Laserfiche WebLink
M98177GE <br />• No free subsurface water was encountered in our test borings at <br />the time of our field study. We anticipate that the free subsur- <br />face water elevation may fluctuate with seasonal and other varying <br />conditions. <br />It is difficult to predict if unexpected subsurface conditions. <br />will be encountered during construction. Since such conditions may <br />be found, we suggest that the owner and the contractor make provi- <br />sions in their budget and construction schedule to accommodate <br />unexpected subsurface conditions. <br />3.0 PLANNING AND DESIGN CONSIDERATIONS <br />A geologic hazard study was not included as part of the scope of <br />this report. We understand that the site geology and slope stabil- <br />ity was addressed by Maxim Technologies Inc. report, dated July 10, <br />1996. we understand that inclinometers were installed by Maxim <br />Technologies, Inc., and that inclinometer measurements have been <br />conducted. We suggest that you refer to the Maxim Technologies <br />Inc., reports for overall slope stability considerations. <br />{ During our field study we observed a spring near the upper <br />portion of the proposed conveyor alignment. The spring was about <br />ne-hundred-fifty (150) feet west of the proposed alignment north <br />of the existing access road east of the last switchback below the <br />mine portal bench. The spring was flowing a small amount of water <br />at the time of our observations. We suggest that the water be <br />collected as close to the source as possible and directed to <br />existing surface drainage structures. we suggest that the spring <br />water be directed into a lined channel to reduce the potential for <br />-, collected water to infiltrate into the subsurface soil materials. <br />4.0 ON-SITE DEVELOPMENT CONSIDERATIONS <br />} We anticipate that the subsurface water elevation may fluctuate <br />with seasonal and other varying conditions. Deep excavations may <br />encounter soils that tend to cave or a possibility of subsurface <br />water. If water is encountered it may be necessary to dewater <br />construction excavations to provide more suitable working condi- <br />tions. Excavations should be well braced or sloped to grevent wall <br />collapse. Federal, state and local safety codes should be ob- <br />served. <br />The site construction surface should be graded to drain surface <br />water away from the site excavations. Surface water should not be <br />5 <br />lambert anD ~.gsociates <br />CON$ULT~NG GEOTECNNiC,.~ ENWNEE 0.$ •ND <br />M~TEPUL lE$TiNG <br />