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• <br />HIGHLAND ENGINEERING <br />F. Dan Rinehart P. E. <br />Delta, Colorado 81416 <br />September 3, 1980 <br />• <br />Catherine Chachas <br />blestern Slope Carbon <br />315 East 200 South <br />M0402 <br />Salt Lake City, iltan 84111 <br />Dear Ms. Chachas: <br />Enclosed is a copy of the correspondance sent to you earlier. <br />I talked to the Soils lab again and they are still running tests on the <br />sample; so far the tests have been erratic. <br />Consolidation Shear <br />Load Strength <br />1000N 3300N/ft2 <br />2000N 2800N/f t2 <br />soon gook/fc2 <br />The soils lab indicates that the soil should be breaking in <br />shear at 2000M/ft2 to 3000N./ft2, therefore the shear strength in <br />the calculations (28CON/ft2)is as good a value as possible a[ this <br />time. All shear strengths completed by the lab are above the lowest <br />shear strength (327M/ft2) to achieve a safe factor of 1. This indicates <br />that there is no slope stability problem. <br />I will be sending you set of revised calculations as soon as <br />the lab report arrives. <br />Thank you for being so patient. ~ <br />_Si ly, j <br />~~ ` <br />F. Dan Rinehart P. E. <br />• <br />FDR/mh <br />o ~6~~~~ ~ <br />' SEP 081980 <br />WESTERN SLOPE CARBON,INC. <br />