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Environmental Protection Department The Government of the Hong Kong Special Administrative Region

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Marine Water Quality in Hong Kong in 2011

Mission To conduct a comprehensive and scientific monitoring programme that helps safeguard the health of Hong Kong’s marine environment and achieve the Water Quality Objectives.

Disclaimer Whilst the Government of the Hong Kong Special Administrative Region ("the Government") endeavours to ensure the accuracy of the information in this report, the Government (including its officers and employees) makes no warranty, statement or representation, expressed or implied, with respect to accuracy, completeness, or usefulness of the information contained herein, and in so far as permitted by law, shall not have any legal liability or responsibility (including liability for negligence) for any loss, damage, injury and death which may result, whether directly or indirectly, from the supply or use of such information. Users are responsible for making their own assessments of all information contained in this publication before acting on it. Copyright Notices The information contained in this publication can be used freely for study, research and training purposes subject to acknowledgement of the source. Use of the information for purposes other than those stated above requires prior written permission of the Director of Environmental Protection. Acknowledgements We acknowledge the following parties for their contributions to this report: Government Laboratory for undertaking chemical analyses of water and sediment samples; Marine Department for managing and operating the monitoring vessel Dr. Catherine Lam in conducting field sampling and measurement; Agriculture, Fisheries and Conservation Department for providing photos and information on marine parks, fish culture zones and red tides; Lands Department for providing information on geography and aerial photo of Hong Kong.


Introduction The Hong Kong Special Administrative Region (HKSAR) has a land area of 1,104km2 and 1,651km2 of marine waters. It has long coastlines, including 463km in Kowloon Peninsula and New Territories and 727km in Hong Kong Island, Lantau Island and other small islands. Excluding Hong Kong Island and Lantau Island, there are 261 islands in the territory, each with an area greater than 500m2. Its coastal waters support a variety of marine life.

1


To protect the marine environment of Hong Kong, the Environmental Protection Department (EPD) has initiated a comprehensive marine water quality monitoring programme since 1986. The aims and objectives of the programme are to:

o indicate the state of coastal waters; o reveal long-term changes in water quality; o provide a basis for planning water pollution control strategies; and o assess compliance with the statutory Water Quality Objectives (WQOs).

Every month, the EPD monitors the marine water quality at 76 monitoring stations and collects and examines phytoplankton samples from 25 of the stations. We also monitor the water quality of 17 typhoon shelters, marinas, and dockyard across Hong Kong bimonthly. In addition, sediment samples are collected and analyzed at 60 stations, covering the 17 typhoon shelters, marinas, and dockyard, twice a year.

EPD’s marine monitoring vessel

“Dr. Catherine Lam”

2


The EPD has a dedicated marine monitoring vessel “Dr. Catherine Lam”. It is equipped with an advanced conductivity-temperature-depth (CTD) profiler linked to a computer-controlled rosette water sampler which takes field measurements and collects water samples simultaneously. Marine sediments are collected using bottom sediment grabs. The water and sediment samples are analysed by the EPD’s laboratories and the Government Laboratory on over 80 physical, chemical and biological parameters.

EPD’s staff and the computer-controlled rosette water sampler

3


The State of Hong Kong Marine Waters in 2011 The overall WQO compliance rate of the whole territory is based on the combined individual compliance rates of all stations with the marine WQOs for four key parameters namely Dissolved Oxygen (DO), Total Inorganic Nitrogen (TIN), Unionised Ammonia (NH3) and E. coli bacteria. The overall marine water quality compliance with the WQOs in Hong Kong was 75% in 2011, compared with 80% in 2010.

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

Year

% W

QO

com

plia

nce

85%

87%

79%

70%

83%

76%

73%

85%79%

76%

87%

80%75%

Overall compliance with the marine Water Quality Objectives in Hong Kong, 1986-2011

4


30

40

50

60

70

80

90

100

110

86 88 90 92 94 96 98 00 02 04 06 08 10

% co

mpl

ianc

e

YearCompliance rate for DO objective

Overall compliance rate for WQOs

Compliance rate for NH3 objectiveCompliance rate for TIN objective

Compliance rate for E. coli objective for secondary contact recreation subzones

Overall compliance rate with the WQOs and the compliance rates for the four objectives in Hong Kong, 1986-2011

A lower overall WQO compliance rate in 2011 compared with 2010 was mainly due to a decline in the compliance rates with DO objective from 71.1% in 2010 to 69.7% in 2011 and the TIN objective from 65.2% in 2010 to 50.7% in 2011.

5


Dissolved Oxygen Non-compliance with the DO objective in 2011 was observed in the Tolo Harbour and Channel Water Control Zone (WCZ), Victoria Harbour WCZ and Western Buffer WCZ.

Dissolved oxygen (depth-average) levels in Hong Kong waters

in summer months (June-September) of 2011

Water Quality Parameter Water Quality Objective Water Control Zone (WCZ) to which the WQO applies

Dissolved Oxygen

(depth-average)

Not less than 4 mg/L for

90% of samples

Marine waters of all WCZs except Tolo Harbour &

Channel WCZ

Dissolved Oxygen

(bottom)

Not less than 2 mg/L for

90% of samples

Marine waters of all WCZs except Tolo Harbour &

Channel WCZ

Dissolved Oxygen

(all depths) Not less than 4mg/L Channel Subzone in Tolo Harbour & Channel WCZ

Dissolved Oxygen

(surface to 2m above bottom) Not less than 4mg/L

Buffer and Harbour Subzones in Tolo Harbour &

Channel WCZ

Not less than 3mg/L

Water Quality Objective for dissolved oxygen in the ten Water Control Zones

Buffer Subzone in Tolo Harbour & Channel WCZ Dissolved Oxygen

(bottom) Not less than 2mg/L Harbour Subzone in Tolo Harbour & Channel WCZ

6


Dissolved oxygen (bottom) levels in Hong Kong waters in summer months (June-September) of 2011

As pointed out in previous marine reports, the DO levels in a water body can be affected by organic pollution as well as natural factors such as temperature and stratification of the water column. High temperature can markedly reduce the solubility of oxygen in the water column, and hence reduce the DO level in hot weather. Since 2011’s monitoring data, on the basis of parameters such as organic nitrogen and 5-day Biochemical Oxygen Demand (BOD5), did not show any obvious sign of an increase in organic pollution in Hong Kong’s waters, the lower compliance rate with the DO objective in 2011 was likely related to the hot weather experienced during the summer months of that year. According to the Hong Kong Observatory’s weather report for 2011, there was an exceptionally strong anticyclone covering southern China during August making Hong Kong unusually hotter. That month’s mean temperature was one of the three hottest for August since 1884. During the summer months of 2011, low DO levels were observed in many parts of Hong Kong’s waters largely due to the unusually hot weather.

7


The correlation of low dissolved oxygen level with high temperature was also supported by the statistical analyses of marine data collected between 2002 and 2011. We observe that the decreasing DO levels were statistically and significantly correlated (p<0.001) with the increasing water and/or air temperature of various marine water bodies in Hong Kong during the last decade.

Graph showing the correlation between dissolved oxygen and sea water temperature at the stations in the Tolo Harbour and Channel (TM6), Victoria Harbour (VM5) and Western Buffer

(WM3) WCZs in 2002-2011

The low bottom DO levels of the water bodies observed in the summer months may also be related to stratification of the water column, which is formed as a consequence of water masses with different densities. Water density is strongly influenced by temperature and salinity; with less dense, warmer surface waters floating on top of denser, colder waters. Water is unable to mix across the boundary between the surface layer and lower layer, but wind, upwelling, downwelling and storms help move water across the boundary. For semi-enclosed water bodies such as Tolo Harbour, which is protected from the wind by the surrounding topography or land masses, the water column is readily “stratified” and separated into distinct top and bottom layers during the hot summer months, or during periods of heavy rainfall when the warmer surface runoff, which is less saline and lighter than sea water, drains into the sea.

8


Total Inorganic Nitrogen In terms of nutrients, although the overall annual average levels of TIN in the Victoria Harbour WCZ only increased from 0.34 mg/L in 2010 to 0.39 mg/L in 2011, the compliance rate with the TIN objective decreased markedly from 90% in 2010 to 30% in 2011. The higher non-compliance rate in 2011 was due to the fact that out of the 10 stations in the Victoria Harbour WCZ, 6 stations in the central and western parts of Victoria Harbour which marginally complied with the objective (TIN level below 0.4 mg/L) in 2010 could not comply with the WQO in 2011. The increase in TIN levels could be due to a higher background TIN level under the influence of Pearl River discharge, as reflected in the increase in TIN levels in many stations in the Northwestern and Southern WCZs, the year-to-year normal range of fluctuation of the discharge from the Tolo Harbour Effluent Export Scheme and surface run-off, as well as the gradual increase in the amount of effluent discharged from the four preliminary treatment plants located between North Point and Central during the period. After the commissioning of HATS Stage 2A in 2014, we anticipate that the pollution load into Victoria Harbour will be significantly reduced when the effluent from the four preliminary treatment plants are intercepted from direct discharge and collected for treatment at the Stonecutters Island Sewage Treatment Works.

9


The percentage compliance rates of three WCZs, i.e. Victoria Harbour, Western Buffer and North Western, are lower in 2011 as compared with those in 2010. For the Victoria Harbour WCZ, the lower compliance rate (50%) in 2011 was mainly due to the wide-spread low DO situation across the harbour particularly in the summer months as well as the increase in TIN levels which could be due to a higher background TIN level under the influence of Pearl River discharge, the year-to-year normal range of fluctuation of the discharge from the Tolo Harbour Effluent Export Scheme and surface run-off, as well as the gradual increase in the amount of effluent discharged from the four preliminary treatment plants located between North Point and Central during the period. For the Western Buffer WCZ, the lower compliance rate in 2011 was due to lower levels of DO recorded in the summer. The small drop in compliance rate in the Northwestern WCZ from 78% in 2010 to 72% in 2011 was mainly due to the higher levels of TIN recorded at the stations located at the western side of the WCZ, which could be attributed to the higher background TIN level under the influence of Pearl River discharge.

Level of compliance with the Water Quality Objectives in the ten Water Control Zones in 2010 and 2011

10


Eastern Waters

22° 20’ N

22° 10’ N

New Territories

Lantau Island

2

9

Hong Kong Island

Kowloon

3

1

5

7

2S

10.1

810.2

6

4

5

10

Shenzhen

Hong Kong Island

Kowloon

Lantau Island

N

New Territories

0 5 10km

114° 20’ E114° 10’ E114° 00’ E113° 50’ E

22° 30’ N

114° 30’ E

114° 00’ E 114° 10’ E 114° 20’ E

22° 30’ N

Eastern waters

Tolo Harbour and Channel WCZ

Port Shelter WCZ

Mirs Bay WCZ

113° 50’ E

The eastern waters cover an area of 900 km2 which comprises the Mirs Bay, Port Shelter and Tolo Harbour and Channel WCZs. These waterbodies have beautiful coastlines and good water quality in general which support a diversity of marine life. Moreover, there are six gazetted beaches (Kiu Tsui, Hap Mun Bay, Trio, Silverstrand, Clear Water Bay First and Clear Water Bay Second) in Port Shelter, three marine parks (Yan Chau Tong, Hoi Ha Wan and Tung Ping Chau), 21 fish culture zones and a number of secondary contact recreation subzones located within these three WCZs.

Kiu Tsui Beach is located at Sharp Island

in Port Shelter

11


Mirs Bay Water Control Zone

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

67%

98%100%

Year

% WQO com

plianc

e

In 2011, the overall WQO compliance rate of the Mirs Bay WCZ was 98%, same as in 2010 and 2009. The water quality of the Mirs Bay WCZ was generally good in 2011 with high DO as well as low nutrient levels which fully met their respective WQO. Moreover, Mirs Bay also complied with the bacteriological WQO of ≤ 610 E. coli cfu / 100 mL (annual geometric mean) for secondary contact recreation. The only recorded non-compliance with the WQOs was due to the low oxygen levels recorded at the sea bottom in August at station MM17 located in North Channel near Port Island, brought about by thermal stratification of the water column.

Year

Mirs Bay Water Control Zone

% W

QO

com

plia

nce

Tung Ping Chau is one of marine parks in Hong Kong and famous

for its sedimentary rock

12


13

Port Shelter Water Control Zone

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

82%

92%100%

Year

% WQO com

plianc

e

Port Shelter attracts a lot of visitors who enjoy various water sports activities, including swimming, yachting, water skiing and diving every year. The six gazetted beaches in Port Shelter were ranked “Good” in 2011 and attracted 1.36 million visitors during the 2011 bathing season. In 2011, the water quality in the Port Shelter WCZ was good with high level of DO and low levels of nutrients and E. coli. The 2011 WQO compliance rate of the Port Shelter WCZ was 92%, and one single station (PM6) failed to comply with the DO objective and two stations (PM8 and PM11) failed to comply with the TIN objective. Station PM6 is located in Hebe Haven, a semi-enclosed bay with poor water exchange. The water in the bay also tends to stratify in the warm summer months. Therefore, non-compliance with the DO objective at PM6 was most likely related to a decrease of DO solubility in the sea water due to the very hot weather recorded in June and July 2011, as well as thermal stratification of the water column

Year

Port Shelter Water Control Zone

% W

QO

com

plia

nce


On the other hand, the annual mean TIN levels at PM8 and PM11 in 2011 were 0.106 and 0.115 mg/L respectively and marginally exceeded the TIN objective (0.1 mg/L). Since both stations are located at outer Port Shelter and away from local pollution sources including surface runoffs and discharges from villages as well as fish culture zones in Sai Kung area, their non-compliance was largely due to the increasing levels of TIN levels in the eastern waters of Hong Kong in recent years, as illustrated in the trend line shown below.

Annual mean total inorganic nitrogen levels of all 23 stations located

in the eastern waters of Hong Kong in 2002-2011

14


Tolo Harbour and Channel Water Control Zone Since the implementation of the Tolo Harbour Action Plan (including control of livestock wastes, improvement of sewage treatment facilities, export of treated effluent outside Tolo Harbour and extension of village sewerage) in the mid-80s, there has been a steady improvement in water quality (e.g. a decrease in the levels of 5-day Biochemical Oxygen Demand (BOD5), E. coli, nitrogen and orthophosphate phosphorus measurements) in Tolo Harbour in the past decade. The long term data as shown in the figures below indicated the decreasing trends of organic and nutrient loading. Moreover, Tolo Harbour is also able to comply with the bacteriological WQO of ≤ 610 E. coli cfu / 100 mL (annual geometric mean) for secondary contact recreation.

15


0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

40%

57%

86% The 2011 overall WQO compliance rate of the Tolo Harbour and Channel WCZ was 57% and was slightly higher than that in 2010 (50%). Same as before, the non-compliance was solely due to the low DO situation in the summer months. As already pointed out, the low DO level in sea water could be due to the decrease in oxygen solubility during the hot weather. In addition, Tolo Harbour is a shallow semi-enclosed water body with low water exchange rate with Mirs Bay. The harbour’s essentially landlocked situation often leads to stratification of the water column inside particularly during the hot summer months. As a result, the harbour water experienced a lower compliance rate (14.3%) with the DO objective in 2011, as observed in previous years.

Year

% W

QO

com

plia

nce

Tolo Harbour and Channel Water Control Zone

Tai Mei Tuk waterfront in Tolo Harbour is one of the

most popular locations for water sports

16


Central Waters

22° 20’ N

22° 10’ N

New Territories

Lantau Island

2

9

Hong Kong Island

Kowloon

3

1

5

7

2S

10.1

810.2

6

4

5

10

Shenzhen

Hong Kong Island

Kowloon

Lantau Island

N

New Territories

0 5 10km

114° 20’ E114° 10’ E114° 00’ E113° 50’ E

22° 30’ N

114° 30’ E

114° 00’ E 114° 10’ E 114° 20’ E

22° 30’ N

113° 50’ E

Central waters

Junk Bay WCZ

Western Buffer WCZ

Eastern Buffer WCZ

Victoria Harbour WCZ

The central waters of Hong Kong, including the Victoria Harbour, Eastern Buffer, Western Buffer and Junk Bay WCZs, are important navigational channels and port areas. After the commissioning of the SCISTW under the HATS Stage 1 in 2002, about 75% of the sewage around Victoria Harbour now receives chemically enhanced primary treatment, resulting in a 70% reduction of the pollution load (in terms of organic pollutants) into the harbour. This also leads to an improvement of water quality in the harbour which can be observed particularly in the Eastern Buffer and Junk Bay WCZs.

17


18

Victoria Harbour Water Control Zone The figure below illustrates that the water quality of Victoria Harbour has been on an improving trend during the last decade after implementation of the HATS Stage 1 in end 2001.

(mg/

L)

year

(cfu

/100

mL)

year

year

(mg/

L)

year

(mg/

L)

year

(mg/

L)

E. coli

Total Inorganic Nitrogen

Orthophosphate phosphorusWater quality in Victoria Harbour WCZ, 1986-2011

0

1000

5000

6000

86 88 90 92 94 96 98 00 02 04 06 08 10

2000

3000

4000

0

0.01

0.02

0.03

0.04

0.05

0.06

86 88 90 92 94 96 98 00 02 04 06 08 10

0

0.1

0.2

0.3

0.4

0.5

86 88 90 92 94 96 98 00 02 04 06 08 10

( HATS Stage 1 commissioned in end 2001)

0

0.5

1

1.5

2

86 88 90 92 94 96 9 00 02 04 06 08 10

BOD5

8

0

0.1

0.2

0.3

0.4

86 88 90 92 94 96 98 00 02 04 06 08 10

Ammonia Nitrogen

0.28

0.13

0.297

0.498

5300

0.054

0.029

1.4

0.94

0.72

0.17

920 610

0.393

0.019


0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

45%

50%

97%

The overall WQO compliance rate of the WCZ was only 50%, as compared with 76.7% in 2010, and it was mainly due to the non-compliance with the DO objective at eight stations in the WCZ (VM1, 2, 4, 5, 6, 7, 8 and 12) and the non-compliance with the TIN objective at stations VM5, 6, 7, 8, 12, 14 and 15) in 2011.

Year

% W

QO

com

plia

nce

Victoria Harbour Water Control Zone

It should be noted that this low DO phenomenon in 2011 was also observed across the entire Victoria Harbour as well as other WCZs such as Western Buffer and North Western.

19


The overall annual average levels of TIN in Victoria Harbour only increased from 0.34 mg/L in 2010 to 0.39 mg/L in 2011. The higher non-compliance rate in 2011 was due to the fact that out of the 10 stations in the Victoria Harbour WCZ, six stations in the central and western parts of Victoria Harbour (i.e. VM5, VM6, VM7, VM8, VM12 and VM15) which marginally complied with the objective (TIN level below 0.4 mg/L) in 2010 could not comply with the WQO in 2011. The increase in TIN levels could be due to a higher background TIN level under the influence of Pearl River discharge, as reflected in the increase in TIN levels in many stations in the Northwestern and Southern WCZs, the year-to-year normal range of fluctuation of the discharge from the Tolo Harbour Effluent Export Scheme and surface run-off, as well as the gradual increase in the amount of effluent discharged from the four preliminary treatment plants located between North Point and Central during the period.

0

0.2

0.4

0.6

0.8

VM1 VM2 VM4 VM5 VM6 VM7 VM8 VM12 VM14 VM15

20102011

TIN WQO

TIN

con

cent

ratio

n (m

g/L)

Annual mean total inorganic nitrogen levels at the 10 stations in the Victoria Harbour WCZ in 2010 and 2011

20


At present, sewage discharged from the four remaining preliminary treatment plants in the middle and western parts of Hong Kong Island are still contributing to the relatively high levels of E. coli in central Victoria Harbour. To further improve the water quality of Victoria Harbour, the construction of HATS Stage 2A has proceeded with a view to commissioning by end 2014 (http://www.cleanharbour.gov.hk/english/index.html). Upon comissioning, the sewage tunnels will collect the remaining 25% of the sewage currently generated daily from North Point to Ap Lei Chau in the middle and western parts of Hong Kong Island, and convey the sewage to the SCISTW for treatment. Wan Chai East

Preliminary Treatment Works

Locations of the four preliminary treatment plants between North Point and Central

North Point Preliminary

Treatment Works

Wan Chai West Preliminary

Treatment Works

Central Preliminary Treatment Works


Treatment Works


Treatment Works


Treatment Works


Treatment Works

21


Eastern Buffer and Junk Bay Water Control Zones

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

67%

100%

Since the implementation of HATS Stage 1 in 2002 by which all sewage generated from Junk Bay (Tseung Kwan O), the Kowloon Peninsula and east of Hong Kong Island (Chai Wan) was diverted and treated at the SCISTW, the water quality of these two WCZs has improved markedly with increasing DO and decreasing nutrient and bacterical levels. In 2011, the Eastern Buffer and Junk Bay WCZs achieved full compliance (100%) with the WQOs.

Year

% W

QO

com

plia

nce

Eastern Buffer Water Control Zone

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

67%

100%

22

Year

Junk Bay Water Control Zone

% W

QO

com

plia

nce


Western Buffer Water Control Zone

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

67%

75%

100% The Western Buffer WCZ achieved a 75% overall compliance with the WQOs in 2011, lower than 2008-2010 (92%) and this was largely due to the low DO level recorded in the summer months of 2011. Regarding bacterial level, the E. coli levels at the three stations in the WCZ closest to the outfall of the SCISTW greatly decreased by over 90%, as compared with the pre-commissioning period of the Advance Disinfection Facilities before March 2010.

Year

% W

QO

com

plia

nce

Western Buffer Water Control Zone

23


Western Waters

22° 20’ N

22° 10’ N

New Territories

Lantau Island

2

9

Hong Kong Island

Kowloon

3

1

5

7

2S

10.1

810.2

6

4

5

10

Shenzhen

Hong Kong Island

Kowloon

Lantau Island

N

New Territories

0 5 10km

114° 20’ E114° 10’ E114° 00’ E113° 50’ E

22° 30’ N

114° 30’ E

114° 00’ E 114° 10’ E 114° 20’ E

22° 30’ N

Western waters

Deep Bay WCZ

North Western WCZ

113° 50’ E

The Deep Bay and North Western WCZs are located to the west of Hong Kong. Other than local discharge, both WCZs were influenced by the discharges from Pearl River during the wet season. The Deep Bay WCZ also receives discharges from Shenzhen River all year round. The Deep Bay WCZ includes the ecologically sensitive Mai Po and Inner Deep Bay Ramsar site, and areas of oyster culture. The Ramsar Site inside Deep Bay supports a high diversity of birds. About 300 species, representing about 70% of the Hong Kong avian fauna, have been recorded there. The site regularly supports over 100,000 waterbirds for the whole year and some 50,000 waterbirds in mid-winter. It is an important feeding and resting ground for wintering and migratory birds, including a number of globally threatened species (e.g. Black-faced Spoonbill, Saunders's Gull and Imperial Eagle). Some common birds in Deep Bay

24


The North Western WCZ is the water body where Chinese white dolphins are commonly spotted in areas around Lantau Island, Tuen Mun, Sha Chau and Lung Kwu Chau. Sha Chau and Lung Kwu Chau Marine Park is also the only marine park located in the western waters of Hong Kong.

Sha Chau and Lung Kwu Chau Marine Park in the North Western

WCZ is the only marine park located in the western waters of

Hong Kong

25


26

Deep Bay Water Control Zone Deep Bay is shallow with depths varying from 2m at DM1 to 8m at DM5 and its sediment laden water body is impacted by pollution from both Hong Kong and Shenzhen including discharges from Shenzhen River as well as some local unsewered villages.

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

20%

40%

53%

The Deep Bay WCZ has the poorest water quality in the territory with high concentrations of organic and inorganic pollutants and low levels of DO. The WQO compliance in the Deep Bay WCZ in 2011 was 40%, same as the previous three years. The inner bay was most affected by the discharges from Shenzhen River as well as Kam Tin River, Yuen Long Creek and Tin Shui Wai Nullah from the Hong Kong side. In 2011, none of the five stations in the Deep Bay WCZ met the TIN objective. In addition, the two stations at Inner Deep Bay near Tsim Bei Tsui (DM1 and DM2) also did not comply with the DO and unionized ammonia (NH3) objectives. Similar to previous years, the nitrogen levels in inner (inner subzone) Deep Bay (1.6 – 3.6 mg/L) and outer (outer subzone) Deep Bay (0.8 – 1.1 mg/L) were higher than the respective TIN objectives for the inner subzone (0.7 mg/L) and outer subzone (0.5 mg/L).

Year

% W

QO

com

plia

nce

Deep Bay Water Control Zone


27

North Western Water Control Zone

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

72%

53%

100%

In 2011, the North Western WCZ attained an overall WQO compliance rate of 72%, comparable to that in 2010 (78%). All stations in the WCZ fully complied with the unionised ammonia (NH3) objective but one station and four stations in 2011 failed to meet the DO and TIN objectives respectively. The high levels of TIN at the four stations (annual means 0.51-0.62 mg/L) might be associated with the higher background level of the discharge from Pearl River.

Year

% W

QO

com

plia

nce

North Western Water Control Zone


Southern Waters

0

20

40

60

80

100

86 88 90 92 94 96 98 00 02 04 06 08 10

84%

67%

Year

% WQO com

plianc

e

22° 20’ N

22° 10’ N

New Territories

Lantau Island

2

9

Hong Kong Island

Kowloon

3

1

5

7

2S

10.1

810.2

6

4

5

10

Shenzhen

Hong Kong Island

Kowloon

Lantau Island

N

New Territories

0 5 10km

114° 20’ E114° 10’ E114° 00’ E113° 50’ E

22° 30’ N

114° 30’ E

114° 00’ E 114° 10’ E 114° 20’ E

22° 30’ N

Southern waters

Southern WCZ

113° 50’ E

The southern waters consist of only one water control zone. The Southern WCZ stretches from Hong Kong Island south to Lantau Island and faces the South China Sea. The western part of the WCZ is influenced seasonally by the Pearl River flow and the effect diminishes gradually towards the eastern direction. Southern Water Control Zone

Year

Southern Water Control Zone

% W

QO

com

plia

nce

28


The Southern WCZ attained an overall 67% compliance with the WQOs in 2011, same as that in 2010. High compliance with the WQOs for unionised ammonia (100%) and dissolved oxygen (94%) were achieved in 2011. Nevertheless, all 16 stations within the WCZ failed to comply with the TIN objective in 2011, which could be related to the higher background level of the Pearl River flow. The Southern WCZ also covers a number of secondary contact recreation subzones which are mainly located along the coast in Southern District (Hong Kong Island) and the outlying islands. The secondary contact recreation subzones cover an area of approximately 67 km2, about 26% of the total area of the secondary contact recreation subzones of Hong Kong. In 2011, full compliance (100%) with the E. coli objective was attained in the secondary contact recreation subzones. There are 21 gazetted beaches located in this WCZ : 12 on Hong Kong Island, five on Lantau Island, two on Lamma Island and two on Cheung Chau. In 2011, all 21 gazetted beaches in the southern waters complied with the water quality objective for swimming and most beaches (except the Silvermine Bay Beach on Lantau Island) were ranked as “Good” during the bathing season from March to October.

Silvermine Bay Beach on Lantau Island

29


Sediment Quality and Levels of Toxic Substances in Hong Kong Sea bottom sediments are the ultimate sink of pollutants in the marine environment, and are also home to a wide variety of benthic organisms. The quality of marine sediments can therefore reflect the health of the marine environment as a whole. Since the implementation of the marine monitoring programme in 1986, elevated levels of selected heavy metals, in particular copper and silver, could often be detected in the sediments of Victoria Harbour and Tsuen Wan Bay. This was attributed to previous industrial pollution sources in the 60s to 80s before pollution control legislation was introduced. Nevertheless, through EPD’s efforts in enforcing relevant pollution control ordinances, i.e. the Water Pollution Control Ordinance and Waste Disposal Ordinance, and the removal of various industrial pollution sources, we observe a general decreasing trend of total metals in sediments at stations in Victoria Harbour such as VS6 since 1991.

Sediment sample collected by sediment grab

Note : Total metals include cadmium, chromium, copper, mercury, nickel, lead, silver

and zinc

30


With regard to trace organic pollutants such as polychlorinated biphenyls (PCBs), they were generally present at low concentrations except for one station in western Victoria Harbour (VS6). The higher levels of PCB at VS6 could be related to the discharges from industries in the past as well as contamination from the waste incineration facility in Kennedy Town which ceased operation in 1993 and was demolished in 2007. Similar to metals, a gradual decreasing trend of total PCBs in sediment could also be observed at VS6 in 2011.

Note : Total PCBs were calculated based on the definition in the 2002 Technical Circular

‘ETWB (W) No. 34/2002 Management of Dredged / Excavated Sediment’ The EPD has been conducting a toxic substances monitoring programme since 2004 based on three-year cycles. The first two years of the cycle (i.e. 2004-2005 and 2007-2008) would focus on samples collected from the natural marine environment, i.e. water, sediment, biota and the third year (i.e. 2006 and 2009) on potential pollution sources as well as rivers. For the first two years of each cycle, 10 marine water and 20 sediment as well as a number of marine biota samples would be collected from different locations throughout the territory. So far, two cycles of sampling in 2004-2009 had been completed. The results show that the levels of toxic substances in the Hong Kong marine environment were generally low as compared with other areas of the Pearl River Estuary, and were largely within the range reported for coastal waters

31


of the Mainland and other countries. In general, the levels of toxic substances in marine water, sediment and biota met local and international standards i.e. USA, Canada, European Union, Australia and Japan for the protection of marine life and human health. Nevertheless, elevated levels of some chemicals such as heavy metals were found in marine sediments at some localised “hot spots” areas associated with historical pollution, as well as nonylphenol in sediment at areas near the discharge points of the preliminary treatment plants in central Victoria Harbour. The details of the programme and the summary of the findings can be found at the following link: http://www.epd.gov.hk/epd/english/environmentinhk/water/marine_quality/Tox_details.html

32


Typhoon Shelters in Hong Kong Typhoon shelters in Hong Kong are used by small to medium vessels as protection against strong winds and rough sea conditions particularly during the typhoon season. For this reason, typhoon shelters are often semi-enclosed water bodies and vulnerable to pollution from both land and sea. Hong Kong has 17 typhoon shelters (TSs), marinas and dockyard. Some of these are located adjacent to populated residential and/or industrial areas, i.e. Causeway Bay TS and Kwun Tong TS. Others are located in outlying islands or far away from the urban areas, i.e. Cheung Chau TS and Shuen Wan TS. In general, the water quality of all typhoon shelters in Hong Kong was improving in the last decade.

Aldrich Bay Typhoon Shelter

in Hong Kong Island

In 2011, the EPD monitored the water quality of the 17 typhoon shelters, marinas and dockyard around Hong Kong. Same as 2010, the three typhoon shelters located in Sai Kung, namely Yim Tin Tsai TS, Hebe Haven TS and Sai Kung TS had the lowest TIN levels (0.07 - 0.10 mg/L) and E. coli counts (2 - 17 cfu/100mL) in 2011. In 2011, the water quality of typhoon shelters in Victoria Harbour, i.e. Kwun Tong TS, Causeway Bay TS and New Yau Ma Tei TS, was also generally poorer in terms of TIN levels (0.45 – 1.09 mg/L) and E. coli counts (1200-2000 cfu/100mL) as compared with those located in outlying islands which were far away from the urban areas. Regarding sediment quality, the sediments of typhoon shelters located in Victoria Harbour were often contaminated by heavy metals due to historical discharges from the nearby industries. During the period from 2007-2011, the sediment in Kwun Tong TS recorded the highest levels of total heavy metals (i.e. cadmium, chromium, copper, mercury, nickel, lead, silver and zinc) amongst the typhoon shelters in Hong Kong.

For trace organic pollutants, To Kwa Wan TS had the highest level of polyaromatic hydrocarbons (PAHs) as compared with other typhoon shelters in 2011. The presence of PAHs in To Kwa Wan TS could be attributed to contamination from the old industrial areas in San Po Kong and possibly the old Kai Tak Airport which ceased operation in July 1998.

33


Phytoplankton and Red Tides in Hong Kong

Red tide or Harmful Algal Bloom (HAB) is a phenomenon in which some micro-algae (e.g. phytoplankton) accumulate rapidly in a water body and result in discoloration of the surface water. Some HABs can also cause harm to other marine organisms through the production of toxins. There are a number of factors which may contribute to the formation of red tides. Apart from nutrients (e.g. nitrogen, phosphorus and silica), red tide formations are strongly affected by physical factors such as sunlight, temperature, wind, etc. Red tides can deplete oxygen in the water when the dead algae decompose and cause massive fish kills. Some phytoplankton species may also produce toxins resulting in the contamination of seafood. Phytoplankton and red tide monitoring therefore forms an essential part of water quality management. Examination of phytoplankton samples

using Scanning Electron Microscopy The EPD conducts monitoring of phytoplankton at 25 stations covering nine WCZs in the territory. Monthly

samples are analyzed, and we examine the trends and changes in phytoplankton with regard to their composition and densities.

A total of 109 phytoplankton species was recorded in Hong Kong waters in 2011. Of these, 61 were diatoms (56%), 34 were dinoflagellates (31%) and 14 were from other minor algal groups (13%). Of the samples examined in 2011, diatoms constituted the largest component of phytoplankton in terms of both species number and cell density. The most dominant diatom species were Chaetoceros spp. which constituted 8-43% of the diatom population in the Port Shelter, Tolo Harbour and Channel, Deep Bay, Western Buffer, Mirs Bay, Victoria Harbour, Southern and North Western WCZs. The most abundant dinoflagellate species were Gymnodinium spp. comprising 39-67% of the dinoflagellate populations in all the WCZs. In 2011, phytoplankton densities were generally higher at some stations in the Tolo Harbour and Channel WCZ than those in others.

34


35

Percentage contribution of phytoplankton groups to the total number of species in the nine Water Control Zones (2011)

54% Diatom

32% Dinoflagellate14% Others

Port Shelter WCZ

53% Diatom


57% Diatom


Mirs Bay WCZ

59% Diatom

28% Dinoflagellate

13% Others

Western Buffer WCZ

58% Diatom

29% Dinoflagellate

13% Others

Southern WCZ

54% Diatom



54% Diatom


Eastern Buffer WCZ

50% Diatom

31% Dinoflagellate

19% Others

Deep Bay WCZ

57% Diatom

28% Dinoflagellate

15% Others

North Western WCZ

Shenzhen

New Territories

Hong Kong Island

Kowloon

N

LantauIsland

Tolo Harbour & Channel WCZ

Note : Others refer to minor phytoplankton groups which mainly include Cyanophyta and Chrysophyta.

