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Staff Report 13 03/19/2001
City of Petaluma, California 13 Memorandum �' City Manager's Office;11 Eng1Lsl Street,Petaluma,CA 94952 (707) 778-4345 .Fax(707$778-4419 E matl:cityinjz ccpetalama ca us - Q• DATE March 2, 2001 TO: -Mayor and Members ofthe'City Council FROM : 'Frederic k C. Blonder City Manager, : • � - : SUBJECT: Urban Water•Management Plan ` Attached are the Urban Water Management Plan and ari Executive Summary. This item is scheduled for Council consideration at the March 19th evening,meeting. A public hearing will, follow at the April 2nd Council.meeting. ' If any questions or comments, please contact Tom Hargis.. , • • • • s - . _ • v t 7:i, r Cam • ;- L 2}'F.�'4�.q y 'i; t 3"1'•" • • :J f'l4k; •<3 i '!-'4 4.L2! 4 -1 ql 43.1,1."$ f� 3 zf a w•:fr tt�� .ti3-i�k�B aS�:Sti '.:Q)FA.,iis t(ii 4A '3 b.(R-4 !C"?• ,�'7 - •:-" .u�- `r, G.:. nr.� .,.t ,P r "'Jti'wo a• j -°•'f i Imo. ; � �� v tte`.S'k'rf':rttilY'trrfi r�i Alt • • • • • • • • • • • • • �j da 1•ap O e • •• • • • • • • • u ., , • • • • • • • • • • • • • . EXECUTIVE SUMNIARY • • SONOMA COUNTY WATER AGENCY • URBANINATER MANAGEMENT PLAN 2000 • Prepared: February 20, 2001 The plan was prepared by:Sonoma County Water Agency with participation'of sthff members from: - • City of Santa Rosa North Merin Water District City of Petaluma City of Rohnert Park City. of Cotati Valley of the Moon VVater,District, City of Sonoma Forestville Water District • Note: This docurnentis e summary of the content of the Sonoma County Water Agency Urban Water Management Plan 2000. -Copies of the original report are available for public inspection or can be obtained from the Sonoma Counts/Water Agency, 2150 West College Avenue, • Santa Rosa, CA 95401. • • . • . • •• • • S §15,15Afff.SiV4 ;5r4171.:1;V3- -55 . • . •. , • 05.5,•,..t14 71-taiticiCi;AM0140a :)510 -HALA 1:1917A1r45 RAZI-111, • . . . • • • • • • . .7. • Cf.t fii.cZ• . - • • • • • • '..41101E08 '44t#tO trtpli arjc sritj V qt-,fik, 5:5;;isr Ildtc:F. (2.3,-cf "C't ntUri-9. crsrr • • v.ra• • • .$ONOMA.COUNTYWATER•AGENCY TheSonoma"County Water Agency'(Agency)`was created by California state legislation,(Statutes of 1949„Chapter 994ias amended) and is empowered to produce and deliver potable water'for municipal and industrial purposes; prevent the waste:or diminution of water supplies; control and conserve flood and storm,waters to reduce potential damage to life"and property;provide sanitary sewage:services„and:;provide;recreational services in connection with flood control and water conservation'activities: The Agency under'the direction of a Board of Directors that, for governance of the water supply system, consists of 'members of the Sonoma County.Board of ,Superyisors.1 ThetAgency:delivers water, on a wholesale basis, to customers'through>the Agency's water transmission system.. The ' primary water customers; collectively known es!the water contractors, consist of the cities of Santa'Rosa,Rohnert Park, Petaluma, Cotati, and Sonoma; and the North Mann;`Valley of the Moon; and the Forestville Water Districts. The responsibility Ifor, supplying water to the water contractors is entrusted;to'ttierAgency through an agreement entitled,.. , "Eleventh Amended Agreement for Water Supply"which was originally executed in 1974 and most,recently amended in 2001 (Eleventh Amended Agreement). The;Agency'also provides;water, on a.wholesale basis, to additional water purveyors; including, but not limited to: Mann Municipal Water District; the Town of Windsor, and the Lawndale Mutual, Penngrove, and Kenwood Water Companies. Collectively, the water'contracters' service areasreach<,from°the middle of Mann County northward to Santa Rosa, bounded by the City of Sonoma to the.eastand',Forestvilleto the west Figure 1-is:a General Location Map of the apAgency's watertranemission system andservicearea. REGIONAL URBAN WATER.MANAGEMENT PLAN 2000 The regional Urban Water Management Plan (UWMP 2000) has been prepared by the Agency as required by California Water Code, Sections 10610 et seq.. The UWMP' 2000 'is intended to •serve as the Urban Water Management Plan for the Agency and its„eightpnmary water contractors:? Covering;the Agency and its eight water'contractors,the UWMP 2000describes the availability of water and discusses water use reclamation,and water conservation activities: The UWMP 2000 concludes that the water supplies available to•the;Agency's water transmission system, and to the eight water contractors that this plan'covers, are adequate over the next 20-year planning period. _ The evaluation.and conclusions:in the UWMP are based in part upon assumptions about the most likely outcome of decisions of regulatory agencies over. the 20-year planning period. The Agency,recognizes that regulatory agencies may make different decisions.ortake differentactions than those assuihed`by tt e;Agency,.which mayaffect the The Board of Directors for governance of the sanitation distncts differs''from the Board of Directors for the water supply system. 2 It is assumed that customers that are;suppliediwith water;via.the Agency's transmission system and are not water contractors will submit individual UWMP_s;:as required; Page 1 (?. 2CLa1ft '"1`� J'� *iFS •C�.L:tC'u l:iC &'dt @.ji:iL+t 54,...1,`.'t its 5'S7y:4:54 rte, i-.37:4 -flfr.. a(' x.t '' 1,4.t•Citr 5 Y•L _ iS]! 97t:C! 'a....f.a. 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II •)‘sk ...0 ...,,,../..,....k? _ 4•-•_, nrl-cmcc.caiTce;PcCe:44.1.. 8,001?".r--,,::,.., ; , lAkIT . , ; ; , ; • • I' IT.t... ,,,,-.4 •ah•Tc411.14:2f:at. ..,.- , , '-'• , TYPICAL MULTIPURPOSE RESERVOIR ..,: . -.. 6 coToTE CA24- UKIAH,: OF THE G. HEIGHT -• 151.FT. . ,•1 ili - . , . ,. • • , . RISSIAN RIVER•PROJECT ., _ . " LENGTH , ' 321T '' 71 _ L. ., , . TOP. ELEVAT OH 734'Fr.: • '3,- 1 73 . 7;- ' ELOCC COMM POOL - _ — • •34.'. SAELWAY EIEVATION • 745 FT , L. _ 6010011JM DI.Kt_ . •• P ' ,...._ 8 ! TOP, OF WA ILH SUPPLY POOL 737.5 FT. I —(A I STEC AL , 9 . , . . ; ■ • ' • 7 ir;‘:1 • , ■ • • ; , ; , I HOP LAND '' . • ., ' . . ,•,.i.:•,•i . -. . ' . . , , 1 , TYPICAL WATER COLLECTOR . • -.. . CI F THE ` - RUSSIAN RIVER PROJECT iZ.... • . L , I .. , ; L 7 i• ■ I ; • .f; fr • ;; ; ll II i • ; ;;;• , L . . ... ; I -0 VER D AllE )' ; ;•L, ;•'S 111;; Z,L'i 'C.' ';•;•;;;;;;;:,1 ; LE400(1•40 WOW : ,. , .,.. ' ,•:fle-a1111-.---mOTORMOLIsING C .: • .., LEOHOLF•1 COU.TY Y CA ; . ,, •,, . 510• ACCESS LADDER , ,. • • . --- . . . ! Ii III.I.5111„,01111101111,1,1iitTNII I 'I' CONCRETE CAISSON k- •-• LAKE.SONOM A • q \\ . • T--1.1.