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<br />+s <br />SUBJECT <br />T <br />Prepared for <br />Placement into the <br />Irench <br />Slurry <br />In Trench <br />At Trench <br />Backfill Mix <br />TABLE 1 <br />Materials Quality Control Program <br />Soil/Bentonite Slurry Trench Cut-Off Wall <br />STANDARD ~ <br />TYPE OF TEST MINIXfUhI FREQUENCY <br />-pH Per water source or as <br />-Total Hardness changes occur <br />Manufacturers certificate of One time <br />compliance with stated <br />characteristics <br />API Std 13A Manufacturers certificate of r). t' <br />compliance <br />---- Selected soils obtained from <br />a borrow area approved by <br />the Engineer <br />API Std 138 -Unit Weight <br />Viscosity <br />-Filtrate Loss <br />-pH <br />AN Std 13B 1 -Unit Weight <br />-Sand Content <br />ASTM C 143 -Slump <br />-Gradation <br />SPECIFIED VALUES <br />As required to properly <br />hydrate Bentonite W. <br />approved additives <br />As approved hy'Engineer <br />e tme Premium grade sodium <br />cation montmerillnnite <br />Per borrow source or as -G5 to 100/ passing 3/8' <br />changes occur sieve <br /> -40 to 85% passing #20 <br /> sieve <br /> -25 to 40% passing #200 <br /> sieve <br /> Roll to 1/8" thread <br /> Unit weight 21.03 gin/cc <br />1 set per shift or per batch V 2 40 sec-March @ G8° <br />(pond) <br />Loss s 30 cc in 30 min, <br /> @ 100 psi <br /> pti x 8 <br />1 set per shift at point of Unit weight = <br />1 <br />1 <br />t)3 <br />benching •`t0 <br />• <br />- <br />gm/cc - Sand content = 0 <br /> to 20%, by volume <br />1 set per 100 cu/ycls. -Slump 2 to G inch <br /> <br />1 set per 300 cu/yds. es <br />-65 to 100% passing 3/8" <br /> sieve <br /> -40 10 85% passing #20 <br /> sieve <br /> -25 to 40% passing #200 <br /> sieve <br />