Algal blooms (red tides) are natural phenomena which occur seasonally in both polluted and unpolluted waters. In Hong Kong, red tides occur more commonly in semi-enclosed bays (e.g. Tolo Harbour) with low tidal flushing rate. A total of 840 red tide incidents were recorded in Hong Kong waters between 1980 and 2011. Locally, red tides occur more frequently in the eastern (72%) and southern (18%) waters. From 1980 to 2011, some 327 of the 840 red tides (39%) occurred in the Tolo Harbour and Channel WCZ, and 151 (18%) in the Mirs Bay WCZ, 127 (15%) in the Port Shelter WCZ and 147 (18%) in the Southern WCZ. The most common red tide forming species in Hong Kong waters was the dinoflagellate Noctiluca scintillans, which accounted for about 29% of the reported red tides between 1980 and 2011. Historically, red tides increased significantly in the 80s and reached a peak in 1988, when a total of 88 incidents were reported. Since the mid 90s, red tides fluctuated between 10 and 45 incidents per year. In 2011, a total of 17 red tides were recorded in Hong Kong waters. Of these, five occurred in the Tolo Harbour and Channel WCZ, five in the Southern WCZ, three in the Port Shelter WCZ, three in the Mirs Bay WCZ and one in the North Western WCZ. These incidents involved 11 red tide species and their distribution is set out below. Most of them are non-toxic species commonly found in Hong Kong waters. Alexandrium catenella is known to be a toxic species locally and this species contains Paralytic Shellfish Poisoning (PSP) which can cause massive fish kills. Both Cochlodinium


polykrikoides and Takayama pulchella are also known to be harmful to fish based on overseas studies. However, no fish kill was recorded in Hong Kong waters in 2011. Distribution of red tide species in 2011 Tolo Harbour and Channel WCZ: Chaetoceros socialis, Noctiluca scintillans, Akashiwo sanguinea, Takayama pulchella Southern WCZ: Akashiwo sanguinea, Noctiluca scintillans, Chaetoceros salsugineum, Protopolykrikos distortus, Phaeocystis globosa Port Shelter WCZ: Akashiwo sanguinea, Cochlodinium polykrikoides, Gonyaulax polygramma Mirs Bay WCZ: Mesodinium rubrum, Alexandrium catenella, Noctiluca scintillans North Western WCZ: Noctiluca scintillans

Frequency of red tides in 10 Water Control Zones in Hong Kong, 1980 - 2011

Shenzhen

New Territories

Hong Kong Island

Kowloon

N

0

5

10

15

20

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Mirs Bay WCZ

05

1015202530354045

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Tolo Harbour & Channel WCZ

0

5

10

15

20

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Port Shelter WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Eastern Buffer WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Junk Bay WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10


0

5

10

15

20

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Southern WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Western Buffer WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

North Western WCZ

0

2

4

6

8

10

80 82 84 86 88 90 92 94 96 98 00 02 04 06 08 10

Deep Bay WCZ

Source: Agriculture, Fisheries and Conservation Department and Environmental Protection Department

LantauIsland

36

05

10km

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g K

ong

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nd

Kow

loon

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au Is

land

N

22°10

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113°

50’E

114°

00’E

114°

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114°

20’E

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ritor

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2 3 4 5 6 7 8 9

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7S

Appendix A

MARINE WATER QUALITY IN HONG KONG IN 2011 A - 1

Shen

zhen

114°

20’E

114°

30’E

114°

00’E

113°

50’E

22°30

’N22

°30

’N

22°20

’N

114°

10’E

The

Wat

er C

ontr

ol Z

ones

in H

ong

Kong

(Sou

rce:

Env

ironm

ent B

urea

u–Pl

an N

o. W

P/W

P4/7

5, O

ct 1

999)

Appendix A


N

05

10km

DM

3

DM

4

DM

5

NM

5

NM

3

NM

6

NM

8

NM

2N

M1

WM

4

WM

3 WM

2

WM

1

SM10

SM11

SM9

SM13

SM17

SM20

SM18

SM7

SM6

SM5

SM4SM

3SM

2

SM1

SM19

VM12

VM8

VM15

VM7

VM6

VM5

VM4

VM2

JM3

JM4

EM1 EM

2 EM3

MM

8

MM

13

MM

14

PM11

PM8

PM9

PM7

PM6

Hon

g K

ong

Isla

nd

SM12

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°10

’N

New

Ter

ritor

ies

Kow

loon

MM

19

DM

1D

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Shen

zhen

VM14

PM3

MM

15

TM4

TM2

TM3

TM6

MM

16

PM2PM

1PM

4

TM5

TM7

TM8

MM

6MM

4

MM

2

MM

3

MM

1

MM

17

MM

7M

M5

VM1

114°

30’E

The

76 w

ater

qua

lity

mon

itorin

g st

atio

ns in

the

open

wat

ers

of H

ong

Kong

in 2

011

Lant

auIs

land

114°

20’E

114°

10’E

114°

00’E

113°

50’E

22°20

’N

22°30

’N22

°30

’N

114°

30’E

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Mar

ine

wat

er q

ualit

y m

onito

ring

stat

ion

(mon

itore

d m

onth

ly)

Shen

zhen

Appendix A


05

10km

Shen

zhen

New

Ter

ritor

ies

Hon

g K

ong

Isla

nd

Kow

loon

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS5

SS6

SS4 SS3

SS2

SS1

VS1

0

VS6

VS5

VS3

JS2 E

S4 ES1 E

S2

MS8

MS1

3

MS1

4

PS6

PS5

PS3

TS2

TS3

TS4

TS5

MS6

MS1

6

MS1

5

MS1

7

MS7

MS5

MS4

MS2

MS3

MS1

Sed

imen

t mon

itorin

g st

atio

n (m

onito

red

twic

e a

year

)

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

nN

114°

20’E

114°

10’E

114°

00’E

113°

50’E

22°30

’N

22°20

’N

22°10

’N

22°30

’N

22°20

’N

22°10

’N

113°

50’E

114°

00’E

114°

10’E

114°

20’E

114°

30’E

114°

30’E

The

45 s

edim

ent m

onito

ring

stat

ions

in th

e op

en w

ater

s of

Hon

g Ko

ng in

200

8

Lant

au Is

land

VS9

05

10km

New

Ter

ritor

ies

Hon

g K

ong

Isla

nd

Kow

loon

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS5

SS6

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SS1

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0

VS6

VS5

VS3

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S4 ES1 E

S2

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3

MS1

4

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PS5

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TS2

TS3

TS4

TS5

MS6

MS1

6

MS1

5

MS1

7

MS7

MS5

MS4

MS2

MS3

MS1

N

22°20

’N

22°10

’N

113°

50’E

114°

00’E

114°

10’E

114°

20’E

114°

30’E

The

45 s

edim

ent m

onito

ring

stat

ions

in th

e op

en w

ater

s of

Hon

g Ko

ng in

201

1

Lant

au Is

land

VS9

Shen

zhen

Sed

imen

t mon

itorin

g st

atio

n (m

onito

red

twic

e a

year

)

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ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

114°

20’E

114°

10’E

114°

00’E

113°

50’E

22°30

’N

22°20

’N

22°10

’N

22°30

’N

114°

30’E

Appendix A


05

10km

Kow

loon

1617

18

16

2

8

14

10

13

12

5

11

9

N

3

15

4

7

New

Ter

ritor

ies

Hon

g K

ong

Isla

nd

113°

50’E

114°

00’E

114°

10’E

22°30

’N

22°20

’N

22°10

’N

Mon

itorin

g St

atio

ns

1. T

uen

Mun

2.

Che

ung

Cha

u3.

Hei

Ling

Cha

u4.

Abe

rdee

n (S

outh

)5.

Abe

rdee

n (W

est)

6. R

ambl

er C

hann

el7.

Gov

ernm

ent D

ocky

ard

8. Y

au M

a Te

i9.

Cau

sew

ay B

ay10

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Kw

a W

an

11. K

wun

Ton

g 12

. Sam

Ka

Tsue

n13

. Ald

rich

Bay

(Sha

u K

ei W

an)

14. C

hai W

an15

. Heb

e H

aven

16. S

ai K

ung

17. Y

im T

in T

sai

18. S

huen

Wan

NT1

ST1

ST3

W

T1W

T3V

T8V

T12

VT1

0V

T2V

T11

VT4

VT3

E

T2E

T1P

T4P

T2P

T3TT

1

NS

5S

S7

SS

8

VS

17V

S21

VS

19V

S12

VS

20V

S14

VS

13E

S5

ES

3P

S4

PS

2TS

7

Typh

oon

Shel

ters

Wat

erS

edim

ent

Wat

er q

ualit

y m

onito

ring

stat

ions

mon

itore

d on

ce e

very

two

mon

ths

Sed

imen

t mon

itorin

g st

atio

ns m

onito

red

twic

e a

year

Sed

imen

t rem

oved

by

prev

ious

dre

dgin

g*

* * *

Lant

au Is

land

Shen

zhen

114°

20’E

114°

10’E

114°

00’E

113°

50’E

22°30

’N

114°

30’E

The

18 w

ater

qua

lity

mon

itorin

g st

atio

ns a

nd 1

5 se

dim

ent m

onito

ring

stat

ions

in th

e ty

phoo

n sh

elte

rs o

f H

ong

Kong

in 2

011

Appendix A


Depth ( m)Water Sediment Latitude Longitude approx.TM2 22° 24.744' N 114° 13.085' E 4TM3 TS3 22° 26.857' N 114° 12.181' E 7TM4 TS2 22° 25.964' N 114° 13.176' E 8TM5 22° 27.426' N 114° 13.456' E 4TM6 TS4 22° 26.631' N 114° 14.506' E 12TM7 22° 26.907' N 114° 16.057' E 11TM8 TS5 22° 28.392' N 114° 18.003' E 22*TT1 *TS7 22° 27.270' N 114° 12.717' E 6SM1 SS1 22° 12.738' N 114° 13.885' E 14SM2 SS2 22° 13.447' N 114° 10.691' E 14SM3 22° 13.527' N 114° 8.980' E 33SM4 22° 12.758' N 114° 8.315' E 11SM5 22° 12.141' N 114° 6.728' E 8SM6 SS3 22° 11.500' N 114° 4.743' E 14SM7 SS4 22° 13.740' N 114° 4.473' E 8SM9 22° 16.420' N 114° 4.024' E 8SM10 22° 18.125' N 114° 1.919' E 5SM11 SS5 22° 15.443' N 114° 1.078' E 8SM12 22° 12.861' N 114° 0.869' E 7SM13 SS6 22° 12.957' N 113° 57.724' E 6SM17 22° 9.211' N 113° 57.727' E 12SM18 22° 9.211' N 114° 4.746' E 21SM19 22° 9.211' N 114° 13.077' E 24SM20 22° 10.448' N 113° 52.932' E 7*ST1 *SS7 22° 12.517' N 114° 1.493' E 5*ST3 *SS8 22° 14.734' N 114° 1.928' E 6PM1 22° 23.242' N 114° 17.145' E 6PM2 22° 22.643' N 114° 16.687' E 8PM3 PS3 22° 22.156' N 114° 16.910' E 13PM4 22° 22.940' N 114° 18.819' E 6PM6 22° 21.102' N 114° 16.213' E 11PM7 PS5 22° 20.453' N 114° 17.703' E 17PM8 PS6 22° 19.168' N 114° 18.745' E 20PM9 22° 20.529' N 114° 20.196' E 15PM11 22° 19.240' N 114° 20.163' E 21*PT2 22° 22.798' N 114° 16.540' E 3*PT3 *PS2 22° 22.790' N 114° 18.400' E 6*PT4 *PS4 22° 21.728' N 114° 15.879' E 5JM3 JS2 22° 17.490' N 114° 15.657' E 10JM4 22° 16.873' N 114° 15.378' E 16DM1 DS1 22° 29.769' N 114° 0.644' E 2DM2 22° 30.454' N 113° 59.549' E 2DM3 DS2 22° 28.600' N 113° 57.551' E 3DM4 DS3 22° 27.335' N 113° 55.937' E 4DM5 DS4 22° 25.561' N 113° 53.388' E 8NM1 22° 20.877' N 114° 1.286' E 34NM2 NS2 22° 21.130' N 113° 58.815' E 11NM3 NS3 22° 21.324' N 113° 56.783' E 14NM5 NS4 22° 23.051' N 113° 53.972' E 20NM6 NS6 22° 19.281' N 113° 53.908' E 5NM8 22° 16.695' N 113° 51.886' E 8*NT1 *NS5 22° 22.475' N 113° 58.353' E 4MM1 MS1 22° 32.984' N 114° 14.271' E 6MM2 MS2 22° 32.626' N 114° 16.648' E 11MM3 MS3 22° 33.714' N 114° 18.615' E 16MM4 MS4 22° 33.817' N 114° 21.483' E 18MM5 MS5 22° 31.233' N 114° 23.633' E 20MM6 MS6 22° 27.334' N 114° 20.997' E 12MM7 MS7 22° 31.409' N 114° 17.824' E 13MM8 MS8 22° 12.021' N 114° 19.345' E 31MM13 MS13 22° 13.000' N 114° 26.920' E 28MM14 MS14 22° 17.560' N 114° 26.920' E 25MM15 MS15 22° 22.120' N 114° 26.920' E 24MM16 MS16 22° 26.670' N 114° 26.920' E 22MM17 MS17 22° 30.192' N 114° 20.960' E 17MM19 22° 15.921' N 114° 19.411' E 28WM1 WS2 22° 15.044' N 114° 7.363' E 35WM2 22° 17.074' N 114° 5.730' E 13WM3 WS1 22° 19.203' N 114° 5.826' E 20WM4 22° 20.940' N 114° 4.256' E 26*WT1 22° 14.494' N 114° 9.737' E 7*WT3 22° 14.811' N 114° 8.918' E 10EM1 ES4 22° 16.506' N 114° 15.335' E 16EM2 ES1 22° 15.732' N 114° 15.971' E 21EM3 ES2 22° 14.237' N 114° 16.144' E 21*ET1 *ES3 22° 16.203' N 114° 14.624' E 6*ET2 *ES5 22° 17.078' N 114° 13.783' E 12VM1 22° 17.280' N 114° 13.839' E 38VM2 22° 17.862' N 114° 12.619' E 12

VS3 22° 17.631' N 114° 12.526' E 8VM4 22° 17.860' N 114° 11.654' E 12VM5 22° 17.266' N 114° 10.510' E 11

VS5 22° 17.077' N 114° 10.600' E 8VM6 22° 17.371' N 114° 9.665' E 14VM7 VS6 22° 17.771' N 114° 8.416' E 10VM8 22° 17.564' N 114° 7.175' E 11VM12 VS9 22° 19.757' N 114° 7.278' E 14VM14 VS10 22° 21.935' N 114° 6.527' E 11VM15 22° 18.579' N 114° 8.539' E 13*VT2 *VS12 22° 17.194' N 114° 11.304' E 5*VT3 *VS13 22° 17.448' N 114° 14.250' E 5*VT4 *VS14 22° 18.734' N 114° 12.814' E 6*VT8 *VS17 22° 21.360' N 114° 6.867' E 5*VT10 *VS19 22° 18.590' N 114° 9.430' E 5*VT11 *VS20 22° 18.981' N 114° 11.814' E 6*VT12 *VS21 22° 19.429' N 114° 8.587' E 5

Note : 1. All locations are based on WGS84 datum

2. Water quality and sediment monitor ing stations in typhoon shelters aremarked with an aster isk *

Location of marine water and sediment monitoring stations

Water C ontro l ZoneStat ion Locat ion

Southern Water

Tolo Harbour and Channel

Eastern Buffer

Victoria Harbour

Port Shelter

Western Buffer

Junk Bay

Deep Bay

North Western

Mirs Bay

Appendix A

MARINE WATER QUALITY IN HONG KONG IN 2011 A -6

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Appendix A


Parameter Water Quality Objective Water Control Zone (WCZ) / Part(s) of zone /Subzone to which the WQO applies

There should be no objectionable odours ordiscolouration of the water

Tarry residues, floating wood, articles made ofglass, plastic, rubber or of any other substancesshould be absentMineral oil should not be visible on the surface.Surfactants should not give rise to a lastingfoam.There should be no recognisable sewage-deriveddebris.

Floating, submerged and semi-submergedobjects of a size likely to interfere with the freemovement of vessels, or cause damage tovessels, should be absent.

The waters should not contain substances whichsettle to form objectionable deposits.

Dissolved Oxygen(bottom) Not less than 2 mg/L for 90% of samples ; Marine waters of all WCZs except Tolo Harbour & Channel WCZ

Dissolved Oxygen(Depth-averaged) Not less than 4 mg/L for 90% of samples ; Marine waters of all WCZs except Tolo Harbour & Channel WCZ

Not less than 2mg/L Harbour Subzone in Tolo Harbour & Channel WCZ

Not less than 3mg/L Buffer Subzone in Tolo Harbour & Channel WCZ

Not less than 4mg/L Channel Subzone in Tolo Harbour & Channel WCZ

Dissolved Oxygen(the remainder of the water column :means surface to 2m above bottom)

Not less than 4mg/L Harbour Subzone and Buffer Subzone in Tolo Harbour & ChannelWCZ

Dissolved Oxygen(all depths) Not less than 4mg/L Channel Subzone in Tolo Harbour & Channel WCZ

Annual mean depth-averaged total inorganicnitrogen not to exceed 0.1 mg/L Marine waters of Southern WCZ and Port Shelter WCZ

Annual mean depth-averaged total inorganicnitrogen not to exceed 0.3 mg/L

Marine waters of Mirs Bay WCZ, Junk Bay WCZ, North Western WCZ(Castle Peak Subzone)


Marine waters of Eastern Buffer WCZ, Western Buffer WCZ, VictoriaHarbour WCZ.


Marine waters of Deep Bay WCZ (Outer Subzone) and North WesternWCZ (Whole zone except Castle Peak Subzone).

Annual mean depth-averaged total inorganicnitrogen not to exceed 0.7 mg/L Marine waters of Deep Bay WCZ (Inner Subzone)

Unionised ammonia Annual mean not to exceed 0.021 mg/L All WCZs (whole zone) except Tolo Harbour & Channel WCZ

Annual geometric mean not to exceed610 cfu/100mL

Secondary contact recreation subzones in Tolo Habour & ChannelWCZ, Southern WCZ, Port Shelter WCZ, Mirs Bay WCZ, Deep BayWCZ, North Western WCZ, Western Buffer WCZ.

Annual geometric mean not to exceed610 cfu/100mL

Fish culture subzones in Tolo Habour & Channel WCZ, SouthernWCZ, Port Shelter WCZ, Junk Bay, Mirs Bay WCZ, Deep Bay WCZ,Eastern Buffer WCZ, Western Buffer WCZ.

To be in the range 6.5 - 8.5, change due towaste discharge not to exceed 0.2 Marine waters of all WCZs except Tolo Harbour & Channel WCZ

Change due to waste discharge not to begreater than ±0.5 Harbour Subzone in Tolo Harbour & Channel WCZ

Change due to waste discharge not to begreater than ±0.3 Buffer Subzone in Tolo Harbour & Channel WCZ

Change due to waste discharge not to begreater than ±0.1 Channel Subzone in Tolo Harbour & Channel WCZ

Change due to waste discharge not toexceed 10% of natural ambient level All WCZs (Whole zone) except Tolo Harbour & Channel WCZ

Change due to waste discharge not to begreater than ±3% Tolo Harbour & Channel WCZ

Change due to waste discharge not to exceed 2°C All WCZs (Whole zone) except Tolo Harbour & Channel WCZChange due to waste discharge not to exceed 1°C Tolo Harbour & Channel WCZ

Suspended solidsWaste discharge not to raise the natural ambientlevel by 30% nor cause the accumulation ofsuspended solids which may adversely affectaquatic communities

Marine waters of all WCZs except Tolo Harbour & Channel WCZ

Toxicants Not to be present at levels producingsignificant toxic effect All WCZs (Whole zone)

Not to exceed 20mg/m3 (µg/L) calculated asrunning arithmetic mean of 5 dailymeasurements for any location and depth

Harbour Subzone in Tolo Harbour & Channel WCZ


Buffer Subzone in Tolo Harbour & Channel WCZ


Channel Subzone in Tolo Harbour & Channel WCZ

Temperature

Chlorophyll-a

Nutrients

E. coli

pH

Salinity

Summary of Water Quality Objectives (WQOs) for marine waters of Hong Kong

Aesthetic Appearance All WCZs (whole zone)

Dissolved Oxygen(bottom)

Appendix A


ContaminantsLower Chemical

Exceedance Leve l(LCEL)

Upper ChemicalExceedance Leve l

(UCEL)

Metals (mg/kg dry we ight)

Cadmium (Cd) 1.5 4

Chromium (Cr) 80 160

Copper (Cu) 65 110

Mercury (Hg) 0.5 1

Nickel (Ni) 2 40 40

Lead (Pb) 75 110

Silver (Ag) 1 2

Zinc (Zn) 200 270

Metalloid (mg/kg dry we ight)

Arsenic (As) 12 42

Organic-PAHs (µg/kg dry we ight)

Low Molecular Weight PAHs 3 550 3160

High Molecular Weight PAHs 4 1700 9600

Organic-non-PAHs (µg/kg dry we ight)

Total PCBs 23 180

Organometallics (mg TBT/L in Interstitial water)

Tributyltin 2 0.15 0.15Footnote: 1

2

34

5 Total PCBs include 18 congeners: PCB 8, 18, 28, 44, 52, 66, 77, 101, 105, 118, 126, 128, 138, 153, 169, 170, 180, 187.

Sediment Quality Criteria for the Classification of Sediments1

The table is extracted from Appendix A of WBTC (W) No. 34/2002 Management of Dredged / Excavated Sediment(http://www.devb-wb.gov.hk).When the LCEL and UCEL for a contaminant are the same, the contaminant level is considered to have exceeded UCEL if it isgreater than the value shown.Low molecular weight PAHs include acenaphthene, acenaphthylene, anthracene, fluorene, naphthalene, and phenanthrene.High molecular weight PAHs include benzo[a]anthracene, benzo[a]pyrene, chrysene, dibenzo[a,h]anthracene, fluoranthene,pyrene, benzo[b]fluoranthene, benzo[k]fluoranthene, indeno[1,2,3-c,d]pyrene and benzo[g,h,i]perylene.

Appendix A


Unit ReportingLimit

SamplingDepth Standard Method / Techniques used 20 Analysed by

Temperature1 °C 0.1 Depth Profiling10 Instrumental (thermistor), SEACAT19+ CTD and Water Quality Profiler MMT/EPD15

Salinity 1,8 - 0.1 Depth Profiling Instrumental (electrical conductivity), SEACAT19+ CTD and Water QualityProfiler MMT/EPD

mg/L 0.1% saturation 9 1

Turbidity2 NTU 0.1 Depth Profiling Instrumental (nephelometric / infrared back scattering), OBS-3 turbidity sensorlinked to SEACAT 19+ CTD and Water Quality Profiler MMT/EPD

pH1 - 0.1 Depth Profiling Instrumental (electrodemetric), SBE18 pH sensor linked to SEACAT19 + CTDand Water Quality Profiler MMT/EPD

Secchi Disc Depth2 m 0.1 --- Manual MMT/EPDSuspended Solids2 mg/L 0.5 S,M,B11 In-house method GL-PH-23 based on APHA 20ed. 2540D (weighing) GL18

Volatile Suspended Solids3 mg/L 0.5 S,M,B In-house method GL-PH-23 based on APHA 20ed. 2540E (weighing) GL

5-day Biochemical OxygenDemand (BOD5)4 mg/L 0.1 S,M,B In-house method based on APHA 20th ed. 5210B EML/EPD16

Ammonia Nitrogen5 mg/L 0.005 S,M,B In-house method GL-IN-15 based on ASTM D3590-89 B (FIA) GLUnionised Ammonia5 mg/L 0.001 S,M,B By calculation12 MMT/EPDNitrite Nitrogen5 mg/L 0.002 S,M,B In-house method GL-IN-18 based on APHA 20ed. 4500-NO2- B (FIA) GLNitrate Nitrogen5 mg/L 0.002 S,M,B In-house method GL-IN-18 based on APHA 20ed. 4500-NO3- F & I (FIA) GLTotal Inorganic Nitrogen5 mg/L 0.01 S,M,B By calculation13 MMT/EPDTotal Kjeldahl Nitrogen5

(soluble; soluble & particulate)mg/L 0.05 S,M,B In-house methods GL-IN-14 and GL-IN-15 based on ASTM D3590-89 B (FIA) GL

Total Nitrogen5 mg/L 0.05 S,M,B By calculation13 MMT/EPDOrthophosphate Phosphorus5 mg/L 0.002 S,M,B In-house method GL-IN-16 based on APHA 20ed 4500-P G (FIA) GLTotal Phosphorus5

(soluble; soluble & particulate)mg/L 0.02 S,M,B In-house methods GL-IN-14 and GL-IN-16 respectively based on ASTM D515-

88 B and APHA 20ed 4500-P G (FIA) GL

Silica (as SiO2)(soluble) 5

mg/L 0.05 S,M,B In-house method GL-IN-17 based on APHA 20ed. 4500-SiO2 C&E (FIA) GL

Chlorophyll-a 6 µg/L 0.2 S,M,B In-house method GL-OR-34 based on APHA 20ed. 10200H 2(spectrophotometric) GL

Escherichia coli(E. coli )7 cfu/100mL 1 S,M,B In-house method, membrane filtration with CHROMagar Liquid E. coli -

coliform culture14 EML/EPD

Faecal Coliforms7 cfu/100mL 1 S,M,B In-house method, membrane filtration with CHROMagar Liquid E. coli -coliform culture14 EML/EPD

Phytoplankton cell/mL 1 S In-house method, 10 ml settled sub-sample using plankton chamber andinverted microscope19 WSL/EPD17

Note: 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

ii) Utermohl, H. 1958. Zur Vervollkommung der Quantitativen Phytoplankton-Methodik. Mitt. Inter. Verein. Lim. Vol. 9, pp. 1-38.

Mention of brand names and commercial products does not constitute or imply endorsement or recommendation by the Environmental Protection Department.

EML/EPD - Environmental Microbiology Laboratory, Water Policy and Science Group, Environmental Protection Department.

WSL/EPD - Water Sciences Laboratory, Water Policy and Science Group, Environmental Protection Department

GL - Government Laboratory.

i) Lund, J.H., Kipling, C. and Le Cren, E.D. 1958. The inverted microscope method of estimating algal numbers, and the statistical basis of estimations by counting.Hydrobiologia Vol. 11, pp. 143-170.

Total Inorganic Nitrogen = Ammonia Nitrogen + Nitrite Nitrogen + Nitrate Nitrogen ;Total Nitrogen = Total Kjeldahl Nitrogen (soluble & particulate) + Nitrite Nitrogen + Nitrate Nitrogen

i) DoE, DHSS & PHLS (1983); The Bacteriological Examination of Drinking Water Supplies 1982, Sec.7.8 & 7.9;

ii) B.S.W. Ho and T.Y. Tam (1997), Enumeration of E. coli in environmental waters and wastewater using a chromogenic medium. Wat. Sci. Tech.Vol.35,No.11-12, pp.409-413; method adopted in 1997.MMT/EPD - Marine Monitoring Team, Water Policy and Science Group, Environmental Protection Department.

Depth profiling - continuous measurements at downcast are processed and presented at 1m intervals from 1m below the surface to 1m above the seabed

If water depth is 6m or above, sampling is taken at three depths during upcast: S - 1m below water surface; M - mid-depth of water column;B - 1m above seabed. If water depth is 4 to 5 m, "M" is skipped; If water depth is 3m or less, "M" and "B" are skip

i) Bower C.E. and Bidwell J.P. (1978), Ionization of ammonia in seawater: Effect of temperature, pH and salinity. J. Fish. Res. Board Can. Vol.35, pp.1012-1016;

ii) K., Russo R.C. & et. al. (1975), Aqueous ammonia equilibrium calculations: effect of pH and temperature. J. Fish. Res. Board Can. Vol.32, pp.2379-2383

Indicate the amount of algal biomass in marine water

Sewage bacteria indicate the extent of faecal pollution in marine water

Measuring and reporting of Salinity (S) are based on the Practical Salinity Scale and International Equation of State of Seawater(UNESCO Technical Papers in Marine Science No. 30 (1981) ; No. 36 (1981) and No. 45 (1985))

Percent saturation of dissolved oxygen is calculated from dissolved oxygen in mg/L based on Weiss R.F. (1970);The solubility of nitrogen, oxygen and argon in water and seawater. Deep Sea Res. Vol. 17, pp.721-735

Low transparency and light penetration would affect aesthetic value and photosynthesis in marine water

Indicate the amount of particulate organic matters in marine water

Indicate the amount of organic pollutants in marine water

Major nutrients (nitrogen, phosphorus, silica) promoting algal growth in marine water

AggregateOrganicConstituents

Nutrients andInorganicConstituents

Biological andMicrobiologicalExamination

Indicate general oceanographic conditions of marine water

Summary of marine water quality parameters

Parameter

Physical andAggregateProperties

Dissolved Oxygen1 Depth Profiling Instrumental (membrane elelectrode), SBE23Y dissolved oxygen sensor linkedto SEACAT19+ CTD and Water Quality Profiler MMT/EPD

Appendix A


Unit 2 ReportingLimit Standard Method / Techniques used 8 Analysed

by

Particle Size Fractionation % w/w 1 In-house method, sieving and weighing ; 8 fractions : >4000 µm, <4000µm, <2000µm, <1000µm,<500µm, <250µm, <125µm and <63µm MMT/EPD 6

Electrochemical Potential 4 mV 1 Instrumental, Orion Model 250A pH/Redox Meter (electrodemetric) MMT/EPDTotal Solids (TS) 3 % w/w 0.1 In-house method GL-PH-22 based on APHA 20ed 2540G (weighing) GL 7

Total Volatile Solids (TVS) 3 % TS 0.1 In-house method GL-PH-22 based on APHA 20ed 2540G (weighing) GLDry Wet Ratio - 0.01 In-house method GL-PH-22 based on APHA 20ed 2540G (weighing) GLChemical Oxygen Demand(COD) mg/kg 2 In-house method GL-OR-47 based on ASTM D1252-00 A (open reflux) GL

Total Carbon (TC) % w/w 0.1 In-house method GL-OR-33 based on APHA 20ed 5310 B (combustion – IR) GLAmmonia Nitrogen (NH3-N) mg/kg 0.05 In-house method GL-IN-19 based on ASTM D3590-89 B (FIA) GL

Total Kjeldahl Nitrogen (TKN) mg/kg 0.5 In-house methods GL-IN-14 and GL-IN-15 based on ASTM D3590-89 B (FIA) GL

Total Phosphorus mg/kg 0.2 In-house methods GL-IN-14 and GL-IN-16 respectively based on ASTM D515-88 B andAPHA 20ed 4500-P G (FIA) GL

Total Sulphide mg/kg 0.2 In-house method GL-IN-45 based on APHA 20ed 4500-S2- A&D (spectrophotometric) GL

Total Cyanide mg/kg 0.1 In-house method GL-IN-44 based on APHA 20ed 4500-CN- A&E (distillation and amperometric) GL

Aluminium (Al) mg/kg 1 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Arsenic (As) mg/kg 0.1 In-house methods GL-TE-64 and GL-TE-66 based on USEPA method 6020 (ICP-MS) GL

Barium (Ba) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Boron (B) mg/kg 5 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Cadmium (Cd) mg/kg 0.1 In-house method GL-TE-64 based on USEPA method 6020 (ICP-MS) GL

Chromium (Cr) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Copper (Cu) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Iron (Fe) mg/kg 5 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Lead (Pb) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Manganese (Mn) mg/kg 1 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Mercury (Hg) mg/kg 0.05 In-house methods GL-TE-64 and GL-TE-66 based on USEPA method 6020 (ICP-MS) GL

Nickel (Ni) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Silver (Ag) mg/kg 0.2 In-house method GL-TE-64 based on USEPA method 6020 (ICP-MS) GL

Vanadium (V) mg/kg 0.1 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Zinc (Zn) mg/kg 0.2 In-house methods GL-TE-60 and GL-TE-64 respectively based on USEPA methods 6010B (ICP-AES)and 6020 (ICP-MS) GL

Polychlorinated Biphenyls(PCBs)18 PCB congeners : PCB 8, 18,28, 44, 52, 66, 77, 101, 105,118, 126, 128, 138, 153, 169,170, 180, 187

µg/kg 2In-house method GL-OR-25 based on Reference Method for the Analysis of PolychlorinatedBiphenyls, Environmental Protection Series: Report EPS 1/RM/31, March 1997, Environment Canada(GC-MS)

GL

Polyaromatic Hydrocarbons(PAHs) - Acenaphthene µg/kg 50 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Acenaphthylene µg/kg 50 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Naphthalene µg/kg 60 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Fluorene µg/kg 10 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Phenanthrene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Anthracene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Fluoranthene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Pyrene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Benzo(a )anthracene µg/kg 3 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Chrysene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Benzo(b )fluoranthene µg/kg 1 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Benzo(k )fluoranthene µg/kg 1 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Benzo(a )pyrene µg/kg 1 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Dibenzo(a,h )anthracene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Benzo(ghi )perylene µg/kg 1 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL - Indeno(1,2,3-cd )pyrene µg/kg 5 In-house method GL-OR-15 based on USEPA method 610, 1984 (UV-FLUO) GL

Note: 1

234

5

678

MMT/EPD - Marine Monitoring Team, Water Policy and Science Group, Environmental Protection Department.GL - Government Laboratory.Mention of brand names and commercial products does not constitute or imply endorsement or recommendation by the EnvironmentalProtection Department.

All parameters are reported on a dry weight basis unless otherwise stated.Determinants are reported on a wet weight basis.Electrochemical potential (Eh) is measured "on-site" at 3cm below the surface of freshly collected sediment samples (Reference :Handbook of Techniques for Aquatic Sediment Sampling. By A. Mudrock & S.D. MacKnight, 1994, CRC Press).

Digestion procedure for metals and metalloids in sediment follows Government Laboratory's in-house method GL-TE-51.

Nutrients andInorganicConstituents 3

Metals &Metalloids 5

Trace OrganicCompounds

Birge-Ekman (0.023sq.m) grab / Van Veen (0.1sq.m) grab / Smith-McIntyre (0.1sq.m) grab is employed to collect sediment samplesfrom the top 10cm of seabed.

Summary of marine sediment1 parameters

Parameter

Physical andAggregateProperties

AggregateOrganicConstituents 3

Appendix B

MARINE WATER QUALITY IN HONG KONG IN 2011 B - 1

22.3 x 17.4cm

Summary of water quality statistics for the Mirs Bay WCZ in 2011

Starling Inlet Port IslandParameter MM1 MM2 MM7 MM17 MM3 MM4 MM5

Number of samples 12 12 12 12 12 12 1223.5 23.2 23.1 22.4 22.7 22.5 22.4

(15.4 - 29.4) (15.1 - 29.1) (15.0 - 28.9) (14.7 - 28.6) (15.0 - 28.5) (14.7 - 28.4) (14.6 - 28.5)32.0 32.4 32.4 32.7 32.6 32.7 32.7

(30.8 - 33.1) (31.6 - 33.2) (31.7 - 33.2) (31.7 - 33.4) (31.4 - 33.4) (31.5 - 33.4) (31.6 - 33.5)6.6 6.5 6.5 6.3 6.2 6.3 6.3

(4.3 - 9.0) (4.0 - 8.7) (4.1 - 8.1) (3.4 - 7.9) (3.6 - 7.9) (3.9 - 7.9) (4.0 - 7.9)6.5 6.0 6.1 5.8 5.8 5.9 6.0

(4.2 - 10.0) (3.2 - 8.4) (3.0 - 8.2) (1.7 - 7.8) (1.8 - 7.9) (2.0 - 7.9) (3.3 - 7.9)93 90 90 86 86 86 87

(66 - 118) (61 - 114) (62 - 110) (50 - 103) (54 - 109) (58 - 112) (58 - 108)90 82 84 79 79 80 82

(64 - 130) (48 - 111) (45 - 107) (24 - 98) (25 - 99) (28 - 97) (46 - 97)8.0 8.0 8.0 8.0 8.0 8.0 8.0

(7.8 - 8.3) (7.9 - 8.3) (7.8 - 8.3) (7.8 - 8.3) (7.8 - 8.3) (7.8 - 8.3) (7.8 - 8.3)2.5 2.9 3.6 3.7 2.9 3.2 3.5

(1.5 - 3.3) (2.0 - 4.0) (2.0 - 5.0) (2.1 - 5.5) (2.0 - 4.1) (2.0 - 5.3) (2.0 - 5.3)2.1 2.9 1.2 1.6 3.0 2.0 2.0

(0.9 - 4.0) (0.6 - 18.3) (0.5 - 3.1) (0.9 - 4.2) (1.4 - 6.0) (0.7 - 3.8) (0.6 - 5.1)2.6 1.9 1.5 1.7 3.8 2.4 2.3

(1.2 - 5.1) (0.7 - 3.4) (0.6 - 3.8) (0.8 - 4.7) (1.8 - 7.0) (0.7 - 4.9) (<0.5 - 5.7)1.2 0.9 0.9 0.6 0.6 0.6 0.6

(0.3 - 1.8) (0.3 - 1.3) (0.6 - 1.6) (0.2 - 1.0) (0.2 - 1.0) (0.3 - 1.0) (0.3 - 1.4)0.070 0.055 0.050 0.044 0.048 0.046 0.040

(0.039 - 0.110) (0.029 - 0.110) (0.023 - 0.097) (0.017 - 0.103) (0.019 - 0.107) (0.014 - 0.105) (0.012 - 0.100)0.003 0.002 0.002 0.002 0.002 0.002 0.001

(0.001 - 0.007) (0.001 - 0.003) (<0.001 - 0.003) (<0.001 - 0.003) (<0.001 - 0.004) (<0.001 - 0.006) (<0.001 - 0.002)0.012 0.008 0.007 0.009 0.010 0.010 0.010

(<0.002 - 0.051) (<0.002 - 0.031) (<0.002 - 0.026) (<0.002 - 0.028) (<0.002 - 0.025) (<0.002 - 0.034) (<0.002 - 0.035)0.058 0.026 0.025 0.041 0.043 0.045 0.052

(0.003 - 0.160) (<0.002 - 0.137) (0.002 - 0.123) (0.003 - 0.163) (<0.002 - 0.147) (0.002 - 0.163) (<0.002 - 0.163) 0.14 0.09 0.08 0.09 0.10 0.10 0.10

(0.07 - 0.27) (0.04 - 0.22) (0.03 - 0.19) (0.04 - 0.21) (0.04 - 0.20) (0.06 - 0.21) (0.03 - 0.20)0.21 0.17 0.15 0.14 0.13 0.13 0.12

(0.17 - 0.24) (0.14 - 0.22) (0.13 - 0.23) (0.11 - 0.16) (0.10 - 0.18) (0.11 - 0.15) (0.10 - 0.17)0.28 0.21 0.19 0.19 0.19 0.19 0.19

(0.19 - 0.41) (0.16 - 0.34) (0.13 - 0.36) (0.13 - 0.32) (0.13 - 0.31) (0.14 - 0.32) (0.11 - 0.34)0.007 0.005 0.005 0.007 0.007 0.007 0.008

(0.003 - 0.014) (0.002 - 0.010) (<0.002 - 0.009) (0.003 - 0.014) (<0.002 - 0.012) (0.002 - 0.013) (0.002 - 0.013)0.03 0.02 0.02 0.02 0.02 0.02 0.02

(0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.02) (<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.03)0.52 0.44 0.43 0.53 0.57 0.60 0.61

(<0.05 - 1.00) (<0.05 - 0.92) (0.06 - 0.95) (0.08 - 1.20) (0.09 - 1.13) (0.10 - 1.15) (0.11 - 1.10)4.9 3.2 3.0 2.3 2.2 2.2 1.9

(0.9 - 8.9) (0.5 - 8.1) (0.8 - 9.3) (0.6 - 5.7) (0.4 - 7.5) (0.8 - 4.8) (0.7 - 4.5)15 2 1 1 1 1 1

(1 - 55) (<1 - 18) (<1 - 2) (<1 - 3) (<1 - 6) (<1 - 1) (<1 - 1)32 3 1 1 2 2 1

(2 - 220) (<1 - 90) (<1 - 2) (<1 - 4) (<1 - 51) (<1 - 5) (<1 - 9)

Note : 3. Data in brackets indicate the ranges.

