Impact Water Quality Monitoring Results at IS17 - Mid-Ebb Tide Impact Water Quality Monitoring Results at IS17 - 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 09:58 11 Surface 1 26.8 26.8 8.2 8.2 10.5 10.7 105.7 103.9 8.0 7.8 7.6 1.2 1.2 1.6 2.8 2.6 2.6 2-May-12 Fine Moderate 15:42 12 Surface 1 27.2 27.2 8.3 8.3 13.7 13.6 104.3 103.1 7.7 7.6 7.7 1.9 1.9 2.4 2.6 2.4 2.5
      26.8 8.2 10.8 102.1 7.7 1.2 2.4       27.2 8.3 13.6 101.8 7.5 1.9 2.1
      Middle 6 25.0 25.2 8.1 8.1 22.2 22.1 97.3 100.0 7.1 7.3 1.5 1.5 3.2 2.8       Middle 6 25.8 25.8 8.2 8.2 20.0 19.5 107.1 107.1 7.8 7.8 2.1 2.2 3.6 2.9
      25.5 8.1 21.9 102.7 7.4 1.5 2.3       25.8 8.2 19.1 107.0 7.8 2.2 2.2
      Bottom 10 24.0 24.2 8.1 8.1 28.5 28.4 88.2 91.7 6.3 6.5 6.5 2.1 2.1 2.8 2.4       Bottom 11 24.9 24.7 8.1 8.1 23.3 25.1 95.2 93.8 6.9 6.8 6.8 3.2 3.2 2.5 2.3
        24.3 8.1 28.3 95.2 6.8 2.1 2.0         24.6 8.1 26.9 92.4 6.6 3.1 2.1
4-May-12 Sunny Moderate 11:15 11 Surface 1 26.9 27.0 8.2 8.2 15.3 15.3 93.8 93.7 6.9 6.9 6.7 1.8 1.9 2.8 2.6 2.7 2.7 4-May-12 Cloudy Moderate 18:16 12 Surface 1 27.5 27.5 8.3 8.3 14.1 14.2 97.1 97.0 7.1 7.1 6.8 3.0 3.0 5.3 2.5 2.7 3.2
      27.0 8.2 15.3 93.6 6.9 1.9 2.8       27.5 8.3 14.3 96.9 7.1 2.9 2.9
      Middle 6 25.6 25.5 8.1 8.1 20.9 20.9 87.5 87.5 6.4 6.4 2.1 2.2 3.0 2.6       Middle 6 25.3 25.4 8.2 8.2 21.4 21.4 88.3 88.1 6.4 6.4 5.9 5.8 3.2 4.0
      25.5 8.2 20.8 87.4 6.4 2.2 2.1       25.4 8.2 21.4 87.9 6.3 5.6 4.8
      Bottom 10 24.9 24.9 8.2 8.2 24.5 24.6 86.7 87.0 6.3 6.3 6.3 4.1 4.2 2.1 2.9       Bottom 11 25.0 25.0 8.2 8.2 24.4 24.4 86.7 86.8 6.2 6.2 6.2 6.9 7.0 3.3 2.9
        24.9 8.2 24.6 87.2 6.3 4.2 3.6         25.0 8.2 24.4 86.9 6.3 7.0 2.4
7-May-12 Sunny Moderate 13:55 11 Surface 1 26.8 26.8 8.2 8.2 16.7 16.7 89.7 89.1 6.5 6.5 6.3 3.1 3.2 4.8 3.0 2.8 4.7 7-May-12 Sunny Moderate 07:08 12 Surface 1 26.1 26.1 8.1 8.1 16.9 16.8 83.4 83.5 6.1 6.2 6.1 2.9 2.9 7.4 3.5 3.9 7.9
      26.7 8.2 16.8 88.5 6.5 3.2 2.5       26.1 8.1 16.8 83.6 6.2 2.8 4.3
