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27 5.2 APPENDIX D2 Geotechnical Report

za Prepared by: Jeffares and Green (Pty) Ltd 1 st Floor, Block 5 Greenacres Office Park Second Avenue, Newton Park 6045 PO Box 27308,

28 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development ILINGE AND LESSEYTON CEMETERY DEVELOPMENT - GEOTECHNICAL INVESTIGATION FINAL REPORT SEPTEMBER 2014 Prepared for: Lukhanji Municipality Private Bag X 7111 Queenstown 5320 Tel: agaji@lukhanji.co.za Prepared by: Jeffares and Green (Pty) Ltd 1 st Floor, Block 5 Greenacres Office Park Second Avenue, Newton Park 6045 PO Box 27308, Greenacres 6057 Tel: Fax: parfittl@jgi.co.za PM/TS 3524 ILLINGE AND LESSEYTON CEMETERY DEVELOPMENT_Final September 2014

30 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page i Table of Contents 1 Introduction and Scope of Report Scope of Work Available Information Site Description General Site Description Regional Geology Site Drainage Climatic Conditions Fieldwork Results Ilinge Site Profile Summary Lesseyton Site Profile Summary Laboratory Testing Soil Testing Cemetery Site Selection Criteria Site Topography Soil Excavatibility Site Drainage Soil Permeability Positioning in Respect of Domestic Water Supplies Positioning in Respect of Drainage Features Basal Buffer Zone Grave Stability Soil Workability Cemetery Size Conclusions General Selected Bibliography Appendices Appendix A.: Figures Appendix B.: Trial Pit Profiles Appendix C.: Dynamic Cone Penetrometer Results Appendix D.: Laboratory Results PM/TS 3524 ILLINGE AND LESSEYTON CEMETERY DEVELOPMENT_Final September 2014

31 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page 2 1 Introduction and Scope of Report Jeffares & Green Pty (Ltd) were appointed by the Lukhanji Local Municipality (Lukhanji) to conduct geotechnical investigations to determine the suitability of two sites for proposed cemetery developments. The sites are located near the villages of Illinge and Lesseyton, near Queenstown. The proposed Illinge cemetery site is located west of the village on Erf No. 218 and has a footprint of m 2. The proposed Lesseyton cemetery site is located adjacent to the National Route N6 on Erf No. 100 and has a footprint of m 2. The following report presents the finding of the invasive geotechnical investigation and laboratory testing conducted in July, August and September 2014, attempts to classify the site in terms of suitability for the proposed cemetery developments. 2 Scope of Work The following work was completed during the geotechnical investigation for the proposed Ilinge and Lesseyton Cemeteries: Test Pits o o A total of ten test pits, labelled ITP1 to ITP10, were excavated to depths ranging between 1.30m and 3.50m below natural ground level, at selected locations across the Municipal site near Illinge using a TLB; A total of five test pits, labelled LTP1 to LTP5, were excavated to depths ranging between 3.00m and 3.20m below natural ground level, at selected locations across the Municipal site near Lesseyton using a TLB Laboratory Testing o Six (6No.) and three (3No.) representative, disturbed subsoil samples were retrieved from the test pits excavated across the Municipal sites at Illinge and Lesseyton, respectively, and were submitted to LABCO Material Investigations Laboratory in Port Elizabeth for the following laboratory testing and analysis: Particle Size Distribution; Atterberg Limits Determination; and Potential Expansiveness Testing. Modified AASHTO California Bearing Ratio (CBR) Ilinge Cemetery Development.docx September 2014

32 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page 3 3 Available Information The following information was used during the compilation of this report: 1: scale 3125 Geological Map Sheet for Queenstown 1: scale 3127CC Topographical Map Sheet for Queenstown; 1: scale 3126DD Geotechnical Map Sheet for Queenstown; The document entitled Geotechnical Investigation Guidelines for Cemetery Site Selection drafted by the Council for Geosciences in 2004 (Richards and Croukamp, 2004). 4 Site Description 4.1 General Site Description Illinge: The proposed Municipal Cemetery site under investigation are located within the village of Ilinge, which lies approximately 20km south-east of Queenstown City Centre. At present this site is of open fields and are surrounded by sparse semi-rural residential dwellings. Short grass and abundant ant heaps dominate the study area. The site is accessed via the Ilinge village turnoff from the National Route N6. There after site access is gained via a farm gate onto the proposed gravesite. The site is buffered by a mountain range in the north and tar road in the south. The elevation at site ranges from 1169mamsl (meters above mean sea level) to 1175mamsl (Google Imagery, 2014). Lesseyton: The proposed Municipal Cemetery site under investigation are located within the village of Lesseyton, which lies approximately 15km north-west of Queenstown City Centre. At present this site is of open fields and are surrounded by sparse semi-rural residential dwellings. Short grass, shrubs and trees dominate the study area. The site is accessed via the Lesseyton village turnoff from the National Route N6. There after site access is gained from the unsurfaced road onto the proposed gravesite. The site is buffered by a stream to the north and tar road in the south. The elevation at site ranges from 1111mamsl (meters above mean sea level) to 1113mamsl (Google Imagery, 2014) Ilinge Cemetery Development.docx September 2014

