Impact Water Quality Monitoring Results at IS10 - Mid-Ebb Tide Impact Water Quality Monitoring Results at IS10 - Mid-Flood Tide
Date Weather Sea Sampling Water  Sampling Temperature (oC) pH Salinity (ppt) DO Saturation (%) Dissolved Oxygen (mg/L) Turbidity(NTU) Suspended Solids (mg/L) Date Weather Sea Sampling Water  Sampling Temperature (oC) pH Salinity (ppt) DO Saturation (%) Dissolved Oxygen (mg/L) Turbidity(NTU) Suspended Solids (mg/L)
   Condition  Condition** Time Depth (m) Depth (m) Value Average Value Average Value Average Value Average Value Average DA* Value Average DA* Value Average DA*    Condition  Condition** Time Depth (m) Depth (m) Value Average Value Average Value Average Value Average Value Average DA* Value Average DA* Value Average DA*
2-May-12 Cloudy Moderate 11:24 12 Surface 1 26.6 26.4 8.1 8.1 12.1 13.0 87.0 88.6 6.5 6.6 6.2 4.4 4.4 6.8 3.7 3.2 3.1 2-May-12 Fine Moderate 14:40 11 Surface 1 27.1 27.2 8.2 8.2 13.8 13.9 93.3 95.6 6.9 7.0 6.7 3.2 3.3 6.7 2.4 2.3 2.3
      26.2 8.1 13.8 90.2 6.8 4.3 2.7       27.2 8.2 13.9 97.9 7.2 3.4 2.2
      Middle 6 24.7 24.6 8.0 8.0 21.2 21.8 77.9 78.9 5.7 5.8 7.8 7.8 2.0 2.6       Middle 6 25.3 25.4 8.1 8.1 19.2 19.0 82.2 85.3 6.1 6.3 5.1 5.2 2.3 2.2
      24.5 8.0 22.4 79.9 5.9 7.7 3.2       25.5 8.1 18.7 88.4 6.5 5.2 2.1
      Bottom 11 23.9 23.9 8.0 8.1 27.2 27.3 77.0 79.4 5.6 5.7 5.7 8.1 8.1 3.3 3.5       Bottom 10 23.8 23.8 8.1 8.1 27.5 27.5 91.1 86.1 6.6 6.2 6.2 11.6 11.5 2.5 2.4
        23.8 8.1 27.3 81.7 5.9 8.0 3.7         23.7 8.1 27.5 81.1 5.9 11.4 2.3
4-May-12 Sunny Moderate 12:47 12 Surface 1 28.1 28.1 8.3 8.3 11.7 11.8 98.5 102.4 7.2 7.5 7.0 7.8 7.7 7.6 2.3 2.6 2.6 4-May-12 Cloudy Moderate 16:34 12 Surface 1 28.2 28.2 8.4 8.3 15.4 15.4 117.3 112.9 8.4 8.1 7.6 5.7 5.6 5.7 2.4 2.6 2.9
      28.0 8.3 11.9 106.3 7.8 7.5 2.8       28.2 8.3 15.4 108.5 7.8 5.5 2.7
      Middle 6 25.6 25.6 8.1 8.1 20.3 20.3 91.6 89.9 6.7 6.5 7.6 7.5 3.0 2.6       Middle 6 26.2 26.2 8.2 8.2 18.4 18.5 98.3 95.5 7.2 7.0 5.8 5.8 2.5 2.4
      25.7 8.1 20.4 88.1 6.4 7.3 2.1       26.2 8.2 18.6 92.7 6.8 5.7 2.3
      Bottom 11 25.1 25.3 8.1 8.1 24.0 24.5 98.1 98.3 7.0 7.0 7.0 7.7 7.7 2.6 2.5       Bottom 11 25.4 25.5 8.2 8.2 23.6 23.2 115.6 112.0 8.3 8.0 8.0 5.8 5.8 4.6 3.8
        25.4 8.1 25.1 98.4 7.0 7.7 2.4         25.7 8.1 22.9 108.3 7.8 5.7 2.9
