Approved Minutes of May 24, 2017, BCDC Engineering ... · p.m., in the Benicia Conference Room at 455 Golden Gate Avenue, San Francisco, California. The following Board Members were

ECRBMINUTESMay24,2017

TO: AllEngineeringCriteriaReviewBoardMembers

FROM: LawrenceJ.Goldzband,ExecutiveDirector(415/352-3653;[email protected])RafaelMontes,SeniorStaffEngineer(415/352-3670;[email protected])

SUBJECT:ApprovedMinutesofMay24,2017,BCDCEngineeringCriteriaReviewBoardMeeting

1. CalltoOrder.ThemeetingwascalledtoorderbytheChair,Dr.RogerBorcherdtat1:00p.m.,intheBeniciaConferenceRoomat455GoldenGateAvenue,SanFrancisco,California.

ThefollowingBoardMemberswerepresent:Dr.RogerBorcherdt,BoardChair,Robert“Bob”Battalio,PE,ProfessorMaryCatherineComerio,RichardB.Dornhelm,PE,LouGilpin,PhD,CEG,andWilliamHolmes,SE.

ThefollowingBoardMemberswerenotpresent:ProfessorMartinFischer,James“Jim”French,PE,GE,ProfessorJackMoehle,FrankRollo,PE,GE.

BCDCStaffMemberspresentwere:Mr.BradMcCrea,RegulatoryDirector,Ms.JaimeMichaels,ChiefofPermits,RafaelMontes,SeniorStaffEngineerandBoardSecretaryandElenaPerez,PermitAnalyst.

Theaudienceincludedthefollowing:CleveLivingston,LaconiaDevelopmentLLC,SamYao(SimpsonGumpertz&Heger-SGH),JeffFippin(ENGEO),PedroEspinosa(ENGEO),ToddBradford(ENGEO),JasonWhite(BKFEngineers),JustinAff(CMGLandscapeArchitecture),MaximoArgo(SGH),LutherGreene(RYC),C.MichaelLederer(BrickyardCove)

Mr.Montesaddressedthemeeting'sagendaaswellassomehousekeepingitemsatthestartofthemeeting;thoseincludedlocationofrestrooms,exitsandseveralotheritems.

ChairBorcherdtcalledforintroductions.

DuringintroductionsBoardMemberBattaliostatedthatEnvironmentalScienceAssociateshaddoneworkfortheCityofRichmond.Heaskedtheapplicantiftheyfeltheshouldrecusehimselffromtheprojectreviewanddiscussion.

Mr.Livingston,theprojectrepresentative,statedtheywouldhavenoobjectiontogettingMr.Battalio'sinputonthisprojectandwouldappreciateit.

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2. ApprovalofDraftMinutesforMarch21,2017,EngineeringCriteriaReviewBoard(ECRB)Meeting.

MOTION:BoardMemberComeriomovedapprovaloftheminutes,secondedbyBoardMemberHolmes.

BoardMemberDornhelmnotedonpage2,thesecondparagraphfromthebottommentionedtheAlamedaNavalWeaponsStation.HestateditwastheAlamedaNavalAirStationorNavalAviationDepot,notaWeaponsStation.

BoardChairBorcherdtcorrectedpage15asfollows:

Strikethelastparagraphbeginningwith"HerequestedtheBoard'scomments..."andreplaceitwithtwoshortsentencessaying:"TheBoardunanimouslyrecommendedthataletterbedraftedtoacknowledgethecontributionsoftheCSMIPprogram.TheChairvolunteeredtodraftaletterforreviewbytheBoardthatwouldbesenttotheExecutiveDirectorofBCDCforconsideration."

Inthesecondparagraphchange"TheChairacknowledged"to"TheBoardacknowledged"becausetherewasquiteabitofdiscussionamongtheBoardMembersastothatitem.Alsomovethelastsentenceinthatparagraphbeginningwith"Hementionedbrieflytheongoingwork..."totheprecedingparagraph.

Inthefirstparagraphstrikeoutthewords"disclosedhisintervention"andreplacethatwith"indicatedhisparticipationattheinvitationofBCDC."

Attheendofthatsentencealsoaddthephrase"asdocumentedinthetechnicalspecificationlettersprovidedbyCSMIPandtheapplicant."

VOTE:Themotioncarriedunanimously.

3. ApprovalofLetterofAcknowledgementforOutstandingContributionsofCSMIP.

MOTION:BoardMemberDornhelmmovedapprovaloftheletter,secondedbyBoardMemberGilpin.

VOTE:Themotioncarriedunanimously.

4. BoardDiscussion:LatitudeProject(formerlyreferredtoastheTerminalOneProject)(Pre-Application).BoardChairBorcherdtannounced:WehadanovervieworintroductiontothisprojectatameetingonJune7,2016,whichwasajointmeetingbetweentheECRBandtheDesignCriteriaReviewBoard.SowiththatsaidIwillturnitovertotheApplicant.

Mr.LivingstonaddressedtheBoard:Welookforwardtogettingyourinputandguidanceontheengineeringcriteriaissuesthatwearedealingwithonthisproject.

ThisisaprojectthatwillinvolvetherepurposingoftheTerminalOnewharfthatisover100yearsold.ThatrepurposedwharfwillserveasthecenterpieceforawaterfrontparkthatwillextendthelengthoftheshorelineoftheTerminalOneProject.

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ThestructuralengineeringissuesthatwillberaisedbythisrepurposingofthewharfwillbeaddressedbySimpsonGumpertz&HegerandwehavetworepresentativesfromSGHheretoday,SamYaoandMaxArgo.Theywillbepresentingadiscussionabouttheconditionassessmentthattheyperformedonthewharfandtheshorelineprotectionandinadditiontheywillbesharingtheirthoughtsregardingtheresultsofthestructuralanalysisthattheyhaveperformedonthewharf.

TheyhavebeenworkingverycloselywithourgeotechengineerENGEO.HeretodayfromENGEOwehaveJeffFippin,PedroEspinosaandToddBradford.Jeffwillbesharingwithyousomethoughtsaboutthegeotechnicalanalysisthattheyperformedonthesiteandwillalsobediscussingthedeep-soilmixingtechnologythatwewillbeusingtostabilizetheshoreline.

Inaddition,ENGEOandSGHhavebeenworkingwithourcivilengineeringteamthatisfromBKFtodotheanalysisthatisgoingtobecriticaltotheimprovementofthesite.WehaveheretodayfromBKFJasonWhitewhowillbesharingwithyousomethoughtsthatwehaveregardinghowwearegoingtobedealingwiththefloodriskthatisassociatedwiththedevelopmentofthesiteaswellaswithsealevelrise.

AndthenfinallywehavewithustodayJustinAfffromCMG.CMGisthelandscapearchitectontheprojectandIthinkitisfairtosaythatthesuccessofthisprojectwilllargelydependuponthecreativityofCMGintermsofcomingupwithimprovementsthatwillsignificantlyanddramaticallyenhancethepublicaccesstotheshoreline.

Iwouldliketorunthroughsomeslidesthatwillgiveyousomehistoricalcontextforthisprojectandalsowillsetthelanduseplanningstageforthediscussionofengineeringcriteriathatwillfollow.

ThisfirstimageisarepresentationanditshowsthelocationoftheprojectsiteinRichmond.Thesiteislocatedona13-acreportionoflandthatextendsintotheBay.Itisaveryunusualsite,auniquesite,becauseitprovidesnotonlypanoramicviewsoftheentiretheBaybutitalsoprovidesdirectandintimateopportunityforconnectingwiththeshorelineenvironment.

ThisistheRichmondBridge.OverontheeastoftheprojectsiteistheRosietheRivetermuseumandthereconditionedFordplant.Thisiswherethenewferryterminalwillgo.Sothepropertyisextremelywell-situatedintermsoftheregionaltransportationgrid.

Thisisanaerialviewwiththelandplanthatweareproposingsuperimposedupontheadjacentpropertyareas.Again,thisprojectsiteishighlyunusualinthesensethatitissurroundedonthreesidesbynaturalelements.

Theportfacilitythatexistedonthesitewasoriginallyconstructedin1915.Thereisa94,000-square-footwarehousethatstillexistsonthesite.ThispropertyisallbuiltonfillandthereweresomeadditionalindustrialrelatedusesalongtheshorelinebutBrickyardCovewasundevelopedatthetime.

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TheYachtClubhasbeenbuiltimmediatelyadjacenttotheTerminalOnesiteandthentheCovehasbeendevelopedintoaresidentialenclavetotheeastoftheRichmondYachtClub.

ThisisapictureofthesiteaftertheRichmondRedevelopmentAgencytookstepstopreparethesiteforredevelopment.In2002theRichmondRedevelopmentAgencyremovedthestoragetanksyousawinthepriorpictureandtheytookstepstoremediatetheexistingcontaminationonthesite.Thoseactivitiescontinueduntil2008andthesitehasremainedrelativelyunchangedfrom2008.

Althoughthestoragetankshavebeenremovedthesiteislargelystillcoveredbyhardscapeelements,foundationsforthetanksandothermaterialsthatwillneedtoberemovedasthepropertyisredeveloped.

Therearereallytwomajorelementsofthisproject.Oneisaresidentialdevelopmentthatconsistsof316residentialunits.

Therewillbe295condominiumflatsandthoseflatswillbelocatedinfivefour-andfive-storybuildingsthatarespreadacrossthesite.

ThesecondmajorcomponentoftheprojectisthewaterfrontparkandthatparkwillextendfromtheintersectionofDornanDriveandBrickyardCoveRoaddowntothesouthandwraparoundtheresidentialportionofthesiteandcomebackinandreconnectwithBrickyardCoveRoad.

Itincludesacoupleofveryimportantfeatures:

One,anextensionoftheBayTrail,whichwillpickupBrickyardCoveRoadhereandrunalongtheoutsideofthelooproadwaythatwewillbeconstructingtoprovideautomobileaccesstothewaterfront.TheBayTrailwillrunalongtheoutsideofthatlooproadrepurposingthewharfintoapublicparkfeaturethatwillbethecenterpieceofthiswaterfrontpark.

Allofthedevelopmentwithinthe100-footshorelinezoneisintendedtoaccommodatethepublicandpublicaccess.

Wearecurrentlyworkingonimprovementsforthewharf.Wewouldliketohaveawooddeckhereanditwillprovideanelevatedplatformforviewingandperhapssomepicnicactivities.

