Vol2_Main Report_psukpp

Proposed Reclamation & Dredging Works for the Penang South Reclamation (PSR) F6.32 Borelog profiles (ABH1 to ABH13)
Environmental Impact Assessment (2ndSchedule) Study

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Volume 2: Main ReportF6.33 Borelog profiles (ABH14 to ABH23)
Chapter 6 | Existing Environment

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Proposed Reclamation & Dredging Works for the Penang South Reclamation (PSR)
Environmental Impact Assessment (2ndSchedule) Study

6.2.6.4 Reclamation Embankment Stability Analyses

Reclamation embankment stability analyses were conducted based on conditions as
stipulated in T6.6. The result shows that the embankment is stable as shown in T6.7 and
T6.8.

T6.6 Factors of Safety (FoS) for each stage

Stage Condition Sea Water Condition FOS
1.2
Undrained (Total Stress Parameters) Normal – MLWS 1.1
Construction Stage Rapid - MHWSa - MSLb 1.4
1.2
Undrained (Total Stress Parameters)

Serviceability Drained (Effective Stress Parameters) Normal – MLHW
Stage Drained (Effective Stress Parameters) Rapid - MHWSa - MSLb

Notes: i) Normal – Groundwater level and sea level are at the same level
ii) Rapid - Groundwater level and sea level are not at the same level
iii) a – Groundwater level
iv) b – Sea level

T6.7 Stability analyses summary for sand bund

Factor of Safety (Fos)

Filling Stage Normal Rapid Drawdown Remark

Construction Circular Wedge Min Circular Wedge Min Achieved minimum
Sand containment FoS FoS safety factor
bund
Fill 0.5 m above 1.4 1.8 1.2 1.6 1.7 1.1 Achieved minimum
MHWS with PVD safety factor
installation and 0.5 1.2 1.3 1.2 1.2 1.3 1.1
m thick surcharge Achieved minimum
Fill to designed 1.3 1.5 1.2 1.4 1.5 1.1 safety factor
surcharge level
Serviceability 1.5 1.6 1.4 1.5 1.5 1.2 Achieved minimum
Trim to final safety factor
platform level

T6.8 Stability analyses summary for rock bund

Factor of Safety (Fos)

Filling Stage Normal Rapid Drawdown Remark

Construction Circular Min FoS Circular Min FoS Achieved minimum
safety factor
Rock containment bund 1.33 (R to L) 1.20 - 1.10 Achieved minimum
1.20 (L to R) safety factor
Fill 0.5 m above MHWS with Achieved minimum
PVD installation and 0.5 m 1.22 1.20 - 1.10 safety factor
thick surcharge
Fill to designed surcharge 1.23 1.20 1.20 1.10 Achieved minimum
level safety factor
Serviceability

Trim to final platform level 2.07 1.40 1.95 1.20

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Chapter 6 | Existing Environment

6.2.7 Water Quality

18 water quality sampling stations were identified within the Project area as shown in T6.9
and F6.34. Water samples at stations WQ1 to WQ13 were taken on 9 January 2016 for
spring tide, both during flooding and ebbing; and on 5 February 2016 for neap tide.
Additional sampling stations WQ14 to WQ17 were selected later on to include an additional
discharge outlet from Penang Island as well as consideration of beaches on the man-made
islands. The samplings for stations WQ14 to WQ17 were conducted on 4 March 2016 for
flooding and ebbing. The last sampling exercise at Pulau Betung (WQ18) was the final
addition as per TOR review panel’s comments. It was completed on 25 May 2016 and 2
June 2016 for neap and spring tides, respectively. It is to be noted that the weather was fine
during all sampling sessions.

