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f <br /> The spill.w•ay for the esis�in� ear[h d�r� which retains the mannade iake <br /> i currently consists o[ a rock-lined drainage channel which runs around the <br /> 1 <br /> northwest end of the dam. lJe unders[and that cons[ruction of the Phase 2 build- <br /> � ing at the location shown on P1.ate 1 wi1.1 require that a new spillcay be ins[alled. <br /> This new spillway is erpected [o consist of a concre[e s[ruc[ure which vill 1ie <br /> Iacross Che dam embankment rather than being a[ one end of it. <br /> SCOPE <br /> � The purposes uf [his investigation are to explore che subsurface aoi] .mJ <br /> ground water conditions at the pro,ject si[e and to develep geotechnical recom- <br /> mendations and design cri[eria for the proposed facili[ies. Our specific scope <br /> � of services includes: <br /> 1. GxpLuration ;ind J.aboracury phase. <br /> I �1. Exploring �ubsurface soil and ground wa[er conditions b�� drill- <br /> ing 4 tes[ borings and excavating 25 [est pits throughout [he <br /> Iarea of pr.�posed construction. <br /> B. Developing supplemen[al information on sof[ soil [hicknesses Ln <br /> � localized bog areas by hand probing. <br /> C. Defining pertinen[ physical characteris[ics of [he foundati:n <br /> soils and potential fill soils irom the results of labor�[orv <br /> I [ests performed on disturbed and undisturbed samples, as apprn- <br /> priate. <br /> � 2 Design s[udies. <br /> I <br /> A. Recommending the exten[ of stripping, gruUbing and o[her site <br /> Ipreparation activities, including temporary drainage faciliCies, <br /> needed to prepare the siee for cutting and filling operati.ons. <br /> I B. Recommending the type of soil �nd compactio:� cri[eria [o be <br /> used f�r both s[ruc[ural and nonstructural fills. <br /> C. Recommending design cut and Yill slopes, bo[h [emporary and <br /> Ipermanen[, as appropriate. <br /> D. Developing design criteria and se[tlement estimates for shallow <br /> Ispread foundations Eur the proposed structures. <br /> � <br /> E. Evaluating [he characteris[ic site period (T ) . <br /> s <br /> iF. Defining laceral pressure criteria for the design oE basement <br /> walls and other retaining s[ruc[ures which may Ue required. <br /> I G. Evaluating drainagc reyuirements for basement walls. <br /> N. Providing recommenda[ions for floor slab supporc and pavement <br /> design sections. <br /> II� ) <br /> ' � - <br /> � <br /> � GeoEngineers <br /> Incorporcted <br />