      Middle 6 25.5 25.5 8.2 8.2 22.0 22.0 83.0 83.4 6.0 6.0 6.1 6.2 6.7 5.9       Middle 6 25.7 25.7 8.1 8.1 21.6 21.5 82.1 82.3 5.9 6.0 4.6 4.7 18.5 10.7
      25.5 8.2 22.0 83.7 6.0 6.3 5.1       25.7 8.1 21.5 82.5 6.0 4.7 2.9
      Bottom 10 25.1 25.1 8.2 8.2 24.8 24.8 84.7 84.8 6.1 6.1 6.1 4.8 4.9 5.1 5.5       Bottom 11 25.3 25.3 8.2 8.2 23.8 23.8 83.4 83.3 6.0 6.0 6.0 14.8 14.6 4.1 9.2
        25.1 8.2 24.9 84.8 6.1 4.9 5.9         25.3 8.2 23.8 83.2 6.0 14.4 14.3
9-May-12 Sunny Moderate 15:22 12 Surface 1 27.4 27.4 8.3 8.3 17.6 17.6 100.3 102.3 7.2 7.3 6.9 2.4 2.3 4.2 3.4 3.4 3.7 9-May-12 Sunny Moderate 08:27 12 Surface 1 27.0 27.0 8.0 8.1 15.5 15.7 84.9 84.9 6.2 6.2 6.2 1.1 1.2 2.1 4.2 3.9 3.6
      27.5 8.3 17.5 104.2 7.5 2.2 3.3       27.0 8.1 15.8 84.9 6.2 1.2 3.6
      Middle 6 26.3 26.4 8.2 8.2 19.7 19.7 91.0 90.1 6.6 6.5 4.7 4.6 3.6 3.8       Middle 6 26.8 26.8 8.1 8.1 17.9 17.8 85.3 85.0 6.2 6.2 1.5 1.6 3.9 4.3
      26.5 8.2 19.7 89.2 6.4 4.5 3.9       26.7 8.1 17.8 84.7 6.1 1.6 4.6
      Bottom 11 26.0 25.9 8.2 8.2 22.8 23.0 93.6 90.7 6.7 6.5 6.5 5.7 5.8 4.1 4.0       Bottom 11 25.8 25.8 8.2 8.2 23.2 23.3 83.2 84.7 5.9 6.1 6.1 3.5 3.6 3.0 2.7
      25.9 8.2 23.1 87.7 6.3 5.9 3.8         25.8 8.2 23.3 86.2 6.2 3.7 2.4
11-May-12 Sunny Moderate 16:19 11 Surface 1 27.8 27.8 8.5 8.5 18.5 18.5 134.3 134.3 9.5 9.5 8.2 2.0 2.0 2.5 1.8 1.9 1.4 11-May-12 Cloudy Moderate 10:10 11 Surface 1 27.6 27.6 8.3 8.3 16.1 16.1 106.4 106.8 7.7 7.7 7.4 2.1 2.0 2.5 1.0 1.3 1.6
      27.8 8.5 18.5 134.3 9.5 2.0 1.9       27.6 8.3 16.0 107.1 7.7 1.9 1.6
      Middle 6 26.2 26.2 8.3 8.3 23.8 23.9 96.2 95.8 6.8 6.8 1.8 1.9 1.7 1.7       Middle 6 26.6 26.7 8.3 8.3 21.8 21.0 98.4 98.4 7.0 7.0 1.8 1.8 1.0 1.1
      26.2 8.3 24.0 95.4 6.7 2.0 1.7       26.9 8.2 20.2 98.3 7.0 1.7 1.2
      Bottom 10 25.4 25.4 8.2 8.2 26.9 26.9 88.0 89.1 6.2 6.3 6.3 3.7 3.6 0.8 0.7       Bottom 10 25.4 25.4 8.2 8.2 26.8 26.8 92.0 90.8 6.5 6.4 6.4 3.8 3.8 2.4 2.4
        25.4 8.2 26.8 90.1 6.4 3.4 0.5         25.4 8.2 26.7 89.5 6.3 3.7 2.3
