Appendix H:

Table H-1: Event / Action Plan for Construction Noise

 EVENT

 ACTION

 

ET

IEC

ER

CONTRACTOR

Action Level

1. Notify IEC, ER and Contractor;

2. Carry out investigation;

3. Report the results of investigation to the IEC, ER and Contractor;

4. Discuss jointly with the Contractor and formulate remedial measures;

5. Increase monitoring frequency to check mitigation effectiveness.

1. Review the monitoring data submitted by the ET;

2. Review the construction methods and proposed remedial measures by the Contractor, and advise the ET and ER if the proposed remedial measures would be sufficient;

3. Supervise the implementation of remedial measures.

1. Confirm receipt of notification of failure in writing;

2. Notify the Contractor;

3. Require Contractor to propose remedial measures for the analysed noise problem;

4. Ensure remedial measures are properly implemented

1. Submit noise mitigation proposals to ER and copy to the IEC and ET;

2. Implement noise mitigation proposals.

Limit Level

1. Identify source;

2. Inform IEC, ER and Contractor;

3. Repeat measurements to confirm findings;

4. Increase the monitoring frequency;

5. Carry out analysis of Contractor’s working procedures with the ER and Contractor to determine possible mitigation to be implemented;

6. Inform IEC, ER and Contractor the causes and actions taken for the exceedances;

7. Assess effectiveness of Contractor’s remedial actions and keep IEC informed of the results;

8. If exceedance stops, cease additional monitoring.

1. Discuss amongst the ER, ET, and Contractor on the potential remedial actions;

2. Review the Contractor’s remedial actions whenever necessary to assure their effectiveness and advise the ER accordingly;

3. Supervise the implementation of remedial measures.

1. Confirm receipt of notification of exceedance in writing;

2. Notify the Contractor;

3. Require the Contractor to propose remedial measures for the analysed noise problem;

4. Ensure remedial measures are properly implemented;

5. If exceedance continues, consider what portion of the work is responsible and instruct the Contractor to stop that portion of work until the exceedance is abated.

1. Take immediate action to avoid further exceedance;

2. Submit proposals for remedial actions to the ER and copy to the ET and IEC  within 3 working days of notification;

3. Implement the agreed proposals;

4. Resubmit proposals if problems still not under control;

5. Stop the relevant portion of works as determined by the ER until the exceedance is abated.

Abbreviations: ET – Environmental Team, IEC – Independent Environmental Checker, ER – Engineer’s Representative

 

Table H-2: Actions in the event of LFG being detected

 Parameter

Monitoring Results

Actions

O2

<19% v/v

Increase underground ventilation to restore O2 to >19% v/v

<18% v/v

Stop works, evacuate all personnel, prohibit entry, and increase ventilation to restore O2 level to >19%

CH4

>10% LEL

Prohibit hot works, increase ventilation to restore CH4 to <10% LEL

>20% LEL

Stop works, evacuate all personnel, increase ventilation further to restore CH4 to <10% LEL

CO2

>0.5% v/v

Increase ventilation to restore C O2 to <0.5% v/v

>1.5% v/v

Stop works, evacuate all personnel, increase ventilation further to restore CO2 to <0.5%

Note: Depending on the results of the measurements, actions required will vary and should be set down by the Safety Officer or another appropriately qualified person. As a minimum these should encompass those actions specified in the above table.