Site Investigation Report Site: Hadlow Down Sports Field, School Lane, Hadlow Down, TN22 4JD Client: Hadlow Down Community Centre Report Date: 15 July 2013 Project Reference: J11197 SUMMARY The site, which extends to about 1.5 ha, comprises an open area of grass containing play equipment, a cricket pitch, a cricket pavilion, and playing field. The site currently has poor drainage which is affecting its use. It is proposed to install a drainage system, as well as eventually constructing a new village centre. Geological records indicate the site to be underlain by the Wadhurst Clay in the north, and the Tunbridge Wells Sands to the south. A single phase of intrusive investigation was carried out. The soils encountered comprised a thin covering of clay topsoil overlying stiff weathered clays to about 1.5 m, and then with stiff to very stiff clays overlying weak to moderately strong sandstones. A safe bearing capacity of about 125 kN/m 2 at 1.8 m is recommended. No groundwater was encountered during this investigation. Contamination issues are not considered in this report. The site investigation was conducted and this report has been prepared for the sole internal use and reliance of Hadlow Down Community Centre and their appointed Engineers. This report shall not be relied upon or transferred to any other parties without the express written authorization of Southern Testing Laboratories Limited. If an unauthorised third party comes into possession of this report they rely on it at their peril and the authors owe them no duty of care and skill. The findings and opinions conveyed via this Site Investigation Report are based on information obtained from a variety of sources as detailed within this report, and which Southern Testing Laboratories Ltd believes are reliable. Nevertheless, Southern Testing Laboratories Ltd cannot and does not guarantee the authenticity or reliability of the information it has obtained from others. Morris Stevenson MICE Tom Lees MSc FGS (Countersigned) (Signed) For and on behalf of Southern Testing Laboratories Limited STL: J11197 15 July 2013 TABLE OF CONTENTS AAA INTRODUCTIONINTRODUCTION................................................................................................................................................................................................................... ................................................................................................ ................................................................................................ .................................................................................. ...............1111 1 AUTHORITY ........................................................................................................................................ 1 2 LOCATION .......................................................................................................................................... 1 3 PROPOSED CONSTRUCTION .............................................................................................................. 1 4 OBJECT .............................................................................................................................................. 1 5 SCOPE ................................................................................................................................................ 1 BBB WALKOVER SURVEY & PRPRELIMINARYELIMINARY INFORMATIOINFORMATIONNNN ................................................................................................................................................................................... .............................................................................. ...2222 6 GEOLOGY ........................................................................................................................................... 2 7 RADON RISK ..................................................................................................................................... 3 8 WALKOVER SURVEY .......................................................................................................................... 3 CCC SITE INVESTIGATION ................................................................................................................................................................................... ................................................................................................ ................................................................................................ ......................................................4........ 444 9 METHOD ............................................................................................................................................ 4 10 WEATHER CONDITIONS .................................................................................................................... 4 11 SOILS AS FOUND ............................................................................................................................... 4 12 GROUNDWATER STRIKES .................................................................................................................. 4 DDD FIELD TESTING AND SASAMPLINGMPLING ................................................................................................................................................................................... ................................................................................................ ..................................................................................... ........................5555 EEE GEOTECHNICAL LABORATLABORATORYORY TESTS ................................................................................................................................................................................... ................................................................................................ ............................................................5........... 555 FFF DISCUSSION OF GEOTECGEOTECHNICALHNICAL TEST RESULTS AND RECOMMENDATIONS .....................................................................................................................................5...... 555 13 SOIL CLASSIFICATION AND PROPERTIES ........................................................................................... 5 14 SWELLING AND SHRINKAGE ............................................................................................................. 5 15 LATERAL PRESSURES & HEAVE ........................................................................................................ 8 16 GROUNDWATER LEVELS .................................................................................................................... 8 17 SOAKAWAYS ..................................................................................................................................... 8 18 SULPHATES AND ACIDITY .................................................................................................................. 8 19 BEARING CAPACITY .......................................................................................................................... 8 20 EXCAVATIONS AND TRENCHING ....................................................................................................... 8 21 SLOPE STABILITY ............................................................................................................................... 8 APPENDIX A Site Plans and Exploratory Hole Logs APPENDIX B Field Sampling and in-situ Test Methods & Results APPENDIX C Geotechnical Laboratory Test Methods & Results AAA INTRODUCTION 111 Authority Our authority for carrying out this work is contained in a Project Order form from Hadlow Down Community Centre, received on the 8 th May 2013. 222 Location The site is located 0.4 km north of St Mark’s Church in Hadlow Down, 7 km south of Crowborough. The approximate National Grid Reference of the site is TQ 527 246. 333 Proposed Construction It is proposed to install a drainage system into the upper area of the playing field, as well as construct a new village centre. Ground loadings for the new building have not been given. 444 Object This is a geotechnical investigation. The object of the investigation was to assess foundation bearing conditions and other soil parameters relevant to the proposed development, and to assess the potential options for soakage within the playing field. 555 Scope This report presents our exploratory hole logs and test results and our interpretation of these data. As with any site there may be differences in soil conditions between exploratory hole positions. This report is not an engineering design and the figures and calculations contained in the report should be used by the Engineer, taking note that variations will apply, according to variations in design loading, in techniques used, and in site conditions. Our figures therefore should not supersede the Engineer's design. Contamination issues are not considered in this report. The findings and opinions conveyed via this Site Investigation Report are based on information obtained from a variety of sources as detailed within this report, and which Southern Testing Laboratories Limited believes are reliable. Nevertheless, Southern Testing Laboratories Limited cannot and does not guarantee the authenticity or reliability of the information it has obtained from others. The site investigation was conducted and this report has been prepared for