Contract No. HY/2013/12 – Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works
AUES
6th Monthly Environmental Monitoring and Audit (EM&A) Report – April 2015 Contract No. HY/2013/12 – Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works
EVENT | ACTION | |||||
---|---|---|---|---|---|---|
ET(1) | IEC(1) | SOR(1) | Contractor(s) | |||
Action Level | ||||||
Exceedance | 1 Identify the source. | 1 | Check monitoring | 1 Confirm receipt | 1 Rectify any | |
recorded | 2 Repeat measurements to confirm findings. If two consecutive measurements exceed Action Level, the exceedance is then confirmed. 3 Inform the IEC and the SOR 4 Investigate the cause of exceedance and check Contractor’s working procedures to determine possible mitigation to be implemented. 5 If the exceedance is confirmed to be Project related after investigation, increase monitoring frequency to daily. 6 Discuss with the IEC and the Contractor on remedial actions required. 7 If exceedance continues, arrange meeting with the IEC and the SOR. 8 If exceedance stops, cease additional monitoring. | 2 3 4 5 | data submitted by the ET. Check the Contractor’s working method. If the exceedance is confirmed to be Project related after investigation, discuss with the ET and the Contractor on possible remedial measures. Advise the SOR on the effectiveness of the proposed remedial measures. Supervisor implementation of remedial measures. | of notification of failure in writing. 2 Notify the Contractor. 3 Ensure remedial measures properly implemented. | unacceptable practice. 2 Amend working methods if appropriate 3 If the exceedance is confirmed to be Project related, submit proposals for remedial actions to IEC within 3 working days of notification 4 Implement the agreed proposals 5 Amend proposal if appropriate. | |
Limit Level | ||||||
Exceedance | 1. Identify the source. | 1 | Check monitoring | 1. Confirm receipt of | 1 Take immediate | |
recorded | 2. Repeat measurement to confirm finding. If two consecutive measurements exceed Limit Level, the exceedance is then confirmed. 3. Inform the IEC, the SOR, the DEP and the Contractor. 4. Investigate the cause of exceedance and check Contractor’s working procedures to determine possible mitigation to be implemented. 5. If the exceedance is confirmed to be Project related after investigation, increase monitoring frequency to daily. 6. Carry out analysis of the Contractor’s working procedures to determine possible mitigation to be implemented. 7. Arrange meeting with the IEC and the SOR to discuss the remedial actions to be taken. 8. Assess effectiveness of the Contractor’s remedial actions and keep the IEC, the DEP and the SOR informed of the results. 9. If exceedance stops, cease additional monitoring. | 2 3 4 5 | data submitted by the ET. Check Contractor’s working method. If the exceedance is confirmed to be Project related after investigation, discuss with the ET and the Contractor on possible remedial measures. Advise the SOR on the effectiveness of the proposed remedial measures. Supervisor implementation of remedial measures. | notification of failure in writing. 2. Notify the Contractor. 3. If the exceedance is confirmed to be Project related after investigation, in consultation with the IEC, agree with the Contractor on the remedial measures to be implemented. 4. Ensure remedial measures are properly implemented. 5. If exceedance continues, consider what activity of the work is responsible and instruct the Contractor to stop that activity of work until the exceedance is abated. | action to avoid further exceedance. 2 If the exceedance is confirmed to be Project related after investigation, submit proposals for remedial actions to IEC within 3 working days of notification. 3 Implement the agreed proposals. 4 Amend proposal if appropriate. 5 Stop the relevant activity of works as determined by the SOR until the exceedance is abated. |
AUES
6th Monthly Environmental Monitoring and Audit (EM&A) Report – April 2015 Contract No. HY/2013/12 – Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works
EVENT ACTION LEVEL | ACTION | |||
---|---|---|---|---|
ET | IEC | ER | Contractor | |
Design Check | • Check final design conforms to the requirements of EP and prepare report. | • Check report. • Recommend remedial design if necessary | • Undertake remedial design if necessary | |
Non- conformity | • Identify Source | • Check report | • Notify Contractor | • Amend working |
on one occasion | • Inform IEC and ER • Discuss remedial actions with IEC, ER and Contractor • Monitor remedial actions until rectification has been completed | • Check Contractor's working method • Discuss with ET and Contractor on possible remedial measures • Advise ER on effectiveness of proposed remedial measures. • Check implementation of remedial measures | • Ensure remedial measures are properly implemented | methods • Rectify damage and undertake any necessary replacement |
Repeated Non- | • Identify Source | • Check monitoring | • Notify Contractor | • Amend working |
