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f <br />' Sen Luia Project - Phaac 11 Rene 1 Ezpsnaion Construction statue Report <br />' defective or leaky seams have averaged one for every 229 ft of seam indicating high quality <br />seaming operations. All seam leaks have been patched and retested. Repair of scuffs and <br />scratches on the liner have averaged 4.9 per roll of liner (21,775 ft'). Repair of holes in the <br />' liner have averaged one for every 22,476 kz of liner (]ess than one per roll). Repair of large <br />wrinkles or flaws in the liner have averaged one for every 116,127 ft2 of linev or one per 5.3 <br />rolls. Liner QA/QC results are presented in Appendix E. <br />5.4 Tailings <br />Although not part of the QA/QC program, testing of the tailings permeability has been <br />performed and is included herein to provide additional data for evaluating the performance of <br />the facility. Cone Penetrometer Test (CPT) probes were conducted to obtain insitu tailings <br />' characteristics for design of the raise. The results of the CPT program are described in detail <br />in the Phase II, Raise 1 Design Report. <br />' The CPT work included pore pressure dissipation measurements which were used to calculate <br />tailings permeability. The CPT tailings permeabilides ranged from 7.2x10" cm/sec to 4.2x1(7' <br />cm/sec. <br />' Additional tailings permeabilities were obtained in the lower impoundment azea at the request <br />of the Division to provide additional information for the reclamation and closure plan evaluation. <br />These permeability test results ranged from 1.9x10' cmtsec to 5.9x10-8 cm/sec. The wide range <br />' is attributed to the horizontally layered, variably consolidated nature of the tailings, however, <br />the results generally indicated decreased permeabilities with depth. The highler permeability <br />values tend to occur at shallower depths where the tailings are less consolidated. Field tailings <br />permeability test locations and results are included in Appendix F. A complete discussion of <br />' this program will be included in a reclamation and closure plan evaluation update to be submitted <br />in the future. <br /> <br /> <br /> <br />' October, 1993 rq SRK projat No. 14725 <br />