Jeffares & Green (Pty) Ltd ESKOM - zitholele - EIA for Solar Park...Proposed New Solar Park Substation near Upington in the Northern Cape”. The Task Order was received from Eskom

Jeffares & Green (Pty) Ltd ESKOM

W:\Earth Sciences\3167 - Eskom Substations Geotech (CC)\04 Documents and Reports\J&G Reports

October 2012

PROPOSED NEW SOLAR PARK SUBSTATION NEAR UPINGTON:

PRELIMINARY GEOTECHNICAL INVESTIGATION FOR EVALUATION OF

THREE SITES

FACTUAL GEOTECHNICAL REPORT

CONTENTS

1. INTRODUCTION ....................................................................................................... 1

2. APPOINTMENT ......................................................................................................... 1

2.1. Information Available .......................................................................................... 1

3. SITE DESCRIPTION ................................................................................................. 1

3.1. Topography and Drainage .................................................................................. 3

3.2. Vegetation, Landuse and Existing Infrastructure ............................................. 3

3.3. Access ................................................................................................................. 3

4. GEOLOGY ................................................................................................................ 3

5. CLIMATE ................................................................................................................... 5

6. FIELDWORK ............................................................................................................. 5

6.1. Trial Pits ............................................................................................................... 6

7. GENERAL ASSESSMENT OF THE GEOTECHNICAL CONDITIONS ..................... 6

7.1. Ground Conditions.............................................................................................. 6

7.1.1. Aeolian Sands ................................................................................................. 6

7.1.2. Transported or Residual / Reworked Gravel ................................................. 7

7.1.3. Pedogenic Calcrete ........................................................................................ 7

7.1.4. Weathered Granitoid Rock ............................................................................. 7

7.2. Groundwater ........................................................................................................ 8

8. COMPARATIVE ASSESSMENT OF THE SITES ...................................................... 8

9. CONCLUSIONS ...................................................................................................... 12

10. REFERENCES ........................................................................................................ 12

APPENDIX A: GEOTECHNICAL INVESTIGATION LAYOUT PLANS

APPENDIX B: TRIAL PIT LOGS

APPENDIX C: PHOTOGRAPHS


3167/1 October 2012 Eskom Solar Park Substations - Upington Factual Geotechnical Report 1

PROPOSED NEW SOLAR PARK SUBSTATION NEAR UPINGTON:

PRELIMINARY GEOTECHNICAL

INVESTIGATION FOR EVALUATION OF THREE SITES

FACTUAL GEOTECHNICAL REPORT

1. INTRODUCTION This factual report presents the results of the geotechnical field investigations undertaken for the proposed construction of a substation near Upington in the Northern Cape. Three potential sites are being investigated to provide a comparative assessment of the geotechnical conditions in order to aid in the selection of a single preferred site. The three sites were identified by Eskom based on desktop studies. The sites are located on the farm Olyvenhouts Drift and are referred to as:

• Site 1 (18 km east of Upington)

• Site 5 (11 km south east of Upington)

• Site 6 (14 km south east of Upington) The locations of the sites are indicated in Figures 1a to 1c, overleaf. The field investigations were carried out from the 16th to the 22nd of October 2012 and entailed the following:

• The excavation 60 trial pits (20 trial pits at each site)

• Recovery of selected disturbed samples for laboratory testing This report has being prepared prior to the results of laboratory testing being available. The interpretation of the subsurface conditions at the substation sites is based on the ground conditions observed in widely spaced trial pits and is intended to provide information for initial planning purposes only. Further investigations will be required for detailed design purposes. 2. APPOINTMENT The investigation requirements were provided by Eskom in the document titled “Specification and Scope for a Preliminary Geotechnical Investigation for Evaluation of Three Sites: Proposed New Solar Park Substation near Upington in the Northern Cape”. The Task Order was received from Eskom on the 11th of October 2012, order number 4501452489.

2.1. Information Available

Preliminary layout plans for each substation site, including the location of each trial pit, were provided by Eskom. Longitudinal sections through the cut-to-fill platforms were also provided.

3. SITE DESCRIPTION The proposed sites are located east to south east of Upington in the Northern Cape Province. The sites may be accessed via a gravel district road (D3276) off the N14 national road. Access to the sites off D3276 is via sand tracks and through the veld.



Figure 1a: Locality Plan – Large Scale

Figure 1b: Locality Plan – Medium Scale



Figure 1c: Locality Plan – Small Scale

3.1. Topography and Drainage

Topography of the general area is gently undulating. There are no significant drainage features on or near the sites.

3.2. Vegetation, Landuse and Existing Infrastructure

The climate at Upington is arid and the natural vegetation of the area is classified as Kalahari Karroid Schrubland or Gordonia Duneveld. The vegetation consists of sparse grassland with scattered small bushes. The land at all three sites is used for extensive grazing. There is no infrastructure on the sites themselves.

3.3. Access

As mentioned in Section 1, access to the sites may be obtained via farm tracks off the gravel district road (D3276). Vehicle access to Sites 5 and 6 is via farm tracks which pass near the site boundaries. Site 1 is located approximately 800 m from the nearest track. Vehicle access within the sites is possible for 4x4 vehicles through the open veld.

4. GEOLOGY The geology of the area is illustrated in the extract of the 1:250 000 scale Geological Map 2820 Upington published by the Council for Geoscience (1990 edition), included as Figure 2. The geology consists of soils and pedogenic materials underlain by igneous granitoid rocks. According to above mentioned geological map, the sites are underlain by the following:

D3276



Gordonia Formation (Qg) of the Kalahari Group The Kalahari Group consists of an extensive body of terrestrial sediments of Cenozoic age. The Gordonia Formation consists of red aeolian sands that cover most of the underlying Kalahari Group sediments. The sands consist of rounded quarts grains coloured by a thin coating of haematite. The deposits are informally known as Kalahari sands (Johnson, et. al. 2006). Mokalanen Formation (T) of the Kalahari Group The calcretes indicated on the geological map belong to the Mokalanen Formation. This formation consists of sandy limestone and an overlying conglomerate with a calcareous matrix (Johnson, et. al. 2006). The calcretes encountered on site may either belong to the Mokalanen Formation or, more commonly, are expected to be younger pedogenic deposits. Louisvale Granite (Ml) of the Keimoes Suite The geological map 2820 Upington indicates that the bedrock geology beneath the Kalahari Group sediments comprises a stratigraphic unit of the Keimoes Suite known as the Louisvale Granite, which is described as “light grey, moderately to well foliated granite”. The name Louisvale Granite has been dropped from the latest stratigraphy (Johnson, et. al. 2006). The Keimoes Suite forms part of the intrusive phase of the Namaqua-Natal province. The rocks are granitoid in composition and the suite consists of a number of plutonic bodies ranging in composition from granodiorite to alkali granite. Common rock types are biotite-rich granites that are equigranular and weakly to moderately foliated. It is noted that the suite will likely be subdivided once further research is carried out and the rocks are reliably dated (Johnson, et. al. 2006).



Figure 2: Geological Map

Stratigraphy Lithology

Qg Gordonia Formation, Kalahari Group Red aeolian sands

Ml “Louisvale Granite” (Keimoes Suite

Namaqua-Natal Province)

Light grey, moderately to well foliated

granite

5. CLIMATE The climatic regime plays a fundamental role in the development of a soil profile and the weathering of rock. Weinert (1964) demonstrated that chemical decomposition is the predominant mode of rock weathering in areas where his climatic “N-value” is less than 5. In areas where the climatic N-value is between 5 and 10, disintegration is the predominant form of weathering, although some chemical decomposition of the primary rock minerals still takes place. Where the climatic N-value is greater than 10, secondary minerals do not develop to an appreciable extent and all weathering takes place by mechanical disintegration of the rock. Weinert’s climatic N-value for the Upington area is approximately 35. This implies that the climate is arid and that the development of secondary minerals is not expected. 6. FIELDWORK The fieldwork was undertaken between the 16th to the 22nd of October 2012.