Wewillhavealittle,informalamphitheaterhere.Itisjustasmall,informalareawhereyoucouldhaveaweddingorsomethingofthatnature.

Wewillhaveaturfareawhichwillsupportsomeinformalactivitiesandagardensectionofthedeckthatwillprovidesomealmost-nativehabitatforviewingandsitting.

SowiththatwhatIwouldliketodoisturnthepodiumovertoSamYao.Samwillintroducethevariouselementsoftheprojectthatweareheretodaytodiscuss.

Mr.Yaomadethefollowingpresentation:Clevejustgaveanoverviewoftheproject,heisfromLaconia.

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CMGisgoingtotalkalittleaboutthelandscaping,that'saworkinprogress.

ThenthegeotechENGEOisgoingtopresentthegeotechnicalexplorationfindingsandIwilltalkaboutthestructuralconditionofthewharf.

ThenJasonWhiteisgoingtodiscussthefloodingandsealevelriseissues.

Iwillthenpickitupwiththeshorelineprotectionassessment.

Justin,doyouwanttosaysomethingaboutit?

Mr.Affreplied:ThelandscapedesignforthewharfisagreatamenityforprovidingpublicaccesstothewaterfrontaswellasavarietyofotheramenitiesthatClevedescribed.

Themainprogramspacessitwithinthehistoricfootprintofthewarehouseanditisplannedtoraisethatupbetween18and24inchestoacceptsoil,structuralelementsforthedeckanddrainage.ThisdesignwaspresentedtotheBCDCDRBapproximatelyoneyearagoandwearecurrentlyrevisingthedesignaswecoordinatewiththestructuralandgeotechnicalengineersandwewillbecomingbacktotheBCDCDesignReviewBoardwithinthenextfewmonthstopresentthereviseddesign.

Mr.Fippincommented:IamJeffwithENGEOandIwilltalkaboutthegeotechnicalaspectsoftheproject.

ENGEOhascompletedreportsatthesitein2003,2014and2016andanothergeotechnicalengineerworkedonthesiteinthelate'90s.

Somostrecentlyweperformedthreedeepborings,onebehindthewharf,oneinthemiddleofthewharfthrougharockdikeandoneoutnearthewater'sedgeaswellassomeCPTstobetterinformtheshorelineconditionsfromageotechperspective.

Sobasedonallthatdatawecreatedthiscross-section,whichisveryrepresentativeofwhatweseeacrossthesite.Thesitewasbuiltabout1915;sowhentheyfirstdevelopedthesitetheyreclaimedtheland.Allofthesiteatthewharfandthebacklandsareallreclaimedland;filloverwhatusedtobetheBay.

Tofirstreclaimthesiteadredgingprocesswasperformed;aslotcutwasmadeandthenitwasbackfilledwitharockdike.Thereisanas-builtthatshowsyoungBaymudbelowthebottomoftherockdike.Toconfirmthatwedrilledthroughtherockdikeandconfirmedthattherewas10feetofsoilbelowtherockdike,whichmatchesverywellwithwhattheas-builtdocumentsshow.Sotheyplacedtherockdikeandthenputfillbehindit,whichisamixreallyclosetotherockdike,itisamixofBaymuddredgedfromhereandrockfromthehillsidecut.Asyoumovefurtherinlanditismostlyrockcut.

Inthiscrosssectiontheoriginalshorelineis1,000feetbeyondtheedgetotheright.BedrockatthesiteisprimarilyrocksassociatedwiththeFranciscancomplex.

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Wedidsomeslopestabilityanalysis.Underastaticconditionthisslopeisplentystablebutunderseismicloading,underthedesignearthquakeunderthecurrentCaliforniaBuildingCodeweidentifiedbothwithcircularandnon-circularfailuresurfacesafailuresurfacethatwantstotravelalongtheyoungBaymudandgowellbackintothesitehundredsoffeetandcouldperhapsdisplaceontheorderoffeet,whichwouldbeunacceptableforboththewharfaswellasthestructuresthatwewanttobuildbehind;soourmitigationforthatistobuildabuttressinthegroundbydoingdeep-soilmixingbehindtherockdike.Therockdikeessentiallywrapsaroundtheentireshoreline.

Itisrelativelyofsimilarconfiguration.Soitessentiallyformstheentireshorelineandthenriprapwasplacedatopit.Sotherockdikeitselfisamix.Itisamixofsandandgravel.

Weknowfromtheas-builtthattheycutaslotthatlookedlikethis.Thebathymetryshowsthatthereissoiltheresowehavejustputinsoilthathasverylowstrengthandatinybitofweightinourmodelingbecauseweknowthatitwasin-filledprobablythroughaccretion.Inourstrengthmodelingthathasverylowstrength.Andwedrovethroughittoo;wehaveaboringthatwasoverhereandencounteredverylowstrength,verylowdensitysoil.

Sobecauseoftheextremelysoftsoilatthesiteandthecomplexityofhavingrelativelyshallow,relativelyhardbedrock,wedidasiteresponseanalysistodetermineifthesoftsoilwouldaffectthegroundshakingatthesiteforstructuralanalysis.

WefollowedASCE7-10procedureswherewecameupwithatargetspectrumthatrepresentedbedrockbasedonthedesignspectrumfromtheBuildingCode,selectedfiverepresentativegroundmotionsthatarecommonlyusedinthearea,matchedthemtothetargetspectrumandthendidone-dimensionallinearequivalentsiteresponseanalysisandcameupwithdifferenttimehistoriesatthegroundsurfaceastheytraveledthroughthesoilcolumn;andthencomparedthoseperthebuildingCodetothe80percentmappeddesignresponsespectrumandcameupwiththeenvelopingcurvethatdoesn'tgobelowthe80percent.

SowhatweseeisthatifyouweretocomparethesiteclassE;atthereallylowperiodsthepeakgroundaccelerationisslightlybelowthetargetspectrum.Intheperiodsofinterestofthestructure,somewherearound0.75ofasecondouttoabout2secondstheaveragespectrumisgreaterthantheCode.ThenatreallylongperiodsitwantstobelowerthantheCodeandwejustmatchittotheCode.

Ithinkitissoftsoiloverstiffrock.ItcomesupwithsomethingthatintheperiodofinterestofthisstructureishigherthanwhattheBuildingCodewouldtellyou.WethinkwegotthespectrumdialedinreallywellandthenSGHusedthatfortheirstructuralanalysis.

Mr.Livingstoncommented:IthinkwhatwesaidattheJune7thpresentationswerethatwehadnotfoundtheas-builts.BKFwentthroughtheirfilesandfoundas-builtplans.

Mr.Yaocontinued:Iwilldiscussourassessmentoftheexistingstructuralconditions.

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Thewharfifabout550feetby91feetandrightnowthereisawarehouseontopofthat.

Thestructureisaverythinconcretedeck,about5inches,supportedonbeamsandgirdersandsupportedbyover500piles.

Thisisageneraloverviewcross-sectionofthewharf.Thosepilesareessentiallyona10feetgrid.Therearesometimberpiles,batteredtimberpiles.Essentiallyit'smeanttobedesignedfortakingtheberthingloads.Itusedtobeberthingalotofshipsandbarges.

Thebackofthestructureseismicdesignisacolumnsupportingapilecapandsupportingatimberpile.

Onthelandsideofthewharfthereisabulkheadwall,aconcretebulkheadwalldividedbythe20inchby20inchsquarecolumns.

Thisisthetypicalbandsinthemiddle.Thosebeamsarerunningtransverseandlongitudinalandhaveacoverconnectedwiththepileunderneathandthatisthepilecaprunning.

Ifyoulookatthespiralsonthosepiles;thoseareverymuchclosetoourmoderndesigns100yearslater.Backthentherewasnoconceptofhinge.

Sowehaveallthedetails.Weknowthewharfverywell.

Wedidacorethroughthedeck,throughthepileandthroughthebeam.Thepilesstartingfromthemeanlowwateruptotheundersideofthedeck,includingsomeofthebeams,hadshotcreteforprotection.

Youseesomeofthecoreswehavetakenarefromtheconcretepiles.Herewefoundtherebarandwearecoringbetweentherebar.Thatistherealconcretepile.

Thisisthecorethroughtheback.Wehaveasphaltonthetopandtheconcreteonthedeck.

Thestrengthisnotrealhighbutitisprettycommonbythestandardof1915,3,000/4,000psi.

WeratedeachpileaccordingtotheAmericanSocietyofCivilEngineersManualofPracticeforratingthepiles.Asyoulookatthis,thosearethestandardsoftheindustry.

Ifweratedthepileasmoderatedeteriorationitmeansthatyouwouldseecracksoverit.

Butifitismajoritmeansthatyouseespalls,youhaveverylargecrackscomingupbutitdoesnotshowtherebar.

Onceyouhaveamajorspallexposingtherebarwecallitsevere.Severeisawiderange.Youcanshowthattheconcretespallexposedtheoldrebaruptothewholesection.Asweshowherethewholesectionofconcreteisgone.

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Soitisaverywiderangebuttheratingsfollowthestandard.Thisisthesummaryofthepileratingswefound.

Thisistheshotcrete,hereistheshotcrete.Butrightinthefrontthereisnoshotcrete.Myguessisbythetimetheydidtheshotcreteitwasalreadybroken,essentiallybroken.Butthispartisvery,veryneartothewharf,therewasnotshotcrete.Iwouldsay60to70percentofthepilesinthetidalzonewereshotcretedtoprotecttheconcretebecausethetidewentupanddown.Butthisiswayabovethetide.

Wedidnotcuttherebar.Butbasedonthecoreswehavetaken,passingthroughtheshotcretetogettothereinforcedconcrete,thestrengthisgood,theconcretewasnotdeteriorated.Wedidnotlookattherebar.Butatthispointthemajorityofthepileshad4to7inchesofshotcreteprotectingthem.Iftheshotcretestayedaroundfor10,15yearsthereisasignificantcorrosionoftherebar,thatshotcreteisnotgoingtobeabletocontainexpansionofthecorrosion,itisgoingtocrack.

Wecannotsaythatpartiallycorrodedrebarwasprotectedfromfurthercorrosiononcetheyputtheshotcretein.However,theconcretetestingshowsthatthechlorides,thesaltintrudingintothepilesexceededthethresholdforthestartingofcorrosionwithinthosepiles.

Thetestingreportwegotbacksaidthatthereisnothingirregularintheoriginalconcretepile.

