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(2) Slopes of twenty-five percent to forty percept in all other geologic units. <br /> c. Any area with all three of the fallowing characteristics: <br /> (1) Slopes}treater than.fifteen percent;and <br /> (2) Hillsides intersecting;geologic contacts with a relatively permeable sediment overlying a <br /> relatively impermeable sediment or bedrock;and <br /> (3) Springs,groundwater seepage,or saturated soils. <br /> d. Any area which has shown movement during the Holocene epoch(from ten thousand years <br /> ago to the present)or which is underlain or covered by mass e-=astage debris of that i6poch. <br /> e. Any area potentially unstable as a result of rapid st�.r40 <br /> ii incision, try cam batik erosio or <br /> undercutting by wave aCtlon. <br /> f. Arcas of historic failures,including areas df'unstable,told and recent landslides or landslide <br /> debris within ahead scarp,and areas exhibiting geomorpholog;ical features;indicative of past <br /> i slope failure,such as hummocky ground,slumps,eartiltlows,mudtlows,etc. <br />` g. Arty area with a slope of forty percent or steeper and with a vertical relief of fifteen or more <br /> p <br /> p <br /> feet,except those manmade slopes created under the design and inspection of a geoteclhnical <br />[ <br /> professional,or slopes comprised of consolidated rock. <br /> It, Areas that are at ri%k of landslide due to hip;lh seisnlic hazard. <br /> I: i. Arens that are at risk of landslides or litass movement due to severe erosiort 11bZardS." <br /> We observed no areas on the site showing indications of.past landslide activity,such as landslide <br /> headscarpzs and sidescarps, hummocky terrain, areas with geologic conditions that cart promote <br /> earth niovernew, or areas with signs of potential landslidilh.t;, such 'as springs, groundwater <br /> j sec-page, and bowed or backtilted trees. We did not observe any areas rvitlh topographic <br /> expression of runout 7.oiies, such its fans and CalliNial deposition at the face df hillsides. We <br /> reviewed the USGS neap for the subject sitc. .Based on our review, the site does not contain ropy <br /> known. or documented landslides, We did observe slopes steeper than. 40 percent along Elle <br /> western (uphill) end of the site. However, we observed .no relatively permeable sediment <br /> overlying a relatj,icty iroperrniable sediment or bcdrex lc. and we observed no springs or <br /> groundwater seepage. The: xteeper than 40 percent slopes located along the western end of the <br /> adway embankment.fill for Federal Avenue. <br /> site appear to be.ro <br /> Based on our review,according to the FMC, the site is not classified as having landslide lha7 <br /> areas. The steeper than 40 percent slopes located along the western end of tile site appear to be <br /> s: <br /> roadway erttbankinent fill for federal Avenue. The natural slope inclilhation would have been <br /> bef"veen 25 and 40 percent. The.Sits is underlain with medium dense IQ dense SBild with Silt and <br />= grnvel consistent with Advance Qutwaslt that will exhibit a relatively high shear strength and low <br /> catmflressibility. Pro surface seater is controlled on the site, and all structures are provided <br /> with proper subsurface drainage measures, the potential.for a landslide to occur at this site should <br /> C. be considered negligible. According to the BMC, the site is not classified as an active or a <br /> poti�tttial landslide hazard area. <br /> Ages En&enriag,LLC Page 4 <br /> r 253-845.7000 <br />