Extracted from 1:250 000 scale Geological Map 2820 Upington. Council for Geoscience

Pt

Site 1

Site 5

Site 6



6.1. Trial Pits

Twenty trial pits were excavated at each site (60 trial pits in total) using a JCB Tractor-Loader-Backhoe (TLB) fitted with a 300 mm wide bucket (“narrow bucket”). The use of a narrow bucket is considered to provide a penetration advantage over the typical 700 mm diameter bucket in hard ground conditions. However, a 700 mm wide bucket was used to excavate trial pits TP3 to TP6 at Site 6 when the 300 mm bucket sheared and was being repaired. The trial pits were typically excavated to the refusal depth of the TLB, although some were terminated at shallower depth in the fill sections of the platform once suitable founding material had been reached. It must be noted that very slow excavation rates were achieved within the hardpan calcrete and weathered rock. Although the TLB was able to penetrate this material, the inference that the material is classified as soft excavation (or even intermediate excavation in certain cases) may not hold true. The depth of the trial pits ranged from 0.30 to 2.20 m with an average depth of approximately 1.1 m. The trial pits were profiled immediately after excavation by our Engineering Geologist and photographed. The locations of the trial pits are indicated in the Geotechnical Investigation Layout plans provided in Appendix A and the trial pit profiles and photographs of typical soil profiles are contained in Appendix B and C, respectively.

7. GENERAL ASSESSMENT OF THE GEOTECHNICAL CONDITIONS In general terms, a broadly similar soil profile was encountered at all three sites. However the thickness of the soil horizons differed among the sites. The typical material types encountered in the trial pits are described below.

7.1. Ground Conditions

The generalised soil profile consists of aeolian sands underlain by calcrete (in various forms) underlain in turn by weathered or hard granitic rock. Transported or residual gravel layers occur sporadically within the soil profile. The trial pit logs are contained in Appendix A.

7.1.1. Aeolian Sands

Aeolian sands, generally described as loose to very loose, gritty, silty sand, were encountered in the vast majority of trial pits from surface to typical depths of between 0.30 to 0.80 m (up to a maximum depth of 1.30 m). The thickness of the soil often varied with topography, with thicker soils being encountered in the lower-lying areas. Aeolian sands of the Kalahari Group are known to have a potentially collapsible grain structure. Many of the soils were described as having a weakly developed open-voided (pinhole) structure, although this was not observed at all test positions. An open-voided soil structure is characteristic of a potentially collapsible soil. Due to the presence of undulating hardpan calcrete and calcrete boulders within soil profile, the thickness of the aeolian sands was found to be variable within the individual test pits at numerous test positions. This phenomenon is discussed further in Section 7.1.3. Sidewall collapse within the aeolian sands was observed at numerous test positions.



7.1.2. Transported or Residual / Reworked Gravel

Gravelly soils interpreted to be of either transported or residual origin were commonly observed in the trial pits. A horizon of gravelly soil consisting of loose to medium dense, fine to medium sized gravel in a silty sand matrix was observed in a large proportion of the test pits. The horizon was relatively thin, variable, discontinuous and occurred at the contact between the aeolian sand and the underlying calcrete or weathered rock. The gravel was of variable origin, but typically consisted of vein quartz, calcrete and fragments of weathered bedrock. Gravelly soil interpreted to be re-worked residual granitic soil was encountered in a large proportion of the trial pits. The material was typically described as fine (quartz) gravel in a silty sand matrix and varied in consistency from loose to dense. The re-worked residual soil was often encountered between or underlying hardpan calcrete.

7.1.3. Pedogenic Calcrete

Pedogenic calcrete was encountered in 52 of the 60 trial pits and weakly calcified material was observed in some of the remaining test pits. The calcrete was encountered in various forms, but was typically hardpan calcrete with lesser nodular and honeycomb calcrete. The calcrete was normally encountered beneath the aeolian soils and extended to a maximum of approximately 1.0 to 1.2 m depth. Calcrete boulders were often observed within the aeolian sands. Hardpan calcrete was typically described at white to beige in colour and was generally cemented to strongly cemented. Large calcrete boulders were common within the trial pits. Very slow and difficult excavation conditions were observed within the hardpan calcrete. Although the TLB was able to penetrate through weaker or fractured zones within the hardpan calcrete at a large proportion of the test positions, refusal on hardpan was a common occurrence. A large proportion of the hardpan calcrete and calcrete boulders were described as “hard rock” consistency and will not break down under compaction. The occurrence of hardpan calcrete was highly variable over short distances, both laterally and vertically within the individual trial pits. Concretions of hardpan calcrete were often surrounded by loose to very loose sandy or gravelly soils. Bands of hardpan calcrete were found to be underlain by loose material at some test positions. However the thickness of the looser material was generally limited. Where the trial pits were able to penetrate through the calcrete, the underlying material was typically weathered granitoid rock. The parent material for some of the hardpan calcrete was observed to be weathered granite rock and bands of weathered rock occurred within the calcrete at many test positions.

7.1.4. Weathered Granitoid Rock

Weathered bedrock was encountered in 46 of the 60 trial pits at depths ranging from 0.30 to 1.30 m below ground level. Excavation into weathered bedrock at the remaining trial pits was not possible due to refusal of the TLB on hardpan calcrete. The bedrock encountered at Site 5 and Site 6 was typically described as white speckled light grey and grey, medium to coarse grained granite or granite gneiss. The rock showed varying degrees of weathering, ranging from highly weathered to medium weathered and was typically soft becoming medium hard rock hardness with depth, although hard rock was observed in some trial pits.



The bedrock observed at Site 1 showed more variation than the rock observed at Sites 5 and 6 and was described as ranging in composition from granite, granite gneiss to schist. The depth of penetration of the TLB into the weathered rock ranged from an average of 0.18 m at Site 1 to 0.52 m at Site 6.

7.2. Groundwater

Groundwater seepage was not observed in any of the trial pits.

8. COMPARATIVE ASSESSMENT OF THE SITES A summary of the ground conditions encountered in the trial pits at each site is provided in Tables 8.1 to 8.3. The investigation indicates that a broadly similar soil profile was encountered at all three sites. However the important differences were noted in the average thickness of the aeolian sands, depth to bedrock and hardness of the bedrock between the sites.

Site 1 Site 5 Site 6 Average thickness of aeolian sands: 0.27 m 0.34 m 0.64 m Average depth to weathered bedrock (Where encountered in the trial pits) 0.77 m 0.73 m 0.96 m Average excavation depth into bedrock 0.18 m 0.36 m 0.52 m



Table 8.1: Summary of geotechnical conditions - Site 1

Notes: 1) Refusal depth indicated in bold 2) x denotes material not present or significantly represented in profile 3) MHR = Medium hard rock 4) HR = Hard rock

Trial Pit No.

Aeolian Sand (thickness m)

Transported / Residual Gravel

Calcrete Bedrock Ground Conditions at Refusal

Notes

TP1 0.70 0.7 - 1.3 (boulders) 1.30 - 1.35 HR granitoid Large HR calcrete boulders

TP2 0.50 0.50 – 0.70 0.70 – 1.00 x Hardpan calcrete

TP3 0.40 x 0.40 – 1.20 1.20 – 1.50 MHR granite Variable depth to calcrete

TP4 x x 0 – 0.90 x Hardpan calcrete

TP5 0.30 (within calcrete) 0.20 – 1.40 x Hardpan calcrete

TP6 0.40 0.40-0.60 0.60 – 0.65 x Hardpan calcrete Hardpan surface variable 0.40 – 0.70 m

TP7 0.40 0.40 – 0.80 (within gravel) 0.80 – 1.20 MHR Schist Bedrock depth variable 0.80 – 1.10 m

TP8 0.30 x 0.30 – 0.70 0.70 – 1.10 MHR – HR Granite gneiss Hardpan surface variable 0.20 – 0.50 m

TP9 0.35 0.35 – 0.60 0.60 – 1.00 1.00 – 1.05 MHR – HR Granite gneiss Variable refusal depth

TP10 0.20 0.20 – 0.60 x 0.60 – 0.70 HR Granite

TP11 0.35 0.35 – 0.40 0.40 – 0.60 0.60 – 0.75 MHR – HR Granite

TP12 0.20 x 0.20 – 0.70 0.70 – 1.00 MHR Granite gneiss

TP13 0.30 x 0.30 – 0.90 0.90 – 1.00 MHR Granite gneiss Hardpan surface variable 0.20 – 0.40 m

TP14 0.60 x (within gravel) 0.60 – 0.80 MHR - HR Schist Sand depth variable 0.30 – 0.60 m

TP15 0.15 x 0.15 – 0.60 0.60 HR Schist Hardpan surface variable 0.10 – 0.30 m

TP16 0.20 x 0.20 – 0.80 0.80 – 0.85 MHR – HR Granite gneiss Hardpan surface variable 0.10 – 0.30 m

TP17 0.30 x 0.30 – 0.50 x Hardpan calcrete

TP18 0.20 x 0.20 – 0.85 0.85 HR granitoid

TP19 0.20 0.20 – 0.30 x 0.30 – 0.65 HR granite

TP20 0.30 0.30 – 0.60 x 0.60 – 0.80 MHR – HR Granite gneiss





Trial Pit No.