SoIwanttogiveasummaryoftherating:33pilesareMinor.ThemajorityofthepilesareinModeratecondition.ThenwehavegotMajordeteriorationofabout20percentofthepiles.ThentheSeveredeteriorationislessthan5percent,about30pilesareinSeverecondition.

Itisveryhardtotelltheconditionsofthetimberpiles.Butingeneralouranalysisdoesnotnecessarilydependonthetimberpiles.Weunderstandthosetimberpilesstayaroundfor100years.Wearenotintentionallyassigningasignificantvariancetothosetimberpiles.

Thetimberpileswereputinfortheberthingloads.

WelookedattheSevereconditionofcertainpiles.AmongtheSevereratingofpilesthereisawiderangeofconditions.Aswemoveaheadtofinalizeourdesignwewanttokeepthisinmind.

Wewilldeterminelaterhowmanyneedtobereplaced.Rightnowwearejustpresentingtheconditions.Itwillverymuchdependonwhatwedowiththewharf,howmuchlandscapingisontopofthis.ButingeneralwewouldliketorepairtheSeveredamagedpilestomeetthesafetyrequirementsoftheCaliforniaBuildingCode.

Fromastructuralperspective,withoutinformationfromthegeotech,fromastructuralperspectiveweareworkingwiththelandscapingarchitecttotrytocomeupwitha35percentdesignbutwearenotthereyet.

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Mr.Montescommented:MyassessmentisthatitwillcomebacktotheECRBforafullassessmentofthegeotechnicalandstructuralaspects.

Mr.Yaoadded:IwouldsaythatwhatwepresenttotheDesignCriteriaReviewBoardtodayiswhatwearegoingtostickwithfora35percentdesign,75percentdesignanda100percentdesign.Iwillcomebackandpresenttheseismiccriteriaandjustthedesigncriteria.Wearegoingtostickwiththataslongasyouapproveit.Butthe35percentresults,typicallyyouarelookingforacceptance,approval.Wearenotquitethereyetbutwearealmostthere.

Wearelookingforyourinputnowatour35percentdesignstage.

BoardMemberBattalioasked:Forthosepilesthataremoderatelydamagedwouldyouanticipatethattheymayprogresstoamoreseverelevelofdamagethroughspallingorotheractionduringthelifeoftheproject?

Mr.Yaoreplied:Laconiahiredustofinishthedesign.Iwillserveasthestructuralengineerofrecord.IwouldmakeaformalrecommendationtoLaconiathatyouneedtohaveperiodicalinspectionstomonitorthedeteriorationofthepiles.Ofcourseallthepilesdeteriorate,someofthemfaster,someofthemslower.EventheCaliforniaBuildingCode,Chapter31F,doeshavearecommendationbasedontheconditionofthepile,howoftenyouneedtodoapileinspection.SowewillaspartofourdesignpackagegivearecommendationtoLaconiaforinspectionandgivethemallthepileinspectionrecordswemadesoeitherwedoitorsomebodyelsecandoit;that'sthebase.

BoardMemberBattalioclarified:Sotheassumptionthenisthatthemoderatelydeterioratedpileswouldhaveacapacityorwhatever,exceedingwhateverdesignlevelisrequired?

Mr.Yaoagreed:Thatiscorrect.Wethinkthattheshotcrete,thestrengthisreasonablyhigh.Theshotcretecontainedawiremesh.Butourstructuralassessmentignoredtheshotcrete,justassumedtheoriginalconcretepileswith4,000psistrength,sothatisourbase.Buthoweveryoudohaveshotcreteinacertainportionofthepiles;thatisagivenfact.Ithinkthatingeneralthatthepilesthatdonothavesectionloss,theyprobablyhavethecapacitytocarrytheloads.Butyouhaveacertainamountofsectionloss.Youaregoingtoreducethepilecapacity.Thatisthewaywewouldapproachit.

All30pilesoverhereonthistableareratedSevere.ButwithintheSevereratingthereisadegreeofdeteriorationsowedivideditintothreecategorieswithintheSevererating,the30piles.Only3pileshavesectionlossofover50percent,another3pileswithsectionlossof25to50percent,andtherestofthemarelessthan25percent.

BoardMemberHolmescommented:IamjustlookingatthedescriptionofMajor.Itincludesmultiplecracksanddisintegrationduetochemicaldeterioration.Thatsoundslikesomethingthatmaybeshouldnotwaitforinspection,itsoundslikethatshouldbefixedordeteriorationstoppedimmediately.

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Mr.Yaoagreed:Iagreewithyou,Mr.Holmes.Ithinkthatwhenweapproachthepilerepairweworkwiththeowner.Youstudynotjustthestrengthrepairbutstartwithyourpreventativemeasuresearly.Actuallylong-termyouaresavingmoney.Buttheirapproach,peoplejustsay,"Ionlyrepairwhatisnecessary."Sowewillworkouttheoptions.Aslongasitismeetingthesafetyrequirementwehavemultipleoptionsforthemtochoose.Butmypersonalexperienceisthatifwetakethepreventativemeasuresearly,actuallylong-termyousavemoney,yousavemoneybymaintaining.

BoardMemberHolmesasked:WhatdoestheASCEguidethatyouaretakingthisfromsuggestaboutMajor?

Mr.Yaoexplained:TheASCEguidedoesnotrecommendasetmeasurefortheMajorcategory.ASCEisjusttohaveapples-to-applescomparison,everybodyisgoingtorateitthesameway,haveveryspecificcriteria,youratethisMajor,youratethisSevere,youratethisModeratesowehaveacommonlanguage.

In2005thatinspectionwasverybrief,wasnotratedaccordingtostandardindustrypracticetodaysoitisveryhardtomakeacomparison.Butingeneralwedoseethatthestructuredoesunderstandablydeteriorateoverthelast11years.

BoardMemberHolmescontinued:Butjustlookingatthesedescriptions,IcanseeModeratebeingputoffandinspected,thatmakesalotofsense,butthedescriptionofMajordidnotappealtomethatway.

Mr.Yaoadded:Well,thestructuralassessment,itisdebatableiftheMajordeteriorationconstitutesamajordefectonthestructuralcapacity.ButingeneralweliketoaddressthisbeforeitbecomesSevere.Sothatismyexperience.Thefirstoptionissomeownersdonotwanttodothat,theywanttodelay.Thatisanoption,stillmeetingtheBuildingCode.

Weareintheprocessofdoingacapacityanalysiswithseismicload.

BoardMemberBattaliostated:Iguessthequestionwaswhetherornottheproposedloadingislessthanthewharfloading.IguessitmightbeverticallybutIdonotknowaboutthelateral.

Mr.Yaoreplied:Well,thisisaveryimportantpointIhadplannedtoaddresslaterbutsinceyoubroughtitupIwilljustsaythis:Thiswharfwasdesignedforvery,veryheavyindustryloads.Forthefuturepublicaccesswewillneverseesuchhighloads.

Butsayingthat,thepublicsafetyshouldnotbeputindanger,westillneedtomeettheBuildingCode;butthewharfisverysturdy.Itwasdesignedforloadsseveraltimeshigherthanwhatweplanfor.Sotheloadswearegoingtoputonthewharfaremuchlighter.

WetakethewholethingintoconsiderationbutwearegoingtoprovethatwearemeetingtheBuildingCode.Wewillstillkeepthewharfhealthy,atleastforseveralyearsforthenextinspection.Thatisthegoal.

Iwillpresentdatarelatingtoseismicloadabitlater.

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BoardMemberDornhelmcommented:SoIinferfromthisthatthedevelopmentremainsresponsibleforthemaintenancewhichincludesthefutureinspectionsofthewharfsothatweknowthatwhatwearecountingonbeingdonetoprotectthepublicspaces,ratherthanjusttheprivatespaces,willbeaddressedintheplanthatyouprepare.

Mr.Livingstonstated:Thatiscorrect.

Mr.JasonWhiteofBKFEngineeringaddressedtheBoard:Iwilltalkalittlebitaboutsealevelriseandfloodingatthesite.

WeperformedananalysisaspartoftheEIRfortheprojectfordesigningthesiteelevationsrelativetofuturesealevelrise.

ThebasisforanalysiswasanupdatedFEMAFIRMpanelissuedin2015whichsettheworst-casebasefloodelevationforthesiteat11feetforZoneVE,whichisazonethatissubjecttoinducedvelocityactionbya3-footorhigherwave.Sothat11-footbasefloodelevationisthestartingpointforoursiteelevation.

ThenwhatwedidiswetookalookatdatafromBCDCandNOAAforpredictedsealevelrise.Thatreportindicatedthatsealevelrisewaspredictedtoriseby16inchesby2050and55inchesby2100.

Sowhatwehavedoneiswehavedesignedthesitetothemid-centuryandwewouldintendtoemployadaptivemeasuresaftermid-centuryifsealevelriseoccurredbeyondthatorwhenitbecomesanissue.

Sothat16inchesby2050plusthebaseloadelevationof11feetgivesusastartingpointof12.3feet.ThenwewentwiththeBuildingCoderecommendationfor2feetabovethatsoourminimumfinishedfloorelevationforthesiteis14.3feet;so3.3feetabovethebasefloorelevationof11feet.Weareactuallyacoupleoftenthshigherthanthat,weareat14.5feet.

InadditionwehavetheBayTrailaroundtheperimeterofthesite,whichwearealsosettingat14.5feet;theBayTrailwhichconnectstothewharfpark.TheBayTrailwillbeat14.5feet.Currentlythewharfsitsatanelevationofapproximately13feet.WiththelandscapingimprovementsthatJustinmentionedwearegoingtobeplusanother18inchesto24inches,whichwillputus14.5feetto15feet.

Mr.Affadded:Exceptforatthewatersidepart.

Mr.Whiteagreed:Correct.Thepublicimprovements,BayTrail,themajorityoftheparkarealsoatthe14.5footelevation.

BoardMemberComeriohadaquestion:IsthereareasonwhythatpieceattheBaysideislower?I'mconfused.Whyisthat?

Idon'tknowhowdeepitis.Whyisthatprominent?Iamcurious,whyisitatalowerlevel.

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Mr.Affexplained:Theideaistokeepthis15footwidepromenadeattheBaysideatthatlowerlevel.Ithinkwearegoingtohaveaspartoftheimprovements,intherangeofimprovementswearegoingtohaveanadditional6inchesofconcretetoppingslabontopofthat,soitwillgetraisedupalittlebit.

Partofthedesignideafortheparkwastohavethisraisedsectionsitatthehistoricfootprintofthewharfwarehouse.Oneelementofthatisitmarkingthehistoricaluseofthesite.

