EA minded to permit waste water re-injection at Surrey oil site
The Environment Agency is seeking public comments on its proposal to allow Angus Energy to dispose of waste water underground at the Brockham oil site in Surrey.
Despite local concerns, the EA said it was minded to permit water re-injection at Brockham.
In a draft decision document, the EA said it was satisfied that risks had been identified and that operating procedures were “sufficient to mitigate the risk to groundwater”. There was no need for groundwater monitoring, it said.
Waste water, also known as produced or formation water, often comes to the surface during oil and gas extraction.
It is usually very salty and may be radioactive. Companies seek to re-inject it back underground to avoid expensive water treatment and to support the pressure in the hydrocarbon reservoir, improving hydrocarbon flows.
Angus Energy has previously said it would give up the Brockham site if it could not re-inject waste water.
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