Notes


TP2 0.50 0.50 – 0.80 0.80 – 1.00 1.00 – 1.30 MHR – HR granite

TP3 0.50 0.50 – 0.70 0.70 – 1.00 1.00 – 1.30 SR granite gneiss Sand depth variable 0.30 – 0.70 m

TP4 0.20 (within calcrete) 0.20 – 1.20 x Hardpan calcrete Sand depth variable 0.20 – 0.60 m

TP5 0.40 (within calcrete) 0.40 – 1.40 x Hardpan calcrete Sand depth variable 0.20 – 0.60 m

TP6 0.30 (within calcrete) 0.30 – 0.80 0.80 – 0.95 MHR granite Refusal depth variable 0.30 – 0.95 m

TP7 0.30 x 0.30 – 0.70 0.70 – 0.80 MHR – HR granite Calcified granite at refusal depth

TP8 0.35 (within calcrete) 0.35 – 0.50 0.50 – 0.80 MHR – HR granite Sand depth variable 0.15 – 0.40 m

TP9 0.20 (within calcrete) 0.20 – 0.60 0.60 – 0.75 MHR granite Refusal depth variable 0.60 – 0.75 m

TP10 0.10 x 0.10 – 0.80 0.80 – 1.10 MHR granite

TP11 0.50 0.50 – 0.60 x 0.60 – 1.60 MHR – HR granite

TP12 0.50 0.50 – 0.60 x 0.60 – 0.95 MHR granite

TP13 0.25 0.25 – 0.60 (within gravel) 0.60 – 1.00 MHR granite

TP14 0.40 0.40 – 0.75 0.75 – 1.00 1.00 – 1.10 MHR granite Bedrock level variable 0.90- 1.10 m

TP15 0.30 (within calcrete) 0.30 – 0.85 x Hardpan calcrete

TP16 0.20 x 0.20 – 0.90 0.90 – 1.30 MHR granite

TP17 0.20 0.20 – 0.35 (within bedrock) 0.35 – 0.90 MHR – HR granite

TP18 0.30 x x 0.30 – 1.10 MHR granite Sand depth variable 0.30 – 0.40 m

TP19 0.50 (within calcrete) 0.50 – 0.80 0.80 – 1.10 MHR - HR granite Sand depth variable 0.20 – 0.50 m

TP20 0.50 (within calcrete) 0.50 – 1.20 1.20 – 1.30 MHR granite





Trial Pit No.




Notes

TP1 0.05 x 0.05 – 0.40 x Hardpan calcrete Hardpan surface variable 0.05 – 0.15 m


TP3 0.60 x 0.60 – 1.10 1.10 MHR – HR granite gneiss Hardpan surface variable 0.30 – 0.90 m

TP4 0.60 x 0.60 – 1.25 1.25 MHR granite gneiss Hardpan surface variable 0.20 – 0.80 m

TP5 0.30 (within calcrete) 0.30 – 0.70 0.70 – 0.90 MHR granite gneiss Hardpan surface variable 0.20 – 0.40 m

TP6 0.60 0.60 – 0.80 0.80 – 1.30 1.30 – 1.40 MHR granite gneiss

TP7 0.80 (within calcrete) 0.80 – 1.40 1.40 – 1.70 SR granite Hardpan surface variable 0.30 – 1.00 m

TP8 0.90 x 0.90 – 1.70 1.70 Hardpan / granite Hardpan surface variable 0.80 – 1.20 m

TP9 1.00 x (within bedrock) 1.00 – 1.70 MHR – HR granite Sand depth variable 0.80 – 1.20 m

TP10 0.60 (within calcrete) 0.60 – 1.20 x Hardpan calcrete Hardpan surface variable 0.60 – 0.90 m

TP11 0.25 x 0.25 – 0.60 0.60 MHR – HR granite Hardpan surface variable 0.25 – 0.40 m

TP12 0.50 0.50 – 0.60 (within bedrock) 0.60 – 1.10 SR granite Sand depth variable 0.20 – 0.60 m

TP13 1.30 x (within bedrock) 1.30 – 1.80 MHR granite gneiss Sand depth variable 0.90 – 1.30 m


TP15 0.70 (within calcrete) 0.70 – 1.20 1.20 – 2.00 MHR – HR granite gneiss Hardpan surface variable 0.20 – 1.00 m

TP16 0.70 0.70 – 0.80 x 0.80 – 1.75 MHR granite gneiss

TP17 0.40 (within calcrete) 0.40 – 0.90 0.90 – 1.10 MHR granite gneiss Sand depth variable 0.30 – 0.40 m


TP19 0.70 x (within bedrock) 0.70 – 1.60 HR granite Sand depth variable 0.60 – 0.80 m

TP20 0.60 x (within bedrock) 0.60 – 0.75 HR granite Sand depth variable 0.40 – 0.70 m



9. CONCLUSIONS This factual report contains the results of the geotechnical field investigations undertaken at three alternative sites for the proposed construction of a substation near Upington in the Northern Cape. The investigation indicates that a broadly similar soil profile exists at all three sites. However the important differences were noted in the average thickness of the aeolian sands, depth to bedrock and hardness of the bedrock between the sites. Further discussion on the suitability of the sites for the proposed construction of cut to fill platforms will be provided once the results of laboratory testing of soil samples are available. 10. REFERENCES 1. Jennings, J.E., Brink, A.B.A. and Williams, A.A.B. (1973). Revised Guide to Soil Profiling

for Civil Engineering Purposes in Southern Africa. Transactions of the South African Institution of Civil Engineers, Vol. 15.

2. Core Logging Committee of the South African Section of the Association of Engineering

Geologists (1976). A Guide to Core Logging for Rock Engineering. Proceedings of the Symposium on Exploration for Rock Engineering, Johannesburg.

3. Johnson, M.R., Anhausser, C.R., Thomas, R.J. (1996) The Geology of South Africa. The

Geological Society of South Africa and the Council for Geoscience. 4. Weinert, H. H. (1964) Basic igneous rocks in road construction. Research Report 218,

CSIR, Pretoria.



APPENDIX A: GEOTECHNICAL INVESTIGATION LAYOUT PLANS

http://www.docudesk.com





APPENDIX B: TRIAL PIT LOGS

0--0.70m

ESKOMUPPINGTON SOLAR PARK SUBSTATION - SITE 1

HOLE No: TP01Sheet 1 of 1


JOB NUMBER: 3142JOB NUMBER: 3142

0.70

0.00

1.30

1.35

Dry, orange brown, loose to very loose, intact, with open-voided pinholestructure, gritty SILTY SAND with large hard rock calcrete boulders:Aeolian / Pedogenic.

Dry, beige, medium dense, intact, fine GRAVEL and rock fragmentcobbles with interstitial SILTY SAND and large calcrete BOULDERS:Hillwash.

Light grey mottled white, slightly weathered, massive, closely to mediumjointed, very coarse grained, hard rock GRANITOID: Keimoes Suite.

Scale1:10

NOTES

1) No ground water seepage.

2) Refusal at 1.35m.

3) Indicator sample taken 0--0.70m.

