2018 23:18:06 Europe/London

8 to 11 May 2018

I’m currently planning my contributions to the Redr (Registered Engineers for Disaster Relief) Drilling Course which runs this year from 8th to 11th May.

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Posted in Pete's Blog By News

Planning for Groundwater Level Monitoring in Bangladesh

Tuesday, 30 January 2018 00:00:37 Europe/London

Trialling a new Bluetooth communication system with dataloggers

My last blog on the work of Groundwater Relief (www.groundwater-relief.org ) in Bangladesh generated considerable interest. So, here’s an update along with some observations on new equipment for downloading data from water level logging devices.

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Posted in Pete's Blog By News

Siting and Testing of Boreholes in Bangladesh

Monday, 15 January 2018 22:25:29 Europe/London

Groundwater Relief assess water supplies for Rohingya Refugee Camps

During November 2017, Groundwater Relief sent two hydrogeologists to Cox's Bazaar, Bangladesh to support the International Organisation for Migration (IOM), to carry out a preliminary assessment of groundwater availability at two refugee camps (Leda and Kutupalong).

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Posted in Pete's Blog By News

Groundwater Sampling – Are we doing it right?

Wednesday, 29 November 2017 21:44:14 Europe/London

Groundwater Sampling – Are we doing it right?

I was recently invited to lead a groundwater sampling workshop at the Janet Watson meeting of the Geological Society on 7th November 2017.

This was a fascinating 2-day conference covering everything from conceptual models and risk assessment to treatment technologies, guidance, and regulation. It also addressed the need for us all to rationalize and explain risk in a coherent and understandable way to a non-technical and risk-averse society. 

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Posted in Pete's Blog By News

Big Data and Barometric Compensation

Thursday, 2 November 2017 14:53:58 Europe/London

Is global barometric data accuracy good enough?

I was recently sent some information about a research group working on the design of a low cost data logger system for measuring water levels. This is conceptualised as a total pressure logger, programmed and managed using smartphone technology.

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Posted in Pete's Blog By News

Monitoring a Remediation Process in Real-Time

Friday, 8 September 2017 17:50:35 Europe/London

High-resolution monitoring saves time (and money!)

It’s not often I get excited by new products, but I was recently given access to some real-time monitoring data collected by the new In-Situ Aqua TROLL 600 multiparameter water quality sonde, which has really excited me with the possibilities of the instrument.

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Posted in Pete's Blog By News

Electrical Conductivity Validation and Salinity A Cautionary Tale?

Thursday, 3 August 2017 21:15:09 Europe/London

Electrical Conductivity Validation and Salinity

A Cautionary Tale?

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Part 2: Inconsistent guidance

In Part 2 of his article on the guidance for Low Flow Sampling hydrogeologist Peter Dumble highlights some of the variances between official publications and some notable research.

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Posted in Pete's Blog By Peter Dumble
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