Landfill Gas Monitoring Results (Retaining Wall F)

Monitoring Location Date Time Weather Temperature (°C) Methane (%) Oxygen (%) Carbon Dioxide (%)
Measurement Result Action Level Limit Level Measurement Result Action Level Limit Level Measurement Result Action Level Limit Level
Retaining Wall F 1/6/2015 8:00 Cloudy 28 0 10 20 21.1 19 18 0 0.5 1.5
1/6/2015 14:00 31 0.1 10 20 21.1 19 18 0.2 0.5 1.5
2/6/2015 8:00 Rain 29 0.1 10 20 21.1 19 18 0.1 0.5 1.5
2/6/2015 14:00 32 0.1 10 20 21.1 19 18 0 0.5 1.5
3/6/2015 8:00 Sunny 29 0.1 10 20 21.1 19 18 0.1 0.5 1.5
3/6/2015 14:00 33 0.1 10 20 21.1 19 18 0.2 0.5 1.5
4/6/2015 8:00 Cloudy 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
4/6/2015 14:00 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
5/6/2015 8:00 Fine 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
5/6/2015 14:00 31 0.1 10 20 21.1 19 18 0.1 0.5 1.5
6/6/2015 8:00 Fine 27 0.1 10 20 21.1 19 18 0 0.5 1.5
6/6/2015 14:00 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
8/6/2015 8:00 Cloudy 27 0.1 10 20 21.1 19 18 0.1 0.5 1.5
8/6/2015 14:00 32 0 10 20 21.1 19 18 0.1 0.5 1.5
9/6/2015 8:00 Cloudy 26 0.1 10 20 21.1 19 18 0.2 0.5 1.5
9/6/2015 14:00 31 0.1 10 20 21.1 19 18 0.1 0.5 1.5
10/6/2015 8:00 Rain 27 0.1 10 20 21.1 19 18 0 0.5 1.5
10/6/2015 14:00 30 0.1 10 20 21.1 19 18 0.1 0.5 1.5
11/6/2015 8:00 Cloudy 27 0 10 20 21.1 19 18 0.2 0.5 1.5
11/6/2015 14:00 32 0.1 10 20 21.1 19 18 0 0.5 1.5
12/6/2015 8:00 Rain 26 0 10 20 21.1 19 18 0.2 0.5 1.5
12/6/2015 14:00 30 0 10 20 21.1 19 18 0 0.5 1.5
13/6/2015 8:00 Hazy 29 0 10 20 21.1 19 18 0 0.5 1.5
13/6/2015 14:00 32 0 10 20 21.1 19 18 0.1 0.5 1.5
15/6/2015 8:00 Sunny 27 0.1 10 20 21.1 19 18 0 0.5 1.5
15/6/2015 14:00 33 0 10 20 21.1 19 18 0.1 0.5 1.5
16/6/2015 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
16/6/2015 14:00 32 0.1 10 20 21.1 19 18 0 0.5 1.5
17/6/2015 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
17/6/2015 14:00 32 0 10 20 21.1 19 18 0 0.5 1.5
18/6/2015 8:00 Fine 27 0.1 10 20 21.1 19 18 0.1 0.5 1.5
18/6/2015 14:00 32 0.1 10 20 21.1 19 18 0 0.5 1.5
19/6/2015 8:00 Sunny 28 0.1 10 20 21.1 19 18 0 0.5 1.5
19/6/2015 14:00 33 0.1 10 20 21.1 19 18 0.2 0.5 1.5
22/6/2015 8:00 Rain 26 0 10 20 21.1 19 18 0.1 0.5 1.5
22/6/2015 14:00 31 0.1 10 20 21.1 19 18 0 0.5 1.5
23/6/2015 8:00 Rain 27 0.1 10 20 21.1 19 18 0 0.5 1.5
23/6/2015 14:00 31 0 10 20 21.1 19 18 0.1 0.5 1.5
24/6/2015 8:00 Rain 27 0.1 10 20 21.1 19 18 0.1 0.5 1.5
24/6/2015 14:00 32 0.1 10 20 21.1 19 18 0 0.5 1.5
25/6/2015 8:00 Rain 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
25/6/2015 14:00 31 0.1 10 20 21.1 19 18 0 0.5 1.5
26/6/2015 8:00 Rain 28 0 10 20 21.1 19 18 0.2 0.5 1.5
26/6/2015 14:00 31 0 10 20 21.1 19 18 0 0.5 1.5
27/6/2015 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
27/6/2015 14:00 32 0 10 20 21.1 19 18 0.1 0.5 1.5
29/6/2015 8:00 Sunny 28 0 10 20 21.1 19 18 0 0.5 1.5
29/6/2015 14:00 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
30/6/2015 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
30/6/2015 14:00 33 0 10 20 21.1 19 18 0.1 0.5 1.5

Remark:

Parameter Criteria Measurement
Oxygen Action Level < 19%
Limit Level < 18%
Methane Action Level > 10% LEL (> 0.5% v/v)
Limit Level > 20% LEL (>1% v/v)
Carbon Action Level > 0.5%
Dioxide Limit Level > 1.5%

Landfill Gas Monitoring Results (Retaining Wall B)