CONTRACTOR :MACHINE :

DRILLED BY :PROFILED BY :

TYPE SET BY :SETUP FILE :

HENLEC BKJCB TLB (300mm bucket)

S BOKR. GUNDRYTP-JG-A4.SET

INCLINATION :DIAM :DATE :DATE :

DATE :TEXT :

21-22/10/201226/10/12 11:55..C:\DOTPLOT\UPPING~2.TXT

ELEVATION :X-COORD :Y-COORD :

21 03 30.2 E28 26 09.0 S

dot.PLOT 5008 J&W D06C D48

HOLE No: TP01HOLE No: TP01





0.50

0.00

0.70

1.00

Dry, orange brown, very loose, intact with weakly developed open-voidedstructure, gritty SILTY SAND: Aeolian.Variable depth 0.50 to 0.60m.

Dry, beige, loose to medium dense, intact, fine GRAVEL in a SILTYSAND matrix: Colluvium.Scattered hard rock calcrete BOULDERS.

White, speckled light grey, weakly cemented to cemented, laminated,HARDPAN CALCRETE: Pedogenic.Granite gneiss parent material.

White speckled grey, strongly cemented HARDPAN CALCRETE orcalcified granite gneiss.

Scale1:10

NOTES


2) Refusal at 1.0m.

3) No sample taken.







DATE :TEXT :



21 03 33.1 E28 26 13.1 S







0.40

0.00

1.20

1.50

Dry, orange brown, loose, intact with weakly developed open-voidedstructure, gritty SILTY SAND: Aeolian.Depth variable 0.30 to 0.50m.

Beige to white, cemented to weakly cemented to strongly cemented,nodular to HARDPAN CALCRETE with zones of SILTY SANDY GRAVELwith interstitial silty sand.Boulders and cobbles of hard rock hardness.

White speckled light grey and grey, highly weathered to mediumweathered, massive, calcified, medium grained, medium hard rockGRANITE: Keimoes Suite.Rock friable to marginally friable.

Scale1:10

NOTES


2) No refusal but very slow advance.

3) No sample taken.

4) Sidewall collapse in loose sands.







DATE :TEXT :



21 03 36.1 E28 26 17.3 S



0-0.80m





0.80

0.00

0.90

Dry, orange brown, loose to very loose, intact with open-voided pinholestructure, gritty SILTY SAND with bands of cemented to stronglycemented HARDPAN CALCRETE and large BOULDERS with interstitialsilty sand.Very loose gravelly silty sand underlies hardpan calcrete layers.

White to beige, cemented, massive to weakly laminated HARDPANCALCRETE: Pedogenic.

Scale1:10

NOTES



3) Indicator sample taken 0-0.80m.








DATE :TEXT :



21 03 34.4 E28 26 22.0 S







0.20

0.00

0.70

1.40

Dry, orange brown, loose to very loose, intact, slightly gravelly, grittySILTY SAND: Aeolian.Depth variable 0.10 to 0.20m.

White to beige, weakly cemented to cemented becoming stronglycemented in layers, HARDPAN CALCRETE with zones of nodularcalcrete and silty fine gravel with interstitial silty sand: Pedogenic.Recovered as angular medium hard to hard rock cobbles and smallboulders in a silty sand matrix.

White mottled orange brown, weakly cemented (loose to medium denseto dense consistency) NODULAR CALCRETE with interstitial SILTYSAND: Pedogenic with zones of dry, orange brown speckled beige, looseto very loose fine gravel in a silty sand matrix between 0.8 - 1.2 m:Colluvium.

Scale1:10

NOTES


2) Refusal at 0.70m

3) No sample taken.








DATE :TEXT :



21 03 35.6 E28 26 24.1 S







0.40

0.00

0.60

0.65

Dry, orange brown, loose, intact with open-voided structure, gritty SILTYSAND: Colluvium.

Dry, orange brown mottled beige, loose to medium dense, intact, fineGRAVEL in a SILTY SAND matrix: Colluvium.

Beige to white speckled grey, cemented to strongly cemented, weaklylayered, HARDPAN CALCRETE: Pedogenic.Hardpan surface variable 0.40 to 0.70m.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 03 32.2 E28 26 19.4 S







0.40

0.00

0.80

1.20

Dry, orange brown, very loose, intact with weakly developed open-voidedstructure, gritty SILTY SAND: Aeolian./Variable depth 0.30 to 0.40m.

Dry, beige, loose to medium dense, intact, fine GRAVEL in a SILTYSAND matrix: Colluvium.Containing thin bands of hardpan calcrete.Base depth variable 0.80 to 1.10m.

Beige to light orange speckled grey, highly weathered to mediumweathered, calcified, laminated, fine grained, soft rock to medium hardrock SCHIST: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 1.2m.

3) No sample taken.







DATE :TEXT :



21 03 29.3 E28 26 15.3 S







0.30

0.00

0.70

1.10

Dry, orange brown, loose to very loose, intact with open-voided pinholestructure, gritty SILTY SAND: Aeolian.Depth variable 0.20 to 0.50m.

HARDPAN CALCRETE, angular granite gneiss and schist rock fragmentsin a matrix of SILTY SANDY GRAVEL: Hillwash.

Grey speckled white, slightly weathered, weakly laminated and mediumfractured, fine grained, medium hard to hard rock, GRANITE GNEISS withbands of dark grey schist: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 1.10m (variable 0.60 to 1.10m)

3) No sample taken.







DATE :TEXT :



21 03 26.4 E28 26 11.1 S







0.35

0.00

0.60

1.00

1.05

Dry, orange brown, loose, intact, gritty slightly gravelly SILTY SAND:Aeolian.

Dry beige to light grey, medium dense to dense, intact, fine GRAVEL in amatrix of orange brown SILTY SAND: Colluvium.Calcareous to weakly cemented in zones.Base depth variable 0.60 to 0.80m.

White to beige mottled light grey, weakly cemented to cemented,HARDPAN CALCRETE: Pedogenic.Recovered as angular cobbles and boulders in a silty sand matrix.Transitional to calcareous granite gneiss.

White to beige speckled grey and mottled orange, medium weathered,massive to weakly laminated, fine to medium grained, medium hard tohard rock, GRANITE GNEISS: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 1.05 (variable 0.8 to 1.05m).

3) No sample taken.







DATE :TEXT :



21 03 21.7 E28 26 13.7 S



0.20--0.70m





0.20

0.00

0.60

0.70

Dry, orange brown, loose, intact with weakly developed open-voidedstructure, gritty SILTY SAND: Aeolian.

Dry, orange brown mottled beige, loose to medium dense with depth,intact, fine gravel and rock fragments in a SILTY SAND matrix: Colluvium.

Light grey mottled white, medium weathered, massive, closely jointed,medium to coarse grained, medium hard to hard rock quartziticGRANITE: Keimoes Suite. Recovered as medium to coarse gravel ofhard rock hardness.

Scale1:10

NOTES



3) Bulk sample taken 0.20--0.70m.







DATE :TEXT :



21 03 24.6 E28 26 17.8 S







0.35

0.00

0.40

0.60

0.75

Dry, orange brown, loose, intact with open-voided structure, gritty SILTYSAND: Colluvium.

Dry, orange brown mottled beige and brown, loose to medium dense,intact, fine GRAVEL and rock fragments in a SILTY fine SAND matrix:Colluvium.

Dry, orange brown speckled beige, medium dense to dense, intact, fineGRAVEL with interstitial SILTY SAND. Reworked completely weatheredgranite gneiss with zones of HARDPAN CALCRETE.

Light brown mottled white and grey, highly to medium weathered withdepth, massive, calcified, friable to marginally friable, coarse grained, softto medium hard rock GRANITE: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 0.75m on calcified medium hard to hard rock granite.

3) No sample taken.







DATE :TEXT :



21 03 27.5 E28 26 21.9 S







0.20

0.00

0.70

1.00

Dry, orange brown, loose to very loose, intact, slightly gravelly, grittySILTY SAND: Aeolian.

White to beige, weakly cemented to cemented with strongly cementedlayers, laminated, HARDPAN CALCRETE with minor nodular calcretezones near surface with minor interstitial silty sand: Pedogenic.

Light grey speckled white and grey brown, stained orange on fractures,highly weathered to medium weathered, massive, friable to marginallyfriable, calcified in zones, soft rock to medium hard rock GRANITEGNEISS: Keimoes Suite.Upper surface variable 0.60 to 0.80m.