14-May-12 Sunny Moderate 09:29 11 Surface 1 27.7 27.7 8.5 8.5 15.0 15.3 122.0 120.7 8.8 8.7 7.5 2.0 2.1 2.1 4.0 4.3 3.7 14-May-12 Sunny Moderate 14:23 12 Surface 1 28.6 28.6 8.6 8.6 17.0 17.1 144.3 142.0 10.2 10.0 8.2 2.6 2.6 3.2 3.7 4.4 3.2
      27.6 8.5 15.6 119.4 8.6 2.1 4.6       28.5 8.6 17.1 139.6 9.8 2.5 5.1
      Middle 6 26.2 26.1 8.3 8.3 23.9 24.4 90.4 89.5 6.4 6.3 1.4 1.4 2.9 3.0       Middle 6 26.3 26.3 8.3 8.3 23.8 23.7 89.8 90.1 6.3 6.4 2.2 2.1 2.5 2.5
      26.0 8.3 24.8 88.5 6.3 1.3 3.0       26.3 8.3 23.5 90.4 6.4 1.9 2.5
      Bottom 10 25.2 25.2 8.2 8.2 27.8 27.9 78.5 78.1 5.5 5.5 5.5 2.8 2.9 2.9 3.9       Bottom 11 25.3 25.3 8.2 8.2 27.5 27.6 76.1 76.3 5.4 5.4 5.4 4.7 4.8 2.8 2.8
      25.1 8.2 27.9 77.6 5.5 3.0 4.8         25.2 8.2 27.7 76.4 5.4 4.8 2.8
16-May-12 Rainy Moderate 11:04 11 Surface 1 27.8 27.9 8.5 8.5 16.8 16.8 116.3 117.3 8.3 8.4 7.0 2.0 2.1 4.1 2.9 3.0 2.7 16-May-12 Cloudy Moderate 16:27 12 Surface 1 27.8 27.7 8.5 8.5 19.0 19.1 120.1 119.7 8.5 8.5 7.5 2.9 2.8 4.8 3.2 3.2 3.3
      28.0 8.5 16.8 118.3 8.4 2.2 3.0       27.7 8.5 19.2 119.3 8.4 2.7 3.2
      Middle 6 26.2 26.2 8.2 8.2 24.5 24.8 78.3 78.3 5.5 5.5 3.0 3.2 2.4 2.4       Middle 6 26.8 26.7 8.3 8.3 22.8 23.0 92.1 92.0 6.5 6.5 2.8 2.7 3.3 3.2
      26.1 8.2 25.0 78.2 5.5 3.4 2.4       26.6 8.3 23.3 91.8 6.5 2.5 3.0
      Bottom 10 25.3 25.3 8.2 8.2 29.1 29.0 77.8 76.1 5.4 5.3 5.3 6.8 7.0 2.5 2.6       Bottom 11 25.5 25.5 8.2 8.2 28.2 28.3 79.1 78.1 5.5 5.4 5.4 9.1 8.8 4.2 3.6
        25.3 8.2 29.0 74.3 5.2 7.2 2.7       25.5 8.2 28.3 77.1 5.4 8.5 2.9
18-May-12 # - - - - Surface - - - - - - - - - - - - - - - - - - 18-May-12 Rainy Moderate 17:50 11 Surface 1 27.1 27.0 8.3 8.3 19.3 19.3 86.1 94.6 6.2 6.8 6.5 1.6 1.6 3.3 0.6 0.8 2.1
      - - - - - - -       26.9 8.3 19.4 103.0 7.4 1.6 0.9
      Middle - - - - - - - - - - - - - - -       Middle 6 26.6 26.8 8.2 8.2 23.6 23.3 83.6 88.5 5.9 6.2 1.6 1.6 1.8 1.6
      - - - - - - -       26.9 8.2 23.0 93.4 6.6 1.5 1.4
