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Kvaerner Metal ~ Project No. 306900 <br />Gener pecification No. GC-16 <br />Geosynthetic Liner <br />the supporting sail surface caused by natural conditions shall be reported to the <br />Engineer. <br />HDPE sheets shall not be placed on subgrade soil which has become softened by water. <br />The Contractor shall provide for dewatering and for drying of the subgrade as required <br />during installation of the liner. <br />All joints shall be tightly bonded and shall have at least the strength of the base material. <br />Any liner area showing damage due to penetration by foreign objects or distress from <br />rough subgrade shall be replaced or covered and sealed, with an additional layer of <br />material, as directed by the Engineer. Any portion of liner damaged before or during <br />installation shall be removed or repaired at Contractor's expense. <br />Personnel working on the HDPE shall not smoke, or wear damaging shoes, as <br />determined by the Engineer, nor engage in other activities which could damage the liner. <br />Heavy foot-traffic contact with the HDPE liner shall be minimized. <br />The Engineer shall have the authority to order an immediate stoppage of the work due to <br />inclement weather, the use of improper installation procedures, or for any reason which, <br />in his sole opinion, may result in a defective liner. <br />Installation shall be performed under the direction of a field engineer who has installed a <br />minimum of 2,500.000 square feet of flexible lining material. The field engineer shall be <br />provided by the Contractor, and shall be in absolute charge of the liner installation. <br />The welding equipment used shall be capable of continuously monitoring and controlling <br />the temperatures in the zone of contact where the machine is actually fusing the lining <br />material, to ensure changes in weather conditions will not affect the integrity of the weld. <br />No "fish mouths" shall be allowed within the seam area. Where"fish mouths" occur, the <br />material shall be cut, overlapped and an overlap extrusion weld shall be applied. All <br />welds on completion of the work shall be tightly bonded. <br />6.0 QUALITY CONTROL <br />Failure of the matenal and/or welds to meet the requirements of this specification may be <br />sufficient cause for rejection of the work. Corrective measures, as directed by the <br />Engineer, shall be provided by the Contractor at his own expense. <br />The Contractor shall provide a t 5-year warranty covering materials and workmanship, as <br />well as degradation due to ultra-violet. Any repairs required within the warranty period <br />(after acceptance) shall be made at the Contrador's expense. <br />The Contractor shall supply the Engineer with the manufacturer's test report, conducted <br />on random sampling and testing during manufacture, on the liner material supplied. The <br />report should include testing for thickness, strength, tear resistance, low temperature <br />impact, density and dimensional stability performed by a qualified testing laboratory and <br />in accordance with applicable ASTM standards. <br />~ tilmY,wTevEGVrnuCTGCteSVt ooc, Rw NI g unto aqr +.. ,ar <br />