-,'-'- SAVOMA5',... -r_i.... ' •._ • .1 „dr-RUS9AN RIVER•WA IIR SURFACE .. , ... ... • . ; ‘.....- '!'•:',',l•RESERY01/3- 7 ,_..... . , , '--.-. ...... :WATER SUPPLY POLL 212.03DC kr '----I i_ -, T ,„ •••• '' ' 'i1/4.,"-‘14ATURAL:FILTER '• L■•.;., ' 4 il I . .... I 1/4-N 7 n.booliiaimcc:pa.% 130'2ao CAS L •-,‘ :,_ .. \ , i.•03.1.2.0— ..... ,' " . DEEP WELL DAME PUMPS ' C - ' % ' \,- 41,461i Pat 13,clooris _c , _ 0.40, -, • :. , . .:: : • PERFORATED I.AltRAL INTAKE PIPES ••! ••• ;•SidIRAIX . ‘..26.909iPAS• ';ii•DAV f:'J''7. . • ‘.• '• ' .-. L N1/4 .:tj t Ct.,:' .. I • l' . .:C.. .1\\'•.••- I' TOTAL 3SI000IAS r It \'a i WARM Nos o All- .. ' ., I , ...., . _ . , yHEALDS,ZURG 1 - . •HEIGPT 31O TT. . . „,..... - _ ... .. , i I . , , 'LEON, 3.otitr.- , .r - - ' . --- - _.. top ELEgATI4w4 i k'- ' I-C'\.4.1'519:11:t. . WI N D S OR ' - ----77(12. - • ., • , • • el3iblikiI1E1E.YAliottI-• •j I:1“:40ii 1 FT GUERNEVILLE ; " , L,,‘ • 1 ‘ - •I';' ... ;•• 4 yi '' 1,... :1444 ‘ • , • TOP or wATER sUPPLY"•• -: 441,41 7'.r ']-:.:::.;i',..,Te.6......... ... i 44..VA . ' /_ It, :,:.:',??,.,,:: ,..,... ,`' , i , ; ‘...1......::• '.k\':'••-, :::',?•11; - '',C.:'N 7,4 :;:•'•.1'iNe / 14;‘:tiAtirP..:. 1 . \-.• ' , ,: :"'./...“; '■ ....0 . ' .e.'•R .-..A:.,.:::..'I.r 4.14 0 " - FORESTNII I F .•••4 . / • 0 ‘_•,,`;' _ . r,I !•1',• SEBASTOPOL* Pig ' VALLEY Off • - .70,m.POHNERT - E mooy 0 ' , !, • . te 3Ay . . e • -s• law-CAT, #. • -i-- •'I:flea l ); %;7 ; . • • 1 L V H i . , ,;., ',, ' 'N C•NOY A ' , / t•Y,, •.r 1 ' •4‘• - • 1 ,.:, -, '. PETAL(.-.N4A.,'„, ' .,.. . ? ; .., (,., ..,....L.„. ...- .re-.7 4:5-1tii,i4;-.. ''',. '._. •').'-'9•..e... ,it ...."*....... k ... • 0 T _ • ,, ,, . . , . 'r ,..::...;%,, ./...‘::11. t: e'.fir 1 jr : :, . 4* ,, 7, 0 • - •-&\, .,,.,..„ ...... ....:.. ..„,,..,. .„. . ,;.:4•:.,:::::::,. 0...„. s;•---------.::„ ..., -. . , , ,,:•:,; .,-, ". , - ..•,, ,,,_ - •: - - - • . ".•,.,. ., .--:•-•:.:?.th,(titieke .--•., movs... loc.Issa. y- c-- • -- --, '.- ( .: • 71 ..- . .... :!.: %.1.....-•. -4z,- ?4•440.' ‘.0.:... , ,-' '/ .. :{4 ' -", 'JO: , ' • ' 3,) •) • . \ •..• TitifteX.WRIASS'A. ............. ) '-•i', i I ... . ...,),::,‘.........w.t.41.0...,,,..w.....I., •C(44; &,-...6„. • . ''....Arr‘\•'•:• \ . ' '1 . ' ' 44.1 - •/... - ... .-. ...••.-.i 7. _:,-444:;Z.V.:3;,...:•..T.7-1-,: ' '. '''1:;;637 /,. t) ,, . . . i ' ?' , SIN 4:- ';',;.!If",;',,', :3.: I 5.; f.'A - / -41,c',z---*---- • '• 8,4 y i :.tc.„:_,.....:)„.:.:•;:;,...;.....: -,..,.: ..•arr-.„:. . . SAN RAFAEL' 7 ••‘) . , . • . , ' 'FORESTVILLE :- ' '444. - 'k(1F-41 --_- -.. -I .._ ,.. Ho Wilkailialli. ',1 c•-•-.. . T-.-?" ". Th- • . • . _ . , cor 1Z! • - -- ' ;ril Frri, , LEGEND - • (11-QTA -\>'.. .. . .1. ,D3 - 77-----,..: STREAM CHANNEISUSEDFORAPMBLICTWATEM;ISUPPLV .4 . t.):■' . . 4mxtar.p. WATER TRANSMISSION . - • '• 176. •! L , --."-• • ..) --': IRAN 0.S.00 -71 P. . •600.1113• NORTH MARIN'TRANSMISSION PIPELINE . _ ?", 8.4 Y (ItT--- . . r • q - : , .z --... COLLECTORSXPUMPINM PLANTS) . . - . . 4 en LO' 0- -T- - -.:24:k‘..4 : t il.„;. LS' , C-2:Th \ ,:_-____ ., •' - : • .-'• , - ' 1 /17z?, .- .1,\ -:.----' '':-:\,- : '• : ; ; ; lj ; •Ii) 0 .;;k3•E ;:' , ' boosTERsTAnota . . ' I, SAN ,I, "'' gi- D., 4..• ,• , •.• '..i•0 STORAGEtTANKS , . • ill, FRANCISCO II:- --------; . 1 -4•1 ' ',, 1-g:-.. ' , SCWA'CONTRACTOR,SERVICE'AREAS . - . . II L ,: , .1 200D , „ . _ .. .Z ' T_ . . • , atNERAL LOCATION 1 ...M . PREPARED BY THE . * - . 4' -0 • SONOMA. 'COUNTY WATER AGENCY .1! • ' .21S0 WEST COLLEGE AVENUE . ,... . , . SANTA ROSA,tCAPFORNIA . • . . . . - . availability of water and the:adequacy of the,.Agency's transmission system. The Agency concludes, given the facts currently available, that theassumptions in the UWMP'2000 are reasonable. . • •i Local planning'agencies choosing to consider the?UWMP'2000 as a reference for analysis of water availability are encouraged to check with the Agency or their appropriate water contractor for updated information regarding the assumptions on which the UWMP 2000.is based. In its analysis of the availability-of water for diversion from the RussianRiver by its transmission systemJthe Agency .'01,...r, -bu... (3'-• I aa.. Bt �:'= f- -i'i «'. ,. �- ... .._ L ..J..= ..7Lh L^ 7::., ...a..r ...:• m assuesjthat the current interim flow schedule for the Potter Valley Project3,that:has been voluntarily implemented by • or as a requirement of-PG&E's Federal Pacific Gas and Electnc.COmpany (PG&E) will continue edher,voluntar.. w r Energy:Regulatory Commission(FERC)license. The Agency talk) assumes that the water right.perim terms that the t ( ) ludes'in new,water rightspermits will be,enforced. The permit State Waten•Resources Control Board SWRCB now establish the seniority of the Agencys water rights in'.relation to new water;rights. Finally, the Agency assumes that the listing of three salmonid species as threatened under the:federal"Endangered Species Act (ESA) will not reduce the amount of water it can supply using its-`Russian Riverdiversion facilities. With respect to the Agency's ability'to deliver water, the Agency.assumes that:it will construct and operate the Water Supply and Transmission System Project (WSTSP) approved by its'Bbardof Directors in December 1998 without significant changes to the project Project 'changes could, however, be required by state and federal agencies; including National Marine Fisheries Service(under the ESA)'and the SWRGB(which implements California water nghtsi delawsy If construction and operation of the WSTSP or an alternative project to meeftne,demands of the water contractors is delayed, deliveries by the Agency to its water'contractors will be%limited to the capacity of the transmission system. The State Department ef.HeatthrServices (OHS),recently evaluated the adequacy of the Agency's existing system to meet the demands of the water contractors:° . COORDINATION WITH'CITIES, DISTRICTS, AND'OTHER'%AGENCIES The Agency coordinated development of the UWMP 2000 with all ofthe:water contractors+and staff from the Santa Rosa Subregional Wastewater System, the Petaluma Wastewater Treatment 'Facility, and the Novato Sanitary District. The divisions within'the Agency-that assisted in preparation_of`UWMP 2000 include:the divisions of Water Supply Planning and Resources,.Operations and Mainteharice; and Environmental'Resources and Public-Affairs. In addition, Agency staff;iin'• the capacity of ;managing ,the Sonoma Valley and Forestville County Sanitation ' Districts, assisted.in.UWMP 2000 preparation. . _ _ . • • 3 PG&E diverts water-from the'Eel River into the Russian River through the Potter Valley„Project Powerhouse in;Mendocino County: 4 The DHS■Report is available for review at the Sonoma County.Water Agency: Page 3 DESCRIPTION OF THE SERVICE AREA Climate; The climate of the Russian River watershed is tempered by its proximity to thePacific Ocean. In common with much of the.California coastatarea; the year is divided into a wet season and a dry season Approximately 93 percent ofthe annual precipitation normally falls during the wet season, October"to.May, with a large percentage of the:rainfall typically occurring ,during' three or four major winter storm`s. Winters arei cool, below freezing ..