A50 Growth Corridor Scheme Phase I Geo- environmental and Geotechnical Assessment Final 47069770 May 2014 Prepared for: Staffordshire County Council UNITED KINGDOM & IRELAND A50 Growth Corridor – Staffordshire County Council Rev Date Details Prepared by Checked by Approved by Victor Ojambati David Evans David Cragg 1 May 2014 For Client Comment Graduate Geo- Principal Geo- environmental environmental Technical Director Engineer Scientist Victor Ojambati David Evans David Cragg 2 May 2014 Final Graduate Geo- Principal Geo- environmental environmental Technical Director Engineer Scientist This document has been prepared in accordance with the scope of URS Infrastructure & Environment UK Limited’s appointment with its client and is subject to the terms of that appointment. It is addressed to and for the sole and confidential use and reliance of URS Infrastructure & Environment UK Limited’s client. URS Infrastructure & Environment UK Limited accepts no liability for any use of this document other than by its client and only for the purposes for which it was prepared and provided. No person other than the client may copy (in whole or in part) use or rely on the contents of this document, without the prior written permission of the Company Secretary of URS Infrastructure & Environment UK Limited. Any advice, opinions, or recommendations within this document should be read and relied upon only in the context of the document as a whole. The contents of this document do not provide legal or tax advice or opinion. © URS Infrastructure & Environment UK Limited 2014 URS Infrastructure & Environment UK Limited Royal Court Basil Close Chesterfield Derbyshire S41 7SL Telephone: +44(0)1246 209 221 Fax: +44(0)1246 209 229 PHASE 1 GEO-ENVIRONMENTAL & GEOTECHNICAL ASSESSMENT REPORT May, 2014 i A50 Growth Corridor – Staffordshire County Council TABLE OF CONTENTS 1. INTRODUCTION ................................................................ 1 1.1 Purpose of Report .............................................................. 1 1.2 Proposed Development ...................................................... 1 1.3 Information Sources ........................................................... 1 2. ENVIRONMENTAL SETTING ............................................ 3 2.1 Location .............................................................................. 3 2.2 Hydrology ........................................................................... 3 2.3 Geology .............................................................................. 3 2.3.1 Made Ground ..................................................................... 3 2.3.2 Superficial Deposits............................................................ 3 2.3.3 Solid Geology ..................................................................... 4 2.3.4 Geological Faults ................................................................ 4 2.3.5 Potential for Natural Ground Hazards ................................ 4 2.4 Soils .................................................................................... 4 2.5 Mining ................................................................................. 5 2.6 Hydrogeology ..................................................................... 5 3. SUMMARY OF ENVIRONMENTAL INFORMATION ........ 7 4. REVIEW OF HISTORICAL DATA REPORT .................... 11 5. CONCEPTUAL SITE MODEL .......................................... 13 6. ENVIRONMENTAL RISK ASSESSMENT ....................... 16 6.1 General ............................................................................. 16 6.2 Risk Assessment Principles ............................................. 16 6.3 Evaluation of Risk ............................................................. 17 6.3.1 General Risk Assessment ................................................ 17 6.4 Evaluation of Risks to Future Site Users.......................... 18 6.5 Evaluation of Risks to Controlled Waters ......................... 19 6.6 Evaluation of Risks to Development Infrastructure .......... 19 6.7 Evaluation of Risks to Construction Workers ................... 19 6.8 Evaluation of Risks to Off Site Receptors ........................ 19 6.9 Evaluation of Risks to On site Flora and Fauna ............... 20 7. PRELIMINARY GEOTECHNICAL APPRAISAL .............. 21 8. CONCLUSIONS & RECOMMENDATIONS ..................... 23 9. REFERENCES ................................................................. 24 TH APPENDIX A ENVIROCHECK REPORT (55377518_1_1 13 APRIL 2014) FIGURES DRAWING 47069770/DS/01 SITE LOCATION PLAN DRAWING CDX8690/P/02 SCHEME EXTENTS PHASE 1 GEO-ENVIRONMENTAL & GEOTECHNICAL ASSESSMENT REPORT May, 2014 i A50 Growth Corridor – Staffordshire County Council TABLE OF TABLES TABLE 1 POTENTIAL GROUND STABILITY HAZARDS .................... 