Mr.Fippinadded:Thepromenadekindofmimicstheexistingwalkwaybetweenthewharfandthebuilding.

Mr.Affcontinued:Idon'tknowfromthepointofviewofsealevelriseifthereisaproblemifweget55inchesofsealevelrisein50yearstherewillbesomeovertoppingofthatslabonthatedge.

Mr.Livingstoncontinued:Ithinkthemainideawastocreatesortofanactivepromenadealongthewaterfrontwherepeoplecouldwalkandstrollandbasicallytakeadvantageofaccessdirectlytothewaterandbehindthatcreatethesesortofdifferentelementsthatwouldfocusondifferentusesoftheland,againwithinthebuildingfootprintoftheexistingwarehouse.Soitwastotryandcreateapromenadethatwouldbecomplementedbywhatwecommonlyrefertoasroomsthatarebuiltwithinthefootprintthatwouldbemorepassiveuse.

BoardMemberBattaliocommented:Idohavesomequestionsorcomments.Letmejustgiveyouaheads-uponacoupleofmythoughtsandwecanaddressthemwheneveryouwant.

Firstofall,the16inchesandthemid-centurytimehorizonareconsistentandmaybealittlehigher,the16inchesisalittlehigherthansomeofthemorerecentguidelinesandsothatisfinebutthemid-centurytimehorizonseemsalittleshortforadevelopmentthatwillprobablybetheremuchlongerthanthat.

SoIguessfromthatperspective,giventhat16inchesisalittlehighformid-centurywithrecentguidance,theactualamountisprobablylowbecauseyoureallyshouldbelookingfartherintothefuture.Alotofwhatweareseeingnowispeopleusingsomewherearounda3footvalueofsealevelrise,whichissomewhereinthe2070to2100ormaybeevenalittlelaterthan2100timeframe.Maybeitishighbyalittlebitbutthatisthewaytheseaisgoing.

Sothatconcernsmealittlebitthatyouareusing16inchesandjustifyingthatas2050,whichIthinkisbothlowandsoon,inmyview.

Mr.Whiteclarified:Weareusingthe16inchesplus2feet.

BoardMemberBattalioreplied:Yes.Idonotknowwhereyougotthe2feetbutthegoodthingaboutaddingthose2feet,whichisprobablysomethingyoudidearlyonwhichisgreat,asanengineerIthinkthatwassmart,butyouarestillacoupleoftenthsofafootorhalfafootshyofadding3feetplussomesortoffreeboard.

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Youknow,it'sfunny,whenwedesignbeamsandthelikeweusuallyfigureoutwhatweneedandover-designalittlebit.Ithinkfreeboardisnotabadidea,evenifweareaddinginsealevelrise.ThereisnotsuperclarityinthepracticeonallthatbutIwouldassumefromwhatIhaveseenthata3footsealevelriseasadesigncriteriawouldbeconsistentwithwhatIamseeingelsewhereintheBayandthensomeleveloffreeboardabovethat,whichmeansthatyour14.3isalittlelowbecause11+3+1wouldbe15.Nothingisthatprescriptivebutthatismyfirstthought.

Thesecondthoughtistheshoreelevationawayfromthewharfisat8feet.IguessthatisNAVDormeanoverthewater,whichiskindofclose.Sothatmeansthatpartoftheshoreisover-toppedwitha100yeardesignoraFEMAfloodeventrun-upof11feet.Sothatmeansyouhavewaterrushinglandward,sothatneedstobeaddressed.

Mr.Whiteanswered:Right.AndIthinkSGHhassomeimprovementsthattheyareproposing.Theycanspeaktothatinamoment.

BoardMemberBattaliocontinued:OntheadaptationwearereallylookingforalittlemoredetailthanwhatIhaveseensofar.Maybewewillhearaboutthatintermsofhowyouadapt.Ithinkthereisareferencetoawallontheedge,whichisoneadaptationstrategy.Butaproblemwithawall,especiallytheedge,isthatitisovertoppedandthenyouhavewaterontheothersideofthewall.

Whatsomepeoplearedoingishavingaplacewherethewatercanovertopandrunback.Theadaptationstrategyshouldactuallylooklikeitfitsandhavesomesortofconventiontoitsothatitlooksfeasible.Nottosayitisnotbutwedonotknowwhatitis.Justsayingthereisawall,inmyminditisawall,block,drainageone-way;ifitisovertoppeditcannotgetout.Anditismorelikelytobeovertoppedifitisseaward.Andithastobehigher,whichobstructstheviews,whichinmymindmeansthat50yearsfromnowitmightnothappen.

Mr.Livingstoninquired:Whenyousuggestthatweusethe3footcriteriaasadesigncriteria;areyoutyingthattoanyparticularperiodoftime?

BoardMemberBattalioexplained:Yes,Iwouldsaythatthereisariskthatcouldbeachievedorrealizedbyatimeframesomewherebetween2070or2130.Butdonotholdmetothat,Iwouldhavetolookatthecurves.Wealltalkaboutwhatisgoingtohappenatcertaintimehorizonsbuttheotherwaytolookatitistotakeacertainheight,thenyouhaveaverywiderangeofpotentialtimehorizonsdependingonwhatoccurs;wedonotreallyknow.

ButwhatIamseeingisthat-andthisisconsistentwithwhattheECRBhastoldotherfolksbeforeyouall-isthatthe3feetseemstobereasonable.Itisthemid-rangeprojectionfromtheNationalResearchCouncil2012report,whichwasadoptedbythestatein2013,theOceanProtectionCouncil,isabout3feetbytheyear2100atthemid-rangeprojected.Sothatiskindofwherethe3footcomesin.

Butifyoulookatsomeofthenewguidanceorothernumbersorthenewinformationthatisnotguidance,thatmaynothappenuntillater.Andthereisalwaysawhat-ifkindofworstcaseandthenitcouldhappenalotsooner.Icannotbemorespecificthanthatintermsoftiming.

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Mr.Affaskedforclarification:Whenyousaid11+3+1,isthe1feetfreeboard?Whatisthe1?

BoardMemberBattalio:Yes,Iwasthinkingfreeboard.IthinkonethingtolookatiswhatFEMArequiresofthefinishedfloorelevationorlowerstructuralmember,whichwouldbeyourconditionatsomefuturetimewithcertaincriteriaandwhetherornottheyactuallyrequirefreeboard.

TheotherpointaboutafreeboardisonasitelikethisIamsurethereisgoingtobeslopesandmaybeevensomeuncertaintyatcertainplaces.

Mr.Aff:Becausewewouldbeathalfafoot.Weareat14.5forthoseelevations.

Mr.White:Isyourrecommendationforthe3feetplus1footoffreeboard?IsthatforthebuildingelevationortheBayTrailorthewharforalloftheabove?

BoardMemberBattalio:Thesearemycomments,IamnotsuretheBoardhasactuallyprovidedyouarecommendation.Thepublicaccessareacanaccommodatesomeovertopping.Oneoftheadaptationmeasurescouldbetocloseitduringanextremeeventinthefuture.Alotoffolksarelookingataccommodatingsomeofthefloodingintheshorelinebandthatisalsousedforpublicaccessandrecreationalviewing.

ChiefofPermitsJaimeMichaelscommented:TheCommission'scurrentpoliciesonpublicaccessdorequirethatitremain,toparaphrase,usable,eveninextremefloodingsituations.Thosepoliciesmaychangeoverthenextfewyearsbutwewouldwantthispublicaccesstoremainusable.

BoardMemberBattalioasked:Evenduringa100yearevent?

Ms.Michaelsreplied:Ideally.Itmaynothappenbutideally.Thatiswhatweareadvising.Andweknowthatwehavesomeworktodotomakesureitisapplicable.

BoardMemberBattaliocontinued:Inmymindthereissomerelaxationofdesigncriteriaforpublicaccessifitisonlyoccasionallyimpactedandstillreusable.

SeniorEngineerMontescitedpolicy:PolicyNumber5ofthepublicaccesspoliciesoftheBayPlanreads:

"[p]ublicaccessshouldbesited,designed,managedandmaintainedtoavoidsignificantadverseimpactsfromsealevelriseandshorelineflooding."

Ms.Michaelsadded:It'sthegoal.

Mr.Whitecommented:Theshorelinetrailcouldeventuallybecomealevee.Itcouldberaisedtoprovideprotection.

BoardMemberComeriospoke:Yourplanshowsthepromenadeatalowerelevationandyouneedbeawareofaccessanddesignissuesasyouuseitforpedestrians.Thiswillaffectallofyourotherdesigncriteria.

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RegulatoryDirectorBradMcCreacommented:ItwouldbehelpfultogettheBoard’sadviceonhowmuchflexibilitywehaveatthewharf’sedgeforpotentialelevations.

Mr.Yaocontinued:SGHdidasiteinspectionanddidsomeengineeringassessmentsoftheshorelineprotection.Iwilladdresstheshorelineprotectionthatexistsnow.

Theexistingriprapcanbedividedintothreeareas.Thefirstareaisdirectlyunderthewharfanditiscategorizedas,“light”;thatis,200poundsorless.Ifyougonorthwestyouhaveprettybigriprap;one-quartertooneton.Thesoutheastsidealsohasthissizeofriprappresent.

Themostexposedareaistothenorthwest.Theslopesinthisareavaryabit.

Mr.Montesasked:Areyoudescribingthedikebeingusedasshorelineprotectionasriprap?

Mr.Yaoreplied:Yes-correct.WeranawaveanalysisandthebathymetryisbaseduponNOAA’sDigitalElevationModel(DEM)forSanFranciscoBay.

TheCaltransShorelineManualrequiresprotectionofalightorsmallsizeriprapforthesite.Wehavedeterminedthattheriprapattheexistingsiteisadequatefora100yearstorm.

BoardMemberBattalioobserved:Youhavetwodifferentconditionshere;youhavetheshorelineandyouhavethewharf.Atthesoutheastpartoftheshoreyouarelookingatitmorestructurallyfromanerosionprotectionperspective.Thequestionthengoesbacktothefloodmanagementforthestructuresontheshore.

Mr.Yaoreplied:Ourscopeofworkinvolvesprotectingtheriprap.

BoardMemberBattalioadded:Iftheprojectreliesontheshoreprotectionthroughitsprojectlifeitalsoneedstoconsidersealevelriseandtheincreasedovertoppingpotential.Structuralfailurepotentialneedstobeaddressedifthesoilbehinditismobilized.

