SITE CLASSIFICATION SUMMARY STAGE 27A NORTHLAKES ESTATE CAMERON PARK

Transcription

1 Cardno (NSW/ACT) Pty td trading as Cardno Geotech Solutions ABN P.O Box 4224, Edgeworth 2285 Unit 4/5 Arunga r, Beresfield 2322 [P] [F] [E] Our ref: /0 26 October 2012 ccloy Group PO Box 2214 angar NSW 2309 Attention: r James Goode SITE CASSIFICATION SUARY STAGE 27A NORTHAKES ESTATE CAERON PARK Cardno Geotech Solutions (CGS) has undertaken investigation for the purpose of site classification associated with Stage 27A of the Northlakes Estate in Cameron Park as requested by r James Goode of ccloy Group. The preliminary site classifications provided herein; in accordance with Australian Standard , Residential Slabs and Footings are applicable to lots within Stage 27A in their existing condition at the time of fieldwork and in the absence of abnormal moisture condition. Reference should be made to CGS report reference /0 for full details of fieldwork, testing, and comment and recommendations which should be considered. Investigation was conducted on 5 October 2012 and comprised of excavation of eleven test pits (TP001-TP011). Five (5) shrink swell tests were conducted on samples obtained from the test pits, with results indicating a range of I ss values of 1.4% to 2.6%. Results of fieldwork, laboratory testing, and a drawing indicating the approximate test pit locations along with a fill depth contour plan are attached. It is noted that filling was encountered across portions the site, to depths of greater than 2m as indicated on the attached fill depth contour plan and engineering logs. The filling was conducted utilising materials won from on site and adjacent stages and is generally limited to lots , and a small portion of the rear of lots

2 Page 2 As specified in AS Clause 2.5.3, the classification of sites with controlled fill of depths greater than 0.4m (deep fill) comprising of material other than sand would be Class P. An alternative classification may be given to the site where consideration is made to the potential for movement of the fill and underlying soil based on the condition at the time of construction and the long term equilibrium moisture conditions. The preliminary site classifications for ots within Stage 27A as defined in AS and based on subsurface profiles encountered in the fieldwork are presented below in Table 1. The lots with controlled filling have been re-classified and the classifications below are based on the assumption that all footings are founded below any topsoil in controlled fill or the natural soil profile. Table 1 Expected site classifications ot Numbers (inclusive) Site Classification (1) Class H1 Highly Reactive Class oderately Reactive 2712 (1) Class H1 Highly Reactive Class oderately Reactive (2) Class H2 Highly Reactive Notes: (1) ots are classified as Class P due to the presence of filling (>0.4m in depth) with reclassification conducted with consideration to controlled fill (limited to a portion of the lots). A classification of Class could be adopted where founding in the natural profile underlying the fill. (2) ots are classified as Class P due to the presence of filling (>0.4m in depth) with reclassification conducted with consideration to controlled fill. It is noted that shallow rock was encountered across several lots at the site and where uniformly founding in competent rock, a classification of Class A could be adopted. This would require confirmation of the founding conditions by an experienced structural engineer or geotechnical consultant. A classification of Class has been recommended due to the variable depth to rock encountered across the site. It should also be noted that variable depth of topsoil was encountered, up to 0.45m which would require removal prior to the development. Furthermore; at the time of fieldwork, several stockpiles of soil, organic matter along with a compound area for storage of machinery still burdened a number of lots. The site classifications above are based on the assumption of validation of removal of the stockpiles and remnants from the compound area. If site re-grading works involving cutting or filling are performed after the date of fieldwork, the classifications may change and further advice should be sought. The effects of changes to the soil profile by additional cutting and filling and the effects of past and future tree removal should be considered in selection of the design value for differential movement. ccloy Group Site Classification Summary Stage 27A Northlakes Estate, Cameron Park CGS Ref: /0, October 2012 Cardno Geotech Solutions

