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C <br />0 <br />0 <br />i <br />L- <br />I <br />C <br />C <br />u <br />I <br />C <br />0 <br />0 <br />fl <br />0 <br />u <br />I I <br />Li <br />3.07 SEAM LAYOUT <br />A. Orient seams parallel to line of a maximum slope, i.e., orient down, not across slope. <br />B. Minimize number of field seams in corners, odd -shaped geometric locations and <br />outside corners. <br />C. Keep horizontal seams (seams running approximately parallel to slope contours) at <br />least 6 feet away from toe or crest of slope, unless approved by Engineer. <br />D. Use seam -numbering system compatible with panel number system. <br />E. Shingle panels on all slopes and grades to promote drainage over the seam not into <br />the seam. <br />3.08 GENERAL WELDING PROCEDURES <br />A. Do not commence welding until trial weld test sample, made by that equipment <br />passes. <br />B. Provide at least one master seamer during all production welding to supervise all <br />other seamers. <br />C. Clean seam area surfaces of grease, moisture, dust, dirt, debris, or other foreign <br />material. <br />D. Overlap panels a minimum 3 inches for extrusion and 4 inches for hot wedge <br />welding. <br />E. Construct weld with adequate material width on each side of weld to allow peel and <br />shear testing. <br />F. Extend welding to the outside edge of all panels and to the outside edge of panels <br />placed in anchor trenches and under termination berms. <br />G. If required for firm support, provide a firm subsurface under the seaming area. <br />H. Cut fish mouths or wrinkles along the ridge of the wrinkle in order to achieve a flap <br />overlap. Extrusion weld the cut fish mouths or wrinkles where the overlap is more <br />than 3 inches. When there is less than 3 inches overlap, patch with an oval or round <br />patch extending a minimum of 6 inches in all directions beyond the cut. <br />3.09 EXTRUSION TYPE OF WELDING <br />A. Use procedures to tack bond adjacent panels together that do not damage <br />geomembrane and allow CQA tests to be performed. <br />SHAW ENVIRONMENTAL, 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 />LLDPE Geomembrane <br />02779-13 <br />