Avoid using heavy machinery for transport of construction material along narrow access road along the banks of the canal Avoid cutting of trees unless they obstruct construction of designed- structures. Express approval of Project Manager to be obtained before cutting and removal of any tree exceeding 300 mm girth. Temporary shifting & Community will lose the Interact and communicate with relevant Govt. Agencies, services for a short period Local Govt. Authorities and Employer to arrange for relocating of utility posts Disturbance to pedestrian relocation as early as possible and with minimum disturbance (electricity & telecom). to public. movement on the access road To erect barriers/ draw barricade tape to ensure security of and children playing on the public during removal/ relocation of utility posts. road Canal bank/bottom Excavation of banks and Silt and sediment quality in the canal should be established to bottom will generate a mixed excavation,, dewatering and understand the potential risk of contamination by heavy spoilage consisting of soil disposal of bottom sediments metals (and the leachability) and to determine the most from the banks, solid waste suitable disposal method for the excavated debris and and sediments from canal bed sediments. If contamination is established according to Stockpiling of such excavated accepted reference criteria, the following mitigation measures material may block surface are proposed to be implemented. (Note: drainage paths causing Sri Lanka does not localized flooding during have regulatory standards for sediment quality. Under construction period. MCUDP it was decided to use the ANZECC interim If not properly stored and standards for sediment quality) adequately covered washout of fine material may
Avoid using heavy machinery for transport of construction material along narrow access road along the banks of the canal Avoid cutting of trees unless they obstruct construction of designed- structures. Express approval of Project Manager to be obtained before cutting and removal of any tree exceeding 300 mm girth. Temporary shifting & relocating of utility posts (electricity & telecom). Community will lose the services for a short period Disturbance to pedestrian movement on the access road and children playing on the road Interact and communicate with relevant Govt. Agencies, Local Govt. Authorities and Employer to arrange for relocation as early as possible and with minimum disturbance to public. To erect barriers/ draw barricade tape to ensure security of public during removal/ relocation of utility posts. Canal bank/bottom excavation,, dewatering and disposal of bottom sediments Excavation of banks and bottom will generate a mixed spoilage consisting of soil from the banks, solid waste and sediments from canal bed Stockpiling of such excavated material may block surface drainage paths causing localized flooding during construction period. If not properly stored and adequately covered washout of fine material may Silt and sediment quality in the canal should be established to understand the potential risk of contamination by heavy metals (and the leachability) and to determine the most suitable disposal method for the excavated debris and sediments. If contamination is established according to accepted reference criteria, the following mitigation measures are proposed to be implemented. (Note: Sri Lanka does not have regulatory standards for sediment quality. Under MCUDP it was decided to use the ANZECC interim standards for sediment quality)
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