Contract No. HY/2013/12 Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works

AUES

4th Quarterly Environmental Monitoring and Audit Summary Report – (August to October 2015)

30Jan16

30Jan16

30Jan16

Measurement Result Action Level Limit Level

25 20 15 10 5 0

19Jan16

8Jan16

Measurement Result Action Level Limit Level

19Jan16

8Jan16

Measurement Result Action Level Limit Level

19Jan16

8Jan16 28Dec15

28Dec15

28Dec15

17Dec15

6Dec15

25Nov15

14Nov15

3Nov15

23Oct15 17Dec15

17Dec15

6Dec15

6Dec15

25Nov15

14Nov15

3Nov15 25Nov15

14Nov15

3Nov15

23Oct15

23Oct15

12Oct15

12Oct15

12Oct15

1Oct15

1Oct15

1Oct15

22.0

21.0

20.0

19.0

18.0

17.0

16.0

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

Unit Concentrattion (%)

Unit Concentrattion (%)

Unit Concentrattion (%)

Annotation: During 1 October 2015 to 31 January 2016, major construction activity was construction of retaining wall F and the specified works included excavation, rock breaking, blinding, formworking, steel-fixing and concreting. The weather condition varied from sunny to rainy. The monitoring data was provided by the Contractor followed to their QA/QC control.

Z:\Jobs\2014\TCS00715(HY-2013_12)\600\Quaterly EM&A Report\5th (Nov 15 to Jan 16)\R0172v2.docx

Contract No. HY/2013/12 Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works

AUES

4th Quarterly Environmental Monitoring and Audit Summary Report – (August to October 2015)

Measurement Result Action Level Limit Level

25 20 15 10 5 0

Unit Concentrattion (%)

30Jan16

30Jan16

30Jan16

19Jan16

8Jan16

Action Level Limit Level

19Jan16

8Jan16 19Jan16

8Jan16

Measurement Result Action Level Limit Level

1.6

1.4

1.2 1

0.8

0.6

0.4

0.2 0

28Dec15

28Dec15

28Dec15

17Dec15

6Dec15

25Nov15

14Nov15

3Nov15

23Oct15 17Dec15

6Dec15 17Dec15

6Dec15

25Nov15

25Nov15

Measurement Result

22 21 20 19 18 17 16

14Nov15

3Nov15

23Oct15 14Nov15

3Nov15

23Oct15

12Oct15

12Oct15

12Oct15

1Oct15

1Oct15

1Oct15

Unit Concentrattion (%)

Unit Concentrattion (%)

Annotation: During 1 October 2015 to 31 January 2016,, major construction activity was construction of retaining wall B and the specified works included excavation, rock breaking, blinding, formworking, steel-fixing and concreting. The weather condition varied from sunny to rainy. The monitoring data was provided by the Contractor followed to their QA/QC control.

Z:\Jobs\2014\TCS00715(HY-2013_12)\600\Quaterly EM&A Report\5th (Nov 15 to Jan 16)\R0172v2.docx