Scale1:10

NOTES


2) Refusal at 100m. (Variable 0.50 to 1.00m).

3) No sample taken.







DATE :TEXT :



21 03 30.9 E28 26 26.77 S



0.30--0.90m





0.30

0.00

0.90

1.00

Dry, orange brown, loose to very loose, intact, slightly gravelly, grittySILTY SAND: Aeolian.Depth variable 0.20 to 0.40m.

White to beige, weakly cemented to cemented with strongly cementedlayers, laminated, HARDPAN CALCRETE with minor nodular calcretezones near surface with minor interstitial silty sand and zones of finegravel: Pedogenic.

Light grey speckled white and grey brown, stained orange on fractures,highly weathered to medium weathered, massive, friable to marginallyfriable, calcified in zones, soft rock to medium hard rock GRANITEGNEISS: Keimoes Suite.

Scale1:10

NOTES



3) Indicator sample taken 0.30--0.90m.







DATE :TEXT :



21 03 26.2 E28 26 29.3 S







0.60

0.00

0.80

Dry, orange brown, loose, intact with open-voided structure, gritty SILTYSAND: Colluvium with layers and boulders of HARDPAN CALCRETEbelow 0.20m./Depth variable 0.30 to 0.60m.

White speckled greenish grey, highly weathered, calcified, medium hardrock SCHIST with zones of orange brown SILTY GRAVEL: Keimoes Suite.

Grey speckled dark grey and white, medium weathered, calcified, closelyjointed, medium hard to hard rock SCHIST: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 0.80m (variable 0.4 to 0.80m).

3) No sample taken.







DATE :TEXT :



21 03 22.9 E28 26 24.5 S







0.15

0.00

0.60

Dry, orange brown, loose, intact, with weakly developed open-voidedstructure, slightly gravelly, gritty SILTY SAND: Aeolian.Depth variable 0.10 to 0.30m.

White to beige mottled grey, cemented to strongly cemented, laminated,HARDPAN CALCRETE with zones of SILTY fine GRAVEL with interstitialSILTY SAND: Pedogenic.

White mottled beige and greenish grey, calcified (cemented), laminated,highly weathered to medium weathered, micaceous SCHIST: KeimoesSuite.Overall hardness of hard rock.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 03 19.9 EE28 26 20.4 S







0.20

0.00

0.80

0.85

Dry, orange brown, loose, intact, SILTY SANDY fine GRAVEL containingangular rock fragment cobbles: Colluvium.Depth variable 0.10 to 0.30m.

Dry, beige to white speckled light grey, cemented to strongly cemented inlayers, laminated, HARDPAN CALCRETE with minor interstitial SILTYSAND: Pedogenic.Recovered as angular cobbles and boulders of medium hard to hard rockhardness.

White speckled grey and stained orange on fractures, medium weathered,weakly foliated, medium grained, medium hard to hard rock GRANITEGNEISS: Keimoes Suite with thin layers of HARDPAN CALCRETE.

Scale1:10

NOTES


2) Refusal at 0.85m. (variable at 0.30 to 0.85m).

3) No sample taken.







DATE :TEXT :



21 03 17.0 E28 26 16.3 S



0--0.30m





0.30

0.00

0.45

0.50

Dry, orange brown, loose, intact, SILTY SANDY fine GRAVEL containingangular rock fragment cobbles: Colluvium.

Dry, white to beige speckled grey, weakly cemented to cemented,laminated, nodular to HARDPAN CALCRETE: Pedogenic.

Beige speckled light grey, strongly cemented, massive, HARDPANCALCRETE: Pedogenic.Material of hard rock hardness.Variable surface depth.

Scale1:10

NOTES










DATE :TEXT :



21 03 12.4 E28 26 18.9 S







0.20

0.00

0.85

Dry, orange brown, loose, intact, with weakly developed open-voidedstructure, slightly gravelly, gritty SILTY SAND: Aeolian.

Beige to white speckled light grey, cemented to strongly cemented,HARDPAN CALCRETE: Pedogenic.ORWhite stained orange brown on rock surface, very coarse grained, hardrock, quartitic granitoid cobbles and boulders with zones of orange brownspeckled beige, loose to medium dense, intact, fine gravel and rockfragments in a SILTY SAND matrix: Colluvium.

Light grey mottled white and light green and stained orange on rocksurfaces, slightly weathered, closely fractured, coarse to very coarsegrained, hard rock quartzitic GRANITOID: Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 03 15.3 E28 26 23.0 S







0.20

0.00

0.30

0.65

Dry, orange brown, loose, intact, with weakly developed open-voidedstructure, slightly gravelly, gritty SILTY SAND: Aeolian.

Dry, orange brown, loose, intact, SILTY SANDY GRAVEL:Colluvium/reworked weathered rock.Variable base depth 0.30 to 0.40m.

Light grey mottled white and stained orange brown on fractures, highlyweathered to medium weathered with depth, coarse grained, mediumhard to hard rock quartzitic GRANITE with interstitial silty sand: KeimoesSuite.

Light grey mottled white and slightly orange on rock surface, medium toslightly weathered, massive, coarse grained, hard rock, quartziticGRANITE: Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 03 18.2 E28 26 27.1 S







0.30

0.00

0.60

0.80

Dry, orange brown, loose, intact with open-voided pinhole structure,gravelly, gritty SILTY SAND: Aeolian.

Dry, orange brown speckled and mottled beige, medium dense to densewith depth, intact, fine to medium GRAVEL with interstitial SILTY SAND:Hillwash or reworked residual.

White speckled cream and light grey, stained orange on joints andfractures, medium weathered, massive, weakly calcified, medium tocoarse grained, medium hard to hard rock, GRANITE GNEISS: KeimoesSuite.Marginally friable to hard.

Scale1:10

NOTES


2) Refusal at 0.80m (variable 0.60 to 0.80m).

3) No sample taken.







DATE :TEXT :



21 03 21.5 E28 26 31.9 S







0.30

0.00

0.60

1.00

Dry, orange brown, loose to very loose, intact, with weakly developedopen-voided structure, gritty SILTY SAND: Aeolian.

Dry, white to beige speckled light grey, weakly cemented to cementedHARDPAN CALCRETE with zones of nodular calcrete with interstitialorange brown SILTY SAND: Pedogenic.ORBeige to white speckled light grey, cemented, layered HARDPANCALCRETE recovered as cobbles and small boulder sized hard rockfragments.

Beige to white speckled light grey, cemented, HARDPAN CALCRETErecovered as medium hard to hard rock fragments. Variable upper contactwith fine gravel layer.

Scale1:10

NOTES



3) No sample taken.




HENLEC BKJCB TLB (300mm BUCKET)



DATE :TEXT :



22 08 37.1 E28 30 40.1 S







0.50

0.00

0.80

1.00

1.30

Dry, light orange brown, loose to very loose with weakly developedpinhole structure, slightly gravelly, gritty SILTY SAND: Aeolian.

Dry, light orange speckled beige, loose to medium dense, intact, fineGRAVEL with interstitial SILTY SAND: Colluvium.

Dry, white speckled beige, dense, very weakly cemented, NODULARCALCRETE: Pedogenic. Parent material weathered granite.

White speckled light grey and black, highly weathered, massive, calcified,very soft to soft rock, medium to coarse grained GRANITE GNEISS:Keimoes Suite.ORLight grey, highly to medium weathered, massive, medium jointed,medium hard to hard rock GRANITE: Keimoes Suite.

Scale1:10

NOTES


2) No refusal but very slow advance or refusal at 1.0m.

3) No sample taken.







DATE :TEXT :



22 08 38.4 E28 30 44.7 S







0.50

0.00

0.70

1.00

1.30

Dry, orange brown, loose to very loose, intact, with very weaklydeveloped pinhole structure, gritty SILTY SAND with scattered calcretefragments and cobbles at base: Aeolian.Depth variable 0.30 to 0.70m.

Dry, orange brown speckled beige, loose to medium dense, intact, fineGRAVEL with interstitial SILTY SAND and scattered weathered graniterock fragments: Colluvium.

Dry, white speckled beige, medium dense, very weakly cemented,NODULAR CALCRETE: Pedogenic. Parent material weathered granite.