Note : 1. Unless otherwise specified, data presented are depth-averaged (A) values calculated by taking the means of threeNote : 1. depths: Surface (S), Mid-depth (M), Bottom (B).

Note : 2. Data presented are annual arithmetic means of the depth-averaged results except for E. coli and faecal coliformsNote : 2. which are annual geometric means.

Crooked Island Mirs Bay North

Bottom

Bottom

Total Phosphorus (mg/L)

Silica (as SiO2) (mg/L)

pH

Total Kjeldahl Nitrogen (mg/L)

Total Nitrogen (mg/L)

Secchi Disc Depth (m)

Turbidity (NTU)

Suspended Solids (mg/L)

Faecal Coliforms (count/100mL)

E.coli (count/100mL)

Chlorophyll-a (µg/L)

5-day Biochemical Oxygen Demand (mg/L)

Orthophosphate Phosphorus (mg/L)

Total Inorganic Nitrogen (mg/L)

Unionised Ammonia (mg/L)

Nitrite Nitrogen (mg/L)

Nitrate Nitrogen (mg/L)

Ammonia Nitrogen (mg/L)

Temperature (℃)

Salinity

Dissolved Oxygen (mg/L)

Dissolved Oxygen (% Saturation)

Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Mirs Bay WCZ in 2011 (continued)

NinepinGroup

WaglanIsalnd

Mirs Bay(South) Long Harbour

Parameter MM19 MM8 MM13 MM14 MM15 MM16 MM6Number of samples 12 12 12 12 12 12 12

22.2 22.3 22.4 22.3 22.3 22.3 22.5(15.0 - 29.1) (14.9 - 28.9) (14.5 - 28.9) (14.8 - 29.0) (14.7 - 29.2) (15.0 - 29.4) (14.7 - 28.3)

33.1 33.1 33.0 33.2 33.1 32.9 32.5(31.8 - 34.0) (31.7 - 34.2) (31.6 - 34.2) (31.7 - 34.2) (31.6 - 34.1) (31.8 - 33.8) (31.6 - 33.2)

6.5 6.4 6.5 6.4 6.5 6.7 6.5(3.6 - 7.9) (3.3 - 7.6) (3.7 - 7.7) (3.7 - 7.7) (3.5 - 7.9) (3.9 - 8.6) (3.8 - 8.2)

5.9 6.0 6.0 6.1 6.2 6.1 6.2(2.7 - 7.9) (2.7 - 7.8) (3.1 - 7.8) (3.0 - 8.0) (3.0 - 8.0) (3.3 - 7.9) (2.9 - 8.3)

89 88 90 89 90 92 89(51 - 106) (47 - 103) (54 - 103) (53 - 108) (51 - 107) (57 - 114) (56 - 107)

81 82 82 83 84 84 85(37 - 96) (38 - 97) (43 - 96) (41 - 99) (42 - 101) (46 - 109) (42 - 107)

8.0 8.0 8.0 8.0 8.0 8.0 8.0(7.8 - 8.3) (7.8 - 8.2) (7.8 - 8.3) (7.8 - 8.2) (7.8 - 8.3) (7.8 - 8.3) (7.8 - 8.3)

3.3 3.7 3.8 3.7 4.6 5.0 3.9(1.6 - 6.0) (1.4 - 8.6) (2.0 - 7.0) (1.8 - 8.5) (2.4 - 8.2) (2.0 - 7.6) (2.0 - 5.3)

2.4 3.2 3.5 5.1 13.4 1.8 1.5(1.0 - 5.6) (1.5 - 5.9) (0.9 - 9.4) (0.9 - 23.6) (0.7 - 133.0) (0.5 - 4.3) (0.5 - 6.9)

2.7 3.8 3.5 4.3 2.6 2.2 2.1(0.9 - 7.5) (1.3 - 8.2) (0.7 - 9.6) (1.0 - 15.5) (0.7 - 6.6) (<0.5 - 6.4) (<0.5 - 9.3)

0.7 0.5 0.6 0.7 0.6 0.6 0.7(<0.1 - 1.0) (0.2 - 1.2) (0.2 - 1.7) (0.2 - 2.0) (0.2 - 1.2) (<0.1 - 1.2) (0.3 - 1.2)

0.028 0.028 0.029 0.027 0.027 0.028 0.046(0.009 - 0.069) (0.008 - 0.061) (0.009 - 0.069) (0.007 - 0.071) (0.009 - 0.070) (0.017 - 0.070) (0.022 - 0.091)

0.001 0.001 0.001 0.001 0.001 0.001 0.002(<0.001 - 0.002) (<0.001 - 0.003) (<0.001 - 0.003) (<0.001 - 0.002) (<0.001 - 0.002) (<0.001 - 0.002) (<0.001 - 0.003)

0.009 0.010 0.009 0.007 0.007 0.007 0.007(<0.002 - 0.027) (<0.002 - 0.024) (<0.002 - 0.019) (<0.002 - 0.021) (<0.002 - 0.027) (<0.002 - 0.024) (<0.002 - 0.031)

0.055 0.066 0.069 0.056 0.049 0.043 0.029(0.004 - 0.180) (<0.002 - 0.190) (0.002 - 0.210) (0.002 - 0.173) (<0.002 - 0.183) (0.002 - 0.163) (<0.002 - 0.137)

0.09 0.10 0.11 0.09 0.08 0.08 0.08(0.03 - 0.21) (0.03 - 0.22) (0.03 - 0.24) (0.02 - 0.20) (0.02 - 0.22) (0.02 - 0.20) (0.03 - 0.18)

0.12 0.14 0.13 0.13 0.11 0.13 0.14(0.05 - 0.22) (<0.05 - 0.25) (<0.05 - 0.23) (<0.05 - 0.24) (0.07 - 0.16) (0.08 - 0.19) (0.12 - 0.18)

0.19 0.21 0.21 0.19 0.17 0.18 0.18(0.07 - 0.32) (0.06 - 0.37) (0.06 - 0.36) (0.06 - 0.36) (0.08 - 0.29) (0.12 - 0.30) (0.12 - 0.31)

0.009 0.009 0.009 0.009 0.008 0.007 0.006(0.003 - 0.016) (0.003 - 0.017) (0.002 - 0.019) (0.003 - 0.016) (0.002 - 0.016) (0.003 - 0.015) (0.002 - 0.011)

0.02 0.02 0.03 0.02 0.02 0.02 0.02(<0.02 - 0.04) (<0.02 - 0.04) (<0.02 - 0.04) (<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.04) (<0.02 - 0.02)

0.61 0.66 0.63 0.63 0.58 0.57 0.44(0.16 - 1.30) (0.17 - 1.33) (0.16 - 1.40) (0.13 - 1.27) (0.11 - 1.27) (0.05 - 1.20) (0.11 - 0.99)

1.8 2.0 1.7 2.0 1.5 1.2 2.9(0.5 - 6.0) (0.4 - 6.4) (0.3 - 4.7) (0.3 - 6.7) (0.6 - 3.9) (0.6 - 2.1) (0.8 - 8.8)

1 1 1 1 1 1 1(<1 - 1) (<1 - 1) (<1 - 3) (<1 - 1) (<1 - 1) (<1 - 5) (<1 - 1)

1 1 1 1 1 1 1(<1 - 2) (<1 - 14) (<1 - 3) (<1 - 2) (<1 - 2) (<1 - 5) (<1 - 2)





Mirs Bay (Central)

Temperature (℃)

Salinity



Bottom

Bottom









pH






Turbidity (NTU)



Appendix B


Summary of water quality statistics for the Port Shelter WCZ in 2011

Hebe HavenParameter PM1 PM2 PM3 PM4 PM6

Number of samples 12 12 12 12 1223.3 23.1 22.6 23.1 22.8

(14.9 - 29.4) (15.0 - 29.0) (14.9 - 28.5) (14.9 - 28.4) (15.0 - 28.6)32.3 32.2 32.5 32.1 32.4

(30.2 - 33.4) (29.2 - 33.3) (30.6 - 33.5) (28.9 - 33.4) (31.3 - 33.4)7.2 6.8 6.8 7.1 6.6

(4.5 - 9.5) (4.4 - 9.1) (4.1 - 10.3) (4.5 - 10.7) (3.8 - 10.2)7.0 6.4 5.9 6.9 6.0

(4.3 - 10.5) (3.4 - 8.8) (1.9 - 9.4) (4.3 - 9.7) (2.2 - 9.8)100 94 94 98 90

(68 - 119) (66 - 114) (60 - 129) (68 - 136) (56 - 129)96 87 80 95 81

(66 - 130) (49 - 113) (26 - 120) (66 - 120) (31 - 121)8.1 8.0 8.1 8.1 8.0

(8.0 - 8.3) (7.9 - 8.2) (7.9 - 8.2) (7.9 - 8.3) (7.8 - 8.2)3.3 3.4 3.6 3.2 3.4

(2.2 - 5.3) (2.0 - 8.0) (2.2 - 6.2) (1.3 - 5.8) (2.0 - 5.6)1.1 1.4 0.9 1.4 1.4

(0.2 - 1.8) (0.2 - 2.7) (0.3 - 1.6) (0.3 - 4.1) (0.3 - 2.6)1.7 1.6 1.4 2.1 2.3

(<0.5 - 3.7) (0.5 - 4.9) (0.6 - 3.8) (0.7 - 4.2) (0.8 - 8.1)1.2 1.1 1.1 1.1 0.9

(0.6 - 3.4) (0.5 - 2.6) (0.2 - 3.5) (0.5 - 2.9) (0.5 - 1.6)0.038 0.043 0.039 0.040 0.050

(0.015 - 0.061) (0.018 - 0.064) (0.018 - 0.062) (0.017 - 0.067) (0.022 - 0.087)0.002 0.002 0.002 0.002 0.002

(<0.001 - 0.003) (<0.001 - 0.004) (<0.001 - 0.003) (<0.001 - 0.004) (<0.001 - 0.005)0.004 0.005 0.005 0.004 0.005

(<0.002 - 0.012) (<0.002 - 0.013) (<0.002 - 0.011) (<0.002 - 0.012) (<0.002 - 0.016)0.034 0.039 0.032 0.031 0.037

(<0.002 - 0.107) (0.002 - 0.120) (0.003 - 0.123) (<0.002 - 0.107) (0.007 - 0.137) 0.07 0.09 0.08 0.07 0.09

(0.02 - 0.17) (0.03 - 0.19) (0.03 - 0.18) (0.02 - 0.17) (0.04 - 0.23)0.15 0.17 0.18 0.16 0.16

(0.08 - 0.21) (0.10 - 0.23) (0.11 - 0.33) (0.08 - 0.25) (0.07 - 0.22)0.19 0.22 0.22 0.19 0.20

(0.12 - 0.31) (0.14 - 0.35) (0.15 - 0.33) (0.10 - 0.29) (0.08 - 0.32)0.006 0.006 0.006 0.005 0.007

(<0.002 - 0.010) (<0.002 - 0.013) (<0.002 - 0.011) (<0.002 - 0.011) (<0.002 - 0.013)0.02 0.02 0.02 0.02 0.02

(<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.02) (<0.02 - 0.03)0.51 0.53 0.47 0.57 0.62

(0.06 - 0.98) (0.07 - 0.99) (0.09 - 1.00) (0.10 - 0.97) (0.13 - 1.13)4.9 4.6 4.4 3.6 3.5

(0.7 - 10.7) (0.7 - 11.3) (0.6 - 14.5) (0.8 - 10.4) (1.0 - 10.7)1 4 1 2 2

(<1 - 23) (<1 - 62) (<1 - 28) (<1 - 69) (<1 - 23)2 19 3 3 4

(<1 - 74) (1 - 380) (<1 - 61) (<1 - 420) (<1 - 94)








Turbidity (NTU)










Bottom



pH



Inner Port Shelter

Bottom

Temperature (℃)

Salinity


Appendix B


Summary of water quality statistics of the Port Shelter WCZ in 2011 (continued)

Rocky Harbour Bluff IslandParameter PM7 PM8 PM9 PM11

Number of samples 12 12 12 1222.2 21.9 22.3 21.9

(14.9 - 28.6) (14.8 - 28.6) (14.7 - 28.5) (14.7 - 28.6)32.7 32.7 32.5 32.7

(31.8 - 33.6) (31.8 - 33.6) (31.1 - 33.8) (31.9 - 33.9)6.5 6.4 6.7 6.3

(3.6 - 9.8) (3.5 - 8.8) (3.8 - 9.9) (3.5 - 8.1)5.8 5.8 6.1 5.9

(1.7 - 8.5) (2.6 - 8.0) (2.3 - 8.0) (2.7 - 8.0)89 87 92 87

(53 - 123) (51 - 108) (56 - 124) (51 - 100)78 78 82 79

(23 - 110) (37 - 100) (32 - 101) (38 - 100)8.0 8.0 8.0 8.0

(7.9 - 8.2) (7.8 - 8.3) (7.9 - 8.3) (7.8 - 8.3)4.1 4.0 3.8 4.0

(2.2 - 7.0) (2.4 - 6.3) (1.8 - 6.2) (2.0 - 6.5)1.1 1.3 1.2 1.9

(0.4 - 2.7) (0.5 - 1.9) (0.4 - 2.5) (1.0 - 3.5)1.2 1.3 1.4 2.0

(0.5 - 2.2) (0.7 - 2.5) (0.7 - 2.9) (0.6 - 3.9)0.7 0.7 0.9 0.6

(0.3 - 1.9) (0.3 - 1.6) (<0.1 - 3.3) (<0.1 - 1.5)0.039 0.036 0.039 0.037

(0.026 - 0.059) (0.019 - 0.064) (0.022 - 0.066) (0.023 - 0.061)0.001 0.001 0.002 0.001

(<0.001 - 0.003) (<0.001 - 0.003) (<0.001 - 0.003) (<0.001 - 0.003)0.006 0.008 0.007 0.008

(<0.002 - 0.024) (<0.002 - 0.023) (<0.002 - 0.019) (<0.002 - 0.027)0.046 0.062 0.050 0.070

(0.002 - 0.147) (0.002 - 0.170) (<0.002 - 0.160) (<0.002 - 0.190) 0.09 0.11 0.10 0.12

(0.04 - 0.20) (0.04 - 0.23) (0.03 - 0.22) (0.03 - 0.24)0.14 0.13 0.13 0.13

(0.09 - 0.20) (0.08 - 0.19) (0.08 - 0.18) (0.07 - 0.15)0.20 0.20 0.19 0.21

(0.14 - 0.30) (0.12 - 0.31) (0.13 - 0.30) (0.13 - 0.30)0.007 0.009 0.007 0.009

(0.003 - 0.013) (0.004 - 0.016) (0.004 - 0.016) (0.003 - 0.017)0.02 0.02 0.02 0.02

(<0.02 - 0.03) (<0.02 - 0.02) (<0.02 - 0.03) (<0.02 - 0.04)0.56 0.65 0.60 0.67

(0.15 - 1.10) (0.15 - 1.12) (0.15 - 1.17) (0.16 - 1.23)2.8 2.0 3.0 1.5

(0.5 - 8.0) (0.6 - 5.8) (0.3 - 11.1) (0.4 - 3.1)1 1 1 1

(<1 - 4) (<1 - 1) (<1 - 3) (<1 - 2)2 1 2 2

(<1 - 17) (<1 - 3) (<1 - 9) (<1 - 9)




pH




Turbidity (NTU)




Outer Port Shelter

Bottom



Bottom

Temperature (℃)

Salinity











Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Tolo Harbour WCZ in 2011

Harbour Subzone Buffer Subzone Channel Subzone Parameter TM2 TM3 TM4 TM5 TM6 TM7 TM8

Number of samples 12 12 12 12 12 12 1223.6 23.4 23.3 23.7 22.8 23.0 22.3

(15.5 - 30.2) (15.5 - 30.2) (15.4 - 29.8) (15.8 - 30.6) (15.3 - 29.8) (15.2 - 29.8) (15.0 - 29.4)31.2 31.6 31.6 31.8 32.3 32.4 32.7

(27.2 - 32.6) (28.9 - 32.7) (27.8 - 33.1) (29.8 - 32.8) (30.4 - 33.1) (31.0 - 33.2) (31.3 - 33.5)6.5 6.2 5.9 6.4 5.7 6.0 5.7

(2.1 - 9.2) (3.0 - 8.1) (2.2 - 8.2) (3.9 - 8.6) (3.0 - 7.7) (3.4 - 7.9) (3.1 - 8.0)6.4 4.6 4.5 6.2 4.8 5.3 4.9

(2.1 - 8.7) (1.6 - 7.5) (1.1 - 7.2) (3.8 - 7.7) (1.1 - 7.4) (2.0 - 7.6) (1.0 - 7.8)90 86 82 90 79 83 79

(32 - 136) (45 - 113) (33 - 108) (54 - 125) (45 - 104) (48 - 104) (46 - 100)90 63 61 87 64 72 66

(33 - 127) (23 - 92) (16 - 95) (52 - 113) (16 - 93) (28 - 98) (14 - 95)7.9 8.0 8.0 8.0 8.0 8.0 8.0

(7.6 - 8.4) (7.8 - 8.3) (7.7 - 8.3) (7.9 - 8.4) (7.8 - 8.2) (7.9 - 8.2) (7.8 - 8.2)2.6 2.5 2.8 2.8 3.0 3.6 3.8

(1.9 - 3.5) (1.9 - 3.1) (2.3 - 3.4) (2.1 - 3.6) (2.0 - 5.0) (2.4 - 5.0) (2.0 - 6.0)1.7 1.6 1.1 1.4 1.3 0.8 1.5

(0.7 - 5.0) (0.8 - 6.0) (0.4 - 1.9) (0.4 - 5.1) (0.5 - 4.4) (0.5 - 1.5) (0.8 - 2.8)2.1 1.7 1.3 1.4 1.8 1.0 1.7

(0.9 - 6.4) (1.0 - 2.3) (0.6 - 2.7) (<0.5 - 4.8) (0.8 - 7.5) (0.6 - 1.4) (1.0 - 3.8)1.7 1.7 1.5 1.7 1.2 1.1 0.9

(0.8 - 2.9) (1.0 - 2.4) (0.8 - 2.6) (0.8 - 3.7) (0.6 - 2.0) (0.7 - 1.8) (0.5 - 2.0)0.076 0.077 0.072 0.051 0.055 0.050 0.047

(0.035 - 0.165) (0.031 - 0.137) (0.032 - 0.123) (0.015 - 0.100) (0.018 - 0.103) (0.022 - 0.107) (0.017 - 0.102)0.003 0.004 0.003 0.002 0.002 0.002 0.002

(<0.001 - 0.008) (<0.001 - 0.012) (<0.001 - 0.009) (<0.001 - 0.005) (<0.001 - 0.003) (<0.001 - 0.004) (<0.001 - 0.003)0.003 0.005 0.006 0.002 0.009 0.005 0.010

(<0.002 - 0.008) (<0.002 - 0.017) (<0.002 - 0.028) (<0.002 - 0.005) (<0.002 - 0.042) (<0.002 - 0.016) (<0.002 - 0.037)0.149 0.012 0.013 0.018 0.013 0.020 0.076

(<0.002 - 1.560) (0.002 - 0.075) (<0.002 - 0.092) (0.002 - 0.101) (0.002 - 0.071) (0.002 - 0.105) (<0.002 - 0.609) 0.23 0.09 0.09 0.07 0.08 0.07 0.13

(0.04 - 1.66) (0.04 - 0.21) (0.04 - 0.21) (0.02 - 0.14) (0.03 - 0.15) (0.03 - 0.14) (0.03 - 0.66)0.26 0.25 0.23 0.20 0.19 0.17 0.17

(0.19 - 0.41) (0.17 - 0.33) (0.17 - 0.32) (0.13 - 0.35) (0.15 - 0.27) (0.11 - 0.22) (0.12 - 0.32)0.41 0.26 0.25 0.22 0.21 0.19 0.25

(0.20 - 1.86) (0.18 - 0.39) (0.17 - 0.41) (0.14 - 0.36) (0.15 - 0.32) (0.11 - 0.28) (0.13 - 0.77)0.005 0.005 0.004 0.005 0.006 0.005 0.008

(<0.002 - 0.029) (<0.002 - 0.007) (<0.002 - 0.008) (<0.002 - 0.009) (0.002 - 0.011) (<0.002 - 0.014) (0.003 - 0.016)0.03 0.03 0.02 0.02 0.02 0.02 0.02

(<0.02 - 0.06) (<0.02 - 0.05) (<0.02 - 0.04) (<0.02 - 0.04) (<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.04)0.90 0.84 0.85 0.59 0.71 0.58 0.64

(0.17 - 1.85) (0.11 - 1.77) (0.09 - 1.77) (0.09 - 1.30) (0.24 - 1.23) (0.21 - 1.04) (0.39 - 1.19)6.6 6.2 4.7 4.2 3.4 2.9 3.8

(3.0 - 13.7) (3.2 - 17.3) (2.2 - 8.4) (1.9 - 6.7) (1.3 - 5.5) (1.0 - 5.5) (0.8 - 17.7)9 6 4 2 1 1 1

(<1 - 390) (<1 - 55) (<1 - 200) (<1 - 18) (<1 - 11) (<1 - 5) (<1 - 3)44 16 12 4 4 2 1

(2 - 2800) (<1 - 210) (1 - 800) (1 - 300) (1 - 140) (<1 - 32) (<1 - 4)








Bottom

Bottom


Temperature (℃)

Salinity



Turbidity (NTU)



pH










Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Southern WCZ in 2011

Parameter SM1 SM2 SM19 SM3 SM4Number of samples 12 12 12 12 12

22.4 22.5 22.1 22.1 22.7(14.7 - 28.0) (15.1 - 27.7) (14.6 - 27.4) (14.9 - 26.7) (15.0 - 28.0)

32.5 32.3 32.6 32.6 32.1(30.8 - 34.0) (30.4 - 33.9) (31.1 - 34.0) (30.9 - 33.7) (30.0 - 33.5)

6.4 6.3 6.1 5.9 6.2(4.0 - 8.0) (3.7 - 7.9) (3.8 - 7.8) (3.3 - 7.9) (3.1 - 7.8)

5.7 5.8 5.5 5.4 6.0(2.2 - 7.9) (1.6 - 7.9) (0.9 - 7.8) (1.3 - 7.9) (2.8 - 7.7)

88 87 84 80 86(57 - 99) (53 - 98) (54 - 96) (46 - 97) (45 - 102)

77 80 75 74 83(31 - 97) (23 - 97) (12 - 95) (18 - 97) (41 - 96)

8.0 8.0 8.0 7.9 7.9(7.8 - 8.3) (7.8 - 8.3) (7.8 - 8.3) (7.7 - 8.3) (7.7 - 8.3)

2.8 2.7 2.6 3.1 3.5(2.0 - 3.7) (1.6 - 3.6) (2.0 - 3.3) (1.9 - 4.0) (1.9 - 11.0)

2.8 2.8 3.2 3.5 2.4(1.1 - 6.8) (1.3 - 5.4) (1.3 - 7.2) (1.6 - 4.8) (0.9 - 5.0)

3.2 3.5 3.0 3.9 2.9(1.4 - 8.6) (1.1 - 6.0) (1.0 - 7.5) (1.4 - 6.8) (1.1 - 7.4)

0.8 0.8 0.7 0.8 0.9(0.5 - 1.5) (0.2 - 1.2) (<0.1 - 1.3) (0.3 - 1.2) (0.3 - 1.6)

0.035 0.043 0.032 0.044 0.061(0.013 - 0.070) (0.014 - 0.076) (0.010 - 0.071) (0.014 - 0.113) (0.026 - 0.140)

0.001 0.002 0.001 0.001 0.002(<0.001 - 0.002) (<0.001 - 0.003) (<0.001 - 0.002) (<0.001 - 0.002) (<0.001 - 0.004)

0.015 0.020 0.017 0.022 0.026(0.002 - 0.033) (0.004 - 0.043) (0.004 - 0.033) (0.006 - 0.045) (0.008 - 0.061)

0.092 0.108 0.094 0.111 0.127(0.011 - 0.207) (0.024 - 0.197) (0.019 - 0.210) (0.035 - 0.200) (0.034 - 0.217)

0.14 0.17 0.14 0.18 0.21(0.07 - 0.25) (0.09 - 0.26) (0.08 - 0.25) (0.09 - 0.27) (0.09 - 0.34)

0.12 0.14 0.13 0.14 0.16(0.08 - 0.16) (0.10 - 0.22) (0.06 - 0.17) (0.09 - 0.19) (0.11 - 0.21)

0.23 0.27 0.24 0.27 0.31(0.14 - 0.36) (0.18 - 0.43) (0.17 - 0.35) (0.18 - 0.37) (0.21 - 0.44)

0.010 0.010 0.010 0.012 0.013(0.004 - 0.017) (0.004 - 0.020) (0.004 - 0.018) (0.005 - 0.018) (0.004 - 0.020)

0.02 0.02 0.03 0.03 0.03(<0.02 - 0.03) (<0.02 - 0.03) (<0.02 - 0.04) (<0.02 - 0.04) (0.02 - 0.03)

0.81 0.83 0.82 0.93 0.84(0.18 - 1.30) (0.26 - 1.33) (0.23 - 1.30) (0.31 - 1.51) (0.24 - 1.70)

2.3 2.6 2.2 1.9 3.1(0.6 - 5.6) (0.4 - 5.8) (0.6 - 6.9) (0.4 - 3.3) (0.5 - 8.0)

2 52 1 61 9(<1 - 16) (3 - 2600) (<1 - 8) (9 - 1700) (2 - 47)

2 86 2 110 20(<1 - 32) (5 - 3400) (<1 - 30) (17 - 2300) (5 - 82)




East Lamma ChannelHong Kong Island (South)

Bottom

Temperature (℃)

Salinity


Bottom
















Turbidity (NTU)



pH

Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Southern WCZ in 2011 (continued)

Parameter SM5 SM6 SM7 SM9 SM18Number of samples 12 12 12 12 12

23.0 22.8 22.9 23.0 22.5(15.0 - 29.0) (14.9 - 28.6) (15.1 - 27.9) (16.8 - 28.4) (14.8 - 28.0)

31.8 31.9 31.6 31.1 32.1(27.2 - 33.8) (28.8 - 33.7) (28.3 - 33.2) (28.1 - 33.2) (29.0 - 33.9)

6.5 6.5 6.2 6.3 6.1(4.2 - 8.1) (3.5 - 8.0) (3.4 - 7.6) (3.2 - 8.6) (3.5 - 7.9)

6.3 5.8 5.9 6.0 5.5(3.8 - 7.9) (2.0 - 8.0) (3.0 - 8.2) (2.9 - 8.6) (0.4 - 7.9)

91 89 86 88 84(60 - 123) (50 - 106) (49 - 102) (47 - 113) (49 - 97)

87 80 80 83 75(55 - 115) (28 - 98) (44 - 103) (42 - 108) (5 - 97)

8.0 8.0 7.9 7.9 8.0(7.8 - 8.4) (7.8 - 8.3) (7.7 - 8.3) (7.5 - 8.3) (7.8 - 8.3)

2.5 2.5 2.4 1.9 2.7(1.8 - 3.8) (1.9 - 4.0) (1.3 - 3.1) (1.0 - 2.6) (1.7 - 4.6)

4.0 4.4 4.5 4.8 3.8(1.2 - 8.6) (1.1 - 9.7) (1.2 - 9.5) (2.4 - 11.6) (0.9 - 10.2)

5.0 4.8 5.0 6.6 3.3(1.0 - 10.7) (0.9 - 12.5) (1.1 - 9.3) (3.3 - 16.7) (0.7 - 7.0)

0.9 1.0 1.1 1.0 0.7(0.2 - 2.1) (0.1 - 2.1) (0.3 - 2.2) (<0.1 - 2.1) (0.1 - 1.1)

0.041 0.052 0.081 0.110 0.038(0.015 - 0.091) (0.014 - 0.110) (0.034 - 0.173) (0.014 - 0.267) (0.013 - 0.070)

0.002 0.002 0.003 0.003 0.001(<0.001 - 0.004) (<0.001 - 0.009) (<0.001 - 0.010) (<0.001 - 0.006) (<0.001 - 0.003)

0.025 0.028 0.039 0.037 0.023(0.007 - 0.071) (0.008 - 0.081) (0.008 - 0.070) (0.009 - 0.062) (0.003 - 0.054)

0.131 0.131 0.176 0.207 0.126(0.040 - 0.280) (0.034 - 0.245) (0.051 - 0.383) (0.070 - 0.383) (0.015 - 0.213)

0.20 0.21 0.30 0.35 0.19(0.10 - 0.38) (0.08 - 0.33) (0.15 - 0.50) (0.19 - 0.55) (0.07 - 0.29)

0.14 0.17 0.20 0.26 0.12(0.10 - 0.25) (0.11 - 0.25) (0.09 - 0.34) (0.13 - 0.39) (0.07 - 0.16)

0.30 0.33 0.41 0.50 0.27(0.19 - 0.51) (0.24 - 0.49) (0.20 - 0.59) (0.29 - 0.71) (0.14 - 0.41)

0.010 0.011 0.016 0.018 0.011(<0.002 - 0.017) (0.004 - 0.025) (0.005 - 0.026) (0.006 - 0.032) (0.004 - 0.018)

0.02 0.03 0.03 0.04 0.02(<0.02 - 0.03) (0.02 - 0.05) (<0.02 - 0.05) (0.03 - 0.06) (<0.02 - 0.04)

0.91 0.93 1.01 1.00 0.95(0.33 - 1.97) (0.28 - 1.83) (0.27 - 1.93) (0.06 - 1.80) (0.19 - 1.83)

3.1 3.4 4.6 5.2 1.8(0.4 - 8.5) (0.5 - 10.0) (0.5 - 14.1) (0.8 - 23.7) (0.4 - 4.7)

1 1 4 5 1(<1 - 4) (<1 - 3) (<1 - 92) (1 - 39) (<1 - 6)

2 2 8 10 2(<1 - 16) (<1 - 88) (<1 - 130) (1 - 86) (<1 - 38)








Turbidity (NTU)










Bottom



pH



West Lamma Channel

Bottom

Temperature (℃)

Salinity


Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Southern WCZ in 2011 (continued)

Soko IslandsParameter SM10 SM11 SM12 SM13 SM17 SM20

Number of samples 12 12 12 12 12 1223.4 23.3 23.2 23.4 23.0 23.1

(16.5 - 29.4) (16.5 - 29.2) (16.2 - 29.3) (16.8 - 29.3) (15.9 - 28.9) (16.2 - 29.1)31.0 31.0 31.5 31.4 31.5 31.6

(27.0 - 33.0) (26.6 - 33.0) (27.4 - 33.3) (27.3 - 33.3) (24.1 - 33.7) (28.5 - 33.4)6.7 6.8 6.6 6.7 6.6 6.3

(2.9 - 9.1) (3.1 - 9.1) (3.4 - 8.2) (3.6 - 8.2) (4.2 - 8.4) (2.3 - 8.5)6.7 6.5 6.4 6.6 6.2 6.2

(2.9 - 9.1) (3.2 - 9.2) (3.6 - 8.2) (3.5 - 8.1) (3.4 - 8.3) (2.2 - 8.3)93 94 91 94 91 88

(43 - 124) (45 - 137) (51 - 109) (54 - 124) (62 - 120) (34 - 121)93 90 89 92 86 85

(42 - 127) (46 - 133) (52 - 106) (51 - 112) (51 - 111) (33 - 121)7.9 7.9 7.9 7.9 7.9 7.9

(7.6 - 8.3) (7.6 - 8.4) (7.7 - 8.3) (7.7 - 8.3) (7.7 - 8.3) (7.7 - 8.4)1.9 2.0 2.1 2.2 3.0 2.2

(1.2 - 2.2) (1.5 - 2.3) (1.4 - 3.9) (1.4 - 3.5) (2.0 - 6.0) (1.3 - 3.0)5.5 5.7 6.3 6.1 5.7 6.4

(2.9 - 8.4) (2.1 - 11.7) (2.1 - 12.8) (1.0 - 20.2) (1.3 - 29.7) (2.6 - 19.0)7.1 7.9 8.6 7.1 5.1 7.7

(4.1 - 11.0) (3.3 - 15.3) (2.1 - 17.0) (0.9 - 18.0) (1.7 - 12.4) (2.2 - 20.7)1.2 1.0 0.8 0.9 0.6 0.7

(0.1 - 2.7) (0.2 - 2.6) (0.2 - 1.6) (0.3 - 1.8) (0.1 - 1.2) (0.3 - 1.5)0.101 0.104 0.079 0.059 0.048 0.050

(0.024 - 0.210) (0.030 - 0.193) (0.032 - 0.143) (0.013 - 0.140) (0.022 - 0.107) (0.012 - 0.120)0.003 0.003 0.003 0.002 0.002 0.002

(<0.001 - 0.006) (<0.001 - 0.008) (<0.001 - 0.005) (<0.001 - 0.004) (<0.001 - 0.004) (<0.001 - 0.003)0.035 0.032 0.022 0.022 0.019 0.019

(0.009 - 0.073) (0.006 - 0.075) (0.006 - 0.059) (0.006 - 0.055) (0.003 - 0.048) (0.004 - 0.039)0.227 0.185 0.149 0.147 0.115 0.231

(0.083 - 0.415) (0.038 - 0.397) (0.028 - 0.330) (0.016 - 0.363) (0.007 - 0.248) (0.010 - 1.220) 0.36 0.32 0.25 0.23 0.18 0.30

(0.13 - 0.60) (0.09 - 0.58) (0.08 - 0.43) (0.05 - 0.45) (0.05 - 0.32) (0.06 - 1.25)0.25 0.25 0.21 0.17 0.17 0.16

(0.17 - 0.35) (0.10 - 0.31) (0.11 - 0.29) (0.06 - 0.23) (0.10 - 0.29) (0.08 - 0.24)0.51 0.46 0.38 0.34 0.30 0.41

(0.26 - 0.75) (0.17 - 0.72) (0.22 - 0.58) (0.16 - 0.59) (0.16 - 0.46) (0.16 - 1.40)0.015 0.016 0.013 0.009 0.009 0.010

(<0.002 - 0.029) (0.002 - 0.029) (0.002 - 0.024) (<0.002 - 0.021) (0.005 - 0.022) (0.004 - 0.017)0.04 0.04 0.03 0.03 0.03 0.03

(0.03 - 0.05) (0.02 - 0.06) (0.02 - 0.04) (0.02 - 0.03) (<0.02 - 0.04) (0.02 - 0.05)1.01 1.05 0.90 0.87 0.77 0.86

(<0.05 - 2.00) (0.07 - 2.03) (0.16 - 1.67) (0.13 - 1.67) (0.05 - 1.47) (0.06 - 1.67)7.2 5.7 4.5 3.9 2.4 2.3

(0.5 - 25.0) (1.6 - 21.7) (0.7 - 18.7) (0.9 - 15.3) (0.5 - 5.8) (0.7 - 5.4)2 2 13 3 2 1

(<1 - 9) (<1 - 8) (<1 - 450) (<1 - 78) (<1 - 14) (<1 - 7)7 3 28 4 2 2

(1 - 28) (<1 - 16) (<1 - 820) (<1 - 110) (<1 - 28) (<1 - 10)




