HomeMy WebLinkAboutPackets - Council Packets (1650) AGENDA
ORO VALLEY TOWN COUNCIL
AND
WATER UTILITY COMMISSION
JOINT STUDY SESSION
SEPTEMBER 11, 2000
DEVELOPMENT SERVICES BUILDING
(HOPI ROOM)
11,000 N. LA CANADA DRIVE
ORO VALLEY, ARIZONA
STUDY SESSION
CALL TO ORDER — AT OR AFTER 7:00 PM
ROLL CALL
1. DISCUSSION AND REVIEW OF ALTERNATIVE WATER RESOURCES
DRAFT FINAL REPORT
ADJOURNMENT
The Town of Oro Valley complies with the Americans with Disabilities Act (ADA).
If any person with a disability needs any type of accommodation, please notify
the Oro Valley Town Clerk at 229-4700.
POSTED: 9-8-00
4:30 p.m.
lh
TOWN OF ORO VALLEY
COUNCIL COMMUNICATION STUDY SESSION: September 11, 2000
TO: HONORABLE MAYOR &COUNCIL
ORO VALLEY WATER UTILITY COMMISSION
FROM: Alan Forrest, Water Utility Director
SUBJECT: Renewable Water Resources Report— Final Draft
SUMMARY:
I believe you have all received a Final Draft copy of the Renewable Water Resources Task Force report --
Renewable rater Resources for the Town of Oro Valley. In general, the report details the work of the Task Force and
provides recommendations regarding the Town's utilization of renewable water resources.
During the course of their deliberations, the Task Force analyzed a number of options associated with bringing
alternative water supplies (i.e., non-groundwater supplies) to the Town of Oro Valley. The overarching objective
of their work was to identify the most effective options for delivery of renewable water supplies for the Town.
Specifically, two major issues were emphasized by the Task Force:
1. Providing an alternative water supply to meet the needs of large turf facilities, particularly golf courses, and;
2. Insuring the Town has an acceptable and reliable supply of potable water to meet residential demands.
The Task Force evaluated many options aimed at achieving these goals, however, all of the options involved the
use of reclaimed effluent and/or Central Arizona Project (CAP) water, in some form. Many different treatment
methods, delivery schemes and source combinations were analyzed and are detailed within the report.
Results of the Task Force efforts and their recommendations regarding the utilization of renewable water
supplies within the Town of Oro Valley will be presented during the September 11th Study Session. In addition, a
summary of proposed changes to the report, based on comments received to date, is attached for your
information and review.
ATTACHMENTS:
RESPONSE SUMMARY TO COMMENTS ON THE FINAL DRAFT OF THE RENEWABLE WATER
RESOURCES REPORT FOR THE TO OF ORO VALLEY
Water Utility Dire tor
Town Man er
t ,
•
ti
September 6, 2000
MEMORANDUM
TO: Honorable Mayor and Council of the Town of Oro Valley
FROM: Renewable Water Resources Task Force
CC: Oro Valley Water Utility Commission
Project File No. 206.01
RE: RESPONSE SUMMARY TO COMMENTS ON THE FINAL DRAFT
OF THE RENEWABLE WATER RESOURCES REPORT
FOR THE TOWN OF ORO VALLEY
The following document is in response to comments and suggestions submitted by the Oro Valley Water Utility
Commission upon completion of their review of the Final Draft of the Renewable Water Resources Report for
the Town of Oro Valley. The suggested changes,along with all other suggested revisions submitted by Mayor
and Council will be added to the final report after the September 11,2000 Study Session regarding this subject.
The changes and additions to this report are offered in the order that they are written within the report.