33 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page Regional Geology According to the 1: Queenstown scaled Geological Map Sheet, the site is underlain by the Burgersdorp Formation (Trb). This formation is represented by brownish, red and grey mudstone and sandstone. The Burgersdorp Formation has since be intruded numerous times by post-karoo dykes and sills (Jd). A Geological map is provided in Figure 3, Appendix A. 4.3 Site Drainage Illinge: No major surface water bodies were noted within the site boundary during the geotechnical investigation. However, a stream was identified during the investigation which lies approximately 100m east. Lesseyton: No major surface water bodies were noted within the site boundary during the geotechnical investigation. However, a perennial river was identified during the investigation which lies approximately 150m to the north. 4.4 Climatic Conditions Table 4-1 below indicates the general climatic conditions experienced within the Queenstown area. Table 4-1: Climatic Data for Queenstown Month Average Rainfall Average Maximum Average Minimum Temperature (mm) Temperature (ºC) (ºC) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Information extracted from saexplorer.co.za Annual average midday temperatures ranging from 16.8ºC to 27.6ºC have been recorded within the Queenstown area. The area experiences the coldest temperatures during July with an average night temperature of 2ºC Ilinge Cemetery Development.docx September 2014

34 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page 5 In general the Queenstown area receives approximately 399mm of rainfall per annum with the highest rainfall recorded during the summer months. On average the lowest rainfall of approximately 3mm is recorded July which are considered the dry months while the highest rainfall value of 67mm is recorded in March. 5 Fieldwork Results 5.1 Ilinge Site Profile Summary A summary of the subsoils encountered within the investigation site has been described in the table below, with the detailed field logs presented in Appendix B of this report. The approximate locations of the test pits excavated are shown in Appendix A, Figure 1. Table 5-1: Ilinge Site Condensed Log Trial Pits ITP1 Silty Sand sis Sandy silt ssi Sandy Clay scl Silty Clay sicl Depth (m) Description T sis C sis ITP2 R scl H sicl R scl ITP3 T sis R cls H sis ITP4 T sis C cls MW Mudrock ITP5 T sis R scl SW Mudrock R sis THICKNESS OF SOIL LAYERS (m) TOPSOIL T / COLLUVIUM C / HILLWASH H / RESIDUAL R Clayey Sand cls ITP6 T sis R scl R MW Mudrock ITP7 T sis R scl MW to SW Mudrock R scl ITP8 T cls HW Dolerite R cls R scl ITP9 T sis R scl CW Dolerite ITP10 T sis R cls R scl Clayey Silt clsi Gravelly Clay ROCK SW - Slightly Weathered / MW - Moderately Weathered / HW - Highly Weathered / CW - Completely Weathered Ilinge Cemetery Development.docx September 2014

35 Jeffares & Green: 03524: Ilinge and Lesseyton Cemetery Development Page Lesseyton Site Profile Summary A summary of the subsoils encountered within the investigation site has been described in the table below, with the detailed field logs presented in Appendix B of this report. The approximate locations of the test pits excavated are shown in Appendix A, Figure 2. Table 5-2: Trial Pits Lesseyton Site Condensed Log THICKNESS OF SOIL LAYERS (m) TOPSOIL T / ALLUVIAL A Silty Sand sis Clayey Sand cls Sandy silt ssi Sandy Clay scl LTP1 T sis A cls A cls LTP2 T sis A cls A sis LTP3 T ssi A cls A cls LTP4 T ssi A cls A cls LTP5 T ssi A cls A sis 6 Laboratory Testing 6.1 Soil Testing The tables below display the results of the soil testing that was conducted on six subsoil samples retrieved from the test pits excavated within the Illinge Cemetery site boundary and three subsoil samples retrieved from the Lesseyton Cemetery site boundary. The laboratory test results obtained during testing have been summarised below. A full set of results has been included in Appendix D of this report Ilinge Cemetery Development.docx September 2014