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0 <br />1 2. Resurvey of reworked grid areas as necessary. <br />b. LFG gas trenches <br />c. Geomembrane cover limit <br />d. Ditch alignment and grades <br />Some record drawings may be combined with prior authorization from Engineer. <br />Drawings shall be F=50' scale and shall be in AutoCAD version 2010 format. <br />Drawings are to be produced in electronic format, on CD disk with hard prints on <br />bond. The hard copy set shall be sealed by the Surveyor. <br />4. A letter certifying that the earthwork layers are within specified grading <br />tolerances and meet or exceed specified thickness shall be prepared, sealed by <br />the Surveyor, and accompany the record survey drawing submittal. <br />E. Record Survey Drawing Preparation <br />1. The County will provide existing Construction Drawings to the contractor in <br />AutoCAD version 2010 format. <br />2. The contractor will submit drawing edits made to the Construction Drawings <br />for the as -built drawings to the County. <br />i <br />3. Prepare record drawings for each layer surveyed with grid point number design <br />elevation and record elevation for each point -on -point grid coordinate location. <br />Sheets subsequent to the prepared subgrade shall contain in tabular format the <br />prepared subgrade record elevation (or other layer record elevation), then final <br />cover and earthfill designs and record elevations and actual thicknesses. The <br />LFG pipe trenches and geomembrane cover limit surveys shall be on a separate <br />drawing sheet. Drawing sheets to be considered are as follows: <br />a. Top of Prepared Subgrade grid <br />b. LFG gas trenches <br />c. Geomembrane cover limit <br />d. Ditch alignment and grades <br />Some record drawings may be combined with prior authorization from Engineer. <br />Drawings shall be F=50' scale and shall be in AutoCAD version 2010 format. <br />Drawings are to be produced in electronic format, on CD disk with hard prints on <br />bond. The hard copy set shall be sealed by the Surveyor. <br />4. A letter certifying that the earthwork layers are within specified grading <br />tolerances and meet or exceed specified thickness shall be prepared, sealed by <br />the Surveyor, and accompany the record survey drawing submittal. <br />ISHAW ENV/RONMENTAL, INC. <br />San Joaquin County —Extension of Cap Corral Hollow Sanitary Landfill — CH—Closure Cap Ext Proj—Technical Specs -4-19-12 Revl.DocRev. 0, 04/05/2012 <br />1 Layout of Work and Surveys <br />1 01052-4 <br />5. The Record Survey Drawing preparation and submittal may be prepared for <br />each layer and submitted with or following the submittal of the verification <br />survey data in Article 1.04 B.5. The Engineer shall have 10 working days for <br />review. <br />6. AutoCAD drawings shall be on the same basis as the Construction Drawings. <br />i <br />ISHAW ENV/RONMENTAL, INC. <br />San Joaquin County —Extension of Cap Corral Hollow Sanitary Landfill — CH—Closure Cap Ext Proj—Technical Specs -4-19-12 Revl.DocRev. 0, 04/05/2012 <br />1 Layout of Work and Surveys <br />1 01052-4 <br />