� rot temperatures are seldom,experienced. Summers are warm and the-frost-free season is ?Orly long, varying from 224 dayssinmSanta.Rosa'to 265 days in Cloverdale: Average,annual,precipitation over the Russian,:River Basin is ' 41 inches, ranging from about'22 inches over the southern portion of the Santa Rosa Plain'to over 80':inchesnear Cazadero: The,quantity of rainfall increases with elevation,=with the centerof greatest precipitation occumng;over the highest ridges. The climate in northern MarinCounty follows similar"patterns. Employment Within the water contractors' service.area employment is primarily within the public,and'private servrceand manufacturing industries. 'Within the'region; there is also employment in the agricultural"industy with' the greatest emphasis on'vineyards, livestock„°orchards;-silage crops, and timber. In recent years there has.been,a growing trend toward telecommunications, light industry,and commercial development iiithe region. ' Land Use Land use within' the water contractors', service area is characterized as suburban: , ;Residential development is'more densely concentrated in.the cities otSanta Rosa, RohnerfPark, Petaluma, and,Cotati than in Forestville, Sonoma, or Valley of the Moon. In the North Marin County area residential development is more concentrated in the city-centered corridor, which runs-no rth to south along Highway 101 and adjacent-to'San'Pablo Bay. 9' 9 Y 1 Population Projections: Figure 2 shows the projected population growth and the overall rate of;increase for each water.contractors, Collectively, the population;within the water contractors' service area is expected to increase by approximately 28% over the next twenty years to a'total:population of approximately 439;961. figure 2 PopulationProjections for.the:Water'Contractors. 200,000 _North Mann 180,000 ' ' o .160,000 —��� a –Petaluma �t 140;000 'n '120: 000 :Rohnert Park, a. ,100;000 Cotati ' to 80,000 m 60 000 ,Santa Rosa . c 40,000 a 20;000 .4_ _Valley ofdthe.Moon. TSonoma 2000 2005 2010 2015 2020 Year _Forestville • . - - ;Page 4 .. AGENCY:WATER SUPPLY AND DEMAND • Supply^Functions, of The Agency: The Agency 'has two principal water supply functions: delivery and flow regulation. 'The,Agency constructs and operates-a water transmissionrsystem thandelivers water to public and investor-owned water distribution systems In Sonoma and Mann Counties. The:transmission system is financed, • constructed,and,,mavitained pursuant fo the Eleventh Amended 'Agreement It is the delivery'function that is the subject ofthe Urban'Water Management Plan 20 . .Water'Supply Sources: Thepnncipal source ofwater-for the Agency!s watertransmission system'is the natural `flow of[Dry Creek and the Russian River, augmented by diversions torn!the Eel:River made by,PG&E's Potter Valley Project A.secondarj source of water for the Agency°is its H.threeproduction wells locatedwestof theCiI' of Santa Rosa; near the Lagunade eanta'Rosa.. • Agency's Surface Water Supply:' Digital computer hydrologic models are used to analyze the adequacy of surface water supplies available to the Agency. To determine the water available at the Agency s water transmission system intakes, model runs•were made to:simulate,differente historic'hydrologic periods as,specifed in California Water Code Section 10631(c). These periods selected.from the historical hydrologic record'to best • represent an average water year, a single'dry water year, and multiple'dry water years: For each"simulation, the model includes.the years immediately prior to the water year(s) of interest. Inclusion of these prior years is necessary to establish.-the beginning :reservoir conditions and essential to avoid :having to assume beginning reservoir storage'levels that would control the resulf sof the modeling. . .• •• Continuing sedimentation"of Lake Pillsbury, Lake,Mendocino and;Lake Sonoma, and small'increases in diversions along the Russian RiVerthat could'roccur,will'result in a',gradual small reduction in'the-water supply available to the Agency's water transmission 'system. Based on historic rates of sedimentation, of Lake Pillsbury and Lake Mendocino and estimated sedimentation'ratesfor Lake Sonoma, this estimated that a reduction in surface water supply-available to the Agency's water transmission system will occur at a rate of approximately 1,000 acre-feet each five years betweeninow:andthe.year 2020. --I To,represerit an average year, 1962^.was selected. Water year 1962 was slightly drier than"average and was preceded:by two similar years The current average year surface water supply available to:the"Agency's water ' transmission system,.is 212;920 acre-feet: . . • To represent a single dryywateryear, water year 1977 was selected: Water year 1977;is the single:driest year of record. The current total single dry year surface water supply:available: o the Agency's water transmission-system is 87,970 acre-feet. • To represent multiple dry years, water years 1990`through'1992;were selected: 'While this is not the driest period ofIrecord (1929-1932iand 1931-1933rwere slightly drier), it is the driest three-year period of record fon • which Potter Valley Project diversions for the three-yearperiod, and critical•prior period, can be modeled. The' Page 5 currenttotal multiple dry year surface water supply_ayailable,to the'Agency's•water'transmission'system is 127,830 acre-feet in the first-year, 127,660 acre-feet in the:second,year,and'127,460 acre-feet•in the third year Agency's Ground„Water Supply: In addition to the surface water supply frm o the Russian j iver described above, • .the Agenncy has three existing groundwater,wells. the Santa Rosa plain with_a maxrmumrproductioh capacity of ;7`6'million;gallons per day (mgd). These wells:are locatedron Sebastopol Road Occidental