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HomeMy WebLinkAbout08.a. Attachment 4 - CWMP PowerPoint Presentation ATTACHMENT 4 I A •fi N l ( � ' "A"41dW Isfia COM R H NSIV WAT R MAST R PLAN ='P .a `Y t K: * e I ='^-ter.�w, x ■ �- Board Meet U. June 1 , 2017 Jean=Marc Petit Director� ��� �F � �, of Engineering and Technical Services Dan Frost, Senior Engineer, P�lann n and Applied Research , '�" _�" '`•°��cam;;,<�;��, -,. THE COMPREHENSIVE WASTEWATER MASTER PLAN (CWMP) IS A CRITICAL LONG RANGE PLANNING DOCUMENT FOR MAINTAINING A HIGH LEVEL OF SERVICE, ESTABLISHING LONG-TERM FISCALLY RESPONSIBLE POLICIES FOR OUR CUSTOMERS, AND PROVIDING A CLEAR DIRECTION FOR CENTRAL SAN . CEQA • Staff has concluded that the CWMP is exempt from the California Environmental Quality Act (CEQA) under Central San's CEQA Guidelines Section 15262, since it involves planning and feasibility studies for possible future actions which the Board of Directors has not approved, adopted or funded and the Board of Directors' acceptance of this document will not have a legally binding effect on later activities. • The Board of Directors is not adopting or approving the CWMP. • The CWMP Executives Summaries and their recommendations are presented to the Board of Directors as an information item and only acceptance of the document is being requested. The lack of legal effect of the CWMP is further demonstrated because Central San is not required by law to adopt such a document. • Central San will conduct an environmental evaluation of any capital project that is proposed in the future as a result of these plans to determine the need for any additional CEQA documentation. 3�: ' man Dynamic Collection ... System Model / Comprehensive Wastewater Master Plan ' ..CCS THE CWMP IS COMPREHENSIVE Assessed Near- Evaluated Reviewed Past' Term & Future rocess/Energy Reports Needs Optimizations Developed New Determined Evaluated & Dynamic Regulatory Selected ' Hydraulic Model Scenarios Alternatives Evaluated Developed Evaluated Flows Process 20-Year Loads i Comprehensive Capacities � Plan Performed Evaluated Prepared 1 Condition Hydraulic Updated Assessments i Capacities 10-Year CIP* * Capital Improvement Plan (CIP) Ole AM OConfirmed future CIP Projects, Estimated Costs, and Site Layouts �'ProvidesClarity to IPProject Inter-Dependencies & Priorities AL OCoordinates Project Schedules & Predesign/Piloting Needs Confirmed 0&M/Energy Management Strategies — Develop Energy' Policy Accelerated Condition Assessments/Implement Asset Mgmt.. Plan Aligned with Strategic Goals CWMP BOARD PRESENTATIONS AND WORKSHOPS �I June 4, 2015 - Board approves CWMP contract with Carollo/CH2M H 11 Q' June 16, 2016 - CWMP Board � Workshop on Treatment Plant October 6, 2016 - CWMP Board - � Workshop on Collection System • November 10. 2016 - Board Workshop to review revenues and expenses January 26, 2017 - Board Workshop to review rate scenarios • Other related CWMP and CIP discussions at Board Meetings on: �* ��.� �— 11 /15/15, 12/3/15, 12/17/15, 10/20/16, 2/2/17, and 2/16/17 CWM P MAJOR DRIVERS Drivers Descriptions I Aging Infrastructure Maintain performance and reliability of existing assets to ensure reliable treatment of wastewater Increase capacity and redundancy of existing facilities to accommodate wastewater flows (wet 2 Capacity weather) and loads. Projects that would be required to accommodate planned growth are not included in the CIP. Reliably comply with regulatory requirements that 3 Regulatory are designed to protect human health and the environment & Plan for anticipated future regulatory requirements Minimize life-cycle costs, maximize benefits, and 4 Sustainability achieve economic stability through optimization, resiliency, resource recovery, and energy projects CWMP EXECU IVE SUMMARIES Public Outreach u mary Technical CENTRAL SAN TQ YEARS AND BEYOND T PPOTECTINC OUR COmMUNITY AND THE ENVIRONMENT � • • � srtra Costa Seritary District ■ 'Certrai San" EXECUTIVE SUNAMARY INTRODUCTIONS .. - ,rqeI�.