Project No: 2014-251, December 2014 G C CROZIER - Geotechnical Consultants Engineering Geologists & Geotechnical Engineers Crozier Geotechnical Consultants ABN: 96 113 453 624 Unit 12/ 42-46 Wattle Road Phone: (02) 9939 1882 Brookvale NSW 2100 Fax : (02) 9939 1883 Crozier Geotechnical Consultants is a division of PJC Geo-Engineering Pty Ltd Date: 2 nd December 2014 No. Pages: 1 of 4 Project No.: 2014-251 GEOTECHNICAL REPORT FOR PROPOSED SWIMMING POOL AND ALTERATIONS 2 FREEMAN PLACE, CONCORD. 1. INTRODUCTION: This report details the results of a geotechnical investigation into acid sulfate soils carried out for proposed alterations and additions at 2 Freeman Place, Concord, NSW. The investigation was undertaken by Crozier Geotechnical at the request of the client Mr Roy Hraiki. For the purpose of this report the front boundary, adjacent to Freeman Place is considered the northern boundary. The site is situated on the high, southern side of the Freeman Place cul-de-sac within gently sloping topography. The site contains a relatively new two storey rendered house on the centre of the block with lawns, gardens and paved area surrounds. It is understood that a new in-ground swimming pool is proposed along the eastern side of the existing house. The pool will require an excavation of up to 1.5m depth below existing ground surface levels. Minor landscaping alterations are also proposed. The site is located within the precinct of the City of Canada Bay Council. A review of the Councils LEP 2013, identified that the site is located within land classified as Class 5 (Sheet ASS 004) and is within approximately 20m of land classified as Class 2 Acid Sulfate Soils. For Class 5 land the LEP 2013 states that all developments must be assessed where - Works within 500 metres of adjacent Class 1, 2, 3 or 4 land that is below 5 metres Australian Height Datum by which the water table is likely to be lowered below 1 metre Australian Height Datum on adjacent Class 1, 2, 3 or 4 land. Due to the proposed excavation an investigation into site conditions was required. The geotechnical investigation comprised: • A detailed geotechnical inspection of the site and adjacent land by a Geotechnical Engineer including a photographic record of site conditions. • Drilling of a hand auger borehole to investigate subsurface geology. Dynamic Penetrometer testing was also undertaken adjacent to the hand auger location. • Soil samples were collected from the borehole for assessment of acid sulfate attributes whilst the borehole was inspected for the presence of a water table.
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Project No: 2014-251, December 2014
G C CROZIER - Geotechnical Consultants Engineering Geologists & Geotechnical Engineers