Phase 1 Report
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Geo‐Environmental Ltd pwa Consulng Geo‐Environmental Engineers Phase 1 Geo-environmental Assessment Burnley FC Training Facilities, Gawthorpe Hall, Calls Wharf Padiham, Burnley, 2 The Calls Leeds Lancashire West Yorkshire LS2 7JU T.0113 2372929 F.0113 2372701 [email protected] www.pwageo.co.uk Project No. 14111/G/01Rev2 December 2014 FS560612 Report No: 14111/G/1 Project Details: Burnley F.C., Gawthorpe Date: December 2014 Client Burnley Football Club. Turf Moor, Harry Potts Way, Burnley, Lancashire BB10 4BX Document Revision Status REVISION DATE COMMENTS Rev V1 September 2014 V1 Rev V2 December 2014 V2 (Updated red line boundary) Report No: 14111/G/1 Project Details: Burnley F.C., Gawthorpe Date: December 2014 Executive Summary Background Burnley Football Club are proposing the redevelopment of a site located in the vicinity of Padiham, on the outskirts of Burnley in Lancashire. The site currently comprises open grassland which is partly utilised as a training ground by Burnley Football Club, and was historically utilised as a sports ground. The proposed re-development involves plans to construct a number of training pitches and mini pitches, along with an indoor pitch and changing facilities housed within a steel framed unit. PWA Geo-Environmental Brief and Objective PWA Geo-Environmental were appointed by Campbell Driver Partnership on behalf of Burnley F.C. to undertake a Phase 1 geo-environmental review of the site. The overall objective of the review was to determine the presence and likely extent of any potential environmental liabilities associated with the current and past uses of the site, and to provide preliminary geotechnical recommendations. This Phase 1 report is primarily a review of existing data and preliminary environmental risk assessment, with an assessment of potential geo-environmental liabilities associated with developing the site and to support of a planning application. Site History Historic OS maps dating from 1846 to 1891 indicate that the site has historically been utilised as a sports (cricket) ground, prior to being utilised as a football training ground by Burnley Football club. No further developments were recorded in the immediate vicinity of the site. The site was historically located to the north of Gawthorpe Hall estate grounds and the River Calder. The River Calder was then diverted during the 1800’s (due to foul smell and pollution) and moved to the north of the site, adjacent to Grove Lane Plantation. The River Calder was subsequently diverted back to its original course to the south of the site in 1965, when opencast coal mining activities were undertaken to the north of Grove Lane Plantation. A number of historic coal mines and shafts (including the Bancroft and Cornfield Colliery) are recorded to the north, east and west of the site. Preliminary Risk Assessment Conclusions Existing documentary data was sourced and compiled to establish the likely ground conditions, site history and the site’s environmental sensitivity. Public domain information was obtained regarding records of regulatory intervention. Potential sources of contamination associated with the land use were identified, as well as potential environmental receptors. The site has been evaluated in the context of a ‘Public Open Space’ end-use. The preliminary risk assessment has identified potential sources of soil contamination associated with previous on-site uses and potential offsite sources. Following a review of available information pertaining to historic land use, local geology, topography etc., along with the initial site reconnaissance, the risk has been assessed as low risk. On the basis of the information reviewed it is considered that although it is unlikely that significant contaminant risks are present on-site due to historic land use on-site and/or offsite, potential contaminants may be present which would be detrimental to the site and the proposed development. It would therefore be prudent to undertake further intrusive investigations, in order to assess any potential risks and to provide geotechnical information for design purposes. A summary of this desk study review is provided in the following table*. *This brief summary should not be assumed to represent a complete account of all the potential geo-environmental issues that may exist at the site. As such it is strongly recommended that the report be read in its entirety. Report No: 14111/G/1 Project Details: Burnley F.C., Gawthorpe Date: December 2014 Subject Remarks Historically the site was located to the north of Gawthorpe Hall estate Former use grounds and was utilised as a sports (cricket) pitch. The site is currently utilised as football training ground by Burnley Football Current use Club. North – Grove Lane Plantation East – Open farm land Adjacent land uses South – River Calder and Gawthorpe Hall West – Open farm land with the hamlet of Padiham located beyond. There are three Historic Landfills and one Registered Landfill within 500m Landfill sites of the site. The closest of which relates to a landfill located at Cornfield Farm approx. 342m to the northeast of the site. On-site: Possible localised soil contamination associated with Made Ground on-site. Potential for Herbicides, or leaks/spillages of fuel, oil, lubricants associated with on-site activities (maintenance of sports Potential pitches). Ground gas from Made Ground, mine workings and natural Contamination organic soils located on-site. Sources Offsite: Ground gas migrating from nearby mine workings, coal seam or natural organic soils located offsite. Leachable contaminants migrating from adjacent farmland, or historic coal workings located to the east, north and west of the site. River Terrace deposits and/or Alluvial deposits overlying Pennine Lower Coal Measures. There is the potential for Made Ground to be present on- site associated with the preparation of sports ground/pitches, diversion and re-diversion of the River Calder, and historic coal mining activities Anticipated Ground undertaken in the vicinity of the site. Soft organic soils may be present on- Conditions site associated with historic land drainage features, pond area, and adjacent River Calder. Depth to Bedrock on-site not proven but local historic borehole records indicate depth to bedrock to be around ~11m – 12m BGL. The site is located in an area associated with historic coal mining operations. A Coal Authority Mining Report was commissioned and states that the site is within the likely zone of physical influence on the surface Mining from past underground workings in two seams of coal at 50m to 170m depth, which were last worked in 1940. The Report also states that the site is in an area for which a license to remove coal using underground methods is currently awaiting determination by the Coal Authority. The ground gas generation potential is generally assessed as being low to moderate risk from ground gas generated from potential Made Ground or organic rich soils associated with the adjoining water course, and/or coal Ground Gas seams/former mine workings in the local vicinity. It is considered that ground gas monitoring is required for this development. It is anticipated that concentrations are unlikely to exceed *This brief summary should not be assumed to represent a complete account of all the potential geo-environmental issues that may exist at the site. As such it is strongly recommended that the report be read in its entirety. Report No: 14111/G/1 Project Details: Burnley F.C., Gawthorpe Date: December 2014 CIRIA C665 (Ref. 4) Characteristic Situation 2, with basic protection measures likely to be sufficient to protect against the worst case scenario. The BRE 211 Radon Guidance report indicates that the site is located in an area where less than 1% of homes are above the action level. The corresponding BRE guidance document indicates that no radon measures Radon are required for developments undertaken in this area. It should be noted that the requirement for Radon Protection measures will need to be confirmed with local Building Control. Part of the site is located in a Flood Zone 2 and Flood Zone 3, and may be Flooding at risk from flooding. Specialist flood risk advice should be sought with regards to drainage and flooding. On the basis of the information reviewed and observations made during the site walkover it is considered that the site presents a low risk with regards contamination (and a low to moderate risk associated with ground Environmental gas), however further intrusive site investigation is considered prudent to Liability confirm the findings of the preliminary investigation regarding the potential for contamination and to provide geotechnical information for design purposes. *This brief summary should not be assumed to represent a complete account of all the potential geo-environmental issues that may exist at the site. As such it is strongly recommended that the report be read in its entirety. Report No: 14111/G/1 Project Details: Burnley F.C., Gawthorpe Date: December 2014 Table of Contents 1. INTRODUCTION 1 1.1 Phase 1 Methodology ............................................................................................................... 2 2. SITE PROFILE 3 2.1 Site Location .............................................................................................................................. 3 2.2 Site Reconnaissance .................................................................................................................. 3 2.3 Site Regulatory and Environmental