ITEM No. 1
Page vi and vii,Executive Summary,Sixth Paragraph
The sixth paragraph of the Executive Summary has been revised to read:
"Key issues considered in this report are mitigating current and predicted future water level declines in the
aquifer and water quality. The Town is a designated water provider by the Arizona Department of Water
Resources which, currently allows a decline of the groundwater level over time of up to 1000 feet per the
current assured water supply rules. The recommended policy is for TOV to develop renewable water sources
that minimize all long-term water level declines. One of the trade-offs for maintaining water levels may be
water quality. Raw CAP water has an average level of Total Dissolved Solids(TDS)of 650 parts per million
(ppm). These levels of TDS can be used directly for potable and/or turf or mitigated through dilution with
groundwater or membrane filtration. The trade-offs of cost and quality will be topics of discussion for
council and residents. Every effort should be made to assess those perceptions and promote public input into
the option selection process. The initial implementation phase should be construction of facilities to provide
alternative water sources to golf courses and other major turf areas within the next three to five years. The
program should include concurrent planning,design,and implementation of infrastructure that will augment
the potable domestic water supply soon after the turf areas are off groundwater."
RENEWABLE WATER RESOURCES TASK FORCE
Town of Oro Valley
C:\WINDOWS\TEMP\Response Summary.doc
Honorable Mayor and Council of the Town of Oro Valley
September 6, 2000
P age 2
ITEM NO.2
Page 1,Introduction; seventh paragraph
The above referenced paragraph has been revised to read as follows:
"The continued use of the well option was considered a base case alternative. Due to the continued and
escalated depletion of the existing groundwater levels,the existing infrastructure and current cost of pumping
the water cannot be maintained into the future. As the water level drops and demand increases,new wells
will be required, and well abandonment and replacement of existing wells will be required due to the lower
groundwater levels. In addition, water quality generally degrades with increasing depth, and newer and
stricter groundwater quality regulations may require treatment of groundwater beyond the minimal
disinfection that is required today. Another problem associated with long-term reliance on groundwater wells
is land subsidence. Sole reliance on groundwater for all future water demands does not appear to be a viable
solution."
ITEM No.3
Page 2,Section 2.1.1 -Potable Water; fourth paragraph
While TDS is a concern,it should be recognized that customer satisfaction is primarily determined by color,odor,
taste, and turbidity; not necessarily TDS. In addition, water quality factors such as pH must be carefully
controlled to avoid degradation of water-system components and reduction of aesthetic components of the water
supply.
ITEM No.4
Page 3,Section 2.2-Water Level Decline; second paragraph
The above-referenced paragraph has been revised to read as follows:
"Presently, ADWR requirements for the Town of Oro Valley's AWS designation prohibit pumping
groundwater from depths greater than 1,000 feet below land surface. Depths to groundwater in the Oro
Valley service area are currently less than 300 feet below land surface."
WestLand Resources,Inc.
C:\WINDOWS\TEMP\Response Summary.doc Engineering and Environmental Consultants
Honorable Mayor and Council of the Town of Oro Valley
September 6,2000
Page 3
ITEM No.5
Page 9,Section 3.3 - Declining Water Levels; first paragraph
The first paragraph of the above-referenced section has been revised to read:
"The overall decline in groundwater levels over the period of well measurement records in the TOV service
area have been small (less than a total of one-foot per year over a 30-year period). Groundwater level
declines in the area's northern well fields have been less than in the southern well fields. The largest average
annual decline for a TOV well during recent years is 2.8 feet. This occurred during the 1995 to 1999 time
period within the Countryside service area,outside of the Town limits. In other parts of the lower Canada
del Oro(CDO)Wash and Tucson Basins,groundwater elevations have declined more than four feet per year.
Without an alternative water supply, groundwater level declines of four feet and more per year can be
expected within the TOV service area within the next 30 years(given projected increases in water demands)."
ITEM No.6
Pages 19-21,Section 4.3.3.1 —Description; last paragraph on page 19; first paragraph on page 21
The above referenced paragraph has been revised to read as follows:
"Option C consists of the TOV building its own wastewater reclamation facility near La Cholla Boulevard
south of Linda Vista Boulevard(Figure 6). The reclamation facility would consist of a wastewater treatment
plant to meet the requirements of the proposed reuse standards. The new facility and pump station would
divert flows from the existing CDO and La Cholla Boulevard interceptors to capture the majority of flows
originating in the TOV. It is anticipated that approximately 90 percent of the flow can be captured and
treated to open access reuse standards. An adjacent pump station would pump the reclaimed water to an
elevation of approximately 2,850 feet through a new 24-inch main paralleling CDO Wash,then north within
First Avenue,tying into the proposed onsite distribution system."