3 Page 3 All structural footings (including edge beams, internal beams and load support thickenings) on the above allotments should be founded as follows: In stiff or better natural clayey soils, rock or on controlled fill beneath all topsoil, uncontrolled fill, and deleterious material; and Outside of or below all zones of influence resulting from existing or future service trenches or test pits. All footings should be designed and constructed in accordance with the requirements of AS Adequate surface and stormwater drainage should be installed and maintained on each building site. The classifications presented above is provided on the basis that the performance expectations set out in Appendix B of AS are acceptable and that site maintenance is in accordance with the provisions of CSIRO Sheet BTF 18, Foundation aintenance and Footing Performance: A Homeowner s Guide. Yours faithfully, Cardno Geotech Solutions Zac Othman Geotechnical Engineer James Young irector Attachments: rawings Engineering ogs Explanatory Notes aboratory Testing ccloy Group Site Classification Summary Stage 27A Northlakes Estate, Cameron Park CGS Ref: /0, October 2012 Cardno Geotech Solutions

4 SITE N TP008 TP007 TP009 TP010 TP011 TP006 TP005 TP004 TP002 TP003 TP001 NOTES: rawing adapted from ccloy Group Sale Plan For Northlakes Estate Stage 27A, reference STG 27A Sales Plan, dated 18 ay 2012 EGEN: Approximate test pit locations and numbers TEST PIT OCATION PAN Unit 4, 5 Arunga CIENT: ccloy Group rive, Beresfield SITE CASSIFICATION STAGE 27A PROJECT REFERENCE: CGS1483 NSW 2322 RAWING NUBER: NORTHAKES ESTATE, CAERON PARK RAWN BY: A APPROVE BY: ZO ATE: 12 October 2012 SCAE: NTS OFFICE: Beresfield

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6 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP001 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey SAN, fine to coarse grained, pale grey, with oragnics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations m Not Encountered 0.50m U m 0.5 Sandy Silty CAY, medium plasticity, pale orange-brown VSt - H 12 >25 R 0.95m 1.0 SANSTONE, fine to coarse grained, pale orange m Testpit TP001 terminated at 1.25 m Refusal GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP001 Page 1 OF 1

7 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP002 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components 0.05m TOPSOI, Clayey SAN, fine to coarse grained, pale grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations Sandy Silty CAY, low to medium plasticity, grey-orange 4 Not Encountered St - H m Testpit TP002 terminated at 0.55 m R Refusal on sandstone 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP002 Page 1 OF 1

8 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP003 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey SAN, fine to coarse grained, pale grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations > m Sandy Silty CAY, medium plasticity, pale orange mottled grey, trace organics 10 Not Encountered 0.5 VSt 6 16 R 0.65m Sandy CAY, low to medium plasticity, mottled pale grey and orange, with siltstone lenses and sandstone fragments C < P H m Testpit TP003 terminated at 1.00 m Refusal on sandstone GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP003 Page 1 OF 1

9 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP004 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components FI, Sandy CAY, medium plasticity, mottled grey and brown-orange, with gravel and cobble size siltstone/sandstone fragments OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) 7 HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations C > P 6 Not Encountered m SANSTONE, fine to coarse grained, orange and grey 14 R m Testpit TP004 terminated at 0.95 m Refusal GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP004 Page 1 OF 1

10 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP005 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components FI, Sandy CAY, medium plasticity, brown-orange mottled grey, with gravel and cobble size siltstone/sandstone fragments OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations 0.50m m Not Encountered 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. 1.80m Testpit TP005 terminated at 1.80 m Target depth SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP005 Page 1 OF 1

11 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP006 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components FI, Sandy CAY, medium plasticity, dark brown-orange, with gravel and cobble size sandstone fragments OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations 0.5 Not Encountered m GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : m WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. 2.00m Testpit TP006 terminated at 2.00 m Target depth SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP006 Page 1 OF 1

12 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP007 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey Silty SAN, fine to coarse grained, grey, trace organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations Not Encountered 0.30m U m Sandy CAY, medium plasticity, grey mottled orange-brown, with silt m 0.5 C > P St 6 > m R 0.75m SANSTONE, fine to coarse grained, orange and grey Testpit TP007 terminated at 0.75 m Refusal 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP007 Page 1 OF 1

