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<br />TABLE 1 <br />Materials Quality Control Program <br />SoillBentonite <br />Slurry Trench Cutoff Wall <br />Subject Standard Type of Test Minimum Frequency Specified Values <br /> -pH Per water source or as As required to properly hydrate <br /> Water ___ -Total Hardness chan es occur bentonite with a roved additives <br /> Manufacturers certificate of <br /> Additives --- compliance with stated One time As approved by Engineer <br /> characteristics <br />Material Bentonite API Std 13A Manufacturers certificate of One time Premium grade sodium cation <br /> com liance montomorillonite <br /> 80 to 100% passing 2" <br /> Selected soils obtained from <br />Per borrow source or as 65 to 100% passing 3/8" <br /> Backfill Soils --- a borrow area approved by <br />changes occur 40 to 85% passing #20 <br /> the Engineer >_ 30% passing #200 <br /> Roll to 1/8" thread <br /> -Unit Weight -Unit weight ? 1.03 gm/cc <br /> Prepared for -Viscosity 1 set per shift or per batch -V >_ 40 sec-March @ 68° <br /> placement into API Std 13B -Filtrate Loss (pond) -Loss <_ 30 cc in 30 min. @ 100 psi <br />Slurry the trench -pH > 8 <br /> -pH <br /> -Unit Weight 1 set per shift per point of -Unit weight =1.03 -1.40 gm/cc <br /> In Trench API Std 13B 1 -Sand Content trenchin -Sand content <_ 20% b volume <br /> Slump 2 to 6" <br /> -Slump 1 set per 100 culyds 80 to 100% passing 2" <br />" <br />Backfill Mix At Trench ASTM C-143 _Gradation 1 set per 300 culyds 65 to 100% passing 3/8 <br /> 40 to 85% passing #20 <br /> >_ 30% assin #200 <br />P:10134 Hall Irwin CansWc6on10134.017 Hek PitlConsWc6on ReporMAaterials duality Control.fat.doc <br />