ITEM No. 7
Page 35, Section 4.4.6.2 -Pros and Cons
The above-referenced section has been revised to read as follows:
4.4.6.2 Pros and Cons
Pros:
• Settlement of original NW Area agreement.
WestLand Resources,Inc.
C:\WINDOWS\TEMP\Response Summary.doc Engineering and Environmental Consultants
N , F
Honorable Mayor and Council of the Town of Oro Valley
September 6,2000
Page 4
• Tucson Water anticipates a quality of about 450 ppm TDS.
• Reduces groundwater drawdown.
• Minimal environmental effects because most pipelines are within the existing disturbed right-of-way.
Cons:
• TOV will be served by Tucson Water without representation.
• Must use another source of water for turf usage.
ITEM No.8
Page 35,Section 4.5-Estimated Costs
This section has been revised to read as follows:
"A summary of estimated costs for each water resources management option is presented in Table 2. Details of
these cost estimates are provided in Appendix A."
ITEM No.9
Page 47,References
The following reference has been added to the Reference section of the report:
"Arizona Department of Water Resources. Current regulations and guidelines
Arizona Revised Statues, Title 45,Waters"
ITEM No. 10
General
Since production of the Final Draft of the Renewable Water Resources report,additional information has been
provided by the BOR that has modified the costs of Option I. Using this data,the cost of Option I appears to be
approximately $598 per acre-ft. The Water Utility Commission questioned whether or not the BOR had
considered the costs associated with blending (i.e., CAVSARP) in its calculations. Based upon this item, the
Commission recommended that the range of$552 to$752 per acre-ft remain within the final report.
TAM:jc
WestLand Resources,Inc.
C:\WINDOWS\TEMP\Response Sununary.doc Engineering and Environmental Consultants
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+ Water Quality
— Potable Water
— Turf Irrigation
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+ Cost Allocations
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+ Assured Water Supply/ADWR Management Plan
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YEAR roi;
Renewable fl'aler Res.ources Project
SUPPLY
15,000
Potential Alternative Sources
• Town of Oro Valley Share
6 10.000 of Tucson CAP Allocation(6,530 Ac.Ft/Yr)
• Unallocated Municipal and
a. Industrial CAP Water(3,357 Ac.Ft/Yr)
• Reclaimed Water(4.000 Ac.Ft/Yr)
5,000 - --Existing CAP(2.294 Ac_Ft/Yr)
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OPTIONS:
Alternative Water Option. S;UITI.m.ary
Capacity
Option Name (af/yr) Water Type Usage
A Raw Water Delivery System(turf) 4,000 CAP Golf Course/Turf
B Tucson Water Reclaimed Water System 4,000 REC Golf Course/Turf
C TOV Reclaimed Facility 4,000 REC Golf Course/Turf
\GR1/4143 D CDO Recharge and Recovery Project 13,500 CAP/GW Recharge Golf Course/Turf
E NW Raw Water Delivery 14,400 CAP/GW Recharge Golf Course/Turf
F
Cony.Treatment and Direct Delivery of CAP 10,000 to 14,000 CAP/GW Potable Water/Golf Course/Turf
Water
G R/O Treatment and Direct Delivery of CAP 10,000 CAP/GW Potable Water
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H Blend-Conv.Treatment of CAP and 17,500 CAP/GW Potable Water
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I Tucson Water Potable Water Delivery System 10,000 CAP/GW Potable Water
KEY: CAP—Central Arizona Project
REC—Reclaimed Water
GW—Groundwater
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5
OPTION A..,
OPT :
1.\..ir1_7:113L...aw- Water Delivery System__
ii,g,:simr,3— DELI VERY TO
UARANA GOLF COURSES
:E (OW )
t:IC'lruPrI:NrATICN DUOUNTAINirTE:CETII;:J'T I 1 Ing„11 i
' A /
' :
.. k.