13 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP008 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey Silty SAN, fine to coarse grained, brown mottled dark grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) 9 HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations 0.25m 7 Not Encountered Sandy CAY, medium plasticity, brown mottled pale orange, with silt, with indurated sandstone fragments VSt >25 R 0.60m SANSTONE, fine to medium grained, pale orange V m Testpit TP008 terminated at 0.80 m Refusal 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP008 Page 1 OF 1

14 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP009 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey Silty SAN, fine to coarse grained, dark grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) 7 HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations 0.20m Sandy Silty CAY, medium plasticity, pale grey mottled orange m Not Encountered U St m as above but with sandstone fragments VSt - H 25 R m Testpit TP009 terminated at 1.00 m Refusal on sandstone GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP009 Page 1 OF 1

15 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP010 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Clayey Silty SAN, fine to coarse grained, dark grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) 10 HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations Not Encountered 0.30m Sandy Silty CAY, medium plasticity, dark grey, trace organics 9 5 St m as above but with sandstone fragments 15 R Testpit TP010 terminated at 0.55 m Refusal on sandstone 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP010 Page 1 OF 1

16 CIENT : ccloy Group Pty td PROJECT : Site Classification OCATION : Stage 27A: Northlakes Estate, Cameron Park EQUIPENT TYPE : 5t Excavator ATE EXCAVATE : 05/10/12 OCATION : See drawing for approximate location TESTPIT OG ETHO : 450mm toothed bucket OGGE BY : S HOE NO : TP011 PROJECT REF : CGS1483 SHEET : 1 OF 1 CHECKE BY : GROUN WATER EVES SAPES & FIE TESTS EPTH (m) 0.0 GRAPHIC OG CASSIFICATION SYBO ATERIA ESCRIPTION Soil Type, plasticity or particle characteristic, colour Rock Type, grain size, colour Secondary and minor components TOPSOI, Silty Clayey SAN, fine to medium grained, dark grey, with organics OISTURE / WEATHERING CONSISTENCY / RE ENSITY / CP (BOW COUNT) 6 HAN PENETRO- ETER (kpa) STRUCTURE & Other Observations 4 Not Encountered 0.35m U m Sandy Silty CAY, medium plasticity, pale orange grey, trace organics m VSt - H as above but with sandstone fragments > m Testpit TP011 terminated at 0.80 m Refusal on sandstone >25 R 1.0 GEOTECH_SOUTIONS_03 IBRARY.GB og CGS_TESTHOE_OG_02 CGS_1483_STAGE_27_A_NORTHAKES.GPJ 26/10/ : WATER / OISTURE - ry - oist W - Wet OC - Optimum C P - Plastic imit Water inflow See Explanatory Notes for details of abbreviations & basis of descriptions. SAPES & FIE TESTS U ES B HP - Undisturbed Sample - isturbed Sample - Environmental sample - Bulk isturbed Sample - Standard Penetration Test - Hand/Pocket Penetrometer CONSISTENCY VS - Very Soft S - Soft F - Firm St - Stiff VSt - Very Stiff H - Hard REATIVE ENSITY V - Very oose - oose - edium ense - ense V - Very ense CARNO GEOTECH SOUTIONS E V H VH EH - Extremely low - Very low - ow - edium - High - Very high - Extremely high ROCK WEATHERING RS W SW FR - Residual soil - Extremely weathered - istinctly weathered - Slightly weathered - Fresh rock File: CGS1483 TP011 Page 1 OF 1

