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

AUES

35th Monthly Environmental Monitoring and Audit (EM&A) Report – September 2017

Annotation: During 1 to 30 September 2017, major construction activity at TD1 and the specified works included excavation, stitching, 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\2017\September 2017\R0338v2.docx

Landfill Gas Monitoring Results (TD1)

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
TD1 1/9/2017 8:00 Cloudy 26 0.1 10 20 21 19 18 0.1 0.5 1.5
1/9/2017 14:00 31 0.1 10 20 20.8 19 18 0.2 0.5 1.5
2/9/2017 8:00 Fine 26 0.1 10 20 21.1 19 18 0.1 0.5 1.5
2/9/2017 14:00 30 0.1 10 20 21 19 18 0.1 0.5 1.5
4/9/2017 8:00 Rain 25 0.1 10 20 20.8 19 18 0.1 0.5 1.5
4/9/2017 14:00 28 0.1 10 20 20.7 19 18 0.1 0.5 1.5
5/9/2017 8:00 Fine 26 0.1 10 20 21 19 18 0.2 0.5 1.5
5/9/2017 14:00 30 0.1 10 20 20.9 19 18 0.1 0.5 1.5
6/9/2017 8:00 Fine 27 0.1 10 20 21 19 18 0.1 0.5 1.5
6/9/2017 14:00 32 0.1 10 20 20.7 19 18 0.1 0.5 1.5
7/9/2017 8:00 Sunny 28 0.1 10 20 20.9 19 18 0.1 0.5 1.5
7/9/2017 14:00 31 0.1 10 20 21 19 18 0.1 0.5 1.5
8/9/2017 8:00 Sunny 27 0.1 10 20 21 19 18 0.2 0.5 1.5
8/9/2017 14:00 31 0.1 10 20 21 19 18 0.2 0.5 1.5
9/9/2017 8:00 Rain 26 0.1 10 20 20.9 19 18 0.2 0.5 1.5
9/9/2017 14:00 32 0.1 10 20 20.7 19 18 0.1 0.5 1.5
11/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
11/9/2017 14:00 32 0.1 10 20 21 19 18 0.1 0.5 1.5
12/9/2017 8:00 Sunny 28 0.1 10 20 21 19 18 0.1 0.5 1.5
12/9/2017 14:00 33 0.1 10 20 20.7 19 18 0.1 0.5 1.5
13/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
13/9/2017 14:00 34 0.1 10 20 21 19 18 0.2 0.5 1.5
14/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
14/9/2017 14:00 32 0.1 10 20 21 19 18 0.2 0.5 1.5
15/9/2017 8:00 Fine 28 0.1 10 20 21 19 18 0.2 0.5 1.5
15/9/2017 14:00 33 0.1 10 20 20.9 19 18 0.1 0.5 1.5
16/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
16/9/2017 14:00 33 0.1 10 20 20.8 19 18 0.1 0.5 1.5
18/9/2017 8:00 Sunny 28 0.1 10 20 20.9 19 18 0.1 0.5 1.5
18/9/2017 14:00 33 0.1 10 20 21 19 18 0.2 0.5 1.5
19/9/2017 8:00 Sunny 27 0.1 10 20 21 19 18 0.1 0.5 1.5
19/9/2017 14:00 29 0.1 10 20 20.8 19 18 0.1 0.5 1.5
20/9/2017 8:00 Fine 28 0.1 10 20 21 19 18 0.1 0.5 1.5
20/9/2017 14:00 32 0.1 10 20 20.7 19 18 0.1 0.5 1.5
21/9/2017 8:00 Hazy 27 0.1 10 20 21.1 19 18 0.2 0.5 1.5
21/9/2017 14:00 32 0.1 10 20 21.1 19 18 0.1 0.5 1.5
22/9/2017 8:00 Rain 26 0.1 10 20 21 19 18 0.2 0.5 1.5
22/9/2017 14:00 32 0.1 10 20 20.9 19 18 0.2 0.5 1.5
23/9/2017 8:00 Rain 26 0.1 10 20 20.9 19 18 0.1 0.5 1.5
23/9/2017 14:00 31 0.1 10 20 20.8 19 18 0.1 0.5 1.5
25/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.2 0.5 1.5
25/9/2017 14:00 32 0.1 10 20 21 19 18 0.1 0.5 1.5
26/9/2017 8:00 Fine 28 0.1 10 20 21 19 18 0.2 0.5 1.5
26/9/2017 14:00 33 0.1 10 20 21.1 19 18 0.1 0.5 1.5
27/9/2017 8:00 Sunny 27 0.1 10 20 21 19 18 0.2 0.5 1.5
27/9/2017 14:00 33 0.1 10 20 20.8 19 18 0.2 0.5 1.5
28/9/2017 8:00 Sunny 28 0.1 10 20 21 19 18 0.2 0.5 1.5
28/9/2017 14:00 34 0.1 10 20 20.9 19 18 0.2 0.5 1.5
29/9/2017 8:00 Cloudy 29 0.1 10 20 21 19 18 0.2 0.5 1.5
29/9/2017 14:00 33 0.1 10 20 21.1 19 18 0.1 0.5 1.5
30/9/2017 8:00 Sunny 28 0.1 10 20 21.1 19 18 0.1 0.5 1.5
30/9/2017 14:00 32 0.1 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%