Laserfiche WebLink
_,I ... <br />slopes are planned to generally b:~ about 1.75 and 2 horizontal to <br />1 vertical. At Portal No. 1, 1 to 1 cuts and fills are pro- <br />posed. Conipactien of ttie subgrade and embankment fill is <br />specified at a minimum of 95% of standard Proctor density (ASThI <br />D698) at a moisture content within 2 percentage points of <br />optimum. <br />If design information for the structures varies significantly <br />from that described above, we should be notified for geotechnical <br />review and to perform additional analysis as required. <br />SITE COPIDITIONS <br />The site is located south of County Road 335 about two miles <br />east of Piew Castle in the NE1f4 of Section 6 and PJ411/4 of <br />Section 5, T.6S., R.oOW. The surface and geologic conditions of <br />the site were discussed in our prelirtiinary geotechnical investi- <br />gation. The site, which has remained vacant and undeveloped <br />since our previous study, consists of strongly to steeply sloping <br />alluvial fan deposits derived from Grand Hogbac;< Ridge to tt~e <br />south. The lower part of the site is strongly sloping and may <br />contain valley alluvium mixed with alluvial fan deposits below <br />about elevation 5700 feet. The lower part of the site has grades <br />ranging from about 6% to 10% down to the northwest. The middle <br />and upper part of the site has grades ranging from about 10% to <br />35%. Above the site ttie hillside becomes very steep with grades <br />approaching 100%. Total elevation difference across the proposed <br />facilities area is about 250 feet. <br />Chen & Associates <br />