7-May-12 Sunny Moderate 12:21 12 Surface 1 26.2 26.0 8.0 8.1 16.8 16.9 84.4 83.4 6.2 6.2 6.1 3.7 3.7 5.4 4.2 3.9 3.5 7-May-12 Sunny Moderate 08:24 12 Surface 1 26.0 26.1 8.1 8.1 18.1 17.7 84.9 85.7 6.2 6.3 6.2 7.2 7.2 10.7 3.7 4.7 5.8
      25.8 8.1 17.0 82.4 6.1 3.7 3.5       26.1 8.1 17.3 86.5 6.4 7.1 5.6
      Middle 6 25.4 25.3 8.1 8.1 22.2 22.3 81.6 81.9 5.9 5.9 5.9 6.0 4.1 3.8       Middle 6 25.8 25.8 8.1 8.1 20.1 20.0 83.5 83.8 6.1 6.1 11.9 12.1 5.1 5.1
      25.3 8.1 22.3 82.1 6.0 6.1 3.5       25.8 8.1 20.0 84.1 6.1 12.2 5.1
      Bottom 11 25.2 25.1 8.1 8.1 24.9 25.0 81.6 81.8 5.8 5.9 5.9 6.5 6.4 3.0 2.9       Bottom 11 25.8 25.8 8.1 8.1 20.5 20.3 83.7 84.5 6.1 6.1 6.1 13.2 12.9 7.3 7.5
        25.0 8.1 25.2 82.0 5.9 6.2 2.8         25.9 8.1 20.1 85.3 6.2 12.6 7.6
9-May-12 Sunny Moderate 14:06 12 Surface 1 26.6 26.7 8.1 8.1 19.1 18.8 89.5 89.8 6.5 6.5 6.3 2.8 2.8 3.4 3.5 4.1 4.4 9-May-12 Sunny Moderate 09:39 12 Surface 1 27.1 27.1 8.1 8.1 16.2 16.1 91.7 91.1 6.7 6.6 6.5 5.8 5.8 7.7 3.2 3.9 4.8
      26.7 8.1 18.5 90.1 6.5 2.7 4.7       27.0 8.1 16.1 90.5 6.6 5.8 4.6
      Middle 6 25.9 25.8 8.1 8.1 22.0 22.0 85.4 84.7 6.1 6.1 3.6 3.5 4.4 4.7       Middle 6 26.5 26.5 8.1 8.1 18.5 18.8 87.4 87.0 6.3 6.3 8.7 8.7 5.4 5.8
      25.8 8.1 22.0 84.0 6.0 3.4 4.9       26.5 8.1 19.0 86.5 6.3 8.7 6.2
      Bottom 11 25.5 25.6 8.1 8.1 24.7 24.6 83.2 85.4 5.9 6.1 6.1 3.8 3.8 5.1 4.5       Bottom 11 26.5 26.5 8.1 8.1 19.2 19.4 86.6 88.0 6.3 6.3 6.3 8.5 8.6 5.1 4.6
      25.6 8.1 24.5 87.6 6.2 3.7 3.8         26.6 8.1 19.6 89.3 6.4 8.6 4.1
11-May-12 Sunny Moderate 15:36 12 Surface 1 26.9 26.9 8.3 8.3 21.2 21.1 100.1 101.1 7.1 7.2 6.9 2.7 2.7 2.9 1.2 1.5 1.9 11-May-12 Cloudy Moderate 11:08 12 Surface 1 27.8 27.8 8.4 8.4 16.4 16.4 103.0 103.2 7.4 7.4 7.0 3.7 3.7 4.1 1.0 1.4 1.4
      27.0 8.3 21.1 102.0 7.2 2.7 1.7       27.7 8.3 16.5 103.3 7.4 3.7 1.7
      Middle 6 26.1 26.1 8.2 8.2 23.2 23.1 92.0 91.1 6.5 6.5 2.7 2.8 1.3 1.5       Middle 6 26.0 26.0 8.2 8.2 22.7 23.3 93.2 92.9 6.7 6.6 3.8 3.8 1.3 1.6
      26.1 8.2 23.1 90.2 6.4 2.9 1.7       25.9 8.2 23.9 92.6 6.6 3.7 1.8
      Bottom 11 25.3 25.3 8.2 8.2 26.7 26.7 89.7 88.3 6.3 6.2 6.2 3.2 3.3 1.8 2.8       Bottom 11 25.5 25.5 8.2 8.2 25.9 25.9 94.0 92.5 6.6 6.5 6.5 4.8 4.8 1.4 1.3
        25.3 8.2 26.7 86.8 6.1 3.3 3.7         25.5 8.2 25.9 91.0 6.4 4.7 1.1