Lantau Island (East) Lantau Island (South)

Bottom

Bottom



pH




Turbidity (NTU)












Temperature (℃)

Salinity



Appendix B


22.3 x 17.4cm

Summary of water quality statistics of the Victoria Harbour WCZ in 2011

Parameter VM1 VM2 VM4 VM5 VM6Number of samples 12 12 12 12 12

22.2 22.5 22.7 22.9 22.9(15.8 - 26.4) (16.1 - 26.7) (16.1 - 27.3) (16.5 - 27.5) (16.4 - 27.6)

32.6 32.2 31.9 31.6 31.7(30.0 - 33.5) (29.2 - 33.5) (27.5 - 33.4) (26.2 - 33.2) (28.4 - 33.1)

5.5 5.4 5.2 4.9 4.9(3.3 - 7.5) (3.8 - 7.5) (3.5 - 7.1) (3.2 - 6.3) (3.1 - 6.4)

5.5 5.4 5.1 4.9 4.8(2.9 - 7.6) (3.5 - 7.6) (3.3 - 7.3) (3.3 - 6.4) (2.8 - 6.5)

76 74 71 68 68(48 - 91) (55 - 92) (51 - 88) (48 - 81) (46 - 79)

75 74 70 67 66(41 - 92) (49 - 93) (48 - 90) (48 - 82) (40 - 83)

7.8 7.8 7.8 7.8 7.8(7.6 - 8.3) (7.6 - 8.2) (7.6 - 8.2) (7.6 - 8.2) (7.5 - 8.2)

2.9 2.6 2.6 2.5 2.7(2.1 - 4.0) (1.9 - 3.5) (1.9 - 4.0) (1.4 - 3.5) (1.8 - 5.2)

3.3 3.2 2.9 2.9 2.9(1.9 - 6.0) (1.7 - 12.5) (1.7 - 5.6) (1.3 - 5.7) (1.6 - 5.0)

4.5 3.7 4.0 4.9 3.6(2.5 - 8.5) (2.1 - 6.9) (2.2 - 7.2) (1.3 - 15.1) (0.7 - 6.8)

0.6 0.8 0.9 1.1 1.0(0.2 - 1.4) (0.3 - 1.4) (0.4 - 1.4) (0.4 - 2.0) (0.5 - 1.6)

0.089 0.133 0.156 0.201 0.207(0.024 - 0.142) (0.068 - 0.283) (0.052 - 0.303) (0.085 - 0.280) (0.082 - 0.287)

0.002 0.004 0.004 0.005 0.005(<0.001 - 0.005) (0.001 - 0.008) (<0.001 - 0.009) (0.002 - 0.011) (0.002 - 0.011)

0.024 0.029 0.030 0.034 0.034(0.011 - 0.058) (0.011 - 0.070) (0.013 - 0.075) (0.015 - 0.089) (0.017 - 0.084)

0.111 0.146 0.154 0.171 0.177(0.049 - 0.250) (0.065 - 0.286) (0.076 - 0.297) (0.080 - 0.357) (0.072 - 0.340)

0.22 0.31 0.34 0.41 0.42(0.13 - 0.36) (0.20 - 0.50) (0.25 - 0.55) (0.28 - 0.55) (0.27 - 0.53)

0.20 0.29 0.30 0.38 0.38(0.14 - 0.26) (0.22 - 0.43) (0.20 - 0.46) (0.23 - 0.50) (0.25 - 0.54)

0.33 0.46 0.49 0.59 0.59(0.23 - 0.52) (0.30 - 0.65) (0.29 - 0.70) (0.44 - 0.74) (0.47 - 0.78)

0.019 0.027 0.029 0.033 0.034(0.012 - 0.027) (0.012 - 0.036) (0.018 - 0.035) (0.017 - 0.041) (0.019 - 0.040)

0.04 0.04 0.05 0.05 0.05(0.03 - 0.05) (0.03 - 0.06) (0.03 - 0.06) (0.04 - 0.06) (0.04 - 0.06)

0.86 0.93 1.01 1.10 1.11(0.43 - 1.40) (0.43 - 1.37) (0.50 - 1.60) (0.61 - 2.03) (0.59 - 2.03)

1.8 2.3 2.0 1.7 1.6(0.5 - 5.0) (0.4 - 9.1) (0.4 - 9.0) (0.3 - 9.2) (0.4 - 9.3)

120 710 2500 3700 2900(7 - 430) (60 - 11000) (640 - 6200) (930 - 30000) (690 - 10000)

290 1500 4700 9100 6300(25 - 1000) (110 - 26000) (1600 - 12000) (2400 - 60000) (1300 - 21000)




Victoria Harbour (East) Victoria Harbour (Central)

Bottom

Bottom



pH




Turbidity (NTU)












Temperature (℃)

Salinity



Appendix B


22.3 x 17.4cm

Summary of water quality statistics of the Victoria Harbour WCZ in 2011 (continued)

Stonecutters IslandParameter VM7 VM8 VM15 VM12 VM14

Number of samples 12 12 12 12 1223.2 23.1 23.1 23.1 23.7

(15.0 - 26.7) (15.1 - 26.9) (16.5 - 28.0) (15.3 - 26.5) (15.4 - 28.6)31.7 31.8 31.3 31.7 30.0

(29.6 - 32.7) (29.1 - 32.8) (26.8 - 33.0) (30.2 - 32.8) (23.9 - 32.8)5.0 5.5 5.2 5.2 5.9

(3.2 - 6.6) (3.1 - 7.0) (3.9 - 6.8) (3.0 - 6.6) (3.2 - 8.4)4.7 5.4 4.9 5.0 5.8

(3.0 - 6.7) (2.7 - 7.0) (3.1 - 6.9) (2.9 - 6.6) (2.8 - 8.2)69 76 72 72 83

(46 - 85) (45 - 95) (58 - 84) (42 - 85) (46 - 126)65 74 68 69 80

(43 - 83) (38 - 86) (46 - 85) (42 - 82) (40 - 122)7.8 7.8 7.8 7.8 7.9

(7.5 - 8.1) (7.6 - 8.2) (7.5 - 8.2) (7.5 - 8.1) (7.6 - 8.3)2.7 2.5 2.4 2.1 2.1

(1.8 - 3.6) (1.7 - 3.0) (0.9 - 4.8) (1.6 - 2.9) (1.6 - 3.0)3.5 4.0 3.6 13.3 4.3

(1.7 - 7.6) (1.5 - 6.9) (1.3 - 8.5) (3.8 - 40.4) (2.1 - 10.1)4.4 5.2 4.8 16.4 6.2

(1.7 - 7.6) (2.3 - 10.1) (1.5 - 10.2) (5.4 - 47.6) (2.2 - 15.7)1.2 1.0 0.9 0.9 1.1

(0.2 - 2.2) (0.4 - 2.1) (0.4 - 1.6) (0.4 - 2.0) (0.5 - 2.4)0.251 0.185 0.222 0.176 0.126

(0.140 - 0.387) (0.053 - 0.433) (0.093 - 0.297) (0.059 - 0.307) (0.039 - 0.290)0.006 0.005 0.006 0.004 0.004

(0.002 - 0.010) (0.002 - 0.009) (0.002 - 0.011) (0.002 - 0.008) (0.001 - 0.006)0.043 0.047 0.038 0.050 0.075

(0.016 - 0.084) (0.011 - 0.095) (0.017 - 0.098) (0.012 - 0.120) (0.013 - 0.160)0.174 0.169 0.194 0.205 0.286

(0.103 - 0.367) (0.097 - 0.387) (0.079 - 0.427) (0.117 - 0.423) (0.120 - 0.773) 0.47 0.40 0.45 0.43 0.49

(0.29 - 0.62) (0.28 - 0.63) (0.28 - 0.62) (0.30 - 0.67) (0.29 - 1.00)0.44 0.32 0.38 0.32 0.27

(0.29 - 0.60) (0.17 - 0.59) (0.29 - 0.45) (0.18 - 0.53) (0.14 - 0.40)0.66 0.54 0.61 0.57 0.63

(0.45 - 0.89) (0.41 - 0.78) (0.46 - 0.82) (0.42 - 0.79) (0.37 - 1.29)0.035 0.026 0.034 0.027 0.024

(0.007 - 0.054) (0.003 - 0.037) (0.018 - 0.042) (0.008 - 0.042) (0.003 - 0.038)0.06 0.04 0.05 0.05 0.04

(0.04 - 0.08) (0.02 - 0.06) (0.05 - 0.06) (0.03 - 0.09) (0.03 - 0.06)1.09 1.05 1.17 1.13 1.32

(0.41 - 2.07) (0.35 - 1.93) (0.57 - 1.93) (0.36 - 2.03) (0.30 - 3.40)2.6 2.3 1.9 2.1 4.0

(0.3 - 15.7) (0.3 - 11.7) (0.4 - 9.8) (0.2 - 10.5) (0.4 - 21.0)1700 310 180 210 170

(230 - 12000) (14 - 2600) (10 - 2000) (91 - 520) (7 - 3700)4000 600 510 570 400

(480 - 32000) (26 - 5400) (23 - 4000) (170 - 2200) (26 - 9300)




Victoria Harbour (West) Rambler Channel

Temperature (℃)

Salinity







Bottom

Bottom








pH



Turbidity (NTU)




Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Eastern Buffer WCZ in 2011

Chai WanParameter EM1 EM2 EM3

Number of samples 12 12 1222.8 22.9 22.8

(15.4 - 29.2) (15.4 - 29.0) (15.3 - 28.9)32.6 32.7 32.9

(31.7 - 33.9) (31.7 - 33.9) (31.6 - 33.9)6.0 6.3 6.5

(3.9 - 8.0) (4.3 - 8.1) (4.1 - 8.2)5.8 5.8 6.0

(3.1 - 7.9) (3.1 - 8.0) (3.5 - 8.1)84 88 90

(56 - 98) (62 - 98) (59 - 101)80 80 83

(43 - 96) (44 - 96) (48 - 99)7.9 7.9 7.9

(7.7 - 8.1) (7.7 - 8.1) (7.8 - 8.2)2.5 2.6 2.9

(1.2 - 4.0) (1.6 - 4.0) (1.2 - 5.0)3.3 4.0 3.9

(1.4 - 8.3) (1.1 - 7.7) (1.5 - 8.3)3.5 4.3 4.0

(1.5 - 6.5) (1.5 - 10.2) (1.2 - 10.5)0.8 0.8 0.9

(0.2 - 1.4) (0.1 - 2.3) (0.2 - 2.8)0.068 0.055 0.040

(0.016 - 0.133) (0.013 - 0.115) (0.006 - 0.081)0.002 0.002 0.001

(<0.001 - 0.007) (<0.001 - 0.005) (<0.001 - 0.003)0.020 0.018 0.014

(0.003 - 0.042) (0.004 - 0.040) (0.002 - 0.036)0.124 0.111 0.065

(0.018 - 0.395) (0.017 - 0.422) (0.005 - 0.190) 0.21 0.18 0.12

(0.10 - 0.45) (0.09 - 0.47) (0.04 - 0.21)0.17 0.16 0.14

(0.09 - 0.26) (0.08 - 0.25) (0.09 - 0.22)0.32 0.29 0.22

(0.15 - 0.53) (0.16 - 0.56) (0.12 - 0.31)0.015 0.012 0.010

(0.007 - 0.023) (0.005 - 0.019) (0.002 - 0.017)0.03 0.03 0.03

(<0.02 - 0.05) (<0.02 - 0.04) (<0.02 - 0.04)0.81 0.76 0.69

(0.19 - 1.33) (0.19 - 1.17) (0.21 - 1.30)2.3 2.6 2.2

(0.2 - 8.6) (0.4 - 8.8) (0.4 - 8.5)36 12 2

(1 - 1300) (1 - 750) (<1 - 31)82 30 4

(2 - 3100) (1 - 1600) (1 - 87)




pH




Turbidity (NTU)












Tathong Channel

Temperature (℃)

Salinity



Bottom

Bottom



Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Western Buffer WCZ in 2011

Parameter WM1 WM2 WM3 WM4Number of samples 12 12 12 12

22.7 23.0 22.9 23.0(15.1 - 26.2) (15.1 - 26.4) (15.2 - 26.4) (15.2 - 26.5)

32.6 31.8 32.1 31.6(31.8 - 33.3) (30.3 - 33.0) (30.7 - 33.0) (29.0 - 32.9)

5.8 5.6 5.4 5.5(3.3 - 7.4) (3.2 - 7.3) (2.9 - 7.2) (3.2 - 7.0)

5.3 5.5 5.2 5.2(2.0 - 7.4) (3.2 - 7.3) (2.8 - 7.3) (2.7 - 7.1)

80 77 75 76(47 - 97) (46 - 95) (42 - 89) (45 - 88)

73 76 72 72(29 - 91) (46 - 91) (40 - 90) (40 - 87)

7.9 7.9 7.9 7.9(7.6 - 8.1) (7.6 - 8.1) (7.6 - 8.1) (7.6 - 8.1)

2.7 2.6 2.4 2.4(2.0 - 3.5) (1.9 - 3.6) (1.4 - 3.7) (1.6 - 3.6)

4.1 4.7 5.3 4.9(2.2 - 7.4) (1.6 - 10.6) (3.6 - 8.0) (2.5 - 10.3)

5.4 6.0 7.5 6.5(3.0 - 10.2) (2.1 - 13.4) (3.7 - 17.3) (2.8 - 13.9)

0.7 0.8 0.9 0.8(0.1 - 1.4) (0.2 - 1.5) (0.5 - 1.7) (0.2 - 1.5)

0.084 0.114 0.148 0.117(0.025 - 0.170) (0.048 - 0.207) (0.056 - 0.310) (0.037 - 0.250)

0.002 0.003 0.004 0.003(<0.001 - 0.005) (0.001 - 0.005) (0.001 - 0.008) (0.001 - 0.006)

0.031 0.049 0.045 0.055(0.006 - 0.074) (0.007 - 0.123) (0.008 - 0.123) (0.011 - 0.150)

0.107 0.163 0.178 0.197(0.022 - 0.210) (0.065 - 0.267) (0.078 - 0.487) (0.100 - 0.377)

0.22 0.33 0.37 0.37(0.10 - 0.32) (0.18 - 0.47) (0.21 - 0.67) (0.25 - 0.56)

0.20 0.24 0.28 0.24(0.08 - 0.30) (0.16 - 0.40) (0.16 - 0.41) (0.13 - 0.31)

0.33 0.45 0.51 0.49(0.18 - 0.44) (0.28 - 0.64) (0.29 - 0.77) (0.32 - 0.68)

0.015 0.020 0.023 0.022(0.004 - 0.028) (0.007 - 0.034) (0.008 - 0.037) (0.008 - 0.035)

0.03 0.04 0.04 0.04(0.02 - 0.04) (0.02 - 0.06) (0.02 - 0.06) (0.02 - 0.06)

0.88 1.04 1.05 1.11(0.24 - 1.47) (0.20 - 2.03) (0.31 - 2.03) (0.33 - 2.00)

2.2 2.5 1.8 2.2(0.4 - 4.9) (0.4 - 9.7) (0.3 - 10.2) (0.2 - 9.8)

56 35 87 36(24 - 170) (6 - 300) (26 - 310) (10 - 150)

110 76 190 68(34 - 290) (19 - 460) (67 - 690) (20 - 220)




Tsing Yi(West)

Tsing Yi(South)

Hong Kong Island(West)

Temperature (℃)












Bottom

Bottom




Turbidity (NTU)



Salinity



pH


Appendix B

Summary of water quality statistics for the Junk Bay WCZ in 2011

Parameter JM3 JM4Number of samples 12 12

23.1 22.9(15.6 - 29.1) (15.4 - 29.1)

32.5 32.6(31.3 - 33.7) (31.6 - 33.8)

6.4 6.2(4.1 - 7.7) (3.9 - 7.9)

5.8 5.8(2.9 - 7.8) (3.1 - 7.9)

89 87(61 - 111) (57 - 97)

81 80(41 - 96) (44 - 96)

7.9 7.9(7.6 - 8.2) (7.7 - 8.1)

2.4 2.6(1.3 - 3.5) (1.2 - 3.5)

2.9 3.1(1.1 - 6.7) (1.1 - 7.7)

3.3 3.5(1.4 - 5.9) (1.3 - 5.2)

1.2 0.9(0.4 - 3.6) (0.4 - 1.9)

0.080 0.068(0.024 - 0.147) (0.024 - 0.143)

0.003 0.002(<0.001 - 0.009) (<0.001 - 0.008)

0.021 0.019(0.006 - 0.051) (0.004 - 0.043)

0.098 0.090(0.044 - 0.220) (0.026 - 0.210)

0.20 0.18(0.11 - 0.31) (0.11 - 0.33)

0.22 0.18(0.10 - 0.35) (0.09 - 0.33)

0.35 0.29(0.21 - 0.52) (0.19 - 0.52)

0.016 0.013(0.003 - 0.029) (0.006 - 0.023)

0.04 0.03(0.03 - 0.05) (0.02 - 0.04)

0.73 0.76(0.22 - 1.20) (0.19 - 1.20)

4.3 3.2(<0.2 - 13.7) (0.6 - 8.9)

34 27(4 - 800) (2 - 690)

89 73(8 - 1500) (3 - 1400)



Junk Bay

Temperature (℃)











Bottom

Bottom




Turbidity (NTU)





Salinity



pH

Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the Deep Bay WCZ in 2011

Parameter DM1 DM2 DM3 DM4 DM5Number of samples 12 12 12 12 12

24.0 24.1 23.9 23.8 23.8(14.5 - 31.1) (14.4 - 31.1) (15.1 - 30.6) (16.4 - 29.8) (16.3 - 29.4)

16.9 19.0 23.6 24.9 27.6(6.0 - 22.0) (6.4 - 26.7) (9.1 - 29.3) (10.3 - 31.2) (12.6 - 32.8)

4.8 5.4 6.8 6.3 6.1(2.6 - 9.3) (3.3 - 9.2) (4.1 - 12.5) (4.0 - 10.8) (4.2 - 10.5)

6.3 6.0(3.9 - 11.1) (4.0 - 10.5)

61 71 90 85 83(37 - 108) (48 - 108) (59 - 157) (60 - 132) (63 - 129)

84 82(59 - 135) (60 - 129)

7.3 7.5 7.7 7.7 7.8(7.0 - 7.9) (7.2 - 8.1) (7.4 - 8.5) (7.5 - 8.1) (7.6 - 8.1)

0.7 0.8 0.9 1.0 1.2(0.5 - 1.0) (0.4 - 1.5) (0.5 - 1.5) (0.5 - 1.5) (0.5 - 2.0)

22.9 16.0 12.5 10.5 10.6(10.8 - 50.7) (3.8 - 31.3) (2.8 - 22.3) (4.2 - 27.3) (4.6 - 30.3)

26.7 16.2 10.6 9.0 10.5(13.0 - 46.0) (4.9 - 32.0) (2.8 - 19.0) (4.0 - 20.5) (3.6 - 28.3)

2.6 2.1 2.1 0.8 0.9(1.0 - 4.4) (0.7 - 4.8) (<0.1 - 8.0) (<0.1 - 1.3) (0.1 - 2.1)

2.520 1.640 0.438 0.239 0.153(1.000 - 7.600) (0.260 - 3.300) (0.079 - 1.400) (0.073 - 0.375) (0.005 - 0.283)

0.024 0.024 0.009 0.005 0.004(0.011 - 0.043) (0.007 - 0.059) (0.002 - 0.018) (0.002 - 0.010) (<0.001 - 0.010)

0.348 0.308 0.187 0.157 0.106(0.140 - 0.510) (0.140 - 0.520) (0.066 - 0.450) (0.042 - 0.425) (0.024 - 0.357)

0.735 0.734 1.010 0.658 0.503(0.390 - 2.000) (0.420 - 2.200) (0.300 - 4.300) (0.320 - 1.750) (0.120 - 1.670)

3.60 2.68 1.63 1.05 0.76(1.53 - 8.32) (1.21 - 4.23) (0.46 - 5.06) (0.48 - 2.25) (0.29 - 2.03)

3.13 2.14 0.79 0.44 0.33(1.60 - 8.30) (0.58 - 3.60) (0.37 - 1.90) (0.32 - 0.59) (0.20 - 0.46)

4.22 3.18 1.99 1.26 0.94(2.13 - 9.02) (1.53 - 4.73) (1.02 - 5.28) (0.71 - 2.49) (0.40 - 2.31)

0.276 0.227 0.080 0.045 0.030(0.180 - 0.370) (0.085 - 0.350) (0.003 - 0.150) (0.006 - 0.068) (0.003 - 0.046)

0.38 0.29 0.13 0.07 0.06(0.31 - 0.56) (0.14 - 0.41) (0.09 - 0.18) (0.05 - 0.09) (0.03 - 0.09)

5.09 4.08 2.32 2.09 1.70(1.50 - 8.60) (0.18 - 6.20) (<0.05 - 4.60) (0.50 - 4.55) (0.06 - 4.50)

8.3 8.6 7.6 2.9 2.3(0.4 - 31.0) (0.7 - 46.0) (0.8 - 36.0) (0.8 - 11.5) (0.7 - 8.5)

1000 270 19 63 210(60 - 33000) (5 - 4700) (1 - 390) (5 - 590) (35 - 920)

1900 590 54 120 430(140 - 51000) (35 - 9100) (5 - 1100) (5 - 1100) (72 - 1800)

Note : 3. Data in brackets indicate the ranges.Note : 4. NM - not measured.




Salinity



pH




Bottom

Bottom




Turbidity (NTU)



Outer Deep BayInner Deep Bay

Temperature (℃)








NM NM NM

NM NM NM

Appendix B


22.3 x 17.4cm

Summary of water quality statistics for the North Western WCZ in 2011

Lantau Island Pearl Island Pillar Point Urmston Road(North) (North) (West)

Parameter NM1 NM2 NM3 NM5 NM6 NM8Number of samples 12 12 12 12 12 12

22.5 22.9 23.0 23.1 22.9 22.6(15.4 - 28.0) (15.5 - 28.2) (15.5 - 28.1) (15.6 - 28.5) (14.7 - 29.2) (14.8 - 27.9)

31.0 29.8 29.3 28.6 28.6 30.0(27.2 - 33.0) (23.3 - 33.0) (22.7 - 33.0) (20.4 - 33.0) (19.9 - 33.1) (22.2 - 33.3)

5.7 5.8 6.0 5.9 6.4 6.4(2.9 - 7.2) (3.2 - 7.2) (3.2 - 7.7) (3.3 - 7.7) (3.2 - 8.6) (3.3 - 7.5)

5.5 5.5 5.7 5.7 6.1 5.9(2.5 - 7.1) (2.8 - 7.0) (2.8 - 7.4) (2.7 - 7.3) (2.9 - 7.5) (2.6 - 7.5)

78 80 82 81 87 87(41 - 100) (46 - 103) (46 - 102) (47 - 103) (46 - 127) (47 - 111)

75 75 78 77 83 80(35 - 98) (40 - 99) (39 - 100) (39 - 103) (42 - 104) (37 - 109)

7.8 7.8 7.9 7.8 7.9 7.9(7.6 - 8.2) (7.6 - 8.2) (7.6 - 8.2) (7.6 - 8.2) (7.6 - 8.3) (7.6 - 8.3)

2.4 2.3 2.1 1.9 1.8 1.9(1.7 - 4.0) (1.8 - 3.7) (1.5 - 3.0) (1.5 - 2.2) (1.3 - 2.8) (1.0 - 3.0)

6.3 4.2 6.0 7.6 8.4 10.9(1.5 - 16.8) (1.3 - 8.0) (1.4 - 11.6) (2.0 - 10.9) (3.6 - 17.2) (4.1 - 21.1)

8.1 5.9 6.8 9.8 11.2 13.9(2.8 - 19.5) (2.2 - 13.8) (2.5 - 14.3) (3.9 - 16.3) (4.8 - 27.7) (2.7 - 30.7)

0.5 0.6 0.6 0.6 1.0 1.0(0.2 - 1.1) (0.2 - 1.2) (0.3 - 1.5) (0.3 - 1.0) (0.2 - 6.1) (0.2 - 4.0)

0.114 0.119 0.116 0.126 0.078 0.053(0.039 - 0.250) (0.039 - 0.250) (0.048 - 0.247) (0.047 - 0.270) (0.020 - 0.173) (0.009 - 0.173)

0.003 0.004 0.003 0.004 0.003 0.002(0.001 - 0.014) (0.001 - 0.016) (0.001 - 0.012) (0.001 - 0.011) (<0.001 - 0.007) (<0.001 - 0.006)

0.047 0.065 0.074 0.090 0.081 0.054(0.011 - 0.084) (0.011 - 0.143) (0.012 - 0.187) (0.013 - 0.233) (0.009 - 0.237) (0.008 - 0.143)

0.227 0.324 0.351 0.406 0.392 0.294(0.065 - 0.487) (0.062 - 1.010) (0.058 - 0.870) (0.055 - 1.090) (0.043 - 1.110) (0.026 - 1.040)

0.39 0.51 0.54 0.62 0.55 0.40(0.26 - 0.68) (0.27 - 1.28) (0.22 - 1.10) (0.20 - 1.37) (0.14 - 1.37) (0.07 - 1.27)

0.23 0.25 0.25 0.27 0.28 0.22(0.14 - 0.34) (0.16 - 0.36) (0.16 - 0.35) (0.19 - 0.41) (0.13 - 0.99) (0.11 - 0.68)

0.51 0.64 0.68 0.77 0.75 0.57(0.34 - 0.80) (0.33 - 1.46) (0.31 - 1.37) (0.31 - 1.68) (0.25 - 1.77) (0.20 - 1.45)

0.022 0.025 0.025 0.026 0.022 0.015(0.016 - 0.028) (0.015 - 0.033) (0.012 - 0.035) (0.013 - 0.039) (0.006 - 0.041) (0.006 - 0.025)

0.04 0.04 0.05 0.05 0.05 0.04(0.04 - 0.05) (0.04 - 0.06) (0.03 - 0.08) (0.04 - 0.07) (0.03 - 0.15) (0.02 - 0.08)

1.17 1.37 1.39 1.55 1.67 1.41(0.18 - 2.17) (0.19 - 2.70) (0.21 - 2.97) (0.25 - 3.27) (0.23 - 3.33) (0.11 - 2.97)

1.9 2.4 3.4 2.5 6.6 5.4(0.3 - 6.2) (0.5 - 8.0) (0.6 - 11.1) (0.4 - 9.9) (0.9 - 48.0) (0.5 - 37.2)

42 55 100 500 19 2(10 - 140) (5 - 830) (16 - 810) (130 - 1600) (2 - 130) (1 - 15)

86 110 220 1100 39 5(11 - 380) (7 - 2500) (36 - 2200) (190 - 3400) (3 - 210) (1 - 56)




Chek Lap Kok

Bottom

Bottom


Temperature (℃)

Salinity




pH




Turbidity (NTU)












Appendix C

MARINE WATER QUALITY IN HONG KONG IN 2011 C - 1

Dissolved Oxygen (DO)(bottom)

Dissolved Oxygen (DO)(depth-averaged)

0%

100%

02 03 04 05 06 07 08 09 10 11

MM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM5WQO

Year

Non-compliance

Dissolved Oxygen (DO)

% sample with bottom DO > 2 mg/L

90% sample with bottom DO > 2 mg/LWQO :

2. Depth-averaged

1. Bottom

90% sample with depth-averagedDO > 4 mg/L

WQO :

% sample with depth-averagedDO > 4 mg/L

N

MM1MM2 MM3

MM4

MM7MM5

Sha Tin

Shenzhen

0%

100%

02 03 04 05 06 07 08 09 10 11

MM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM7WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM7WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM4

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11

MM6WQO

Year

MM6WQO

Year

MM6

WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Mirs Bay WCZ

Mirs Bay

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

MM8WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM8WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM13WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM13WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM17WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM17WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM14WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM14WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM15WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM15WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM16WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

MM16WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 110%

100%

02 03 04 05 06 07 08 09 10 11

MM19WQO

Year

MM19WQO

Year

Tai Po

Sai Kung

MM17

MM8

MM15

MM14

MM16

MM13

N

Non-compliance




2. Depth-averaged

1. Bottom


WQO :


WQO

WQO

MM19

100%

0%

100%

0%

Levels of compliance with key Water Quality Objectives in the Mirs Bay WCZ(continued)

Mirs Bay

Appendix C


Total Inorganic Nitrogen (TIN)(depth-averaged)

Unionised Ammonia (NH3-N)(depth-averaged)

N

MM1MM2 MM3

MM4

MM7MM5

Sha Tin

ShenzhenTotal Inorganic Nitrogen (TIN)

annual mean for depth-averagedTIN

annual mean for depth-averagedTIN < 0.3 mg/L

WQO :

annual mean for depth-averagedNH3-N < 0.021 mg/L

WQO :

Non-compliance

annual mean for depth-averagedNH3-N

Unionised Ammonia (NH3-N)

0

0.3 WQO

TIN (mg/L)

0

0.021 WQO

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

MM10

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM1

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

MM2

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

MM3

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM3

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

MM4

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM4

Year

TIN (mg/L)

WQO

NH3-N (mg/L)

MM50

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM5

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

MM7

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM7

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

MM6MM6

Year

TIN (mg/L)

WQO

MM6

0.3

0

0.021

0

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1


Mirs Bay



0

0.021

02 03 04 05 06 07 08 09 10 11

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)WQO

MM19MM19

Year

TIN (mg/L)

WQO

0 . 0 1

Non-compliance

Total Inorganic Nitrogen (TIN)



WQO :


WQO :



TIN (mg/L)

NH3-N (mg/L)

Tai Po MM17

MM8

MM15

MM14

MM16

MM13

N

MM19

Sai Kung

MM170

0.021

02 03 04 05 06 07 08 09 10 11

MM17

Year

NH3-N (mg/L)WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

Year

TIN (mg/L)

WQO

0 . 0 1

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

0

0.021

02 03 04 05 06 07 08 09 10 11

MM16

Year

NH3-N (mg/L)WQO

MM16

Year

TIN (mg/L)

WQO

0 . 0 1

0

0.021

02 03 04 05 06 07 08 09 10 11

NH3-N (mg/L)

MM15

Year

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM15

Year

TIN (mg/L)

WQO

0 . 0 1

0

0.021

02 03 04 05 06 07 08 09 10 11

MM14

Year

NH3-N (mg/L)WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM14

Year

TIN (mg/L)

WQO

0 . 0 1

0

0.021

02 03 04 05 06 07 08 09 10 11

MM13

Year

NH3-N (mg/L)WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM13

Year

TIN (mg/L)

WQO

0 . 0 1

0

0.021

02 03 04 05 06 07 08 09 10 11

MM8

Year

NH3-N (mg/L)WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

MM8

Year

TIN (mg/L)

WQO

0 . 0 1


Mirs Bay

Appendix C


0

0.3 WQO0.3

0

0

0.021 WQO0.021

0

Appendix C


N

MM2

MM7

MM6

Shenzhen

Secondary contact recreation subzone

Tai Po

Sai Kung

E. coli(annual geometric mean)

E. coli

annual geometric mean for depth averagedE. coli (cfu/100mL)

Non-compliance

0

610 WQO

0

5

02 03 04 05 06 07 08 09 10 11

MM7

Year

0

5

02 03 04 05 06 07 08 09 10 11

MM2

Year

(cfu

/100

mL)

(cfu

/100

mL)

0

5

02 03 04 05 06 07 08 09 10 11

MM6

Year

(cfu

/100

mL)

610

0


Mirs BayWQO for secondary contact recreation subzones :annual geometric mean for depth averagedE. coli < 610 cfu/100mL

Appendix C


0%

100%

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11



0%

100%

02 03 04 05 06 07 08 09 10 11

PM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM1WQO

Year

PM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM4WQO

Year

WQO

PM9

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM9WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


WQO

WQO100%

0%

100%

0%

Levels of compliance with key Water Quality Objectives in the Port Shelter WCZ

PM9

PM4PM1

PM3

Sai Kung

PM2 N

Port Shelter

Appendix C


0%

100%

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11

PM6WQO

Year

PM6WQO

Year



0%

100%

02 03 04 05 06 07 08 09 10 11

PM8WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

PM8WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

PM11

Year

PM11WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

Year

PM7WQO

PM7WQO

WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Port Shelter WCZ(continued)

PM11

PM8

PM7

PM6

Sai Kung

N

Port Shelter

Appendix C








WQO :


WQO :

Non-compliance



0

0.1 WQO

TIN (mg/L)

0

0.021 WQO

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

PM2

Year

NH3-N (mg/L)

WQO

PM30

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

PM4

Year

NH3-N (mg/L)

WQO

NH3-N (mg/L)

PM90

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM9

Year

TIN (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM4

Year

TIN (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

PM10

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM1

Year

TIN (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM3

Year

TIN (mg/L)

WQO

0.1

0

0.021

0

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

PM9

PM4PM1

PM3

Sai Kung

PM2 N

Port Shelter

Appendix C


0

0.021

02 03 04 05 06 07 08 09 10 11

PM6

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM6

Year

TIN (mg/L)

WQO



NH3-N (mg/L)TIN (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

PM8

Year

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM8

Year

WQO



PM70

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM7

Year

WQO




WQO :


WQO :

Non-compliance



0

0.1 WQO

TIN (mg/L)

0

0.021 WQO

NH3-N (mg/L)

PM110

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

PM11

Year

WQO

0.1

0

0.021

0

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1


PM11

PM8

PM7

PM6

Sai Kung

N

Port Shelter

Appendix C



0

5

10

02 03 04 05 06 07 08 09 10 11

PM2

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM7

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM3

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM8

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM4

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM9

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM1

Year

(cfu

/100

mL)

0

5

10

02 03 04 05 06 07 08 09 10 11

PM6

Year

(cfu

/100

mL)

E. coli


Non-compliance

0

610 WQO

0

5

10

02 03 04 05 06 07 08 09 10 11

PM11

Year

(cfu

/100

mL)

PM11

PM8

PM7

PM6

Sai Kung

N

PM9

PM4PM1

PM3

PM2


610

0


Port Shelter

WQO for secondary contact recreation subzones :annual geometric mean for depth averagedE. coli < 610 cfu/100mL

Appendix C



BufferSubzone

HarbourSubzone

Sha Tin TM2

TM4

TM3

TM5

TM6

Tai Po

N

Dissolved Oxygen (DO)(water column average)

0%

100%

02 03 04 05 06 07 08 09 10 11

TM2

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM2

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM3

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM4

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM5

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM6

WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM3

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM4

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM5

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM6

Year

Dissolved Oxygen (DO)Harbour Subzone (TM2 - TM4)



Buffer Subzone (TM5 - TM6)

2. Water column average (surface to 2m above bottom)

2. Water column average (surface to 2m above bottom)

1. Bottom

% sample with water columnaverage DO > 4 mg/L


1. Bottom

WQO : 100% sample with water columnaverage DO > 4 mg/L

% sample with water columnaverage DO > 4 mg/L

WQO

Non-compliance

100% sample with water columnaverage DO > 4 mg/L

WQO :


WQO

WQO

WQO

WQO

WQO

WQO

WQO100%

0%

100%

0%

100%

0%

100%

0%

Levels of compliance with key Water Quality Objectives in the Tolo Harbourand Channel WCZ

Tolo Habour& Channel

Appendix C


0%

100%

02 03 04 05 06 07 08 09 10 11

Dissolved Oxygen (DO)(surface)


0%

100%

02 03 04 05 06 07 08 09 10 11

TM7

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM7

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM8

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM7

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM8

Year

TM8

Year

Dissolved Oxygen (DO)(middle)

Sha Tin

Tai Po

N

TM8

TM7

ChannelSubzone


Channel Subzone (TM7 - TM8)

% sample with surface DO > 4 mg/L

100% sample with surface DO > 4 mg/LWQO :

2. Middle

1. Surface

3. Bottom

100% sample with middle DO > 4 mg/LWQO :


Non-compliance

% sample with middle DO > 4 mg/L


WQO

WQO

WQO

WQO

WQO

WQO

WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Tolo Harbourand Channel WCZ (continued)


WQO100%

0%

Appendix C


0

100

200

02 03 04 05 06 07 08 09 10 11


0

5

10

02 03 04 05 06 07 08 09 10 11

TM6

Year

TM2

Year

0

50

100

02 03 04 05 06 07 08 09 10 11

TM3

Year

0

5

10

02 03 04 05 06 07 08 09 10 11

TM5

Year

0

5

10

02 03 04 05 06 07 08 09 10 11

TM7

Year

0

5

10

02 03 04 05 06 07 08 09 10 11

TM8

Year

E. coli


Non-compliance

0

10

20

02 03 04 05 06 07 08 09 10 11

TM4

Year

(cfu

/100

mL)