T6.9 Coordinates of the water quality sampling stations

Station Coordinates Type of Water Description

WQ1 5° 14' 19.01'' N, Marine North of Pulau Kendi
100° 11' 0.34'' E

WQ2 5° 16' 22.154'' N, Marine About 3 km to the west of
100° 9' 13.46'' E Tanjung Gertak Sanggul

WQ3 5° 16' 59.78'' N, River River mouth of Sungai
100° 11' 53.75'' E Gertak Sanggul

WQ4 5° 16' 59.7'' N, River River mouth of Sungai
WQ5 100° 12' 33.5'' E Marine Gemuruh
WQ6 Marine
WQ7 5° 16' 54.96'' N, River Proposed flushing channel between Tanjung
100° 13' 36.24'' E Bongkok and the proposed Island B
5° 16' 40.04'' N, Proposed flushing channel between Tanjung Chut
100° 15' 3.19'' E and the proposed Island A

5° 16' 56.26'' N, River mouth of Sungai
100° 15' 27.6'' E Bayan Lepas

WQ8 5° 16' 10.062'' N, Marine About 1.5 km to the east of
100° 17' 37.68'' E Kampung Teluk Tempoyak

WQ9 5° 15' 7.52'' N, Marine North of Pulau Rimau
100° 16' 24.54'' E

WQ10 5° 14' 5.429'' N, Marine About 3 km to the south
100° 17' 59.24'' E east of Pulau Rimau

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Proposed Reclamation & Dredging Works for the Penang South Reclamation (PSR)
Environmental Impact Assessment (2ndSchedule) Study

T6.9 Coordinates of the water quality sampling stations

Station Coordinates Type of Water Description

WQ11 5° 12' 56.51'' N, Marine About 3 km to the south of
100° 14' 49.159'' E the proposed Island A

WQ12 5° 14' 12.098'' N, Marine About 2 km to the south of
100° 13' 2.447'' E the proposed Island B

WQ13 5° 17' 16.7'' N, River River mouth of Sungai
100° 13' 31.4'' E River Teluk Kumbar
Marine
WQ14 5° 17' 3.49" N, In front of two main
100° 14' 10.87" E discharge outlets from
Teluk Kumbar
WQ15 5° 15' 39.6'' N,
100° 11' 38.4'' E In front of the proposed
beach at Island C

WQ16 5° 15' 39.6'' N, Marine In front of the proposed
100° 12' 50.4'' E beach at Island B

WQ17 5° 15' 3.6'' N, Marine In front of the proposed
100° 14' 13.2'' E beach at Island A

WQ18 5°18’51.1” N, Marine Near aquaculture at Pulau
100°11’11.3” E Betung

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F6.34 Water quality sampling stations Volume 2: Main Report
Chapter 6 | Existing Environment

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Volume 2: Main Report
Chapter 6 | Existing Environment

6.2.7.1 Methodology

Marine water samples were taken at three depths (surface, middle and bottom) at stations
with water depths of more than 5 m. Two-depth sampling was applied for water depths
ranging from 3 to 5 m while only one depth sampling was done at those of less than 3 m.
The sampling details are listed in T6.10. The samples were analyzed by an accredited
laboratory [ALS Technichem (M) Sdn. Bhd.]. In-situ analyses were also made using portable
analytical meters which comply with the standard methods as specified by the APHA
procedures.

Items Details T6.10
Temperature, salinity, pH, conductivity, turbidity, dissolved
Physical oxygen (DO), total suspended solids (TSS) Water quality
Ammoniacal nitrogen, phosphate, nitrate, sulphate sampling details
Anions Cr, Cd, Cu, Ni, Fe, Pb, Mn, As, Hg
Cations/Heavy Metals BOD, Total Organic Carbon (TOC), oil and grease
Organics Fecal coliform, E. Coli
Microbial 18
Number of stations 3 depths (surface, middle, bottom)
Depths Spring and neap (flooding and ebbing)
Tides

6.2.7.2 Results

The results for all water quality sampling sessions are tabulated in T6.11 and T6.12. The
results obtained for marine water are compared with the Malaysian Marine Water Quality
Criteria and Standard (MWQCS) (T6.13).

