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TABLE 1 <br />Materials Quality Control Program <br />Soil/Bentonite <br />Slurry Trench Cut-Off Wall <br />SUBJECT <br />STANDARD <br />TYPE OF TEST <br />MINIMUM FREQUENCY <br />SPECIFIED VALUES <br />pH <br />Per water source or as changes <br />As required to properly hydrate <br />Water <br />— <br />Total Hardness <br />occur <br />bentomte with approved additives <br />Manufacturers certificate of <br />Additives <br />— <br />compliance with stated <br />One tune <br />As approved by Engineer <br />characteristics <br />Material <br />Bentomte <br />API Std 13A <br />Manufacturers certificate of <br />One time <br />Premium grade sodium cation <br />compliance <br />mommorillomte <br />ASTM D 422 <br />Selected soils obtained from a <br />65 to IWle passing 3/8" sieve <br />Backfill Soils <br />ASTM D 4318 <br />borrow area approved by the <br />Per borrow source or as changes <br />40 to 85% passing #20 sieve <br />occur <br />> 25 passing sieve <br />ASTM D 1140 <br />Engineer <br />thread <br />Roll to 1 /8" thread <br />Unit Weight <br />2 per shift or 1 per batch (pond) <br />> 64 pcf (1 03 gm/cro ) <br />Viscosity <br />2 per shift or I per batch (pond) <br />> 40 seconds <br />Prepared for <br />Placement into the <br />API Std 13B <br />Filtrate Loss <br />Iper shift or 1 per batch (pond) <br />< 30 cm' in 30 min @ 100 psi <br />trench <br />pH <br />1 per shift or 1 per batch (pond) <br />>8 <br />Slurry <br />Unit Weight <br />2 per shift <br />64 to 87 pcf (1 03 —1 40 gm/cm') <br />Viscosity <br />2 per shift <br />> 40 seconds <br />In Trench <br />API Std 13B 1 <br />Sand Content <br />iper shift <br />25% maximum <br />Filtrate Loss <br />1 per shift <br />< 30 cm' m 30 mm @ 100 psi <br />Slump <br />Iper 100 yds' <br />Slump 2 to 6 inches <br />ASTM C 143 <br />At Trench <br />65 to 100% passing 3/8" sieve <br />Backfi0 Mix <br />ASTM D <br />Gradation <br />1 per 300 yds' <br />40 to / passing sieve <br />ASTM D 140 <br />8 #200 siev <br />At Trench for <br />ASTM D 508403 <br />Flexible Wall Permeability Test <br />4 samples evenly spaced <br />< 1 x W cm/sec <br />Permeability Testing <br />Wattenberg Resource Pond 3 Slurry Wall Section 02168 — Slurry Wall Construction <br />Page 7 <br />