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KLEINFELDER <br /> TABLE 7-4 <br /> Pass/Fail Criteria <br /> ST PASS!/FAIL CRITERIA <br /> Foundation Layer <br /> Density lower 1 foot Maximum Practical - <br /> Density upper 1 foot 90%of ASTM D1557 or greater <br /> Moisture content Near Optimum <br /> Soil type Any type provided no contaminants <br /> Layer thickness Not less than 2 feet <br /> Clod size 4-inch maximum <br /> Barrier Layer <br /> Density 95% of ASTM D1557 or greater <br /> Moisture content 3% minimum wet of optimum <br /> USCS classification of borrow CH, CL, SC, ML, SM <br /> Grain size distribution of Minimum 60% passing#4 sieve <br /> soil/clay mixture <br /> Permeability (laboratory) Not greater than 5x10-6 cm/sec* <br /> AMIN& Permeability (field) Not greater than 1x10®6 cm/sec <br /> _ Layer thickness Not less than 1 foot <br /> Required laboratory permeability may be adjusted by the A Officer <br /> based on tes ad results. <br /> Vegetative Layer <br /> Density Approximately 80% to 85% <br /> j USCS classification CH, CL, SC, ML, SM <br /> Layer thickness Not less than 1 foot <br /> L <br /> r <br /> L <br /> CM5-276.wk1 Page 1 Copyright Kleinfelder Inc. 1991 <br />