conformity | • Inform IEC and ER • Increase monitoring frequency • Discuss remedial actions with IEC, ER and Contractor • Monitor remedial actions until rectification has been completed • If nonconformity stops, cease additional monitoring | report • Check Contractor's working method • Discuss with ET and Contractor on possible remedial measures • Advise ER on effectiveness of proposed remedial measures • Supervise implementation of remedial measures | • Ensure remedial measures are properly implemented | methods • Rectify damage and undertake any necessary replacement |
AUES
6th Monthly Environmental Monitoring and Audit (EM&A) Report – April 2015
Action Level | ET | IC (E) | ER | Contractor |
---|---|---|---|---|
Non- conformity on | 1. Identify Source | 1. Check report | 1. Notify | 1. Amend working |
one occasion | 2. Inform the IEC and the ER 3. Discuss remedial actions with the IEC, the ER and the Contractor 4. Monitor remedial actions until rectification has been completed | 2. Check the Contractor's working method 3. Discuss with the ET and the Contractor on possible remedial measures 4. Advise the ER on effectiveness of proposed remedial measures. 5. Check implementation of remedial measures. | Contractor 2. Ensure remedial measures are properly implemented | methods 2. Rectify damage and undertake any necessary replacement |
Repeated Non- | 1. Identify Source | 1. Check monitoring | 1. Notify the | 1. Amend working |
conformity | 2. Inform the IC(E) and the ER 3. Increase monitoring frequency 4. Discuss remedial actions with the IC(E), the ER and the Contractor 5. Monitor remedial actions until 6. rectification has been completed 7. If exceedance stops, cease additional monitoring | report 2. Check the Contractor's working method 3. Discuss with the ES and the Contractor on possible remedial measures 4. Advise the ER on effectiveness of proposed remedial measures 5. Supervise implementation of remedial measures. | Contractor 2. Ensure remedial measures are properly implemented | methods 2. Rectify damage and undertake any necessary replacement |
Note:
ET – Environmental Specialist, IEC – Independent Environmental Checker, ER – Engineer’s Representative
Contract No. HY/2013/12 – Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works
AUES
6th Monthly Environmental Monitoring and Audit (EM&A) Report – April 2015
Action Level | ET | IEC | ER | Contractor |
---|---|---|---|---|
Non | • Identify Source | • Check report | • Notify Contractor | • Amend |
conformity | • Inform the IEC and | • Check the | • Ensure remedial | working |
on one | the ER | Contractor's working | measures are | methods |
occasion | • Discuss remedial actions with the IEC, the ER and the Contractor • Monitor remedial actions until rectification has been completed | method • Discuss with the ET and the Contractor on possible remedial measures • Advise the ER on effectiveness of proposed remedial measures. • Check implementation of remedial measures. | properly implemented • Consider and instruct, if necessary, the Contractor to slow down or to stop all or part of the works in the case of a serious nonconformity until situation rectified. | • Rectify damage and undertake any necessary replacement |
Repeated | • Identify Source | • Check monitoring | • Notify the | • Amend |
Non | • Inform the IC(E) and | report | Contractor | working |
conformity | the ER • Increase monitoring frequency • Discuss remedial actions with the • IC(E), the ER and the Contractor • Monitor remedial actions until rectification has been completed • If exceedance stops, cease additional monitoring | • Check the Contractor's working method • Discuss with the ES and the Contractor on possible remedial measures • Advise the ER on effectiveness of proposed remedial measures • Supervise implementation of remedial measures | • Ensure remedial measures are properly implemented • Consider and instruct, if necessary, the Contractor to slow down or to stop all or part of the works in the case of a serious nonconformity until situation rectified. | methods • Rectify damage and undertake any necessary replacement |
Note: ET – Environmental Specialist, IC(E) – Independent Checker (Environmental), ER – Engineer’s Representative
Contract No. HY/2013/12 – Tuen Mun - Chek Lap Kok Link - Northern Connection Toll Plaza and Associated Works
AUES
6th Monthly Environmental Monitoring and Audit (EM&A) Report – April 2015 Actions in the Event of Landfill Gas being Detected in Excavation / Confined Area
Parameter | Measurement | Action |
---|---|---|
Oxygen | < 19% | - Ventilate to restore oxygen to > 19% |
< 18% | - Stop work - Evacuate personnel / prohibit entry - Increase ventilation to restore to > 19% | |
Methane | > 10% LEL (> 0.5% v/v) | - Prohibit hot work - Ventilate to restore methane to < 10% LEL |
> 20% LEL (>1% v/v) | - Stop work - Evacuate personnel / prohibit entry - Increase ventilation to restore to < 10% | |
Carbon Dioxide | > 0.5% | - Ventilate to restore oxygen to < 0.5% |
> 1.5% | - Stop work - Evacuate personnel / prohibit entry - Increase ventilation to restore to < 0.5% |