(cfu

/100

mL)

(cfu

/100

mL)

(cfu

/100

mL)

(cfu

/100

mL)

(cfu

/100

mL)

(cfu

/100

mL)

BufferSubzone

HarbourSubzone

Sha TinTM2

TM4

TM3

TM5

TM6

Tai Po

N

TM8

TM7

ChannelSubzone


Levels of compliance with key Water Quality Objectives in the Tolo Harbourand Channel WCZ (continued)

Tolo Habour& Channel 0

610 WQO610

0


Appendix C


Chlorophyll-a

TM50%

100%

02 03 04 05 06 07 08 09 10 11

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM2

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM3

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM6

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM4

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM7

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

TM8

Year

BufferSubzone

HarbourSubzone

Sha TinTM2

TM4

TM3

TM5

TM6

Tai Po

N

TM8

TM7

ChannelSubzone

Chlorophyll-a

% sample (S, M, B) withChlorophyll-a < 20 μg/L

Chlorophyll-a < 20 μg/LWQO :

2. Buffer Subzone

1. Harbour Subzone

3. Channel Subzone





2. Buffer Subzone1. Harbour Subzone

3. Channel Subzone

Levels of chlorophyll-a in the Tolo Harbour and Channel WCZ


Appendix C


0

0.021

02 03 04 05 06 07 08 09 10 11

BufferSubzone

HarbourSubzone

Sha TinTM2

TM4

TM3

TM5

TM6

Tai Po

N

TM8

TM7

ChannelSubzone




annual mean for depth-averagedTIN (mg/L)

annual mean for depth-averagedNH3-N (mg/L)


0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM2

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM8

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM3

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM4

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM5

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM6

Year

TIN (mg/L)

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

TM7

Year

TIN (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

TM2

Year

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

TM3

Year

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

TM4

Year

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

TM5

Year

NH3-N (mg/L)

TM60

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

TM7

Year

NH3-N (mg/L)

TM8

Year

NH3-N (mg/L)

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

Levels of total inorganic nitrogen and unionised ammonia in the Tolo Harbourand Channel WCZ


Appendix C


0%

100%

02 03 04 05 06 07 08 09 10 11

SM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM19WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

SM19

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


0%

100%

02 03 04 05 06 07 08 09 10 11

SM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM4WQO

Year



WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Southern WCZ

Hong Kong Island

Kowloon

SM2

SM19

SM1SM4

SM3

N

Lantau Island

Southern



0%

100%

02 03 04 05 06 07 08 09 10 11

SM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM6WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM6WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

SM7

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM7WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


Hong Kong Island

Kowloon

SM5

0%

100%

01 02 03 04 05 06 07 08 09 10 11

SM18WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

SM18

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM9WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM9WQO

Year

Levels of compliance with key Water Quality Objectives in the Southern WCZ(continued)

N

Lantau Island

SM18

SM6

SM7

SM9

Southern

Appendix C


WQO100%

0%

WQO100%

0%

Appendix C


0%

100%

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11

SM20WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM20WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM17WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

SM17

Year



SM10WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM10WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM11WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM11WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM12WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM12WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

SM13

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

SM13WQO

Year

Hong Kong Island

Kowloon




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


WQO

WQO100%

0%

100%

0%


N

SM17

SM13 SM12

SM11

SM10

Lantau Island

SM20

Southern

Appendix C


0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

NH3-N (mg/L)

SM190

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

SM19

Year

TIN (mg/L)

WQO



SM20

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

SM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

SM1SM1

Year

TIN (mg/L)

WQO

SM40

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM4

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

SM30

0.1

0.2

02 03 04 05 06 07 08 09 10 11

SM3

Year

TIN (mg/L)

WQO




WQO :


WQO :

Non-compliance



TIN (mg/L)

NH3-N (mg/L)

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0

0.021 WQO0.021

0


0

0.1 WQO0.1

0Hong Kong Island

Kowloon

SM2

SM19

SM1SM4

SM3

N

Lantau Island

Southern

Hong Kong Island

Kowloon

SM18

SM6

SM5

SM7

SM9




WQO :


WQO :

Non-compliance



TIN (mg/L)

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

SM18

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM18

Year

TIN (mg/L)

WQO

NH3-N (mg/L)

SM70

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM7

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

SM6

Year

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM6

Year

WQO


0

0.021

02 03 04 05 06 07 08 09 10 11

SM5

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM5

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

SM90

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM9

Year

TIN (mg/L)

WQO



0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1


N

Lantau Island

Southern

Appendix C


0

0.1 WQO0.1

0

0

0.021 WQO0.021

0

Appendix C




NH3-N (mg/L)

SM130

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM13

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

SM12

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM12

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

SM11

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM11

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

SM10

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

0.4

02 03 04 05 06 07 08 09 10 11

SM10

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

SM200

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM20

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

SM17

Year

NH3-N (mg/L)

WQO

0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

SM17

Year

TIN (mg/L)

WQO




WQO :


WQO :

Non-compliance



TIN (mg/L)

NH3-N (mg/L)

0

0.1 WQO0.1

0

0

0.021 WQO0.021

0

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1


Hong Kong Island

KowloonN

SM17

SM13 SM12

SM11

SM10

Lantau Island

SM20

Southern


0

5

10

02 03 04 05 06 07 08 09 10 11

SM1

Year

(cfu

/100

mL)

0

10

20

02 03 04 05 06 07 08 09 10 11

SM11

Year

(cfu

/100

mL)

0

25

50

02 03 04 05 06 07 08 09 10 11

SM10

Year

(cfu

/100

mL)

0

50

100

150

02 03 04 05 06 07 08 09 10 11

SM2

Year

(cfu

/100

mL)

E. coli


Non-compliance

Hong Kong Island

Kowloon

SM2SM1



SM10

N

Lantau IslandSM11

Southern

Appendix C



0

610 WQO610

0

WQO100%

0%

WQO100%

0%

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

VM1WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

VM1

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM5WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

VM6

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM6WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


Levels of compliance with key Water Quality Objectives in the Victoria HarbourWCZ

WQO100%

0%

WQO100%

0%

VM2

Hong Kong Island

VM6

VM5

VM4

Kowloon

VM1

N

VictoriaHarbour

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

VM8WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM8WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

VM14

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM14WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM12WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM12WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM7WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

VM7

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

VM15

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

VM15WQO

Year

WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Victoria HarbourWCZ (continued)

Hong Kong Island

Kowloon

N

VM7

VM14

VM15

VM8

VM12

VictoriaHarbour

Appendix C







WQO :


WQO :

Non-compliance



0

0.021

02 03 04 05 06 07 08 09 10 11

VM2

Year

NH3-N (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

VM4

Year

NH3-N (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

VM5

Year

NH3-N (mg/L)

WQO

NH3-N (mg/L)

VM60

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.2

0.4

0.6

02 03 04 05 06 07 08 09 10 11

VM6

Year

TIN (mg/L)

WQO

0

0.2

0.4

0.6

02 03 04 05 06 07 08 09 10 11

VM5

Year

TIN (mg/L)

WQO

0

0.2

0.4

0.6

02 03 04 05 06 07 08 09 10 11

VM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

VM10

0.2

0.4

0.6

02 03 04 05 06 07 08 09 10 11

VM1

Year

TIN (mg/L)

WQO

0

0.2

0.4

0.6

02 03 04 05 06 07 08 09 10 11

VM4

Year

TIN (mg/L)

WQO

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0

0.3 WQO

TIN (mg/L)

0.4

0

0

0.021 WQO

NH3-N (mg/L)

0.021

0


VM2

Hong Kong Island

VM6

VM5

VM4

Kowloon

VM1

N

VictoriaHarbour



0

0.021

02 03 04 05 06 07 08 09 10 11

VM8

Year

NH3-N (mg/L)

WQO

0

0.4

0.8

02 03 04 05 06 07 08 09 10 11

VM8

Year

TIN (mg/L)

WQO




WQO :


WQO :

Non-compliance



NH3-N (mg/L)

VM140

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.4

0.8

02 03 04 05 06 07 08 09 10 11

VM14

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

VM12

Year

NH3-N (mg/L)

WQO

0

0.4

0.8

02 03 04 05 06 07 08 09 10 11

VM12

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

VM70

0.4

0.8

02 03 04 05 06 07 08 09 10 11

VM7

Year

TIN (mg/L)

WQO

NH3-N (mg/L)

VM150

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.4

0.8

02 03 04 05 06 07 08 09 10 11

VM15

Year

TIN (mg/L)

WQO 0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1


Appendix C


0

0.3 WQO

TIN (mg/L)

0.4

0

0

0.021 WQO

NH3-N (mg/L)

0.021

0

Hong Kong Island

Kowloon

N

VM7

VM14

VM15

VM8

VM12

VictoriaHarbour

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

EM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

EM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

EM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

EM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

EM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

EM3WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


N

EM2

EM1

EM3

Hong Kong Island

Kowloon

Junk Bay WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Eastern Buffer WCZ

Eastern Buffer

Appendix C


0

0.021 WQO

NH3-N (mg/L)

0.021

0

0

0.021

02 03 04 05 06 07 08 09 10 11

EM3

Year

NH3-N (mg/L)

WQO

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

EM3

Year

TIN (mg/L)

WQO






WQO :


WQO :

Non-compliance



0

0.021

02 03 04 05 06 07 08 09 10 11

EM2

Year

NH3-N (mg/L)

WQO

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

EM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

EM10

0.2

0.4

02 03 04 05 06 07 08 09 10 11

EM1

Year

TIN (mg/L)

WQO

0 . 0 1

0 . 0 1

0 . 0 1

Levels of compliance with key Water Quality Objectives in the Eastern BufferWCZ (continued)

N

EM2

EM1

EM3

Hong Kong Island

Kowloon

Junk Bay

Eastern Buffer

0

0.3 WQO

TIN (mg/L)

0.4

0

0

0.021 WQO

NH3-N (mg/L)

0.021

0

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

WM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

WM4WQO

Year




2. Depth-averaged

1. Bottom


WQO :

Non-compliance


Levels of compliance with key Water Quality Objectives in the Western BufferWCZ

WQO100%

0%

WQO100%

0%

N

WM1

WM3

WM2

WM4

Kowloon

Hong KongIsland

WesternBuffer

Appendix C







WQO :


WQO :

Non-compliance



0

0.021

02 03 04 05 06 07 08 09 10 11

WM4

Year

NH3-N (mg/L)

WQO

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

WM4

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

WM2

Year

NH3-N (mg/L)

WQO

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

WM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

WM10

0.2

0.4

02 03 04 05 06 07 08 09 10 11

WM1

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

WM3

Year

NH3-N (mg/L)

WQO

0

0.2

0.4

02 03 04 05 06 07 08 09 10 11

WM3

Year

TIN (mg/L)

WQO

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

Levels of compliance with key Water Quality Objectives in the Western BufferWCZ (continued)

0

0.3 WQO

TIN (mg/L)

0.4

0

0

0.021 WQO

NH3-N (mg/L)

0.021

0

N

WM1

WM3

WM2

WM4

Kowloon

Hong KongIsland

WesternBuffer

Appendix C


0

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

0%

100%

02 03 04 05 06 07 08 09 10 11



JM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

JM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

JM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

JM4WQO

Year



0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

JM3JM3

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

JM40

0.1

0.2

0.3

02 03 04 05 06 07 08 09 10 11

JM4

Year

TIN (mg/L)

WQO




2. Depth-averaged

1. Bottom


WQO :


WQO

WQO




WQO :


WQO :

Non-compliance



WQO

0

0.3TIN (mg/L)

WQO

0

0.021NH3-N (mg/L)

JM4

JM3

N

100%

0%

100%

0%

0.3

0

0.021

0

0 . 0 1

0 . 0 1

Levels of compliance with key Water Quality Objectives in the Junk Bay WCZ

Junk Bay

Appendix C



0%

100%

02 03 04 05 06 07 08 09 10 11

DM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

DM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

DM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

DM4WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

DM5WQO

Year


0%

100%

02 03 04 05 06 07 08 09 10 11

DM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

DM2WQO

Year

DM3

DM1

DM2

DO (bottom) not measured, water depth < 3m






2. Depth-averaged

1. Bottom


WQO :

Non-compliance


WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the Deep Bay WCZ

OuterSubzone

DM5

InnerSubzone

DM4

DM1DM2

N

Yuen Long

DM3

Shenzhen

DeepBay

Appendix C


Levels of compliance with key Water Quality Objectives in the Deep Bay WCZ(continued)

0

1

2

3

4

02 03 04 05 06 07 08 09 10 11

WQO



0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

DM2

Year

NH3-N (mg/L)

WQO

0

0.05

0.1

02 03 04 05 06 07 08 09 10 11

DM3

Year

NH3-N (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

DM4

Year

NH3-N (mg/L)

WQO

NH3-N (mg/L)

DM50

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.5

1

02 03 04 05 06 07 08 09 10 11

DM5

Year

TIN (mg/L)

WQO

0

0.5

1

02 03 04 05 06 07 08 09 10 11

DM4

Year

TIN (mg/L)

WQO

0

2

4

6

8

02 03 04 05 06 07 08 09 10 11

DM2

Year

TIN (mg/L)

WQO

0

0.1

0.2

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

DM10

2

4

6

8

02 03 04 05 06 07 08 09 10 11

DM1

Year

TIN (mg/L)

WQO

DM3

Year

TIN (mg/L)

Non-compliance



WQO :


WQO :



TIN (mg/L)

NH3-N (mg/L)

Inner Subzone (DM1 - DM3)

Outer Subzone (DM4 - DM5)




WQO :

TIN (mg/L)

0

0.5 WQO0.5

0

0

0.021 WQO0.021

0

0 . 0 1

0 . 0 1

0

0.7 WQO0.7

0

OuterSubzone

InnerSubzone

DM5

DM4

DM1DM2

Shenzhen

Yuen Long

N

DeepBay

DM3

Shenzhen

Appendix C




0%

100%

02 03 04 05 06 07 08 09 10 11

NM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM1WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM2WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM3WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM5WQO

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM5WQO

Year

WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

NM6

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM6WQO

Year

Non-compliance




2. Depth-averaged

1. Bottom


WQO :


WQO

0%

100%

02 03 04 05 06 07 08 09 10 11

NM8

Year

0%

100%

02 03 04 05 06 07 08 09 10 11

NM8WQO

Year

WQO100%

0%

WQO100%

0%

Levels of compliance with key Water Quality Objectives in the North WesternWCZ

N

NM2NM3

NM5

NM6

NM1

NM8

Tuen Mun

LantauIsland

NorthWestern

Appendix C




Non-compliance




WQO :


WQO :



TIN (mg/L)

NH3-N (mg/L)

0

0.021

02 03 04 05 06 07 08 09 10 11

NM8

Year

NH3-N (mg/L)

WQO

0

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM8

Year

TIN (mg/L)

WQO

NH3-N (mg/L)

NM60

0.021

02 03 04 05 06 07 08 09 10 11

Year

WQO

0

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM6

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

NM2

Year

NH3-N (mg/L)

WQO

0

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM2

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

Year

NH3-N (mg/L)

WQO

NM10

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM1

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

NM3

Year

NH3-N (mg/L)

WQO

0

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM3

Year

TIN (mg/L)

WQO

0

0.021

02 03 04 05 06 07 08 09 10 11

NM5

Year

NH3-N (mg/L)

WQO

0

0.25

0.5

02 03 04 05 06 07 08 09 10 11

NM5

Year

TIN (mg/L)

WQO

0

0.5 WQO0.5

0

0

0.021 WQO0.021

0

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

0 . 0 1

Levels of compliance with key Water Quality Objectives in the North WesternWCZ (continued)

N

NM2NM3

NM5

NM6

NM1

NM8

Tuen Mun

LantauIsland

NorthWestern

Appendix D

MARINE WATER QUALITY IN HONG KONG IN 2011 D - 1

Monitoring Station MM1 MM2 MM3 MM4 MM5 MM6 MM7

1991 1991 1991 1991 1991 1991 1991I I I I I I I

2011 2011 2011 2011 2011 2011 2011Parameter Water Depth 21 21 21 21 21 21 21

Surface - - - - - - -Temperature (℃) Middle - - - - - - -

Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Salinity Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Dissolved Oxygen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Dissolved Oxygen (%) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

pH Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -

Secchi disc depth (m) -Surface - - - - - -

Turbidity (NTU) Middle - - - - - -Bottom - - - - - - -Average - - - - - -Surface - - - - -

Suspended Solids (mg/L) Middle - - - -Bottom - - - -Average - - -Surface - - - -

Volatile suspended solids (mg/L) Middle - - - -Bottom - - - - -Average - - -Surface - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - -

Ammonia nitrogen (mg/L) Middle - - - - - -Bottom - - - - - - -Average - - - - - -Surface - - - -

Unionised Ammonia (mg/L) Middle - - - - -Bottom - - - - - - -Average - - - - - -Surface - - - - - - -

Nitrite nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - -

Nitrate nitrogen (mg/L) Middle - - - - - -Bottom - - - - -Average - - - - - -Surface - - - - - - -

Total inorganic nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - -

Total Kjeldahl nitrogen (mg/L) Middle - - - - - -Bottom - - -Average - - - -Surface - - - - -

Total nitrogen (mg/L) Middle - - - -Bottom - - - -Average - - - - -Surface

Orthophosphate phosphorus (mg/L) MiddleBottomAverageSurface - - - - -

Total phosphorus (mg/L) Middle - - -BottomAverageSurface - - -

Silica (mg/L) Middle -BottomAverageSurface - -

Chlorophyll-a (μg/L) Middle -Bottom - - -Average -Surface - - - - - - -

E. coli (cfu/100mL) Middle - - - - - -Bottom - - - - - -Average - - - - - - -Surface - - - - - - -

Faecal coliforms (cfu/100mL) Middle - - - - - - -Bottom - - - - - - -Average - - - - - -

Note: 1. Results of the Seasonal Kendall Test statistically significant at p < 0.05Note: 2. - indicates no significant trendNote: 3. significant increaseNote: 4. significant decrease

Results of the Seasonal Kendall Test for water quality trends in the Mirs Bay WCZ, 1991 - 2011

Monitoring Period

Appendix D

MARINE WATER QUALITY IN HONG KONG IN 2011 D – 2

MM8 MM13 MM14 MM15 MM16 MM17 MM19

1991 1991 1994 1994 1994 1986 2001I I I I I I I


Surface - - - - - -Temperature (℃) Middle - - - - - -

Bottom - - - - - -Average - - - - - -Surface - - - - - - -

Salinity Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - -

Dissolved Oxygen (mg/L) Middle - - - - - -Bottom - - - - - - -Average - - - - - -Surface - - - - - - -

Dissolved Oxygen (%) Middle - - - - - - -Bottom - - - - - -Average - - - - - - -Surface - - - -

pH Middle - - -Bottom - -Average - - - -

Secchi disc depth (m) - -Surface - - - - - -

Turbidity (NTU) Middle - - - - - -Bottom - - - - -Average - - - - - -Surface - - - - - -

Suspended Solids (mg/L) Middle - - - - - - -Bottom - - - - -Average - - - - - -Surface - - - - - - -

Volatile suspended solids (mg/L) Middle - - - - - - -Bottom - - - - -Average - - -Surface - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - - -Bottom - - - - -Average - - - - -Surface - - - - - - -

Ammonia nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Unionised Ammonia (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Nitrite nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Nitrate nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - -Surface - - - - - - -

Total inorganic nitrogen (mg/L) Middle - - - - - - -Bottom - - - - - -Average - - - - - - -Surface - - - - -

Total Kjeldahl nitrogen (mg/L) Middle - - - -Bottom - - - -Average - - - - -Surface - - - -

Total nitrogen (mg/L) Middle - - - - - -Bottom - - - -Average - - -Surface -

Orthophosphate phosphorus (mg/L) Middle - -Bottom - -Average - -Surface - - - -

Total phosphorus (mg/L) Middle - - - -Bottom - - - -Average - - -Surface - - - - -

Silica (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - -

Chlorophyll-a (μg/L) Middle - - - - -Bottom - - - - - -Average - - - - -Surface - - - - - - -

E. coli (cfu/100mL) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - -

Faecal coliforms (cfu/100mL) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -


Results of the Seasonal Kendall Test for water quality trends in the Mirs Bay WCZ, 1986 - 2011 (continued)

Monitoring Period

Monitoring Station

Appendix D


PM1 PM2 PM3 PM4 PM6 PM7 PM8 PM9 PM11

1986 1986 1986 1986 1986 1986 1986 1986 1993I I I I I I I I I

2011 2011 2011 2011 2011 2011 2011 2011 2011Parameter Water Depth 26 26 26 26 26 26 26 26 19

Surface - -Temperature (℃) Middle - -

Bottom -Average -Surface - - - - - - - -

Salinity Middle - - - - - - - - -Bottom - - - - - - - - -Average - - - - - - - - -Surface - -

Dissolved Oxygen (mg/L) Middle - - - - - - - - -Bottom - - - - - - - -Average - - - - - - - - -Surface - - - - - - - - -

Dissolved Oxygen (%) Middle - - - - - - - -Bottom - - - - -Average - - - - - - - -Surface

pH Middle -Bottom - -Average

Secchi disc depth (m) - - - - - -Surface -

Turbidity (NTU) Middle - -Bottom -Average -Surface - - -

Suspended Solids (mg/L) Middle - - - -Bottom - - - - - -Average - - -Surface - - - - - - - - -

Volatile suspended solids (mg/L) Middle - - - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - - - - - -Bottom - - - - - - - - -Average - - - - - - -Surface - - - - - - - -

Ammonia nitrogen (mg/L) Middle - - - - - - - - -Bottom - - - - - - - - -Average - - - - - - - - -Surface - - - - - - -

Unionised Ammonia (mg/L) Middle - - - - - -Bottom - - - - - - - -Average - - - - - -Surface - - - - - - - - -

Nitrite nitrogen (mg/L) Middle - - - - - - - - -Bottom - - - - - - - - -Average - - - - - - - -Surface - - - - - - - - -

Nitrate nitrogen (mg/L) Middle - - - - - - - -Bottom - - - - -Average - - - - - -Surface - - - - - - - - -

Total inorganic nitrogen (mg/L) Middle - - - - - - - - -Bottom - - - - - - - - -Average - - - - - - - - -Surface -

Total Kjeldahl nitrogen (mg/L) Middle -Bottom -Average -Surface -

Total nitrogen (mg/L) Middle -Bottom -Average -Surface

Orthophosphate phosphorus (mg/L) Middle - - -Bottom - - -Average -Surface - - - - -

Total phosphorus (mg/L) Middle - - - - -Bottom -AverageSurface - - -

Silica (mg/L) Middle - -Bottom - - - - - -Average - - -Surface - -

Chlorophyll-a (μg/L) Middle - -Bottom - -Average - - -Surface - - - - - - -

E. coli (cfu/100mL) Middle - - - - - - -Bottom - - - - - - - -Average - - - - - -Surface - - - - - - - -

Faecal coliforms (cfu/100mL) Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - -


Results of the Seasonal Kendall Test for water quality trends in the Port Shelter WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


TM2 TM3 TM4 TM5 TM6 TM7 TM8

1986 1986 1986 1988 1986 1988 1986I I I I I I I


SurfaceTemperature (℃) Middle NA NA

BottomAverageSurface

Salinity Middle NA - NA - - -Bottom - - - - -Average - -Surface -

Dissolved Oxygen (mg/L) Middle NA - - NA - - -Bottom - -Average - - - - - - -Surface -

Dissolved Oxygen (%) Middle NA - - NA -Bottom -Average - - - - - -Surface

pH Middle NA NABottomAverage


Turbidity (NTU) Middle NA - - NA -Bottom - - -Average - - - - -Surface

Suspended Solids (mg/L) Middle NA NABottom - -AverageSurface - -

Volatile suspended solids (mg/L) Middle NA NA - -Bottom - - - -Average - - -Surface

5-day Biochemical Oxygen Demand (mg/L) Middle NA NABottom - -AverageSurface

Ammonia nitrogen (mg/L) Middle NA NA -Bottom -Average -Surface

Unionised Ammonia (mg/L) Middle NA NA -Bottom -AverageSurface - - - - -

Nitrite nitrogen (mg/L) Middle NA NA - -Bottom - -Average -Surface

Nitrate nitrogen (mg/L) Middle NA NA -Bottom -Average -Surface

Total inorganic nitrogen (mg/L) Middle NA NA -Bottom -Average -Surface

Total Kjeldahl nitrogen (mg/L) Middle NA NABottomAverageSurface

Total nitrogen (mg/L) Middle NA NABottomAverageSurface

Orthophosphate phosphorus (mg/L) Middle NA NABottom -AverageSurface

Total phosphorus (mg/L) Middle NA NABottomAverageSurface - - - - - - -

Silica (mg/L) Middle NA - - NA -Bottom - - - - -Average - - - - - -Surface - - -

Chlorophyll-a (μg/L) Middle NA - - NA - - -Bottom - - - - -Average - - - - -Surface - -

E. coli (cfu/100mL) Middle NA NA - -Bottom - -Average -Surface - - - - -

Faecal coliforms (cfu/100mL) Middle NA NA - -Bottom - - -Average - - -

Note: 1. Results of the Seasonal Kendall Test statistically significant at p < 0.05Note: 2. - indicates no significant trendNote: 3. NA (Not Applicable) indicates the measurement was not made due to shallow waterNote: 4. significant increaseNote: 5. significant decrease

Results of the Seasonal Kendall Test for water quality trends in the Tolo Habour and Channel WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM9

1986 1986 1986 1986 1986 1986 1986 1988I I I I I I I I

2011 2011 2011 2011 2011 2011 2011 2011Parameter Water Depth 26 26 26 26 26 26 26 24

Surface - -Temperature (℃) Middle -

Bottom - -Average - - -Surface - - - - - - - -

Salinity Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - - -

Dissolved Oxygen (mg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - - -

Dissolved Oxygen (%) Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - - -Surface - -

pH Middle - - -Bottom - -Average - - -

Secchi disc depth (m) - - - - - - -Surface - - - - -

Turbidity (NTU) Middle - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - - - - -

Suspended Solids (mg/L) Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - - - -

Volatile suspended solids (mg/L) Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - - -

Ammonia nitrogen (mg/L) Middle - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - - -

Unionised Ammonia (mg/L) Middle - - - - - - -Bottom - - - - - - - -Average - - - - - - -Surface

Nitrite nitrogen (mg/L) Middle -Bottom - - - - -Average -Surface - -

Nitrate nitrogen (mg/L) Middle - -Bottom - - - - -Average -Surface - - -

Total inorganic nitrogen (mg/L) Middle - - -Bottom - - - - -Average - - -Surface -

Total Kjeldahl nitrogen (mg/L) Middle -BottomAverage -Surface - - - -

Total nitrogen (mg/L) Middle - - - - -Bottom - - - -Average - - - - -Surface - -

Orthophosphate phosphorus (mg/L) Middle - - - - -Bottom - - - - - -Average - -Surface -

Total phosphorus (mg/L) Middle -BottomAverageSurface - - - - - - -

Silica (mg/L) Middle - - - - - - -Bottom - - - - - - - -Average - - - - - - -Surface - - - - - -

Chlorophyll-a (μg/L) Middle - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - - - - -

E. coli (cfu/100mL) Middle - - - - - - - -Bottom - - - - - - -Average - - - - - - -Surface - - - - -

Faecal coliforms (cfu/100mL) Middle - - - - -Bottom - - - - -Average - - - -


Monitoring Period

Monitoring Station

Results of the Seasonal Kendall Test for water quality trends in the Southern WCZ, 1986 - 2011

Appendix D


SM10 SM11 SM12 SM13 SM17 SM18 SM19 SM20

1986 1986 1986 1986 1989 1989 1989 1999I I I I I I I I

2011 2011 2011 2011 2011 2011 2011 2011Parameter Water Depth 26 26 26 26 23 23 23 13

Surface - -Temperature (℃) Middle NA - -

Bottom - - -Average - -Surface - - - - - - - -

Salinity Middle NA - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - - - - - -

Dissolved Oxygen (mg/L) Middle NA - - - - - - -Bottom - - - - - - - -Average - - - - - -Surface - - - - - - - -

Dissolved Oxygen (%) Middle NA - - - - - - -Bottom - - - - - - - -Average - - - - - - - -Surface - -

pH Middle NA - -Bottom - -Average - -

Secchi disc depth (m) - - - - - - -Surface - - - - - -

Turbidity (NTU) Middle NA - - - - -Bottom - - - - - -Average - - - - - - -Surface - - - - - - - -

Suspended Solids (mg/L) Middle NA - - - - - -Bottom - - - - - - -Average - - - - - - - -Surface - - - - - - - -

Volatile suspended solids (mg/L) Middle NA - - - - - - -Bottom - - - - - - -Average - - - - - - - -Surface - - - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle NA - - - - - - -Bottom - - - - - - -Average - - - - - - - -Surface - - - - - - - -

Ammonia nitrogen (mg/L) Middle NA - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - - - - -

Unionised Ammonia (mg/L) Middle NA - - - - - - -Bottom - - - - - - -Average - - - - - - - -Surface - -

Nitrite nitrogen (mg/L) Middle NA - -Bottom - - - -Average - -Surface - - -

Nitrate nitrogen (mg/L) Middle NA - - -Bottom - - - -Average - - -Surface - - -

Total inorganic nitrogen (mg/L) Middle NA - - - -Bottom - - - -Average - - -Surface - -

Total Kjeldahl nitrogen (mg/L) Middle NA - - -Bottom -Average - -Surface - - - - - - -

Total nitrogen (mg/L) Middle NA - - - - - -Bottom - - - - -Average - - - - - - -Surface -

Orthophosphate phosphorus (mg/L) Middle NA - -Bottom - - - -Average - -Surface - -

Total phosphorus (mg/L) Middle NA - -Bottom -Average -Surface - - - - - - -

Silica (mg/L) Middle NA - - - - - -Bottom - - - - - - - -Average - - - - - - -Surface - - - -

Chlorophyll-a (μg/L) Middle NA - - - -Bottom - - - - - - -Average - - - - -Surface - - - - - - -

E. coli (cfu/100mL) Middle NA - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - - - - -

Faecal coliforms (cfu/100mL) Middle NA - - - - - - -Bottom - - - - - -Average - - - - - - -


Results of the Seasonal Kendall Test for water quality trends in the Southern WCZ, 1986 - 2011 (continued)

Monitoring Period

Monitoring Station

Appendix D


VM1 VM2 VM4 VM5 VM6

1988 1988 1988 1986 1988I I I I I

2011 2011 2011 2011 2011Parameter Water Depth 24 24 24 26 24

SurfaceTemperature (℃) Middle

BottomAverageSurface - -

Salinity Middle - - -Bottom -Average - -Surface - - -

Dissolved Oxygen (mg/L) MiddleBottomAverageSurface

Dissolved Oxygen (%) MiddleBottomAverageSurface

pH MiddleBottomAverage

Secchi disc depth (m)Surface - - - -

Turbidity (NTU) Middle - - - - -Bottom - - - - -Average - - - - -Surface

Suspended Solids (mg/L) MiddleBottom -AverageSurface - -

Volatile suspended solids (mg/L) Middle - - -Bottom -Average -Surface - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - -Bottom - - -Average - - -Surface

Ammonia nitrogen (mg/L) MiddleBottomAverageSurface

Unionised Ammonia (mg/L) MiddleBottomAverageSurface - - - - -

Nitrite nitrogen (mg/L) Middle - - - - -Bottom - - - -Average - - - - -Surface

Nitrate nitrogen (mg/L) Middle -Bottom - - -Average -Surface - -

Total inorganic nitrogen (mg/L) Middle - -Bottom -Average - -Surface

Total Kjeldahl nitrogen (mg/L) MiddleBottomAverageSurface

Total nitrogen (mg/L) MiddleBottomAverageSurface

Orthophosphate phosphorus (mg/L) MiddleBottomAverageSurface

Total phosphorus (mg/L) MiddleBottomAverageSurface - -

Silica (mg/L) Middle - -Bottom -Average - -Surface - - - -

Chlorophyll-a (μg/L) Middle - - -Bottom - - -Average - - -Surface - -

E. coli (cfu/100mL) Middle -Bottom - - -Average -Surface - -

Faecal coliforms (cfu/100mL) Middle - -Bottom - - -Average - -


Results of the Seasonal Kendall Test for water quality trends in the Victoria Harbour WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


VM7 VM8 VM12 VM14 VM15

1986 1986 1986 1986 1993I I I I I


Surface -Temperature (℃) Middle -

Bottom -Average -Surface - - - - -

Salinity Middle - - - - -Bottom - - - - -Average - - - - -Surface - - -

Dissolved Oxygen (mg/L) Middle -Bottom -Average -Surface - -

Dissolved Oxygen (%) Middle -Bottom -Average -Surface -

pH Middle -Bottom -Average -

Secchi disc depth (m)Surface - - -

Turbidity (NTU) Middle - - - -Bottom - - - -Average - - -Surface - -

Suspended Solids (mg/L) Middle - -Bottom - - -Average - -Surface - - - -

Volatile suspended solids (mg/L) Middle - - -Bottom - - - -Average - - -Surface - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - -Bottom - - - -Average - - -Surface

Ammonia nitrogen (mg/L) MiddleBottom - -AverageSurface - -

Unionised Ammonia (mg/L) Middle -Bottom -Average -Surface

Nitrite nitrogen (mg/L) Middle -Bottom - - -Average -Surface

Nitrate nitrogen (mg/L) MiddleBottom -AverageSurface - - -

Total inorganic nitrogen (mg/L) Middle - -Bottom - -Average - - -Surface

Total Kjeldahl nitrogen (mg/L) MiddleBottomAverageSurface -

Total nitrogen (mg/L) Middle -BottomAverage -Surface -

Orthophosphate phosphorus (mg/L) Middle -BottomAverage -Surface

Total phosphorus (mg/L) MiddleBottomAverageSurface - - -

Silica (mg/L) Middle - - - -Bottom - - - -Average - - -Surface - - - -

Chlorophyll-a (μg/L) Middle - - - - -Bottom - - - - -Average - - - - -Surface -

E. coli (cfu/100mL) Middle - -Bottom - -Average -Surface - - -

Faecal coliforms (cfu/100mL) Middle - - -Bottom - -Average - - -


Results of the Seasonal Kendall Test for water quality trends in the Victoria Harbour WCZ, 1986 - 2011 (continued)

Monitoring Period

Monitoring Station

Appendix D


EM1 EM2 EM3

1986 1986 1988I I I

2011 2011 2011Parameter Water Depth 26 26 24


BottomAverageSurface -

Salinity Middle -Bottom -Average - -Surface - - -

Dissolved Oxygen (mg/L) Middle - - -Bottom - - -Average - - -Surface - -

Dissolved Oxygen (%) Middle -Bottom - -Average -Surface - -

pH Middle -BottomAverage -

Secchi disc depth (m) - - -Surface

Turbidity (NTU) Middle -BottomAverageSurface - -

Suspended Solids (mg/L) Middle - -Bottom - -Average - -Surface - - -

Volatile suspended solids (mg/L) Middle - -Bottom - - -Average - -Surface - -

5-day Biochemical Oxygen Demand (mg/L) Middle -Bottom - -Average - -Surface

Ammonia nitrogen (mg/L) MiddleBottom -AverageSurface

Unionised Ammonia (mg/L) MiddleBottomAverageSurface - -

Nitrite nitrogen (mg/L) Middle -BottomAverageSurface - - -

Nitrate nitrogen (mg/L) Middle - - -Bottom - - -Average - - -Surface -

Total inorganic nitrogen (mg/L) Middle -Bottom -Average -Surface





Silica (mg/L) Middle - - -Bottom - - -Average - - -Surface - - -

Chlorophyll-a (μg/L) Middle - - -Bottom - - -Average - - -Surface

E. coli (cfu/100mL) MiddleBottomAverageSurface

Faecal coliforms (cfu/100mL) MiddleBottomAverage


Results of the Seasonal Kendall Test for water quality trends in the Eastern Buffer WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


WM1 WM2 WM3 WM4

1988 1988 1986 1986I I I I

2011 2011 2011 2011Parameter Water Depth 24 24 26 26



Salinity Middle - - -Bottom - - -Average - -Surface - - - -

Dissolved Oxygen (mg/L) Middle - - - -Bottom - - - -Average - - - -Surface - - - -

Dissolved Oxygen (%) Middle - - - -Bottom - - - -Average - - - -Surface -


Secchi disc depth (m) - - -Surface - - - -

Turbidity (NTU) Middle - - -Bottom - - -Average - - -Surface - - -

Suspended Solids (mg/L) Middle - - - -Bottom - - -Average - - - -Surface - - - -

Volatile suspended solids (mg/L) Middle - - - -Bottom - - - -Average - - - -Surface - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - -Bottom - - - -Average - - - -Surface - - -