17 Explanatory Notes The methods of description and classification of soils and rocks used in this report are based on Australian Standard 1726 Geotechnical Site Investigations Code. aterial descriptions are deduced from field observation or engineering examination, and may be appended or confirmed by in situ or laboratory testing. The information is dependent on the scope of investigation, the extent of sampling and testing, and the inherent variability of the conditions encountered. Subsurface investigation may be conducted by one or a combination of the following methods. ethod Test Pitting: excavation/trench BH Backhoe bucket EX X Excavator bucket Existing excavation Natural Exposure: existing natural rock or soil exposure anual drilling: hand operated tools HA Hand Auger Continuous sample drilling PT Hammer drilling AH AT Spiral flight auger drilling AS A/V A/T Rotary non-core drilling WS RR Rotary core drilling HQ NC NQ Concrete coring T Push tube Air hammer Air track arge diameter short spiral auger Continuous spiral flight auger: V-Bit Continuous spiral flight auger: TC-Bit Washbore (mud drilling) Rock roller 63mm diamond-tipped core barrel 52mm diamond-tipped core barrel 47mm diamond-tipped core barrel iatube Sampling is conducted to facilitate further assessment of selected materials encountered. Sampling method isturbed sampling B ES Undisturbed sampling Bulk disturbed sample isturbed sample Environmental soil sample Standard Penetration Test sample U# Undisturbed tube sample (#mm diameter) Water samples EW Environmental water sample Field testing may be conducted as a means of assessment of the in-situ conditions of materials encountered. Field testing HP/PP Standard Penetration Test (blows/150mm) Hand/Pocket Penetrometer ynamic Penetrometers (blows/150mm) VS PBT CP PSP Vane Shear ynamic Cone Penetrometer Perth Sand Penetrometer Plate Bearing Test If encountered with or dynamic penetrometer testing, refusal (R), virtual refusal (VR) or hammer bouncing (HB) may be noted. The quality of the rock can be assessed be the degree of fracturing and the following. Rock quality description TCR Total Core Recovery (%) (length of core recovered divided by the length of core run) RQ Rock Quality esignation (%) (sum of axial lengths of core greater than 100mm long divided by the length of core run) Notes on groundwater conditions encountered may include. Groundwater Not Encountered Excavation is dry in the short term Not Observed Seepage Inflow Groundwater observation not possible Groundwater seeping into hole Groundwater flowing/flooding into hole Perched groundwater may result in a misleading indication of the depth to the true water table. Groundwater levels are likely to fluctuate with variations in climatic and site conditions. Notes on the stability of excavations may include. Excavation conditions Spalling Unstable aterial falling into excavation, may be described as minor or major spalling Collapse of the majority, or one or more face, of the excavation

18 Explanatory Notes - General Soil escription The methods of description and classification of soils used in this report are based on Australian Standard 1726 Geotechnical Site Investigations Code. In practice, if the material can be remoulded by hand in its field condition or in water it is described as a soil. The dominant soil constituent is given in capital letters, with secondary textures in lower case. In general, descriptions cover: soil type, strength / relative density, moisture, colour, plasticity and inclusions. Soil types are described according to the dominant particle size on the basis of the following assessment. Soil Classification CAY SIT Particle Size < 0.002mm 0.002mm 0.075mm SAN fine 0.075mm to 0.2mm medium coarse 0.2mm to 0.6mm 0.6mm to 2.36mm GRAVE fine 2.36mm to 6mm COBBES BOUERS medium coarse 6mm to 20mm 20mm to 63mm 63mm to 200mm > 200mm Soil types are qualified by the presence of minor components on the basis of field examination or grading. escription Trace With Percentage of minor component < 5% in coarse grained soils < 15% in fine grained soils 5% to 12% in coarse grained soils 15% to 30% in fine grained soils The strength of cohesive soils is classified by engineering assessment or field/laboratory testing as follows. Strength Symbol Undrained shear strength Very Soft VS < 12kPa Soft S 12kPa to 25kPa Firm F 25kPa to 50kPa Stiff St 50kPa to 100kPa Very Stiff VSt 100kPa to 200kPa Hard H > 200kPa Cohesionless soils are classified on the basis of relative density as follows. Relative ensity Symbol ensity Index Very oose V < 15% oose 15% to 35% edium ense 35% to 65% ense 65% to 85% Very ense V > 85% The moisture condition of soil is described by appearance and feel and may be described in relation to the Plastic imit (P) or Optimum oisture Content (OC). oisture condition and description ry oist Wet Cohesive soils; hard, friable, dry of plastic limit. Granular soils; cohesionless and free-running Cool feel and darkened colour: Cohesive soils can be moulded. Granular soils tend to cohere Cool feel and darkened colour: Cohesive soils usually weakened and free water forms when handling. Granular soils tend to cohere The plasticity of cohesive soils is defined as follows. Plasticity iquid imit ow plasticity 35% edium plasticity > 35% 50% High plasticity > 50% The structure of the soil may be described as follows. Zoning ayer ens Pocket escription Continuous across exposure or sample iscontinuous layer (lenticular shape) Irregular inclusion of different material The structure may include; defects such as softened zones, fissures, cracks, joints and root-holes; and coarse grained soils may be described as strongly or weakly cemented. The soil origin may also be noted if possible to deduce. Soil origin and description Fill Topsoil Colluvial soil Aeolian soil Alluvial soil acustrine soil arine soil Residual soil an-made deposits or disturbed material aterial affected by roots and root fibres Transported down slopes by gravity Transported and deposited by wind eposited by rivers eposited by lakes eposits in beaches, bays, estuaries eveloped on weathered rock The origin of the soil generally cannot be deduced on the appearance of the material and may be assumed based on further geological evidence or field observation.