�.eerrr:al��a:'aces%Mvlaw?zz;atrrs?Ce.a#-al fier+#has .ve,--mfw capmm n 4rno treat-rpm ky •ita wt mrw i clwfm Cocanrr.,arta-#•Ae carve Ovw 1;9E1tl rnmcloe+ao r 3,OCtZ lracrw as in I+>?agrrre mines.our rar+r cm rdude iuFp=-lira rccrt}7d yvaxar 1�w parir ivd 9,.44 cer een+s.Ping bDI"r ommme:seed am m+ua*m_•�31€*q rjee vat�pr pi6kud.d=a+ra.�ara'Sr+g a tr_:�,rc,4d ter a fatilh}srnd running �' aopi-iutiset�cciveacea�bY feoarerury�GLrcare mar��r+as m wr*ca�r rara75¢t>�Ife a+d�a esu+rpren�erd - �'r 4 y t ur rs.aoir+rr>�fir+air,or,u9 v4r Yom:s�rv:anrs&'.!'r,:e::s�,a day.'�""1 ciey. ;° .. „, Ccrwal lip ;lar ea edge a+.5CQ-r.a ceileetann kg4m+r't Surd a Vvetnwnt planet liw l"ve be c^..all rAelnteirbll,Gut dusr srsr#aCR eer^Vet] &9ft rt7.r".mv �:• +-r. - "lectrrraa»nerJ vpsjriscfeC e7Jreerxy ria ercp*w�wp[.et � - tse Phirrt and irr tfre%ydo-+have teen srtanoad wwed9 e t' caaantt thaer s�ruital uaefd ids due trs+rep+xsat3La and " rrcxua.:M&I I-•oncepraetrccome data uuddacdon ties . a yams add,eaauer� 57 pt9e;dd.P-&tibarYam ptrt d*cilrct4 vows pairaes*i axam� e9•n tri 19,%acct sre no�of they pew val+em rrrtaraaranar cwroct rrwrih%n ed!ah[e ner4or ce,-rHaw eYrar+amrd*d eprtino+n�nrpdaaarrs re Iai+e and up�adr COMPREHENSIVE■■ '.Y.J�C"CtS YYF�I�#&M fDr f-anhnuc1'i f6kjla npefe'L�`.. in ordcrto olan iart w{'utaero anu 4-e Gert a F�pe•ar v won fesr the r-oldcame,r s seed radaq,.C:arr:'al WASTEWATER i1 ■ {_ cnsrxsiiaaiexwe3 a Camnrehenei.es NyGt r+lvr 3 Maar Plan fCtibT,+m TK#C~'ensxtmrpa es a S1.a bl%on 0'b dollwlr two-decade-?C-9 MASTER t ;.apetai irrgar.rA•trnac.n F+rr.�rer'e h'?'I{'i}f rl.e fik';�dGt'IQ"S 6yMe'rt an+�iP-Cbt'-?'=e"5L�I�tCF�WSJ W73-61Lc n cl[aTxtCil rRS,prIIsE771L•"F'tla ■ widrin�u drat ten year&-The raoorrman�Dnaj* tram tr-9 CW wwsrc r LAN mvrm-wred into flour Crxsg rwrPi zrKJl jcl;ng the rr crx3en rmtrr syw:um.t."rrvwr t Mort, DRAFTFINAL c-ml-actran ayces*rL end�r�era#ir#acr.v+r�-nom-'i akao rtsa+stwFf���r-seal+f rsee:fac _ �vrvome"tt fdr 3rE Muzateai or arvimng rerrdu6tl w w.but funding for ti•+eao•s nptinckcied it the CA,, lKs malar.the i.1"we reoeaera frorn snip miwonwn.eased can 40CLA 9rOarpec t71arrJ r u att#resrr canary crstr,Eidatar;er feid °5,a xtre#x err uetiard ti-h+Ce^tml Banti.veate+raeer oeervic,ac a•w err 4urhre c{rec� +n�ttK:ThC m@iaiiay�ce.a�+raoro eursrjt+�J %+aa'rxrss c.:ppereac '^ z•,r >.�y• the mea—r Dara tired*0 funak:'p neeeaed.to:mp6na n, rbRiesCr7rr�aa:�arm upgn�eF[�6�r4grtrEal ewers g i+rfroadtlw'tttRt ...,..- ;.::. t S. 10 .I, CO LECT10- N SYST M MASTER PLAN FINDINGS AND RECOMMENDATIONS f AW; : . � 11 DESCRIPTION OF SEWER SYSTEM • 145 square mile �< � 2 nd largest collect, system in Bay Area after San Jose �;�` �, • Over 1 ,500 miles of gravity � , sewers , • 37,000 pipe segments Asset Value >$2.9 Billion • 31 ,000 manholes Plastic $826 M • Pipe Diameters: 4" 102" Clay C • Oldest Pipe: 1913 (103 years old) $889 M • Pie Materials: Concrete, Cla. �"'�"�"� PyMetallic Concrete Plastic, and Metal $162M $974 M ,� Million (M) �'\ 12C 11111111 N- 1 OO-YEAR SEWER REHABILITATION & REPLACEMENT FORECAST Period Cost ($M) Mileage 0-5 Years $99 5-10 Years $180 42- 801000,000 10-20 Years $441 184 70,0001000 20-30 Years $724 281 60P 0001 000 30-50 Years $1,156 403 501000,0(x 50-75 Years $575 206 u 75-100 Years ti 40;000,000 $808 276 m 30,0001 000 20,0c)0.100(l 10�0001000 rl*- O rn Q0 C1 r14 Ln co "-4 it r% 0 V) CO T-4 IRt r-- 0 rn klo Cl) Ln 00 Tt N MA rn ro it I- It Lll� Ll Ul) �D 40I.D I'D r-ft rl�- fll% w w m m m m m 0 0 0 <=� C= = 0 CDC> O 4= 0 CDC Forecast Year 13 :q.." k SEWER REPLACEMENT AND REHABILITATION PROGRAM OVERVIEW System is Aging. - Optimized Pipe Conditions °, Rehabilitation & range from Good to � �r �-- Replacement 4 Very Bad Condition `; '� Forecast • 64% of pipes are � ` Forecasted CIP: < 50 years old —Developed Data- ~$99M in 5 years • CCTV'd 90% of pipes: — ~$720M