Sarasota Lift Station 87 Presentation

8/21/2019 Sarasota Lift Station 87 Presentation

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PROJECT UPDATEJune 8, 2015


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Agenda: What led to this point?

• Project Backgrond

• !atest "indings

• Risk #anage$ent

• Alternate Rotes

• %e&t 'teps

2


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Goals, design process, preliminary workPROJECT BAC()ROU%D

3


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Project )oals: Trst * Transparenc+

• En,iron$ental stewardship

• "iscall+ responsible approach

• #anage project risks

• #ini$i-e impacts to the public

4


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Project histor+ to date

5

#alcol$ Pirnie pril 200!

"elocate to #ormerhigh school parking lot

'tantec pril 200$

%uke &ood 'ark andin(erted siphon under)udson *ayou *ridge

Bo+le . AECO# pril 200+

%uke &ood 'ark andmicrotunnel under )udson

*ayou *ridge


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Project 'tats

2011Constrction

begins

6

,sp

rey(e-

.-/- 1 2012Work stops due tomicrotunnel issues

AECO# terminated o(ember 2012

#c(i$ * Creed retained ugust 201

!i/t 'tation 0sses

• perational

• /tructural

• /a#ety


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%e1 'ccessor Engineer o/ Record

"e(iew e3isting design

'er#orm supplemental in(estigations

4reate technical memorandums

'resent to city and public

"estart project time o# the essence

7


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#c(i$ * Creed Reco$$endation

6icrotunnel under bridge within the right o# way

Phase 0 'cope o/ Work

8

2dson Ba+o Crossing Phases

Approved by City Commission Jan. 21, 2014

• 6icrotunnel under e3isting bridge as designed or at re(isedele(ations

• )ori7ontal irectional rill under the e3isting bridge as in(ertedsiphon

• 6icrotunnel under bayou on either side o# bridge 9alternatealignment:


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#c(i$ * Creed Reco$$endation

)urricane storm surge protection

Phase 00 'cope o/ Work

9

City Commission direction April 21, 2014

• ;inali7e microtunnel design 9


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10

*ene#its

• 6aintenance o# =ra##ic

• ccess to *usinesses

• %ess ./ 1 >mpacts

Crrent Design Rote

)udson *ayou,s

prey(e

.-/- 1

Crrentalignment

6icrotunnel jacking pit

6icrotunnelrecei(ing pit

6icrotunnel jacking pit

Alternatealignment


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11

2dson Ba+o Crossing

6icrotunnel under bridge

e(eloped by /taheli =renchless

'eer re(iewed by tkins

ppro(ed by 4ity 4ommission

lternate alignment accepted by /ta##


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ew studies, inspection data and analysis!ATE'T "0%D0%)'

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Assess$ent o/ Bridge A


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North to

Mound St.

)eotechnical '$$ar+

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Original pipe=op o# pipe

ele(ationB


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esigns, data and assessmentsR0'( #A%A)E#E%T

16


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Risk Assess$ent o/ Designs

17

• Original design %essons learned

• #c(i$ * Creed design *e#ore bridge in(estigation

• #c(i$ * Creed design #ter bridge in(estigation


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Medium

Risk Register and Criteria

18

Pro


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What is a Risk Register?

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Anal+sis o/ $icrotnneling

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• 2igh jacking /orce i-e- Istuck machine

• En,iron$ental i$pact to 2dson Ba+o

• #i&ed /ace conditions hard soils on part o# machine, so#t on another

• Une&pected geotechnical conditions

• !ine and grade de,iations otside o/ tolerances

• Pipe


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Risk E&a$ple: 2igh Jacking "orce

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'robability 3 >mpact K Risk 'core

%ote: )igh Jacking ;orce happened twice during initial construction-


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Relati,e Riskscore =total>

Original design 534

#c(i$ * Creed design'rior to bridge inspection

8

#c(i$ * Creed design'ost bridge inspection

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4urrent design reduces risk signi#icantly #rom original design

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Risk #anage$ent Reslts


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23

Additional /actors considered

*athymetric /ur(eysettles 9201: !