Wewouldalsoexpectthegeotechtotakealookatthedifferentslopestoseehowstableitmightbe.

WhateverdesigncriteriaisusedfortheBayTrailshouldalsoextendtotheaccesscorridorweseeherethatgoestotheshoreline.

Mr.Yao:WewillcertainlyconsiderthevariouscommentstheBoardhasmaderegardingelevations,wavesandassociatedriskswhendoingouranalysis.

BoardMemberBattalioadded:Itseemsthatthewaterisrelativelydeepsotheaddeddepthofsealevelriseshouldnotaffectyourwind-wavegenerationoryourtransformations.Butitdoesaffecttheelevationofthetotalwaterlevel,thewaverun-up,becausewhateveryourrun-upvalueis,itisnowonahigherpeg.Soitdoesrelatetothecrestofthestructureandthepotentialforerosionofthesoilbehindthestructure,whichisactuallypartofthestructuralperformance.

Mr.Yaoreplied:Yes,Iunderstandthat.

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BoardMemberBattaliocontinued:AlsotheFEMAworkispublicnow,theydidpublishmodelwaveheightsandwaterlevelsandstuffsoyoucouldalwaysjusttakealookatthat,althoughIhadnocommentonyourmodeling.

Mr.Yaoanswered:Althoughthecriteriahavedesignforit,thesitehashistoricallyneverrecordeda100-yearstormasyet.

BoardMemberBattaliostated:IthinkIunderstandwhereyouaregoingwiththat.IdonotknowtowhatresolutiontheFEMAanalysiswasdoneandtowhatextenttheyconsideredthewavecrestelevationorthewaverun-upatthewharf,whichisdifferentthantheshore.Thatwouldbeuptoyoutoevaluateifyoufeltitwaspertinenttoyourcriteria.

Mr.Yaocontinued:ThedesigncodewefollowisCaliforniaBuildingCode2013,ASCE61-14.ASCE61-14isSeismicDesignofPiersandWharves.Weusethemasareferenceandnotadesigncode.AndthenASCE7-10,everybodyknowsthatistheloaddesigncriteria.AndthenNCHRP611,thatiswhatENGEOusedfordesigningtheseismiccriteria.Sowehavejustfourdesigncodes.

Mr.Yaowentintovaryingdetailandexplanationofdifferentcodesandcriteriausedfortheproject.

Mr.Yaostated:Forseismicloadweused100percentinonedirectionplus30percentintheotherdirection.Wealsolookedatkinematicload.TheCaliforniaBuildingCodeallowedustocombinethemtogether.

BoardChairBorcherdtasked:SowheredoestheDSMsitwithrespecttothefailurecircle?

Mr.Yaoexplained:TheDSMissittingoverherebutthereisamuchbiggercirclebehinditifyoudonotviewtheDSM.ButthiscircleassumestheDSMhasalreadyoccurred.

BoardChairBorcherdtinquiredfurther:IsthereevidencewithrespecttohowyouexpecttheDSMtorespond?Anumberofdifferentthingscouldtranspire.Howdoyouexpectittorespondifitexperiencesalargeearthquake?

Mr.Affreplied:Sothesizethatwehavegivenit,ouranalysisindicatesthatitisgoingtodisplacelessthan4inches,thesoilbehinditaswellastheDSMitself.

BoardChairBorcherdtcontinued:TheDSMisalargemassthatismuchdenserthanthesurroundingsoftsoil.Fromonepointofviewitcouldreflectseismicenergyinthesensethatasseismicwavescomein,ifitisalargeenoughstructureitislikegoingfromsoftsoiltohardrock,therewillbeatendencyforittoreflecthigh-frequencyseismicenergy.Sothequestionis;howwillthatmoveasthegroundarounditmoves?

Mr.Yaoreplied:Ihaveworkedonseawallsinotherprojects.Thatisaverycommontechnologynow,designedmethodology.Ithasinterconnectedbuttresses.

Buttresseshavebeenacommonwayofdealingwithittolimitthemovementoftheground.

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Mr.Espinosaadded:DSM,wehaveuseditonTreasureIslandandotherprojectsthatwehavepresentedtotheECRB.Basicallyitisastaticmodelwhereyoulookatitintwo-dimensionalasagravityrole.SowebelievethatitwillbeasimilarcasebecausewehavesimilarsoilwiththeyoungBaymud.

BoardChairBorcherdtopined:IwouldthinktheDSMwouldbestrongerthanthesoil.

Mr.Espinosaagreed:Correct.Buttheincoherenceofthewaves,theyarenotstrongenough.Thatincoherencedoesnotcreateashearissueonthebuttressandthebuttresswillnotbreakbecauseofthat.

BoardMemberHolmesinquiredabouttheDSMaswell:ThesoilinfrontoftheDSMiswhatismoving?

Mr.Affresponded:Thatiswhatismoving,yes.Sothesoilbehinditismovingmaybesomebutsignificantlylessthanthatsoilwhichismovinginfront.ButtheamountofmovementismuchlessthanwhatwepredictedwithouttheDSMbuttressbecauseweshortenedthefailuresurface.Wehavealotlessdrivingforceandweareincludingthepinningforcesfromthestructure.

Mr.Montesinquired:SoafteragroundmotionwilltheDSMcrackandthenyouhavetoredoitorwhathappens?

Mr.Espinosaexplained:Itisusuallydesignedforthedesignearthquakesoitwouldnotcrackunderthedesignearthquake.Thatishowthemajorityofthebuttressesaredesigned.InthiscasewedonotforeseeanyareaswhereyouaregoingtolosetheshorelineandtheDSMisgoingtostaycantilever.

Mr.Fippinstated:SotherearefourdifferentchecksthatFHWArequiresthatendupdeterminingthewidthofyourbuttress.Thatishowwecomeuptothe1-to-1depthtowidthratio.

Mr.Espinosaadded:Itisdesignedfortheearthquakeanditisdesignednottocrack.

Mr.Fippincommented:Theperformanceofthesoilinfrontofthewharfisreallythecriticalsituationhere;whichis,howmuchisthesoilgoingtomovebelowthewharf?WecanmakethatDSMbuttress300feetwideanditwouldnotmakethesoilbelowthewharfmoveanyless.

BoardMemberHolmesstated:Iunderstandtheprocess.IamnotfamiliarwiththedesignofDSM.

Mr.Affresponded:Right.MyresponsetothatwouldbethatweareviewingthisfromtheperspectiveofprotectionofthethingsthatarebehindtheDSMbuttress;thatisaslopestabilityissue.Andtypicallyslopestabilityorsoilsthatarenotliquefiablesoilsisperformedatthesameseismiclevelthatthestructuresthatareaffectedbytheslopeisperformed.

BoardMemberGilpinstated:Pseudo-staticanalysisofslopestabilityisusuallyafactorofsafety1.1or1.2.

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BoardMemberHolmesobserved:Itisnotthefactorofsafety,itiswhatearthquakeareyouconcernedwith.

Mr.Yaocontinued:Somuchforthekinematicloadevaluation;wejustexplainedthemethodology.

IcametotheBoardandpresentedthesamemethodologylasttimeontheBrooklynBasin;themethodologyessentiallywasacceptedonthatwharf;andMr.Holmes,youwerethere,Iremember.SoIamgoingtoskipthisnow.

Inertialloadsareessentiallyanon-linearpushover.Wehavethreepointstodefinetheperformanceofthestructure:oneisinitialyieldingofthestructure;thesecondisLevel1performance,thatisrequiredforimmediateoccupancy;andLevel2iswhenthestrainlimitofthematerialisreached,theconcretestrainlimitasdefined.Atthatlimittheconcreteisgoingtobecrushedsowearegoingtostayawayfromthat.

Basedonthiswefigureoutthedemand.Thedemandisexplicitbecauseitisanonlinearanalysis.Itisanexplicititeration.Essentiallyitisthatweguessthedisplacement,wereachtheequivalentenergybehindthis.Itisaniterationprocessuntilthestiffnessisconvergedandtheysay,hey,thisisthedemand,thedisplacementdemand,andcomparedwiththecapacity,theLevel2displacementcapacity,whatisthedemandforcapacityratio?Thatisessentiallytheamount.

Wearestillinteractingwiththelandscapearchitect.Theinertialloadanalysisheavilydependsonhowmuchweightyouaddontopofthewharf.Ofcoursethelandscapearchitectwantstodogoodwork;theywanttomaketheparkbeautifulbutalsoaddalotofweightonit.

ButwhatIcanpresenttotheBoardtodayisthatbasedonthisanalysis,theinitialanalysiswithsomeassumptionsoflandscapedesign,whatwefoundoutisthatthisslopecomingdownhasripraponitandbelowtheriprapisabunchofgravelfilloverhere.Basedonthisanalysisthatlastfourrowsofthepilesattract80percentofthelateralloads.Thepilesinthefront,theyarejustgoingalongfortheride.Butthestressesareonthosepiles;thelastthreerowsarecritical.Theycouldpotentiallyshearoff.SothatiswhatIamtryingtosayhereisthatthiscolumn,20inchby20inchcolumn,plusanothertwoorthreerowsofpiles,arecriticaltotheseismicresistance.

Now,incasethelandscapedesignexceedsthecapacityofthewharf;thenwhatarewegoingtodo?Iamgoingtopresenttoyoutheanticipatedrecommendedoption.Wehaven'treachedaconclusionyetbutIwanttopresentit.

BoardMemberHolmesopined:Alsoyougetabigtorsionfromthat.Youhaveabigtorsioncausedbythefactthattheentireloadgoestothosebackpiles.Themassiswayoutheretowardsthemiddleandthenresistanceisallonthebackside.

Mr.Yaoasked:Youaretalkingabouttorsionfortheearthquakeintheotherdirection?

BoardMemberHolmesreplied:Yes.

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Mr.Yao:Wecounted100percent/30percent,then100percent/30percent;yes,soyouareright,thereissometorsion.Butthewharfislong,550feetlong,soallthose500-somepilesareresistingthistorsion.

Iagreewithyou,thecenterofgravityandcenterofresistancearenotaligned.

BoardMemberHolmesasked:Butstiffnessfortorsionisthesameasstiffnessforlongitudinal,right?

Mr.Yao:Thatiscorrect;Iagreewithyou,thankyou,butIhadtosimplifythepresentation.Thisiscoveredinour3Danalysis,100percentinonedirection,30percentintheotherdirectionand100percentinthisdirection,30percentintheotherdirection.

