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� <br />� <br />CASCADE GEOTECHNICAL <br />March 9, 1?89 <br />Job No. 892-22G <br />Gustavson Constructi�n <br />Page 5 <br />The fill should be placed ir. twelve (12) inch loose lifts and <br />compactpd to 908 of tt�e ASTM i)-1557 maximum dry density value and <br />the surf�ce graded to drain. <br />After placing the g:'av�l fill, we recommend 'eaving the roadway <br />Iunpaved as long as possible. 'Chis will make repairs of initial <br />settlements less expensive and much easier. <br />� <br />;td <br />We recommend that the subgrade be leveled and recompacted prior to <br />placing the base course and asphalt aurfacing. We recommend a <br />pavement section of four (4) inches of five-eighths (5/8) inch <br />minus crushed rock base course and two (2) inches of Class B <br />asphaltic concrete. <br />[Over nonorgani� native soi1J <br />In areas of the roadway to be placed on firm, nonorganic native <br />soil, we recommend a pavement aection consisting of four (4) inches <br />of five-eightha (5/8) inch minus crushed rock base course and two <br />(2) inches of Class 8 asphaltic concrete. This pavement section <br />may be place�i directly on the compacted, proof rolled native soil <br />subgrade or on structural fill that has been placed on the <br />undisturbed native soil. The structural fill should be placed in <br />twelve (12) inch loose lifts and compacted to 908 of the ASTM <br />D-1557 maximum dry density value, and should consist of one of the <br />materials mentioned above. <br />� Ut'_ities <br />� <br />Based on our conversation Nith Bob Jones of Lovell Sauerland and <br />Associates, inc. we understand that the sanitary and st�rm sewers <br />will not be run on the proposed roadway; however, a six (5) to <br />' �!1 <br />• ;';;! <br />, �s.� <br />,: <br />_ -;# <br />