Peter Dumble is an independent hydrogeologist with a specialist interest in groundwater monitoring methodology and research. Since 1994 he has been involved with the delivery of a series of highly respected groundwater monitoring training courses in the UK and in the development of monitoring guidance for the Environment Agency and others. He is a co-founder and was for 20 years the Managing Director of the market-leading groundwater equipment supplier, Waterra UK Limited, purchased in 2010 by In-Situ Inc. His practical experience using instrumentation in the field extends from the UK and Ireland to Canada, the Middle East and West Africa. He writes a technical monthly blog on groundwater monitoring and related issues for In-Situ Europe at http://www.in-situ-europe.com/news/cat/Peter-dumble-blog/.
Groundwater remediation: real-time monitoring of oxidizing reagent depletion
This case history demonstrates how real-time high-resolution monitoring of groundwater quality improved the management and control of a chlorinated solvent remediation programme deploying oxidizing reagents. Changes in TDS, pH, DO and ORP in a 6-month period following injection provided evidence of: (1) the immediate impact on groundwater quality; (2) the time when the oxidising agent was spent; and (3) the trend in water quality as it reverted to pre-injection conditions.
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