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Third Party Oversight <br /> <br />' 20 Water, Waste & Land, Inc. <br />San Luis Mine January 10, 1993 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br />Table 6.1 Summary of Construction DA Testing Frequency <br />Material Test Specified DMG Required Frequency Actual Test Frequency <br />Tested Frequency IDMG, 1993k1 <br />Type 1 - Density ' (BMRI, 1989) Show achievement of 2.8/vertica foot of <br />Phase II density at base of each raise 1- 1/1500 cy'I <br />Raise I lift <br />Embankment <br /> Gradation and ' (BMRI, 19891 None 1.1/vertical foot of <br /> moisture raise 1- 1/3800 cy) <br /> content <br /> Laboratory at significant None 1 <br /> Permeability material changes <br />Type 2 - Density ' (BMRI, 19891 None None <br />Drainage <br />Layer/Liner Gradation 1/'k acre ISRK, 11'h acre (already 1/'/. acre (:+verage <br />Cover 1993c1 placed); overall) (- 1/4000 cyl <br /> 1/1500 cy Ito be placed) <br /> Laboratory ' 1/acre (constant head) 8 Ito date) <br /> Permeability <br />Type 3 -Low Density ' (BMRI, 1989) None 1 / h acre (- 1 /800 cy) <br />Permeability <br />Layer Gradation ' (BMRI, 1989) None 111'/. acre:i (- 1!2000 <br /> cYl <br /> Laboratory ' 1/acre (falling head) None Ito date) <br /> Permeability <br /> Field ~ None 59 (BAT tests! <br /> Permeability <br />VLDPE Liner Destructive 7/500 feet of None 1/499 feet of seam <br /> seam (SRK, <br /> 1993a1 <br /> Conformance 1/100,000 sf" None 1/121,341 sf of liner <br /> (SRK, 1993a1 <br />' 1 test per shift if less than 2000 cubic yards was placed in a shift (BMRI, 19891• <br />2 tests per shift if 2000 to 4000 cubic yards was placed in the shift (BMRI, 1989). <br />1 test for every 2000 cubic yards over 4000 cubic yards placed in a shift (BMRI, 19891 <br />' cy -cubic yard <br />' at significant material changes <br />~ sf -square feet <br /> <br />