White speckled light grey and black, highly weathered, massive, calcified,very soft to soft rock, medium to coarse grained GRANITE GNEISS:Keimoes Suite.

Scale1:10

NOTES


2) No refusal but slow advance.

3) No sample taken.







DATE :TEXT :



22 08 39.8 E28 30 49.4 S







0.20

0.00

0.70

1.20

Dry, orange brown, loose to very loose, intact, gritty SILTY SANDcontaining calcrete nodules with depth: Aeolian.Depth variable 0.20 to 0.60m.

Beige to light orange brown to cream, cemented to strongly cemented,undulating HARDPAN CALCRETE with interstitial SILTY SAND in jointsand fractures: Pedogenic.Recovered as cobbles and boulder size fragments of hard rockconsistency.

White to mottled orange brown, weakly cemented (medium dense todense overall consistency) NODULAR CALCRETE with interstitial orangebrown SILTY SAND: Pedogenic with zones of dry, orange brownspeckled beige, loose to very loose, fine gravel in a silty sandmatrix./Completely weathered granite material observed at base of trial pit.

Scale1:10

NOTES



3) Difficult excavation through hardpan calcrete.

4) No sample taken.







DATE :TEXT :



22 08 41.3 E28 30 54.8 S







0.40

0.00

0.80

1.40

Dry, orange brown, loose to very loose with an open-voided pinholestructure, gritty SILTY SAND: Aeolian.Depth variable 0.20 to 0.60m.

Beige to light orange brown to cream, cemented to strongly cemented,discontinuous HARDPAN CALCRETE in bands 200mm to 300mm thickwith interstitial SILTY SAND in joints and fractures: Pedogenic.Hardpan layer not present in sections of the trench.

White mottled orange brown, weakly cemented (loose to medium denseto dense consistency) NODULAR CALCRETE to homeycomb calcretewith interstitial SILTY SAND: Pedogenic.Zones of dry, orange brown speckled beige, loose to very loose finegravel in a silty sand matrix between 0.8 - 1.2 m interpreted as re-workedresidual granite or colluvium.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 36.9 E28 30 55.8 S







0.30

0.00

0.80

0.95

Dry, orange brown, loose to very loose, intact, with weakly developedpinhole structure, gritty SILTY SAND with scatted calcrete fragments:Aeolian.

White to beige, cemented to strongly cemented in bands with layers ofweakly cemented HARDPAN CALCRETE with minor interstitial SILTYSAND: PedogenicORDry, light orange brown, loose, intact fine gravel with interstitial SILTYSAND: Colluvium. Gravel underlies hardpan in sections of the trial pit.

White speckled light grey and mottled orange, calcified, highly weathered,medium to coarse grained, friable to marginally friable, medium hard rockGRANITE: Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 35.4 E28 30 50.4 S



0--0.50m





0.30

0.00

0.70

0.80

Dry, orange brown, loose to very loose, intact, with weakly developedopen-voided structure, gritty SILTY SAND: Aeolian.Depth variable 0.10 to 0.50m.

Dry, white to beige, cemented, layered, HARDPAN CALCRETE ofmedium hard to hard rock hardness with interstitial SILTY SAND:Pedogenic.

White speckled grey, strongly cemented, HARDPAN CALCRETE withbands of highly to medium weathered, calcified medium hard to hard rockGRANITE: Keimoes Suite.

Scale1:10

NOTES










DATE :TEXT :



22 08 34.0 E28 30 45.7 S



0.35--0.80m





0.35

0.00

0.50

0.80

Dry, orange brown, loose to very loose, intact, with weakly developedopen-voided structure, gritty SILTY SAND: Aeolian. with cobble layer atbase.Depth variable 0.15 - 0.40.

Dry, white to beige speckled light grey, weakly cemented to cementedHARDPAN CALCRETE with zones of nodular calcrete with interstitialorange brown SILTY SAND: Pedogenic.ORDry orange brown speckled beige, loose to medium dense, intact, fineGRAVEL with interstitial SILTY SAND: Colluvium.

Light grey speckled grey and white, highly to medium weathered,massive, medium fractured, medium hard to hard rock: GRANITEGNEISS: Keimoes Suite.

Scale1:10

NOTES


2) Refusal depth varied 0.50--0.80m.








DATE :TEXT :



22 08 32.7 E28 30 40.9 S







0.20

0.00

0.60

0.75

Dry, orange brown, loose to very loose, intact with weakly developedopen-voided structure, gritty SILTY SAND: Aeolian.

Dry, white to beige speckled light grey, weakly cemented to cementedHARDPAN CALCRETE with zones of nodular calcrete with interstitialorange brown SILTY SAND: Pedogenic.ORDry orange brown speckled beige, loose to medium dense, intact, fineGRAVEL with interstitial SILTY SAND: Colluvium.

White speckled light grey, highly to medium weathered, massive, mediumgrained, calcified, soft to medium hard rock GRANITE: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at depths of between 0.60--0.75m.

3) No sample taken.







DATE :TEXT :



22 08 27.3 E28 30 42.2 S



0.10--1.10m





0.10

0.00

0.80

1.00

1.10

Dry, orange brown, loose to very loose, intact, with weakly developedopen-voided structure, gritty SILTY SAND with calcrete cobbles: Aeolian.

Dry, white to beige speckled light grey, cemented to strongly cemented,layered HARDPAN CALCRETE typically of hard rock hardness with minormedium hard rock hardness. Recovered as gravel and small bouldersized fragments in a sandy matrix.

Beige speckled grey, orange brown and black, highly weathered,massive, calcified, medium to coarse grained, soft rock to medium hardrock GRANITE: Keimoes Suite.

Beige speckled grey, orange brown and black, highly weathered,massive, calcified, medium to coarse grained, medium hard rockGRANITE: Keimoes Suite.

Scale1:10

NOTES



3) Refusal at most parts of test pit at shallow depth on hardpan calcrete.








DATE :TEXT :



22 08 28.7 E28 30 46.9 S



0.60--1.60m





0.50

0.00

0.60

1.60

Dry, orange brown, loose to very loose, voided, (weakly developedpinhole structure) gritty SILTY SAND: Aeolian.

Dry, orange brown speckled beige, loose to medium dense, intact, finegravel in a SILTY SAND matrix containing weathered granite rockfragments: Colluvium.Layer of variable thickness between 50 to 300mm.

Light grey speckled white and black, highly weathered to mediumweathered at base of hole, massive, calcified, coarse grained, soft tomedium hard with zones of closely fractured hard rock, GRANITE:Keimoes Suite.Rock friable to marginally friable to hard. Recovered as sandy gravel.

Scale1:10

NOTES










DATE :TEXT :



22 08 30.0 E28 30 51.6 S







0.50

0.00

0.60

0.95

Dry, orange brown speckled beige, very loose, voided (weakly developedpinhole structure) gritty SILTY SAND: Aeolian.

Dry, light orange brown to beige, loose, intact, fine GRAVEL in a SILTYSAND matrix: Colluvium.

Light grey speckled white and black, highly weathered to mediumweathered at base of hole, massive, calcified, medium to coarse grained,soft to medium hard rock GRANITE: Keimoes Suite.Rock friable to coarse sandy gravel.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 31.6 E28 30 57.0 S







0.25

0.00

0.60

1.00

Dry, orange brown, very loose, intact, gritty SILTY SAND: Aeolian.

Dry, light orange brown speckled beige, loose, intact, fine calcifiedGRAVEL with interstitial SILTY SAND containing weathered granite rockfragments: ColluviumORWhite to beige, weakly cemented to cemented, closely fracturedHARDPAN CALCRETE: Pedogenic.Recovered as calcrete cobbles and boulders or medium hard to hard rockhardness.

Light grey speckled white and black, highly weathered to mediumweathered at base of hole, massive, calcified, medium to coarse grained,soft to medium hard rock, GRANITE: Keimoes Suite.Rock friable to coarse sandy gravel.

Scale1:10

NOTES



3) Difficult excavation in hardpan calcrete.

4) No sample taken.







DATE :TEXT :



22 08 26.3 E28 30 58.2 S







0.40

0.00

0.75

1.00

1.10

Dry, orange brown, loose to very loose, voided (weakly developed pinholestructure), gritty SILTY SAND: Aeolian.