. .
1--- -1
• .....,),,,A,C. I .-7...
L,..-r- ,.. _. ,MOORE FL.---, 1 r .
30
,,4
.. 130-MAIN r/ 4 . 11 _ 1
_ / .
/ 124-
' TAA GERINE RD. i T k.:, NI
/
-bil -in -•--'' --'6 "' Cli-A7 P4 if,
-gr, . •. ,
ix-,-------__-:,,,, sx • R-in ,1 ,,i,f L',47% 04.1*1,?'- '
/ \
... (--- \
N ,
-, - pr•,i9..,' ,'---
,..--
LI ...."r LINDA VI-1., --..
411r
/c
I
..•:,....,
4
$833/ac-ft ..,::6")•,:,::.-',..-.,,
,. . ...., —
Renewabk Dater.Resources Project
OPTION F...:
Tucson Wat.er Reclaimed Water
L...yy....3e1.iver- Sstem_: , . . _,:, ./ _ ./ ...„.J,
. CONNECT YO ONSITE Ulf
41>' 1E', INA R OISITNOUTION SYS.
. • :'''',--- .:'•
r
?--i---"L '24
TT
I 7. • '1 1 1 1 ,n,---‘kw•f"-,•-:'•-I--7
1
1 • F; -1 < 5----,2,° , '''.,z4,,V..-.''' ':-.(>-?.
ce,V
U ,- CANON1V0 R
. /4 J_. 174_,
I —".w i;i7 =-1 Pj:
,, ,:'1,, _j :-,cm.?_, •,.._ 45- :1------:-E0,
•.: I--I .-,
$967 _
/ac-ft Li — . - 6to, • ,soiry
Renewable Water Resources Project
6
.
OPTION C....-
Town of Oro Valley R.erclartration 'Facility
. .....,.„:„..:._.,::.......:.•:,•,:.:.,:::...:.:......,.,:„.::..,..,.......:.,....... •
. ,
, i MOORE RD. 1,, '.., ,:•••,;.;, ,N,.,_
1 1 1 ____T__. 1 - -111-i •
I -•
M.INE RD. ,.i:..,)e•,-L21,-, 1 t:trit ;,.,.(ktai.,...1
- ..st L. • ,„:Li..,,,, ,..f.,
'•,,t
.—.. .- Ii1_,..-ii? A
•_-_, iv;gig:- .u,, (i) ':)\‘-' sc'• '
--t- .g 1 . 4 •' .- I.. Ta.:
•t ;:".• • .::•-
,--, ---q, s t •- -,-,-, ••,t'-.'-''':14 ,.:.:,- ''''•'"4‘,4
_ 5'-',_7. ,--•..,;.
Ji.,,, „.!..... . .'
I' (— _.' ./, ,,, .;.,' . ,..d.s.s1..._,,o,-0(,'r
,,, .....)x _.„.„.._.,„:,,,
• • ,.., . ,,,. _,.. ....,....„, , . .\,...
,,,. „." • ,..,-,----4 !-,
\ ' c.,....-
•q +1:9,EILM). • i--,_., 24.REUARED ' i
- .,---i
70 4 "• :, VIA.MAUI I ID,
•-4:., •• ..-
-.,'
_.7..ANo Pim.STATICN , J.,::'>, •ifi 1 ,..,,,, ':,,----,,.:—.4--.
I )2 LI 1. li'‘,1 le 3' 14ARD •.‘..j•Y; 7 t,L.,/,'",_,.,.-••:-1 f• 4- ,.,...,,,,,,
. _ _ — • ,.,,f.4..)0:•-'
...,.......„,.,.....,...................,.,........„,........ ..,.......,..„.„..„.„.....,..,•..„........... ......„ .. ..... • •: . .,..,,„:„.,56,,,:,',i,.it r
I'13.4101SY r
Renewable Haler Resources Project 4:' ..444:
•
•
OPTION D:
Canada del Oro
Recinrefe and Recovery Project
...........,..:. .„.„...,:,..:...,::.:,:::.....,:„..:.„...„....::.:..::.:,.:„.„.