BoardMemberHolmespressedforclarification:Arethose4pilesessentiallymodeledthesameordoyouactuallyshowthatthatfirstpilealmosthasnolengthandthenthenextonehasalittlemore,thenextonehasalittlemore.Youaresayingthatloadistakenbythose4piles.Itseemsliketheloadwouldallbetakenbythefirstpile.

Mr.Yaoexplained:Thefirstpiletakesalotofloadbutkeepinmind,thosearerock.Thoseareripraprockssotheyareprettystiffresistance.Yes,thereisadistribution.Obviouslythiscarriesthemaximumloadsandthisisslightlyless,thisisslightlylessandthisisslightlyless.ButwedidseethesethreeformhingeswherethereisaLevel1hinge,level2hinges.Thejuryisstillout,arewegoingtoneedtheLevel2performance?ItverymuchdependsonhowmuchweightweputonitsoIamnotgoingtogiveyoutheconclusionasofyet,weareinteractingwiththelandscapearchitect.

BoardMemberHolmescommented:Iamfamiliarwithhillsideconcreteframesthathavethesameproblem;theuppercolumnwantstotaketheentireloadanditisveryhardtomakethemwork.

Mr.Yaoagreed:Youareright.

Anticipatedstructuralretrofitstrategies.ThisstrategyhasbeenusedinotherterminalsrightaftertheLomaPrietaearthquakesoitisapprovedandtrueandforthisprojectitisprobablytheeasiesttodo.Asweapproachthisweneedtohaveaconcreteoverlayontheexistingdeckanyway.Theconcreteoverlayisfordrainagepurposes.Thestormwaterrunoffneedstobedrainedtosomeplaceelse.AndalsotheBayTrail,youhavepeoplegoingbackandforthonthisplusthewaveslammingforcesandotherforcescomingalong.A5inchconcretedeckwithmaybesomecracksonitisbarelymakingit.

Whatweproposeisoneoftwostrategies.

Oneisthatyouhaveawarehousesittingoverhere,youhaveawarehousesittingoverhereandyouhaveanotherwarehousesittingoverhere.Thosewarehousesaregoingtomoveawaysowehavetheexistingpiles,thousandsofexistingpiles.Wecouldhaveaconcreteoverlaytotiethiswharftothebacksoallofthosepilesarehelpingtheselastfewrowsofpilestoresist;sharetheloadsandreducetheloaddemandonthosepilesandwharves.

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Orweignorethosepilesandjustdriveanewpileandtieittothedeckandsharetheloadandthisnewpilewearegoingtodesigntotaketheloads.Byanalysiswewillbeabletodesignit,makesurethatnoneofthewharfpileswillfail.SothatisthestrategyIlookforifwearegoingtomoveforward.

IftheexistingwharfdoesnotmeettheBuildingCoderequirementsIproposeoneofthetwostrategiesmovingforward.

BoardChairBorcherdtasked:Thelengthofthewharfis550feet,Ithink.That'salmostthewavelengthofaonesecondwavetravelinghorizontally,likeasurfacewave.Sohaveyoutakenintoaccountthedifferentialmotionsthatyouwouldexpectoverthelengthofthewharf?

Groundmotionscouldbehighononeendandlowontheotherendorviceversaasthewavepropagates.

Mr.Yaoanswered:Iunderstand.WedidthosethingsontheRichmond/SanRafaelBridge,ontheBayBridge.Butthestandardofengineeringpracticeassociatedwithwharvesandpiers,wedonotgetthatsophisticationandtheBuildingCodedoesnotrequireit.Thereisenoughstructuralconservatisminourapproachtoit.

Butmaybethereare56bandsandthemajorityofthebandsaregoingtohaveapile.Wehavenotchosenthepile,wehavenotdoneit,butaftertheLomaPrietaEarthquakethePortofOakland,allthosewharves,wewouldgobackanddrivenewpilesandtiethisbackandtheyarestillinuserightnow.

Therearethreewarehousesshownhere.Twowarehousesaretotallyonland.Thereisanotheronethatdoesn'tshowherethatistotallyonland.Oneissittingonthewharf.Sothosewarehousesaresittingonotherpilessotherearealotofpilessittingoverhere.IfIneeditIjusttiethiswharftothosepilesbecausethosewarehousescanberemoved.

Someofthepilesaregoingtobebadandwearegoingtorepairthem.Wearegoingtocoverthoseareas.Wherethereisseveredamagewearegoingtorepairthem.

Mr.Affspoke:ADSMbuttresswouldbebasicallyconstructedbydoingoverlappingcolumnsofdeep-soilmixingthatrunperpendiculartotheshorelinenorth/southingeneralandbasicallycreatecounter-fortsthatareinthegroundthathelptoresistsoiltryingtomovetowardsthewater.Itwouldgoalongtheentireshorelineband.Itwouldgoinbothdirectionsbeyondthewharftoprotectthelandbehindandincreasetheslopestabilityperformanceoftheentireshoreline.

BoardMemberComerio:Soarethosejustin-betweenthoseexistinglandsidepiles?

Mr.Aff:WewouldtrytocentertheDSMbetweenexistingpilesinthegroundandwewouldhavealayoutthatwouldminimizeavoidances;thatis60feetdeepby60feetwide.

BoardChairBorcherdtasked:WilltheDSMgointoBCDCjurisdictionzone.Willitbewithinthe100footshorelineband?

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Mr.Affreplied:Thebestperformancehappensifitoccursasclosetotherockdikeaspossibletomakethefailuresurfacesassmallaspossible,whichwouldpushyouwhereverthehighwaterlineisonthiscross-section.Youareprobablystartingsome30feetfromthebeginningofBCDCjurisdiction.

BoardChairBorcherdtadded:ThatisprettystandardtechnologyforinstallingtheDSM;ithasbeendoneinquiteafewplaces.

Mr.Affstated:TheydiddoalotofitatthePortofOakland.

BoardChairBorcherdtsurmised:Butjuststandingbackandlookingatthebigpicturenow,ifwethinkaboutthisfromaBCDCperspective,itseemstomethatbasicallytheprincipalthingthatistranspiringintheBCDCjurisdictionzonewillbetheconstructionoftheDSMzoneasazonetohelpresistlateralmovementorsoilfailureandcontainanymovementthatmighttakeplacelandwardofthat.Theotheraspectoftheprojecthastodowiththesafetyofthewharfstructureanditspublicsafetyissueassociatedwithahighoccupancyrateatdifferenttimes.Sofromanengineeringcriteriapointofviewitisimportantthatthepublicsafetyissuewithrespecttothewharf,thesealevelriseissue,andotherengineeringcriteriabeaddressed.

ConstructionoftheDSMwillneedtoprovideasmuchlateralresistanceaspossible.IamnotsurewhatotherinputyouwouldwantfromtheBoardwithrespecttotheconstructionoftheDSM.IamcuriousastohowtheDSMwillrespondwithrespecttothesurroundingsoilandifthereisanyhistoricalevidenceoranymeasurementsthathavebeenmadeinthepastwithrespecttohowaDSMresponds.

IraisethatquestionthinkingintermsofthesoftsoilsinJapanandtheartificialfillsandthequaywallsthatwereinstalledtoretaintheliquefiablesoils.ItturnedoutthataftertheKobeearthquaketheporepressuresdidreallybuildupprettyhighbehindthequaywallsresultinginsomefailures.IamwonderingwhetherthatsamekindofthingmighthappeninsomeinstanceswithrespecttotheDSM.Idon'tknow,thatisjustaquestion.

Mr.Espinosaexplained:MostofwhatwearetryingtoretainistheyoungBaymudfailuresordeepfailures,softsoilfailuresduetothelateralpressuresfromtheearthquake.WedonotexpectporepressurebuildupontheyoungBaymuds,whichismostoftheDSM.Thereisgoingtobesomepressurebuilduponsomeofthefillthatmightbepotentiallyliquefiable.ButinthoseareasweareclosingthecellsoftheDSM,whichhasshowninthesameearthquake,intheKobeearthquake,wherebuildingsthatwerefoundedonconnectedcellsofDSM,liquefactionwaspreventedunderneaththosebuildings,whererightinfrontofthatbuildingeverythingliquefiedandwentoffshore.Sothatisourschemeforthisshorelineprotection.

BoardMemberGilpinasked:Couldyoutalkabouttheliquefactionpotentialfortherockdike?Howdidyousetupthecharacteristicsforunderstandingit?

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Mr.Bradfordanswered:Thematerialidentifiedwithintherockdikewaseitherthepreviouslymentioned15poundmaxsizecobblesintermixedwithdredgematerialandyoungBaymud.Sotherewasnotanythingthatweidentifiedasbeingpotentiallyliquefiablewithintherockbankitself.

BoardMemberGilpininquiredfurther:Sothereisnopossibilityofsandorconcentrationsofthegranularmaterial?

Mr.Bradfordreplied:Theonlythingthatweidentifiedinanyoftheexplorationsalongthiscross-sectionwasthesortofteal-coloredclayeysand;anditwasonlyidentifiedinthefarthest-mostboringthatwasdoneactuallyoutatthetipofthewharf.Sowedonothavedatapastthewharfsoweconservativelyinterpolatedthatasbeingplainer.

BoardMemberGilpincommented:ButifyouaresamplingagravellylayeritisreallyhardtofindthesandlayerbecauseyouarepushinggravelinfrontofitorCPTs,whatever.

Mr.Bradfordreplied:Wedidgrabsampleswithintherockdike,wedidnotjustsimplycorethroughitandthat'showwewereabletoidentifysortofamatrixwithinthat.

BoardMemberGilpinasked:Itisapileofgarbage,right,basically?

Mr.Bradfordresponded:Sure.ButitwasdevelopedwiththedredgematerialthatwaspulledoutoftheincisionlayerwithintheyoungBaymud.

BoardChairBorcherdtcontinued:IwouldliketoaskBoardMembersiftheyhaveanyadditionalcommentsbutfirst,Brad,youraisedapointearlierandsoIwaswonderingwhatyouwouldrecommendintermsofwhatyouwouldliketoseecommentedonfurther.

Mr.McCreaexplained:Thequestionsthatareoutlinedinthestaffreportyouhaveinfrontofyou,onpage8,areagreatstart.

BoardMemberHolmesinquired:Whatdoyouknowaboutthepilesunderthelandsidewarehouse?

Mr.Yaoreplied:Thosearetimberpilesthatwereinstalledlaterbecausethestructures,thosetwowarehousesonthelandsidewerenotconstructedin1919butinthe1930sand1940s.