Dry, orange brown mottled beige and white, loose, intact, fine calcareousGRAVEL with interstitial SILTY SAND: Colluvium.

Dry, white to beige, weakly cemented to cemented, HARDPANCALCRETE to weakly developed hardpan calcrete: Pedogenic.Pavement material variable, sand and residual granite.Depth variable 0.90 to 1.10m.

White speckled beige and mottled orange, highly weathered, calcified,massive, medium to coarse grained, medium hard rock, GRANITE:Keimoes Suite.Upper depth variable 0.90 to 1.10m.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 24.7 E28 30 52.8 S







0.30

0.00

0.85

Dry, orange brown, loose to very loose, intact with weakly developedopen-voided structure, gritty SILTY SAND: Aeolian.Depth variable 0.10 to 0.40m.

Dry, white to beige speckled light grey, cemented with weakly cementedzones, layered HARDPAN CALCRETE with interstitial orange brownSILTY SAND: Pedogenic. Zones of orange brown speckled beige, loose,fine gravel in a silty sand matrix: Colluvium.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 23.3 E28 30 47.2 S







0.20

0.00

0.90

1.30


Dry, white to beige speckled light grey, weakly cemented to cementedHARDPAN CALCRETE with zones of nodular calcrete with interstitialorange brown SILTY SAND: Pedogenic.

White speckled light grey, highly to medium weathered, massive, mediumto coarse to very coarse grained, calcified, soft to medium hard rockGRANITE: Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 22.0 E28 30 43.4 S



0.20--0.35





0.20

0.00

0.35

0.70

0.90


Dry, orange brown, speckled beige, loose, intact, fine gravel and graniterock fragments in a SILTY SAND matrix: Reworked residual or colluvium.

White mottled light orange and speckled black, completely to highlyweathered, massive, medium to coarse grained, friable, soft rockGRANITE: Keimoes Suite.ORWhite speckled light grey, cemented HARDPAN CALCRETE underlain byslightly weathered, calcified, medium fractured, hard rock graniterecovered as angular cobbles and small boulder sized rock fragments.

White to beige speckled light grey and black, medium weathered,massive, medium to coarse grained GRANITE: Keimoes Suite.Recovered as coarse sandy gravel.

Scale1:10

NOTES


2) Refusal at 0.9m.

3) Indicator sample taken 0.20--0.35.







DATE :TEXT :



22 08 16.6 E28 30 44.5 S







0.30

0.00

0.90

1.10

Dry, orange brown, loose to very loose, intact with weakly developedopen-voided structure, gritty SILTY SAND with a cobble layer at base:Aeolian.Depth variable 0.30-0.40.

White speckled grey, highly weathered, laminated, calcified, medium hardrock GRANITE with silty sand along joints and fractures: Keimoes Suite.

White speckled light grey and black, medium to highly weathered,massive, medium to coarse grained, medium hard rock GRANITE:Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 18.0 E28 30 49.3 S







0.50

0.00

0.80

1.15

Dry, orange brown, loose to very loose, voided (weakly developed pinholestructure), gritty SILTY SAND: Aeolian.Depth variable 0.20 to 0.50m.

Dry, orange brown mottled beige, loose to medium dense, intact, fineGRAVEL with interstitial SILTY SAND: Colluvium.ORDry, white to beige, weakly cemented to cemented, HARDPANCALCRETE layered with bands of nodular calcrete with interstitial siltysand: Pedogenic.

Light grey speckled white and black, highly weathered to mediumweathered at base of hole, massive, calcified, medium to coarse grained,soft to medium hard rock GRANITE: Keimoes Suite.Rock friable to coarse sandy gravel.Transitional to hard rock at base of excavation.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



22 08 19.3 E28 30 54.0 S



0--0.50m





0.50

0.00

1.20

1.30

Dry, orange brown, very loose, intact, with with open-voided pinholestructure, gritty SILTY SAND: Aeolian.

Dry, white to beige, weakly cemented to cemented HARDPANCALCRETE layered with bands of nodular calcrete with interstitial SILTYSAND: Pedogenic.ORDry, orange brown speckled beige, loose, intact, fine gravel withinterstitial silty sand: Colluvium.

Light grey speckled white and black, highly weathered to mediumweathered at base of hole, massive, calcified, medium to coarse grained,soft to medium hard rock, GRANITE: Keimoes Suite.Rock friable to coarse sandy gravel.

Scale1:10

NOTES










DATE :TEXT :



22 08 20.9 E28 30 59.4 S



ESKOMUPPINGTON SOLAR PARK SUBSTATIONS - SITE 6



JOB NUMBER: 3142/1JOB NUMBER: 3142/1

0.05

0.00

0.40

0.40

Dry, orange brown, loose, intact, gritty, SILTY SAND: Aeolian.

Beige to white speckled light grey, cemented, HARDPAN CALCRETEconsisting of cemented very coarse angular Quartz fragments in acalcareous matrix: Pedogenic.Recovered as angular cobbles and boulders of hard rock hardness.

Beige to white speckled light grey, strongly cemented, HARDPANCALCRETE consisting of cemented very coarse angular quartz fragmentsin a calcareous matrix: Pedogenic.Appears to be of coarse grained granite origin.

Scale1:10

NOTES



3) No sample taken.




HENLEK BKJCB TLB (300mm bucket)



DATE :TEXT :

19/20/201226/10/12 14:15..C:\DOTPLOT\UPPING~3.TXT


21 08 16.0 E28 32 45.5 S







0.60

0.00

1.30

Dry, orange brown, loose to very loose, intact, gritty, SILTY SAND:Aeolian.

Beige to white speckled light grey, cemented to strongly cemented,laminated, HARDPAN CALCRETE with minor interstitial SILTY SAND:Pedogenic.Contains bands of weathered granite gneiss parent material.Recovered as angular gravel and boulders of medium hard to hard rockhardness in a SILTY SAND matrix .

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 08 20.6 E28 32 48.0 S







0.60

0.00

1.10

Dry, orange brown, loose, intact, gritty SILTY SAND: Aeolian.Gravel layer at base.

Beige to white to white speckled grey, cemented HARDPAN CALCRETEwith minor zones of nodular ferricrete with interstitial SILTY SAND:Pedogenic.Weathered granite gneiss parent material.Recovered as sandy gravel and boulders, medium hard to hard rockhardness.

Calcified medium hard to hard rock GRANITE GNEISS: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 1.1m.

3) No sample taken.







DATE :TEXT :



21 08 25.5 E28 32 50.5 S







0.60

0.00

1.25

Dry to slightly moist, orange brown, loose, intact, gritty SILTY SAND:Aeolian.Gravel layer at base.Variable depth 0.60 to 0.80m.

Beige to white, weakly cemented to cemented, layered, HARDPANCALCRETE: Pedogenic.Transitional to highly weathered to medium weathered, white speckledgrey, calcareous, medium gravel, medium hard rock, granite gneiss withdepth.

Scale1:10

NOTES










DATE :TEXT :



21 08 30.9 E28 32 53.4 S







0.30

0.00

0.70

0.90

Dry, orange brown, loose to very loose, intact, with weakly developedpinhole structure, gritty SILTY SAND: Aeolian.Variable depth 0.20 to 0.40m.

Variable material. Beige to white cemented to weakly cemented,HARDPAN CALCRETE, transitional to weathered Granite GneissORDry, orange brown speckled beige, fine gravel and granite gneiss rockfragments in a SILTY SAND matrix: Colluvium.

White to cream speckled grey, highly weathered to medium weathered,massive, calcified, medium grained, soft rock to medium hard rockGRANITE GNEISS: Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 08 28.6 E28 32 56.8 S







0.60

0.00

0.80

1.30

1.40

Dry, light orange brown, loose, intact, with weakly developed pinholestructure, gritty SILTY SAND: Aeolian.

Dry or mottled beige, loose to medium dense, intact, fine GRAVEL andweathered granite gneiss rock fragments in a SILTY SAND matrix:Reworked residual.

White to beige, cemented HARDPAN CALCRETE with zones of nodularcalcrete with interstitial SILTY SAND: Pedogenic.Occasional large calcrete boulders.