in 20 years • 2% - "Very Bad" Supported Risk Model Forecast will be I nfoMaster'O to updated routinely for Confirm Sewer Needs CIP updates lie Uses ESRI backbone • Uses LOF and COF to -- 'icalculate risk LOF based on District II ���IIII�III�IIII CCTV and cleaning ,rsli3vf i R' ' .ittfi€k",l8i 3'e data 14 : THE CWMP DEVELOPED A CRITICAL TOOL FOR DAY-TO-DAY OPERATIONS • Under the Master Plan, a new collection system hydraulic model was implemented: inf6woft�ICIVI • Transition from ArcSNAP -> lnfoWorks@ ICM • Collection System Model is used to: ➢ Identify Wet Weather Capacity Deficiencies ➢ Size Pipes for Capital Projects ➢ Evaluate Impacts from New Development ➢ Evaluate Potential Limitations for Special Discharges 15�� � COLLEC ION SYS EM WE WEATHER CAPACITY RELIEF IMPROVEMENTS 4AR 2Project Project 1 Pts Nei Rl*G+rr+csZe.s.T"ukSt"t,y ORD-1 EI Camino Moraga Easement Orinda .812 (C(Sa'�gSf�aQE�r 'F GRD-2 Moraga Way(Orinda) 1.156 M019-1 Camino Pablo[diversion(Moraga) 1.442 .4 }� MGR-2 Hodges Drive Rimer Drive(Moraga)) 4 75 LAF-1 Deer Hill Road(Lafayette) 363 WCK-aa ,,�, 4i i. -i{ LAF-Z Happy Valley Road(Lafayette) 1.185 ;- .. �� � �` LAF-8 Moraga Road (Lafayette) ` lAFt2 LAF-5 982 LAF-4 Pleasant Hill Road Buchan Drive (Lafayette) 3.818 WCK[LAF. , . F' -- LAF-5 Pleasant Hill Road/Springhill Road(Lafayette) 232 CIS-1 Camino Verde/Gear Road 'Walnut Creek 2,276 ,..., y ( ) ! ,{ WCK-2 Tice Creek Drive ('Walnut Creek) 403 p 2 _ •���_yypp"A , -a `` Gid-B Tice valley Blvd., Meadow'Road,/Lancaster Road(Walnut Creek) 4,1'54 " CK-4 Palmer Road (Walnut Creek( 1.020 Walnut Blvd.(Walnut Creek) 1,428 PLH-1 Ardith/Kathleen Drive Diversion (Pleasant Hill) --20 See project Pleasant Hill-Grayson Creek Trunk Sewer l . ,, p a ns ~ PLH-2 Grayson'Road/Pleasant Hill Road(Pleasant Hill) 2,882 yi IN. '� PLH-3 - Virginia Hills Drive(Martinez) 200 ' sY PLEI-4 2nd Avenue Pacheco Pleasant ( � Hill) 1,837 MAR-1 Alhambra Avenue(Martinez) 1,528 MAR-2 Embarcadero Street Easement(Martinez) 987 - * None of the projects are due to growth related capacity limitations, but solely driven by wet weather capacity 16 COLLECTION SYSTEM CAPACITY OVERVIEW - - Maintain High Level Implemented More .............. of Service at Robust Model Reduced Costs • Critical day-to-day tool � � Reduced length of pipe • Commercially-available � replacement required by • Calibrated using flow _ using new model/criteria monitoring data Flow monitoring & new • Improved accuracy U tilized a new model reduced CIP • More detailed results Design Criteria needs allowing for prioritization 0 10-year event design & higher confidence criteria selected • Clarified trigger & design a;� InfoWod(S�1CM criteria ,- • Consistent with other agencies Leverages model �� yu � - � �► capabilities & allows some surcharge 17 ' WASTEWATER TREATMENT PLANT MASTER PLAN FINDINGS AND RECOMMENDATIONS OVE VIEW OF WA TEWATER TREATMENT PLANT CWMP IDENTIFIED NEEDS ..,........................1.......`......4...... Addressing Limitations of Existing Recycled Water System � .. ..................................,. Community Impacts and Flags ` .............. .s .......s.........r....,.e...,r...r.I.r....^. Planning for Future Incinerator Nutrient Removal t. Emiss on ` i Compliance �.,•,..•..e..r, 1..141..x...,• � � .,. ...rr....�........1 M. ... , t pportur t s (so Costs for Future N� .. ,.' He�' aterr + ,t _ ,��-�►� '�`` �• . Future Energy_.......... including dere ' , ' +" , �,#�► 4�-. ., 9Y i ,. ` Changing Conditions F ►, „�,; �; . ►. 'dance with '41 Qischarge �h� � '��#�.,� ,�, ,�,�-���r•�,,�►.- _ � _.� ,� r -Regulations .. ,,. ,�. , Redr�ced Landfill Gas js =� 'ry -1Jvater Demands ' .410- ►a ,� , . ,...,.F.................. Climate Change t ,'�h. ig r .,#` +.ter• .-r� I r✓ " ....................,.,.....,-. .........i � ' �� �'� 4 �S �., ��•A r _ ,Y .gip. MP Optimization of Hydraulic Capacity and Cost and ChM for Reliability for Wet Weather Disinfection ',, .............: 1T a............... ................ , r .... ..................... . ,; ,, � „fes. dry and Wet pp .. x r ' .' ., '' ' Flow Projections � ortunities �: 1 �ur ,y for Innovation and ..,............... 4 Resource Hecovery r................................... ............... Realistic Costs for Prioritized Rehabs `- CIP Development Replacement s ......... Schedule to Address Y Reliability of ..l AgingInfrastructure Pump Stations @ 4.s.as....c.e.ar......::.r..,..........r....:a,:ss,.�.i i..................................P 19 TREATMENT PLANT PROJECTS OVERVI E AGING INFRASTRUCTURE C-7)CAPACITY REGULATORY SUSTAINARILITY I Flaw Plant Imprcnrert•Fwtts:Rept"fjti[@r rrFe(U2.un ordramk ckct Tical gear•and support I Secondary Tresatnient Hydrauilcs;Arad secondary darMers to irk7paaw til Contarntnated Stills:Re_consofdate contarnhated soits to t vveaMe r m t ng baun ii ScreeningsRvwval tlpgsada:Add new infimit screenings removal and facilities Kf+Wl-c.4xx ty:arsei a mixed War g tter stnxtum to ewnly split 4-5cx_tth hanrtl rrcl W ifities to rojAxv tl)r+current scteemigs"`Kming process 2 ondary Clarifies Roh2bilibtion.Replace drifter tied %,RA5 pumps WAS purnps cryo t'I.Frlth-t5. It R"A krM 1:i)ptirnim IxiTrtin for nirtrtortl reckMttKM f .iddlrM Ch("*- Qd1k rKeri 1� �' . >� Aesartion 5ritfm UpgracMt:Rql,Fce stcvm►+bit'rrrrcxs vrittr i'ioctr k ttlinrlera,rte 3 UV Rapt3r4m0rW R'I�A(o(IV 0%RFfKtW gysfprn, UV Hydtaulkv full hen Inti Immi.A to lfVcltKx-wi,vjd,i parallk favii fxirmiry triidtmerit and hnprlt'grw-ming AM tank for sfAlt now nitrillrAkait (erarnk cfrflukvs wilh am ixsnc t6lMon,relA)(0,*pk*q Ctinwrt was(Q h" 4 Sa4lds Handling Improvements:rt-1Axnc*rsttifi_rge s,cava' nJ*K arld orpullulKan Lonhol eff"�nt' ': ii'RACWA L rest]I3:irrgtCc+rmT AltrrnalW I-2 to rrrtrrte»srrtrns Fia r1ilrogV41,ar'Mtl rix ovorystexn systigii into a wasteltast to p cKkxtion sysl+em ogurpment_ I PrtttsMY Expansion.Add two pnmvysedF nn i n tanks anti phnsltionts to r hc}ariikirx1irKl iirilltS.• 15 Rata Yl ata raty Envertsion and Drain-back System.Add a raw w djewatcq 5 Fluidized Bed the nrxi r>i ttw-tr tnr.4uT 16,with an Fill a LmA to rpdwe ,e&#@rflawraws;anrl knpmvp 4 Solids Handling tmptove rtents:Itaducp firm additlon,repWo are"lutivn control ;*wli to tfPWV61rts AM a ixanp station to whahly d(An!tiara warstewaler tx�r mn;XKP equrpmmr►and ash handincL trnpienvnt seism*u from ille boitl t Ctexwelt tntprorramentti.I?cyrLtcP cl��rrvr-1!lire Arid thr�c++ast iell cosrc�r;Ar1ci vet[�f�rcrvr~r t upgrades larttFe Soiic�s Cor�onirtg og fsasins l faf�ter Plant Fxpanslon:Add d chinrine contact tank expand st at RFtikirng acrd Ml I!s arxi i tree the sk W operall©ns and mtxioq R Reflnwy Ro<7cfed Wates Pro)ecti2o rr►pol:Ack1 Mtilt,itevcs+se t3srrwslsilti?f, �-Dutfaliltnprr>iranrents reaper rchlc�i�lendti+ticstrx. scklirgdi9c�llnr5 ant111Vtt,lxtnitxt-trxyrkvlwalrxk�rnearblrSfiK+H:ef<fkcrstxorc�firFrries! r0litlprrscw,t.Htfst ActfAs wtwr tiv d tht+fiitrrt,to nkx+l[.i1fVY5 lilk�:x 5 yolk Indnvratian'Isr-OnnonI solids I A(vrulKv 5.2,%hasty OKMlet OdotCantrralUpgrades retytktiiwatc�rcla+rnarKlswtmrttttteyty[tur.' tQrcYkxntlrltiacltottn�ttatrFtcr�stulxcrverstextreclhgttxrMfll lx►rrt*%odc«Iparty,artd tl HSWRetc*MlrphtHitt':AtislHSWIG(O ngia MyvAlhei tlatitolrKroaso " twentit,it repta[c�rrw�rx of 1ttc�kWl s rritli dlgostc�s paliowc*d by FE;is hinges prodLKIRn 17 CEC Rerr►mil:Provkde sura cw,tl*oxistitrg ptant site fa hilure fa(ittlkss to rernovo as Renee iWe Energr lsroloce Sda or wh)d.r C![s; 19 Flood Prowecdon:noise the k to protect frorn a 5.00-yt*ar storm event.MW 19 replxothe nolois for tho k0ml pxrrnps with"MMPF%IWmolofs Add*lh krlloont pump rot watt weattw Avers. SNsmk Upgrados Patpntiai pr*ct IdeMftd!tilt not iryrltrsfed In the t m i/ fF ..- .Mr p 1 :,. 19 8 < 'tai tral n All 4 `^�* �> 0 18 Sid �1 r%wool No f i .� 14 - � �r•ems-. ,�_ �-+•.. �. �.. 