Road and Todd Road _and have capacitiesof 3:6'mgd, 2:3 mgd and 1.7 mgd, respectively: The reliable capacity of the Agency's existing wells(2/3 of the capacity with the largest well out of service).is 2.7 mgd;,or 3 025 acre-feet peryear(AFY) k...uF6t, pry r. ..._. Total Water Supply;Av_ailable to the,Agency The current and projected wateLsupphes available to the Agency's at .x water transmission'system.are shown in Figure 3:5 The'.water supply deemed available in Figure 3 is based upon the multiple.dry`years 1990 through 1992 (and the•fourpreceding-years). The apparent decline in water availability is due to the estimated rate`of,;sedimentationoltake Pillsbury, Laker Mendocino and Lake Sonoma. It is"estimated! . , that a_reduction in,surface water supply:available to the Agency's•water transmission system wifl.occurat a,rateof, approximately 1,000acre-feet each five;years:between now and the year 2020 N! Figure:3: Current and Projected'Water Supplies • . Multiple Dry Year'Hydrologic Modeling Results • • • 135,000 m 000-,- . ' 125 000 ,_,r Arc '` m 120,000 ® {® ® ®K� i Groundwater 0 so 1:15;000 ® .�k® ® � a-, . oSurfacewater . ..,il i -1.10.000 :, lig® ;®il. ". ”a 105;000 � , - in, 100,000 .. - 2000. 2005, 2010 2015 '2020 - Year • • r..:•-•,•:..3. . • Past; d'Current,and Projecte Water Use The.current and projected wholesale water distribution by-the Agency is shown in Figure'4:,The historical water distributed in water years 1 9901an1 1995 was,51',439:and 53,644:acre-feet, . respectively. Theiannualrrate of increase from water years 1990 through 2000 was,approximately 1:7'percent rr-s c _ ., • ;r 5.The Agency s•existing`water rights permits include_..terms.that limit the amount of water the.Agency canjstore in Lake Mendocino and Lake;Sonoma, as well as"directly divert and re-divert at Wohler Mirabel and'other authorized points of ak =,idiversion!,For purposes of analyzing water available to`the Agency's transm UWM ission system'in the' P`2000 dais assumed that any applications and petitions necessary to change the limits in the Agency's existing permits will be approved by the State Water Resources Control Board. Page,6 • • • Figure 4: Projected,Agency Water:Distribution O act tg CrtiJ ` R. 't 80 000' tr rrh j..:.y. ..._ K � �rte, _y z �•„ . m 70 000- + ® 1p a•t 1 I -} _ T E Other Users to which 1M ..a} m 60 000• � �, {® ,the Agency is obligated 'C 'I' I' w g),000'. .t .*hi 1 ..., -. ^ .•� 1�:•.7j X31 "-.`R. 1I ', ®� ,�® ® • ® �® • °to definer water '9 y9 Jb = 7!c 't=g 40,000 , ® '`� 4� �'i®'' =®i ® 4 2. ;n .i 3 ®Water Contractors 30.000 Eg = . ' ® , T n .s, t ._t., 4-.2 I ∎ a ∎ � �m 20,000 M „ � i 10,00Q ^:/G. a !SA®�,s.® y.®� Ma ,eau s.t 7-11 :; g;:- • :--2000 20•5 :2010. '2015 2020 - . - = - Supply and Demand Comparisons: Figure.5 compares the-total water supply,available to the Agency's water transmission system in multiple dry'wateryears with,projected dotal water use over the next 20 years, in five-year increments. C Figure 5: Projected Water Supplyyand Demand • Multiple Dry Years • w 4 140,000 - - • 120;000 • 0 ® 4 - 100;000 - - 80000 Supply totals • 60,000 .._ Demand.totals 40:000 • 'r1 20,000 -_ 2000 - :2005 2010 2015 • 2020 ` • • Supply"a id Demand Comparison: No'defiats-are projected4or the'Sonoma,County"Water Agencythrough2020. Page 7 • • CONTRACTORS' WATER SUPPLY AND DEMAND As mentioned previously, the Agency deliverewater, via its transmission:system, to the eight water contractors covered by the UWMP 2000 pursuant.to the Eleventh Amended Agreement. The Agency s Board of Directors di certified an Environmental Impact Report`for a.Water Supply and Transmission Project (WSTSP.)that proposes to expand use of the water supply provided by Lake'Sonoma and the,Agency's.current"water transmission,system. The WSTSP will provide additional supplies to the water contractors and was p roved'by`:.the Agency's Board`:of • Directors in 1998. The Eleventh Amended Agreement is the institutional structure:under whichtheWSTSP'will be :e constructed, operated,.and"maintained. f - w.., r . the eessum `r _ pli v �ble to the,water contractors'�follows Projections reflect A description of current and projected water supplies avada ption that the quantities of water proposed.by the;WSTSP will be availableto>the water contractors: The Agency assumes that it will,construct and operate the Water Supply and Transmission System'Project (yysTsp) approved by its Board of;Directors:without significant changes. Project changes+could, however be required by state. and federal agencies, including;National Marine Fisheries Service (under the ESA)and:the SWRCB(which°implements California water:rghts laws): • The water supply defined to be available;.to the;Agency;based.on hydrologic modeling, may beavailable to the water' contractors to meet;the demands;thathave been in the•UWMP 2000 over the 20-year planning penod.•Any increases in water "delrvery' beyond'that which is authorized in the WSTSP will require completion of-additional environmental documentation:addressing,;growth issues and the impacts of such additional,delivery to•other Russian River beneficial uses;and'will require application(s)to the State`Water Resources Control l ol Board for.additiona water `! diversion or re-diversion'.nghts. In addition, the.Agency ands the.water contractors,that require additional water supply will need to execute;additional appropriate contracts increasing their'annual delivery entitlements; CITY OFSANTA ROSA, • Water Supply and Sources:: Figure 6 shows the current and projected water supplies available to the City of Santa Rosa (Santa 'Rosa). Santa Rosa's entitlement to Agency transmission;system water under the Eleventh Amended Agreement is a maximum average monthly delivery rate of 56.6 million gallons`per day(mgd) with an annual limit 01 29,100 acre-feet (AF): Santa Rosa currently has 7 operational standby groundwater,wells.with a ,rated production capacity of 6:5 mgd. Currently, Santa Rota's.wept provide,no long-term reliable capacity because .,they are only approved by the State'Department of,Health Services for standby use (less than 15 days peryear). However, if these;wells were improveduin the future such that they could be used!on a;continuing basis;:thetrehable capacity (2/3 of the:capacity'with the largest well'out of service) would be 4.3 mgd, or 4 817.acre-feet per year (Am'). • Current and Projected'.Use:, Figure?shows the:available water end-use data provided,* the City of Santa Rosa • (Santa Rosa). The'projections are based on the"Santa Rosa Water;Supply'Analysis—:DraftJanuary-2001" by Page.8 • . , • . . Figure 6: ' urrent;and Projected Water Supplies' • City efSanta Rosa . . . . • 40,000( , • . • 0 35,00b _ . ' Di Other Water(City J ,T • IIEIMIIIIIPglndll•• groundwater, Agency 00 30,000: - . .. 