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 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 15 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 locations 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        One water samples was taken on 22nd December 2005 by CHEC at P1-SA1 Part 1. The water sample was subsequently tested by a HOKLAS accredited laboratory and the result showed that the water quality of water sample taken was well within the acceptable discharge limits. 

7.3.3        One water sample was taken on 24th January 2006 by CHEC at P1-SA1 Part 1 and the results of this sample will be reported in the next monthly report. The next water sampling is scheduled for February 2006 for whole site area. 

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        With effect from 6th February 2005, all inert C&D material had been disposed of at Tuen Mun Area 38 instead of Kai Tak Public Fill Barging Point (KTBP). The trip ticket system has been implemented effectively during the reporting period.

7.4.3        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 purpose.  A total of 1,680m3 of soft material were delivered from HY2002/26 to Phase 1 Contract since December 2005.

7.4.4        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)

1,070 no. of Trucks

Deliver to Public Fill Area (Tuen Mun Area 38)

6,420 m3

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

57.19 tones (SENT)

8.19 tones (WENT)

Collected by licensed collector for disposal to SENT and WENT landfills

65.38 tones

N/A

Chemical waste

N/A

Collected by licensed chemical waste collector

N/A

N/A

 

7.5              Site Audit / Inspection

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 Audit

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

i.              Rubbish / debris / sediment were accumulated in the u-channels and catchpit at P1-SA6 (Bus Depot), P1-SA1 Part 2. No treatment facilities for the u-channel adjacent to Pier SB38 & SB39 at P1-SA6 (Bus Depot).

Corrective and Preventive Actions – The u-channels and catchpit had been cleared immediately after the site inspection.  In addition, all temporary drainage and runoff control systems had been maintained properly on a weekly basis. For Pier SB38 and SB39, the slope formation had been completed and hydroseeding was carried out by CHEC by end of January 2006. Sandbags have been deployed in the u-channel as an interim measure.  Completed and closed. (Please refer to Appendix Q, Photo 1 to 5).

ii.            Oil stain on the ground at area P1-SA1 Part 1 was observed.

Corrective and Preventive Actions – The oil stain and contaminated soil had been cleared as chemical waste and was temporarily stored in the Chemical Waste Storage Area on site.  (Please refer to Appendix Q, Photo 6).  Completed and closed. 

iii.           Insufficient wheel facilities were provided at roundabout CP3/CP4 and mud track were observed on the public road. 

Corrective and Preventive Actions – Ramps and high pressure water jets have been provided at the site exits. Waste water generated from wheel washing water would be diverted back to the site area for soakaway.  In addition, all the existing gullies within the roundabout had been blocked.  (Please refer to Appendix Q, Photo 7 to 9).  Completed and closed.

iv.          For area P1-SA6 (STP), the enclosure for the debagging and mixing process of bagged cement was inadequate.

Corrective and Preventive Actions – Proper enclosure (sheltered on top and the 3 sides) has been provided for the debagging and cement mixing process.  Completed and closed.  (Please refer to Appendix Q, Photo 10). 

 

Independent Environmental Checker (IEC) Site Audit

7.5.3        The monthly IEC audit was carried out on 16th January 2006 and 3 observations were recorded which are presented below.

i.           Insufficient wheel washing facilities were provided at roundabout CP3/CP4 and mud trails were observed on the public road.  CHEC was urged to provide proper wheel washing and treatment facilities with petrol interceptor without further delay.

Corrective and Preventive Actions – Ramps and high pressure water jets have been provided at the site exits. Waste water generated from wheel washing water would be diverted back to the site area for soakaway.  In addition, all the existing gullies within the roundabout had been blocked.  (Please refer to Appendix Q, Photo 7 to 9. 

ii.          Inadequate enclosure was provided for the concrete debagging and mixing facility at P1-SA6 (STP).  CHEC was reminded to provide proper enclosure as soon as possible. 

Corrective and Preventive Actions – Proper enclosure has been provided for the debagging and cement mixing process.  (Please refer to Appendix Q, Photo 10).  Completed and closed.

iii.        No treatment facilities were provided for the u-channel adjacent to Pier SB 38 & 39 near P1-SA6 (Bus Depot).   CHEC was reminded to provide appropriate treatment facilities at the captioned area immediately. 

Corrective and Preventive Actions – Slope formation had been completed and hydroseeding was carried out by CHEC by end of January 2006. Sandbags have been deployed in the u-channel. (Please refer to Appendix Q Photo 4 to 5).  The situation will be monitored by ET continuously.

 

Environmental Protection Department (EPD) Site Inspection

7.5.4        No EPD site inspections were carried out during the reporting period.