7                    AUDIT RESULTS

7.1              Air Quality

7.1.1        For 1-hour TSP monitoring, a total of 45 sets of measurement were carried out at ASR1, ASR2 and ASR3 during the reporting period and the results of all measurements taken were below the A/L Levels. 

7.1.2        For 24-hour TSP monitoring, a total of 15 sets of measurement were carried out at ASR1, ASR2 and ASR3 during the reporting period and the results of all measurements taken were below the A/L Levels. 

7.2              Noise

7.2.1        A total of 15 sets of Leq(30min) measurement were taken in the daytime (i.e. 0700 to 1900 hours on normal weekdays) at three monitoring stations (NSR1, NSR2 and NSR3) during the reporting period and no exceedances were recorded.

7.2.2        A total of 15 sets of 6 x Leq(5min) measurements were taken in the evening-time (i.e. 1900 to 2300 hours) at all three monitoring stations during the reporting period and no exceedances were recorded.

7.2.3        A total of 5 set of 4 x Leq(5min) measurements were taken in the night-time (i.e. 2300 to 0700 next day) at the closest monitoring station, NSR 2, during the reporting period and no exceedances were recorded.

7.2.4        A total of 12 sets of 6 x Leq(5min) measurements were taken in public holidays (i.e. 0700 to 1900 hours during holidays) at all three monitoring stations and no exceedances were recorded.

7.3              Water Quality

7.3.1        A total of 3 Effluent Discharge Licenses were granted by EPD.  In accordance with the conditions of the licenses, water sampling at designated discharge points shall be carried out on a monthly basis for area P1-SA1 (Part 1) (Grid 1 to 9) and on a quarterly basis for areas P1-SA1 (Part 2) (Grid 10 to 27, Container Port Road E/B), P1-SA6, P1-SA8 and P1-SA11.

7.3.2        Three water samples were taken for P1-SA1 (Part 1, Grid 1 to 9) by CHEC on 30th August 2006.  The water samples were subsequently tested by a HOKLAS accredited laboratory and the results indicated that they have fully complied with the Specific Condition as stipulated in the approved license. In addition, pH and COD were also analyzed and the results also complied with the limits stipulated in the approved licenses.

7.3.3        Three water samples were taken for P1-SA1 (Part 1,Grid 1 to 9) by CHEC on 28th September 2006.  The results of the water samples will be reported in the next EM&A monthly report.  The next sampling is scheduled for October 2006 for the whole site.

7.4              Waste Management

7.4.1        Waste generated from the Phase 1 Contract included construction and demolition (C&D) materials and chemical waste. CHEC’s handling and disposal of waste has followed the recommended procedures stipulated in the Waste Management Plan (WMP) which was approved by EPD (EPD ref. (45) in EP2/N3/A/28 VII dated 10th September 2002).

7.4.2        A revised WMP (Rev. 17) was submitted to EPD for information on 11th May 2006 with the latest information including the most up to date estimation of inert C&D materials and non-inert C&D materials.

7.4.3        With effect from 6th February 2005, all inert C&D material had been disposed of at Tuen Mun Fill Bank. The trip ticket system has been implemented effectively during the reporting period.

7.4.4        On 7th December 2005, approval was granted by PFC, CEDD to import a maximum of 3,000m3 of soft material from “HY2002/26 – Stonecutters Bridge” for re-usage purposes.  A total of 2,004 m3 of soft material were delivered from HY2002/26 to Phase 1 Contract since December 2005.

7.4.5        Based on the information provided by CHEC with respect to relevant handling records and trip tickets of the Phase 1 Contract, the quantities of materials reused, recycled and disposed of are summarized in Table 7.1.

Table 7.1 Summary of Waste Disposal during the Reporting Period

Material Type

Quantity Produced in the reporting period

Handling Method

 

Handling Quantities in the reporting month

Temporary Storage Locations On-site

(if applicable)

C&D materials

 

(Public Fill)

 

537 no. of Trucks

 

Tuen Mun Fill Bank

(536 nos. of trucks to Tuen Mun Area 38 and 1 no. of truck to Tuen Mun Sorting facilities)

Approx. 2,416m3

 

N/A

(C&D

Waste)

N/A

To be recycled (paper)

N/A

P1-SA9

N/A

To be recycled (aluminum can)

N/A

P1-SA9

N/A

To be recycled (plastic bottle)

N/A

P1-SA9

N/A

To be reused

N/A

P1-SA6

N/A

To be returned to supplier

N/A

P1-SA6

98.91 tones (SENT)

Collected by licensed collector for disposal to SENT and WENT landfills

98.91 tones

N/A

Chemical waste

N/A

Collected by licensed chemical waste collector

N/A

P1-SA6

 

7.5              Site Audits / Inspections

7.5.1        Scheduled site audits were carried out by the ET and IEC on a regular basis in accordance with the EM&A Manual.  Sections below provide a detail summary of the findings identified during these audits and their corresponding implemented corrective and preventive measures.  Photographs of implemented measures are presented in Appendix Q.