7r-ii --- '111.111.1w2M-SW-ta, i.supply);_.. 116.111cliinN41 leiRe-csl-died. wdter: .i.. • - 0 25 000 tav 743 ::-4,4 ,17.4.1 rfth 4 • • 2.• 20000:: itral La Ki ri tztv . - .: - -irlitine*NOI • • • a 15600. ,-,.1.1•grA.c.stra •A • .a g; . .. ItAlliMmglimilloll, n;Purchased from ri co 10,000 L'''' --= . IL- - '""I' ,fr•-"' Sonoma County Water ' --- ' - • 2000 2005 2010 2015 2020 Agency ' - Year West Yost and Associates. Year 2005 dataiiS based on the low range demand projections; projections for the ... - - .. years 2010-2020 are based on the mid-point theiloW'prejectiiiins and high projections of this study. . - • - • . - Figbre•7,:iprbjeced End Use = City of Santa Rosa a Uriaacounted4or . • ' - . losses 40,000 . • , ' . 35,000 1111111111.111111nrin , D'RecYcled Landscape & ea O 30,000 . 7 .c.,..fin Raw Water Irrigation • o 25 000 0 , ar.411Jr.:11.111r;41 • 1 •ir Mk.fill 11.i-, la Commercial,,Industiial, , -, -.5 20,000 •iic..: , •: m,'-i mil amg--4,i/ Institutional, O I ibligqm Nmomeil. ,Governmental, & 15,000 ..a.a. .k...timm,...i, tt.--i- ritiem - .-- . 1 Erbil maim ralmraintA, Landscape . ._ 10000. "au . ' --2‘. -1-"'. . '-- 0 Single&,Multi Family • • 2000 2005 2010 2015 2020. Residential- .. Year ' • .. • • _ . . ., . . , • • .. . • . . . . . Supply and Demand Comparison: No deficits are'projected for theiCjiy•Cifi S'ant,a-Rosathrough 2020. . • , . -. NORTH:MARIN WATER DiSTRICT: • - ' -. Water Supply and SoUrces: Figure 8 shocks the current and projected.water supplies available to North Mann ; Water District (NMWD). NMWDs entitlement lo-Agency transmission system water under the Eleventh Amended i , . Agreement is a maximum average monthly delivery rate of 199 mgd with an'annual limit of 14,100 AF. NMWD also has a local surfacewater source from,Lake Stafford. Lake'Stafford source:has a safe.yield of approximately 2,000 AF. . • . Page 9 - ' • . . • • Figure 8:CUrrentand Projected Water Supplies North Marin Water District 17000: - • ❑Other(raw water-for' 411-- - imgation)' .. , , a 15000 0 13000 — k ? S T yI ❑ Recycled Water ' 11000. �. ®; ®€"'�'® `® ,. = soon. ', ®g®0 ® Supplier produced a' 7000 1,b01•114 S S ,-.I surface water' N 5000'". '■;a®WI S Purchased from 2000 ,2005 2 ^ 2010 2015 2020 Sonoma County Water Year Agency - Current and Projected Use Figure 9 shows the available water end-use data provided by NMWO. Data,wes provided for single-family residential, multi-family residential,commercial and institutional and governmental uses: Multi-family residential includes townhouses/condominiums, apartments :and mobile homes'. NMWD has no industrial account classifications and landscape 'is included with institutional and governmental use Raw water irrigation includes!setvice:to Indian'Valley Golf'Course and`the County of Marin's'Stafford'Lake Park. . - Figure 9:,Projected End Use -NMWD o Raw water.lmgation • 1.7,000i • - . ®r Unaccounted-for:losses 15,000;i 13,000,11 000,.43 ■ . ■, '. ' p Commercial V. 9,000, t , 7,000 .�® _ �® .4 ® •' ® Multi-family residential. • 000 i ® ® ® ® ° 7 • ;2000 2005 2010' 2015 2020 m Single family residential Year „it, ., . • Supplleand Demand.Comparison:No deficits are projected for the North Mann Water Distract through 2020. S"M1 • - .. .. • _. • •' • • Page 10 • • ' CITY OFPETALUMA 'Water Supply'and Sources: Figure 10 shows the current and projected water supplies:available to;the City of Petaluma: Petaluma's entitlement to A9ency transmission,system water-under the Eleventh Amended Agreement'is • •; '.a maximum average monthly!delivery;rate of 21.8 mgd with an-annual limit,of'13.400 AF Petaluma currently has yam+ 2'YT ^ice .- - • 11 operational;groundwater wells with a long-term:reliable°capacity;of approximately 3 585 AFY . ,:t •■"� Figure 10:;Current`and Projected-Water'Supplies City of "' " 15,000 - - - •- - a 13,000. ❑ Recycled Water 11,000 , ,, �._� +'7'®ucP';-'t ,�,, 1 'Su her roducid 9,000+. � � � ■� � ® groundwater • ■ ■" �ti® , Purchased from Sonoma a" 7,000.. '1 a 9 0 5,000 ® ® • 4a :5 = , County Water Agency I 2000 ,2005 2010 :2015. ,:2.020' • Year • - • Current and Projected.Use: Figure 11 shows the available water end-use data provided by the City of Petaluma. The State Department of',Health Services projected an approximate 2%;annual rate of growth for Petaluma and a corresponding demand of 1.6;945 acre-feet for the year 2020. • Figure 1 T• Projected End Use -City of Petaluma 15,000 ® Unaccounted-for losses 14,000 13,000 ,`a 12 000 ® � ® Institutional and • • 11,000 ®®��- • Goeemmental 10,0006'1®°- - ® I p Industrial • • m 9,000 ® � =MI m8,000. � ® ® ,� ® ,® ❑,Commercial 7000 . ,�rra1 �'� 'E • 6'000,- ®' � ® ' ® ®4® ® Multi-fmily residential 5,000, M MfM+5 � ing. - . 52000 .2005 2010 2015 2020 Single family residentia! Year • Supply andtDemand•Comparison:.'No deficits are'projected for the City'of.Petaluma through'2020. , 1114 • • •Page 11 • • • • CITY OF'ROHNERTPARK • Water Supply and Sources: Figure 12 shows'the current and projected water supplies available ao'the City of J t-r-W Attended y.... .•Rohnert;Park.' Rohnert Pa`rks entitlement to Agency transmission ;system water under he Eleventh ' Agreement is a maximum.average�montfily delivery rate of 15.0 mgd with an annual'limif of 7,50VAF`dRohneit 'Park currently has,39ioperationatgroundwater wells'with a feliatile capacity of approximately-4 481 AFY. • Figure 12: Current and Project Water Supplies .City of Rohnert Park _ . _ 11,000 } - • 9 000 p Recycled Water • • •® m 7000 P Yp • ?m 5,000 � �®ta 4 1' groundwater produced r ■a 3.000: U ® .�t�f ■ " "' N 1,000. ' ���� ® ® Purchased from Sonoma Water 2000 2005 2010 2015 2020 Agency Year Current and Projected Water Use: Figure 13 shows the available water end-use data'for the+City of`Rohnert '` • Park: Specific`information'on water`use sectors was not provided,by Rohnert Park therefore, no breakdown is shown. The projections f& years 2000 to 2020 are based upon an average annual rate of growth in new connections of'1.08%,Which occurred'from 1993,through 1999. Figure 13: Projected:End Use- City of Rohnert Park 11,000 • 9;000 mil 49 co o 7'000 ® 0Break.down by sector m' 5,000 I ■ ry not available 1 . ® . 