Ammonia nitrogen (mg/L) Middle - -Bottom - - -Average - -Surface - - - -

Unionised Ammonia (mg/L) Middle - - -Bottom - -Average - - -Surface

Nitrite nitrogen (mg/L) Middle -Bottom - - -Average - -Surface -

Nitrate nitrogen (mg/L) Middle -Bottom - -Average -Surface -

Total inorganic nitrogen (mg/L) Middle -Bottom - - -Average -Surface

Total Kjeldahl nitrogen (mg/L) MiddleBottomAverageSurface -

Total nitrogen (mg/L) Middle -BottomAverageSurface - -

Orthophosphate phosphorus (mg/L) Middle -Bottom - -Average - -Surface


Silica (mg/L) Middle - - - -Bottom - - - -Average - -Surface -

Chlorophyll-a (μg/L) Middle -Bottom -Average -Surface -

E. coli (cfu/100mL) Middle -Bottom -Average -Surface -

Faecal coliforms (cfu/100mL) Middle -Bottom -Average -


Results of the Seasonal Kendall Test for water quality trends in the Western Buffer WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


JM3 JM4

1986 1986I I

2011 2011Parameter Water Depth 26 26



Salinity Middle - -Bottom - -Average - -Surface - -

Dissolved Oxygen (mg/L) MiddleBottom -Average - -Surface -

Dissolved Oxygen (%) MiddleBottomAverageSurface


Secchi disc depth (m) - -Surface

Turbidity (NTU) MiddleBottomAverageSurface -

Suspended Solids (mg/L) Middle - -Bottom - -Average - -Surface - -

Volatile suspended solids (mg/L) Middle - -Bottom - -Average - -Surface - -

5-day Biochemical Oxygen Demand (mg/L) Middle - -Bottom -Average - -Surface

Ammonia nitrogen (mg/L) MiddleBottomAverageSurface

Unionised Ammonia (mg/L) MiddleBottomAverageSurface - -

Nitrite nitrogen (mg/L) Middle -Bottom -Average - -Surface -

Nitrate nitrogen (mg/L) Middle - -Bottom - -Average - -Surface

Total inorganic nitrogen (mg/L) MiddleBottomAverageSurface





Silica (mg/L) Middle - -Bottom - -Average - -Surface - -

Chlorophyll-a (μg/L) Middle - -Bottom - -Average - -Surface

E. coli (cfu/100mL) MiddleBottomAverageSurface - -

Faecal coliforms (cfu/100mL) Middle -BottomAverage - -


Results of the Seasonal Kendall Test for water quality trends in the Junk Bay WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


DM1 DM2 DM3 DM4 DM5

1986 1986 1986 1986 1991I I I I I


Surface -Temperature (℃) Middle NA NA NA NA

Bottom NA NA NAAverage -Surface - -

Salinity Middle NA NA NA NA -Bottom NA NA NA - -Average - - -Surface - -

Dissolved Oxygen (mg/L) Middle NA NA NA NA -Bottom NA NA NA -Average - -Surface - -

Dissolved Oxygen (%) Middle NA NA NA NA -Bottom NA NA NA -Average - -Surface

pH Middle NA NA NA NABottom NA NA NAAverage

Secchi disc depth (m) - - - -Surface - -

Turbidity (NTU) Middle NA NA NA NABottom NA NA NA - -Average - - - -Surface - - - -

Suspended Solids (mg/L) Middle NA NA NA NA -Bottom NA NA NA -Average - - - -Surface - - - -

Volatile suspended solids (mg/L) Middle NA NA NA NA -Bottom NA NA NA - -Average - - - -Surface - -

5-day Biochemical Oxygen Demand (mg/L) Middle NA NA NA NA -Bottom NA NA NA - -Average - -Surface

Ammonia nitrogen (mg/L) Middle NA NA NA NABottom NA NA NAAverageSurface - - - -

Unionised Ammonia (mg/L) Middle NA NA NA NA -Bottom NA NA NA -Average - - - -Surface

Nitrite nitrogen (mg/L) Middle NA NA NA NABottom NA NA NAAverageSurface - -

Nitrate nitrogen (mg/L) Middle NA NA NA NABottom NA NA NAAverage - -Surface

Total inorganic nitrogen (mg/L) Middle NA NA NA NABottom NA NA NAAverageSurface - - - -

Total Kjeldahl nitrogen (mg/L) Middle NA NA NA NA -Bottom NA NA NA - -Average - - - -Surface - -

Total nitrogen (mg/L) Middle NA NA NA NA -Bottom NA NA NA -Average - -Surface - - -

Orthophosphate phosphorus (mg/L) Middle NA NA NA NA -Bottom NA NA NA -Average - - -Surface - - -

Total phosphorus (mg/L) Middle NA NA NA NABottom NA NA NA -Average - - -Surface - - -

Silica (mg/L) Middle NA NA NA NA -Bottom NA NA NA - -Average - - - - -Surface - -

Chlorophyll-a (μg/L) Middle NA NA NA NABottom NA NA NAAverage - -Surface - - - -

E. coli (cfu/100mL) Middle NA NA NA NA -Bottom NA NA NA -Average - - - -Surface - - -

Faecal coliforms (cfu/100mL) Middle NA NA NA NA -Bottom NA NA NA -Average - - -


Results of the Seasonal Kendall Test for water quality trends in the Deep Bay WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix D


NM1 NM2 NM3 NM5 NM6 NM8

1988 1986 1986 1988 1991 1999I I I I I I

2011 2011 2011 2011 2011 2011Parameter Water Depth 24 26 26 24 21 13

Surface - - - - - -Temperature (℃) Middle - - - - - -

Bottom - - - - - -Average - - - - - -Surface - - - - -

Salinity Middle - - - - -Bottom - - - -Average - - -Surface - - - - -

Dissolved Oxygen (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - -Surface - - - - - -

Dissolved Oxygen (%) Middle - - - - - -Bottom - - - - -Average - - - - - -Surface - -

pH Middle -Bottom -Average - -


Turbidity (NTU) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - -

Suspended Solids (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - -

Volatile suspended solids (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface - -

Ammonia nitrogen (mg/L) Middle - -Bottom - -Average - -Surface - - - - -

Unionised Ammonia (mg/L) Middle - - - - - -Bottom - - - - - -Average - - - - - -Surface

Nitrite nitrogen (mg/L) Middle -Bottom - -Average -Surface - - -

Nitrate nitrogen (mg/L) Middle - - -Bottom - - - - -Average - - - -Surface -

Total inorganic nitrogen (mg/L) Middle - -Bottom - - -Average - - -Surface - - -

Total Kjeldahl nitrogen (mg/L) Middle - - - -Bottom - -Average - -Surface - - - - - -

Total nitrogen (mg/L) Middle - - - - - -Bottom - - - -Average - - - - - -Surface - - - -

Orthophosphate phosphorus (mg/L) Middle - - - - -Bottom - -Average - - -Surface - -

Total phosphorus (mg/L) Middle - -Bottom -Average -Surface - - -

Silica (mg/L) Middle - - - - -Bottom - -Average - - -Surface - - -

Chlorophyll-a (μg/L) Middle - - -Bottom - - -Average - - -Surface - - - - -

E. coli (cfu/100mL) Middle - - - -Bottom - - - -Average - - - -Surface - - -

Faecal coliforms (cfu/100mL) Middle - - - -Bottom - - - -Average - - - -


Results of the Seasonal Kendall Test for water quality trends in the North Western WCZ, 1986 - 2011

Monitoring Period

Monitoring Station

Appendix E

MARINE WATER QUALITY IN HONG KONG IN 2011 E - 1

BufferSubzone

ChannelSubzone

Parameter TS2 TS3 TS4 TS5 SS1 SS2 SS3 SS410 10 10 10 10 10 10 1069 80 66 88 73 80 75 86

(58 - 81) (65 - 98) (53 - 76) (80 - 97) (61 - 93) (62 - 94) (66 - 83) (69 - 98)-298 -295 -301 -340 -175 -184 -181 -174

(-354 - -241) (-348 - -258) (-376 - -231) (-380 - -262) (-382 - -82) (-362 - -88) (-366 - -64) (-385 - -68)37 34 40 31 58 49 51 47

(32 - 40) (29 - 43) (30 - 61) (28 - 37) (47 - 63) (46 - 60) (40 - 54) (42 - 55)Total Volatile Soilds (%w/w) 8.7 8.5 8.3 9.9 5.4 6.3 6.4 6.1

(7.6 - 10.0) (6.8 - 10.0) (4.7 - 9.6) (9.4 - 11.0) (4.6 - 6.2) (5.4 - 7.0) (5.8 - 8.5) (4.9 - 7.1)20800 19900 18000 17400 9670 11880 15180 13900

(17000 - 24000) (15000 - 23000) (14000 - 21000) (15000 - 20000) (7700 - 12000) (9800 - 14000) (9800 - 18000) (11000 - 16000)0.9 0.7 1.0 0.8 0.9 0.7 0.9 0.6

(0.7 - 1.1) (0.6 - 0.8) (0.8 - 1.3) (0.7 - 1.0) (0.7 - 1.0) (0.6 - 0.9) (0.6 - 1.1) (0.5 - 0.7)6.7 2.8 7.7 12.3 6.3 4.5 5.1 3.4

(1.0 - 13.0) (<0.1 - 6.7) (3.2 - 15.0) (7.6 - 21.0) (2.2 - 15.0) (0.1 - 6.8) (0.8 - 11.0) (1.0 - 8.8)560 530 620 710 370 450 380 440

(420 - 690) (350 - 630) (400 - 810) (590 - 870) (210 - 440) (290 - 600) (320 - 470) (260 - 710)170 160 170 200 220 220 210 200

(140 - 190) (140 - 190) (130 - 190) (160 - 230) (110 - 290) (160 - 290) (150 - 240) (150 - 290)56 57 71 76 8 14 15 22

(8 - 120) (10 - 160) (11 - 220) (21 - 170) (5 - 15) (1 - 44) (3 - 55) (2 - 73)0.2 0.2 0.2 0.2 <0.1 0.1 0.1 0.1

(0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.2) (0.1 - <0.1) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2)8.6 9.4 7.0 6.0 6.8 8.4 7.1 7.8

(5.9 - 10.0) (7.4 - 11.0) (5.7 - 8.0) (5.3 - 6.6) (6.1 - 7.9) (7.9 - 9.5) (5.8 - 8.4) (7.1 - 8.9)0.5 0.6 0.4 0.3 <0.1 <0.1 <0.1 <0.1

(0.2 - 0.8) (0.3 - 0.7) (0.2 - 0.5) (0.3 - 0.3) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1)25 24 22 33 23 31 31 37

(19 - 27) (20 - 29) (16 - 27) (31 - 37) (20 - 28) (27 - 38) (25 - 39) (31 - 47)32 36 21 21 10 19 18 31

(15 - 50) (24 - 59) (15 - 36) (17 - 25) (9 - 13) (16 - 22) (14 - 25) (26 - 38)79 88 58 49 26 34 34 41

(66 - 89) (76 - 99) (43 - 68) (46 - 54) (22 - 31) (30 - 41) (28 - 46) (32 - 46)0.07 0.07 0.06 0.06 0.05 0.09 0.10 0.13

(0.05 - 0.10) (0.05 - 0.10) (0.05 - 0.07) (0.05 - 0.08) (0.05 - 0.06) (0.06 - 0.13) (0.07 - 0.15) (0.10 - 0.20)16 15 15 24 16 21 21 22

(12 - 21) (12 - 20) (11 - 24) (19 - 31) (14 - 21) (18 - 26) (17 - 26) (19 - 25)0.4 0.5 0.2 <0.2 <0.2 0.2 <0.2 0.4

(0.2 - 0.6) (0.3 - 0.7) (0.2 - 0.3) (0.2 - <0.2) (0.2 - <0.2) (0.2 - 0.3) (0.2 - <0.2) (0.3 - 0.4)210 250 140 120 67 94 87 110

(130 - 320) (140 - 370) (82 - 190) (110 - 150) (51 - 81) (77 - 110) (68 - 120) (94 - 140)18 18 18 18 18 18 18 18

(18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18)90 90 93 95 94 98 95 99

(90 - 90) (90 - 94) (90 - 110) (90 - 140) (90 - 120) (90 - 150) (90 - 110) (90 - 160)46 47 39 55 61 73 60 110

(24 - 63) (26 - 69) (24 - 65) (28 - 72) (25 - 230) (34 - 210) (22 - 130) (57 - 160)Note: 1

23

4

5

6 Low and high molecular weight PAHs results are derived from the summation of the corresponding congeners. If the concentration of acongener is below report limit (RL), the result will be taken as 0.5xRL in the calculation.

Summary statistics for bottom sediment quality in the Tolo Harbour and Channel and SouthernWCZs, 2007 - 2011

Arsenic (mg/kg)

Chemical Oxygen Demand (mg/kg)

Total Carbon (%w/w)

Ammonical Nitrogen (mg/kg)

West LammaChannel

Tolo Harbour and Channel

Harbour Subzone

Hong Kong Island

Number of samples

Particle Size Fractionation <63µm (%w/w)

Electrochemical Potential (mV)

(South)

Total Solids (%w/w)

Total Kjeldahl Nitrogen (mg/kg)

Total Phosphorus (mg/kg)

Total Sulphide (mg/kg)

Total Cyanide (mg/kg)

Cadmium (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)

Mercury (mg/kg)

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)

Total Polychlorinated Biphenyls (PCBs)(µg/kg) (3)

Low Molecular Weight Polycylic AromaticHydrocarbons (PAHs) (µg/kg) (4)

High Molecular Weight Polycylic AromaticHydrocarbons (PAHs) (µg/kg) (5) (6)

High molecular weight polyaromatic hydrocarbons (PAHs) include 10 congeners of molecular weight above 200, namely : Fluoranthene,Pyrene, Benzo(a)anthracene, Chrysene, Benzo(b)fluoranthene, Benzo(k)fluoranthene, Benzo(a)pyrene, Dibenzo(a,h)anthracene,Benzo(g,h,i)perylene and Indeno(1,2,3-cd)pyrene.

Data presented are arithmetic means ; data in brackets indicate ranges.All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), the resultwill be taken as 0.5xRL in the calculation.

Low molecular weight polyaromatic hydrocarbons (PAHs) include 6 congeners of molecular weight below 200, namely : Acenaphthene,Acenaphthylene, Anthracene, Flourene, Naphthalene and Phenanthrene.

Appendix E


Junk Bay

(East) (South)Parameter SS5 SS6 JS2 DS1 DS2 DS3 DS4

10 10 10 10 10 10 1091 69 85 60 63 77 63

(85 - 98) (52 - 87) (68 - 96) (18 - 94) (17 - 82) (44 - 95) (40 - 80)-185 -140 -167 -228 -191 -220 -195

(-258 - -115) (-270 - -71) (-265 - -115) (-298 - -154) (-228 - -105) (-396 - -115) (-370 - -93)39 64 44 51 47 48 55

(38 - 41) (62 - 66) (40 - 51) (37 - 61) (41 - 53) (42 - 67) (48 - 63)7.2 3.8 6.3 5.9 6.3 6.3 5.5

(6.8 - 7.7) (3.2 - 4.5) (5.6 - 7.0) (3.3 - 8.8) (5.0 - 8.5) (3.2 - 8.1) (4.7 - 6.7)14100 9310 14300 21900 17500 12880 13200

(12000 - 17000) (6900 - 18000) (11000 - 18000) (16000 - 29000) (13000 - 22000) (9900 - 16000) (10000 - 16000)0.6 0.5 0.7 0.7 0.8 0.5 0.6

(0.5 - 0.6) (0.4 - 0.6) (0.6 - 0.8) (0.5 - 1.2) (0.5 - 1.3) (0.4 - 0.6) (0.4 - 0.9)7.9 4.3 3.5 120.2 8.8 1.6 5.1

(0.1 - 15.0) (1.2 - 9.4) (0.1 - 8.2) (12.0 - 600.0) (0.1 - 42.0) (<0.1 - 4.5) (0.1 - 14.0)480 320 460 620 420 310 260

(300 - 580) (260 - 500) (320 - 550) (320 - 1700) (260 - 680) (160 - 450) (100 - 490)190 200 190 330 280 200 150

(130 - 220) (180 - 240) (150 - 210) (230 - 530) (120 - 490) (100 - 280) (60 - 220)30 3 22 300 94 19 25

(2 - 93) (1 - 7) (2 - 81) (1 - 960) (1 - 360) (0 - 83) (1 - 140)0.1 0.1 0.2 0.3 0.2 0.2 0.1

(0.1 - 0.2) (0.1 - 0.3) (0.1 - 0.2) (0.2 - 0.5) (0.1 - 0.4) (0.1 - 0.3) (0.1 - 0.2)7.5 5.4 7.4 9.2 11.7 11.7 11.7

(6.6 - 8.0) (4.4 - 6.0) (6.7 - 8.5) (7.1 - 12.0) (8.6 - 15.0) (5.5 - 15.0) (9.7 - 15.0)<0.1 <0.1 0.1 0.4 0.3 0.1 <0.1

(0.1 - <0.1) (0.1 - <0.1) (0.1 - 0.2) (0.2 - 0.7) (0.1 - 0.6) (0.1 - 0.2) (0.1 - <0.1)42 21 44 45 44 39 35

(38 - 45) (17 - 23) (39 - 49) (35 - 66) (28 - 79) (22 - 53) (26 - 49)37 10 85 84 60 69 31

(33 - 42) (8 - 13) (73 - 100) (47 - 210) (28 - 100) (27 - 230) (10 - 65)51 24 49 54 50 45 39

(42 - 56) (20 - 28) (41 - 54) (42 - 84) (32 - 84) (32 - 61) (27 - 51)0.15 0.08 0.23 0.17 0.16 0.11 0.08

(0.13 - 0.16) (0.05 - 0.18) (0.17 - 0.29) (0.08 - 0.40) (0.11 - 0.26) (0.05 - 0.16) (0.05 - 0.14)26 13 23 37 25 25 20

(24 - 29) (11 - 17) (19 - 31) (19 - 140) (17 - 37) (12 - 33) (15 - 29)0.5 <0.2 1.7 1.0 0.7 0.4 0.3

(0.4 - 0.6) (0.2 - <0.2) (1.4 - 2.0) (0.5 - 2.9) (0.2 - 1.6) (0.2 - 0.6) (0.2 - 0.4)140 57 140 260 200 130 97

(120 - 160) (44 - 73) (110 - 150) (150 - 560) (100 - 420) (65 - 170) (63 - 140)18 18 18 18 18 18 18

(18 - 18) (18 - 18) (18 - 20) (18 - 18) (18 - 18) (18 - 18) (18 - 18)92 91 98 200 96 93 92

(90 - 100) (90 - 94) (90 - 110) (90 - 540) (90 - 120) (90 - 99) (90 - 100)83 23 280 870 150 90 48

(63 - 100) (21 - 29) (90 - 430) (140 - 4100) (23 - 360) (34 - 280) (16 - 91)Note: 1

23

4

5

6

Total Volatile Soilds (%w/w)

Summary statistics for bottom sediment quality in the Southern, Junk Bay and Deep BayWCZs, 2007 - 2011

Inner Deep Bay Outer Deep Bay

Total Solids (%w/w)

Number of samples



Lantau Island



Arsenic (mg/kg)

Cadmium (mg/kg)




Total Carbon (%w/w)


Chromium (mg/kg)

Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), the result will be takenas 0.5xRL in the calculation.

Copper (mg/kg)

Lead (mg/kg)

Mercury (mg/kg)

Nickel (mg/kg)

Low molecular weight polyaromatic hydrocarbons (PAHs) include 6 congeners of molecular weight below 200, namely : Acenaphthene, Acenaphthylene,Anthracene, Flourene, Naphthalene and Phenanthrene.

Silver (mg/kg)

High molecular weight polyaromatic hydrocarbons (PAHs) include 10 congeners of molecular weight above 200, namely : Fluoranthene, Pyrene,Benzo(a)anthracene, Chrysene, Benzo(b)fluoranthene, Benzo(k)fluoranthene, Benzo(a)pyrene, Dibenzo(a,h)anthracene, Benzo(g,h,i)perylene andIndeno(1,2,3-cd)pyrene.

Low and high molecular weight PAHs results are derived from the summation of the corresponding congeners. If the concentration of a congener isbelow report limit (RL), the result will be taken as 0.5xRL in the calculation.

Zinc (mg/kg)




Data presented are arithmetic means ; data in brackets indicate ranges.All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.

Appendix E


Port Island Mirs Bay

(North)Parameter PS3 PS5 PS6 MS1 MS2 MS7 MS17 MS3

10 10 10 10 10 10 10 1087 59 73 86 91 92 87 78

(58 - 94) (24 - 92) (48 - 91) (64 - 95) (76 - 99) (83 - 96) (77 - 94) (45 - 93)-211 -158 -174 -246 -265 -332 -215 -218

(-310 - -39) (-381 - -21) (-378 - -65) (-367 - -121) (-367 - -109) (-368 - -277) (-295 - -63) (-371 - -113)37 51 52 40 33 30 35 47


(8.5 - 12.0) (4.7 - 10.0) (6.4 - 8.3) (6.4 - 7.8) (7.5 - 9.4) (8.9 - 11.0) (7.8 - 9.3) (3.1 - 8.9)17300 11690 12100 15200 15200 16500 15300 12790

(14000 - 20000) (9900 - 14000) (11000 - 14000) (11000 - 19000) (13000 - 17000) (13000 - 19000) (13000 - 18000) (9900 - 17000)1.2 1.9 1.4 0.7 0.6 0.7 0.8 0.7

(1.0 - 1.4) (0.9 - 3.7) (1.1 - 1.6) (0.6 - 0.8) (0.5 - 0.8) (0.6 - 0.9) (0.6 - 1.0) (0.5 - 1.1)5.0 6.5 11.3 6.3 9.9 9.5 4.4 5.3

(0.1 - 11.0) (1.3 - 11.0) (0.4 - 60.0) (0.1 - 13.0) (0.1 - 20.0) (4.8 - 14.0) (0.2 - 7.1) (1.4 - 10.0)560 420 440 440 560 600 640 410

(340 - 680) (210 - 680) (210 - 580) (290 - 520) (460 - 610) (340 - 710) (580 - 740) (250 - 510)170 160 190 160 170 180 200 150

(110 - 210) (83 - 210) (89 - 230) (95 - 190) (150 - 190) (140 - 210) (180 - 220) (100 - 170)14 8 16 44 31 24 13 17

(4 - 41) (1 - 23) (1 - 98) (11 - 120) (1 - 69) (2 - 96) (1 - 35) (2 - 54)0.1 0.1 <0.1 0.2 0.2 0.2 0.2 0.1

(0.1 - 0.2) (0.1 - 0.2) (0.1 - <0.1) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2)5.7 4.1 5.7 8.2 7.1 6.7 6.3 6.3

(4.8 - 6.3) (0.2 - 5.6) (5.2 - 6.5) (6.9 - 9.2) (5.7 - 7.9) (5.8 - 7.6) (5.6 - 6.9) (5.0 - 7.3)<0.1 <0.1 <0.1 0.3 0.3 0.2 <0.1 <0.1

(0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - 0.4) (0.1 - 0.3) (0.1 - 0.5) (0.1 - <0.1) (0.1 - <0.1)26 22 24 28 36 35 33 27

(20 - 34) (13 - 31) (20 - 30) (25 - 32) (33 - 39) (31 - 39) (29 - 38) (19 - 35)20 11 11 29 21 20 16 13

(12 - 25) (6 - 16) (9 - 14) (20 - 39) (14 - 23) (16 - 26) (14 - 19) (10 - 17)36 28 30 47 46 43 44 34

(30 - 41) (15 - 38) (26 - 35) (41 - 56) (39 - 51) (38 - 48) (40 - 49) (24 - 42)0.08 0.05 <0.05 0.07 0.06 0.07 0.06 0.06

(0.07 - 0.10) (0.05 - 0.06) (0.05 - <0.05) (0.06 - 0.10) (0.05 - 0.07) (0.06 - 0.09) (0.05 - 0.07) (0.05 - 0.13)18 16 18 18 24 24 24 19

(15 - 21) (9 - 24) (15 - 22) (16 - 20) (21 - 25) (22 - 27) (21 - 28) (13 - 23)0.2 <0.2 <0.2 0.9 0.3 0.2 <0.2 <0.2

(0.2 - 0.3) (0.2 - <0.2) (0.2 - <0.2) (0.5 - 1.4) (0.2 - 0.5) (0.2 - 0.3) (0.2 - <0.2) (0.2 - <0.2)91 66 66 100 100 100 96 74

(69 - 130) (29 - 93) (51 - 82) (88 - 130) (92 - 120) (82 - 120) (87 - 110) (51 - 96)18 18 18 18 18 18 18 18

(18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18)96 93 94 96 91 98 93 92

(90 - 140) (90 - 110) (90 - 130) (90 - 140) (90 - 100) (90 - 160) (90 - 110) (90 - 100)60 28 25 55 40 69 36 28

(38 - 82) (19 - 36) (20 - 40) (28 - 190) (25 - 51) (28 - 170) (29 - 44) (18 - 67)Note: 1

23

4

5

6 Low and high molecular weight PAHs results are derived from the summation of the corresponding congeners. If the concentration of acongener is below report limit (RL), the result will be taken as 0.5xRL in the calculation.

Summary statistics for bottom sediment quality in the Port Shelter and Mirs BayWCZs, 2007 - 2011

Arsenic (mg/kg)


Total Carbon (%w/w)


Inner PortShelter

OuterPort Shelter

StarlingInlet

Crooked Island

Number of samples



Total Solids (%w/w)





Cadmium (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)

Mercury (mg/kg)

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)







Appendix E


Mirs Bay

(South)Parameter MS4 MS5 MS6 MS8 MS13 MS14 MS15 MS16

10 10 10 10 10 10 10 1087 86 92 94 92 92 91 85

(69 - 97) (79 - 94) (81 - 98) (90 - 97) (82 - 99) (84 - 96) (82 - 97) (64 - 96)-190 -168 -247 -157 -152 -155 -150 -154

(-267 - -82) (-253 - -95) (-300 - -91) (-249 - -92) (-208 - -59) (-250 - -88) (-260 - -106) (-267 - -99)38 43 34 46 50 50 50 55


(6.3 - 8.6) (6.6 - 8.0) (9.0 - 11.0) (5.6 - 7.1) (5.7 - 6.3) (4.9 - 6.3) (5.4 - 6.5) (4.7 - 6.0)14100 13200 16500 11030 10310 10620 9980 10910

(12000 - 16000) (10000 - 17000) (12000 - 21000) (8800 - 18000) (8100 - 18000) (7700 - 18000) (8000 - 21000) (7800 - 27000)0.7 0.7 0.9 0.6 0.6 0.5 0.6 0.6

(0.6 - 0.8) (0.6 - 0.8) (0.7 - 1.0) (0.5 - 0.7) (0.5 - 0.6) (0.5 - 0.6) (0.5 - 0.6) (0.6 - 0.7)5.3 4.9 7.1 2.7 1.9 1.8 2.8 3.4

(0.9 - 22.0) (0.1 - 9.6) (4.7 - 10.0) (0.4 - 6.9) (0.7 - 3.1) (0.1 - 4.0) (0.2 - 5.4) (1.6 - 5.7)500 490 670 410 340 380 430 380

(430 - 590) (390 - 560) (580 - 770) (270 - 480) (200 - 460) (200 - 510) (310 - 500) (240 - 540)180 190 200 200 190 200 220 210

(150 - 190) (160 - 210) (180 - 230) (150 - 230) (98 - 250) (130 - 240) (180 - 250) (160 - 250)7 11 14 6 43 4 6 7

(1 - 19) (1 - 24) (2 - 44) (1 - 15) (0 - 390) (1 - 9) (1 - 17) (1 - 16)0.1 0.1 0.2 0.1 0.1 0.1 0.1 <0.1

(0.1 - 0.3) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - <0.1)6.3 6.5 6.0 6.5 6.9 6.7 6.1 6.1

(5.5 - 7.1) (6.1 - 7.0) (5.2 - 6.9) (5.4 - 7.2) (5.7 - 8.1) (5.7 - 7.5) (5.2 - 7.3) (5.3 - 6.6)<0.1 <0.1 0.1 <0.1 <0.1 <0.1 <0.1 <0.1

(0.1 - <0.1) (0.1 - <0.1) (0.1 - 0.2) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1)34 29 33 30 31 30 27 27

(30 - 38) (25 - 32) (29 - 39) (25 - 35) (27 - 34) (28 - 34) (24 - 30) (21 - 33)14 12 17 12 11 11 10 10

(10 - 16) (10 - 14) (14 - 19) (8 - 16) (9 - 14) (7 - 13) (7 - 12) (6 - 12)38 39 42 33 32 32 29 31

(34 - 44) (31 - 45) (39 - 48) (29 - 42) (27 - 38) (29 - 36) (23 - 33) (26 - 35)0.05 0.05 0.07 0.05 0.05 <0.05 <0.05 <0.05

(0.05 - 0.06) (0.05 - 0.06) (0.05 - 0.11) (0.05 - 0.06) (0.05 - 0.07) (0.05 - <0.05) (0.05 - <0.05) (0.05 - <0.05)24 22 24 22 23 22 20 20

(21 - 31) (18 - 25) (21 - 27) (18 - 26) (20 - 27) (19 - 26) (17 - 24) (17 - 23)<0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2

(0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2) (0.2 - <0.2)87 83 100 79 78 78 69 70

(73 - 110) (64 - 100) (89 - 150) (64 - 91) (71 - 85) (66 - 87) (64 - 75) (55 - 84)18 18 18 18 18 18 18 18

(18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18)92 90 93 98 91 91 95 94

(90 - 110) (90 - 90) (90 - 120) (90 - 160) (90 - 95) (90 - 97) (90 - 140) (90 - 120)34 31 53 33 34 26 28 30

(28 - 57) (19 - 63) (29 - 74) (17 - 67) (19 - 59) (19 - 40) (19 - 51) (17 - 91)Note: 1

23

4

5

6


Low and high molecular weight PAHs results are derived from the summation of the corresponding congeners. If the concentration of acongener is below report limit (RL), the result will be taken as 0.5xRL in the calculation.

Summary statistics for bottom sediment quality in the Mirs Bay WCZ, 2007 - 2011

(North)

Mirs Bay LongHarbour

WaglanIsland

Mirs Bay (Central)

Lead (mg/kg)


Total Carbon (%w/w)

Number of samples



Total Solids (%w/w)





Arsenic (mg/kg)

Cadmium (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Mercury (mg/kg)

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)







Appendix E


Chek LapKok

Tsing Yi Hong KongIsland

(North) (South) (West)Parameter NS2 NS3 NS4 NS6 WS1 WS2

10 10 10 10 10 1068 73 57 52 70 85

(44 - 90) (43 - 96) (14 - 95) (26 - 70) (39 - 90) (72 - 97)-194 -218 -237 -194 -204 -169

(-380 - -57) (-390 - -42) (-403 - -133) (-372 - -57) (-327 - -88) (-338 - -58)52 53 56 62 49 46

(45 - 58) (43 - 70) (44 - 68) (52 - 71) (43 - 63) (43 - 49)Total Volatile Soilds (%w/w) 6.0 6.2 5.5 4.3 6.0 5.9

(5.6 - 6.5) (3.1 - 7.2) (4.4 - 6.6) (2.9 - 5.6) (4.6 - 7.0) (5.1 - 6.6)12700 13010 13500 12400 15600 13840

(11000 - 15000) (9400 - 17000) (11000 - 17000) (11000 - 15000) (12000 - 19000) (9400 - 21000)0.7 0.8 0.7 0.6 0.8 0.6

(0.5 - 1.0) (0.5 - 1.2) (0.5 - 0.9) (0.3 - 1.2) (0.6 - 1.1) (0.5 - 0.6)3.2 7.0 5.8 3.2 8.3 2.2

(0.1 - 9.3) (0.1 - 21.0) (0.1 - 22.0) (0.1 - 17.0) (0.2 - 18.0) (0.1 - 6.2)330 330 310 240 410 380

(260 - 410) (170 - 430) (110 - 440) (130 - 310) (290 - 480) (260 - 530)170 190 180 130 200 170

(130 - 200) (140 - 220) (77 - 230) (100 - 160) (160 - 260) (140 - 210)20 36 51 7 49 17

(2 - 41) (0 - 110) (2 - 220) (0 - 47) (4 - 150) (3 - 63)0.2 0.2 0.2 0.1 0.2 0.2

(0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2)8.2 11.7 10.5 9.8 7.7 8.7

(4.5 - 10.0) (8.3 - 14.0) (8.2 - 15.0) (7.1 - 13.0) (3.8 - 8.9) (6.9 - 12.0)<0.1 <0.1 <0.1 <0.1 0.1 <0.1

(0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - <0.1) (0.1 - 0.2) (0.1 - <0.1)31 34 30 26 37 36

(14 - 41) (22 - 44) (22 - 47) (16 - 35) (17 - 58) (32 - 40)34 30 29 14 51 26

(13 - 49) (13 - 48) (12 - 51) (9 - 21) (13 - 68) (17 - 33)36 40 37 30 37 36

(20 - 45) (27 - 51) (31 - 53) (16 - 47) (24 - 46) (30 - 41)0.09 0.11 0.09 0.06 0.14 0.09

(0.05 - 0.12) (0.07 - 0.16) (0.06 - 0.14) (0.05 - 0.10) (0.06 - 0.19) (0.05 - 0.14)18 20 18 17 19 23

(9 - 23) (15 - 26) (13 - 27) (8 - 23) (9 - 24) (19 - 26)0.4 0.3 0.3 <0.2 1.0 0.3

(0.2 - 0.5) (0.2 - 0.5) (0.2 - 0.4) (0.2 - <0.2) (0.2 - 1.7) (0.2 - 0.4)98 98 100 71 110 99

(50 - 120) (63 - 130) (78 - 130) (32 - 99) (53 - 140) (77 - 110)18 18 18 18 18 18

(18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18) (18 - 18)91 92 93 90 97 92

(90 - 96) (90 - 96) (90 - 100) (90 - 93) (90 - 130) (90 - 97)80 76 66 22 170 79

(26 - 150) (24 - 170) (24 - 130) (17 - 25) (77 - 260) (38 - 220)Note: 1

23

4

5

6

Summary statistics for bottom sediment quality in the North Western and Western BufferWCZs, 2007 - 2011

Cadmium (mg/kg)

PearlIsland

PillarPoint

UrmstonRoad

Number of samples



Total Solids (%w/w)


Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), theresult will be taken as 0.5xRL in the calculation.




Total Carbon (%w/w)






Arsenic (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)

Mercury (mg/kg)

Nickel (mg/kg)


Data presented are arithmetic means ; data in brackets indicate ranges.All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.

