Laserfiche WebLink
TABLE 1 <br />QUALITY CONTROL PROGRAM <br />SOILIBENTONITE SLURRY TRENCH CUTOFF WALL <br />Subject Frequency Specified Values <br />Bottom Soundin s Per 10 lineal feet Greater of desi n de th or 4' ke <br />Water Per source <br />pH pH between 6.0 and 8.0 <br />Hardness Hardness less than ore ual to 200 m <br />Bentonite Manufacturers certificate on each truck load API Standard 13A <br />Slurry Introduced into Trench <br />Unit Weight Twice per shift ? 1.03 gm/cc (64.27 pcf) <br />Viscosity Twice per shift >_ 40 sec. -Marsh @ 68 <br />Filtrate Loss Once per shift Loss >_ 30 cc in 30 minutes @ 100 psi <br />pH Once per shift >_ 7 and <_ 10 <br />Slurry in Trench Twice per shift <br />Unit Weight 1.03 -1.40 gm/cc (64.27 to 87.36 pcf) <br />Viscosity ? 40 sec. -Marsh @ 68 <br />Filtrate Loss Loss <_ 30 cc in 30 minutes 100 si <br />Backfill <br />Unit Weight Twice per shift >_ slurry in trench plus 15 pcf <br />Slump Twice per shift 2 - 6 inches <br />Gradation Once per shift ? 25% -200 <br />Triaxial Permeabilit Test One er 1,500 If <_ 1 x 10-~ cm/sec. <br />P:10186 Compass10186.0021SpecificafionslQC Pragram.Wl.doc <br />