BoardMemberHolmesasked:Oneoftheretrofitschemesyouwouldhavetoinvestigateisthosepiles,right,becauseyouaregoingtotietothem?

Mr.Yaoreplied:That'sright,weneedtoinvestigate.Butthoseareburiedintheground.Thisisoneoftwoschemes.Ifweeventuallyadoptourschemewedoneedtoinvestigate.

BoardMemberHolmesadded:TheothercommentIhaveisInoticedinthewrite-uphereyouareusingaknowledgefactorof1onthepiles.

Mr.Yao:Ontheconcretepilesitis1.Onthetimberpilesitis0.7.

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BoardMemberHolmescontinued:IthinkyouhavedoneasgoodaninvestigationasyoucandobutIamnotsureyouhavecompleteknowledgeof1,whichimplieslikeanewbuildingwhereeverythingisinspected.Youhavegotallthismajordamage,youdonotknowwhatthelevelofdeteriorationis,soIamnotsureyouhaveperfectknowledgeofthepiles.

Mr.Yaoexplained:Well,thereareguidelines.Wedidconcretecorings.Wedidpileratings.Itwasactuallyconservativebecauseweignoredtheshotcrete.Ithinkweknowenough.Wehavetheoriginaldesigndrawings.Wecansubstantiatewhywearesayingit.

BoardMemberHolmesclarified:Itisnotwhattherebarandconcreteis,itishowmuchdeteriorationisthere,ismyconcern.

Mr.Yaoexplained:Butthetruthisweignoredthe6inchshotcretesothatissignificant.Inmyviewitisconservativeinourassessmentofthepiles.Thatshotcrete,itdoescontributetothestrengthofthepile,especiallyinthosehingeareas.Mostofthosepilesdohave4to6inchshotcretearoundit.

BoardMemberHolmes:Ithinkthatadvantagemaybedifferentthanaknowledgefactor.

Mr.Yaostated:Wecouldgotheotherway,countingfortheshotcreteandreducetheknowledgefactor.

BoardMemberComeriocommented:Thisisaverythoroughpresentation.TheonethingthatisabsolutelymissinghereisaplanoftheareathatiswithintheBCDCjurisdiction,whichiswhywewereaskingallthosequestionsattheendaboutthoselastfewslides;graphicquestionscameupbecauseyouneedtoseewherethoseDSMsareplanned.Youneedtoseewheretheysitrelativetothoseexistingpilesorthatexistingbuildingwhichisbeingremoved.Wearenotseeingthoselayersandithasmadeithardertounderstandsomeofyourpresentation.

Itisreallyaminorpointbutitwouldreallyhavehelpedtohavehadthat.Itwouldhavehelpedtounderstandhowthepromenadeworksandconnectsattheend.LookingatthesedrawingsandIknowyouarenotveryfarwiththedesignyet,Iunderstandthat.Butjusthavingasenseofhowthatalllinkstothelandattheedgeofthepropertywouldbehelpful.Sojusthavingthat,aplanviewwithallofthoseelements,includingtheonesthataretoberemovedandtheonesthataregoingin,andseeingthoselayerswouldbeveryhelpful.

Mr.Livingstonstated:Wewillbringsomethinglikethatbacktoyounexttimeweseeyou.

Mr.Montesadded:PartofitwasmymistakebecauseoriginallytheyweregoingtopresentalotofthelandscapingandthenIthoughtthatbecausetheECRBwantedtozeroinontheseismicandfloodingthattheywouldconcentratemoreonthatportion.

BoardMemberComerioexplainedfurther:Thatplanhelpsusunderstandtherelationships.

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Mr.Affaskedforclarification:Justtoclarify,youarenotaskingforthelandscapeplan,youareaskingfortheplanviewshowingwheretheDSMbuttressis,wherearethepiers,wherethepilesare,wherearethenewproposedpilesgoingtobe,wherethefourcriticalrowsofpilesare,allthosethings.

BoardMemberComerioadded:Wherethingsaregoingtoberemoved.Obviously,asyougoforwardwiththedesignyouwouldhavethelandscapedesignontopofthat.Inordertounderstandsomeoftheseismiccriteria,understandingthefullbaselayerandplanaswellasin-sectionisveryhelpfulbecauseyoucannotalwaysseehowallthepiecesrelatetoeachother.

BoardMemberDornhelmcommented:Idothinkithasbeenverythoroughanditwouldbewonderfulwhentheoldwarehousefacilityfinallygiveswaytoadelightful,urbanwaterfrontasyouareproposing.ButmyonlyreservationhastodowiththeearlyassumptionoftheLevel2criteria.Thatyouarecomfortablethatwhenyousay"nocollapse"doesthatmeaninsuchaneventthestructureisalossandthendoesthatmeanthedevelopmentwilltakeontheresponsibilityofcleaningthesite?Itisallpublicusesthatarebeingriskedinthiscaseandwewanttoknowifsomethingwillcomebackafterthesiteiscleaned.OrcanyourepairthewharfifithasgonetoaLevel2?

Mr.Yaoreplied:Everymajorstructureisfacingthatquestionrightafteramajorearthquake.Obviouslythedevelopmentisgoingtohireaqualifiedengineertogobackandinspectthemandseehowmuchitisgoingtocosttoretrofit/restorethestructure'sintegrity.Howmuchtojusttearthemdownandrebuildanewone.Iwanttosaythatthemajorityofthewharvesandpiersweexperiencetheformer,goingbackandretrofittingthemandrestoringthemifyouhaveanearthquakesimilartotheLomaPrietaEarthquake.

BoardMemberDornhelmstated:Thatisyourdesignearthquake.ItismuchhigherthanLomaPrieta.Soyouaredesigningitfornocollapse.

Mr.Yaoexplained:Thedesignofthepilesisveryclosetothemoderndesign.SoIthinkthehingedoesperformduringamajorearthquakeandprovidealotofductilitytothestructure.Ofcourse,ifweadoptoneoftheretrofitoptionsIthinkitcansustainamuchhigherearthquakeandstillbecomerepairableinthefuture.Butitisreallyoutofourscopetoreallyassessreparabilityofthewharf.Iappreciatethecomment;asoneofthepublicIwanttoknow.Butatthisstagewearelookingatjustonepoint.Abigearthquakelineisonepointandwedesignforitandmakesurethepublicissafe.

BoardMemberHolmesasked:Theelevationhereofthebeamsundertheplatform.Idonotseeanypositivereinforcingcontinuous.Areyouassumingthetopfixityofthepilesoristhatapininyourmodel?"

Mr.Yaoexplained:Thebeamisextendingtypically18inches.

BoardMemberHolmescontinued:Ijustdonotseeanybottomreinforcing.Itisbentuptobecomenegativereinforcing,atleastinthis.Itisasmalldiagram.Butistherebottomsteelgoingrightthroughtheconnect?

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Mr.Yaoreplied:Therearesome.Thereareabandofrebarstherebuttherearesomecontinuousspotsalso.

BoardMemberHolmesinquired:Andareyouconsideringthediagonalsections?

Mr.Yaoreplied:No.Thecoverorthetransferisignoredfornowinouranalysis.

BoardMemberHolmesopined:Thatcouldbeamistake.

Mr.Yaoanswered:Butitisconservative.

BoardMemberHolmesdisagreed:Idonotthinkthatisconservativeatall.Caltransfoundouttheyhadsomedecorativechamfersonthecolumns.Theythoughttheywouldfalloffinanearthquakeanditturnsouttheyformedahingerightatthebottomwheretheydidnotexpectit.Rightbelowthechamfer.SoIwouldtakealookatthat.

Mr.Yaoreplied:Iwilltakealookatthat,okay.Iwillletyouknownexttime.

BoardMemberComeriocommented:Asthedesignisdevelopeditisgoingtobeimportanttoustounderstand.Thecriterionislifesafetybutwhatistheegress?Aretheregapsbetween?Dowehaveanygapsopeningupinthewharf?Dowehaveanygapsopeningupbetweenthewharfandthesoil?Howdopeoplegetoffthewharfintheimmediateaftermathofanearthquake?Whatdoyouanticipatethestructuralmovementsothatwecanbeassuredthatthereissafeegress?

Mr.Yaoreplied:Ithinkwearepreparedforthat.BecausethelasttimeyoumadethesamecommenttoourcompanyregardingtheAlamedaLandingProject.

ButthisprojectisdifferentfromAlamedaLandingbecauseItalkabout4inchdisplacement,literally4inchdisplacement.Themaximumgapyoucaneverfindis4inchessopeoplecanjuststepoverthis4inchgap;egressisnotanissue.AlamedaLandingisamuchlargerdisplacement,16inchesor20-someinches.Thatpotentiallyhasafallhazard.Butwearetalkingabout4incheshere.

BoardChairBorcherdtcontinued:IftherearenofurthercommentsIthinkwewouldliketothankyouforyourclearpresentationandyoureffortanddesiretocomebeforetheBoardandreceivecomments.Wehopeourcommentsarehelpfulandwelookforwardtoseeingasuccessfulproject.

Mr.Yaocommented:Ihaveaquickquestionhere,Chairman.WethinkthatwegavetheBoardanintroductionfromanengineeringperspectivesopossiblythenextpresentationwillbeshorter.Doyouwantustogothroughthesamepresentationordowejustmakeitmoreconciseinresponsetoyourcomments?

BoardChairBorcherdtresponded:TheBoardactuallyprovidesadvicetoBCDC.Weareaskedtofocusontheengineeringcriteriathatwillbeusedfortheproject,withaparticulareyetowardtheBCDCjurisdictionzone,safetyoffills,andvariousBCDCpolicies.

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Inthatregard,asImentionedearlier,itseemstomethatthecriticalaspectsofthisprojecthadtodowiththesafetyofthewharf,especiallyfromthepointofviewofpublicsafety,theimpactofsealevelrisewithrespecttothedesigncriteriabeingapplied,andthenalsotheresponseortheusefulnessoftheDSMtotheassignedpurpose,whichistorestrainpotentialfailuresalongtheboundaryofthedevelopmentzone.

SoifyouweretocomebacktotheBoardthenitwouldseemtomethatthiswoulddependonBCDCwithrespecttowhatyouwantustoprovideadditionalcommentsonthecriteria.Butitdoesseemtomethattherearestillanumberofissueswithrespecttothesafetyofthewharfthatarestillinthedesignstage.Usuallywhenweseeaprojectat35percentweusuallyseeitlater.Butthisprojectisalittlebitdifferentfromthatpointofviewandsoitisreally,Ithink,dependsonwhatBCDCwantsfromtheECRB.