Silver (mg/kg)

Zinc (mg/kg)



Appendix E


Chai Wan (East) (Central) (West)Parameter ES1 ES2 ES4 VS3 VS5 VS6 VS9 VS10

10 10 10 10 10 10 10 1047 70 56 67 82 57 75 72

(21 - 65) (50 - 93) (24 - 91) (20 - 91) (51 - 95) (25 - 80) (53 - 88) (28 - 92)-166 -145 -155 -264 -344 -266 -190 -244

(-230 - -124) (-222 - -102) (-190 - -134) (-343 - -222) (-386 - -260) (-369 - -169) (-319 - -80) (-350 - -78)63 57 58 46 38 55 48 44


(3.7 - 6.6) (3.5 - 6.7) (3.7 - 6.5) (4.1 - 7.1) (6.3 - 10.0) (4.1 - 12.0) (5.1 - 6.6) (5.1 - 9.4)10990 10430 12100 18800 23800 19200 13700 18700

(9100 - 14000) (6700 - 14000) (10000 - 15000) (15000 - 22000) (19000 - 27000) (12000 - 25000) (11000 - 17000) (12000 - 30000)1.2 0.8 1.0 0.7 0.9 1.3 0.8 0.9

(0.9 - 1.5) (0.6 - 1.2) (0.7 - 1.3) (0.6 - 0.8) (0.7 - 1.4) (0.7 - 1.9) (0.5 - 1.3) (0.5 - 1.5)4.1 2.2 4.1 6.5 20.7 8.9 9.5 4.0

(2.3 - 9.3) (0.1 - 5.0) (0.3 - 8.5) (0.1 - 17.0) (7.2 - 36.0) (2.5 - 18.0) (0.1 - 24.0) (0.1 - 22.0)310 370 400 490 650 420 340 470

(220 - 420) (280 - 460) (290 - 530) (350 - 610) (430 - 940) (320 - 560) (210 - 530) (320 - 650)160 190 170 190 200 220 160 190

(96 - 200) (150 - 220) (120 - 230) (130 - 260) (160 - 240) (180 - 260) (97 - 220) (140 - 250)20 6 24 83 280 140 53 84

(1 - 67) (1 - 19) (1 - 78) (2 - 230) (8 - 620) (11 - 320) (1 - 240) (1 - 190)0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.2

(0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.2) (0.1 - 0.3) (0.1 - 0.6) (0.1 - 0.3) (0.1 - 0.2) (0.1 - 0.4)5.0 6.0 4.8 7.4 7.3 8.8 6.0 7.9

(4.2 - 6.2) (4.4 - 8.9) (3.4 - 6.3) (5.3 - 11.0) (6.5 - 8.1) (5.5 - 16.0) (3.0 - 8.1) (4.6 - 9.9)<0.1 0.1 <0.1 0.4 0.7 0.4 0.2 0.6

(0.1 - <0.1) (0.1 - 0.2) (0.1 - <0.1) (0.2 - 0.5) (0.4 - 0.9) (0.2 - 0.6) (0.1 - 0.3) (0.2 - 1.0)22 24 27 38 52 32 37 67

(16 - 29) (17 - 40) (21 - 38) (18 - 51) (42 - 64) (17 - 43) (28 - 43) (35 - 91)26 19 44 98 140 84 49 160

(21 - 29) (9 - 54) (32 - 56) (40 - 160) (120 - 180) (55 - 120) (8 - 81) (93 - 240)26 26 30 51 66 84 33 63

(23 - 32) (18 - 40) (25 - 41) (39 - 66) (55 - 79) (37 - 140) (24 - 42) (38 - 99)0.10 0.07 0.18 0.37 0.45 0.54 0.13 0.20

(0.07 - 0.14) (0.05 - 0.17) (0.11 - 0.36) (0.13 - 0.99) (0.34 - 0.63) (0.20 - 0.97) (0.05 - 0.21) (0.11 - 0.28)13 16 15 17 23 16 22 29

(10 - 17) (12 - 27) (11 - 21) (10 - 23) (19 - 28) (10 - 25) (19 - 28) (19 - 38)0.5 0.3 1.0 3.3 5.1 2.2 0.9 3.6

(0.4 - 0.7) (0.2 - 0.4) (0.8 - 1.2) (1.3 - 5.6) (3.6 - 7.0) (1.1 - 4.0) (0.2 - 1.8) (2.1 - 5.0)66 69 84 160 260 180 100 200

(56 - 79) (40 - 120) (69 - 110) (85 - 210) (190 - 300) (110 - 250) (71 - 140) (97 - 350)18 18 18 18 18 25 18 19

(18 - 18) (18 - 18) (18 - 18) (18 - 20) (18 - 20) (18 - 49) (18 - 18) (18 - 29)100 93 100 100 130 270 99 110

(90 - 210) (90 - 100) (90 - 170) (90 - 140) (100 - 210) (110 - 700) (90 - 130) (90 - 140)180 74 380 530 740 2200 110 370

(47 - 840) (25 - 300) (80 - 1700) (90 - 960) (350 - 1100) (180 - 6200) (19 - 220) (52 - 1400)Note: 1

23

4

5

6

Summary statistics for bottom sediment quality in the Eastern Buffer and Victoria HarbourWCZs, 2007 - 2011

Rambler ChannelVictoria HarbourEastern Buffer

Tathong Channel

Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), the resultwill be taken as 0.5xRL in the calculation.






Total Solids (%w/w)


Arsenic (mg/kg)

Cadmium (mg/kg)

Total Carbon (%w/w)




All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)


Number of samples



Data presented are arithmetic means ; data in brackets indicate ranges.

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)

Mercury (mg/kg)



Appendix F

MARINE WATER QUALITY IN HONG KONG IN 2011 F - 1

0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2SS5

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories

Lantau Island Hong Kong Island

Kowloon

Mean particle size fractionation <63 µm levels in marine sediments in Hong Kong, 2007 – 2011

0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2SS5

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories

Hong Kong Island

Kowloon

Lantau Island

Lantau Island

ShenzhenParticle Size

Fractionation <63μm(%w/w)

>80

40 - 80

<40

Shenzhen

Mean cadmium levels in marine sediments in Hong Kong, 2007 – 2011

Cadmium(mg/kg dry weight)

> 4.0

1.6 – 4.0

0 - 1.5

Appendix F


0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2SS5

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories

Hong Kong Island

Kowloon

0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2SS5

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories


Kowloon

Mean mercury levels in marine sediments in Hong Kong, 2007 - 2011

Mean copper levels in marine sediments in Hong Kong, 2007 - 2011

Lantau Island

Shenzhen

Copper(mg/kg dry weight)

>110

66 - 110

0 - 65

Mercury(mg/kg dry weight)

>1.0

0.6 - 1.0

0 - 0.5

Shenzhen

Lantau Island

Appendix F


0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories


Kowloon

0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories


Kowloon

Mean silver levels in marine sediments in Hong Kong, 2007 - 2011

Mean total polychlorinated biphenyls (PCBs) levels in marine sediments in Hong Kong, 2007 - 2011

Lantau Island

Lantau IslandSS5

SS5

Silver(mg/kg dry weight)

>2

1.1 - 2

0 - 1

Shenzhen

Shenzhen

Total PCBs(μg/kg dry weight)

>180

24 - 180

0 - 23

Appendix F


0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories

Hong Kong Island

Kowloon

0 5 10km

DS1

DS2

DS3

DS4

NS4

NS3

NS6

NS2

WS1

WS2

SS6SS4

SS3

SS2

SS1

VS10

VS9

VS6VS5 VS3

ES1

ES2

MS8

MS13

MS14

PS6

PS5

PS3

TS2

TS3 TS4

TS5

MS16

MS15

MS17

MS7 MS5

MS4MS2

MS3

MS1

N

JS2

ES4

MS6

New Territories

Lantau IslandHong Kong Island

Kowloon

Mean high molecular weight polycyclic aromatic hydrocarbons (PAHs) levelsin marine sediments in Hong Kong, 2007 - 2011

Mean low molecular weight polycyclic aromatic hydrocarbons (PAHs) levels in marine sediments in Hong Kong, 2007 - 2011

SS5

SS5Lantau Island

Low molecular weight PAHs

(μg/kg dry weight)

>3160

551 - 3160

0 - 550

Shenzhen

High molecular weight PAHs

(μg/kg dry weight)

>9600

0 - 1700

1701 - 9600

Shenzhen

Lantau Island

0

2

4

6

8

10

12

NT1 ST1 ST3 WT1 WT3 VT8 VT12 VT10 VT2 VT11 VT4 VT3 ET2 ET1 PT4 PT3 PT2 TT1

Dep

th-a

vera

ged

Dis

solv

ed O

xyge

n (m

g/L)

Dep

th-a

vera

ged

5-da

y Bi

oche

mic

al O

xyge

n D

eman

d(m

g/L)

0

1

2

3

4


Tuen

Mun

Chue

ngCh

au

Ram

bler

Cha

nnel

Caus

eway

Bay

To K

wa

Wan

Sai K

ung

Kwun

Tong

Yau

Ma

Tei

Aldr

ich

Bay

(Sha

uKe

i Wan

)

Sam

Ka

Tsue

n

Chai

Wan

Yim

Tin

Tsai

(in S

aiKu

ng)

Shue

nW

an

Aber

deen

(Sou

th)

Aber

deen

(Wes

t)

Hei L

ing

Chau

Gove

rnm

ent

Dock

yard

Hebe

Hav

en

0

10

20


Dep

th-a

vera

ged

Susp

ende

d So

lids

(mg/

L)Water quality of typhoon shelters in Hong Kong in 2011

Mean

Min

Max

Appendix G

MARINE WATER QUALITY IN HONG KONG IN 2011 G - 1

Mean

Min

Max


102

103

104

105

1

Dep

th-a

vera

ged

E. c

oli (

cfu/

100m

L)D

epth

-ave

rage

dAm

mon

ia N

itrog

en (m

g/L)

0

0.2

0.4

0.6

0.8


0

0.5

1

1.5

2


Dep

th-a

vera

ged

Tota

l Ino

rgan

ic N

itrog

en (m

g/L)

101

Tuen

Mun

Chue

ngCh

au

Ram

bler

Cha

nnel

Caus

eway

Bay

To K

wa

Wan

Sai K

ung

Kwun

Tong

Yau

Ma

Tei

Aldr

ich

Bay

(Sha

uKe

i Wan

)

Sam

Ka

Tsue

n

Chai

Wan

Yim

Tin

Tsai

(in S

aiKu

ng)

Shue

nW

an

Aber

deen

(Sou

th)

Aber

deen

(Wes

t)

Hei L

ing

Chau

Gove

rnm

ent

Dock

yard

Hebe

Hav

en

Water quality of typhoon shelters in Hong Kong in 2011 (continued)

Appendix G


Appendix G


Monitoring Station NT1 ST1 ST3 WT3 WT1 VT8 VT10 VT2 VT11

1986 1986 2000 1986 1986 1986 1993 1986 1994

I I I I I I I I I

2011 2011 2011 2011 2011 2011 2011 2011 2011

Parameter Water Depth 26 26 12 26 26 26 19 26 18

Surface - - - - - - - - -

Temperature (℃) Middle NA - - - - - -

Bottom NA - - - - - - -

Average - - - - - - - -

Surface - - - - - - - - -

Salinity Middle NA - - - - - - -

Bottom NA - - - - - - - -

Average - - - - - - - - -

Surface - - - - -

Dissolved Oxygen (mg/L) Middle NA - - - -

Bottom NA - - -

Average - - - - -

Surface - - - -

Dissolved Oxygen (%) Middle NA - - -

Bottom NA - - -

Average - - -

Surface - - - - - -

pH Middle NA - - - - - -

Bottom NA - - -

Average - - - - -

Secchi disc depth (m) - -

Surface - - - - - - -

Turbidity (NTU) Middle NA - - - - - - - -

Bottom NA - - - - -

Average - - - - - -

Surface - - - - - -

Suspended Solids (mg/L) Middle NA - - - - -

Bottom NA - - - - - - -

Average - - - - - -

Surface - - - - - -

Volatile suspended solids (mg/L) Middle NA - - - - -

Bottom NA - - - - - - - -

Average - - - - - -

Surface - - - - - - -

5-day Biochemical Oxygen Demand (mg/L) Middle NA - - - - - -

Bottom NA - - - - - -

Average - - - - - - -

Surface - - - -

Ammonia nitrogen (mg/L) Middle NA - - - -

Bottom NA - - - -

Average - - - -

Surface - - -

Unionised Ammonia (mg/L) Middle NA - - - -

Bottom NA - -

Average - - -

Surface - - - - - - -

Nitrite nitrogen (mg/L) Middle NA - - - - - - -

Bottom NA - - - - - - -

Average - - - - - - -

Surface - - -

Nitrate nitrogen (mg/L) Middle NA - - - -

Bottom NA - - - -

Average - - - -

Surface - - - - - -

Total inorganic nitrogen (mg/L) Middle NA - - - - - -

Bottom NA - - - - -

Average - - - - - -

Surface - - - -

Total Kjeldahl nitrogen (mg/L) Middle NA - - - - -

Bottom NA - - - -

Average - - - -

Surface - - -

Total nitrogen (mg/L) Middle NA - - - - -

Bottom NA - - - -

Average - - -

Surface - - - -

Orthophosphate phosphorus (mg/L) Middle NA - - - -

Bottom NA - - - -

Average - -

Surface - - - -

Total phosphorus (mg/L) Middle NA - - - -

Bottom NA - - - -

Average - - - -

Surface - - - - - -

Silica (mg/L) Middle NA - - - - - - -

Bottom NA - - - - - - -

Average - - - - - - -

Surface - - - - - - - -

Chlorophyll-a (μg/L) Middle NA - - - - - - -

Bottom NA - - - - -

Average - - - - - -

Surface - - -

E. coli (cfu/100mL) Middle NA -

Bottom NA - - - -

Average - - - -

Surface - - - - - -

Faecal coliforms (cfu/100mL) Middle NA - - - - - -

Bottom NA - - - - -

Average - - - - - -

Note: 1. Results of the Seasonal Kendall Test statistically significant at p < 0.05

Note: 2. - indicates no significant trend

Note: 3. NA (Not Applicable) indicates the measurement was not made due to shallow water

Note: 4. significant increase

Note: 5. significant decrease

Results of the Seasonal Kendall Test for water quality trends in typhoon shelters, 1986 - 2011

Monitoring Period

Appendix G


Monitoring Station VT12 VT4 VT3 ET2 ET1 PT4 PT3 PT2 TT1

2000 1987 1986 1993 1986 1986 1986 1986 1986

I I I I I I I I I

2011 2011 2011 2011 2011 2011 2011 2011 2011

Parameter Water Depth 12 25 26 19 26 26 26 26 26

Surface - - -

Temperature (℃) Middle - - - - NA - NA -

Bottom - - - - -

Average - - - -

Surface - - - - - - - - -

Salinity Middle - - - - NA - NA -

Bottom - - - - - - - -

Average - - - - - - - - -

Surface - - - -

Dissolved Oxygen (mg/L) Middle - - NA - NA -

Bottom - - - - - -

Average - - - - -

Surface - - - -

Dissolved Oxygen (%) Middle - NA - NA -

Bottom - - - - -

Average - - - - -

Surface - - - -

pH Middle - - - NA NA

Bottom - - - - -

Average - - - -

Secchi disc depth (m) - - -

Surface - - - - - - - - -

Turbidity (NTU) Middle - - - - NA - NA -

Bottom - - - - - - - - -

Average - - - - - - - -

Surface - - - - -

Suspended Solids (mg/L) Middle - - - NA - NA

Bottom - - - - - -

Average - - - - -

Surface - - - - - - - - -

Volatile suspended solids (mg/L) Middle - - - NA - NA

Bottom - - - - - - - -

Average - - - - - -

Surface - -

5-day Biochemical Oxygen Demand (mg/L) Middle - - NA - NA

Bottom - - - -

Average - - -

Surface - - - -

Ammonia nitrogen (mg/L) Middle - - NA - NA -

Bottom - - - - -

Average - - - -

Surface - - -

Unionised Ammonia (mg/L) Middle - - NA - NA

Bottom - - - -

Average - - -

Surface - - - - - - - -

Nitrite nitrogen (mg/L) Middle - - - - NA - NA -

Bottom - - - - - - - -

Average - - - - - - - -

Surface - - - - - - -

Nitrate nitrogen (mg/L) Middle - - - NA - NA -

Bottom - - - - - - -

Average - - - - - - -

Surface - - - - -

Total inorganic nitrogen (mg/L) Middle - - NA - NA -

Bottom - - - - -

Average - - - -

Surface - - -

Total Kjeldahl nitrogen (mg/L) Middle - - NA - NA

Bottom - - - -

Average - - - -

Surface - - - -

Total nitrogen (mg/L) Middle - - NA - NA

Bottom - - - -

Average - - - -

Surface - -

Orthophosphate phosphorus (mg/L) Middle - - NA - NA

Bottom - -

Average - - -

Surface - - - -

Total phosphorus (mg/L) Middle - NA - NA

Bottom - -

Average - - -

Surface - - - - - -

Silica (mg/L) Middle - - - NA - NA -

Bottom - - - - - -

Average - - - - - -

Surface - - - - - -

Chlorophyll-a (μg/L) Middle - - - - NA - NA

Bottom - - - - - -

Average - - - - - -

Surface - - -

E. coli (cfu/100mL) Middle - - NA - NA

Bottom - - -

Average - -

Surface - - -

Faecal coliforms (cfu/100mL) Middle - - - NA - NA

Bottom - -

Average - -

Note: 1. Results of the Seasonal Kendall Test statistically significant at p < 0.05

Note: 2. - indicates no significant trend

Note: 3. NA (Not Applicable) indicates the measurement was not made due to shallow water

Note: 4. significant increase

Note: 5. significant decrease

Results of the Seasonal Kendall Test for water quality trends in typhoon shelters, 1986 - 2011(continued)

Monitoring Period

Appendix G


Summary of water quality statistics for typhoon shelters in 2011

Tuen MunParameter NT1 ST1 ST3 WT1 WT3 VT8

Number of samples 6 6 6 6 6 623.6 23.4 23.4 23.1 23.1 23.0

(16.7 - 28.1) (16.3 - 28.9) (16.2 - 28.8) (15.7 - 27.3) (15.7 - 27.6) (16.9 - 27.0)28.2 31.2 30.8 32.0 31.7 30.8

(20.2 - 32.8) (26.8 - 32.9) (26.7 - 32.7) (30.1 - 33.2) (29.1 - 33.1) (28.4 - 32.8)5.3 5.4 5.8 5.5 5.8 4.8

(3.5 - 6.6) (3.3 - 6.8) (3.0 - 8.3) (3.5 - 7.3) (3.4 - 7.0) (3.5 - 6.4)5.5 5.8 5.5 5.6 5.0

(3.5 - 7.2) (3.0 - 8.1) (3.5 - 7.4) (3.5 - 7.1) (3.6 - 6.5)72 75 81 76 81 67

(50 - 82) (49 - 85) (44 - 104) (50 - 89) (49 - 98) (51 - 79)76 80 77 78 69

(52 - 90) (45 - 101) (50 - 90) (50 - 88) (52 - 81)7.7 7.8 7.8 7.8 7.8 7.8

(6.8 - 8.2) (7.7 - 8.0) (7.7 - 8.0) (7.7 - 7.9) (7.7 - 7.9) (7.6 - 8.2)1.9 2.1 2.0 2.9 2.9 2.0

(0.9 - 2.2) (1.7 - 2.5) (1.6 - 2.4) (2.2 - 3.3) (2.4 - 3.3) (1.6 - 2.3)4.2 5.8 5.4 2.0 2.2 5.6

(2.5 - 6.8) (2.5 - 10.7) (2.4 - 9.5) (1.4 - 2.6) (1.4 - 3.7) (3.4 - 8.5)5.3 8.7 5.7 2.7 3.0 8.5

(2.6 - 7.7) (2.0 - 16.3) (2.7 - 10.0) (1.4 - 3.5) (2.0 - 5.6) (4.7 - 15.3)0.6 0.9 1.1 0.9 1.0 0.7

(<0.1 - 0.8) (0.6 - 1.4) (0.7 - 1.4) (0.5 - 1.4) (0.6 - 1.5) (0.4 - 1.5)0.148 0.115 0.105 0.099 0.094 0.178

(0.056 - 0.210) (0.104 - 0.140) (0.032 - 0.150) (0.044 - 0.167) (0.044 - 0.180) (0.049 - 0.273)0.004 0.003 0.003 0.003 0.002 0.004

(<0.001 - 0.014) (0.001 - 0.006) (0.001 - 0.004) (<0.001 - 0.004) (<0.001 - 0.004) (0.002 - 0.005)0.066 0.030 0.041 0.028 0.035 0.047

(0.021 - 0.140) (0.010 - 0.061) (0.012 - 0.071) (0.006 - 0.055) (0.006 - 0.071) (0.019 - 0.066)0.361 0.171 0.221 0.135 0.160 0.221

(0.076 - 0.860) (0.050 - 0.295) (0.120 - 0.395) (0.062 - 0.293) (0.056 - 0.400) (0.110 - 0.310) 0.57 0.32 0.37 0.26 0.29 0.45

(0.28 - 1.16) (0.17 - 0.46) (0.24 - 0.52) (0.16 - 0.45) (0.17 - 0.56) (0.37 - 0.64)0.26 0.23 0.22 0.19 0.21 0.29

(0.17 - 0.35) (0.15 - 0.29) (0.19 - 0.29) (0.07 - 0.29) (0.10 - 0.32) (0.22 - 0.35)0.69 0.43 0.48 0.36 0.40 0.55

(0.38 - 1.31) (0.29 - 0.65) (0.36 - 0.66) (0.18 - 0.62) (0.22 - 0.78) (0.45 - 0.71)0.031 0.019 0.018 0.013 0.012 0.026

(0.027 - 0.038) (0.011 - 0.029) (0.005 - 0.029) (0.009 - 0.018) (0.003 - 0.017) (0.005 - 0.033)0.05 0.04 0.04 0.03 0.03 0.05

(0.04 - 0.06) (0.03 - 0.05) (0.02 - 0.05) (0.02 - 0.04) (0.02 - 0.04) (0.04 - 0.05)1.85 1.15 1.15 0.85 0.88 1.23

(1.10 - 3.50) (0.53 - 1.70) (0.81 - 1.70) (0.51 - 1.80) (0.46 - 1.93) (0.74 - 1.80)1.6 2.4 4.5 2.3 3.3 2.1

(0.7 - 2.7) (0.8 - 4.2) (1.1 - 8.7) (0.5 - 4.8) (0.2 - 9.6) (0.4 - 9.4)150 98 3 340 1100 500

(19 - 2500) (61 - 130) (<1 - 29) (85 - 1100) (590 - 2300) (160 - 770)830 260 4 900 2000 1500

(30 - 11000) (190 - 330) (1 - 60) (140 - 4800) (770 - 5500) (340 - 3200)

Note : 3. Data in brackets indicate the ranges.Note : 4. N.M. - not measured.







Chlorophyll-a (μg/L)










pH


Turbidity (NTU)


N.M.

N.M.

Bottom


Bottom

RamblerChannel

Temperature (℃)

Salinity


Cheung Chau Hei Ling ChauAberdeen

(South)Aberdeen

(West)

Appendix G

MARINE WATER QUALITY IN HONG KONG IN 2011 G – 6


GovernmentDockyard

Parameter VT12 VT10 VT2 VT11 VT4 VT3Number of samples 6 6 6 6 6 6

23.4 23.2 22.9 22.7 22.7 22.6(16.9 - 26.9) (16.8 - 27.3) (16.6 - 26.3) (16.6 - 26.0) (16.8 - 26.0) (16.7 - 26.2)

31.4 31.1 31.5 32.0 31.3 32.0(29.6 - 32.1) (27.9 - 32.4) (29.5 - 32.4) (30.3 - 32.6) (30.1 - 32.2) (29.9 - 32.9)

3.6 3.5 4.0 4.6 3.9 4.8(2.2 - 4.6) (1.5 - 5.2) (2.2 - 5.5) (3.0 - 6.6) (2.6 - 5.1) (3.0 - 6.6)

3.6 3.5 4.0 4.7 3.6 5.0(2.2 - 4.7) (1.3 - 5.4) (2.5 - 5.6) (3.0 - 6.5) (1.8 - 6.0) (3.0 - 7.1)

51 48 54 64 53 66(33 - 58) (23 - 65) (32 - 69) (45 - 82) (39 - 64) (44 - 83)

50 47 55 65 48 69(32 - 58) (19 - 67) (37 - 70) (45 - 81) (27 - 75) (45 - 89)

7.6 7.7 7.7 7.8 7.6 7.8(7.4 - 8.3) (7.5 - 8.3) (7.5 - 8.2) (7.5 - 8.3) (7.2 - 8.2) (7.5 - 8.3)

2.0 2.2 2.1 2.6 1.9 2.5(1.7 - 2.3) (1.8 - 2.4) (1.5 - 2.6) (2.2 - 3.0) (1.4 - 2.8) (2.0 - 3.0)

4.4 4.2 5.7 2.9 3.0 2.9(2.1 - 9.3) (1.5 - 6.0) (3.1 - 8.6) (2.3 - 3.9) (1.5 - 8.4) (1.9 - 5.5)

8.1 4.9 8.6 3.3 2.7 3.4(2.2 - 17.0) (1.7 - 10.0) (3.6 - 12.8) (1.7 - 4.7) (1.5 - 4.6) (1.4 - 5.5)

1.6 1.3 1.1 1.0 2.1 1.1(0.8 - 3.4) (0.9 - 2.2) (0.8 - 2.2) (0.7 - 2.2) (1.0 - 3.6) (0.5 - 2.7)

0.349 0.367 0.254 0.201 0.406 0.160(0.125 - 0.465) (0.068 - 0.503) (0.091 - 0.375) (0.064 - 0.347) (0.233 - 0.593) (0.078 - 0.265)

0.006 0.006 0.005 0.004 0.007 0.004(0.002 - 0.011) (0.004 - 0.008) (0.002 - 0.008) (0.002 - 0.006) (0.003 - 0.017) (0.001 - 0.007)

0.032 0.034 0.030 0.027 0.098 0.026(0.026 - 0.045) (0.024 - 0.049) (0.020 - 0.041) (0.016 - 0.042) (0.039 - 0.213) (0.014 - 0.041)

0.151 0.173 0.167 0.140 0.587 0.134(0.105 - 0.243) (0.117 - 0.253) (0.130 - 0.220) (0.110 - 0.190) (0.210 - 0.990) (0.102 - 0.167)

0.53 0.57 0.45 0.37 1.09 0.32(0.29 - 0.66) (0.37 - 0.71) (0.31 - 0.59) (0.25 - 0.51) (0.72 - 1.59) (0.27 - 0.41)

0.52 0.55 0.41 0.35 0.67 0.31(0.35 - 0.63) (0.32 - 0.67) (0.28 - 0.54) (0.22 - 0.46) (0.55 - 0.85) (0.22 - 0.40)

0.70 0.76 0.61 0.52 1.36 0.47(0.51 - 0.80) (0.62 - 0.82) (0.50 - 0.71) (0.43 - 0.62) (0.85 - 1.84) (0.38 - 0.58)

0.050 0.045 0.039 0.033 0.224 0.030(0.014 - 0.063) (0.005 - 0.057) (0.010 - 0.052) (0.004 - 0.044) (0.116 - 0.388) (0.011 - 0.045)

0.08 0.07 0.06 0.05 0.26 0.05(0.05 - 0.08) (0.04 - 0.08) (0.04 - 0.07) (0.04 - 0.06) (0.13 - 0.41) (0.04 - 0.07)

1.13 1.12 1.15 0.93 1.35 0.88(0.39 - 1.85) (0.81 - 1.77) (0.62 - 1.97) (0.53 - 1.63) (0.64 - 1.97) (0.44 - 1.55)

8.6 4.3 4.3 5.1 12.7 5.9(1.3 - 38.0) (0.5 - 20.7) (<0.2 - 22.5) (0.3 - 25.7) (1.0 - 41.0) (0.5 - 28.0)

390 1700 2000 800 1200 1100(49 - 1600) (160 - 17000) (1000 - 7100) (190 - 3000) (380 - 8300) (630 - 1600)

920 5100 6900 1800 3000 2900(100 - 3100) (1500 - 87000) (3400 - 36000) (260 - 4800) (920 - 16000) (1700 - 5200)


















pH


Turbidity (NTU)



Bottom


Bottom

KwunTong

Sam KaTsuen

Temperature (℃)

Salinity

Yau MaTei

CausewayBay

To KwaWan

Appendix G



Aldrich Bay(Shau Kei Wan)

Parameter ET2 ET1 PT4 PT3 PT2 TT1Number of samples 6 6 6 6 6 6

23.4 23.6 23.8 23.4 23.6 23.5(18.1 - 28.6) (17.9 - 29.2) (15.3 - 28.5) (15.0 - 28.0) (15.2 - 28.7) (15.7 - 30.7)

32.1 32.2 32.0 32.2 31.9 31.7(29.9 - 32.9) (30.9 - 32.8) (29.8 - 32.9) (30.1 - 33.2) (29.0 - 33.1) (29.6 - 32.6)

4.7 5.7 7.0 7.1 6.6 5.9(2.7 - 6.2) (4.1 - 6.8) (3.8 - 10.1) (4.3 - 10.7) (4.4 - 10.2) (4.0 - 7.9)

4.6 5.6 7.0 7.1 7.0 5.2(2.9 - 6.3) (4.1 - 6.9) (3.8 - 10.1) (4.2 - 10.9) (4.4 - 10.5) (3.0 - 7.6)

66 80 98 98 92 82(39 - 80) (61 - 98) (59 - 130) (65 - 137) (66 - 130) (55 - 109)

64 79 97 99 97 71(44 - 81) (60 - 89) (59 - 131) (64 - 138) (66 - 134) (44 - 98)

7.8 7.9 8.0 8.1 8.0 8.0(7.6 - 7.9) (7.7 - 8.1) (7.9 - 8.1) (7.9 - 8.3) (7.9 - 8.2) (7.8 - 8.2)

3.3 2.8 2.9 3.9 2.8 2.5(3.0 - 4.0) (2.4 - 3.2) (2.0 - 4.5) (2.6 - 5.5) (2.4 - 3.5) (2.0 - 3.1)

1.6 1.7 2.7 1.4 1.4 1.3(1.2 - 2.2) (1.0 - 2.4) (0.5 - 8.8) (0.3 - 2.5) (0.4 - 2.4) (0.7 - 2.2)

2.1 2.8 3.8 1.4 2.1 1.7(1.6 - 3.0) (1.7 - 4.2) (1.0 - 12.5) (<0.5 - 2.2) (0.6 - 4.1) (0.9 - 2.9)

0.8 1.1 1.3 1.2 1.3 1.9(0.6 - 1.3) (0.6 - 1.9) (0.6 - 2.3) (0.6 - 3.6) (0.6 - 3.0) (1.4 - 2.9)

0.142 0.100 0.062 0.034 0.044 0.082(0.070 - 0.197) (0.048 - 0.137) (0.027 - 0.125) (0.014 - 0.057) (0.018 - 0.056) (0.056 - 0.120)

0.004 0.003 0.003 0.002 0.002 0.003(0.001 - 0.009) (0.001 - 0.007) (0.001 - 0.008) (<0.001 - 0.003) (<0.001 - 0.004) (0.001 - 0.006)

0.027 0.021 0.007 0.005 0.007 0.002(0.011 - 0.060) (0.007 - 0.039) (<0.002 - 0.016) (<0.002 - 0.014) (<0.002 - 0.016) (<0.002 - 0.004)

0.123 0.094 0.035 0.036 0.048 0.013(0.071 - 0.207) (0.041 - 0.123) (0.003 - 0.118) (<0.002 - 0.098) (<0.002 - 0.120) (<0.002 - 0.021)

0.29 0.21 0.10 0.07 0.10 0.10(0.23 - 0.38) (0.14 - 0.26) (0.04 - 0.21) (0.02 - 0.16) (0.02 - 0.19) (0.06 - 0.14)

0.25 0.23 0.20 0.15 0.17 0.24(0.18 - 0.32) (0.16 - 0.29) (0.11 - 0.25) (0.13 - 0.18) (0.12 - 0.26) (0.12 - 0.29)

0.40 0.35 0.24 0.19 0.23 0.25(0.32 - 0.52) (0.27 - 0.42) (0.12 - 0.34) (0.14 - 0.28) (0.12 - 0.30) (0.14 - 0.32)

0.025 0.015 0.007 0.006 0.006 0.005(0.017 - 0.032) (0.003 - 0.029) (0.003 - 0.015) (0.003 - 0.010) (0.003 - 0.012) (<0.002 - 0.009)

0.04 0.03 0.03 0.02 0.02 0.03(0.04 - 0.05) (0.03 - 0.04) (<0.02 - 0.05) (<0.02 - 0.02) (<0.02 - 0.03) (<0.02 - 0.04)

0.80 0.53 0.86 0.60 0.71 0.85(0.58 - 1.07) (0.29 - 1.07) (0.35 - 1.60) (0.26 - 0.88) (0.29 - 1.02) (0.27 - 1.67)

2.7 8.8 7.3 3.3 4.9 6.9(0.6 - 7.2) (2.4 - 24.7) (2.0 - 25.5) (1.1 - 5.7) (0.6 - 13.0) (2.9 - 11.0)

540 300 4 2 17 18(150 - 1200) (160 - 600) (1 - 69) (<1 - 13) (<1 - 210) (4 - 95)

1300 630 17 3 100 47(560 - 2100) (300 - 1100) (3 - 300) (<1 - 140) (2 - 1100) (18 - 260)


















Turbidity (NTU)



Bottom


Bottom

pH

ShuenWan

Temperature (℃)

Salinity


ChaiWan

HebeHaven

Yim TinTsai

SaiKung

Appendix G


TuenMun

CheungChau

Hei LingChau

RamblerChannel

GovernmentDockyard

Yau MaTei

CausewayBay

Parameter NS5 SS7 SS8 VS17 VS21 VS19 VS1210 10 10 10 10 10 1078 87 95 74 95 73 85

(68 - 92) (66 - 97) (91 - 99) (47 - 89) (83 - 99) (55 - 88) (65 - 97)-274 -220 -206 -256 -289 -322 -332

(-366 - -189) (-306 - -152) (-287 - -155) (-329 - -144) (-350 - -162) (-397 - -106) (-388 - -209)45 41 36 44 37 50 39

(38 - 50) (29 - 50) (32 - 40) (36 - 57) (34 - 39) (40 - 59) (33 - 51)Total Volatile Soilds (%w/w) 6.7 6.4 7.6 6.9 6.7 6.3 8.5

(6.2 - 7.3) (5.4 - 7.4) (6.7 - 8.4) (4.6 - 8.3) (6.2 - 6.9) (5.2 - 7.4) (5.9 - 9.4)18800 16300 12400 19900 15200 16300 25900

(14000 - 22000) (12000 - 23000) (10000 - 14000) (16000 - 25000) (13000 - 17000) (13000 - 23000) (21000 - 31000)0.8 0.7 0.5 1.0 0.5 1.0 0.9

(0.6 - 1.0) (0.5 - 1.1) (0.5 - 0.6) (0.8 - 1.3) (0.5 - 0.6) (0.7 - 1.4) (0.8 - 1.1)9.9 7.4 6.2 8.1 5.9 23.0 20.1

(0.9 - 22.0) (1.3 - 15.0) (1.0 - 16.0) (0.2 - 19.0) (3.6 - 8.0) (4.1 - 47.0) (4.8 - 39.0)420 450 510 470 370 420 610

(230 - 620) (330 - 540) (300 - 1000) (340 - 590) (310 - 410) (210 - 600) (450 - 720)210 240 180 200 190 200 210

(150 - 260) (170 - 440) (140 - 340) (150 - 240) (170 - 200) (110 - 240) (190 - 250)94 48 58 210 52 130 140

(19 - 220) (14 - 100) (2 - 390) (23 - 540) (3 - 160) (18 - 350) (23 - 290)0.2 0.2 0.1 0.3 0.2 0.2 0.2

(0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.4) (0.2 - 0.5) (0.1 - 0.5) (0.1 - 0.2) (0.1 - 0.3)10.6 7.9 7.0 8.8 7.9 5.3 7.9

(7.3 - 28.0) (6.7 - 9.3) (5.8 - 7.9) (7.6 - 10.0) (7.0 - 9.0) (4.4 - 6.7) (6.1 - 9.0)0.3 <0.1 <0.1 0.7 0.3 0.3 0.9

(0.2 - 0.4) (0.1 - <0.1) (0.1 - <0.1) (0.6 - 1.0) (0.3 - 0.4) (0.1 - 0.6) (0.6 - 1.1)37 48 41 130 46 34 61

(28 - 53) (39 - 61) (33 - 48) (85 - 150) (43 - 50) (22 - 44) (50 - 70)56 89 36 210 150 78 230

(31 - 65) (57 - 130) (30 - 43) (150 - 280) (130 - 170) (35 - 130) (180 - 290)53 50 49 87 52 58 86

(38 - 85) (45 - 57) (42 - 58) (65 - 140) (48 - 57) (29 - 110) (59 - 120)0.09 0.18 0.12 0.21 0.19 0.19 0.76

(0.07 - 0.12) (0.12 - 0.28) (0.09 - 0.15) (0.14 - 0.27) (0.15 - 0.24) (0.13 - 0.29) (0.54 - 1.30)23 21 25 44 25 21 26

(16 - 47) (13 - 24) (21 - 29) (31 - 74) (22 - 28) (15 - 28) (18 - 34)2.0 0.3 0.5 4.2 1.7 1.4 5.5

(1.2 - 2.9) (0.2 - 0.4) (0.4 - 0.7) (2.9 - 6.1) (1.4 - 1.9) (0.5 - 2.5) (3.0 - 7.4)170 140 130 280 220 170 320

(120 - 220) (110 - 230) (100 - 160) (200 - 350) (200 - 240) (98 - 320) (190 - 450)18 18 18 46 20 18 41

(18 - 18) (18 - 22) (18 - 18) (33 - 71) (18 - 24) (18 - 20) (27 - 71)94 100 95 220 96 110 130

(90 - 99) (90 - 130) (90 - 110) (100 - 1100) (90 - 100) (90 - 140) (100 - 170)180 240 81 1600 210 450 790

(22 - 530) (130 - 590) (62 - 100) (480 - 5600) (120 - 280) (140 - 940) (640 - 1000)Note: 1

23

4

5

6

All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), theresult will be taken as 0.5xRL in the calculation.







