7                    AUDIT RESULTS

7.1              Air Quality

7.1.1        For 1-hour TSP monitoring, a total of 54 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 18 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 12 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 9 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 9 sets of 4 x Leq(5min) measurements were taken in the night-time (i.e. 2300 to 0700 next day) at all three monitoring stations during the reporting period and no exceedances were recorded.

7.2.4        A total of 9 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        5 water samples (3 at P1-SA1 (Part 1), 1 at P1-SA1 (Part 2) and 1 at P1-SA6) were taken on 30th May 2006 by CHEC.  The water samples were subsequently tested by a HOKLAS accredited laboratory and the results will be reported in the next EM&A monthly report.  The next water sampling is scheduled in June for area P1-SA1 (Part 1).

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 CEDD to import a maximum of 3,000m3 of soft material from “HY2002/26 – Stonecutters Bridge” for re-usage purposes.  A total of 2,004m3 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)

522 no. of Trucks

Tuen Mun Fill Bank

(Tuen Mun Area 38)

3,132m3

 

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

116.51 tones (SENT)

Collected by licensed collector for disposal to SENT and WENT landfills

116.51 tones

N/A

Chemical waste

N/A

Collected by licensed chemical waste collector

N/A

N/A

 

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.              CHEC was reminded to cover all open stockpiles entirely by impervious sheeting after operation and / or end of each working day. 

Corrective and Preventive Actions – For open stockpiling areas at P1-SA1 (Part 1), P1-SA1 (Part 2) and P1-SA6 (Bus Depot), all open stockpiles had been protected by hydroseeding.  The remaining open stockpiles / soil heaps on site have been covered by impervious sheeting properly after operation and / or end of each working day.  Completed and closed. (Please refer to Appendix Q, Photo 1 to 4).

ii.            CHEC was reminded to maintain all silt removal facilities, channels and manholes with the deposited silt and grit being removed at least once a week, and at the onset of and after each rainstorm. 

Corrective and Preventive Actions - All temporary drainage and runoff control systems would be maintained properly on a weekly basis, and at the onset of and after each rainstorm.  Completed and closed. (Please refer to Appendix Q, Photo 5 to 8).  

Independent Environmental Checker (IEC) Site Audit

7.5.3        The monthly IEC audit was carried out on 19th May 2006. No non-compliances (NCs) or observations were recorded by IEC during the audit.  IEC was in general satisfied from the audit the environmental mitigation works that CHEC has carried out on site. 

           

Environmental Protection Department (EPD) Site Inspections

7.5.4        EPD site inspection was carried out on 16th May 2006.  EPD noted that appropriate environmental mitigation measures have been implemented by CHEC on site and the performance of such environmental measures was satisfactory.  However, CHEC was reminded to further enhance the coverage and the frequency of water spraying to ensure that the dust emission from the construction site would be kept to its minimum, in particular P1-SA1.  Appropriate mitigation measures have been carried out by CHEC to further improve the site situation.   (Please refer to Appendix Q, Photo 9).