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Proposed Reclamation & Dredging Works for the Penang South Reclamation (PSR)T6.11 Baseline water quality results (spring tide)
Environmental Impact Assessment (2ndSchedule) Study
WQ1 (Marine) WQ2 (Marine)
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Parameter Unit Ebbing (27.0 m) Flooding (27.2 m) Ebbing (18.6 m) Flooding (19.0 m)
oC
pH mg/L Surface Middle Bottom Surface Middle Bottom Surface Middle Bottom Surface Middle Bottom
Temperature ppt
DO uS/cm 8.41 8.36 8.3 8.18 8.33 8.28 8.44 8.41 8.34 8.43 8.34 8.39
Salinity NTU
Conductivity 30.3 29.8 29.6 30.2 29.8 29.6 30 29.6 29.4 30 29.4 29.5
Turbidity mg/L
TSS 4.7 3.8 4.4 5.2 4.9 4.5 5.5 4.3 3.8 4.7 4.1 3.9
COD cfu/100
BOD ml 9.91 9.97 9.92 29.96 9.81 30.58 30.11 30.52 30.59 30.11 30.57 30.53
Oil & Grease
TOC 17,036 16,900 16,932 46,395 16,790 47,190 46,596 47,131 47,228 46,587 47,230 47,152
Chlorophyll-A
Ammoniacal 775756 58885 6
Nitrogen (NH3-N)
Nitrate 15 18 13 15 10 14 17 19 16 17 12 19
Phosphate
Cadmium (Cd) 16 18 20 10 11 12 19 19 15 15 16 17
Chromium (Cr)
Arsenic (As*) 567335 89545 5
Lead (Pb)
Copper (Cu) <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1
Manganese (Mn)
Nickel (Ni) 0.5 0.4 0.5 0.1 0.4 0.3 0.8 0.4 0.4 0.3 0.5 0.4
Iron (Fe)
E. coli <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Faecal Coliform
0.34 0.04 0.01 0.05 0.35 0.08 0.03 0.01 0.01 0.15 0.06 0.03

0.96 1.35 0.14 0.59 0.16 0.33 1.03 1.40 1.45 0.47 0.39 0.32
0.23 0.35 0.37 0.16 0.36 0.13 0.26 0.32 0.42 0.25 0.08 0.35
<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 <0.001 <0.001 <0.001
<0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
0.003 0.028 0.026 0.003 0.006 0.130 0.003 0.016 0.028 0.009 0.019 <0.001
<0.001 <0.001 0.003 0.001 <0.001 0.001 <0.001 <0.001 <0.001 0.001 0.002 <0.001
0.002 0.006 0.008 0.002 0.002 0.005 0.002 0.003 0.022 0.003 0.004 <0.001
<0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
0.05 0.14 0.16 0.01 0.03 0.10 0.4 0.06 0.42 0.04 0.18 0.18
<1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1
660,000 44,000 <1 21,100 71,000 53,000 56,000 5,000 1,000 103,000 11,400 13,300

Note: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon

T6.11 Baseline water quality results (spring tide) (cont’d)

WQ5 (Marine) WQ6 (Marine) WQ8 (Marine)

Parameter Unit Ebbing Flooding Ebbing Flooding Ebbing (7.1 m) Flooding (7.0 m)
(1.6 m) (2.1 m) (1.1 m) (1.6 m)

Surface Surface Surface Surface Surface Middle Bottom Surface Middle Bottom
8.51 8.51 8.48 8.22 8.08 8.16
pH 8.21 8.44 8.49 8.52 30.4 30.2 29.9 29.8 29.8 29.5
Temperature 6.3 5.9 5.2 5.3 4.8 4.6
DO oC 32.4 31.1 32.1 31.3 29.91 29.49 29.61 29.94 29.85 29.87
Salinity mg/L
Conductivity ppt 4.6 5.2 7.20 5.2 45,915 45,504 45,907 46,203 46,173 46,237
Turbidity uS/cm 6 8 7 3 5 5
TSS NTU 29.56 29.79 29.46 29.52 12 16 14 15 13 10
COD 15 19 15 18 16 9
BOD mg/L 46,587 46,198 45,704 45,859 5 6 5 7 5 6
Oil & Grease <1 <1 <1 <1 <1 <1
TOC cfu/100 59 87 0.7 0.6 0.5 1.0 0.2 0.3
Chlorophyll-A ml
Ammoniacal Nitrogen (NH3-N) 13 18 19 16 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Nitrate 0.02 0.07 0.12 0.42 0.04 0.08
Phosphate 16 14 18 19 2.30 2.55 2.22 0.08 0.06 0.07
Cadmium (Cd) 0.43 0.44 0.43 0.07 0.15 0.37
Chromium (Cr) 55 76 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Arsenic (As*) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lead (Pb) <1 <1 <1 <1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Copper (Cu) 0.001 0.005 0.019 0.001 0.064 0.024
Manganese (Mn) 1.2 0.6 1.5 0.7 0.001 0.002 0.002 <0.001 0.004 0.004
Nickel (Ni) 0.012 0.004 0.013 0.009 0.014 0.015
Iron (Fe) <0.5 0.5 <0.5 0.9 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
E. coli 0.11 0.06 0.16 0.06 0.06 0.03
Faecal Coliform 0.13 0.10 0.07 0.52 <1 <1 <1 <1 <1 <1
100 2,300 31,000 <1 44,000 <1
0.64 0.21 2.19 0.41