19 Explanatory Notes - General Rock escription The methods of description and classification of rocks used in this report are based on Australian Standard 1726 Geotechnical Site Investigations Code. In general, if a material cannot be remoulded by hand in its field condition or in water it is described as a rock, is classified by its geological terms. In general, descriptions cover: rock type, degree of weathering, strength, colour, grain size, structure and minor components or inclusions. Sedimentary rock types are generally described according to the predominant grain size as follows. Rock Type CONGOERATE SANSTONE SITSTONE SHAE CAYSTONE escription Rounded gravel sized fragments >2mm cemented in a finer matrix Sand size particles defined by grain size and often cemented by other materials fine 0.06mm to 0.2mm medium 0.2mm to 0.6mm coarse 0.6mm to 2mm Predominately silt sized particles Fine particles (silt or clay) and fissile Predominately clay sized particles The classification of rock weathering is described based on definitions outlined in AS1726 as follows. Term and symbol Residual Soil Extremely weathered istinctly weathered RS W Slightly SW weathered Fresh Rock FR efinition Soil developed on extremely weathered rock; mass structure and substance are no longer evident Weathered to such an extent that it has soil properties Strength usually changed and may be highly discoloured. Porosity may be increased by leaching, or decreased due to deposition in pores Slightly discoloured; little/no change of strength from fresh rock Rock shows no sign of decomposition or staining Rock material strength (distinct from mass strength which can be significantly weaker due to the effect of defects) can be defined based on the point load index as follows. Term and symbol Extremely low E < 0.03Pa Point oad Index I s50 Very ow V 0.03Pa to 0.1Pa ow 0.1Pa to 0.3Pa edium 0.3Pa to 1Pa High H 1Pa to 3Pa Very High VH 3Pa to 10Pa Extremely High EH > 10Pa For preliminary assessment and in cases where no point load testing is available, the rock strength may be assessed using the field guide specified by AS1726. The defect spacing and bedding thickness of rocks, measured normal to defects of the same set or bedding, can be described as follows. efinition Thinly laminated aminated Very thinly bedded efect Spacing < 6mm 6mm to 20mm 20mm to 60mm Thinly bedded 60mm to 0.2m edium bedded 0.2m to 0.6m Thickly bedded Very thickly bedded 0.6m to 2m > 2m efects in rock mass are often described by the following. Terms Joint JT Sheared zone SZ Bed Parting BP Sheared surface SS Contact CO Seam S yke K Crushed Seam CS ecomposed Zone Z Infilled Seam IS Fracture FC Foliation F Fracture Zone FZ Vein VN The shape and roughness of defects are described using the following terms. Planarity Roughness Planar PR Very Rough VR Curved CU Rough RF Undulating U Smooth S Irregular IR Polished PO Stepped ST Slickensides S The coating or infill associated with defects can be described as follows. efinition Clean Stain Veneer Coating escription No visible coating or infilling No visible coating or infilling; surfaces discoloured by mineral staining Visible coating or infilling of soil or mineral substance (<1mm). If discontinuous over the plane; patchy veneer Visible coating or infilling of soil or mineral substance (>1mm)

