Ellison Fold Way Phase 1 Detailed Desk Study
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Imperial West Imperial Ellison Fold Way Phase 1 Detailed Desk Study Envirotec Ref: ESS/EFW/P1DS Revision: - Issue Date: 08 May 2019 Client Name: Blackburn with Darwen Council Sophos International Client Address: One Cathedral Square, Blackburn, BB1 1EP Site Address: Ellison Fold Way, Darwen Envirotec Site Service Ltd c/o Lonza Wheldon Road Castleford WF10 2JT 01977 513050 ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study Client: Blackburn with Darwen Council Project: Ellison Fold Way Report Type: Phase 1 Detailed Desk Study Report Reference: ESS/EFW/P1DS Revision: - Report Status: Issue 01 Date: 08 May 2019 Report Author Signature Date Dan Mason Technical Director 08/05/19 Checking and Signature Date Authorisation Martin Greenwood Director 08/05/19 For and on behalf of Envirotec Site Service Ltd Rev - | Copyright © 2019 Envirotec Site Service Ltd Page i ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study Table of Contents 1.0 Introduction .............................................................................................................................................. 1 1.1 Project Background .......................................................................................................................... 1 1.2 Scope of Works ................................................................................................................................ 1 2.0 Phase 1 – Detailed Desk Study ............................................................................................................... 2 2.1 Site Description................................................................................................................................. 2 2.2 Surrounding Land-Use ..................................................................................................................... 2 2.3 Site History ....................................................................................................................................... 2 2.4 Geology ............................................................................................................................................ 4 2.5 Coal Mining, Mineral Extraction and Subsidence ............................................................................. 5 2.6 Hydrogeology & Hydrology ............................................................................................................... 6 2.7 Potential Flood Risks ........................................................................................................................ 6 2.8 Landfill and Waste Management Activity ......................................................................................... 6 2.9 Environmental Permits, Incidents and Registers .............................................................................. 7 2.10 Industrial Land Use Information ........................................................................................................ 7 2.11 Ecology ............................................................................................................................................. 8 2.12 Preliminary Unexploded Ordnance Risk Assessment ...................................................................... 8 2.13 Existing Reports................................................................................................................................ 8 2.14 Conceptual Model ............................................................................................................................. 9 2.14.1 Potential Sources.............................................................................................................................. 9 2.14.2 Potential Pathways ......................................................................................................................... 10 2.14.3 Potential Receptors ........................................................................................................................ 11 2.15 Conceptual Model – Qualitative Risk Assessment ......................................................................... 12 2.16 Recommendations .......................................................................................................................... 19 Rev - | Copyright © 2019 Envirotec Site Service Ltd Page ii ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study Appendices Appendix A1 – Site Location Appendix A2 – Conceptual Site Model Appendix B – Walkover Photographic Record Appendix C – Envirocheck Report Appendix D – Coal Authority Report Appendix E – Qualitative Risk Assessment Rationale Rev - | Copyright © 2019 Envirotec Site Service Ltd Page iii ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study 1.0 Introduction 1.1 Project Background In April 2019 Envirotec Site Service Ltd (ESS) were instructed by Blackburn with Darwen Council to undertake a Phase 1 Detailed Geo-Environmental Desk Study on their site referred to as Ellison Fold Way located off Marsh House Lane, Darwen. The site is centred on national grid reference 370250 422310 with an area of 3.05Ha. A location plan can be found in Appendix A1. The site is split into three areas: Marsh House A and Marsh House B which are in BwDC ownership and Land North of Lisbon Drive (Lison Drive Area) which is in private ownership. It is understood that the proposed development includes construction of low rise residential properties on all three areas. 1.2 Scope of Works The desk top study is to be undertaken, principally, to provide an overview of the geo-environmental setting of the site of interest with a brief assessment of any risks that could be presented to site users and the wider environment. Additionally the desk top study should provide information that could be used to ascertain the extent of any in- situ geo-environmental investigation required to confirm the site conceptual model developed in the desk top study. The desk top study provides an initial view in respect of the status of the site with regard to: • The potential impact on the site of interest from surrounding land uses and other environmental • factors. • Potential contamination of the site strata by historical and or current use. • The potential impact on the wider environment by historical and or current use of the site of interest. • Potential problems associated with geological features such as faulting, mineral extraction, mining • and land instability. • The location of apparent sub-surface structures that may affect the proposed redevelopment. • The location of above-surface features that may affect the proposed redevelopment. This report will make reference to the three separate site areas where necessary. Rev - | Copyright © 2019 Envirotec Site Service Ltd Page 1 ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study 2.0 Phase 1 – Detailed Desk Study In accordance with the scope identified in Section 1.2, this desk top study has been undertaken using the following data sources and involves no intrusive investigations or testing. • Envirocheck Report. • British Geological Society 1:50,000 map. • British Geological Society website. • Environment Agency website. • Coal Authority Website • Coal Authority Report • Radon Atlas for England and Wales. • UK Radon interactive mapping website. 2.1 Site Description All three site areas are currently occupied by undeveloped grassland. Ellison Fold Way has just been completed and passes between Marsh House A and Marsh House B. A site walkover revealed no visual evidence of contamination or significant fly-tipping. A site walkover was undertaken on 15 April 2019 and the photographic record is presented in Appendix B. 2.2 Surrounding Land-Use Surrounding land is generally occupied by residential properties Marsh House A is surrounded by relatively low density residential properties. Marsh House B has undeveloped grassland to the north (Lisbon Drive Site) and the west (Marsh House A). Low density residential is located to the east and south. Lisbon Drive area has undeveloped grassland / farmland to the north and east with low density residential to the south and west. 2.3 Site History The following summary of the site’s history is based on a review of historical 1:10000, 1:10560, 1:2500 and 1:1250 scale Ordnance Survey maps as presented within the Envirocheck Report (presented in Appendix C). Rev - | Copyright © 2019 Envirotec Site Service Ltd Page 2 ESS/EFW/P1DS Ellison Fold Way Phase 1 Detailed Desk Study Summary of the Historical Development of the Sites. Map Dates Description Comments c1890 to All three areas are unoccupied and used for grazing Unoccupied Present Day farmland. Summary of the Historical Development of the Surrounding Area. Map Dates Description Comments c1849 Agriculture All three areas are surrounded by farmland with a number of derelict coal pits located to the north and east of the Lisbon Drive area and south and west of the Marsh House areas. A few residential properties are located adjacent to the Lisbon Drive area’s northern boundary. The Ellison Fold Colliery is located around 300m north west of the site. c1900 Expansion The town of Darwen to the west has undergone significant expansion. Residential properties are now apparent against Marsh House A’s western boundary. Much of the coal mining is thought to have ceased now. Marsh House Mill and associated reservoirs are located to the southern side of Marsh House Lane. Some excavations (possible clay pits) are located to the immediate north and east of the Lisbon Drive area. c1950’s