17th November 2009 Akron Roads Pty Ltd 5 Kendra Court Seaford Vic 3198 Attn.: Scott Anderson

RE: Somerfield Estate, Stage 1C 1. Introduction In accordance with AS3798-2007 “Guidelines for Earthworks for Commercial and Residential Development”, Terra Firma Laboratories have performed Level 1 supervision and testing works for filled areas associated with the Somerfield Estate Stage 1C. This work was conducted over the period of 20TH February 2009 to 1st April 2009. The supervision work involved both inspection of sub grade preparation work and full time inspection/testing of fill placement. 2. Fill materials The materials used as fill were locally sourced and generally consisted of Sandy Silty Clay, sourced from stockpiled materials on site. 3. Supervision and testing At all times during placement of fill materials Terra Firma Laboratories maintained a Geotechnical Technician on site to perform the supervision and testing as required by AS3798-2007. Prior to placement of fill materials, the sub grade area was proof-rolled to determine soft or otherwise unsuitable zones and such zones rectified as necessary. All fill was placed in layers of thicknesses not exceeding 300mm, with each layer tested using a nuclear density gauge. The results of which are reported in the testing appendix. 4. Conclusion Inspections and testing of the fill areas at this site indicate that both sub grade preparation and fill placement have been conducted in accordance with the specification and that the completed fill areas of greater than 300mm, as shown on the site plan attached and not any preceding the 20th February 2009 or work completed after the 1st April 2009 may be certified as being compliant with the specification.

   If you require further information, please contact the under signed. Yours Faithfully Terra Firma Laboratories,

Tom Seymour Lab Manager

  

LABORATORY TEST CERTIFICATES AND SITE PLAN  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 200 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 1 2 3location

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

72 72

19.00

1.96 -

11.5

standard

01.95

-

10.7

standard19.0

78.0-4.5

71.0

1.98 -

-3.5-3.5

74.5

Clay

101.0 104.0 106.0

19.0

1752.001.8110.3

0

72

Layer 1

standard

TS

5607-124/02/2009CK/AMPM20/02/2009

Layer 2175

2.041.8

Layer 3175

2.061.9

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 24 25 26location Lot #

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

1.9

Layer 3250

2.101.8

TS

5607-1001/04/2009NHAM26/03/2009

Layer 2250

2.16

19.0

2502.151.8516.2

0

Pit # 2 Lot #'s 74, 7574

Layer 1

standard

Sandy / Silty Clay

103.5 104.0 103.0

89.5-1.5

90.5

2.08 -

-1.5-1.0

93.5

19.00

2.08 -

13.3

standard

02.04

-

15.3

standard19.0

Pit # 2 Lot #'s 74, 7575

Pit # 2 Lot #'s 74, 7575

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 27 28location Lot #

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

1.8

TS

5607-1101/04/2009NHAM26/03/2009

Layer 5250

2.10

19.0

2502.121.8613.6

0

84

Layer 4

standard

Sandy / Silty Clay

102.0 102.0

90.5

2.07 -

-1.5-1.5

91.0

19.00

2.06 -

13.9

standard

85

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 29 30 31location

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

1.9

Layer 9250

2.131.9

TS

5607-1201/04/2009NHAM27/03/2009

Layer 8250

2.09

19.0

2502.091.8513.1

0

85

Layer 7

standard

Sandy / Silty Clay

101.0 99.0 100.5

88.0-0.5

95.5

2.07 -

-1.5-1.0

92.0

19.00

2.11 -

12.3

standard

02.12

-

14.2

standard19.0

84 85

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Trenchfill/Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 32 33 34 35location Lot #

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

88 67 67

2502.021.7

standard19.0

-0.5

19.00

2.12 -

19.00

2.11 -

15.2

standard

02.1

-

16.6

96.50.5

103.0 96.5

95.5

2.12 -

-0.5

Silty Sandy Clay

99.0 99.5 96.5

0.0

100.0

19.0

2502.101.8215.3

0

67

Layer 1

standard

TS

5607-1306/04/2009DBPM01/04/2009

Layer 2250

2.101.8

Layer 2250

2.021.7

15.7

standard

Layer 2

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 4 5location

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

1.8

TS

5607-224/02/2009AW12pm21/02/2009

Layer 4250

2.06

19.0

2502.081.8512.3

0

72

Layer 5

standard

Silty Clay

103.0 101.5

90.0

2.02 -

-1.5-3.0

81.5

19.00

2.03 -

15.3

standard

72

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

COMPACTION ASSESSMENTBY NUCLEAR GAUGE METHOD

Factory 3 / 20-26 Enterprise av Berwick 3806 report Noph 97695799 fax 97694799 date of issueClient Akron Roads Pty Ltd Feature Excavation Backfill tested byClient address 5 Kendra Court, Seaford timeProject Somerfield Estate Stage 1C Layer thickness (mm) 300 dateLocation Keysborough checked by

Field density test procedure AS1289.2.1.1 and 5.8.1Test No 21 22 23location Lot #

Sampling procedures AS1289.1.1,1.2.1depth from F.S.L. mmeasurement depth mmfield wet density t/m3

field dry density t/m3field moisture content %laboratory compaction procedure AS1289 5.7.1 compactive effortoversize material retained on AS sieve mmpercent of oversize material wetpeak converted wet density t/m3

adjusted peak converted wet density t/m3

moisture variation from OMC (-dry,+wet)%

Moisture ratio %

Hilf density ratio ( RHD ) %material description

Approved Signature

LABORATORY ACCREDITATION No 15357 T Seymour

1.7

Layer 3250

2.061.7

TS

5607-930/03/2009NHAM25/03/2009

Layer 2250

2.06

19.0

2502.051.7417.9

0

Pit # 1 - 85

Layer 1

standard

Sandy / Silty Clay

101.5 98.5 97.5

105.01.0

106.5

2.02 -

1.00.0

100.0

19.00

2.09 -

19.6

standard

02.11

-

19.5

standard19.0

Pit # 1 - 84 Pit # 1 - 85

The results of the tests, calibrations and/or measurements included in this document are traceable to Australian national standards of measurements. This document is issued in accordance with NATA's accreditation requirements.Accredited for compliance with ISO/IEC 17025

Version May 08

x Test 21

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x Test 24

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x Test 26

x Test 27

x Test 28

x Test 30

x Test 29

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x Test 32

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x Test 35

x Test 33

Akron Roads Pty LtdClient

Project Somerfield Estate Stage 1C

x Test 2

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