20 Graphics Symbols Index CAYS GRAVES SEIENTARY ROCK CAY GRAVE CONGOERATE Silty CAY Clayey GRAVE BRECCIA Sandy CAY Silty GRAVE SANSTONE Gravelly CAY Sandy GRAVE SITSTONE SITS Organic SIT COBBES & BOUERS SHAE USTONE / CAYSTONE SIT Clayey SIT ISCEANEOUS FI COA ETAORPHIC ROCK Sandy SIT TOPSOI SATE / PHYITE / SCHIST Gravelly SIT CONCRETE GNEISS SANS ASPHAT QUARTZITE SAN CORE OSS IGNEOUS ROCK Clayey SAN PAVEENT GRAVE GRANITE Silty SAN PAVEENT (Natural Gravels) BASAT Gravelly SAN PAVEENT (Crushed Rock) TUFF

21 Shrink Swell Index Report Client: ccloy Group Pty td Report Number: CGS/ Client Address: PO Box 2214 angar NSW 2309 Page 1 of 5 Job Number: CGS/1483 Report ate: 23/10/2012 Project: Stage 27A Order Number: ocation Northlakes Estate, Cameron Park Test ethod : AS ab No: 12/7728 Sample ocation ate Sampled: 5/10/2012 Pit No. TP005 ate Tested: 19/10/2012 Sample Type Sampled By: imce Stojanovski Sample epth m Sample ethod: AS c6.5.4 Backhoe aterial Source: Insitu For Use As: - ot Number: - Remarks: - Item Number : - Swell (%) : Shrinkage oisture Content (%) : Page 1 of 5 Swell C Before(%): 18.9 Shrinkage (%) : 4.2 Swell C After(%) : 18.4 Unit Weight (t/m³) : 2.04 PP Before (kpa): 200 Shrink Swell Index (Iss %): 0.0 PP After (kpa): Visual Classification : FI Sandy CAY P brown orange grey Inert aterial Estimate(%): 5 Cracking : ild Crumbling : nil This document is issued in accordance with NATA's accreditation requirements. Accredited for compliance with ISO/IEC The results of the tests, calibrations and/or measurements included in this document are traceable to Australian/national standards. APPROVE SIGNATORY James Young FOR NUBER RP106-2 NATA Accred No:15689

22 Shrink Swell Index Report Client: ccloy Group Pty td Report Number: CGS/ Client Address: PO Box 2214 angar NSW 2309 Page 2 of 5 Job Number: CGS/1483 Report ate: 23/10/2012 Project: Stage 27A Order Number: ocation Northlakes Estate, Cameron Park Test ethod : AS ab No: 12/7729 Sample ocation ate Sampled: 5/10/2012 Pit No. TP006 ate Tested: 17/10/2012 Sample Type Sampled By: imce Stojanovski Sample epth m Sample ethod: AS c6.5.4 Backhoe aterial Source: Insitu For Use As: - ot Number: - Remarks: - Item Number : - Swell (%) : Shrinkage oisture Content (%) : Page 2 of 5 Swell C Before(%): 18.5 Shrinkage (%) : 2.6 Swell C After(%) : 20.7 Unit Weight (t/m³) : 2 PP Before (kpa): 275 Shrink Swell Index (Iss %): 0.1 PP After (kpa): Visual Classification : FI Sandy CAY P dark brown orange Inert aterial Estimate(%): 5 Cracking : oderate Crumbling : nil This document is issued in accordance with NATA's accreditation requirements. Accredited for compliance with ISO/IEC The results of the tests, calibrations and/or measurements included in this document are traceable to Australian/national standards. APPROVE SIGNATORY James Young FOR NUBER RP106-2 NATA Accred No:15689