'ti. +a�- - � � �i s- ,, 2 , tip, 4 r . ow wo - . •. - y- 20 ` r r MAJOR TREATMEN PLAN PROJECT OVERVIEW BY PHASE AND DRIVERS Headworks Screenings Upgrade 000119 PLC Systems LipgradesPhazuec and 2 Q Pump Ef 81cwer Building Seismic Upgrade 1 2 (-3)41 Treatment Plant Urgent Repairs (Do Switchgear Refutishment-Phase 2 1 2 �5**010 Applied Research&Innovations %$ (D 0 Influent Pump Station Electrical Improvements TOO* Outfall Improvements-Phase 7 to 9 Mechanical and Concrete Renevation.5 01 Q 0 TP Safety Erthanoemenv,-Phase&4 to'I (D Plant rControl System 1.10 Replacement 002 (De Annual Infrastructure ReDl*cement Program Q10 61.Equipment Rephacement (DQQ0 ReCycled Alater Dictribution Sycoltem, Renrations 0 0 Fire Protection Syz3tem-Ofha.-VeZ 2 to 6 @010 Plant Control Sy.qerr.Network Upgrade Phases a.�d 2 Piping Renovation-Phase 9 Odor Controi Upgrades-Phase 1 and 2 Walnut'CXe9k/G1,av5on Creek Levee Rehab Wet lo'Veather Flow Managern-ent QU%'Disinfection Upgrades Primary Expansion Protect QTreatment Plant Security Improvernent-0 400 Warellouue Seismic Upgrade; Plant-W-1de 1n;strimentation UpgradeQ,, 0z 0# Labcrato-rySeismiI c Upgrades /T 1\ Innovative Bioenergy Demonstration Miscellaneous Seismic Upgade- Sold-3 Conditioning Building Roof Replacement I C-Isafwell Improvements UV Flvdrauffa ImDroverrents 00 Secondary Treatment Hvdraullc lmpmvement- Condit-Ion Assessment of Buried Pipelines WVVTP:')CADA Raplaoement Plant Operatlon-s Et Lab Data Improvernantus 40 0 Solids Handling Facility Improvements-Phase 2 4P Filter Plant Improvements 0 0 Solids Handling Facility Imp-mvementz;-Pha%-19 3 U Q 10 go Aeration and Energy Upgrades Tunnel Improvement's k Secondary Clarifier Improvements,Solld-0 Handling Facility Improvement.- Plant Operations)Building Seismic Upgrades DAFT Improvements ovements Surcharge Soil File Relocation 0 Aging Infrastructure Nutrient Removal j3AMNA Level IJ I)Phase 1(0 to 5 years) C-6 UV disinfection 990acgment Capacity Q Phase 2(5 to 10 years) D 0 TreatTment Plant SCADA ImDrovement-., Phase:�(1to 200 Regulatory Sustainability years) Treatn7ent Plant Projects and Their Drivers 21 PLANNING FOR COMMUNITY GROWTH 3.PLANNING FOR COMMUNITY GROWTH To gyral uate Central San's capacitj to 3ccornmadate plannea growth vverl',NE rext 20 years,Ce---it-S. 575.CO3 and it s c o rav Ita nts C o nta the ��* cities,towfI7 and Counvfor the latest 550.CO3 General Plan and other development 525-0001 .rtfo;"ation-Population proje ions 5 X- --0 0-3 and convVonding projections A"5.L403 of wanewaterflows aqd loads .63 :was-.ewater strength.1 were dv;eloped -1 Y-7.M I and later compared to the tre-a", ent 425.x W3 plarrts frow and Icad capacity.F Aure I X, 0- X-1 1 f�ows and loads were estimated by � 11%,11,10 xi 15 applying his ricaf per-c-apita Rcrovs Service Arm Papu,'060f,Pn0ieC,-;)Dnz and loads to the proje-c-tea population. Population projelt-tions were based on t General Plan and oevelopmenz iim'rormatior,an-,-,tie il-.-Sociation of say area C--Drvern merits'jABAc�Dopulation projerbons for communities in the serine area. For-the mw*,pant,inftert f-vws and loads have increased steadih,sire-J*- District's inception in Ite,however,in three-periods,,flows detlined from drought ark econormc con :tions,su as d-,0:,nn,;-th,lale'7-.1's and earN,,-'90S- Starting in 200B,the District -'enced an unprecedelted long-term reduction rece.57--iort,a persistent drought,and water 1-onseraation M 2016,zhe f<rwvs rebounded sllrjhtt�,(frorr,zq rngdw 3:-,rr, i bLrt not yet to the pre-drought fivws of arourra 35 rrgd. Historically,Bias l ave retumeo to.near pre- conditions when norrr.-,al rainfall patterns resurnso ano water usage increaseu,after drought resviction-s- are"fted.mover,a full rebound may never occurthis time,because water is ervation measures and invesvnem-Z fror-,residences and busl"ESSA-S may pa-m-taneritty reduce water consumption and wastewater fiovvs_The C-%VMP assumed Sows would rebound to appfOximiltel'ie 34 m9d and would St.eadily inr.rease at an average rate less of lessthan I percent peryear forthe ne-,,rt Myears. 