T a pia Ra nc h Wa te r Supply Assig nme nt BOARD OF DI RE CT - - PowerPoint PPT Presentation

T a pia Ra nc h Wa te r Supply Assig nme nt

BOARD OF DI RE CT ORS ME E T I NG JUL Y 17, 2018 I T E M 6.1

A

• Applic a tio n/ De po sit a nd F

unding Ag re e me nt

• De te rmine pro je c t de ma nd
• De te rmine BV-RRB Wa te r Supply is a va ila b le

B

• Ne g o tia te Anne xa tio n Ag re e me nt
• I

nitia te L AF CO pro c e ss

• Applic a nt a c q uire s e ntitle me nts/ CE

QA

C

• Bo a rd Appro va l o f Anne xa tio n Ag re e me nt a nd

c o nditio ns pre c e de nt (inc luding DWR Appro va l)

• L

AF CO a ppro va l

Ove rvie w o f Anne xa tio n Pro c e ss

T a pia Ca nyo n

405 Sing le F a mily Ho me s 85 Ac Co mmo n L a ndsc a pe d Are a

T a pia Ra nc h De ve lo pme nt Bo unda ry

Re vise d Anne xa tio n Are a

BV-RRB Wa te r Purc ha se

 Se pte mb e r 2002 F

ina l E I R b y BV-RRB fo r pro je c t to c re a te supply b y re re g ula tio n o f hig h flo w K e rn Rive r wa te r

 Oc to b e r 2006 F

ina l E I R b y CL WA fo r Ac q uisitio n

 11,000 AF

fo r in se rvic e a re a de ma nd



4,735 AF fo r five a ntic ipa te d a nne xa tio ns (E stima te o f 750 AF fo r T a pia Ca nyo n)

 Ma y 2007 Purc ha se Ag re e me nt e xe c ute d

BV-RRB Ba c kg ro und (Co ntinue d)

 2008 – Do wnturn in ho using ma rke t  Only L

e g a c y e nte re d into De po sit a nd F unding Ag re e me nt

 2008 – Wa ng e r De c isio n re duc e d SWP re lia b ility

 Ag e nc y re se rve d a ll BV-RRB wa te r fo r in se rvic e a re a use

 2012 – 3000 AF

ma de a va ila b le to L e g a c y a nd T e so ro Anne xa tio ns

 2014 – T

a pia unde r ne w o wne rship a ppro a c he d Ag e nc y re a nne xa tio n

 2016 – 2015 UWMP Ado pte d  2017 – De po sit a nd F

unding Ag re e me nt E xe c ute d fo r T a pia Ca nyo n

 2018 – Wa te r Re so urc e s a nd Wa te rshe d Co mmitte e re vie we d BVRRB

wa te r supply a va ila b ility

Wa te r De ma nd De te rmina tio n

 Appro a c h

 Sing le -fa mily ho me de ma nd b a se d o n lo t size a nd de ma nd fa c to rs fro m

a dja c e nt ne w c o nstruc tio n

 Co mmo n la ndsc a pe a re a s b a se d o n de ve lo pe rs la ndsc a pe pla ns a nd

c urre nt la ndsc a ping o rdina nc e s

 L

• ng -te rm e stima te d wa te r de ma nd o f 489 AF

/ Yr

Anne xa tio n De ma nds I nc lude d in 2015 SCV UWMP

Anne xing De ve lopme nt Pote ntially Using BV- RRB Supplie s 2015 UWMP E stimate (AF Y) Curre nt E stimate (AF Y) L e gac y