4 TABLE 2 BGS RECORDED MINERAL SITES .................................... 5 TABLE 3 ABSTRACTION LICENSES .................................................. 7 TABLE 4 DISCHARGE CONSENTS .................................................... 7 TABLE 5 POLLUTION INCIDENTS TO CONTROLLED WATERS ..... 8 TABLE 6 REVIEW OF HISTORICAL DATA REPORT....................... 11 TABLE 7 DESCRIPTION OF POTENTIAL SOURCES...................... 14 TABLE 8 DESCRIPTION OF POTENTIAL RECEPTORS ................. 14 TABLE 9 DESCRIPTION OF POTENTIAL PATHWAYS ................... 15 TABLE 10 POTENTIAL POLLUTANT LINKAGES ............................. 15 TABLE 11 SEVERITY OF RISK ......................................................... 16 TABLE 12 PROBABILITY OF RISK OCCURRING ............................ 17 TABLE 13 COMPARISON OF SEVERITY AND PROBABILITY ....... 17 TABLE 14 RISK EVALUATION OF POTENTIAL POLLUTANT LINKAGES ......................................................................................... 18 PHASE 1 GEO-ENVIRONMENTAL & GEOTECHNICAL ASSESSMENT REPORT May, 2014 ii A50 Growth Corridor – Staffordshire County Council 1.1 Purpose of Report URS was commissioned by Staffordshire County Council to undertake a Phase 1 Geo- environmental & Geotechnical Assessment for the proposed A50 Growth Corridor ‘Project A’ near Uttoxeter, Staffordshire. The location of the site is presented in Drawing 47069770/DS/01. The extent of the proposed scheme is presented in Drawing CDX8690/P/14. This Phase 1 Assessment report aims to identify potential contamination issues from current and historic land use, which may be related to on and off-site sources. This report will also provide a preliminary assessment of the geotechnical factors which have the potential to affect a future development scheme. In addition and where it is required, further details of any necessary ground investigation and associated monitoring will be provided. The report is to be used as the baseline to support the Land Quality, Geology and Soil Contamination chapter of the Environmental Statement. This Phase 1 Geo-environmental & Geotechnical assessment will review the existing information. This assessment encompasses the following: Geological conditions; Hydrology and hydrogeology; Contaminated land; Environmental risk assessment; Geotechnical assessment; and, Outline Ground Investigation Proposals. 1.2 Proposed Development The A50 Growth Corridor is located to the north of the Staffordshire town of Uttoxeter, in the administrative area of East Staffordshire Borough Council. Staffordshire County Council is leading the A50 Growth Corridor improvement works, which involves upgrade of the A50 between Blythe Bridge (Tean Roundabout) and the Doveridge Bypass. This will include the closure of the current A50-A522 slip roads and the construction of a completely new junction to the west of Uttoxeter. This new junction, which consists of entry and exit slip roads will provide access to the proposed housing and business park to the south of the A50, and the existing JCB factories to the north of the A50. 1.3 Information Sources BGS Solid and Drift for Burton Upon Trent (Sheet 140) 1:50,000; BGS map (SK03SE) 1:10,560; BGS Open Geoscience, 2014 (http://www.bgs.ac.uk/opengeoscience); Envirocheck Report, Landmark Group, 16th April 2014, Order No. 55377518_1_1 (Appendix A); Environment Agency Website (http://maps.environment-agency.gov.uk/); DEFRA website ‘MAGIC’ (http://magic.defra.gov.uk/); PHASE 1 GEO-ENVIRONMENTAL & GEOTECHNICAL ASSESSMENT May, 2014 1 A50 Growth Corridor – Staffordshire County Council National Soils Resource Institute, (2014) Soil Site Report. Full Soil Report No 553775182 (NGR Sk0734134862) PHASE 1 GEO-ENVIRONMENTAL & GEOTECHNICAL ASSESSMENT May, 2014 2 A50 Growth Corridor – Staffordshire County Council 2.1 Location The site is located to the north of the town of Uttoxeter in Staffordshire. The site is centred on national grid co-ordinates SK 407220, 334610 and is shown on Figure 1. The scheme extent plan is shown on Figure 2. The section of road and junction improvement covers approximately 1.5km west to east. The site is approximately 85m to 90m above ordnance datum (aOD) based on spot heights noted on a recent Ordnance Survey map (1:25,000 scale). A JCB products distribution centre is located to the northwest of the site. There are agricultural properties, including the ‘Anfield House’ and Park’s Farms, in the vicinity of the site. Residential properties are present to the south of the road. A restaurant is present to the west of the point where the A522 crosses the A50. A farm is present to the south of the road at the eastern end of the proposed scheme 2.2 Hydrology The key hydrological feature in the vicinity