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• but proper engineering <br />of the slopes determined no remediation techniques were required. The monitoring technique for <br />the at risk slopes will be selected based on the slope configuration and the remediation technique <br />employed. Monitoring techniques may include site lines, survey monuments, drain monitoring <br />or visual monitoring. <br />Three inclinometers were constructed in borings 10, 18 and 23. The inclinometers were installed <br />by Maxim between May 29s' and June 7, 1996. The inclinometers were unfortunately destroyed <br />during the 1947 initial site construction. <br />Geotechnical Laboratory Testing -Proposed Gob Pile <br />A geotechnical laboratory testing report (Tab 5) was prepazed to determine strength pazameters <br />for the gob pile design. This report was prepazed because the DMG did not accept BRL,'s <br />position that blow count correlations are an acceptable means to derive strength parameters for <br />the gob pile design. Therefore, BRL had Maxim perform some material tests. The following <br />table presents the results of Maxim's test and Westec's derived strength parameters. <br />• <br /> Westec Maxim <br />Westec Material Phi Cohesion psf Phi Cohesion psf <br />2 Colluvial Sandstone 36 0 32 900 <br />3 Mancos Shale 20 2000 12 1100 <br />4 Fill 25 150 36 200 <br />WESTEC conducted additional geotechnical investigations at the site on January 24, 1997. The <br />tazget material for the investigation was Mancos shale. See the discussion below and WESTEC's <br />report presented in Tab 8. <br />I • <br />-4- <br />5/07/03 <br />PR-~ <br />,q p~,~ovED <br />S~«~d3 <br />