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s) The outfall for the bi4-retention ba�ns�hall release tlae discharge near the <br /> ba�e uf the seasonal creek and shall not be alloa�ed to flow over the top af <br /> the creek banks. <br /> t} G�tt-offplugs consisting nf controlled density fill about 2 feet wid�at�d <br /> keyed inta the native sails sha�l be ins�allcd at 25-to 50-foot intervals along <br /> all pipeline tre�ches and at the b� 'ep nninG,,midpoints, and ends af the culvert <br /> and at136-�nch-diiame�er detention pipes. Specific reoommendatians for the <br /> cut-offplugs shall be presenbed in the desi,gn-levol geotechnical report. <br /> u) All proposed structurea shall be designed in accorc3a�tce with the seismic <br /> design cri�ria of the 2010 California BuiIding Code(CBC)or other recent <br /> applicable building oode. <br /> v) G�t areas in serpentinite anci exposed fill slopes composed vf aerpentinite <br /> rock shall be capped with asbestos-fi�e sdil. <br /> Mitigatian Mea�wre G�olagy-2:A design-level g�otechnical ir►ve$tigation shall <br /> be cornpleted for each lot and for the utility improvem�ts on Laur�1 Way. The <br /> geotechnica�ini•estiga#inn ahall include: <br /> a) Evaluation of the layoat of proposed undergravnd u�ilitios, exterior <br /> hardscape:,and re�taining wa11s to evai�uaxe whe�her surficial soil creep would <br /> irnpact these shuctures; <br /> b) Detailed surface and subsurface explora�ttions perFormed for each lot during <br /> the design-level geoteGhnicai investigatiant; data fi�am these investigations <br /> shall be u.sed ta generate foundation design criteria; <br /> c) Gonsideration of the need fnr exi�a steel reinfarcement nf piets an� gra�e <br /> be�ms,vc�ids beneath grade beams to mitigate uplift distress to the <br /> str�ctures,peximetet subdr�ins and moist�re barriers, and measuires <br /> ixnplementsd during construction ta prevent concrete o�er-paurs at the to�s <br /> of the c�rilled piers; and <br /> d,) Consideration of impacts aris,ing from excav$tians of f�undation elemen#s, <br /> inciudi.ng drilled piers. <br /> Re�ommendations in the design-Ievel investigation report ahall be implemented, <br /> as approved by Redwood City. At a minimum,the re�ornmendarions shall <br /> inelude: <br /> a) Recommendations for mitigating slape insta.bility during constru�ion,if <br /> necessary,by utilizing temporary excavation suppart systems or grsding <br /> con�ols; <br /> b) Recommendations far co�ive g�ding measures to replace existing <br /> unc�acuxne�o.ted fill with engineere�fi11; <br /> c) Reoommendatians to re�uce i�pact�to utility facili�es arising from <br /> differenti$1 movement related to expansive aoils; <br /> d} Rer�omrnendations tv reduce irnpacts ta shared hardscape(i.e.,roadways and <br /> sidevvalks) firom expansi��soils; <br /> 24 <br />