43 Stow Road Wiggenhall St Mary Magdalen King's Lynn Norfolk PE34 3BX

Conversion of Former Smithy to a Dwelling, St Mary Magdalen, King’s Lynn, Norfolk

Case Study Reference: 14-03-02

Planning Authority: Borough Council of King's Lynn & West Norfolk

Planning Reference: 11/00275/F and 14/00690/F


In order to discharge the contaminated land planning condition attached to the decision notice for the proposed development Demeter Environmental were commissioned to prepare the reports to discharge the condition.

The fist stage was to prepare a desk study report (can be accessed here), which identified from a review of historical O.S. maps the site had been previously used as a smithy. The walkover identified made ground across the site and the building was being used as a workshop / shop.

Due to the potential issues on the site a Phase II intrusive investigation was proposed (the memo accepting the proposals can be accessed here),  in the desk study report and once the proposals had been accepted the Phase II investigation was started.

The Phase II investigation was undertaken in April 2014 (can be accessed here) and comprised of the excavation of a number of trial pits across the site, the subsequent chemical analysis and quantitative risk assessment identified that the made ground on the site posed a risk to human health, water mains and concrete. The memo accepting the Phase II report can be accessed here.

In order for the development to proceed the methodology of how the remediation would be undertaken and validated (Phase IIIa Implementation Plan) needed to be approved, which can be accessed from here. Confirmation that the remediation methodology was approved can be accessed here.

The validation of the remediation was undertaken during the construction phase of the development, the Completion Report was submitted with 14/00690/F  as a new application was submitted for the site. Both the completion report and confirmation of the acceptance of the report is given with 14/00690/F.

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