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Appendix
B |
Amount of Dredged
and Dumped Marine Sediment |
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Date |
Dredged Marine Mud |
Dumped Marine Mud |
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(bulk volume m3) |
(bulk volume m3) |
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1/9/2001 |
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22,202 |
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22,202 |
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2/9/2001 |
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24,378 |
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24,378 |
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3/9/2001 |
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24,616 |
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24,616 |
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4/9/2001 |
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22,202 |
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22,202 |
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5/9/2001 |
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18,564 |
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18,564 |
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6/9/2001 |
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16,864 |
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16,864 |
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7/9/2001 |
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20,026 |
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20,026 |
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8/9/2001 |
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25,364 |
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25,364 |
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9/9/2001 |
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25,976 |
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25,976 |
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10/9/2001 |
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21,964 |
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21,964 |
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11/9/2001 |
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20,876 |
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20,876 |
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12/9/2001 |
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14,688 |
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14,688 |
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13/9/2001 |
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24,038 |
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24,038 |
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14/9/2001 |
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18,326 |
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18,326 |
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15/9/2001 |
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16,388 |
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16,388 |
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16/9/2001 |
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19,414 |
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19,414 |
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17/9/2001 |
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13,226 |
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13,226 |
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18/9/2001 |
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7,514 |
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7,514 |
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19/9/2001 |
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4,964 |
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4,964 |
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20/9/2001 |
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8,364 |
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8,364 |
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21/9/2001 |
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2,788 |
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2,788 |
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22/9/2001 |
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7,990 |
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7,990 |
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23/9/2001 |
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16,014 |
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16,014 |
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24/9/2001 |
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16,864 |
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16,864 |
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25/9/2001 |
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15,640 |
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15,640 |
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26/9/2001 |
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17,578 |
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17,578 |
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27/9/2001 |
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19,516 |
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19,516 |
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28/9/2001 |
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22,440 |
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22,440 |
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29/9/2001 |
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13,940 |
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13,940 |
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30/9/2001 |
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18,428 |
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18,428 |
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Summary of
Dredging Rate during this period |
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| 1. |
Condition no .3.3
of the varied Environmental Permit (EP-071/2000/B) |
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| 1.1 |
During the ebb
tide, the maximum allowable dredging rate is 52,667 m3 per day. |
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| 1.2 |
During the flood
tide, the maximum allowable dredging rate is 40,667 m3 per day. |
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| 2. |
Checking Actual
Dredging Rates Against EP requirements |
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| 2.1 |
It
is difficult to differentiate the dredging volumes during ebb and flood tides
in a day. Hence to facilitate
checking the EP conditions, it is assumed that the whole operation day falls
on flood tides and ebb tides.
The largest bulked volume of dredged marine muds in the reporting
month is converted to the in-situ volume, which is then checked against the
EP conditions. This approach has
been acceptable by EPD. |
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| 2.2 |
During the
reporting month, the largest quantity of dredged marine mud is 25,976 m3 (bulked volume)
on 9th
September 2001. Hence, the
volume of dredged mud equals to (25,976/ 1.3) = 19,982 m3 (in in-situ
volume) where 1.3 is a bulking factor.
This figure, 19,982 m3, is lower than
both allowable rates summarised in item 1 above. Hence, it can be concluded that the contractor complied
with the condition stipulated in the EP regarding the dredging rate. |
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