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Exhibit CC 09-21-2010 No. 2 Permanente Creek Flood Protection Project 1 c._ 14zi fro - L r � } � N � { 1. ' * k � . �.� , .,.. 4 Aik Permanente Creek Flood Protection Project Project Update Presentation to City of Cupertino September 21, 2010 Your Clean, Safe Creeks vote at work '� „?.:~ y ,r,., � :�,.� ,� * �`.�"� 3 �” g, sr ,.r " rS "� �,,. ^t ,... , . C .� »6m 5: ^.,� . _ . • Provide One - percent flood protection from the Ba y to El Camino Real by 2016 ($38.6 million available) • Address deteriorating concrete channels • Provide opportunities for environmental enhancements and trail extensions - ,.~ ' ... ''`- Air Sit."`,4°, '-‘"..,,•-','- .. , ,, ,,, t ,, - 4 mite 4rbie 4 .P .. '' '. 1 ,, *, , " „ ,--,- Floodvva .,.. ,,,,,ti t „ ,,.: :,„,_,.,,,, .,,,,,,i • 0 Channel widening New diversion structure ''''' d deten 1 - - ' .1 , ,.,,1 10,....7. #7,,,,,,,,,„,,;,,,,,4,-;/..,„ park . '.4 ,2 11 *''. . - 6,teigiv,:•1 • B McKelvey D cuesta Park Annex i ii‘inviitai - --- __-,,, _, ,_,,,,,,,,- e Blach Junior High School (I Rancho San Antonio Park 4 ,' r ./,.., ' W: ....; , , ' •-.,'•. ,,T ' i *L....,, • ' ,.'" . . , ...„ ,., ... el.", . • ' ' , ' '' i Y. ' ' - .4k0 ii• , * *, A „,..„; i s„,„ . ' 1 ',.," ; ? p ,.,. .... . , ' ....,... - 4 , AI ' i '' - ! ; (1 i o f Ow Ask. ' .,. , ' 1 : - ''- i , , .„.: -.! BASIN KEY FEATURES j ,--" / / - -.. . '' ..,„,.. , .. . ' 1 it'. ,- , . .. . . . 4p , • 15' deep basin ' .,- 1 f , • 60.2 acre-loot capacity i 1 19 SPACISI \ e ' _ ."!. - • Maximum 2 : 1 slopes i i t i -T. 1 , ,'. • Wall heights vary, up to 15 7 ' ...,4 f 1 1 ',, , • "Vortical Garden" walls where area is constrained and wails are high i .. i ,,_. -. \ 1 ,1k,, , _ : il , A Planting Incorporated at base of wa • ltS to soften scale § ..'' ..,, 1' , °,1 ' - . , , .. /1 ,.,. " , , It , i:.„'", ,, • Inflow / Outflow area at southwest corner 4- , I I ' . . ' N._ / . ' . ' ‘-` • Proposed parking 72 spaces, existing parking 48 spacos. - -., , _ s *, ,; - / I - . 61v tir 1 '‘‘,.,,f *A.. t - .1. Viewpoint location and key number ...-. 2' '`,.... '' : 07 Tfr'llonek 4914 ' ' ... ) / ; , . -,, ., . , 6.41■11. • - . - , . • , 1 lit 41. f' ' : , - e-:, , .,.. ,. , 4 ,4,..... , , ._ \ ._-_ • , , ,,•-_-,,, / ..., ,• t _ f 1.- II_ -....-,-, ,..t . . , rrt, ,. . \ ' -4: -: °"( --.' - 4, ...r'''''4 ° , •' ,'',' ' ar itt -' F ..': ' '-', ,. - '' ,-- , k ' t tA•OW r'' ' . ' . ' ' ‘?" I oot * . , / Fib "" ' r: ' I ' .- „: ' '.% ' ' . , ' .,,,' 1'1'A:el, '.„,,,,, , . , 'Ay, ,..„ , et.Frr ' ''." - ' .. .. 4.` ,... t .. f'' k ' 4 ' • '' ,* !, .....—, tr.1 1.' ----- , . 410 * °., e - ' ' ' . . ',, '' 'i : - • It. - . . .„ - ' ..< I , .... / ..., - „. - ........ . . ., ., .. ,,,, 4 %Ilk ' * . f . . . . , ' / A' , , , ,.... ,,... ... 4 ■41,... . , I1 . ..a.„ ,... . • , , ' .,..1..2.'''.', ' . • i • ' *Itnitik,,,e,. 4i !„ . .... " Kw" ' -. - • . . i.411111/0 - ' ,-.--, ' . ' ' . . . . • , ' ...; __fik.... ' 1:,..41114. . -9.- i_L , . . ,.'''. lin UM , 1 McKelvey Park Conceptual plan R H A 1 A - r „. --......-...,,,,,-„,„ ...__„ , 4 ,,, ' ”! +. ate! � e 1 114; s f a 1 Y , As y - .Y t silf ...... ''} � t? S • r sr ^ - . t s - fi r � s t � i ! 1 ilkitto4 f E r, kµ r y , ■ , ' 44** 9, _ - } al ff ., s 3 + 4 r� tutal > 4 & rorn s �ctra�stdicess M , dry c e bed feature 6. µ a ''' d toasus • c haracter of s s y x .. 3r' t h 1=3 .n s. Cuesta Park Annex Conceptual Design a k + ' " s 4 • Blach School Conceptual plan . 1 6 .,.r' 4 %asav_ r. $ ✓>Fl"., t t. .rW"v+.+.. . by a w, .,> ..,� « d X',.r : +.�'„>„.F 5.. ..,8`.�^anivAk.:, s .i,„,. r►ws.. ... a�IN�Wrw`4f ,,...; . 'y� f ' n ' 4 \ l _ f L i ` + . ANEW ' tom '�.� " t a " ', ° " a a s ,. * "` k ,-.., rF' `a M A rix .4. .- ,� '' sd. a ? '' t +ar ` - v a ? e, ✓ + es . t a s r "ti. y Post - project View of Detention Area = .. r _, Existing V la ■ ` Benefits 4 * .. �� Ran � • 8 acres of habitat potentially enhanced .4 � � , '.. ` x"" ' 11 Early flood protection to Mou ntain View and µ 7.--- ;,': ' ' \ il.: ts lit Los Altos „ = , ... " d ► . a µy/ 4 I mpacts * � � : ! : • Construction traffic impacts • Temporary Visual impact to nearby houses ,, r ���� ,„.,„ • Replacement of upstream maintenance bridge .;. ry "" il`�� :r� Lehigh Cement Storage ? � � �. . 4 • Construction traffic impacts could be ,, significantly reduced by storing excavated $Y � ",� D �Y{ F { i d t F soils on Lehigh property. First positive � . - ; „ Y,' ";, .. discussions have begun with Leh -. management. � Firm 4 A Rancho sun AntnnMa [ktcntinn Facility 'Not To Scale 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Planning Phase Design Phase Construction Phase 4 .4',, r� d 'M x �umn" c ?;� ;� a r,g ° r �, ✓ c;:fi �tA � w c rea mo w. v ��^�cr5�� ar '"fl�'" s�"` ex ep • Initial neighborhood outreach meetings for all detention sites (Sept. -Oct .) • Design team analyze and modify schematic design • Second neighborhood workshop likely November 2010 • Parks Commission and City Council /School Board /County Board Meetings • Construction 2012 to 2016 Offstream detention facility in Mor ..........q _IMMO .......... RN Bil P � � _, t ♦ i ., . * ai . r e k w / � 4° y.. 'I i ll odd 4111 .. .. se . k' ♦f �y_OyYO' .y i y ^ "i .•M•'' �sy3' +niti' w.o- .o- - .i�,ji� i r t - +. � . f •• i ~ i t4 4 '� "llsi F... k, I. , • W 1 . . ._ Y », +t*9� ♦ fi t - V ' "' r r `"" YAW .� a N 4p ..m _� 14. 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