Storm Water Improvements Project Phasing Analysis February 27, 2018 - - PowerPoint PPT Presentation

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Storm Water Improvements Project Phasing Analysis February 27, 2018 - - PowerPoint PPT Presentation

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Storm Water Improvements Project Phasing Analysis February 27, 2018 Tonights Presentati tion Public education campaign update MWRD grant application Financial update Stormwater project phasing options (Stantec presentation)

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SLIDE 1

Storm Water Improvements Project Phasing Analysis February 27, 2018

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SLIDE 2

Tonight’s Presentati tion

  • Public education campaign update
  • MWRD grant application
  • Financial update
  • Stormwater project phasing options (Stantec presentation)
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SLIDE 3

Public Education Campaign

  • To date, the following has been accomplished:
  • www.wilmettestormwater.com
  • Mindmixer online community engagement platform
  • Open House (February 8th)
  • 4-page direct mailing sent to all Wilmette addresses
  • Communicator insert
  • Online estimated bill payment calculator
  • Trustees have been receiving regular updates transmitting resident communications

received via the website, email, and open house

  • The following tasks are in process:
  • Public education video
  • Open House (March 13th from 4pm – 7pm)
  • Final mailing in advance of April 17th Special Village Board meeting
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SLIDE 4

MWRD RD Gr Grant Application

  • n
  • Last week, Village Staff submitted a grant application to MWRD for the

Sewer Expansion project

  • The application was prepared by Village Staff and technical reviews

were conducted by both Christopher Burke Engineering and Stantec

  • The application requested $22 million for Phase I of the Lake Avenue

sewer trunk line, and indicated there would be additional requests in years 2019 and beyond

  • MWRD considers the Village’s project “shovel ready”
  • Additional grant monies are expected to be available in future years
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SLIDE 5

Storm Water Managem emen ent Proj

  • jec

ect A Alternatives es

The three projects under consideration by the Village include:

  • 1. Sewer Expansion ($80M - $95M)
  • Construction of 8 miles of new relief storm sewer
  • 2. Reduced Sewer Expansion + Neighborhood Storage ($70M - $80M)
  • Reduced conveyance plus neighborhood storage in Kenilworth Gardens
  • 3. Neighborhood Storage ($48M - $55M)
  • Neighborhood storage at Thornwood Park, Centennial Park, and the Community Rec Center

5

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SLIDE 6

Financ ncing

  • On November 27, 2017 Staff made a 23 slide presentation regarding

the potential financing of these projects, including a slide on how the sewer fee would incrementally increase over time

  • Feedback from the open house indicates that the sewer fee increases

should be discussed in more detail

  • Accordingly, the following 4 slides have been prepared to better

inform the community and Village Board of the sewer bill impact over time assuming each project is constructed without phasing

  • For example, the first year median sewer bill increase is estimated to

be $63 - $105 depending on the project selected

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SLIDE 7

+$105 +$84 +$84 +$63 +$21 +$21 +$21 +$21 +$63 +$63 +$42 +$42 +$42 $356 +$63 +$84 +$21 +$21 +$21 +$34

$300 $350 $400 $450 $500 $550 $600 $650 $700 $750 $800 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041

Estimated Water/Sewer Bill Impact Over Time

Sewer Expansion Hybrid Neighborhood Storage

Note: The Village’s financial advisor prepared projected annual level debt service expenditures for each of the projects under consideration (in 2017 dollars utilizing the high-end construction cost estimates), using a 4.0% interest rate and maintenance of the Village’s Aaa bond rating. Assumes median annual usage of 84 units.

+$420 +$357 +$244

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SLIDE 8

Neighbor

  • rhood
  • d S

Stor

  • rage

Estimate ted Sewer er B Bill I Impact ct Year Median Annual Increase Cumulative Increase 2021 $ 63 $ 63 2022 84 147 2027 21 168 2029 21 189 2030 21 210 2038 34 244

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SLIDE 9

Sewer E Expansion + Neighborho hood S Storage Estimated Sewer B r Bill I Impact

Year Median Annual Increase Cumulative Increase 2021 $ 105 $ 105 2022 63 168 2023 63 231 2026 42 273 2030 42 315 2038 42 357

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SLIDE 10

Sewer E Expansion Es Estimated Sewer r Bill Impact

Year Median Annual Increase Cumulative Increase 2021 $ 105 $ 105 2022 84 189 2023 84 273 2026 63 336 2029 21 357 2031 21 378 2038 21 399 2040 21 420