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6ethods, plans and other considerationsA!TER%ATE ROUTE'

24


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Open Ct ,s #icrotnnelingL(aluate options to re


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Alternate Rotes: Control Ele,ations

26

)udson *ayou

.-/- 1

=op o#;oundation

6aterial=974>

>n#luent 6)

>n(ert=954@>

&etwell

>n(ert=9563>

,sprey(e-


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Reglator+ Considerations

27

'


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lternate "oute 1

574 !incoln Dri,e

28

.-/- 1

,sprey(e-

0 #anhole

!A

0A

%e1 ease$ent isrupts home

'ermits needed

isrupts condos


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lternate "oute 2

5@35 !incoln Dri,e

29

)udson *ayou

.-/- 1

0 #anhole

!A

0A2A

%e1 ease$ent

ew acMuisition

'ermits needed

isrupts condos


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lternate "oute

East o/ Bridge

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)udson *ayou

.-/- 1

0 #anhole

!A

0A2A

%e1 ease$ent

'ermits needed

isrupts home

isrupts park


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Open Ct Considerations

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• Ease$ents and land acisition reired • Reglator+ per$its

< ;L'?/arasota 4ounty< /o(ereign /ubmerged %ands

< Ln(ironmental "esource 'ermit< ;L'?4L Nariances

• En,iron$entalocumented %ead 4ontamination 92001 *oyle "eport:

• )eotechnical 0n,estigations*orings?*athymetric

• 'chedle


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Operational 0$pacts

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• Period s


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%or$al Operating Conditions

Open Ct

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Lle(ation


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'rcharge ConditionsExisting Wetwell Design

34

Lle(ation


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Upgrades 1ill still


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Planning le,el co$paranch 9'hase 1: F11-0 6 F!-5 6

%i#t /tation 8$ 9'hase 2: F1!-0 6 F1- 6

2 >nch 9'hase : F5-0 6 F5-0 6

%and cMuisitionO %egal

< F-0 6

Ln(ironmental < F!-2 6

%uke &ood 'ark"estoration

< F1-0 6

Total Esti$ate 34 # 84 #

Open Ct notes: )udson *ayou crossing assumes (ariance #rom state and #ederal regulation reMuirementsP %and cMuisition O %egal estimated based on city inputP Ln(ironmental #rom 2001 )udson *ayou /tormwater /tudy

36


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Anal+sis o/ project costsPre,ios Bid

January 2011

Pre,ios Bid

inde3ed to 2015

Crrent

esti$ate

Di//erence

8 0nch=Phase 5>

F1-5 6 F1-$ 6 F11-0 6 F+- 6

!i/t 'tation @=Phase 3>

F5- 6 F!-1 6 F1!-0 6 F+-+ 6

3 0nch=Phase >

F2-$ 6 F-0 6 F5-0 6 F2-0 6

Total Esti$ate F+-! 6 F10-8 6 34 # F21-2 6

%ote: 2011 bid inde3ed to 2015 dollars based on industry


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• "eplacement o# asbestos cement water mainsQ• >nstallation o# reclaimed water mainsQ• >nstallation o# new sewer mains 9'omelo 'lace:• >nstallation o# new water main 9lta Nista to *ahia Nista:• ;ull roadway restoration• %andscaped %i#t /tation $ site

4 #: Project Enhance$ents

F sprey, lta Nista, 'omelo, and?or 'omelo 'lace

• Ruotes #rom recent negotiation attempts7 #: 8 0nch =#icrotnnel>

Anal+sis o/ di//erences

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• 4ategory storm surge protection• perating redundancies• =otally enclosed #or all operation O maintenance acti(ities

• /a#e working en(ironment #or sta## • 4limate change pro(isions• eeper wetwell?operational e##iciencies• /ite preparation

@7 #: Upgrades

Anal+sis o/ di//erences

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"esol(ing design issues, communicating challenges%EGT 'TEP'