14-May-12 Sunny Moderate 10:14 12 Surface 1 27.4 27.4 8.4 8.4 16.8 16.8 104.4 103.6 7.5 7.5 6.6 2.7 2.7 2.9 2.1 3.0 3.5 14-May-12 Sunny Moderate 13:15 12 Surface 1 28.8 28.7 8.6 8.6 14.3 14.5 127.0 127.4 9.1 9.1 7.4 2.3 2.3 2.4 3.6 3.2 3.4
      27.4 8.4 16.8 102.8 7.4 2.7 3.8       28.6 8.6 14.7 127.8 9.1 2.2 2.7
      Middle 6 26.3 26.3 8.2 8.2 22.7 22.7 80.0 79.2 5.7 5.6 2.7 2.8 3.3 3.9       Middle 6 26.3 26.3 8.2 8.2 22.9 23.2 80.7 81.0 5.7 5.7 2.3 2.3 3.9 3.7
      26.2 8.2 22.7 78.3 5.6 2.9 4.5       26.2 8.2 23.4 81.3 5.8 2.3 3.4
      Bottom 11 25.5 25.5 8.1 8.1 26.1 26.2 76.2 75.7 5.4 5.3 5.3 3.2 3.2 3.3 3.6       Bottom 11 25.2 25.2 8.1 8.1 27.4 27.4 79.3 77.4 5.6 5.5 5.5 2.5 2.5 2.6 3.3
      25.5 8.1 26.3 75.1 5.3 3.1 3.9         25.2 8.1 27.4 75.5 5.3 2.4 4.0
16-May-12 Rainy Moderate 11:42 12 Surface 1 27.8 27.8 8.4 8.4 18.0 18.0 102.3 102.3 7.3 7.3 6.3 3.1 3.3 4.8 2.1 2.6 5.2 16-May-12 Cloudy Moderate 15:26 12 Surface 1 28.1 28.1 8.4 8.4 17.4 17.4 105.2 105.3 7.5 7.5 6.6 2.5 2.6 4.4 3.8 3.4 4.2
      27.8 8.4 17.9 102.2 7.3 3.4 3.1       28.1 8.5 17.5 105.3 7.5 2.7 2.9
      Middle 6 26.4 26.4 8.2 8.2 23.8 23.9 74.3 74.4 5.3 5.3 4.7 4.8 6.8 7.2       Middle 6 26.4 26.4 8.2 8.2 23.4 23.4 78.6 79.4 5.6 5.6 4.6 4.5 5.9 5.4
      26.4 8.2 23.9 74.5 5.3 4.9 7.5       26.4 8.2 23.4 80.2 5.7 4.3 4.9
      Bottom 11 25.4 25.4 8.1 8.2 27.7 27.8 72.1 72.0 5.1 5.1 5.1 6.2 6.3 6.4 5.8       Bottom 11 25.4 25.4 8.1 8.1 27.8 27.7 74.1 73.8 5.2 5.2 5.2 5.9 6.1 3.9 3.8
        25.4 8.2 27.8 71.8 5.0 6.4 5.2       25.3 8.1 27.7 73.5 5.2 6.2 3.7
18-May-12 # - - - - Surface - - - - - - - - - - - - - - - - - - 18-May-12 Rainy Moderate 16:57 11 Surface 1 27.2 27.2 8.2 8.2 17.5 17.5 90.4 90.7 6.5 6.5 6.1 3.4 3.4 7.7 1.1 1.2 1.0
      - - - - - - -       27.2 8.2 17.6 91.0 6.6 3.4 1.2
      Middle - - - - - - - - - - - - - - -       Middle 6 27.0 27.0 8.2 8.2 20.3 19.6 80.9 79.6 5.8 5.7 8.5 8.6 1.2 1.1
      - - - - - - -       27.0 8.2 18.8 78.2 5.6 8.7 1.0
      Bottom - - - - - - - - - - - - - - - -       Bottom 10 26.5 26.5 8.2 8.2 23.4 23.5 76.2 76.3 5.4 5.4 5.4 11.2 11.2 0.8 0.8
        - - - - - - -         26.6 8.2 23.5 76.4 5.4 11.1 0.8
21-May-12 Sunny Moderate 14:08 11 Surface 1 27.4 27.4 8.2 8.2 21.6 21.6 90.0 90.1 6.3 6.3 6.3 2.6 2.6 3.2 3.1 3.5 3.0 21-May-12 Sunny Moderate 19:09 11 Surface 1 27.1 27.1 8.2 8.2 19.7 19.7 90.5 90.5 6.5 6.5 6.3 5.8 5.8 9.8 4.1 4.0 3.8