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SLIDE 11

$- $500 $1,000 $1,500 $2,000 $2,500 $3,000 $3,500 $4,000 $4,500 Property Tax Bill (3% annual inc.) Water Bill (3% annual inc.) Refuse Fee (2.5% annual inc.) Sewer Bill w/ Neighborhood Storage ($55M) Sewer Bill w/ Hybrid Option ($80M) Sewer Bill w/ Relief Sewer ($95M) 2017 2040

Proj

  • ject

ected ed F Future C e Cost o

  • f Vi

Village S Servi vices ces

  • The following table projects the cost of Village services over time
  • Note that unanticipated expenses, state and federal mandates, weather, and performance of the economy

will change these figures over time

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+ $315 + 143% + $307 + 110% + $244 + 69% + $420 + 118% Existing Cost of Village Services: $2,574 Cost of Services in 30 Years: $5,651 Cost of Services in 30 Years + Storm Water Improvements: $5,895 - $6,071 + $357 + 100% + $2,455 + 143%

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SLIDE 12

Village of Wilme tte , Illinois

F e b rua ry 27, 2018

Se par ate Stor m Se we r Syste m Study – Phasing Analysis

1

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SLIDE 13

Pha sing Ana lysis Ob je c tive

2

Unde r stand how pr

  • je c t phasing c an

impac t:

  • Pr
  • je c t c osts
  • T

ime to de live r be ne fits

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SLIDE 14

Pha sing Ana lysis Appro a c h

Co nstruc tio n Pa c ka g e s I mple me nta tio n Sc he dule Pha sing I mpa c ts

3

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SLIDE 15

Co nstruc tio n Pa c ka g e s

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SLIDE 16

De finitio n o f Co nstruc tio n Pa c ka g e s

F ac tor s Conside r e d Note s

Co nstruc tio n Co ntra c t Va lue $10 millio n - $25 millio n swe e t spo t fo r ma jo r c ivil c o nstruc tio n L

  • g ic a l Co nstruc tio n Bre a kpo ints

Cha ng e s in re lie f se we r a lig nme nt

  • r dia me te r

Cha ng e s in Co nstruc tio n Ac tivitie s Size o f pipe a nd struc ture s; Ope n c ut vs tunne l c o nstruc tio n Po te ntia l fo r De live ring Be ne fits Co mple te c o mpo ne nts tha t pro duc e b e ne fits Co nstruc tio n I mpa c t Ma na g e me nt E va lua tio n o f c o nc urre nt disruptio n

  • f stre e ts, pa rks

5

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SLIDE 17

Pha sing Co nside ra tio n

Ma ximize e a rly b e ne fits Orde r pha se s to b uild upo n o ne a no the r

6

Pha se 1

Re duc e d F lo o d Risk

Pha se 1 Pha se 2 Pha se 3

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SLIDE 18

E xisting Co nditio ns – 10-yr Sto rm

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SLIDE 19

Se we r E xpa nsio n Pha sing Ana lysis

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$19.8 Million $20.6 Million $17.9 Million $12.1 Million $14.0 Million

Constr uc tion Cost (inc l. c ontinge nc y) E ngine e r ing De sign & Constr uc tion Se r vic e s Cost T

  • tal Pr
  • je c t Costs

$84.4 Millio n $10.1 Millio n $94.5 Millio n

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SLIDE 20

Se we r E xpa nsio n Plus Ne ig hb o rho o d Sto ra g e Pha sing Ana lysis

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$20.2 Million $13.6 Million $8.5 Million $8.5 Million $17.0 Million

Constr uc tion Cost (inc l. c ontinge nc y) E ngine e r ing De sign & Constr uc tion Se r vic e s Cost T

  • tal Pr
  • je c t Costs

$67.8 Millio n $8.1 Millio n $75.9 Millio n

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SLIDE 21

Ne ig hb o rho o d Sto ra g e Pha sing Ana lysis

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$5.0 Million $12.4 Million $13.2 Million $17.0 Million

Constr uc tion Cost (inc l. c ontinge nc y) E ngine e r ing De sign & Constr uc tion Se r vic e s Cost T

  • tal Pr
  • je c t Costs

$47.6 Millio n $5.7 Millio n $53.3 Millio n

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SLIDE 22

I mple me nta tio n Sc he dule

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SLIDE 23

I mple me nta tio n Sc he dule s

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  • T

ime line Options

  • No Pha sing
  • 10- ye a r Imple me nta tion Sc he dule
  • 20- ye a r Imple me nta tion Sc he dule
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SLIDE 24