      Bottom - - - - - - - - - - - - - - - -       Bottom 10 26.1 26.3 8.2 8.2 26.1 26.1 78.0 78.8 5.5 5.5 5.5 6.9 6.8 4.1 3.8
        - - - - - - -         26.4 8.2 26.1 79.6 5.5 6.7 3.4
21-May-12 Sunny Moderate 12:51 12 Surface 1 26.9 26.9 8.2 8.2 23.4 23.3 79.8 78.6 5.6 5.5 5.2 2.6 2.8 6.3 3.2 3.8 4.5 21-May-12 Sunny Moderate 19:59 12 Surface 1 26.9 26.9 8.2 8.2 21.6 21.6 77.5 77.7 5.5 5.5 5.3 4.1 4.1 6.9 4.5 3.7 4.1
      26.9 8.2 23.3 77.4 5.4 2.9 4.4       26.9 8.2 21.6 77.8 5.5 4.0 2.9
      Middle 6 26.3 26.3 8.2 8.2 24.8 24.3 69.4 68.9 4.9 4.8 7.5 7.5 4.1 3.5       Middle 6 26.5 26.5 8.2 8.2 24.6 24.6 71.8 72.3 5.0 5.1 7.2 7.2 4.0 4.7
      26.4 8.2 23.9 68.3 4.8 7.5 2.8       26.5 8.2 24.6 72.7 5.1 7.1 5.4
      Bottom 11 26.0 26.0 8.2 8.2 26.5 26.4 64.3 64.4 4.5 4.5 4.5 8.8 8.7 7.3 6.1       Bottom 11 26.4 26.4 8.2 8.2 24.9 24.9 73.1 74.1 5.1 5.2 5.2 9.3 9.3 2.9 3.8
        26.0 8.2 26.4 64.5 4.5 8.6 4.9         26.4 8.2 24.9 75.0 5.3 9.2 4.7
23-May-12 Sunny Rough 14:02 11 Surface 1 26.8 26.8 8.2 8.2 23.2 23.2 87.4 89.2 6.1 6.3 5.9 2.7 2.7 6.0 2.4 3.4 4.4 23-May-12 Fine Moderate 07:04 11 Surface 1 26.4 26.4 8.2 8.2 21.1 21.1 92.7 89.4 6.6 6.4 6.1 2.4 2.2 5.9 5.2 4.9 3.8
      26.8 8.2 23.2 91.0 6.4 2.7 4.3       26.4 8.2 21.0 86.0 6.2 2.0 4.5
      Middle 6 26.5 26.5 8.2 8.2 24.5 24.7 77.7 78.1 5.5 5.5 5.1 5.2 4.9 4.9       Middle 6 26.6 26.6 8.2 8.2 23.6 23.8 81.2 81.7 5.7 5.7 2.5 2.6 3.1 3.2
      26.5 8.2 24.9 78.4 5.5 5.2 4.9       26.6 8.2 24.1 82.2 5.8 2.7 3.3
      Bottom 10 26.3 26.3 8.2 8.2 25.8 25.8 74.7 74.3 5.2 5.2 5.2 10.1 10.1 3.9 4.9       Bottom 10 26.2 26.2 8.2 8.2 25.8 25.7 74.0 74.0 5.2 5.2 5.2 12.8 12.9 2.6 3.4
      26.3 8.2 25.8 73.8 5.2 10.0 5.9         26.2 8.2 25.7 74.0 5.2 12.9 4.1
25-May-12 Sunny Moderate 15:06 11 Surface 1 27.9 27.9 8.2 8.2 22.3 22.3 92.2 93.6 6.4 6.5 6.1 1.6 1.6 4.3 0.7 0.6 1.2 25-May-12 Fine Moderate 08:21 11 Surface 1 27.2 27.3 8.1 8.1 19.5 19.0 88.4 89.1 6.3 6.3 6.0 1.6 1.6 4.0 3.4 3.1 3.3
      27.9 8.1 22.3 94.9 6.6 1.5 <0.5       27.4 8.1 18.4 89.7 6.3 1.6 2.7
