To win permission to quarry Straitgate Farm, Aggregate Industries entered into a legal agreement to monitor the private water supplies of surrounding properties for the lifetime of the development.
Part of this agreement also stipulates that 12 months of chemical analysis of water supplies be performed before any quarrying starts, to produce a baseline so that any potential changes in groundwater quality from future mineral workings can be detected.
Aggregate Industries’ water consultants BCL Hydro are now nine months into this monitoring period.
In an email to us last month, the consultants confirmed that all the samples taken for analysis are "untreated groundwater".
It stands to reason. Chemical analysis is meant to provide an accurate baseline of the natural quality of the groundwater, not a baseline that is masked or altered by treatment systems.
It now transpires, however, that "untreated groundwater" is not what’s being sampled from at least three of the 19 or so properties being monitored.
It looks like Aggregate Industries and its consultants have fallen at the first hurdle, before any quarrying has even started.
The nine months of data collected from these properties is invalid. The owners do not have the protection afforded to them by an accurate 12-month baseline of untreated groundwater data, independent of their treatment process, to evidence any potential future claim for "derogation, contamination or interference" to their supply.
Devon County Council has been informed.