2,500 2,500

T e soro

500 389

T a pia

575 489

T

• ta l

3,575 3,378

2015 SCV UWMP – 2050 Wa te r Ba la nc e

Supply Sourc e Ave rage / Nor mal Single Dry- Ye a r 4- Ye a r Dr

• ught

3- Ye a r Dr

• ught

E xisting Gr

• undwate r

31,545 40,215 36,175 35,875

E xisting Re c yc le d

450 450 450 450

E xisting Impor te d

70,707 22,087 45,177 33,167

Ba nk/ E xc ha ng e s

7,950 7,950 7,950

F utur e Gr

• undwate r

10,230 20,335 21,875 21,325

F utur e Re c yc le d

9,604 9,604 9,604 9,604

F uture Bank/ E xc hange s

22,000 22,000 22,000

T

• tal Supply

122,536 122,641 143,231 130,371

De mand w/ Ac tive Conse r vation

93,900 103,300 103,300 103,300

Surplus

28,636 19,342 39,931 27,071

2015 UWMP - De ma nd a nd Supplie s

Wa te r Supply Re lia b ility Ana lysis

 Alte rna tive Wa te r Supply Sc e na rio s c a n b e e xplo re d b y re vie wing

the 2017 Wa te r Supply Re lia b ility Re po rt Upda te

 Diffe rs fro m UWMP Ana lysis

 E

mplo ys a study pe rio d o f 2017-2050

 De ma nds inc re a se thro ug ho ut study pe rio d  L

• c a l a nd impo rte d supplie s va ry with hydro lo g y

 Wa te r b a nking / e xc ha ng e pro g ra ms a re o pe ra te d thro ug h 86

hydro lo g ic se q ue nc e s

 Pro vide s pro b a b ilitie s o f me e ting wa te r de ma nds

Wa te r Supply Re lia b ility Pla n Sc e na rio s E va lua te d

BASE SCE NARIO: Base d on 2015 UWMP de mand, supply, and stor age pr

• gr

am assumptions

SCE NARI O A SCE NARI O B SCE NARI O C

Ba se sc e na rio with:

• SWP supplie s via CA

Wa te rF ix Ba se sc e na rio with:

• Mo de ra te supply

re duc tio ns

• Re duc e d SWP supply

re lia b ility

• L

e ss inc re a se in Sa ug us pumping c a pa c ity a nd re c yc le d wa te r use Ba se sc e na rio with:

• L

a rg e supply re duc tio ns

• L

a rg e re duc tio n in SWP supply re lia b ility

• Additio na l limits o n

g ro undwa te r supplie s a nd re c yc le d wa te r use

I nitia l Re lia b ility o f Sc e na rio s

2050 Ba se Ca se vs. Sc e na rio C

Sour c e Nor mal- Ye ar Single Dr y- Ye ar

Ba se Ca se Sc e na rio C Ba se Ca se Sc e na rio C Diffe re nc e SWP T a b le A 60,000 42,800 7,600 7,600 Ro se da le Ba nk N/ A N/ A 20,000 10,000 10,000 Ne wha ll Se mitro pic Ba nk N/ A N/ A 4,950 No t in Sc e na rio 4,950 Ne w Ba nk N/ A N/ A 5,000 No t in Sc e na rio 5,000 Alluvium 31,100 (Ma x) 29,000 (50% Pro b .) 31,100 (Ma x) 27,400 (50%Pro b .) 27,400 20,600 6,800 Sa ug us 10,700 10,700 33,200 10,700 22,500 T

• ta l

49,250

Sc e na rio C: Mitig a tio n Ac tio ns

 Co nc lusio ns:

 Sto ra g e pro g ra ms ra the r tha n a dditio na l supplie s  Additio na l withdra wa l c a pa c ity fro m sto ra g e pro g ra ms

 Ca n a c hie ve 95% re lia b ility g o a l thro ug h va rio us pro g ra ms a nd/ o r

c o mb ina tio ns o f pro g ra ms

 Po te ntia l a c tio ns use d in re lia b ility e va lua tio n:

 E

xisting Rig hts Ro se da le -Rio Bra vo Ba nking Pro g ra m

 I

nc re a se d ta ke c a pa c ity to 20 T AF Y b y 2035

 Ac c e ss to F

ive Po int Rig hts in Se mitro pic (Pa rt o f NR Spe c ific Pla n)

 Cre a te Sa ug us F

• rma tio n Wa te r Ba nk

 Othe r pro g ra ms c o uld a c hie ve simila r re lia b ility re sults

Re lia b ility o f Sc e na rio s with Sc e na rio C Po te ntia l Ac tio ns E va lua te d

T a pia Ca nyo n Pa yme nt fo r Pa st Ac q uisitio n a nd Ca rrying Co sts

T ype of Cost T apia Canyon Shar e

Ac q uisitio n Co st 706,109 Ca rrying Co st (2007-2018) 3,399,083 Wa te r Sa le s Cre dits 330,075 T

• ta l

3,775,117

Co nc lusio n

 Suffic ie nt BV-RRB wa te r supply is a va ila b le unde r 2015 UWMP

pla nning a ssumptio ns

 Unde r le ss o ptimistic pla nning a ssumptio ns, the Ag e nc y ha s

suffic ie nt a ve ra g e wa te r supplie s a nd dry-ye a r de ma nds c a n b e me t thro ug h inve stme nts in sto ra g e pro g ra ms

Re c o mme nda tio ns

 T

he Wa te r Re so urc e s a nd Wa te rshe d Co mmitte e re c o mme nds tha t the Bo a rd o f Dire c to rs a ppro ve a re so lutio n de te rmining tha t 489 a c re -fe e t pe r ye a r o f Bue na Vista -Ro se da le Rio Bra vo Wa te r Supply is a va ila b le fo r po ssib le use fo r the pro po se d T a pia Anne xa tio n.