50 All n 3,41 261 o 10 mr1ca AM(lif Prolenp.d AD%AoF 0 11-115-0 160 1970 1 .0 _J H;zW ncal Dry'We vowt- ♦Ffo%aand Fr*ect2 ian 2, WA TEWATER TREATMENT PLAN CAPACI Y EXPANSION PROJECTS • All capacity projects related are based on hydraulic Not Shown: Replace Stop Logs at Add Two Add Add Two Anaerobic based) orprocess (solids or Basin aSpillwaywith Digesters Fourth Secondary Weir Structure �+' �r DAFT organic loadings) deficiencies �= Glorifiers . ,�� A Add Sixth Influent '. 1 'f :: Pump *. 1,. ($5 mgd) • t • a or capacity expansion improvement p are r tOWN based on wet weather capac limitations of somei of the processes, pumps, or L - ; • Reduce IJ1f Hydraulic ► = Reduce Headloss in44 piping t rn a et best practice Restriction using Low � , Final Effluent Pipe ,I Lift Pumps , ,, with a Parallel Pipe teria I r irm capacity cria gestfi ,a unit out of service Major Ca�)aGr Exl)ansrn,r?Projects None of the capacity related projects are being done to accommodate furthergrowth in population 23 = LiQuIDS AN SOLID TREATMENT ALTERNAT..IVES EVALUATED IN THE CWMP Refirninary Primary Biological 1# - Removalnt Treatment Treatment # Management LC:t l?erta,ez Adtltta0nal=JF6�� Granular 3Media FFhrmicna � FcKtecl V;:er -�;,h';Cit? dr r�,entQt+Ort •Gerc Sec ll1!L` Flef I neves r F:er o al Cherni�celiv Enhanced -Fa,IseQ Bed •C3t±r.�cc�M primary Treatment ICER feta-Fee€I • '�"ti z rse Vie:Yc�ed� rter t:C' C rt*rateo G-nBa in 9 - C!sc�ii'ers Public:Access Rein e Err1'tanced Hi h•Rate � "ec�uertc+r Access steun.;,mt w *°�tL C7t Basins i CfarA;,r t,cx�1E�RC� batch Peacto*s _ Aecyy,ed►"Jane*for E1'�r':etra.�:n Larsdsca •:uta►.HeadCell mechanical CA +Den"ptr+fying F,ller3 Lh of ftra* ptn gi . u{viUrXV !;nt cr!ng PrirlmaryTreatment (DeNFt i�k�"7'3r,3ic�l HY �'4loriie f 'large t0 lt4lC!ee� __. —... 'Di.Sec,t nue C!u'tfa, - k"Ja5l7i'tg �- Ad3orpAi{3ri CAa+lr18BR w p rte•` FeraCe'iC ACiC f?+iAi to u+sur:Bays - E Ce tan,�ed C3'3cha.,ge •; e-Cla�,ifi�r DORS[wlUdpl'C rrl,cat n i.1 CA -F BAF MBP tC►ylJ;3UI'Say: •l;u�ek sla�sryCup"`ar.aii .____._-_— - !PE#�Rfl T - $,mtlltar'�'CtJ3 Nrlr,f,taUort+ B3'ldvLe.'i`:Ccvjl"cnr • €L�sd�bo Wa`,aar PtrMary F7ltrat,on # DeN{rfd�tiOn Ditch 4aeLt.P1cn;e3tiOr — ■-ubei•vr�nsta __ ..__ .._..� Ftecyce:+'aster _ ---- t 1ntegrateo'Pitied Firm to fiver WateY. •�rher Variatiera;,or _, -Li�i�d Above Fr,mary MUM Pitfat,on #r:�tafaors3 cf fit.Tye Activated u udge 11fAv} DAF Ctarif efai idestream Trewment- NA :,dQ3trClrrl Treatment CaRPB e 10e3vearn Treatment- Annamo. Solids StabilizationProcesses Aci t or pti oniS io-ox,d evon B ia5 E-d,Cth'dat?C y� ` [j Emerging/ Nitrite vllunt 4 Embryonic Rim 190 ow 18A EA Technologie5 '-� FJiotMla !v4HF5riw D—:��r MAC T Drying D�tect Zeolite Amnicnia Aernoval ;exi3ttng jryrng 1_lnr` Tnerrn��hific v rs f Liquids Tee t�7el7Te 1rr Flo ies =-�iE Thermal hidire L Reac.or Anaerobic On ruin g :aarf�cat��an �•,�drar+�sas��` Digestion TPAD+ Z] AG Hydratherrnal Anaerobic U�u�fa,c�ior4 i ao ogrca! `n^arend utaercr�tGeal vdroiy5i3= i Water iT e*^ Oxidation TRIPLE BOTTOM LINE PLU ANALY 1 . OF ALTERNATIVES LICIUIDS ALTERNATIVES SOLIDS ALTERNATIVES Alternative Ll-M LE+MF+ISO_Expand activated sludge Alternat"'e,S1-F131s:Replace MHFs with tivo FlvxJlzed process for biological nutrient removal(MLEE or Modified Sed incinerators(FB). Ludzack EttnWi and add microf ItnitionlWIF,and reyerse cismasis(Rop fcc r9nerv,recycled water. Altemative!;2-Digestion+Dryer+FBI:Add anaerobic digestion and drong followed byona FBI. Alternative LZ-RALE+MBA+RQ:Expand acby3ted sludge--.::ass for bittogkal nutrient removal and Alt ternatve S3-Digmw On-,'y--Add standa,lone, add mer,--ane bioreactor,(MBRI)and R-0 for refinery anaerobic digert.,wri with a Virma i 1-4?drolysi i to recy-lid warner, produceCass A bio�lfids that-will eliminate the V-ze of incinerabon, alternative L3-IFAS+MF 4-RO:Canwert activated sluz[ge