      27.4 8.2 21.6 90.2 6.3 2.5 3.8       27.1 8.2 19.8 90.4 6.5 5.7 3.8
      Middle 6 27.1 27.1 8.2 8.2 22.0 21.9 88.4 88.7 6.2 6.2 3.2 3.3 2.3 2.5       Middle 6 27.1 27.1 8.2 8.2 20.5 20.6 85.9 86.0 6.1 6.1 10.7 10.7 4.3 4.0
      27.1 8.2 21.9 88.9 6.3 3.4 2.6       27.1 8.2 20.7 86.0 6.1 10.7 3.7
      Bottom 10 27.0 27.0 8.2 8.2 22.6 22.7 88.1 88.0 6.2 6.2 6.2 3.6 3.6 3.3 3.0       Bottom 10 26.9 26.9 8.2 8.2 22.5 22.7 83.0 81.6 5.8 5.7 5.7 12.6 12.8 3.0 3.3
        26.9 8.2 22.7 87.8 6.2 3.5 2.7         26.8 8.2 22.8 80.1 5.6 12.9 3.6
23-May-12 Sunny Rough 13:07 12 Surface 1 26.8 26.8 8.2 8.2 22.5 22.5 87.9 87.4 6.2 6.2 6.1 4.4 4.3 7.0 4.8 4.2 3.7 23-May-12 Fine Moderate 08:32 11 Surface 1 26.4 26.4 8.1 8.1 20.6 20.5 88.0 87.9 6.3 6.3 6.1 5.7 5.7 9.8 5.4 5.6 4.7
      26.7 8.2 22.5 86.9 6.1 4.2 3.6       26.4 8.1 20.5 87.8 6.3 5.6 5.8
      Middle 6 26.7 26.7 8.2 8.2 22.6 22.8 85.4 84.1 6.0 5.9 8.5 8.4 3.2 3.4       Middle 6 26.5 26.5 8.1 8.1 22.2 22.1 82.2 81.8 5.8 5.8 11.1 10.9 4.1 3.7
      26.6 8.2 23.0 82.8 5.8 8.3 3.5       26.4 8.1 22.0 81.3 5.8 10.6 3.3
      Bottom 11 26.6 26.6 8.2 8.2 23.5 23.5 84.2 83.1 5.9 5.8 5.8 8.3 8.4 3.7 3.5       Bottom 10 26.3 26.4 8.1 8.1 24.9 24.8 80.8 80.1 5.7 5.6 5.6 12.6 12.7 4.6 4.9
      26.6 8.2 23.6 82.0 5.8 8.5 3.3         26.4 8.1 24.7 79.3 5.6 12.8 5.1
25-May-12 Sunny Moderate 14:22 12 Surface 1 27.4 27.5 8.1 8.1 23.2 23.1 86.2 92.5 6.0 6.4 6.3 2.4 2.4 2.7 5.3 4.2 3.2 25-May-12 Fine Moderate 09:19 12 Surface 1 27.0 27.1 8.1 8.1 20.5 20.5 100.0 93.8 7.1 6.7 6.4 1.6 1.7 2.7 2.8 3.1 3.0
      27.6 8.1 23.1 98.7 6.9 2.3 3.1       27.2 8.1 20.4 87.6 6.2 1.7 3.4
      Middle 6 27.5 27.5 8.1 8.1 23.1 23.2 92.2 89.2 6.4 6.2 2.2 2.3 3.4 2.9       Middle 6 26.8 26.9 8.1 8.1 23.9 23.5 84.5 86.6 5.9 6.1 1.7 1.8 2.6 3.1
      27.4 8.1 23.3 86.1 6.0 2.3 2.3       27.0 8.1 23.1 88.7 6.2 1.9 3.5
      Bottom 11 27.3 27.3 8.1 8.2 24.2 24.0 85.0 86.7 5.9 6.0 6.0 3.4 3.5 2.2 2.6       Bottom 11 26.7 26.7 8.1 8.1 25.2 25.2 83.2 81.4 5.8 5.7 5.7 4.6 4.5 3.4 2.8
        27.3 8.2 23.8 88.3 6.1 3.5 3.0         26.6 8.1 25.2 79.5 5.5 4.4 2.2
28-May-12 Fine Moderate 16:31 12 Surface 1 27.5 27.5 8.2 8.2 25.2 25.2 95.2 91.0 6.5 6.2 6.1 3.1 3.1 3.9 4.0 3.1 3.0 28-May-12 Fine Moderate 12:27 12 Surface 1 27.6 27.6 8.2 8.2 22.6 22.6 93.2 97.4 6.5 6.8 6.8 1.1 1.1 2.2 3.1 2.8 3.2