1,Angomois4,=- (
DELIVERY TO CONNECT TO ALTERNATIK ' 1
NEW CAP TURNouT IMAM*GoLF COuRsES wATER DISTRIBUTION SYSTEM
AND PULPING STATION (DOVE MOUNTAIN)
' r ME
. :
''s. • 1111111 -tirjli-;7 Iti
' MOORE RD.ra , .. i'll‘,.'•
1111 NEES7
TANGERf 1.- 36
4 , PIIIIIIM .I l'
I/ EN= 11111031=r ,
.....
TAN.RINE
_ .f i .r.
,_. t Lty.,._ a
.. Witg..1 NARAg RI
-
la II
LAMB R IN.II. 2..
:-:•= T„
\ 1 .I • • :.i.:Mir.-4 4 os,'''•— ..',,
s _._-
'..::.‘, Li -;E.IA'Brivo44. rEtirim ',2 % re,:
.::
Witl
VIE tilk at girt77/,-
•.
•
w 4-T-,7 t5::,yrairatri mom.
$634/ac-ft(Potable) '',• • .:,.•-• .c. ,.-A's 4411- -,f2Z rf
.1 st,•.:, .... W...i, _„\,.
$500/ac-ft.(Turf) - '1404 -- s.:1 . --- `7.c-,.,:i:s%,- "11 -._ -.. 4,1,
•,.°.".',01.4,..%
... ..F.4t0.:,:,
. ,•:%.,,,i,,i.kt'i:::•;..r
Renewable Water Resourc(s Project
7
OPTION E:
Northwest Raw Water Delivery System
jt.4 - DELIVERY TO I 1 I I ''-F
(tRvrtouNG.f, ,COURSES CONNECT TO ONSITE TURF
WATER OISTRIBUTION SYSTEU ' 11-
, la CRIPZTATICN , - '', 44 '
,
,
•\ ,.
r - --ii
). ,
. 1 24'MAIN. 'i
I .
',CF:.' '444., • MOORE liD. T „. a 7',..A•
30' 1- ,
(51
-‘--,
\----
TAP.GERINE RD.,.
/ 0' NAB J.OR
,<,,- : •i :ME :I ' ' -'!,74/PIP'i3' -4';'
1 '(--------,, - <
,-- I LAMB
.. , i .,___ 3, , illier,,,p. •..9-'f
„
‘cs.' \
/ • ;,., • ..:11/ Aj .k:---e.
..:.,1 • wr, LIND-A-
P'47, -'-
r---,
\ _,se A .. ,ir., -I•',`----"jc T Z 4,.
$646/ac-ft(Potable) k .-.. -' ;'.,
$507/ac-ft(Turf)
Renewable H.eirter Resources Project
• i l''''Li
.. "-''. . OPTION F:
9 Conventional Treatment and Direct
(
Delivery of CAP Water
.....
°WARY.
121 0 MG RESERVOIR 1(=ouGO,gAic,r,
CONNECT TO 0.111 ,
TURF WATER DISTRIBMTION,:,'
REC.*.MADAN]PLANT SYSTEM
(..ncou IREARIENT)
122.4 MG RESERVOIR _ 1 -Vi,;:it,'
. ,e,',,,,/1 • ,,.,,,,
- : \•, ,-).---': 4,
.6'
•
4
/
,:.
TANCE.INE RD
145
Ukli _ ?(41, t',,„•:L.
qfvIMP"` = '. 4P---:,' ;"•
/ -• \ " r I 1 C ' ..oc,-;447:.' '
II" r 1411
-1,, -_-,1,10:t.71
. j ,,,. 4' ::t-,....
