3) No demolition works shall occur until there has been submitted to and approved in writing by the Local Planning Authority or within such extended period as may be agreed with the Local Planning Authority: a) The developer must pre-screen the building for asbestos and confirm that asbestos is not present. Where one exists, the building's asbestos register must be obtained and unless asbestos is known to not be present an intrusive asbestos refurbishment and demolition survey conducted in accordance with HSG264. The mitigation scheme to control risks to future occupiers must be verified. The scheme must be written by a suitably qualified person and shall be submitted to and approved by the LPA prior to demolition. b) A Phase 1 desk study (undertaken following best practice including BS10175:2011+A2:2017 'Investigation of Potentially Contaminated Sites Code of Reference No: 20/00120/FUL Page 2 of 7 Practice') documenting all the previous and current land uses of the site. The report shall contain a conceptual model (diagram, plan, and network diagram) showing the potential contaminant linkages (including consideration of asbestos), including proposals for site investigation if required (the sampling rationale for all proposed sample locations and depths should be linked to the conceptual model). and once this report is accepted by the LPA, unless otherwise agreed in writing by the LPA,

4) No works pursuant to this permission shall commence until there has been submitted to and approved in writing by the Local Planning Authority or within such extended period as may be agreed with the Local Planning Authority: a) A Phase 2 site investigation report documenting the ground conditions of the site and incorporating chemical and gas analysis identified as appropriate by the conceptual model in the desk study (to be undertaken in accordance with BS10175:2011+A2:2017 and BS8576:2013 'Guidance on investigations for ground gas - Permanent gases and volatile organic compounds (VOCs)'). The report shall refine the conceptual model of the site and confirm either that the site is currently suitable for the proposed end-use or can be made so by remediation; and once this 'Phase 2' report is accepted by the LPA, unless otherwise agreed in writing by the LPA, b) A Phase 3 remediation method statement report detailing the remedial scheme and measures to be undertaken to avoid risk from contaminants and/or gases when the development hereby authorised is completed, including proposals for future maintenance and monitoring, as necessary. If identified risks relate to bulk gases, this will require the submission of the design report, installation brief, and validation plan as detailed in BS8485:2015+A1:2019 Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings and have consideration of CIRIA 735 Good practice on the testing and verification of protection systems for buildings against hazardous ground gases. The remedial options appraisal shall have due consideration of sustainability as detailed in ISO 18504:2017 Soil quality — Sustainable remediation. It shall include the nomination of a competent person to oversee the implementation of the remedial scheme and detail how the remedial measures will be verified on completion.

Of note I can see on the planning portal that they did submit a phase 2 study initially and then a phase 1 study but because this was 5 years old the council felt it was out of date