White to cream speckled grey, highly weathered to medium weathered,massive, calcified, medium grained, soft rock to medium hard rockGRANITE GNEISS: Keimoes Suite

Scale1:10

NOTES



3) No sample taken.







DATE :TEXT :



21 08 23.2 E28 32 53.9 S







0.80

0.00

1.40

1.70

Dry, orange brown, loose to very loose, intact with weakly developedpinhole structure, gritty SILTY SAND: Aeolian.Variable depth 0.30 to 1.00m.

Beige to white, cemented to strongly cemented, widely laminatedHARDPAN CALCRETE with zones of nodular calcrete with interstitialSILTY SAND: Pedogenic.Recovered as large boulders and angular gravel in a silty sand matrix.

White speckled light grey and dark grey, highly weathered, weaklycalcified, massive, friable, medium grained, soft rock GRANITE: KeimoesSuite.

Scale1:10

NOTES



3) No sample taken.

4) Sidewall collapse of loose to very loose sands.







DATE :TEXT :



21 08 18.4 E28 32 51.4 S







0.90

0.00

1.70


Dry, beige to white speckled light grey, cemented NODULAR CALCRETEconsisting of partly coalesced nodules in a matrix of SILTY SAND toweakly cemented HARDPAN CALCRETE in zones: Pedogenic.Transitional to calcretizsd highly weathered to weathered granite withdepth.

Scale1:10

NOTES


2) No refusal.

3) No sample taken.

4) Sidewall collapse of loose sands. Profiled from surface due to sidewallcollapse.







DATE :TEXT :



21 08 13.7 E28 32 48.9 S







1.00

0.00

1.70


Light grey speckled white and beige and coated beige, highly to mediumweathered calcretised, partially friable, medium hard to hard rock,medium to coarse grained GRANITE with bands ofHARDPANCALCRETE: Keimoes Suite.Recovered as sandy gravel with angular cobbles and small boulders.

Scale1:10

NOTES












DATE :TEXT :



21 08 10.9 E28 32 53.1 S







0.60

0.00

1.20


White to beige speckled light grey, cemented to weakly cemented, weaklylaminated, HARDPAN CALCRETE with large zones of dry, orange brownmottled beige, loose, intact, fine GRAVEL with interstitial silty sand:Colluvium.Depth to hardpan varies 0.60 to 1.1m.

Scale1:10

NOTES



3) No sample taken.

4) Minor sidewall collapse in loose sands.







DATE :TEXT :



21 08 15.6 E28 32 55.6 S







0.25

0.00

0.60

Dry, orange brown, loose to very loose, intact with weakly developedpinhole structure, gritty SILTY SAND: Aeolian with gravel layer at base.Variable depth 0.25 to .40m.

White to beige, cemented to strongly cemented, weakly laminated,HARDPAN CALCRETE: Pedogenic.Calcretized medium weathered, medium hard to hard rock granite gneissobserved at base of excavation.

Scale1:10

NOTES


2) Refusal at 0.60m (variable 0.50-0.60m).

3) No sample taken.







DATE :TEXT :



21 08 20.3 E28 32 58.1 S







0.50

0.00

0.60

1.00


Dry orange brown mottled beige, loose, intact, fine GRAVEL and quartzcobbles in a SILTY SAND matrix: Colluvium.

Light grey speckled white and grey, highly weathered to mediumweathered with depth, massive, friable to marginally friable, medium tocoarse grained, very soft to soft rock GRANITE GNEISS: Keimoes Suite.Calcified in zones.Nodular to cemented hardpan ferricrete encountered above weatheredrock from 0.2 to 0.8m in a long section of pit.

Scale1:10

NOTES


2) Refusal at 1.00m (variable 0.80 to 1.00m) on medium hard rock.

3) No sample taken.







DATE :TEXT :



21 08 25.8 E28 33 01.0 S



0--1.30m





1.30

0.00

1.80


White speckled light grey and mottled orange to beige, highly to mediumweathered, massive, friable to marginally friable, calcretized in zones, softrock to medium hard rock GRANITE GNEISS: Keimoes Suite.Zones of HARDPAN CALCRETE near surface.

Scale1:10

NOTES











DATE :TEXT :



21 08 22.9 E28 33 05.2 S







0.80

0.00

1.90


White speckled light grey and mottled orange to beige, completely tohighly to medium weathered, massive, friable to marginally friable,calcretized in zones, soft rock to medium hard rock GRANITE GNEISS:Keimoes Suite.

Scale1:10

NOTES



3) No sample taken.








DATE :TEXT :



21 08 17.5 E28 33 02.3 S







0.70

0.00

1.20

2.00


White to beige, cemented to strongly cemented, HARDPAN CALCRETEwith minor interstitial silty sand: Pedogenic.Recovered as large boulders and cobbles of medium hard to hard rockhardnessORDry, orange brown, medium dense, medium to coarse grained granitegneiss GRAVEL in a SILTY SAND matrix: Reworked residual.

White to beige slightly orange brown, highly weathered to mediumweathered, closely fractured, massive, medium hard to hard rockGRANITE GNEISS: Keimoes SuiteRecovered as marginally friable medium hard to hard rock gravel withminor interstitial silty sand.

Scale1:10

NOTES



3) No sample taken.








DATE :TEXT :



21 08 12.8 E28 32 59.8 S



0.8--1.75m





0.70

0.00

0.80

1.75

Dry, orange brown, loose to very loose, intact with weakly developedpinhole structure, gritty SILTY SAND: Aeolian.

Dry, orange brown mottled beige, loose, intact, fine to medium GRAVELin a SILTY SAND matrix: Reworked residual.

Cream speckled light grey, highly to medium weathered, laminated andclosely to medium jointed, medium grained, medium hard rock: GRANITEGNEISS Keimoes Suite.Recovered as sandy gravel.Marginally friable.

Scale1:10

NOTES










DATE :TEXT :



21 08 08.0 E28 32 57.3 S







0.40

0.00

0.90

1.10


White to beige, weakly cemented to cemented, laminated HARDPANCALCRETE with zones of nodular calcrete: Pedogenic (weathered granitegneiss parent material)ANDZones of orange brown speckled beige, loose, intact, fine GRAVEL in asilty sand matrix: Reworked residual.

Light grey to beige speckled grey, highly weathered, calcretized, massive,medium grained, medium hard rock GRANITE GNEISS: Keimoes Suite.

Scale1:10

NOTES


2) Refusal at 1.1m on calcretized medium hard to hard rock granite gneiss.

3) No sample taken.







DATE :TEXT :



21 08 05.2 E28 33 01.4 S







0.80

0.00

2.20


Beige to light orange speckled white and grey, highly weathered,massive, friable to marginally friable, medium grained, soft to mediumhard rock, GRANITE GNEISS: Keimoes Suites.Minor bands of cemented calcrete.

Scale1:15

NOTES


2) No refusal.

3) No sample taken.

4) Sidewall collapse in loose sands and friable rock.







DATE :TEXT :



21 08 9.9 E28 33 03.9 S







0.70

0.00

1.60


White speckled cream and light grey and dark brown, highly weathered tomedium weathered with depth, massive, friable to marginally friable,coarse to very coarse grained GRANITE: Keimoes Suite.Calcareous in zones.

Scale1:10

NOTES


2) Refusal at 1.0m in section of test pit and very slow advance at base.

3) No sample taken.







DATE :TEXT :



21 08 14.7 E28 33 06.5 S







0.50

0.00

0.75

Dry, orange brown, loose to very loose, intact with weakly developedpinhole structure, gritty SILTY SAND: Aeolian.Containing hard rock calcrete boulders.Variable depth 0.40 to 0.70m.

White speckled grey and coated beige, medium to slightly weathered,massive, calcareous, medium grained, hard rock GRANITE: KeimoesSuite.With thin layers of cemented to strongly cemented HARDPANCALCRETE near upper surface of rock.

Scale1:10

NOTES



3) No sample taken.








DATE :TEXT :



21 08 20.1 E28 33 09.3 S





APPENDIX C: PHOTOGRAPHS



Photograph 1: Site 5 TP13

Photograph 2: Site 5 TP9 Note the variable depth to hardpan calcrete / thickness of aeolian sands

Aeolian sand

Weathered granite rock

Residual gravel

Hardpan calcrete