to s ntegrated fired film activated sludge a rMf add M U40 t, r re fi r�ev recy c f @ d water_ At ater- At the workshop,the team scored the liquid and solids alternatves fcr ea& category and ob,p ve.in the end,--the team selected liquid 3trearn-Altematwe L-2--MLE process"or nutneM remicival and*ZhA MOR process for recycled waver Production forge ref nedes and solids aherriative-5-2—anaerobic dige.,gtion followed by inclneratiors,where the exist ng MHF1 wont Da replaced with One FBI w hen the M H Fs reach Ch t he eridt of the i r use fu I life. TI ruvide Refiat>Jv,and Derformarrie SI!Protect'-�ub!ii;---&tth and!5afety TZ-Effiovenoy and flexjbilirr '_-,Z:149irtain Good%bk 96rz F-I.-.C&fir&!Cazu E1:Impect cin�-zvel Er-.,irznrrien: F2.Crimi COM-- Ir-r-wit on Gabe!Ecnviror--mer.t T2 T2 T2 TI T1 TI T1 T1 T1 Ti Tf ideal Alt Ll Ali L2 Alt�-3 Ideal A!*.S1 AI;S.2 Att S3 '61,0 Digezi-ion— Ig rt �temfftive VLE VLE— i CAS Aftemrlive — } MSR+RC 1715-1 N Lj4vtd.i A1ref-n&,.,;vec r.j6L— Summary SaLW&Afterr-a6ve.-TRL+.1,car.7%g gurntray-y 25 F URE REGULATIONS 5. NAVIGATING THE FUTURE REGULATORY ENVIRONMENT CWMP recommendations for the EXPECTED BACWA NUTRIENT DISCHARGE LIM ITS AND treatm ent pl ant we re d-evel ope d to COMPLIANCE SCHEDULE meet existing reg0atori requirements, Assurned Complanc and to provide the flexibility to ConCentr4ation.ffig/L scwule m eet potenti a I futu r e requ I M ryTotal M diate coffvwnce iArnrnonia Nitrogen Phosphorusl Design Deadline requirements-Key findings and recom mentations are listed he low: Levei I OPV,Mize n utrients(no exact limitsl 2019 2024 2 15 0 2027 2037 Assumptions for nutrierrt limits and cGmpiiance 2 6 0.3 2037 2047 schedules were based on the F2, d f�Oa r, e B av Area Clean Water Agency The Ho vever,a more robust (BACWA)Scoping and Eva ivation current p racti ce of inn=rye rating expa ns on of sol ids hand=in g vv4 I Plan for por-ential nutrient wastewater solids and ash reuse be require-d-In addlion,over reductsion.- as a fertil iz er amendrn e nt is a the ney.-t 5-years,Central San Microccnlituents and CECs-, sus7tainabl-e option in the current will explore other inn native and re i gu iato ry environment and is emerging solids handling and The current trend of increasing expected to remain so over the resource recovery technologies monitoring requirements and planning period_So4ids loading that may prove to be viable loft-g_ regulation of mi-croconstittients projec6ons are expected to be term solids handling solutions. and other constituents of h i--gher than t h e M H F pe rrn itte d emerging concern(CECs)could average annual capacity within Future Recy-cied'vVialef Use Central Sanrs current recvcled water lead to new limits for Centra'Sar, the next 20 years; ,thereforeto I in the future.However,since the increase capecity,diversifying production is five percent of the scope and tiro Ing for potential wastewater flow processed at I I-Im its is I u n certa-in,new so I=ds treatment and reuse the tra atm ent plant-To expand facilities to target CEC reduction opo.-rims ns wi I i be re quired-Central recycled water prod u ction S S an's emergenpi sludge storage were not included in t1h e Cl P.To and loadoutfoci lity,where and use,,Central San 4tw it I need ensure adequate space for these to dewelop agreements%,v ith deivatered,unstabilized solids facilities,a future CEC treatment can be temporari4y hau-111ed offsite the agencies responsible for system was included-InCentraI to another treatment facility,�-s purveying water with in Centra' San's site,plan. San's service area and po ss ib Iv the current contingency plan. partnerwfth�water purveyors outside Central San's service area that may have a more immediate need for water. 