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I <br /> CITY OF EVERETT SPECIAL PROVISIONS <br /> by the City, calculations, surveying, and measuring required for setting and maintaining <br /> the necessary lines and grades shall be the Contractors responsibility. The Contractor <br /> ' shall provide the City with copies of such calculations and staking data when requested <br /> by the Engineer. Copies of the City provided survey control data are available for the <br /> Bidders inspection at the office of the Project Engineer. <br /> Any staking requirements for the Project that do not fit field conditions will be reviewed <br /> and if necessary adjusted by the Engineer. Any necessary revisions to the staking <br /> information will be provided to the Contractor for use in completing the Work. <br /> Stakes, marks, and other reference points, including existing monumentation, set by the <br /> City shall be carefully preserved by the Contractor. The Contractor will be charged for <br /> the costs of replacing stakes, markers and monumentation that were not to be disturbed <br /> but were destroyed or damaged by the Contractors operations. This charge will be <br /> deducted from monies due or to become due to the Contractor. <br /> To facilitate the establishment of these lines and elevations, the City will provide the <br /> Contractor with the following survey control: <br /> ROADWAY, SURFACING AND PAVING <br /> Establish elevation bench marks and center or base line alignment control <br /> points for the mainline, one time only. Provide right of way stakes where <br /> applicable. <br /> Provide rights-of-way, easements or right-of-entry. <br /> Provide the Contractor with technical advice if requested. <br /> Computed grades where needed. <br /> Provide horizontal and vertical curve data. <br /> One copy of transit notes showing reference to horizontal and vertical control <br /> points. <br /> OTHER STRUCTURES <br /> Centerline or offset coordinates to centerline of the structure. <br /> A sufficient number of bench marks for levels to enable the Contractor to set <br /> grades at reasonably short distances. <br /> Monuments and control points as shown on the Plans. <br /> The Contractor shall give the City three weeks notification to allow adequate <br /> time to provide the above data. <br /> The Contractor shall ensure a surveying accuracy within the following tolerances: <br /> 1. Slope stakes ±0.1 foot <br /> 2. Subgrade blue tops ±0.01 foot <br /> 3. Stationing ±0.01 foot <br /> 4. Alignment ±0.01 foot <br /> 1 5. Surfacing red & yellow tops ±0.01 foot <br /> 6. Superstructure elevations ±0.01 foot (from plan elevations) <br /> 7. Substructure ±0.02 foot (from plan elevations) <br /> The Contractor shall slope stake the roadway before any construction may proceed. <br /> Slope stakes shall be set at 50 maximum intervals on tangents and 25' on curves. <br /> Subgrade bluetops and surfacing red and yellow tops shall be set at 50 intervals in <br /> tangent sections, 25 intervals in curve sections, and 10 intervals in intersection radii . <br /> The Contractors surveyor shall be a licensed surveyor in the State of Washington. The <br /> Contractor shall keep updated survey field notes in a standard field book and in a format <br /> set by the Engineer. These field notes shall include all survey work performed by the <br /> Watermain Replacement"U" Division 1 —GENERAL REQUIREMENTS October 1, 2019 <br /> WO No—UP3698 SP—63 <br />