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'eencing o/Constrction

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)udson *ayou

.-/- 1

Additional

Ad,antages

"isk 6anagement

6inimi7e isruption toL3isting .tilities

4ost 4ontrols

6aintenance o# =ra##ic

•

•

•

•


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4onstruction 'lan

ThreePhases

42

Phase 3%/ 8$ construction

Phase 5! inch pipe

!i/t 'tation

emolition o#%i#t /tation $and parkrestoration

Phase 2 inch pipe


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Constrction Challenges

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• !i$ited site access• Constrction -one restrictions

• #ini$i-e i$pacts to !ke Wood Park

• #aintenance o/ tra//ic

• #ini$i-e ser,ice disrptions


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#icrotnneling

Work Hone

44

)udson *ayou

.-/- 1

"ecei(ing sha#twork 7one

%/ sitedri(eway

Jacking sha#twork 7one

Jacking sha#twork 7one

4onstructionsupport

work 7one


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#icrotnnel Work Hone =Ospre+>

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J A C K I

N G

S H A F T

MICROT+,,(L -AC.I,G !/AT

$OR. O,(

O S P R E Y

A V E N U E

CR

AN

E

P I P E

C O N

T R

O L

O O T H

A K E R

T A N K

E N

T O

N I T E

M

I ! E R

G E N E R A T O

R

S O I L

S E P A R

A T I O N

P L A N T

S T O R A G E

ST ORA

GE

HU"SON

AYOU

MICROT+,,(L ALIG,M(,T


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#icrotnneling Work Hone =!' @>

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U S # $

P I P E

C O N

T R O L

O O

T H

A K E R

TA N K

E N T O

N I T E

M I ! E R

G E N E R

A T

O R

S O I L

S E P A

R A T I O

N

P L A N

T

S T O R

A G

E

-AC.I,G

!/AT(+IPM(,T

PIPESTORAGEAREA

OFFICE

TRAILER

MICROT+,,(L ALIG,M(,T

JA C K I N

G

S HA F T

C RA N

EL! !IT(RI($A

Y


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Bilding Work Hone

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U S # $

APPROIMAT

((CAATIO,LIMIT!

APPRO(!IT( PLA,


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'chedling and Ti$e/ra$es

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Lstimates subject to #inal engineering decisions

Bid Phase 'tart "inish

3456 3458 345 345@ 3457 3434

R1?2

R?

R1?2

R?

R1?2

R?

R1?2

R?

R1?2

R?

R1?2

R?

Cr rentDes

ign

! inch9'hase 1:

July2015

June201$

%i#t /tation9'hase 2:

/ept-201!

June201+

2 inch9'hase :

Jan-201+

ug-2020


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49

• En,iron$ental ste1ardship< >mpro(e ser(ice and system reliability< /torm protection 94ategory hurricane:< ##set potable water demands with reclaimed water

• "iscall+ responsi


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Path to the %e&t Phase

50


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Cit+ Co$$ission Direction ctions to mo(e the project #orward

• Pre9ali/+ specialt+ contractors6icrotunnel under the bridge

• Prse alternate align$entLasements will be necessary

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Discssion


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!i/t 'tation @ "nding Options

• 345 Rate '//icienc+ Anal+sis

• Annal Rate 0ncrease

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Option 54ash while maintaining 4>' #unding le(el

• De/ers 34 $illion o/ 0n/rastrctre projects*etween 2015 and 2020

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Option 3*ond debt while maintaining 4>' #unding le(el

• One ti$e rate increase in 345>n addition to planned D

• %o in/rastrctre projects de/erred

• Rate increase to /nd de


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Option *ond debt while maintaining 4>' #unding le(el

• %o rate increase related to !i/t 'tation @ nnual D rate increase is necessary

• De/er so$e in/rastrctre projectsF1-8 million per year until loan is satis#ied

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'ta// Reco$$endationOption *ond debt while maintaining 4>' #unding le(el

• %o rate increase related to !i/t 'tation @ nnual D rate increase is necessary

• De/er so$e in/rastrctre projectsF1-8 million per year until loan is satis#ied

"inance and Utilit+ Depart$ents 1ill re,ie11ith rate s//icienc+ consltant

• >denti#y and de(elop best (alue option

• 'resent to 4ommission 57


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Discssion

Sarasota Lift Station 87 Presentation

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