10. Cultural Heritage

10.1 Introduction

10.2 Construction Phase Protective Measures

10.3 Operation Phase Protective Measures

10.4 Construction Phase EM&A Requirements

10.5 Operation Phase EM&A Requirements

10.6 Implementation Schedule

List of Appendices

Appendix 1 Implementation Schedule of Recommended Mitigation Measures

List of Figures

Figure 10.1 Graded Historic buildings within Lin Fa Tei Area

Figure 10.2 Graded Historic buildings within Ha Che Area

Figure 10.3 Graded Historic buildings within Tai Wo Area

10. Cultural Heritage

10.1 Introduction

10.1.1 Protective measures have been recommended in the EIA report for the protection, and secure and safe public access of three indirectly affected built heritage sites by the Project during the construction phase. No further action during the operational phase is required.

10.1.2 Based on desk-based research and strengthened by field visits, the Study Areas with exception of the area near the previous findings of wooden remains and other undisturbed areas within Lin Fa Tei Site of Archaeological Interest (SAI) outside the proposed works boundary in the Lin Fa Tei Study Area, are deemed to have minimal or limited archaeological potential. The proposed drainage works are not expected to have impact on archaeology during construction and operational phases with the exception of an area within Lin Fa Tei SAI near the previous findings of wooden remains.

10.2 Construction Phase Protective Measures

Archaeology

10.2.1 According to the assessment the proposed drainage works in the Lin Fa Tei area are located immediately adjacent to existing river course on mainly Pleistocene terraced alluvium and at its western end occupies Holocene alluvium. The proposed works are partially located within Lin Fa Tei Site of Archaeological Interest (SAI). Previous investigations within SAI have shown both in situ and secondary deposit and with potential for wooden features near the stream bed. It is therefore, recommended to conduct an Archaeological Survey prior to the construction works within the area marked on Figure 10.16 of the EIA report.

10.2.2 A qualified archaeologist shall be engaged and apply for a licence under the Antiquities and Monuments Ordinance (Cap. 53) to conduct the Archaeological Survey prior to the construction phase. The scope and methodology of the Archaeological Survey should be agreed with AMO prior to implementation. Tentatively and subject to agreement with AMO, a fieldscan, where possible, twenty auger tests and four 5 by 1m narrow trenches are proposed to further assess the archaeological potential of the area. If significant remains are uncovered, AMO should be notified and potential need for mitigation and/or an appropriate way forward should be agreed by AMO and relevant parties.

10.2.3 While the remaining drainage work areas (outside the area identified for Archaeological Survey) are deemed to have limited (near Kam Sheung Road) to minimal (remainder of Works Areas) archaeological potential, it is recommend that in case of discovery of antiquities or supposed antiquities during course of construction works for the proposed drainage improvement works AMO be informed immediately to ascertain if follow remedial works are required.

Built Heritage

10.2.4 All the proposed mitigation measures to be implemented during the construction phase for graded historic buildings are presented in table below.