$725/ac-ft(Potable) 4,, - s 1wWitz):: .,.., 21-y-z.-021:,,
: l': 4.,::71,:t ‘>'',.,'5, Mr iiiMP
$817/ac-ft fr urt) -
44 ^
Renewable Hater Resources Project
.•"..-;',;;S'
8
OPTION
RIO Treatment and Direct Delivery
of CAP Water
. ..
REGIONAL TREAlmENT RANT riAA
(cON3RNTIONAL1REANENT) 22493 -
WITH WW1.FILTRATION ,
21096.RESERV_CLIT '
I *.ii
,.:* ,,,•
III 66-MAIN ..:rjaran i
I . .
1 1.6- 11=1
II . I ' • ,i."..aill
IIIINE RD. illIl 111111PAMIL • •1911 ..
MISECIIIRIIII
EI-.4.'.4, 1111W1121111"..1111111115Tra165
,
irl---,:-..',1111111rAltrtalliallfi-,--1111
NKr ,,
II il ..stiaiiiV Mr'''kelitatanA
imirms7(,..1 min: grAiiiiiu!a
inim..:*, mot ,wirtio777.y
#
ntippirlig.,IT-- —rpm --viim
:!,31.,.cat/... .15. .... ,,„1.....,,,-.
' ,„''''.7-Mirtg..--fin rttl- FAIN ir.':` --.1
,
i;
l
'
$9 _
34/ac-ft(Potable)
Renewable II.ater.I?esources Project
OPTION H:
Blend Conventional Treatment
of CAP and Groundwater
, 1
,,,..G.,..„. • Gutii,,=zi-". CONNECT TO ONSITE TURF
(DOW MOUNTAIN) WATER DISTRIBUTION
SYSTEN
REGIONAL TREATMENT PLANT I
(CON,ENTIONAL TREANENI) 122.4 MG.RESERVOIR ? _ ' '1444 \)*'''
\,4'66. ?c . . I ' . ,.1:"Aig •‹,
, ----411- ,-- ' Aare 72,1411111,
...
..,
.:,
.GEFINE RD. _ AIM .11111111 12V3 5..
.MI •V' 't..RP '-
u _ ,Al r,3 r
"7 1 A -A., .. tv
- .',..., .-.,_.
uic
m ----..,,, , --,-: isopi,z= , ,'
.., .
1t, . ---1 • •
= ‘ .'.• ' * ....Ai&IN4 tiiili....,..
1 U A,' " -' •r
IAZP-- mw2 --1 11111/
N ,rt '
Vii i'.. ,,,,-J., /10. 7,..7/ •
?1-44" ''`4‘ .coRiA:0R../44-Gc,
1,4.h, ,,,- .s,:-9.
$613/ac-ft(Potable) --.0,- ..,-44-6.,.,4e,:x4- -_,1.!.)711-: —
Vr. ". .c,::. 1 .L,-2k51 k,-..,-.. 6.-oa,'';fp i Atr. .
$8171ac-ft(Turf) - , a‘,-tgei"nr,-,.."_Et
f
'..,
Renewabk flater Resources Project
9
'',,1 ' . .4 44, • -4
CA P B 1...,Eki Nii L),I 1\1 G A LT.L'.F.),,,,I 4,1 A[11 V E
DOVE MOUNTAIN GOLF ORO VALLEY GOLF
COURSES-,., COURSES ,--,.
2.500 AF/YR , 4..AF/YR 1 .
650 TDS i 650 TDS .
....- ,.
''.-:...........:4#####Y.) ''..•.......4.116^::
.•.•....... .
",-,:.....7:,........,............., Q•:,--........:.:.,....,.....:...2
4 4
CONVENTIONAL , TO
WATER DOMESTIC
TREATMENT E-ZONE SYSTEM
PLANT 14,00 A,R STORAGE CAP i isoo,,,,yR 7,,,,,,ApyR STORAGE 13.500 AF/YR
CAP CANAL 650 TDS 650 T DS 650155 450 TDS
-.'... .9.'-..
