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TABLE 1 <br />Materials Quality Control Program <br />Soil/Bentonite <br />Slurry Trench Cut-Off Wall <br />SUBJECT STANDARD TYPE OF TEST MINIMUM SPECIPIED VALUES <br /> FREQUENCY <br /> Water ---- -pH Per water source or as As required to properly <br /> -Total Hardness changes occur hydrate bentonite with <br /> a roved additives <br /> Additives ---- Manufacturers certificate of One time As approved by Engineer <br /> compliance with stand <br /> characteristics <br /> Bentonite API Srd 13A Manufacturers certificate of One time Premium grade sodium <br />Material compliance cation montomorilloni¢ <br /> Back(ilt Soils ---- Selected soils obtained from a Per borrow soune or as -65 to 100% passing 3/8" <br /> borrow area approved by the changes a:au -40 to 85% passing #20 <br /> &tginrcr -25 to 409'o passing #200 <br /> Roll to 1/8" thread <br /> Prepared for API Std 138 -Unit Weight Unit weight z I.03 gm/cc <br /> Plamment into the -Viscosity V z 40 sec-March @ 68° <br /> trench -Filtrate Loss 1 set per shik or per batch Loss s 30 cc in 30 min. <br /> (pond) ~ 100 psi <br />Slurry - H H z 8 <br /> in Trench API Std 136 1 -Unit Weight 1 set per shik at point of -Unit weight = 1.03 - 1.40 <br /> -Sand Content trenching gm/cc <br /> -Sand content = 209'o by <br /> volume <br /> At Trench ASTM C 143 -Slump 1 set per 100 cu/yds. -Slump 2 to 6 inches <br /> -Gradation 1 set per 300 cu/yds. -65 to 100% passing 3/8" <br /> sieve <br />Batkfdl Mix -40 to 85% passing #20 <br /> sieve <br /> -25 to 40% passing #200 <br /> sieve <br /> <br />• <br />• <br />