Mercury (mg/kg)

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)

Cadmium (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)


Total Carbon (%w/w)



Summary statistics of bottom sediment quality of typhoon shelters, 2007- 2011





Arsenic (mg/kg)

Number of samples



Total Solids (%w/w)

Appendix G


To KwaWan

KwunTong

Sam KaTsuen

Aldrich Bay(Shau Kei Wan)

ChaiWan

HebeHaven

Yim TinTsai

ShuenWan

Parameter VS20 VS14 VS13 ES5 ES3 PS4 PS2 TS710 10 10 10 10 10 10 1074 80 82 89 89 87 74 67

(55 - 94) (65 - 92) (60 - 90) (84 - 94) (80 - 96) (81 - 97) (28 - 92) (46 - 90)-311 -355 -288 -366 -280 -199 -178 -319

(-378 - -65) (-383 - -252) (-377 - -84) (-399 - -339) (-356 - -136) (-361 - -21) (-300 - -30) (-375 - -220)47 34 40 31 41 40 50 38

((36 - 54)) ((27 - 45)) ((37 - 43)) ((27 - 35)) ((36 - 49)) ((37 - 43)) ((44 - 65)) ((23 - 52))Total Volatile Soilds (%w/w) 7.4 10.2 9.4 9.2 7.7 8.9 9.2 7.8

(5.2 - 11.0) (8.4 - 11.0) (8.6 - 11.0) (7.8 - 10.0) (5.7 - 8.9) (7.8 - 10.0) (5.5 - 11.0) (5.5 - 12.0)25900 27200 24700 20300 24000 22000 16200 23000

(18000 - 35000) (16000 - 39000) (21000 - 28000) (17000 - 24000) (18000 - 30000) (17000 - 24000) (11000 - 20000) (19000 - 28000)1.2 1.0 1.0 0.8 0.9 0.9 2.1 0.8

(0.8 - 2.0) (0.7 - 1.5) (0.8 - 1.3) (0.7 - 1.1) (0.7 - 1.0) (0.7 - 1.2) (1.4 - 4.3) (0.7 - 1.0)16.4 37.7 9.9 24.2 2.7 6.3 8.1 7.0

(6.7 - 34.0) (13.0 - 76.0) (0.5 - 19.0) (4.2 - 37.0) (0.3 - 6.2) (0.3 - 22.0) (3.4 - 13.0) (2.5 - 12.0)520 610 600 620 510 590 480 640

(460 - 670) (410 - 720) (530 - 760) (530 - 730) (410 - 630) (290 - 740) (280 - 610) (490 - 890)210 200 330 210 240 180 150 230

(190 - 240) (160 - 220) (240 - 670) (170 - 280) (180 - 400) (120 - 220) (77 - 190) (170 - 360)100 380 270 490 110 35 12 99

(12 - 270) (25 - 770) (5 - 970) (59 - 790) (18 - 320) (2 - 140) (1 - 57) (53 - 180)0.2 0.3 0.3 0.2 0.2 0.2 <0.1 0.3

(0.1 - 0.3) (0.1 - 0.4) (0.1 - 0.5) (0.1 - 0.3) (0.1 - 0.3) (0.1 - 0.3) (0.1 - <0.1) (0.1 - 0.5)7.9 6.4 8.0 7.9 9.3 8.1 3.9 9.0

(6.9 - 8.7) (5.4 - 8.4) (6.7 - 10.0) (6.1 - 10.0) (8.0 - 10.0) (6.4 - 9.1) (2.6 - 5.1) (6.6 - 12.0)0.8 2.2 0.9 0.6 0.6 0.2 <0.1 0.4

(0.4 - 1.5) (1.2 - 5.0) (0.7 - 1.0) (0.4 - 1.1) (0.3 - 0.8) (0.1 - 0.3) (0.1 - <0.1) (0.2 - 0.8)83 210 73 58 97 28 16 22

(53 - 110) (100 - 570) (45 - 110) (51 - 66) (75 - 120) (22 - 33) (8 - 19) (14 - 29)550 1500 210 290 270 48 18 170

(240 - 960) (720 - 4200) (170 - 270) (210 - 420) (220 - 330) (37 - 60) (7 - 34) (65 - 680)110 130 100 73 89 39 30 95

(60 - 220) (81 - 400) (93 - 120) (64 - 82) (68 - 130) (36 - 43) (13 - 35) (71 - 120)1.15 0.68 0.96 0.31 0.47 0.13 0.06 0.15

(0.50 - 2.20) (0.41 - 1.40) (0.61 - 2.10) (0.24 - 0.61) (0.32 - 0.65) (0.09 - 0.16) (0.05 - 0.07) (0.05 - 0.27)32 65 24 26 29 9 11 11

(19 - 45) (31 - 170) (20 - 31) (24 - 30) (22 - 40) (7 - 10) (6 - 14) (7 - 17)4.6 7.3 2.8 7.3 17.3 0.3 <0.2 0.4

(3.1 - 5.8) (4.8 - 13.0) (2.4 - 3.3) (5.7 - 9.0) (5.2 - 30.0) (0.2 - 0.3) (0.2 - <0.2) (0.2 - 0.7)250 390 360 370 340 150 70 310

(150 - 380) (270 - 620) (280 - 490) (280 - 550) (250 - 440) (120 - 170) (28 - 80) (180 - 470)77 170 43 24 45 18 18 18

(31 - 130) (63 - 470) (33 - 51) (18 - 29) (29 - 71) (18 - 18) (18 - 18) (18 - 18)18000 150 140 110 120 100 110 92

(560 - 66000) (98 - 300) (100 - 220) (94 - 160) (100 - 170) (90 - 160) (90 - 160) (90 - 96)230000 1100 850 740 570 82 90 130

(7700 - 1100000) (560 - 1900) (410 - 1400) (220 - 1500) (270 - 1000) (60 - 150) (21 - 540) (61 - 240)Note: 1

23

4

5

6

All data are based on the analyses of bulk (unsieved) sediment and are reported on a dry weight basis unless stated otherwise.Total PCBs results are derived from the summation of 18 congeners. If the concentration of a congener is below report limit (RL), the resultwill be taken as 0.5xRL in the calculation.







Mercury (mg/kg)

Nickel (mg/kg)

Silver (mg/kg)

Zinc (mg/kg)

Cadmium (mg/kg)

Chromium (mg/kg)

Copper (mg/kg)

Lead (mg/kg)





Summary statistics of bottom sediment quality of typhoon shelters, 2007- 2011 (continued)



Total Carbon (%w/w)


Arsenic (mg/kg)

Number of samples



Total Solids (%w/w)

Appendix G


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

SS7

NS5VS17

VS12

VS21

SS8

PS4

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel

Government DockyardYau Ma TeiCauseway BayTo Kwa WanKwun TongSam Ka TsuenAldrich Bay (Shau Kei Wan)

Chai WanHebe Haven Yim Tin TsaiShuen Wan

NS5

SS7

SS8

VS17VS21VS19VS12VS20VS14VS13ES5ES3PS4PS2TS7

0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5ES3

SS7

NS5VS17

VS12

VS21

PS4

SS8

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean chromium levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean cadmium levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Lantau Island

Lantau Island

Shenzhen

Cadmium(mg/kg dry solids)

> 4.0

1.6 - 4.0

0 - 1.5

Shenzhen

Chromium(mg/kg dry solids)

> 160

81 - 160

0 - 80

0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

SS7

NS5VS17

VS12SS8

PS4

VS21

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5ES3

SS7

NS5VS17

VS12

VS21

PS4

SS8

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean copper levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean mercury levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Lantau Island

Lantau Island

Appendix G


Shenzhen

Copper(mg/kg dry solids)

> 110

66 - 110

0 - 65

Shenzhen

Mercury(mg/kg dry solids)

> 1.0

0.6 - 1.0

0 - 0.5

0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

NS5VS17

VS12

PS4

SS8

VS21

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

NS5VS17

VS12SS8

PS4

VS21

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean Lead levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean nickel levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

SS7

Lantau Island

Lantau Island

SS7

Appendix G


Shenzhen

Nickel(mg/kg dry solids)

> 40

35 - 40

0 - 34

Shenzhen

Lead(mg/kg dry solids)

> 110

76 - 110

0 - 75

0 5 10km

N

New Territories

Hong Kong Island

Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

NS5VS17

VS12SS8

PS4

VS21

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean zinc levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean silver levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Lantau Island

SS7

Appendix G


0 5 10km

N

New Territories

Hong Kong Island

Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5ES3

SS7

NS5VS17

VS12

VS21

SS8

PS4

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Lantau Island

Shenzhen

Silver(mg/kg dry solids)

>2

1.1 – 2.0

0 – 1.0

Shenzhen

Zinc(mg/kg dry solids)

>270

201 - 270

0 - 200

Appendix G


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

NS5VS17

VS12

PS4

VS21

SS8

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

NS5VS17

VS12SS8

PS4

VS21

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean total polychlorinated biphenyls (PCBs) levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean arsenic levels in typhoon shelter sediments in Hong Kong, 2007 - 2011

Lantau Island

SS7

Lantau Island

SS7

Shenzhen

Arsenic(mg/kg dry solids)

>42

13 - 42

0 - 12

Shenzhen

Total PCBs(μg/kg dry solids)

>180

24 - 180

0 - 23

Appendix G


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

SS7

NS5VS17

VS12SS8

VS21

PS4

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


0 5 10km

N

New Territories


Kowloon

TS7

PS2

VS13

VS14VS20VS19

ES5 ES3

SS7

NS5VS17

VS12SS8

VS21

PS4

Tuen Mun

Cheung Chau

Hei Ling Chau

Rambler Channel



NS5

SS7

SS8


Mean high molecular weight polycyclic aromatic hydrocarbons (PAHs) levelsin typhoon shelter sediments in Hong Kong, 2007 - 2011

Mean low molecular weight polycyclic aromatic hydrocarbons (PAHs) levelsin typhoon shelter sediments in Hong Kong, 2007 - 2011

Lantau Island

Lantau Island

Shenzhen

Low molecular weight PAHs

(μg/kg dry solids)

>3160

551 - 3160

0 - 550

Shenzhen

High molecular weight PAHs

(μg/kg dry solids)

>9600

0 - 1700

1701 - 9600

Appendix H

MARINE WATER QUALITY IN HONG KONG IN 2011 H - 1

N

05

10km

DM

3

DM

5

NM

3N

M1

WM

3 WM

2

SM17

SM6

SM3

SM19

VM7

VM4

EM2

MM

14

PM7

Hon

g K

ong

Isla

nd

New

Ter

ritor

ies

Kow

loon

Shen

zhen

PM3

TM4

TM3

TM6

MM

16

TM8

MM

4

MM

2

MM

17

VM1

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Phyt

opla

nkto

n m

onito

ring

stat

ions

in H

ong

Kong

wat

ers

in 2

011

Lant

au Is

land

Appendix H


Per

cent

age

cont

ribut

ion

of p

hyto

plan

kton

gro

ups

to th

e to

tal n

umbe

r of s

peci

es in

the

nine

Wat

er C

ontro

l Zon

es (2

011)

54%

Dia

tom

32%

Din

ofla

gella

te14

% O

ther

s

Port

She

lter W

CZ

53%

Dia

tom

31%

Din

ofla

gella

te16

% O

ther

s

57%

Dia

tom

28%

Din

ofla

gella

te15

% O

ther

s

Mirs

Bay

WC

Z

59%

Dia

tom

28%

Din

ofla

gella

te

13%

Oth

ers

Wes

tern

Buf

fer W

CZ

58%

Dia

tom

29%

Din

ofla

gella

te

13%

Oth

ers

Sout

hern

WC

Z

54%

Dia

tom

31%

Din

ofla

gella

te

15%

Oth

ers

Vict

oria

Har

bour

WC

Z

54%

Dia

tom

30%

Din

ofla

gella

te16

% O

ther

s

East

ern

Buf

fer W

CZ

50%

Dia

tom

31%

Din

ofla

gella

te

19%

Oth

ers

Dee

p B

ay W

CZ

57%

Dia

tom

28%

Din

ofla

gella

te

15%

Oth

ers

Nor

th W

este

rn W

CZ

Shen

zhen

New

Ter

ritor

ies H

ong

Kon

g Is

land

Kow

loon

N

Lant

au

Isla

nd

Tolo

Har

bour

& C

hann

el W

CZ

Appendix H


Per

cent

age

cont

ribut

ion

of p

hyto

plan

kton

gro

ups

to th

e to

tal d

ensi

ty in

the

nine

Wat

er C

ontro

l Zon

es (2

011)

Shen

zhen

New

Ter

ritor

ies H

ong

Kon

g Is

land

Kow

loon

65%

Dia

tom

3% D

inof

lage

llate

32%

Oth

ers

Port

She

lter W

CZ

76%

Dia

tom

2% D

inof

lage

llate

22%

Oth

ers

East

ern

Buf

fer W

CZ

62%

Dia

tom

1% D

inof

lage

llate

37%

Oth

ers

Vict

oria

Har

bour

WC

Z

71%

Dia

tom

2% D

inof

lage

llate

27%

Oth

ers

Sout

hern

WC

Z

55%

Dia

tom

3% D

inof

lage

llate

42%

Oth

ers

Wes

tern

Buf

fer W

CZ

54%

Dia

tom

3% D

inof

lage

llate

43%

Oth

ers

Mirs

Bay

WC

Z

49%

Dia

tom

1% D

inof

lage

llate

50%

Oth

ers

Dee

p B

ay W

CZ

N

Lant

au

Isla

ndN

orth

Wes

tern

WC

Z

45%

Dia

tom

2% D

inof

lage

llate

53%

Oth

ers

Tolo

Har

bour

& C

hann

el W

CZ

60%

Dia

tom

4% D

inof

lage

llate

36%

Oth

ers

Appendix H


Ann

ual m

ean

dens

ities

(cel

l/mL)

of t

otal

phy

topl

ankt

on a

t 25

mon

itorin

g st

atio

ns in

Hon

g K

ong

wat

ers

in 2

011

N

05

10km

Hon

g K

ong

Isla

nd

New

Ter

ritor

ies

Kow

loon

Shen

zhen

DM

3

DM

5

NM

3N

M1

WM

3 WM

2

SM17

SM6

SM3

SM19

VM7

VM4

VM1

EM2

MM

14

PM7

PM3

TM4

TM3

TM6

TM8

MM

16

MM

17

MM

4M

M2

Tota

l phy

topl

ankt

onde

nsity

(cel

l/mL)

> 90

00

7501

-90

00

6001

-75

00

4501

-60

00

3001

-45

00

1501

-30

00

0

-150

0

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Lant

au Is

land

Appendix H


Ann

ual m

ean

dens

ities

(cel

l/mL)

of d

iato

ms

at 2

5 m

onito

ring

stat

ions

in H

ong

Kon

g w

ater

s in

201

1

N

05

10km

Hon

g K

ong

Isla

nd

New

Ter

ritor

ies

Kow

loon

Shen

zhen

MM

14

Dia

tom

den

sity

(cel

l/mL)

> 90

00

7501

-90

00

6001

-75

00

4501

-60

00

3001

-45

00

1501

-30

00

0

-150

0

TM8

MM

16

MM

17

MM

4M

M2

DM

3

DM

5

NM

3N

M1

WM

3 WM

2

SM17

SM6

SM3

SM19

VM7

VM4

VM1

EM2

PM7

PM3

TM4

TM3

TM6

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Lant

au Is

land

Appendix H


Ann

ual m

ean

dens

ities

(cel

l/mL)

of d

inof

lage

llate

s at

25

mon

itorin

g st

atio

ns in

Hon

g K

ong

wat

ers

in 2

011

N

05

10km

Hon

g K

ong

Isla

nd

New

Ter

ritor

ies

Kow

loon

Shen

zhen

EM2

MM

14

PM7

PM3

TM4

TM3

TM6

TM8

MM

16

MM

17

MM

4M

M2

Din

ofla

gella

tede

nsity

(cel

l/mL)

> 30

0

251

-300

201

-250

151

-200

101

-150

51 -

100

0 -5

0

DM

3

DM

5

NM

3N

M1

WM

3 WM

2

SM17

SM6

SM3

SM19

VM7

VM4

VM1

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Lant

au Is

land

Appendix H


Ann

ual m

ean

dens

ities

(cel

l/mL)

of o

ther

phy

topl

ankt

on g

roup

s at

25

mon

itorin

g st

atio

ns in

Hon

g K

ong

wat

ers

in 2

011

N

05

10km

Hon

g K

ong

Isla

ndLa

ntau

Isla

nd

New

Ter

ritor

ies

Kow

loon

Shen

zhen

MM

14

Oth

er p

hyto

plan

kton

grou

ps d

ensi

ty (c

ell/m

L)

> 30

00

2501

-30

00

2001

-25

00

1501

-20

00

1001

-15

00

501

-100

0

0 -

500

DM

3

DM

5

NM

3N

M1

WM

3 WM

2

SM17

SM6

SM3

SM19

VM7

VM4

VM1

EM2

PM7

PM3

TM4

TM3

TM6

TM8

MM

16

MM

17

MM

4M

M2

Bou

ndar

y of

the

Hon

g K

ong

Spe

cial

Adm

inis

trativ

e R

egio

n

Lant

auIs

land

Appendix H


Freq

uenc

y of

red

tides

in 1

0 W

ater

Con

trol Z

ones

in H

ong

Kon

g, 1

980

-201

1

Shen

zhen

New

Ter

ritor

ies H

ong

Kon

g Is

land

Kow

loon

N

05101520

8082

8486

8890

9294

9698

0002

0406

0810

Mirs

Bay

WC

Z

051015202530354045

8082

8486

8890

9294

9698

0002

0406

0810

Tolo

Har

bour

& C

hann

el W

CZ

05101520

8082

8486

8890

9294

9698

0002

0406

0810

Port

Shel

ter W

CZ

0246810

8082

8486

8890

9294

9698

0002

0406

0810

East

ern

Buffe

r WC

Z

0246810

8082

8486

8890

9294

9698

0002

0406

0810

Junk

Bay

WC

Z

0246810

8082

8486

8890

9294

9698

0002

0406

0810

Vict

oria

Har

bour

WC

Z

05101520

8082

8486

8890

9294

9698

0002

0406

0810

Sout

hern

WC

Z

0246810

8082

8486

8890

9294

9698

0002

0406

0810

Wes

tern

Buf

fer W

CZ

0246810

8082

8486

8890

9294

9698

0002

0406

0810

Nor

th W

este

rn W

CZ

0246810

8082

8486

8890

9294

9698

0002

0406

0810

Dee

p Ba

y W

CZ

Sou

rce:

Agr

icul

ture

, Fis

herie

s an

d C

onse

rvat

ion

Dep

artm

ent a

nd E

nviro

nmen

tal P

rote

ctio

n D

epar

tmen

t

Lant

auIs

land

Appendix H


Occurrence of red tides in Hong Kong waters, 1980 – 2011(Sources: Agriculture, Fisheries and Conservation Department and Environmental Protection Department)

Yearly Distribution

Monthly Distribution

Total red tide occurrences1980 - 2011 : 840 cases

- Red tide occurrences in 2011

Appendix H


Seasonal occurrence of red tides caused by different phytoplankton groups in Hong Kong, 1980 – 2011(Sources: Agriculture, Fisheries and Conservation Department and Environmental Protection Department)

Red tides caused by other minor algal groups : 145 cases

Red tides caused by dinoflagellates : 538 cases

Red tides caused by diatoms : 137 cases

Appendix H


Abun

danc

e an

d fre

quen

cy o

f the

dom

inan

t phy

topl

ankt

on s

peci

es in

diffe

rent

Wat

er C

ontro

l Zon

es (W

CZs

) in

2011

.

Spec

ies

%

Abu

ndan

ce1

Freq

uenc

y2

Spec

ies

% A

bund

ance

1 Fr

eque

ncy2

Sp

ecie

s %

Abu

ndan

ce1

Freq

uenc

y2

To

lo H

arbo

ur &

Cha

nnel

Port

She

lter

N

orth

Wes

tern

D

iato

ms

D

iato

ms

D

iato

ms

Cha

etoc

eros

spp.

40

.2

12

C

haet

ocer

os sp

p.

43.3

11

Thal

assi

osir

a sp

p.

71.0

12

Th

alas

sios

ira

spp.

13

.9

12

C

ylin

drot

heca

clo

ster

ium

16

.6

12

Skel

eton

ema

cost

atum

10

.6

12

Cyl

indr

othe

ca c

lost

eriu

m

12.5

11

Thal

assi

osir

a sp

p.

13.0

12

Cha

etoc

eros

spp.

7.

9 8

Din

ofla

gella

tes

D

inof

lage

llate

s

Din

ofla

gella

tes

Gym

nodi

nium

spp.

61

.9

12

G

ymno

dini

um sp

p.

42.0

11

Gym

nodi

nium

spp.

45

.6

9 Ka

reni

a m

ikim

otoi

6.

8 5

Sc

ripp

siel

la sp

p.

16.2

8

G

yrod

iniu

m fu

sifo

rme

13.6

7

Prot

oper

idin

ium

spp.

6.

0 6

Am

phid

iniu

m sp

p.

11.1

11

Am

phid

iniu

msp

p.

10.2

5

Oth

ers

O

ther

s

Oth

ers

smal

l fla

gella

tes

84.6

12

smal

l fla

gella

tes

87.1

12

smal

l fla

gella

tes

80.8

12

Pl

agio

selm

is p

rolo

nga

10.8

12

Pl

agio

selm

is p

rolo

nga

9.1

12

Plag

iose

lmis

pro

long

a 14

.0

12

Het

eros

igm

a ak

ashi

wo

2.4

3

Tele

aula

x ac

uta

3.3

11

Tele

aula

x ac

uta

4.1

12

Mir

s Bay

Vic

tori

a H

arbo

ur

W

este

rn B

uffe

r

D

iato

ms

D

iato

ms

D

iato

ms

Cha

etoc

eros

spp.

24

.6

12

Sk

elet

onem

a co

stat

um

38.2

12

Cha

etoc

eros

spp.

27

.2

9 C

ylin

drot

heca

clo

ster

ium

12

.4

11

C

haet

ocer

os sp

p.

22.0

11

Skel

eton

ema

cost

atum

25

.1

11

Lept

ocyl

indr

us d

anic

us

12.1

11

Th

alas

sios

ira

spp.

14

.1

12

Thal

assi

osir

a sp

p.

12.7

12

D

inof

lage

llate

s

Din

ofla

gella

tes

D

inof

lage

llate

s

G

ymno

dini

um sp

p.

41.3

12

G

ymno

dini

um sp

p.

47.5

11

G

ymno

dini

um sp

p.

67.2

12

Ak

ashi

wo sa

ngui

ne

13.4

3

G

yrod

iniu

m fu

sifo

rme

14.9

9

Am

phid

iniu

m sp

p.

10.1

8

Kare

nia

mik

imot

oi

12.2

6

Pr

otop

erid

iniu

m sp

p.

7.7

6

Gyr

odin

ium

spp.

5.

3 4

Oth

ers

O

ther

s

Oth

ers

smal

l fla

gella

tes

82.6

12

smal

l fla

gella

tes

81.9

12

smal

l fla

gella

tes

81.1

12

Pl

agio

selm

is p

rolo

nga

12.1

12

Pl

agio

selm

is p

rolo

nga

12.8

12

Pl

agio

selm

is p

rolo

nga

14.6

12

Te

leau

lax

acut

a 4.

5 12

Tele

aula

x ac

uta

4.4

12

Te

leau

lax

acut

a 3.

2 12

E

aste

rn B

uffe

r

Sout

hern

Dee

p B

ay

Dia

tom

s

Dia

tom

s

Dia

tom

s

As

teri

onel

lops

is g

laci

alis

31

.8

2

Thal

assi

osir

a sp

p.

18.9

12

Cha

etoc

eros

spp.

34

.8

8 Sk

elet

onem

a co

stat

um

26.1

8

Sk

elet

onem

a co

stat

um

18.1

10

Sk

elet

onem

a co

stat

um

27.2

12

Ps

eudo

-nitz

schi

a sp

p.

12.1

7

Cha

etoc

eros

spp.

15

.4

12Th

alas

sios

ira

spp.

19

.8

12

Din

ofla

gella

tes

D

inof

lage

llate

s

Din

ofla

gella

tes

Gym

nodi

nium

spp.

38

.9

7

Gym

nodi

nium

spp.

53

.4

11

Gym

nodi

nium

spp.

50

.2

9Pr

otop

erid

iniu

m sp

p.

11.7

7

Am

phid

iniu

m sp

p.

13.4

11

Gyr

odin

ium

fusi

form

e 11

.3

7 Am

phid

iniu

m sp

p.

9.2

6

Prot

oper

idin

ium

spp.

8.

9 8

Sc

ripp

siel

la sp

p.

11.0

3

Oth

ers

O

ther

s

Oth

ers

smal

l fla

gella

tes

82.0

12

sm

all f

lage

llate

s 86

.0

12

smal

l fla

gella

tes

73.1

12

Pl

agio

selm

is p

rolo

nga

11.6

12

Pl

agio

selm

is p

rolo

nga

11.0

12

Pl

agio

selm

is p

rolo

nga

15.1

12

Te

leau

lax

acut

a 5.

4 11

Tele

aula

x ac

uta

2.4

12

Te

leau

lax

acut

a 8.

0 12

1

% o

f spe

cies

/gro

up in

dia

tom

s, di

nofla

gella

tes a

nd o

ther

phy

topl

ankt

on

2 N

umbe

r of o

ccur

renc

es o

ut o

f 12

sam

plin

g oc

casi

ons.

Occurrence and distribution of red tide species in different Water Control Zones (WCZs), 1980 -2011 Number of occurrences

Species Tolo Harbour

& Channel WCZ

Mirs Bay WCZ

Eastern Buffer WCZ

Port Shelter

WCZ

Junk Bay WCZ

Victoria Harbour

WCZ

Southern Waters WCZ

North Western

WCZ

Western Buffer WCZ

Deep Bay WCZ

Total

Noctiluca scintillans 64 69 57 58 6 7 261 Skeletonema costatum 23 3 1 3 9 12 3 9 2 65 Mesodinium rubrum 8 9 10 1 17 7 2 2 56 Gonyaulax polygramma 21 8 15 6 1 51 Prorocentrum minimum 44 1 45 Ceratium furca 15 7 13 35 Prorocentrum triestinum 33 33 Scrippsiella trochoidea 15 5 3 1 24 Heterosigma akashiwo 15 2 3 1 21 Heterocapsa circularisquama 13 3 16 Prorocentrum sigmoides 14 1 1 16 Prorocentrum dentatum 8 4 1 1 14 Trichodesmium erythraeum 6 5 3 14 Thalassiosira nordenskioeldii 2 3 1 4 2 12 Akashiwo sanguinea 3 3 1 1 2 1 11 Karenia mikimotoi 6 2 3 11 Phaeocystis globosa 1 9 1 11 Prorocentrum micans 4 4 1 1 1 11 Leptocylindrus minimus 10 10 Cryptomonas spp. 8 8 Dactyliosolen fragilissimus 6 1 1 8 Karenia digitata 1 3 2 2 8 Thalassiosira mala 6 2 8 Chaetoceros spp. 6 1 7 Plagioselmis prolonga 7 7 Thalassiosira proschkinae 6 1 7 Cochlodinium spp. 2 2 1 1 6 Gyrodinium instriatum 1 1 2 1 1 6 Dictyocha speculum 2 2 1 5 Thalassiosira spp. 2 1 2 5 Eutreptiella spp. 4 4 Haematococcus pluvialis 4 4 Leptocylindrus danicus 3 1 4 Pseudo-nitzschia pseudodelicatissima 1 2 1 4 Chaetoceros curvisetus 1 1 1 3 Chaetoceros socialis 1 2 3 Chattonella marina 2 1 3 Chattonella ovata 2 1 3 Cochlodinium polykrikoides 1 2 3 Gymnodinium simplex 3 3 Karenia longicanalis 1 1 1 3 Prorocentrum balticum 1 1 1 3 Pseudo-nitzschia seriata 1 2 3 Teleaulax acuta 3 3 Trichodesmium spp. 1 1 1 3 Alexandrium catenella 1 1 2 Alexandrium tamarense 2 2 Cerataulina pelagica 2 2 Chaetoceros salsugineum 1 1 2 Chattonella spp. 1 1 2 Eucampia zodiacus 1 1 2 Fibrocapsa japonica 1 1 2 Gymnodinium spp. X 2 2 Heterocapsa rotundata 2 2 Nitzschia longissima 1 1 2 Prorocentrum spp. 1 1 2 Protopolykrokos distortus 1 1 2 Pseudo-nitzschia spp. 2 2 Thalassiosira tealata 2 2 Thalassiosira weissflogii 2 2 Chaetoceros pseudocrinitus 1 1 Chaetoceros pseudocurvisetus 1 1 Chaetoceros spp.0105 1 1 Chaetoceros tenuissimus 1 1 Chlamydomonas spp. 1 1 Chlamydomonas uva-maris 1 1 Cyclotella caspia 1 1 Cyclotella spp. 1 1 Cylindrotheca closterium 1 1 Cyttarocylis spp. 1 1 Guinardia delicatula 1 1 Guinardia striata 1 1 Gymnodinium spp. 1 1 Gyrodinium spirale 1 1 Hermesinum adriaticum 1 1 Karenia papilionacea 1 1 Karlodinium micrum 1 1 Katodinium rotundatum 1 1 Leptocylindrus spp. 1 1 Navicula spp. 1 1 Odontella mobiliensis 1 1 Odontella sinensis 1 1 Pedinomonadaceae spp. 1 1 Protoperidinium quinquecorne 1 1 Takayama pulchella 1 1 Thalassomonas spp. 1 1 Trichodesmium thiebautii 1 1 Total : 87 species 388 152 1 128 7 14 144 29 23 12 898

Note: a red tide incident may involve more than one causative species. Source: Agriculture, Fisheries and Conservation Department and Environmental Protection Department

Appendix H


Appendix I

MARINE WATER QUALITY IN HONG KONG IN 2011 I - 1

WaterControl Zone

Tolo Harbour& Channel

Southern

Port Shelter

Junk Bay

Deep Bay

Mirs Bay

NorthWestern

WesternBuffer

EasternBuffer

VictoriaHarbour

OverallDissolvedOxygen E. coli

UnionisedAmmonia

Total InorganicNitrogen

% co

mpl

ianc

e%

com

plia

nce

% co

mpl

ianc

e%

com

plia

nce

% co

mpl

ianc

e%

com

plia

nce

% co

mpl

ianc

e%

com

plia

nce

% co

mpl

ianc

e%

com

plia

nce

YearYear YearYearYear

Level of compliance with key marine Water Quality Objectives for10 Water Control Zones in Hong Kong, 2002 - 2011

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

NOT APPLICABLE

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

020406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 110

20406080

100

02 03 04 05 06 07 08 09 10 11

Appendix I


Overall level of compliance with key marine Water Quality Objectives in Hong Kong, 1986 - 2011

Level of compliance with key marine Water Quality Objectives in Hong Kong, 2002 - 2011

79 81

87

79

75

87

808383

87 87 8785

70

79

87

73 73

76

8581

77

82

76 80

81

50

60

70

80

90

100

86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11Year

% co

mpl

iance

E. coli

0

20

40

60

80

100

02 03 04 05 06 07 08 09 10 11Year

% co

mpl

iance

Unionised Ammonia

0

20

40

60

80

100

02 03 04 05 06 07 08 09 10 11Year

% co

mpl

iance

Dissolved Oxygen

0

20

40

60

80

100

02 03 04 05 06 07 08 09 10 11Year

% co

mpl

iance

Total Inorganic Nitrogen

0

20

40

60

80

100

02 03 04 05 06 07 08 09 10 11Year

% co

mpl

iance

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

VM14

VM4

VM5

VM6

VM7

VM12

DM

2

Lant

auIs

land

VM15

VM2

VM1

SM3

NM

5

MM

8

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

dis

solv

ed o

xyge

n in

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

DM

4

DM

3

SM19

SM20

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

DM

1

TM7

TM5

TM4

TM8

TM2

TM3

TM6

PM6

DM

2

Lant

auIs

land

DM

3

PM2

EM1

VM1

VM2

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

5-d

ay B

ioch

emic

al O

xyge

n D

eman

d in

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

VM14

VM12

MM

8

MM

17

Appendix I


N

05

10km

Hon

g K

ong

Isla

ndLa

ntau

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

NM

1

NM

5

WM

2

WM

3

WM

4

VM7

VM8

PM2

PM6

TM4 TM

2

VM5

EM2

EM3

Lant

auIs

land

TM3

TM6

VM1

EM1

TM5

TM7

PM3

JM3

JM4

VM2

VM4

SM11

SM1

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

E. c

olii

n m

arin

e w

ater

s of

Hon

g Ko

ng, 1

986

-20

11

DM

4

SM12

VM15

VM14

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

DM

4

DM

1

NM

3

DM

3DM

2

NM

5

DM

5

NM

2

VM1

VM2

VM12

VM15

NM

1

TM2

TM3

TM4

TM6

TM7

Lant

auIs

land

SM9

SM11

VM8

VM6

VM4

JM3

EM1

EM2

EM3

TM5

WM

2VM

5JM

4MM

1

VM14 VM

7

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

am

mon

ia n

itrog

en in

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

SM12

WM

4

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

DM

4

VM14

WM

4N

M3

SM12

SM11

SM13

VM8

VM7

VM6

VM5

DM

3

TM2

TM3

TM5

TM4

TM6

TM7

Lant

auIs

land

SM10

VM12

DM

5

SM9

SM2

SM4

SM7W

M3

WM

2

VM4

SM1

MM

1

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

nitr

ate

nitr

ogen

in m

arin

e w

ater

s of

Hon

g Ko

ng, 1

986

-20

11

NM

5

SM17

VM2

PM8

MM

15

VM15

PM11PM

9

SM3

SM5

SM18

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

DM

4

DM

3

DM

2D

M1

WM

4N

M3

NM

5

SM12

SM11

SM13

DM

5

VM8

TM2

TM3

TM5

TM4

TM6

TM7

NM

2

VM1

VM15

WM

2SM

9La

ntau

Isla

ndLa

ntau

Isla

nd

SM7

SM4

JM3

SM10

EM1

EM2

VM2

VM4

WM

3

JM4

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

tota

l ino

rgan

ic n

itrog

en in

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

SM2

SM3

SM17

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

TM2

VM14

VM15

MM

3

SM17

PM11

MM

16

MM

6

MM

15

MM

1

MM

14

NM

6

TM7

TM3

TM5

TM4

TM6

VM12

MM

2

MM

4

MM

5M

M7

MM

8

SM18

VM1

VM2

VM4

VM5

VM6

MM

13

DM

4

SM19

Lant

auIs

land

WM

1

PM2

PM1

EM1

EM2

EM3

JM3

JM4

PM4

PM6

TM8

SM1

SM2

SM5

SM6

SM9

SM10

VM7

WM

3

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

ort

hoph

osph

ate

phos

phor

us in

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

DM

1

NM

1N

M2

SM13

PM3

PM7

PM9

SM3

SM11

SM20

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

NM

6

MM

2M

M3

MM

7

SM10

Lant

auIs

land

DM

2

MM

4

DM

5

NM

3

NM

5

SM13

WM

4

WM

2

WM

1

VM2

VM4

SM9

PM1

PM7

PM8

PM3

PM4

MM

5

MM

6

MM

8

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

chl

orop

hyll-

ain

mar

ine

wat

ers

of H

ong

Kong

, 198

6 -

2011

MM

17 PM9

TM2

TM4

SM11

SM17DM

3

Appendix I


N

05

10km

Hon

g K

ong

Isla

nd

22°20

’N

22°10

’N

114°

00’E

114°

10’E

113°

50’E

114°

20’E

22°20

’N

22°10

’N

New

Ter

ritor

ies

Kow

loon

22°30

’N

114°

30’E

TM7

SM9

VM12

WM

3

VM14

WM

4

VM8

SM18

SM7

WM

2

TM8

VM5

VM6

VM7

SM5

VM1

VM2

VM4

WM

1

TM2

TM3

EM3

PM2

TM6

TM5

TM4

EM1

EM2

JM4

JM3

PM1

PM9

PM7

PM8

PM6

PM3

PM4

SM6

SM11

SM4

DM

5

DM

4

Lant

auIs

land

SM10

SM12

SM13

SM17DM

3

DM

2

114°

20’E

114°

10’E

114°

00’E

113°

50’E

Shen

zhen

22°30

’N

114°

30’E

Incr

easi

ng T

rend

Dec

reas

ing

Tren

d

Long

-ter

m c

hang

es in

tem

pera

ture

in m

arin

e w

ater

s of

Hon

g Ko

ng, 1

986

-20

11

MM

17

SM19

marine water quality in hong kong in 2011 water quality in hong kong in 2011 introduction the hong...

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