CAP PUMP
STATION
GROUNDWATER DEFICIT
3.500 AF1YR NET
GROUNDWATER Jo NATURAL
WELLS ,,! — RECHARGE
6,000 AF/YR \\A 2..0 AFNR
200 TDS ### 200 WS
• .,.....,- ,..........,.......• •.....•. .....,..•,••.. ...........,-. ,...... •..... .
Renewable H.ater Resources P rili,,.•S I
,
..
OPTION 1-
3 , I
ri itc s on Water I otab e Water
Delivery System
ii- i r ! , -11 I I
1 1._: I. " IfilitifilTlif,
, F
Li
E-ZONE RESERVOIR Atio
- 1_______ .
--TT' ecosTER STATION • I I -''
ILI 16.
-71t7-4:* . '
- *Iikfie-1: •
-.4"; 102-
'- - t ‘., r..-
E. ,1;;.... ..marit,----:-.,,,9,',,fi-i,.•,,r. ,6"1. 1--r-,
II • I. .i ' ••••-,i..,-.Z,, Alliv' ; -.
•••1-,-, l'rir. .,-ALIttlf-f,-,,,1*' '. ‘--V,ITNII 1
..;•,..-.3i 1 1
grairilia ...:1,\`).Ili ,
7 • - .....vggimgriv, .;,,,-,,Pr-, SI= il 1 ,
, IllialiNliiitiTrA, _..-,---_,---"It,
sc
i 1187,"ffillidra :El-re , ,- s-,-. -T---- A,::•,. ___L.,
CONNECT To Exisli ..._1,..nr. , , :.IR? ....,,...,
BOOSTER srAn ON --1,-,". 1,1...,.,:y e 11.,.y •., aa.....i!,:=,..., _
--,___ L - • ,., .
4.101.41fi - r t.]: r',:xl.zei ,, -cr.. --
.g..tglipa.: T, -p-A. iie4.71 , I -' --i‘ ...'
inillivrim.,------ Ly,.. i 1..\:,..wr,....__ --4-.‘•,,,,,., C-ZONE RESERVOIR AND
Ii ia ilikSTATION
P.1 a .:1PI,,s..allt,,, sr
$552-$752/ac ft ':iermil.,-.7..i: ,,,,,41-,
,v
,
,, fakl PiefErVi., ( i,;,..7-44:4....0 k ht A; I
(POtap I e) - -mar-. - .36-.... . ,...:-..,;,,,,,,7..-4..-•!,:.^......,2.I H I s, i ,4'4,P"0
. ,. ,•••
Renewable Hater Resources Project
10
OPTIONS;
Management cl Costs
,......„,,,,......,.,,,,.,....:„..„.......„..„:„.,...:.„:„.,,,....„..,
■.....
Onsite Cost Offsite Cost Total Cost' TOV
(Slat) (Slat) O&M (S/af) Initial
Offsite . Water Water Cost Capital
Option Name Potable Turf Cost Recovery Right ($laf) Potable Turf Outlay"
A Raw Water Delivery System(turf) 0 140 351 0 106 236 0 833 23.5
B Tucson Water Reclaimed Water 0 140 227 0 0 600 0 967 17.6
System ,
C TOV Reclaimed Facility 0 140 984 0 0 199 0 1,323 53.1
D CDO Recharge and Recovery 0 45 120 260 106 229 715 500 26 3
Project
E NW Raw Water Delivery 0 45 123 260 106 233 722 507 33 1
Cony.Treatment and Direct Delivery
F 52 45 363 0 106 303 824 817 49.6
of CAP Water
G R/O Treatment and Direct Delivery of 52 546 0 106 381 1,085 73_5
CAP Water
Blend-Conv.Treatment of CAP and ' `,
H Groundwater 38 45 202/363 0 59/106 314/303 613 817 49.6
Tucson Water Potable Water 7- .,
Delivery System 52 0 0 0 500-700 552-752 6 1 -.I
' Final cost to consumer will be adjusted to account for groundwater withdrawalsrr,,,iii !