1, ,3;000 . , . b;000 1 ® ® . ® 1 2000 ;2005• 2010 2015 2020 • Year • Supply and Demand Comparison: No deficits areprojected for the City of Rohnert:Park;through 2020. Page.12 • • VALLEY OF THE MOONWATER;DISTRICT Water Supply and Sources: Figure 14 shows the current and projectediwatersupplieSiavailable to-the Valley of the Moon Water District (VOMWD). VOMWD's entitlerhent to Agency transmission 'system water under the . „ ip Eleventh Amended Agreement is a maximum average monthly delivery rate of 8.5 mgd with an annual limit of • 3i200 TAF- IVOMWD currently has 5 operational groundwater wells with a total longterm reliable capacity of ' „ • • apamitmately,12008 yOM.WR is proceeding with`tplans; based upon aGyoundwaterMasterPlansleveloped • _ . byAuttidorff-t4t SCalmanini. (1998), td:developthrea additional wells over the'next;fotir.-years that will provide.an. additional longterm reliableicaPacity of tapproximately 1,456 P:1`( • - Figure 14:.Current and Projected Water Supplies . Valley of the Morin Water District • a Other Water(District • ;IS 5,500 - groundwater, Agency 4,500 supply) • • PIEWEIr_ik 114 a Recycled Water 4:2 3 500 ism:- no , Me,47-11MiMTLIMt41. gg9 2'500 M. IMIT .:MI.1614MbeoMRZ'M •••-•' kg& Erti ki3O >. 1 500 Supplier-produced groundwater 500 tesj ' 2000 2005' 2010' 2015 2020'. a Purchased from Year ,SonornaCounty Water Agency • • Current and Projected Ale: Figure 15 shows the available-water-end-use data provided by Valley of the Moon Water District (VOMVvD). VOMWD use projections are based upon an assumediapproximate y.9% rate of growth. The,DETIS has projectedivomwD's,water use at 3790 AF for the year 2010 based upon a slightly lower annual rata of growth., Figure:15: ProjectecikEndUse -Valley of the Moon Water District . ,• ' 5,500 ' • - • &- 4;spo 0 Unaccounted-for implinm losSes, ^ 3;500' fr.; -M1.7nrm,-,,itt., 1 2;kb:0 111F-svary Eat! a I laCtirPnWrciql• Ir3dustrial, • ' 101111011rillpilhill ,Institutional & Pig -111 i:sop uplusicOntletaqm ovemmenial I , MIK1 gab. Sindle and Multi amily • Residential '4-2000 -2005 2010' 2015 2020 t• • •- • Year • • • - • • • Page 13 • . Supply and Demand Comparison: No deficits are projected for the Valley of the Moon Water"District through' 2020. - • . • . • ...ill 'ctn. - '...-. m . ., ,. . •. .i 7.-...41-.) r.c.,-M gi 1 CITY OF.SCINOMA • - • ' •.7:- . La-.17..-V.:, -:-;.:-„ C. MI , , Viatdr7Sifiplitind.Soiirces: Figure 16 shows'the current and .projected water supPlieiVaVa'ilatirgto the'lcCity & SOrTirnOSonotha).-liSonorna'S.entitlement to'Agency.transmission System Water:I:ber:the OgyeritlitArtiiii"dael -- - - A Agreement is a:thaxiinathlaiefabe monthly delivery rate of 6.3 mgd With an annual licrif:of.,000 AF 'Sonoma currently flaslaoperationafgroundwater wells with ilobg:term reliable capacity of arpfOxirriale19.41•4'`K'S*7 Figijie 16: COO:et:it and Projected Watef 64plies a.itift'of.SOnorila . . , • 4,000' • • -- - ' a her Water(Kgency . P-•' • • ' supply) I 3,500 „ l'i_ - : -mimili=1111111MiYi,' -CI 'io 3,000 ,. . 0 Recycled Water iii --17 .---,,,,Amst-.- iii 2,500 INE it:111W7M1f,-pillibM,Th u 111!1111P11,illizOilligl a, z000 'mri,Almr._1 i.4 4•7.4 0,4— __ , . ' 16111.1111‘41.11K11.10. • Supplier produced . 0- 1,600 ' trie” pri.i t;;Ammi:V14.1M - groundviiter 2- ' 111.11SIMEtrie,Ml. / u? 1,000 4' -11"amm =s1M114:1"1. 1/alm 2000 2005 2010 201e 2020 IS Purchased from • Sonoma County Water ' , Agency III • . Year • • . . ,,., . , .. . .. • , 'Current,and Projected Use: Figure 17 shows the available water end-use data 'provided byltheitiof:Sonoma. The water use information i is based upon information from 'Sonoma's, Finance Department and Planning - Departments. Projections are based upon an assurned:approximate'2%-annOal rate of growth. The ot-iSiprojeCted • 'Sonotha's water use at 2,820,acreJeet forthe year 201'0 based upon an approximate1.4% annual rate of growth'. . Figure 17: Projected Et!lisd 'City•of:Sonorna . . • 4,000 - - . • • . . ..._ ........ . - , p Landscape :. .. . . • 3;500 - roil • • i.... 11 3,000 ma....1...4.I 0:Industrial Iiiatitutional, . a _ no MINE.re,..;:41 arid GrWemmebtall • 00; 2,5op -- , r, k-ry mi 4.,..1 ci rall_ „.11111111.-allwil. a,Commercial - '' 2,000 r 2•,,,i, 67 r.fil , • - - 1 1•9morlmMli . . • in. Fin"'ma. rti =16'..M11M Er Single;and;Multi 1,500 , lc% 0.1blifig IIIKIIVI i Residential Prtl aibl' eSidentil 1;ood IL1 , .7.a s-'-' '11 - ... .,_ . - 2000 2005 2010 2015 2020 • . ....... ...... , . • 'Year • . . . .. Page 14 . . ; . • Stipply-and Demand Comparison: No deficits are projected for:the City of Sonoma through 2020. - • . .. . • -. • .'• pin oF•CoTATi -- , • , - . _ .. , 1 :'...4--r: thilifil-Istal,": ab Water Supply and Sources:, Figure 18shbvvs the current and projected water supplies available to the:City,Of - W Catati (Cotati) Cotati's entitlementlo.Agency transriiission;system Water undetheEleventh Amended Agreethent - is a maXirnum,average moithly.delivery rate of 3.8 Alga with an annual limit of 1,520 AF. Cotati currently has 3 'operational groundwater.wells with a long-term reliable cepa*of approximately 896 AFY. •- . - • - -a - -.- I Figure 18: Current and Projected Water Supplies — -- -7 .":-..- City•of Cotati • - .? : .-•:- .-it-i •rci apther VVater(City - -'' ' PrO'duced groundwater, -; , 2500 ' Agency supply) , c. • so 2000 o • • .; , ., 0 Recycled Water • a. >, as . . • 0 a- 6 1500 1.11111111111ralmi - - in pr." .,.,}supplier produced as -- :-; •at7.}11; 'ittg liT1 1 groundwater >, 1000 .--4--- a;;;;`af Irski V. p.9", qvh.:. 0 I,,eti i i a r r 7 3■.* ta 1 7,AV4 1 z ef 5.44 i'41 "5,7.; a ts,, a.Purchased from 0 .500 ktki a---4,ta ' - - ' SOnoma County Water 2000 2005 2010 2015 2020 Agency - Year . . . Current and Projected Use: Figure.19 shows the available water enthuse data provided by the City of Cotati. Cotati only provided total water use data; therefore, no breakdown is shown. Cbtati's water use projections are based upon an approximate 3% annual rate of growth: The DI-15 has projected:Cothti's with-,use at 1,300 acre-feet .... for the year 2010 based upon an approximate 2% annual rate of growth. . ,. - Figure 19: Projected End Use -City of Cotati • , 2,500 _ .- . - , ..,., a- 2000, • _ - . . . _ - - NA ETBreakdowrrby sector 1,• -1,500 7;;;22, a r,g, 4 $ • .,- -07. nici I it" ;4;71 notzvailable ; ' - t 1 - Nri V-4: rzA t4;74 a '1,0 00 rt?./ oi ti,i. 0 cttt ttii r:/j.a. rm kil. 4 - . • I 1 . 500 Ezti *alIC: iti-L"i 6 r.:12 ,_ . . . . .. . . . •2000 -2005 2010 - 2015 2020 - - - - -:- -- - -- --- • Year • . _ -. -, ... ,-..- .. . II _ .._ _ Supply and Demand Comparison are projected for the City of Cotati through 2020. Page 15j • . 