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28 29 manufacturers may require a soil or a sand cover of at least 0 .45 m (18 inches), so cover soil requirements should be verified before placement with the Design Professional and geomembrane fabricator . Heavy equipment should operate on a minimum 1 m (3-foot) thick roadway where the “haul road” is established in and out of the containment area . Cover material shall consist of 12 mm (0 .5 inch) minus particles, clean rounded soils or gravels free of sharp edges, sticks, metal, rubbish, and debris or foreign materials . Site specific materials or sizes may be acceptable . It is recommended that the contractor receive prior written approval of acceptance of the cover materials from a geomembrane representative and/or Design Professional before covering the geomembrane . Cover soils should be dumped and leveled over the geomembrane and not pushed from one end to the other to minimize rolling and wrinkling of the geomembrane beneath the soils . Cover soil should always be placed from the bottom to the top of slopes to avoid stressing the geomembrane and slope stability problems . Equipment should be turned in long sweeping turns and not spun quickly to eliminate the chance of tires digging down to the geomembrane thru the cover soil and wrinkling or stretching the geomembrane . If geomembrane damage does occur during construction, cover placement, and/or filling, DO NOT COVER IT UP. Advise the foreman and CQA personnel so repair can be made and documented which will make doing the repair a lot easier than after cover soil placement or filling . Field Acceptance The Geomembrane will be accepted by the Owner’s Representative when all of the following have been completed: 1 . The entire installation is finished or on agreed upon subsections of the installation are finished (3 .01 A through 3 .01F) . 1 . All Installer’s QC documentation is complete and submitted to the Owner . 2 . Verification of the adequacy of all field seams and repairs and associated geomembrane testing is complete . Site Clean Up and Demobilization On completion of installation, the geomembrane installer shall dispose of all waste and scrap material in a location provided and approved by the owner . The installer should also remove all equipment used in connection with the work herein, and shall leave the premises in a neat and acceptable manner . No scrap material shall be left on the completed surface of the geomembrane or in the anchor trenches . Installation Instructions Page 9 of 9 InterWrap.com CANADA | USA | EUROPE | INDIA | CHINA CANADA | USA | EUROPE | INDIA | CHINA InterWrap.comPDF Image | GEOMEMBRANES
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