Co st Allo c a tio n Ove r T ime

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Se we r E xpansion Option, 10- ye ar Sc he dule

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SLIDE 25

Co st Summa ry

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Se we r E xpansion Option, 10- ye ar Sc he dule

I nfla tio n a ssume d to b e 3% pe r ye a r

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SLIDE 26

I mple me nta tio n Sc he dule

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SLIDE 27

Pha sing Ana lysis Re sults

16

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SLIDE 28

Pha sing Ana lysis Re sults

17

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SLIDE 29

Pha sing Ana lysis Re sults

18

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SLIDE 30

Pha sing Ana lysis Re sults

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SLIDE 31

Pha sing Ana lysis Re sults

20

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SLIDE 32

Pha sing Ana lysis Re sults

21

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SLIDE 33

Pha sing Ana lysis Re sults

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SLIDE 34

Pha sing Ana lysis Re sults

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SLIDE 35

Pha sing Ana lysis Re sults

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SLIDE 36

Re fe re nc e Ma te ria ls

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SLIDE 37

Se we r E xpa nsio n Optio n -10-yr Sto rm

Re d uc tio n in Vulne ra b le Struc ture s 95% (10-yr) 36% (100-yr) Pro je c t Co st (2017 do lla rs) $80 - $95 millio n 26

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SLIDE 38

Se we r E xpa nsio n plus Ne ig hb o rho o d Sto ra g e – 10-yr Sto rm

27 Re d uc tio n in Vulne ra b le Struc ture s 81% (10-yr) 35% (100-yr) Pro je c t Co st (2017 do lla rs) $70 - $80 millio n

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SLIDE 39

Ne ig hb o rho o d Sto ra g e Optio n – 10-yr Sto rm

28 Re d uc tio n in Vulne ra b le Struc ture s 71% (10-yr) 12% (100-yr) Pro je c t Co st (2017 do lla rs) $48 - $55 millio n

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SLIDE 40

Alte rna tive Co mpa riso n

Me tr ic Se we r E xpansion Se we r E xpansion + Ne ighbor hood Stor age Ne ighbor hood Stor age

Study Are a s Se rve d 14/ 14 10/ 14 11/ 14 Vulne ra b le Str

uc tur e s Pro te c te d

  • 10-yr Sto rm (10% Annua l Risk)
  • 100-yr Sto rm (1% Annua l Risk)

95% 36% 81% 35% 71% 12% Vulne ra b le Pr

  • pe r

tie s Pro te c te d

  • 10-yr Sto rm (10% Annua l Risk)
  • 100-yr Sto rm (1% Annua l Risk)

97% 21% 79% 22% 67% 6% T

  • ta l Pro je c t Co st Ra ng e

(millio ns o f 2017 Do lla rs)

$80 - $95 $70 - $80 $48 - $55 Disruptio n

  • Pa rks

1 3 Pha sing F le xib ility L imite d Mo de ra te Sig nific a nt

29

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SLIDE 41

Co st/ Be ne fit Co mpa riso n

Me tr ic Re lie f Se we r Re duc e d Re lie f Se we r + Ne ighbor hood Stor age Ne ighbor hood Stor age

T

  • ta l Pro je c t Co st Ra ng e

(millio ns o f 2017 Do lla rs)

$80 - $95 $70 - $80 $48 - $55

T ho usa nds o f 2017 Do lla rs pe r Struc ture o r Pro pe rty Pro te c te d

Co st pe r Str

uc tur e Pro te c te d

  • 10-yr Sto rm (10% Annua l Risk)
  • 100-yr Sto rm (1% Annua l Risk)

$270 - $320 $170 - $200 $280 - $320 $150 - $170 $220 - $250 $300 - $340

Co st pe r Pr

  • pe r

ty Pro te c te d

  • 10-yr Sto rm (10% Annua l Risk)
  • 100-yr Sto rm (1% Annua l Risk)

$65 - $80 $140 - $165 $70 - $80 $115 - $135 $55 - $65 $285 - $325

Co st pe r We st Side Wilme tte Pr

  • pe r

ty $16 - $19 $14 - $16 $10 - $11

30

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SLIDE 42

Village of Wilme tte , Illinois

F e b rua ry 27, 2018

Se par ate Stor m Se we r Syste m Study – Phasing Analysis

1