23 Shrink Swell Index Report Client: ccloy Group Pty td Report Number: CGS/ Client Address: PO Box 2214 angar NSW 2309 Page 3 of 5 Job Number: CGS/1483 Report ate: 23/10/2012 Project: Stage 27A Order Number: ocation Northlakes Estate, Cameron Park Test ethod : AS ab No: 12/7730 Sample ocation ate Sampled: 5/10/2012 Pit No. TP007 ate Tested: 17/10/2012 Sample Type U50 Sampled By: imce Stojanovski Sample epth m Sample ethod: AS c6.5.4 Backhoe aterial Source: Insitu For Use As: - ot Number: - Remarks: - Item Number : - Page 3 of 5 Shrinkage oisture Content (%) : Swell C Before(%): 26.2 Shrinkage (%) : 2.5 Swell C After(%) : 27.4 Unit Weight (t/m³) : 1.93 PP Before (kpa): 230 Swell (%) : Shrink Swell Index (Iss %): 0.1 PP After (kpa): Visual Classification : Sandy CAY P grey orange brown Inert aterial Estimate(%): 5 Cracking : ild Crumbling : nil This document is issued in accordance with NATA's accreditation requirements. Accredited for compliance with ISO/IEC The results of the tests, calibrations and/or measurements included in this document are traceable to Australian/national standards. APPROVE SIGNATORY James Young FOR NUBER RP106-2 NATA Accred No:15689

24 Shrink Swell Index Report Client: ccloy Group Pty td Report Number: CGS/ Client Address: PO Box 2214 angar NSW 2309 Page 4 of 5 Job Number: CGS/1483 Report ate: 23/10/2012 Project: Stage 27A Order Number: ocation Northlakes Estate, Cameron Park Test ethod : AS ab No: 12/7731 Sample ocation ate Sampled: 5/10/2012 Pit No. TP009 ate Tested: 19/10/2012 Sample Type U50 Sampled By: imce Stojanovski Sample epth m Sample ethod: AS c6.5.4 Backhoe aterial Source: Insitu For Use As: - ot Number: - Remarks: - Item Number : - Swell (%) : Shrinkage oisture Content (%) : Page 4 of 5 Swell C Before(%): 17.2 Shrinkage (%) : 3.7 Swell C After(%) : 20.5 Unit Weight (t/m³) : 1.9 PP Before (kpa): 540 Shrink Swell Index (Iss %): Visual Classification : Silty Sandy CAY P pale orange Inert aterial Estimate(%): 5 Cracking : Nil Crumbling : nil 0.6 PP After (kpa): This document is issued in accordance with NATA's accreditation requirements. Accredited for compliance with ISO/IEC The results of the tests, calibrations and/or measurements included in this document are traceable to Australian/national standards. APPROVE SIGNATORY James Young FOR NUBER RP106-2 NATA Accred No:15689

25 Shrink Swell Index Report Client: ccloy Group Pty td Report Number: CGS/ Client Address: PO Box 2214 angar NSW 2309 Page 5 of 5 Job Number: CGS/1483 Report ate: 23/10/2012 Project: Stage 27A Order Number: ocation Northlakes Estate, Cameron Park Test ethod : AS ab No: 12/7732 Sample ocation ate Sampled: 5/10/2012 Pit No. TP011 ate Tested: 19/10/2012 Sample Type U50 Sampled By: imce Stojanovski Sample epth m Sample ethod: AS c6.5.4 Backhoe aterial Source: Insitu For Use As: - ot Number: - Remarks: - Item Number : - Swell (%) : Shrinkage oisture Content (%) : Page 5 of 5 Swell C Before(%): 18.8 Shrinkage (%) : 4.0 Swell C After(%) : 21.3 Unit Weight (t/m³) : 1.87 PP Before (kpa): 360 Shrink Swell Index (Iss %): 1.2 PP After (kpa): Visual Classification : Silty Sandy CAY P pale orange grey Inert aterial Estimate(%): 5 Cracking : Nil Crumbling : nil This document is issued in accordance with NATA's accreditation requirements. Accredited for compliance with ISO/IEC The results of the tests, calibrations and/or measurements included in this document are traceable to Australian/national standards. APPROVE SIGNATORY James Young FOR NUBER RP106-2 NATA Accred No:15689