 

Environmental Team Site Inspections

7.5.2        Weekly site inspections were conducted by the ET during the reporting period and the major findings are summarized as follows:

i.           Open stockpiles of dusty materials were observed at areas P1-SA1 (Part 1 and 2) and P1-SA6 (STP and Bus Depot). 

Corrective and Preventive Actions – All idled open stockpiles (not in operation) have been covered by impervious sheeting and the remaining stockpiles should be covered by impervious sheeting after operation or at the end of each working day.  Completed and closed.  (Please refer to Appendix Q, Photo 01 to 04).

ii.          Standing water and silt were accumulated in the sedimentation tank, catchpit and u-channels at area P1-SA6 (Bus Depot). 

Corrective and Preventive Actions - The temporary drainage system and treatment facilities had been cleared immediately after the site inspection.  Completed and closed. (Please refer Appendix Q Photo 05 & 06). 

iii.        Stagnant water was accumulated on uneven ground at P1-SA1 (Part 1, near segment storage area) and within steel formwork at area P1-SA1 (Part 2, near Kinko's container). 

Corrective and Preventive Actions - All stagnant water had been removed wherever possible.  Larvicidal oil / temephos have been applied to places where they were not easily accessable to reduce the risk of mosquito breeding.  Regular inspections have been carried out by CHEC to ensure proper anti-mosquito measures have been adopted on site. Completed and closed. (Please refer Appendix Q Photo 07 to 09).   

Independent Environmental Checker (IEC) Site Audit

7.5.3        The monthly IEC audit was carried out on 22nd September 2006, two general reminders were recorded and they are presented below. 

i.           Open stockpiles of dusty materials were observed at areas P1-SA1 (Part 1 and 2) and P1-SA6 (STP and Bus Depot). 

Corrective and Preventive Actions – All idled open stockpiles (not in operation) have been covered by impervious sheeting and the remaining stockpiles should be covered by impervious sheeting after operation or end of each working day.  Completed and closed.  (Please refer to Appendix Q, Photo 01 to 04).

ii.          Standing water and silt were accumulated in the sedimentation tank, catchpit and u-channels at area P1-SA6 (Bus Depot). 

Corrective and Preventive Actions - The temporary drainage system and treatment facilities had been cleared immediately after the site inspection.  Completed and closed. (Please refer Appendix Q Photo 05 & 06). 

Environmental Protection Department (EPD) Site Inspections

7.5.4        A joint site inspection was carried out with EPD on 5th September 2006.  It was noted that appropriate environmental mitigation measures have been implemented by CHEC on site and the performance of such environmental measures was satisfactory.  However, further improvements could be adopted to enhance the current site conditions as advised by the EPD and they are highlighted as follows:

i.           For area P1-SA1 (Part 2), all open stockpiles of dusty material shall be covered entirely by impervious sheeting or sprayed with sufficient water to maintain the entire surface moist. 

Corrective and Preventive Actions – All idled open stockpiles (not in operation) have been covered by impervious sheeting and the remaining stockpiles should be covered by impervious sheeting after operation or at the end of each working day.  (Please refer to Appendix Q, Photo 02).

ii.          All silt removal facilities, u-channels, catchpits and manholes shall be suitably maintained with the deposited silt and grit being removed at least once a week. 

Corrective and Preventive Actions – A1l temporary drainage has been maintained properly at least once a week, and at the onset of and after each rainstorm.  Completed and closed.  (Please refer to Appendix Q, Photo 05 & 06).

iii.        All C&D materials to be delivered off site to designated public filling area / landfills should strictly follow the contract specifications and appropriate Environmental Ordinances. 

Corrective and Preventive Actions – The trip ticket and chits systems have been implemented properly for the removal of C&D materials from site to  designated disposal locations.  The systems / situation will be monitored by CHEC, RSS and ET continuously.