Mr.Montesstated:MyviewoftheassessmentthatyouprovidedtodayisyouprovidedsomegoodinputregardingMary'scommentsontheoverlaysofdifferentlandscapeversusseismiclayoutaspects.Billraisedthequestionsaboutthechamferzonewherethehingeonthepilescandevelop.Sothosearequestionsthatcanbeansweredatthenextmeeting.

Alsokeepinmindthatthegeotechswerenotheretodaysoitwillbegoodtohavethemgivetheirinputonthefullgeotechnicalreview.

Regardingthesealevelrise,IthinkthatBobBattalioandRichardDornhelmraisedsomeverygoodpointsabouttheelevationofthewharf,whethertheBayTrailwillbecomealeveeinthefuture.

BoardMemberBattaliocommented:Ifeltthatalongertimehorizonandagreateramountofsealevelrisewouldbemoretypical.Somethingontheorderof3feetwouldbegoodtoaddresswhetherornotthereisafreeboardincluded.IpersonallylikefreeboardsbutIamsureyouhaveotherconsiderations.

Theadaptationstrategyshouldhavealittlemoredescriptionsothatwewouldunderstandwhattheimplicationsaretothepublicaccessareaaswellastheefficacyofprotectingthedevelopment.

Mr.Montesadded:Onemorenote,Bob.TheStateisabouttopublishthenewguidanceonsealevelriseandperhapsyouaremorefamiliarthananyoneelseaboutthat.

BoardMemberBattalioreplied:Iknowsomethingaboutit.Iamnotinvolvedinthedecisionprocess.IdonotbelievethatisgoingtocomeonuntilJanuaryof2018.IwilljustsaywhatIhaveheardisthattheprojectionsaresimilartoormaybeslightlylowerthantheexistingguidanceforthemediumandhighcurve,thelowcurvepeoplearenotreallypayingattentionto.Butrelativetotheguidancecitedinyourapplication,thenewguidancemightbealittlebitlowerbutthenthereisthisveryhighpotentialthatismuchhigher.

Mr.Montesremarked:After2050.

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BoardMemberBattaliocontinued:Soitissomewhatconfusing,Ithink,soitisgoingtobeinterestingtoseewhatcomesoutoftheactualpolicy.Iwouldsaythatthe3feetissomethingthatIamstickingtowhatwehavebeensaying.Ithinkthe3feetisareasonablecriterionfordesignandthenanadaptiveplanforsomethingontheorderof5to6feetwouldbereasonable.Idonotknowthatthe9to10feetthatpeoplearetalkingaboutissomethingthatwearereadytorecommendpeoplehavingtodesignforatthispoint.

BoardChairBorcherdtadded:Comingbacktoyouroriginalquestionwhichwastalkingaboutwhetheryouneededtogothroughthefullpresentationagain.IwouldthinkthatfromthepointofviewofefficiencyofbothyourtimeandourtimeIthinkthebasicswillbesufficient,sinceyouhavealreadypresentedtheoverallpictureataprecedingmeetingIwouldthinkyournextpresentationcouldbemuchbrieferandaddressedtoonlythosespecificissuesthatareofrealsignificancehere.Ithinktheissueswithrespecttothisparticularprojectareprettyclear.

Ms.Michaelscommented:IwanttoasktheBoardsomething.Ican'trememberifwehavebeenbringingriskassessmentstotheBoardforsealevelriseforyoutoseeandconsider.Thiswillbethesubjectofamajorpermitapplicationandforallmajorpermitapplicationstheprojectproponentshavetoprepareaformalriskassessmenttoaddresssealevelriseandfloodingfortheprojectsite.AndIjustcannotrememberatthispointifwehavebeenbringingthoseformallytotheBoard.

Mr.Montesstated:Wehavebroughtitonceortwice;onceforTesoro.

Ms.Michaelscontinued:Wewillgobackandfigureoutwhetherornotwehavebeenbringingthemtoyou;andifwedothatwouldmaybebeapartofthenextpresentationifoneispreparedbythattime.

BoardChairBorcherdtasked:Fromapermitpointofviewdoyouseeanyoftheengineeringcriteriathatneedanyadditionalcomment?

Ms.Michaelsreplied:Intermsofwhatmightbeintheriskassessment?

BoardChairBorcherdtanswered:Yes.

Ms.Michaelsexplained:Well,becausesealevelriseisanissueatthesiteandtheprojectwillinvolvesomefillintheBaytheywillhavetoprepareone.

AtaminimumwehavetoreceivethatandconsideritandIjustcannotremembernowifwehavebeenbringingittoyou.

BoardMemberBattaliostated:Iwouldliketoseeit;Ihavenotseenit.Ithinktotheextentthatweareadvisingonsealevelrisecriteriaitwouldbehelpful.

Ms.Michaelsreplied:Ithasnotbeenpreparedyetbutwewillbeworkingwiththeprojectproponentstodothat.

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Mr.Livingstoncommented:WoulditbepossibletogetthetwoBoardMemberswhoarenotpresentandhavethegeotechnicalexpertise,toprovideuswithsomewrittencommentsorinputsonthevariousreportsandotherdocumentationthatwehavesubmitted?AndthereasonIammakingthatrequestisitwouldbeveryhelpfultousifweknewwhattheconcernsoftheBoardwereaswemoveintothisnextstageofdesigningourmitigationsolutionstotheproblemsthathavebeenidentified.Justtomakesurethatwearenotmissinganythingfromtheirperspective.

Mr.Montesresponded:Iunderstandyourconcerns,butunfortunatelyweareboundbythelawsthatprecludeindividualsorafewmembersoftheECRBfromgivinginputunlesstheyhappentobealltogetherinapublicforum.

Mr.Espinosaasked:Weretheyabletoreviewthematerialssincethematerialwasgiventothem?

Mr.Montesexplained:No,sincetheywerenotgoingtoparticipateinthemeeting.Thereforetheywerenotabletoviewthematerialunlesstheycommittedtobeinthemeeting.

BoardChairBorcherdtadded:WehavetomeettheOpenMeetingActrequirements.ThisisapublicmeetingsobasicallyanyinteractionwiththeBoardMembershastotakeplaceinapublicforum.

Mr.Montescontinued:Wehavetohaveanotherpublicmeetingwheretherewillbethegeotechsinvolvementandthentheinformationwillbedistributedtoallofthemforanotherpublicmeeting.IbelievethenextpublicmeetingwillbeinAugustbutIwillhavetodouble-checkonthat.

BoardMemberGilpinasked:Coulditaddressjustthegeotechaspectsoftheproject?

Mr.Montesreplied:Forthenextmeeting?

BoardMemberGilpinanswered:Iftheywantedtobringjustthegeotechpartsofwhatwelookedattodayordoesithavetoopenupthewholeproject?

Mr.Montesresponded:No.Wehavetogatherupthewholeteam.

BoardMemberGilpinexplained:Iunderstandthat.Butitcouldbeanagendaitematthenextmeetingthatisjustfocusedongeotechissuesforthisoneproject,inadditiontotheotherprojectthatwearegoingtolookat.

Mr.Montesagreed:Sure,yes,wecanhavethegeotechaspectbutyouallhavetobehere.

Mr.Fippincommented:Ithinkthattheprimaryconcernisthatiftherearesignificantcommentsthatrequireathirdvisit.IbelievetheApplicantwouldliketoshortenthetimeperiodofreview.

Mr.Livingstonstated:RightnowBCDCisbasicallyourcriticalpathsoweareveryfocusedondoingtheanalysisthatECRBbelievesisimportanttosupporttheproposalthatwearegoingtobemakingfromaplanningandsafetyperspective.

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WearealsoveryinterestedingettingtheinputfromtheBoardsothatwecanprepareourformalapplicationandgetthatsubmittedandgettheprocessgoingfortheformalconsiderationofthatapplication.

WewerehopingtobeabletogetinfrontoftheECRBatthismeetingandgetyourfullinputsothatwecangobackandsubmitourformalapplicationbasedonthatinputwiththeadditionalworkthatwearegoingtobedoingasdescribedbySamandJeff.ButIdon'twanttowaituntilaftertheAugustmeetingtoputthatformalapplicationtogetherandgetitsubmitted.

Mr.Monteshadasuggestion:Ihaveanidea.TheAlamedaLandingthatcametotheBoardinMarch,youcanlookattheminutes.YoucanlookatJimFrench'scommentsregardingtheDSMandgeotechnicalaspectofit,sothatcouldgiveyouanidea.

Mr.Livingstonagreed:Rafael,Ithinkthatisagreatidea.BecauseatyourrecommendationIdidsitinonthatmeetingandIknowthatthereweresomecommentsmadeontheDSMthatIthinkwouldberelativelyapplicablehere.Sothatwillgiveussomethingtogowith.

Mr.Montesadded:Icanalsoprovideyouwithsimilarprojectsthathadthetwogeotechsinvolved,TreasureIslandandsomeotherones.

Ms.Michaelsstated:AlsoIwanttoaddthatyoudonotneedtowaituntiltheBoardseesthisprojectfurtherforyoutosubmityourpermitapplication.Wewillacceptitatanytimeandthiscangoonparallelalongwiththatprocess.

Mr.Livingstoncontinued:HopefullywewillbereadytocomebacktotheBoardforasecondreadingwithourwholeprograminplaceandresponsestotheconsiderationsandconcernsthathavebeenraisedtodaybythatAugustmeeting,soperhapswecangetonthatagendatofollowuponthismeeting.

Weverymuchappreciatetheinputandtheopportunitytopresenttheproject.Weareprettyexcitedaboutmovingthisprojectforward.WehavegottenmostoftheapprovalsthatweneedandBCDCisthelastthresholdweneedtogetacrosssoweareveryanxioustoworkwithyouonthat.

BoardChairBorcherdtadded:Itlookslikeaniceproject,thankyouforcomingin.

5. Adjournment.Therebeingnofurtheroldornewbusiness,themeetingwasadjournedat3:56p.m.

Respectfullysubmitted,

RAFAELMONTES,P.E.BoardSecretary

Approved,withnocorrections,attheEngineeringCriteriaReviewBoardMeetingAugust8,2017.

Documents

Approved Minutes of May 24, 2017, BCDC Engineering ... · p.m., in the Benicia Conference Room at 455 Golden Gate Avenue, San Francisco, California. The following Board Members were