Bolsover Land Ltd Former Coalite Works – Plot 4
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Bolsover Land Ltd Former Coalite Works – Plot 4 Remediation Verification Report April 2021 35-37 High Street, Barrow-upon-Soar, Loughborough, LE12 8PY Tel: 01509 410372 Email: [email protected] G&J Geoenvironmental Consultants Ltd Learn, Aspire, Achieve, Deliver Former Coalite Works Plot 4 Verification Report Report Title Former Coalite Works – Site Address Former Coalite Works, Plot 4, Remediation Buttermilk Lane, Bolsover, Verification Report Derbyshire Author G&J Geoenvironmental Contamination / Contamination Consultants Ltd Geotechnical Work Stage Verification Report Date April 2021 Brief Description of the The entire former Coalite site is being remediated in accordance with the remediation Report Contents strategy agreed with the Local Planning Authority and the Environment Agency. This report presents the data collected to validate the remediation of Plot 4 and reviews this data to verify that this part of the site has been remediated in accordance with the agreed specification and is therefore suitable for the proposed use. i Bolsover Land Ltd Plot 4 Verification Report GJ036 April 2021 Former Coalite Works Plot 4 Verification Report Document Control Project: Former Coalite Works, Plot 4 – Remediation Verification Report Client: Bolsover Land Ltd Job Number: GJ036 File Origin: N:\Projects\GJ036 Bolsover\Validation\Report\GJ036-Plot 4-VR-V1.doc Document Checking: Prepared by: Andrew Bedford Signed: Senior Geo-environmental Consultant Checked and Chris Hepworth Signed: Issued by Managing Director Issue Date Status 1 April 2021 V1 2 3 ii Bolsover Land Ltd Plot 4 Verification Report GJ036 April 2021 Former Coalite Works Plot 4 Verification Report Contents Page Introduction ...................................................................................................................... 1 1.1 Background ........................................................................................................................ 1 1.2 Report Format .................................................................................................................... 2 1.3 Terms and Conditions .......................................................................................................... 3 Site Information ................................................................................................................ 5 2.1 Site Location ....................................................................................................................... 5 2.2 Geology, Hydrogeology and Hydrology .................................................................................. 6 2.3 Development Proposals ........................................................................................................ 7 Background to the Remedial Works .................................................................................. 8 3.1 General .............................................................................................................................. 8 3.2 Pre-Remediation Conceptual Site Model (CSM) ....................................................................... 8 3.3 Summary of Remediation Objectives ..................................................................................... 8 Summary of Remedial Measures ..................................................................................... 10 4.1 Remedial Strategy ............................................................................................................. 10 4.2 Remedial Targets .............................................................................................................. 13 4.3 Verification Sampling ......................................................................................................... 14 Remediation Works Plot 4 ............................................................................................... 16 5.1 General ............................................................................................................................ 16 5.2 Grid Square Validation ....................................................................................................... 17 5.3 Hotspot Validation ............................................................................................................. 19 5.4 Volumes Excavated ........................................................................................................... 20 5.5 Groundwater / Surface Water ............................................................................................. 21 Validation Sampling and Analysis .................................................................................... 22 6.1 General ............................................................................................................................ 22 6.2 Grid Square Validation ....................................................................................................... 22 6.3 Hotspot Validation ............................................................................................................. 23 6.4 Non-Odorous soil excavation .............................................................................................. 23 6.5 Lagoon Sediment .............................................................................................................. 24 6.6 Validation of Treated Soils .................................................................................................. 24 iii Bolsover Land Ltd Plot 4 Verification Report GJ036 April 2021 Former Coalite Works Plot 4 Verification Report 6.7 River Doe Lea ................................................................................................................... 27 6.8 Asbestos ........................................................................................................................... 29 Summary & Conclusions .................................................................................................. 30 7.1 Remediation Validation ...................................................................................................... 30 7.2 Post Remediation Conceptual Model .................................................................................... 31 7.3 Further Works ................................................................................................................... 32 APPENDIX CONTENTS Appendix A – Drawings A1 – Proposed Layout A2 – Remediation Grid A3 – Sampled Grid Squares A4 – Hotspot Validation Sample Locations Appendix B – Photographs Appendix C – Material Movement Tracker Appendix D – Records of Contaminated Water Removal Appendix E – Chemical Analysis Results E1 – Grid Square Validation E2 – Hotspot Validation E3 – Clean Source Soils E4 – Plot 4 Lagoon Sediment E5 – Treated Material E6 – River Doe Lea iv Bolsover Land Ltd Plot 4 Verification Report GJ036 April 2021 Former Coalite Works Plot 4 Verification Report Introduction 1.1 Background G&J Geoenvironmental Consultants Ltd (G&J) has been commissioned by Bolsover Land Ltd to carry out the verification of remediation works at the former Coalite Works, located off Buttermilk Lane, Bolsover, Derbyshire. It is proposed to redevelop the site for a commercial use. The entire site is located across the districts of two councils, Bolsover District Council and North East Derbyshire County Council. Plot 4 is situated within a part of the site that is within Bolsover district and this report has been prepared to fulfil Conditions 8, 10(b) and 12 (with respect to Plot 4) of Bolsover District Council consented Planning Application 18/00524/VAR, which varies conditions of the original application (14/00089/OUTEA). Conditions 8, 10(b) and 12 read: 8. Remediation of Plots 4 and 5 shall be carried out in complete accordance with the details approved under application no.s 18/00003/DISCON and 18/00186/DISCON. 10(b). Prior to the construction of any building on Plot 4 or 5; a verification report completed by a suitably qualified and independent assessor (either G&J as approved under 16/00452/DISCON or appropriate alternative assessor subsequently approved in writing by the local planning authority) providing evidence that remediation of those plots meets the site-specific remediation targets approved under application no. 16/00452/DISCON must first be submitted to and approved in writing by the Local Planning Authority. 12. Prior to any building being taken into use on either of Plots 4, 5, 6, 7 or 8, a verification report (or verification reports) completed by a suitably qualified and independent assessor (either G&J as approved under 16/00452/DISCON or appropriate alternative assessor subsequently approved in writing by the local planning authority) must first be submitted to and approved in writing by the Local Planning Authority. The submitted verification report (or verification reports) must provide evidence that remediation of the entire development site shown edged red as defined by Drawing No. 18025_SK49 meets the site- specific remediation targets approved under application no. 16/00452/DISCON to meet the requirements of this condition Ground investigations undertaken across the site have identified ground contamination that has been determined as representing potentially significant risks to human health and controlled waters. The findings of the ground investigations are detailed in the following reports; 1 Bolsover Land Ltd Plot 4 Verification Report GJ036 April 2021 Former Coalite Works Plot 4 Verification Report