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• 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 or <br />visual monitoring. <br />Three inclinometers were constructed in borings 10, 18 and 23. The inclinometers were installed <br />by Maxim between May 29'" and June 7, 1996. The inclinometers will be monitored and results <br />reported to the DMG according to the following schedule: <br />1. Readings were taken on June 13, 1996 for the purpose of establishing a baseline <br />set of data. <br />2. Readings were taken on August 14, 1996 to confirm the baseline data. No <br />significant displacement was noted. <br />3. Readings will betaken in the fall of each year to establish a baseline for the spring <br />measurement. <br />4. Readings will be taken in the spring of each year during May or Tune. If <br />displacement is noted the DMG will be notified and the frequency of monitoring <br />will be determined in joint consultation with the DMG. At a minimum, the <br />inclinometers will be monitored monthly until no significant displacement is <br />measured and the slopes azejudged to be stable. <br />5. If no displacement is noted in the May or June reading, no further inclinometer <br />monitoring will be performed until the fall of the yeaz. <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 corcelations 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 /> 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 Z00 <br />WESTEC conducted additional geotechnical investigations at the site on January 24, 1997. The tazget <br />material for the investigation was Mancos shale. See the discussion below and WESTEC's report <br />presented in Tab 8. <br />• <br />-4- 2/13/97 <br />