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22 . BACKFILLING WELL POINT- HOLES — N/A 23 , OTHER CONTRACTORS - Where the work of other trades is simultaneously pursued with this contract , the procedure of the work shall be cooperative so as to permit continuous operation by each Contractor to his fullest capacity . 24 . PROJECT COORDINATION : Testing / Inspections/Completion Reports -The Contractor shall be responsible for the construction progress , including the coordination and scheduling of all required tests and inspections ( as specified in the plans , contract documents and permit conditions ) . The appropriate inspectors from the various regulatory agencies , and the engineer, shall be notified at least 24 hours prior to any required testing and inspections . 25 . Survey : A . Construction Stake - out by Contractor : The Contractor shall layout and survey the proposed construction lines and set grade stakes as required . Survey control points shall be set and/or referenced from a sketch of the boundary survey of the project site provided by the owner . Where any questions as to location , alignment or grade of the proposed construction , the Contractor shall report his findings to the Engineer for any decisions that must be made with regards to location or grade . The Contractor shall make all necessary computations to establish the exact position of all the work from the control point ( s ) which are shown on the plans or the sketch of the survey provided by the owner . All work shall be referenced to base lines which the Contractor shall establish from the control points , re -establish when necessary and maintain throughout the life of the Contract so as to permit the Engineer to make necessary preliminary , interim , and final measurements and to check the Contractor' s layout if he so desires . The Contractor shall provide and maintain offset stakes outside the limits of grading and construction . Each stake shall be identified and marked to show the offset distance from the Base Line and the Contractor shall furnish grade sheets showing the cut or fill to the finished profile lines with reference to the offset stakes . The Contractor shall be responsible for maintaining the points he has established . Any error or apparent discrepancies found in the Plans or Specifications shall be called to the Engineer' s attention for interpretation prior to proceeding with the work . The cost to the Contract of the laying out the work from lines and grades furnished in the plans by the Engineer and the cost of stakes set by the Contractor, shall be included in the price bid for the various items scheduled in the Proposal , unless a separate pay item has been included by the Engineer . B . AS - BUILT DRAWINGS - Subsequent to the completion of the contract work , but prior to submission of the request for final payment , the Contractor will prepare in duplicate "As Built" drawings of the contract work showing the final location by centerline stationing and state plan coordinates all pavement drainage and utility construction , depict any changes in the contract plans including horizontal location and vertical elevation of all elevated walkways . SP-4