$millions '�'
.))1
J,.',,/7 p
fes' F
/s b A
Renew'bill'Hider Resources 6 P of{'('t . ;F
,e(JU.vCiEU.-
OPTION S
Impact on Rate. P
(1) (2) (3) (4)
Cost of Water Projected Water Increase from Average Monthly
Option Name ($11,000 gallons) Rates Existing Costs Bill
A Raw Water Delivery System(turf) 2.56 4.74 90% N/A
B Tucson Water Reclaimed Water System 2.97 5.15 106% N/A
C TOV Reclaimed Facility 4.06 6.24 150% N/A
D CDO Recharge and Recovery Project 1.95 4 13 65%/48% 39.80
E NW Raw Water Delivery 1.98 4.16 66% 40.04
F
Cony.Treatment and Direct Delivery of CAP 2 23 4.41 76%
Water 42.45
G R/O Treatment and Direct Delivery of CAP 2 87 5 05 102% 48.72
Water
H Blend-Conv.Treatment of CAP and 1.88 4.06 62% 39.07
Groundwater
I Tucson Water Potable Water Delivery System 1.45—1.95 3.63—4.13 45%-65% 34.97—39.80
(1)Includes only cost of water supplies.Excludes all water company administration costs,maintenance,upgrades,and other costs included in the
OVWU rates.
(2)Cost of water plus$2.18/1,000 gallons for existing OVWU administration and other costs.
(3)Existing water rates are approximately$2.50/1,000 gallons.
(4)Existing average customer monthly bill is$24.12 for 8,000 gallons/month New average monthly bill includes only additional cost of water—does not
include all anticipated cost of service increases.
(5)Potable water to be blended with 2,500 of/yr of groundwater at 200 ppm.
:p.'^'��Y.�Ri
y4,y.;y
,
Renewable ff.at a'I'Resources P1'tl/'d
tMDf�
11
• .RECOMMENDE.D OPTIONS
CAP OPTION TUCSON WATER OPTION
PHASE I:
OPTION(A) OPTION(B)
RE RECOMMENDED TURF Raw(CAP)Water DeliVery System Tucson Water Reclaimed Water System
ALTERNATIVES
Total Incremental Cost:
$2.60 $3.00
($/1,000 gallons)
4 Acquire additional CAP water rights 4 Negotiate with City of Tucson
41 Set up partnering arrangements with Town di Begin design and construction of onsite delivery
of Marana system
Recommended Action • Begin property acquisition 4 Potential acquisition of effluent rights
• Begin route studies and property acquisition
for delivery system
PHASE II:
OPTION(11)
OPTION(1)
Blend—Conventional Treatment of CAP
RECOMMENDED POTABLE Tucson Water Potable Water Delivery System
and Groundwater
ALTERNATIVES
Total Incremental Cost
$1.90 $1.50—$2.00
($/1,000 gallons)
Acquire additional CAP water rights 4 Negotiate with the City of Tucson
• Set up partnering arrangements with Town 6 Potential acquisition of CAP water rights
Recommended Action of Marana and MDWID
• '
Renewable Water Resourc•es Project
•
IMPLEMENTATION FLEXIBILITY
. .
on-loN 0 F"-ii ON E!,
TURF WATER Krtw(C,AF) TUOSO n Wat
• Recii WYA t or
i 1/1
cs,
\,111111111101111WEIWINAMININNIMANNAMININA#
1
I ..F
f516-,.n -Conven tion a! Tu CA-30 VVE0351'
POTA5LE MIER
Treat rent- CA? t He W'ate.r
ctiiGiouriwat.ryr I Deli v5ry Sys torn
Renewable ITT-ater Resources Project
12
IMPLEMENTATION
"A Pe rT.:
AC1IVITIES
•
,
Opt
5 to
10,car,
Fiwt
Pert 41'pit
4, 9,
Renewable II ater Resources Project
QuEsTioNs FOR TALsK FORCE
Rene)vable if ate;Resources-Proket
13