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

AUES

37th Monthly Environmental Monitoring and Audit (EM&A) Report – November 2017

Annotation: During 1 to 30 November 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\November 2017\R0360v2.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 1/11/2017 8:00 Sunny 20 0.1 10 20 21 19 18 0.2 0.5 1.5
1/11/2017 14:00 27 0.1 10 20 20.9 19 18 0.1 0.5 1.5
2/11/2017 8:00 Sunny 21 0.1 10 20 20.9 19 18 0.1 0.5 1.5
2/11/2017 14:00 28 0.1 10 20 20.8 19 18 0.1 0.5 1.5
3/11/2017 8:00 Sunny 22 0.1 10 20 21 19 18 0.2 0.5 1.5
3/11/2017 14:00 28 0.1 10 20 20.9 19 18 0.2 0.5 1.5
4/11/2017 8:00 Sunny 21 0.1 10 20 21 19 18 0.1 0.5 1.5
4/11/2017 14:00 26 0.1 10 20 20.9 19 18 0.2 0.5 1.5
6/11/2017 8:00 Cloudy 21 0.1 10 20 21 19 18 0.2 0.5 1.5
6/11/2017 14:00 26 0.1 10 20 20.9 19 18 0.1 0.5 1.5
7/11/2017 8:00 Fine 22 0.1 10 20 21.1 19 18 0.2 0.5 1.5
7/11/2017 14:00 26 0.1 10 20 20.8 19 18 0.2 0.5 1.5
8/11/2017 8:00 Fine 23 0.1 10 20 20.9 19 18 0.1 0.5 1.5
8/11/2017 14:00 27 0.1 10 20 21 19 18 0.2 0.5 1.5
9/11/2017 8:00 Cloudy 23 0.1 10 20 20.9 19 18 0.2 0.5 1.5
9/11/2017 14:00 27 0.1 10 20 21 19 18 0.1 0.5 1.5
10/11/2017 8:00 Sunny 23 0.1 10 20 21 19 18 0.2 0.5 1.5
10/11/2017 14:00 28 0.1 10 20 20.8 19 18 0.1 0.5 1.5
11/11/2017 8:00 Sunny 23 0.1 10 20 21 19 18 0.1 0.5 1.5
11/11/2017 14:00 28 0.1 10 20 20.9 19 18 0.1 0.5 1.5
13/11/2017 8:00 Cloudy 21 0.1 10 20 20.9 19 18 0.2 0.5 1.5
13/11/2017 14:00 24 0.1 10 20 21 19 18 0.2 0.5 1.5
14/11/2017 8:00 Sunny 22 0.1 10 20 20.9 19 18 0.2 0.5 1.5
14/11/2017 14:00 24 0.1 10 20 21 19 18 0.2 0.5 1.5
15/11/2017 8:00 Fine 22 0.1 10 20 21.1 19 18 0.1 0.5 1.5
15/11/2017 14:00 24 0.1 10 20 20.8 19 18 0.2 0.5 1.5
16/11/2017 8:00 Sunny 22 0.1 10 20 20.8 19 18 0.1 0.5 1.5
16/11/2017 14:00 27 0.1 10 20 21 19 18 0.2 0.5 1.5
17/11/2017 8:00 Sunny 22 0.1 10 20 21 19 18 0.2 0.5 1.5
17/11/2017 14:00 26 0.1 10 20 20.8 19 18 0.2 0.5 1.5
18/11/2017 8:00 Cloudy 20 0.1 10 20 21 19 18 0.1 0.5 1.5
18/11/2017 14:00 27 0.1 10 20 21.1 19 18 0.2 0.5 1.5
20/11/2017 8:00 Sunny 18 0.1 10 20 20.8 19 18 0.2 0.5 1.5
20/11/2017 14:00 20 0.1 10 20 20.7 19 18 0.1 0.5 1.5
21/11/2017 8:00 Sunny 17 0.1 10 20 21 19 18 0.1 0.5 1.5
21/11/2017 14:00 21 0.1 10 20 20.8 19 18 0.2 0.5 1.5
22/11/2017 8:00 Sunny 17 0.1 10 20 20.9 19 18 0.2 0.5 1.5
22/11/2017 14:00 23 0.1 10 20 21 19 18 0.1 0.5 1.5
23/11/2017 8:00 Sunny 16 0.1 10 20 21 19 18 0.2 0.5 1.5
23/11/2017 14:00 20 0.1 10 20 20.9 19 18 0.2 0.5 1.5
24/11/2017 8:00 Sunny 16 0.1 10 20 21 19 18 0.1 0.5 1.5
24/11/2017 14:00 21 0.1 10 20 20.9 19 18 0.2 0.5 1.5
25/11/2017 8:00 Sunny 17 0.1 10 20 20.9 19 18 0.1 0.5 1.5
25/11/2017 14:00 19 0.1 10 20 21 19 18 0.1 0.5 1.5
27/11/2017 8:00 Hazy 18 0.1 10 20 20.9 19 18 0.1 0.5 1.5
27/11/2017 14:00 22 0.1 10 20 20.8 19 18 0.2 0.5 1.5
28/11/2017 8:00 Sunny 21 0.1 10 20 21 19 18 0.2 0.5 1.5
28/11/2017 14:00 25 0.1 10 20 20.8 19 18 0.2 0.5 1.5
29/11/2017 8:00 Sunny 21 0.1 10 20 21 19 18 0.1 0.5 1.5
29/11/2017 14:00 26 0.1 10 20 20.7 19 18 0.1 0.5 1.5
30/11/2017 8:00 Sunny 21 0.1 10 20 21.1 19 18 0.2 0.5 1.5
30/11/2017 14:00 25 0.1 10 20 21 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%