1 ' . ! - i FORESTVILLE WATER DISTRICT Water Supply and Sources: Figure.20 shows the current and projected water supplies available to the Forestville Water District (FWD) FWD's entitlement to Agency'transmission system water,under the Eleventh Amended Agreement is a,maximum average monthly delivery rate of 1.5 mgd with no annual limit •.. M ; :t r ., -,.,;:;-4t} • 4t ; -,it oil ;: -Figure 20: Currentand;projected Water,Supplies. < ..nTI -, _._Forestville Water District , -_ : • cr., n. a -ro • .__ 600 ._... --. _ .�_....-.e, - - . • .-m 500 Rec cl ' tom' rn• , yed-Water " t'' 400' ITIT-T Vim . 300 i® L ei Purchased from • 200;, ,A®"t.*1 I` ®I Sonoma County'Water 100. , � .� ® ® , Agency g 0 . -. •It -u . `2000 2005 2010 2015 2020 • • Year Current and!Projected'',Use Figure 21 shows the available water end-use data provided by'the Forestville'Water District(FWD). FWD use projections are based upon;an`,assurrmed approximate 04%o.rate of annual growth. This rate is just,slightly lower than the 9.5%-annual,rate of growth in new connections"that the State Department of • Healthaervices reported actually'occurred in the;FWD service areafrom,1993 to 1999.. . • ,, ,Figure 21: Projected End Use - o Other Forestville Water District . . . . p Unaccounted-for losses ' 600 • - 500 ® Landscape u. m 400 • m 300 r. > ®-® ❑ Commercial, ;1•2 '' Institutional, and•a4 200 ®� +■ ®�n ® 'U Goeemmental ••m. 1. Industrial .. p 100 ® ® ' ® 434® ®el® _ - - - ® ® ®4 ® , 0 ® Multi family residential r 2000 2005 2010• 2015 2'020 • • . Year . • . 13 Single;family residential . Supply and Demand Comparison: No deficits are-projected for the Forestville'Water District"through,2020. 140 Page 16 - INCONSISTENT WATER SOURCES Based upon the water availability resuits;describeS"above, the Agency has notidentfied'i any Inc onsistent:sources of water-to su ,l the A gene .,sitra"nsmission sstern. However from the vanta e (?P y 9 Y Y. g_ point of ttie water contractors; for •,_`which the UWMP 2000 has also been written; the Agency's transmission 'system may 4,be considered an _.. ..--- inconsistentsource of water during;someipeaktmonths of:water demand. T;- On December 7, 1999, the,Agency's.B.oard 'of Directors declared aitemporary impairment of the reliable water production capacity of the Agency s:water transmission'systein for the defined period of_June July •„August, and 'September though the year 2005 (tempo'r"ary. impairment). During the temporary impairment, theAgencymay not Ibe able`to reliably deliver some•of the water supply entitlements to the Agency's water.contractors_when water demands are at their highest; '•The adequacy.ofthe Agency's existing transmission system to meet demands was •recently evaluated by the-State Department of Health•,Services;(DHS)1 This report;is available for review atther Sonoma County Water-Agency. Provisions to allocate in the event,of a temporary impairment areiincluded in Section 3.5 of the Eleventh Amended Agreement. In addition, in response to the current temporary Impairment, the water contractors were requested by the Agency to update and implement%theirwater shortage contingency plans and provide additional facilities to reduce demands on the Agency's:transmission system. I ” A REGIONAL RESPONSE TO WATER,SHORTAGE • In an effort to create a regional response to water shortage in the'A9ency's service area, the water contractors' cooperated with one another to draft a. Model Water Shortage Emergency Ordinance (Model Ordinance). Thei Model Ordinance contains contingency ;provisions to address water shortages and a Water Waste Prohibition, (WWP) section. An independent water wasterprolibiton°provision may be in effect at all times by operation of a separate ordinance to be.adopted'by each}water contractor' The key'elements of the Model Water Shortage .Emergency Ordinance contain flexibility to address the varying needs.of the individual water contractors so'ittiat it may be,acceptable to ell'parties. While the Model Ordinance is in draft form at this time, it:is expected that each water contractor'will•adoptan ordinance of similar, if not identical, • content_ Water Waste Prohibitions (WWP) and three stages,of rationing are included in the Model Ordinance with reduction goals that range from 15 to 65 percent. Stage 1 calls fora,voluntary reduction of 15 percent while;stages 2 and 31 are mandatory and range from 25:4to;65!percent: Table 1 summarizes the:three-stage approach, the conditions ofl shortage, and.the rationing tequirernentsfor;each stage. • • Page 17 • • Table 1: Rationing Stages;;Conditions, and Reeluction Goals _ . Stage 1 -Voluntary L.: :I ., Stager2-1Mandatory Stage 3'-Mandatory SupplyconditiontldepentiS Opcatotaljwaterreguirement Strply'ayailable'titin Agericy-and zta •,. sustainable loballUpPlY. For acIditionallslelail, refer to-the deSciiptioritif•the Model Water u•ShortaggErriergenoYOrdinince:lir.4 0J45 d- rq ase 'fICLPS-Si7A:4:1-1 9 • - 15% •I n. 25%toE0h - 25°A toil°10:71:.,14m ii's- 27, e-roctsve: raf • WASTEWATER!COLLECTION,-TREATMENT,'DISPOSAL,-?AND RECYCLING' F. --z-s;3 _ . c . triatmentlilatii.aerveie 'F■geridys;watei.srecgitract;10; heib ale;operat4 and maintained uhderccontract by the Agency and are located in the'Foreatville area•iand in the Southern Sonoma Valley:7 The'three plants not.operated and maintained by the Agency are located in Santa Rosa, Petaluma and . Novato. The City of Santa Rosa, the City of Peialuma, :and the NovalwSanitary blab-let:or la,(designatedti-ivate _ contractor, retains the responsibility of operator'and maintenance of their respective plants. . , • The North Coast Regional Water'Quality'Control Board (NCRWQCB) and the San PraneiSco!BaYIRegional-Water Quality Control Board (SFBRWQCB), depending on location, regulate treatment plant'discharge in.the,Agency's service area and develop `discharge requirements i 'Table 2 provides a stiriirriaof each wastewater district or zone •service area treatment process, And disposal Methods. 'Table 3 provides information relating to the quantity of wastewater treated at each plant andthe amount of effluent currently reused., • . . • . . • • • • - • • 6 Two ortheireatmeniplants(Santa Rosa Subtegional,and Novato Sanitary bisinc-t)are soOdividedrinto:multipieyeatment• ftheilities, but for the purpose of this LIVVMP 2000,thefacilities-are.grauped;iritaione'Mein!plant: The Agency:operaies:addthonal treatment facilitieelrilthe region;howeverAhese'are not included in the OSP 2000 because they do not provide,serviceio-the.eighfwatee contractors':coveied'Unde'r-this-bian. . Page 18 • . . i, .. :.. 