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M03086GE <br />~~ preparation for the proposed site <br />outlined below. <br />The scope of our services is <br />Our scope of services did not include performing subsurface <br />studies at the proposed site. We used soil test boring log <br />information and laboratory strength test data for our previ- <br />ously conducted geotechnical engineering study for the proposed <br />conveyor dated October 7, 1998. Our test boring 10 for the <br />conveyor study was located near the proposed portal bench area. <br />The subsurface information and strength data obtained from test <br />boring 10 from our conveyor study was used in our slope stabil- <br />ity analysis of the proposed portal bench and proposed stock- <br />pile configurations. <br />We were requested by Mr. Stover to perform a slope stability <br />analysis of the proposed portal bench excavation cut and em- <br />bankment fill material at the slope inclinations proposed for <br />the excavation cut and embankment fill at the portal bench and <br />the fill slope inclinations for the proposed stock pile areas <br />as determined by Mr. Stover. <br />- This report presents our geotechnical engineering comments, <br />suggestions and recommendations for slope stability based on <br />the soil strength values obtained from our previous study for <br />i the conveyor and cross sections of the proposed finished B-Seam <br />• portal bench and stockpile areas slopes provided by Mr. Stover. <br />- Our comments, suggestions and recommendations are based on the <br />laboratory test results from our previous study and planned <br />site slope configuration and cross sections provided by Mr. <br />Stover. <br />- Our study did not include any environmental or geologic hazard <br />issues. We did not assess the overall stability of the exist- <br />ing slope conditions. We understand that a overall existing <br />slope stability assessment has been provided by others. <br />- Our study did not include site specific subsurface information <br />or laboratory test results. The information used was from <br />nearby test borings and previous studies. We suggest that <br />samples be obtained at the time of construction or sooner for <br />laboratory strength tests to verify the assumptions used for <br />this analysis and report. <br />i <br />l~ <br />Lambert anD ~,s,~ociates <br />CONSULTING GEOTELNNILAL ENGINEERS AND <br />MATERIAL TESTING <br />