Landfill Gas Monitoring Results (Retaining Wall F) Landfill Gas Monitoring Results (Retaining Wall B)

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

AUES

13th Monthly Environmental Monitoring and Audit (EM&A) Report –November 2015

Unit Concentrattion (%)

Measurement Result Action Level Limit Level

25 20 15 10 5 0

Unit Concentrattion (%)

Unit Concentrattion (%)

22.0 Measurement Result Action Level Limit Level
21.0
20.0
19.0
18.0
17.0
16.0
1.6 Measurement Result Action Level Limit Level
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0

Annotation: During 1 August to 30 November 2015, 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\Monthly EM&A Report\November 2015\R0155v2.docx

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

AUES

13th Monthly Environmental Monitoring and Audit (EM&A) Report –November 2015

Unit Concentrattion (%)

Unit Concentrattion (%) Unit Concentrattion (%)

1.6

1.4

1.2

0.8

0.6

0.4

Measurement Result Action Level Limit Level

25 20 15 10 5 0

Measurement Result Action Level Limit Level 22 21 20 19 18 17 16

Measurement Result Action Level Limit Level

1

0.2 0

Annotation: During 1 August to 30 November 2015, 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\Monthly EM&A Report\November 2015\R0155v2.docx