Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 10: Roads, Landscaping and Fences  14 of 15 10.3.3 Existing trees  Inspection of Retained Trees  Tree Felling  Protection of Retained Trees  Maintenance of Retained Trees  Replacement of Damaged Trees  10.3.4 Implementation of landscaping  Preparation of Ground  Cultivation of Ground  Time for Planting  All trees and shrubs to be retained shall be inspected jointly by the Engineer and the Contractor at the  commencement of the Contract and a list of trees to be retained shall be agreed. Any tree found to be  diseased, dead, dying or unsafe shall be felled and uprooted subject to the prior approval of the Engineer.  Existing trees and shrubs where directed by the Engineer shall be cut down and all stumps and main  roots shall be grubbed up. All planting thus dealt with shall be either burnt in situ or removed from the  Site. The removed trees place should be transported to the place by the Employer.  During execution of works existing trees and shrubs that are to be retained shall be adequately protect- ed from all operations and from animals. Small trees and shrubs generally shall be surrounded by adequate temporary fencing to safeguard trunks and foliage. Large trees shall have suitable screening  round trunks, and low branches shall be protected by temporary fencing or barriers to prevent damage.  Construction materials shall not be stored close to or within the branch spread of any tree or shrub.  Existing ground levels shall be maintained.  Retained trees and shrubs shall be maintained during the Contract and pruned at completion having  due regard to the appropriate time of year for such work to be carried out. Maintenance shall include  removing snags, dead wood and fronds, sealing cavities and irrigating as required to ensure the continued health of existing planting.  Should any retained tree or shrub be damaged as a result of the building operations then it shall be replaced by the Contractor by an equivalent mature tree or shrub of the same variety.  The areas to be landscaped shall be brought to final ground levels less the depth required for top soil  or other surfacing and all surplus material shall be disposed of offsite. The Contractor shall relay 250 mm thick topsoil. Any deficiency in the topsoil shall be made up with  imported top soil. Prior to replacing topsoil areas of the Site which are to be prepared for grass planting shall be thoroughly broken up by deep raking and cross raking to a depth of 450 mm. Retained topsoil may be used as filled to final ground level subject to the approval of the Engineer being first obtained. Imported top soil shall be used if the existing top soil is insufficient or unsuitable.  Where new and replacement trees or shrubs are to be planted in agreement with the Engineer, holes 1  m deep below final ground level shall be excavated in each case. These shall be filled with sweet and  topped with 250 mm of top soil. Sand filling shall be thoroughly mixed with 10 kg manure before  placing.  In programming the planting work the Contractor shall take due regard of the accepted seasons for  planting. 10_Vol3_d4.3_Section 10 roads, landscaping and fences_en_GIR_rev6.docx 