0.23 0.05 0.43 0.27

<0.001 <0.001 <0.001 <0.001

<0.001 <0.001 <0.001 <0.001

<0.01 <0.01 <0.01 <0.01
Volume 2: Main Report
Chapter 6 | Existing Environment<0.001<0.0010.003<0.001

6-44 <0.001 <0.001 0.002 <0.001

0.018 0.012 0.011 0.014

<0.001 <0.001 <0.001 <0.001

0.10 0.04 0.19 0.08

<1 <1 <1 <1

2,500 700 6,300 2,300

Notes: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon

Proposed Reclamation & Dredging Works for the Penang South Reclamation (PSR)T6.11 Baseline water quality results (spring tide)
Environmental Impact Assessment (2ndSchedule) Study
WQ9 (Marine) WQ10 (Marine)
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Parameter Unit Ebbing (9.6 m) Flooding (10.0 m) Ebbing Flooding (4.1 m)
oC (3.0 m)
pH mg/L
Temperature ppt Surface Middle Bottom Surface Middle Bottom Surface Surface Bottom
DO uS/cm 8.27 8.42 8.46 8.26 8.32 8.36
Salinity NTU 30.4 30 30.1 28.7 29.6 29.7 8.44 8.41 8.43
Conductivity 6.9 5.7 5.5 4.5 4.2 4.8
Turbidity mg/L 29.63 29.66 29.64 9.87 9.81 29.92 31.1 30.1 30.3
TSS
COD cfu/100 ml 45,955 45,933 45,977 16,955 17,090 46,321 5.6 4.6 4.8
BOD 7 7 5 5 7 5
Oil & Grease 14 14 10 10 14 10 29.84 29.57 29.6
TOC 20 18 18 12 13 18
Chlorophyll-A 7 6 6 4 6 6 45,989 45,858 45,876
Ammoniacal Nitrogen (NH3-N) <1 <1 <1 <1 <1 <1
Nitrate 0.8 0.6 0.6 0.3 0.5 0.5 86 6
Phosphate
Cadmium (Cd) <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 12 13 14
Chromium (Cr) 0.06 0.01 0.14 0.04 0.20 0.04
Arsenic (As*) 3.17 3.67 1.94 0.02 0.07 0.49 16 17 16
Lead (Pb) 0.52 0.56 0.43 0.16 0.35 0.12
Copper (Cu) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 56 6
Manganese (Mn) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Nickel (Ni) <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <1 <1 <1
Iron (Fe) <0.001 0.023 0.007 0.002 0.022 0.020
E. coli 0.002 <0.001 0.002 <0.001 0.001 0.004 0.6 0.2 0.8
Faecal Coliform 0.010 0.010 0.012 0.001 0.004 0.011
<0.001 <0.001 <0.001 0.001 <0.001 <0.001 <0.5 <0.5 <0.5
0.08 0.12 0.19 0.11 0.19 0.20
<1 <1 <1 <1 <1 <1 0.03 0.36 0.08
40,000 1,700 4,000 6,000 <1 900
3.17 0.04 0.05

0.16 0.44 0.15

<0.001 <0.001 <0.001

<0.001 <0.001 <0.001

<0.01 <0.01 <0.01

0.001 0.002 0.020

0.001 0.001 0.002

0.005 0.016 0.025

<0.001 <0.001 <0.001

0.09 0.30 0.49

<1 <1 <1

<1 2,700 1,000

Notes: DO: Dissolved Oxygen COD: Chemical Oxygen Demand BOD: Biochemical Oxygen Demand TOC: Total Organic Carbon