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Cahya Mata
Sarawak
Berhad
S U S T A I N A B I L I T Y
R E P O R T
2 0 1 6
AIR EMISSIONS, NOISE, DUST AND VIBRATIONS
In the name of good environmental practices and
conscientious business processes, the Group and all its
subsidiary companies continue to focus on conducting
regular environment monitoring to keep our practices
within the regulatory standards and to prevent industrial
pollution.
Based on ambient air monitoring at Pending, Bintulu, Sibu
Bulk Terminal, Miri Bulk Terminal and Mambong’s Cement
Integrated Plant, the average Total Suspended Particles for
the Cement Division in 2016 was below 130 ug/Nm
3
which
was still within the Malaysian Recommended Environmental
Air Quality Guidelines of 260 ug/Nm
3
.
CMS Cement Sdn Bhd is continuously focused on
controlling their environment. Their environmental
objectives and targets for the short, medium and long-
term can be seen in their following emissions control
goals:
• Short-Term – to improve the emissions from the clinker
unloading/discharging activities from the current
level (which is within the recommended guidelines);
• Medium-Term – to reduce the stacks emission to a
level lower than 100 mg/Nm
3
for the Clinker plant
and below 200 mg/Nm
3
for cement plant stacks; and
• Long-Term – to reduce emission from main stacks
below the stipulated requirements under the
guidelines of Clean Air Regulation 2014 with the
Clinker plant below 50 mg/Nm
3
and the Cement
plants below 150 mg/Nm
3.
Emissions Management
The results of CMS’ Total Suspended Particulates are
presented below. We have included three quarries; five
monitoring stations at the Sarawak Museum Campus
project; and CMS Clinker’s waste gas stack, cooler stack
and coal stack. All readings are within the Malaysian
Recommended Environmental Air Quality Guidelines of
260 µg/m
3
and the Environmental Quality Act 2014 of 50
mg/Nm
3
(for CMS Clinker Sdn Bhd).
Air Quality Results (µg/m
3
)
Location
Total Suspended
Particulate (µg/m3)
Readings Taken
Quarry at Mile 7
71.0
23.1
Q1 2016
Q2 2016
Quarry at Mile 9½
60.1
20.8
Q1 2016
Q2 2016
Gunung Sibanyis
56.6
63.4
28.2
Q1 2016
Q2 2016
Q3 2016
Location
Total Suspended
Campus Particulate Readings Taken
PPES Works (Sarawak) Sdn Bhd - Sarawak Museum Project
A1
34.2 µg/m
3
Q4 2016
A2
41.32 µg/m
3
Q4 2016
A3
39.5 µg/m
3
Q4 2016
A4
67.8 µg/m
3
Q4 2016
A5
17.03 µg/m
3
Q4 2016
CMS Clinker Sdn Bhd
Waste Gas Stack
9.92 mg/Nm
3
Quarterly
Cooler Stack
11.75 mg/Nm
3
Quarterly
Coal Mill Stack
14.25 mg/Nm
3
Quarterly
Noise Monitoring
Based on noise monitoring at Pending, Bintulu, Sibu
Bulk Terminal, Miri Bulk Terminal and the Mambong’s
Cement Integrated Plant, the average noise level for the
Cement Division in 2016 is 70 d(B)A and is within the
recommended national guideline. The Cement Division
achieves this by the following:
1. For transfer chutes: put liners with defector plate and
an enlarged chute size so as to minimise noise levels.
2. Around the plant’s boundary: plant more trees which
help in absorbing sound and thus reducing noise levels.
3. For high pressure blowers: install inlet silencers.
4. For compressor room: Install heavy-duty doors.
A summary of the noise results at three of CMS Quarries
Sdn Bhd’s sites is presented below. The noise permissible
level for day time is 65 d(B)A and for night time, 55 d(B)A.
Noise from blasting is covered in our vibrations section.
The noise level during day-time in Q2 2016 is slightly
higher in comparison to Q1 2016 due to increased
activity, particularly from heavy transporting vehicles,
during the period.
The noise level during night-time is mostly generated by
public vehicles along the main road.
Q1 2016
Q2 2016
Location
Day-time
(d(B)A)
Night-
time
(d(B)A)
Day-time
(d(B)A)
Night-
time
(d(B)A)
Quarry at Mile 7
55.6
56.5
55.7
48.8
Quarry at Mile 9½ 56.9
54,4
-
-
Gunung Sibanyis
50.5
63.4
59.2
45.1
Environment