3 . t )- 5. .r d • C 7 1 . - � Ttci f _ • l:: .i i >t 1. ._t /1":-.,:;-":50. i .' Y is. co (1' L..— Z C m � NC m O m i, {,'iiRr > ON J ' t5 v°‹o .S. ,•-O U 3 ( ¢ m' > m al 3 YN ix l Q _ Ufa _ N1 V . d IL _ ra,7;.: E t..7 ':v at'C ` m ... co• . 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'O N .O in: (a o 'o C.D: c -°, C' - I- Ell= _a d a m fN CO N `°'U' :m':o 0 a�N .. f, m m m a E °rw .� p c o m tx. to mo ,> 3m a 5 1 v � ets 3 m 4 .oc_c corny o'x m m2'. m N �m m V - N 0.0 "_50 o N c' N - m CO 0 L O _ F ` a c co 0 -o co co m m' m 2. � Q > m , .,� c c. c0 co N m �. NO m Q"_. > c C. ~ I`LL '' O 0co y y, .E 0; U a 1cn',' = poi' a $ �i m —. :.? -+ 1 of • ..• b_ '0 m, :,� 'm a.- a. coo :: mac) >0' 'n- > - . F '.v'4 atF : .._ _ co t: - fn a (n`0_ . 0_11. Z fn - o m N s ' ;N o -`..x d. l6. a , >' "C C. - ' .V O .�. a i 'V ,p C 10 CO m. „_ r.. 0, ?� '` 'C :0)E .E y u ,> En E. .N O m 0 E. ` A •V.` 3 i00 07 N' ,C C O D U .o •N. m m .� E: 7 >. 7 >, N .Z flp m U ii m3 . a3: 3 ..o mg cc a3 :�w E o 1 RECYCLED WATER: POTENTIAL USES:AND PROJECTED VOLUMES Summertime demands on the Agency's water supply and transmission system have been'.increasing at a rate of •-r'approzimately 2.0 million gallons per, day (mgd) each year for the past several years. As a result, during peak water use periods,.the•Agency is,operating near capacity. The use:of,recycled water for irrigation;in urban areas. • has the potential to reduce peak summer demands and delay'the need'for construction ofzadditionalpotable,water• storage'facilities. "A Preliminary,Assessment'of Urban'Water Reuse''Sonoma County'Water Agency,Service Area Sonoma County end Marin County, California" (Reuse .Optimization Plan) was prepared by 'the; Ageh cy` in + -� _ November 1999 to analyze the potential and"optimal use of recycled water in;the service}area. This asses"sment`is` • available.,for review at the Sonoma County Water.Agency. Figure.22`shows theitotal protected amount of ecycle`d, i " . waterthatjcould be used in'urbann areas. The feasibility of using recycled water in;urban;"areasiis contingent upon additional analysis of theThost-effectiveness of utilizing recycled•water in each iotithe,water,contractors' service • areas. a ,. • Figure 22: Projected Urban Reuse ©:Santa Rosa . per Water Contractor • El Rohnert`Park. 2':500, El Cotati 2:000, a a • y ❑North Mann ,7:500 , Water District • • 1.000 ,,,,7„,:: 3 ®Petaluma G 500 'tee::: s t•,,,„,„, OSonoma� • •• Protected,Urban Reuse ■Valle Y._, • ofthe- - • WATER?CONSERVATION BEST MANAGEMENT PRACTICES In 1998 with funding in place to implement water conservation, the Agency became signatory to the California Urban Watei Conservation. Council's' (CUWCC) Memorandum of Understanding (MOU) regarding urban water . ,conservations By signing the,MOU, the Agency agreed to:developand implement applicable best rnanagement:. practicesr BMPs) usina sound economic criteria: The BMPs and:the•criteria for their implementation are:contained in the MOU a coprof which is"available through,the CUWCC's website •www:cuwcc:org 9 Asa signatory, :the, A enc a ,; 9 y pledges- a "good) `faith effort" to implement applicable cost-effective: ,water conservation efficiency j ` a • 1 • 8 The•CUWCC is made up of three groups. Group 1'consists of water suppliers A 'lvater•.supplier is defined asjany entity: including a city which delivers°or suppliesrwater for urban use at the wholesale or-'retail level Group±2,consists of public,, • advocacy and Group•3 consists of other interested groups. 9 There:,are;currently"'14 BMPsxaddressing residential, commercial; industrial;, landscape, system loss and leak'detection, education;p iblic,'information,sand pricing conservation practices_ • Page-20 • . ',improvements:10 In addition, the Agency undertakearadditional water conservation measures in its service area , . . _ . ,, • ' • thatbenefit the water contractors'14A list of the BMPs and water donservationmeaaures thaltheAgenty'implements .. , , ' . • follows: ' ,. • . . • • a BesiManagement•Practices • - .4 • . •, . • , lip . • (a• BMP#03* System Water Authts Leak Detection and Repair(required) ••• •:+13MP•#06: High4Efficiency:WashIng iviabhineRekat&Programa - • -• • ..4 -:,-, ...;" 4 o #01 Public Inforrnatien Prof-am-e(requireti) Z. 1, • 4'' ' • -.-.:s : \ x x :c. .-.?, :,•' ' BMP#08: School Education Programs (required):Lei, • . , . .. ...,,-* .• • ' 7 '• . BMP#10:Wholesale Agency Assistance Programs (required) -='. ,..... .-:__.- . sr . ..._,;', i•...4 • - RMR#11: ConservationcPricing (required) . 1:;. : "Pt:12 4. . .-= - • 44 • • • .BMP#12: Conserirationtoordipatot(reqtrired) --','4'0.4-- '.. ' ' -- 'frd - - T.-''' - .11.. '• • Additional water donservatipn:prograros, . , 4, .* ok b, -1,t1 '. 4,:,..-7- 4.\11' ' -,': I"' tf. • 1 . • c Sonoma Valley County Banitation".Dritrict Toilet Replacement Program -44-, • 24 I S ,, ,,* . 4 •.:,- I- -. , 1 'X - .4 :. . ' 1 • •.• , t ! 1, .... _ - r WATER CONTRACTOkIMPLEMENTATION OF THE BIVIPt , 1 4 Table 4 provides a'detailed•sighniaiy Of which beat,Manage-Merit Practices'are:being employed by each water . . _ 1 • - contractor. , • . . 4 • • . • . - . ..4. , - . • • . . _ . • • „ • • . , • • ' • . • ' • - • . . • . _ _ . . . _ - • , . . • „,, s " - • - . . . • - . . 7--• 12- ,. ., ■■:--:' -..-5 i: e 4 , -. - .- 4 ,C ''' ' . at 5 a 4 -r k ? 4-4 - •ti. '''''.' •li• 'Ll: - it:',•. ,,.• ro Ct; r 4.2.. .,„ - , .) i. .,i ,r,,,, ' • .— :: .% 'Th – •–% r 'S, t • :S. ..% ‘,1•4 ---• ':, : 14 ;4- 7-.. ..--.0 5 1 , ' • 7 II ^.E„I' a - ; 3 -51. , t , ,,1 ti • ::. 'w : ,..- 'Sr 4- - --' --tn '.7.- 1" ., 7s 'n • 1 :- • - c. 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Et:, tr... :1 •:, • , i —------.,– • ..... • 10 The Agency,as a wholesale water supplier,•;is'not expected to implernenfell'BMPi;.aecarding to the MOU,wholesale water suppliers are not expected to,irriplement BMPs•that require direct end-user interventions. ..... , Page 21 . . • • ' .. . . . . • '• • • i• • • . • . . .":"C77-q:5?' rF.!P r ePS: "P • . 31. '-'5.:::: -'1 ' .1 .•:. - . •:.;.--. t.1.1...,'7-1.",:tatc'eashav8•-c,,ITrc4V1:: 1,1 ' '3; I 'I • r. 1 41'4'4 '1, • i' -', - • i' ;tif - '. , ..E-1 - 1' I iE .,,'F-,7.:, . 7 ..1- .• v--4, , 1 4- .1 ,:ro, -1.A1-z.71,i ,•;A“..-41 lc Ell:flt;;kw•.:-; , 'iifiti ± i io 0 •-‘, ,.f . X ," X X X,,,i5 j tr., X.X1Z,X,X;X Xj*,:. ,. ,.: . L..11 -2; , 1 ›- Lr)'it, ' 1 1 41 1 ' 24 11Hek: "I "fl .'".41=P r"1.91 :-.H'r'-ls4 1 1. ! 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