      Middle 6 27.0 27.0 8.2 8.2 24.4 24.5 81.8 81.9 5.7 5.7 5.6 5.7 0.6 0.7       Middle 6 26.8 26.8 8.1 8.2 24.2 24.3 80.2 79.9 5.6 5.6 1.9 2.0 4.2 4.1
      26.9 8.2 24.5 81.9 5.7 5.8 0.8       26.8 8.2 24.4 79.5 5.5 2.0 4.0
      Bottom 10 26.5 26.5 8.2 8.2 26.2 26.2 77.0 76.8 5.3 5.3 5.3 5.5 5.6 2.2 2.3       Bottom 10 26.5 26.5 8.2 8.2 26.3 26.3 73.7 73.7 5.1 5.1 5.1 8.2 8.3 2.0 2.8
        26.5 8.2 26.3 76.6 5.3 5.7 2.4         26.5 8.1 26.3 73.6 5.1 8.4 3.5
28-May-12 Fine Moderate 17:36 11 Surface 1 27.6 27.6 8.3 8.3 24.2 24.2 102.3 100.6 7.0 6.9 6.4 1.1 1.1 2.4 2.6 3.2 3.3 28-May-12 Fine Moderate 10:46 11 Surface 1 27.7 27.7 8.2 8.2 22.8 22.6 95.0 94.2 6.6 6.5 6.2 0.9 1.0 1.3 3.1 2.7 2.4
      27.6 8.3 24.2 98.9 6.8 1.0 3.8       27.7 8.2 22.4 93.4 6.5 1.0 2.3
      Middle 6 27.3 27.3 8.2 8.2 26.0 26.1 86.9 85.5 6.0 5.9 2.2 2.4 2.8 3.4       Middle 6 27.3 27.3 8.2 8.2 25.6 25.6 86.4 85.7 5.9 5.9 1.0 1.1 1.9 1.8
      27.3 8.2 26.3 84.0 5.8 2.5 3.9       27.3 8.2 25.7 85.0 5.8 1.1 1.7
      Bottom 10 27.1 27.1 8.2 8.2 27.7 27.7 81.0 80.0 5.5 5.5 5.5 3.7 3.8 3.6 3.4       Bottom 10 27.2 27.2 8.2 8.2 26.3 26.3 80.6 80.9 5.5 5.5 5.5 1.7 1.7 2.8 2.7
      27.0 8.2 27.7 79.0 5.4 3.8 3.2         27.2 8.2 26.3 81.1 5.6 1.6 2.6
30-May-12 Sunny Calm 08:42 12 Surface 1 27.2 27.1 8.2 8.2 23.0 22.7 91.5 89.3 6.4 6.2 6.0 2.4 2.5 3.4 3.1 2.7 3.7 30-May-12 Sunny Calm 14:01 12 Surface 1 27.8 27.9 8.3 8.3 23.7 23.8 91.3 93.5 6.3 6.4 6.1 2.5 2.6 5.1 2.7 2.8 3.1
      27.1 8.2 22.4 87.0 6.1 2.6 2.3       27.9 8.3 24.0 95.6 6.6 2.6 2.9
      Middle 6 27.1 27.1 8.2 8.2 27.5 27.6 83.9 83.4 5.7 5.7 3.3 3.4 3.3 3.9       Middle 6 27.1 27.2 8.3 8.3 27.3 27.2 84.6 85.2 5.8 5.8 5.6 5.5 2.8 2.9
      27.1 8.2 27.6 82.9 5.7 3.4 4.4       27.2 8.3 27.0 85.8 5.9 5.4 3.0
      Bottom 11 27.1 27.1 8.2 8.3 28.5 28.5 87.0 85.2 5.9 5.8 5.8 4.1 4.2 3.9 4.5       Bottom 11 27.1 27.1 8.2 8.2 28.2 28.2 86.6 87.0 5.9 5.9 5.9 7.1 7.2 3.6 3.7
        27.1 8.3 28.6 83.4 5.7 4.2 5.0         27.1 8.2 28.3 87.4 5.9 7.2 3.7
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.