      27.5 8.2 25.2 86.8 6.0 3.0 2.1       27.7 8.2 22.5 101.6 7.1 1.1 2.5
      Middle 6 27.4 27.4 8.2 8.2 25.6 25.5 86.3 88.1 5.9 6.0 3.3 3.3 2.5 2.8       Middle 6 27.6 27.6 8.2 8.2 24.2 24.1 95.1 97.8 6.6 6.7 2.2 2.3 2.0 2.7
      27.4 8.2 25.4 89.9 6.2 3.3 3.1       27.6 8.2 24.1 100.4 6.9 2.3 3.4
      Bottom 11 27.3 27.3 8.2 8.2 26.1 26.1 84.0 85.2 5.8 5.8 5.8 5.4 5.3 3.9 3.2       Bottom 11 27.5 27.5 8.2 8.2 24.5 24.5 94.3 95.1 6.5 6.5 6.5 3.2 3.2 3.2 4.2
      27.3 8.2 26.0 86.3 5.9 5.1 2.5         27.5 8.2 24.5 95.8 6.6 3.1 5.2
30-May-12 Sunny Calm 09:51 11 Surface 1 27.3 27.3 8.2 8.2 20.9 20.8 91.3 91.5 6.4 6.5 6.3 4.9 5.1 9.6 2.8 3.2 3.5 30-May-12 Sunny Calm 13:20 12 Surface 1 28.1 28.0 8.2 8.2 20.7 20.8 96.2 96.4 6.7 6.7 6.4 4.1 4.2 4.8 3.0 2.6 2.6
      27.3 8.2 20.8 91.6 6.5 5.2 3.6       27.9 8.2 20.9 96.6 6.8 4.2 2.1
      Middle 6 27.1 27.2 8.2 8.2 23.7 23.7 87.9 87.8 6.1 6.1 10.9 10.8 3.5 4.1       Middle 6 27.2 27.2 8.2 8.2 23.5 23.5 89.3 88.1 6.2 6.1 4.8 4.8 2.1 2.1
      27.2 8.2 23.8 87.7 6.1 10.6 4.7       27.2 8.2 23.6 86.9 6.1 4.7 2.1
      Bottom 10 27.1 27.1 8.2 8.2 26.3 26.4 85.0 87.4 5.8 6.0 6.0 12.9 12.8 3.7 3.1       Bottom 11 27.1 27.1 8.2 8.2 27.1 27.2 87.2 86.0 6.0 5.9 5.9 5.1 5.3 2.4 3.1
        27.2 8.2 26.5 89.8 6.2 12.7 2.4         27.1 8.2 27.3 84.7 5.8 5.4 3.8
Remarks: Remarks:
Bolded values means the measured values exceed the Action Level; Underlined bolded values means the measured values exceed the Limit Level. Bolded values means the measured values exceed the Action Level; Underlined bolded values means the measured values exceed the Limit Level.
#  - Amber Rainstorm and Thunderstorm warnings were issued by HKO from 08:55 to 10:45 and 01:30 to 14:00 on 18 May 2012 respectively, with the consideration of safety concern, water quality monitoring  at Mid-Ebb session was cancelled.
Remarks:   Remarks:  
*     DA: Depth-Averaged *     DA: Depth-Averaged
**   Calm: Small or no wave; Moderate: Between calm and rough; Rough: White capped or rougher **   Calm: Small or no wave; Moderate: Between calm and rough; Rough: White capped or rougher
***  Cancelled due to Thunderstorm Warning and safety concern. ***  Cancelled due to Thunderstorm Warning and safety concern.