Monitoring Location Date Time Weather Temperature (°C) Methane (%) Oxygen (%) Carbon Dioxide (%)
Measurement Result Action Level Limit Level Measurement Result Action Level Limit Level Measurement Result Action Level Limit Level
Retaining Wall B 1/6/2015 8:20 Cloudy 28 0 10 20 21.1 19 18 0.2 0.5 1.5
1/6/2015 14:20 31 0.1 10 20 21.1 19 18 0 0.5 1.5
2/6/2015 8:20 Rain 29 0.1 10 20 21.1 19 18 0 0.5 1.5
2/6/2015 14:20 32 0 10 20 21.1 19 18 0.1 0.5 1.5
3/6/2015 8:20 Sunny 29 0.1 10 20 21.1 19 18 0.1 0.5 1.5
3/6/2015 14:20 33 0 10 20 21.1 19 18 0.2 0.5 1.5
4/6/2015 8:20 Cloudy 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
4/6/2015 14:20 32 0 10 20 21.1 19 18 0 0.5 1.5
5/6/2015 8:20 Fine 28 0 10 20 21.1 19 18 0.1 0.5 1.5
5/6/2015 14:20 31 0.1 10 20 21.1 19 18 0.2 0.5 1.5
6/6/2015 8:20 Fine 27 0.1 10 20 21.1 19 18 0 0.5 1.5
6/6/2015 14:20 32 0.1 10 20 21.1 19 18 0.2 0.5 1.5
8/6/2015 8:20 Cloudy 27 0.1 10 20 21.1 19 18 0 0.5 1.5
8/6/2015 14:20 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
9/6/2015 8:20 Cloudy 26 0 10 20 21.1 19 18 0 0.5 1.5
9/6/2015 14:20 31 0.1 10 20 21.1 19 18 0.1 0.5 1.5
10/6/2015 8:20 Rain 27 0 10 20 21.1 19 18 0 0.5 1.5
10/6/2015 14:20 30 0 10 20 21.1 19 18 0.1 0.5 1.5
11/6/2015 8:20 Cloudy 27 0.1 10 20 21.1 19 18 0.2 0.5 1.5
11/6/2015 14:20 32 0.1 10 20 21.1 19 18 0 0.5 1.5
12/6/2015 8:20 Rain 26 0 10 20 21.1 19 18 0 0.5 1.5
12/6/2015 14:20 30 0.1 10 20 21.1 19 18 0 0.5 1.5
13/6/2015 8:20 Hazy 29 0 10 20 21.1 19 18 0.2 0.5 1.5
13/6/2015 14:20 32 0.1 10 20 21.1 19 18 0 0.5 1.5
15/6/2015 8:20 Sunny 27 0.1 10 20 21.1 19 18 0 0.5 1.5
15/6/2015 14:20 33 0 10 20 21.1 19 18 0.2 0.5 1.5
16/6/2015 8:20 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
16/6/2015 14:20 32 0.1 10 20 21.1 19 18 0 0.5 1.5
17/6/2015 8:20 Sunny 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
17/6/2015 14:20 32 0.1 10 20 21.1 19 18 0 0.5 1.5
18/6/2015 8:20 Fine 27 0.1 10 20 21.1 19 18 0 0.5 1.5
18/6/2015 14:20 32 0 10 20 21.1 19 18 0.1 0.5 1.5
19/6/2015 8:20 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
19/6/2015 14:20 33 0 10 20 21.1 19 18 0.1 0.5 1.5
22/6/2015 8:20 Rain 26 0.1 10 20 21.1 19 18 0 0.5 1.5
22/6/2015 14:20 31 0.1 10 20 21.1 19 18 0.1 0.5 1.5
23/6/2015 8:20 Rain 27 0 10 20 21.1 19 18 0 0.5 1.5
23/6/2015 14:20 31 0.1 10 20 21.1 19 18 0.2 0.5 1.5
24/6/2015 8:20 Rain 27 0.1 10 20 21.1 19 18 0 0.5 1.5
24/6/2015 14:20 32 0 10 20 21.1 19 18 0.1 0.5 1.5
25/6/2015 8:20 Rain 28 0.1 10 20 21.1 19 18 0 0.5 1.5
25/6/2015 14:20 31 0 10 20 21.1 19 18 0.1 0.5 1.5
26/6/2015 8:20 Rain 28 0 10 20 21.1 19 18 0.1 0.5 1.5
26/6/2015 14:20 31 0 10 20 21.1 19 18 0 0.5 1.5
27/6/2015 8:20 Sunny 28 0 10 20 21.1 19 18 0.2 0.5 1.5
27/6/2015 14:20 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
29/6/2015 8:20 Sunny 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
29/6/2015 14:20 32 0 10 20 21.1 19 18 0 0.5 1.5
30/6/2015 8:20 Sunny 28 0 10 20 21.1 19 18 0.1 0.5 1.5
30/6/2015 14:20 33 0.1 10 20 21.1 19 18 0.2 0.5 1.5

Remark:

Parameter Criteria Measurement
Oxygen Action Level < 19%
Limit Level < 18%
Methane Action Level > 10% LEL (> 0.5% v/v)
Limit Level > 20% LEL (>1% v/v)
Carbon Action Level > 0.5%
Dioxide Limit Level > 1.5%

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

AUES

8th Monthly Environmental Monitoring and Audit (EM&A) Report – June 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 March to 30 June 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\June 2015\R0104v2.docx

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

AUES

8th Monthly Environmental Monitoring and Audit (EM&A) Report – June 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 March to 30 June 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\June 2015\R0104v2.docx