Table 10.1 Mitigation Recommendations for Impacted Graded Historic Buildings

Resource	Mitigation Recommendation
GB-01 Lee Tat Bridge, Shui Tsan Tin Grade 3 (Figure 10.1) Located at distance of 13.3m from works boundary.	· A condition survey will be carried out in advance of works and after completion of works by qualified building surveyor or structural engineer. The Condition Survey Report should contain descriptions of the structure, identification of fragile elements, an appraisal of the condition and working methods for any proposed monitoring and precautionary measures that are or were recommended with aid of photo records. The condition survey report must be submitted to AMO for comment before construction activities commence and after the works have been completed. The contractor should implement the approved monitoring and precautionary measures; · Vibration, settlement and tilting monitoring should be undertaken during the construction works to ensure that safe levels of vibration are not exceeded. An Alert, Alarm and Action (AAA) vibration limit set at 5 / 6 / 7.5 mm/s for Grade 3 historic buildings, settlement limit set at 6/8/10mm, and tilting limit set at 1/2000; 1/1500; 1/1000 should be adopted. Monitoring proposal, including checkpoint locations, installation details, response actions for each of the AAA levels and frequency of monitoring should be submitted for AMO's consideration. Installation of monitoring checkpoints shall be carried out in great care and adequate protection shall be provided so as to avoid unnecessary disturbance / damage to the historic fabrics. Photo records of monitoring checkpoints shall be submitted upon installation for AMO's records. Monitoring records should be submitted to AMO on regular basis and alert AMO should the monitoring reach AAA levels.
GB-02 Lan Fong Study Hall, Chuk Hang Grade 3 (Figure 10.2) Located at distance of 57.7m from works boundary.	· A condition survey will be carried out in advance of works and after completion of works by qualified building surveyor or structural engineer. The Condition Survey Report should contain descriptions of the structure, identification of fragile elements, an appraisal of the condition and working methods for any proposed monitoring and precautionary measures that are or were recommended with aid of photo records. The condition survey report must be submitted to AMO for comment before construction activities commence and after the works have been completed. The contractor should implement the approved monitoring and precautionary measures; · Vibration, settlement and tilting monitoring should be undertaken during the construction works to ensure that safe levels of vibration are not exceeded. An Alert, Alarm and Action (AAA) vibration limit set at 5 / 6 / 7.5 mm/s for Grade 3 historic buildings, settlement limit set at 6/8/10mm, and tilting limit set at 1/2000; 1/1500; 1/1000 should be adopted. Monitoring proposal, including checkpoint locations, installation details, response actions for each of the AAA levels and frequency of monitoring should be submitted for AMO's consideration. Installation of monitoring checkpoints shall be carried out in great care and adequate protection shall be provided so as to avoid unnecessary disturbance / damage to the historic fabrics. Photo records of monitoring checkpoints shall be submitted upon installation for AMO's records. Monitoring records should be submitted to AMO on regular basis and alert AMO should the monitoring reach AAA levels.
GB-03 St John’s Chapel, Cheung Po Grade 2 (Figure 10.3) Located at distance of 46.4m from works boundary.	· A condition survey will be carried out in advance of works and after completion of works by qualified building surveyor or structural engineer. The Condition Survey Report should contain descriptions of the structure, identification of fragile elements, an appraisal of the condition and working methods for any proposed monitoring and precautionary measures that are or were recommended with aid of photo records. The condition survey report must be submitted to AMO for comment before construction activities commence and after the works have been completed. The contractor should implement the approved monitoring and precautionary measures; · Vibration, settlement and tilting monitoring should be undertaken during the construction works to ensure that safe levels of vibration are not exceeded. An Alert, Alarm and Action (AAA) vibration limit set at 5 / 6 / 7.5 mm/s for Grade 2 historic buildings, settlement limit set at 6/8/10mm, and tilting limit set at 1/2000; 1/1500; 1/1000 should be adopted. Monitoring proposal, including checkpoint locations, installation details, response actions for each of the AAA levels and frequency of monitoring should be submitted for AMO's consideration. Installation of monitoring checkpoints shall be carried out in great care and adequate protection shall be provided so as to avoid unnecessary disturbance / damage to the historic fabrics. Photo records of monitoring checkpoints shall be submitted upon installation for AMO's records. Monitoring records should be submitted to AMO on regular basis and alert AMO should the monitoring reach AAA levels.

10.3 Operation Phase Protective Measures

10.3.1 The operation of the flooding control measures will not impose any additional adverse impacts on archaeology or built heritage. No mitigation measures will be required regarding this issue.

10.4 Construction Phase EM&A Requirements

10.4.1 Monitoring records should be submitted to AMO on regular basis and alert AMO should the monitoring reach AAA levels.

10.5 Operation Phase EM&A Requirements

10.5.1 There are no Cultural Heritage requirements for EM&A during the operational phase.

10.6 Implementation Schedule

10.6.1 The Contractor shall be responsible for the design and implementation of the mitigation measures as recommended in Appendix 1, Table A1-8.