26 !1,',,,- ENE GY BALANCE FINDINGS Energy Balance Findings and Recommendations 1. Greenhouse gas emissions 3- Central San"s objective for the Odor Control HVAC can be maintained below the treatment plant Is to achieve Net GAS% Screening California Air Resources Board Zero Energy-Net Zero Energy Final EfflUent Pumping anthropogenic cap-and-trade is defined as"using enoughIncineration,16% -nent 0'id3 tc- Primary Treatr threshold of 25,000 MIT CO2 per renewable energy to satisfy !Mcin-erken year by maximizing landfill gas annual energy consumption 34% Thickening usage as long as possible and requirements,"Central San will Other continuing to recover energy strive to achieve Net Zero Energy Service Air from the wastewater solids.The by improving energy efficiency in Influent Dewate ring,6% cogeneration turbine provides a the following areas= Pumping, 13% cost-effective way to generate aSecondary ......... Decoupling the solids nd electricity on site,particularly Treatment,6% liquid processes by replacing _andfk klatural Gas with the current low price of the current eiergy recovery 13c;z- 531% Other Solids Prima natural gas.It also significantly system and steam-driven Processe5,6% ry Effluent reduces Imported grid electricity Energy Source Profile at Treatrnent Pump -111% aeration blowers with an from PG&E. Plant Organic Rankine Cycle(ORC) 2W water,7% UV, 10% 2. Landfill gas production is turbine and high efficiency Filter Plant expected to decline overtime electric blowers and new (Reuyclepd Waterl,7% as tie landfill ramps down its efficient diffusers- Treaw-ient Plant Energy Constirription by Process Area operation.In the future,more Adding anaerobic digestion) efficient solids handling and upstream of the MHFs to energy recovery facilities Mil produce blogas and generate provide a sustainable-way to electricity. minimize costs and continue to Replacing the existing operate below the cap-and-trade threshold—even If landfill gas is cogeneration turbine with a no longer available_ larger,more efficient turbine. Adding renewable energy sources,such as solar,wind, and co-digestion of irynported high-strength waste(HSS) such as fats,oils,and crease (FO G), 27 RECYCLED WATER EXPANSION PROJEC S RECYCLED WATER CAPACITIES Exisbn Approximate Capacity, mgd Recycled VYalerComponent Delivery Pumps Applied Water PLImping 411) Tertiary Filters 6 to 111°3) New West l xistin East ISyJ t X C � Backwash pin ..� ��clearwell Cover lea /f t2(41 i L Disinfection: Clearwell Storage and Contact a, New chlorin '�aLa Time Facilities g contact Basin f Recycled Water delivery Facilities 5 ........ ....... Ex ting , Finer Plant ' New Filter "wry :1: 4, (1)current operational capacity is 4 mgd.To efficiently mRe1 deman&above 4 mgd,modifications "4 --- would be required,including adding VFDs on the 300.HP pumps and replacing the 50 FSP pumps with .� ... �,��,. larger pumps-The applied water pumping capacity corresponds to a recycled water production of 3.6 Backwashartk l mgd assuming 1 of filte,feed is ultimately at�el�,�used for back.�ashing r gd'9L = rngd_ Existing) „. LEGEND (2)f=ilter apalclty based on performance during April and May 2016 filter testing..161 mgd capacity with a F cxebays Existing Suned Pipelineour rain;mum filter run time 95%of the bine, 11 mgd capacity requires decreasing minimum filter run New Fac�EitreS 24 hour to approximately 14 hour rapacity based on three filters in operation at a time_ (3)Madificatlon-J,such as adding a new static mixer and in trumentationf nievering improvements, would be needed to achieve the f6ter capacity shown. 14)Backwash pumps have adequate capacity to backwash one filter cell at a time_The maximum bavkwasl rate is close to the original plant deVign criteria of 25 gpm/ft=and exceeds the current backwashing rate of about 20 gpm/ft=- 28 RECOMMENDED TWENTY-YEAR AND TEN-YEAR CIP CAPITAL IMPROVEMENT PLAN CAPITAL IMPROVEMENT PLAN "he C ,--mp eherflwve Wa-atepater Mactey,Man encu-nparm-%a S'.8 billion(2016 doplar-,,4'=- -yeer captal srFrrove"rft praqrs-n (CIPJ' the w tor rvwfn aryl treatment plant-wth U73.,nillion of capital i-nprove-rnerftwithin the firct t-j,.-.y-e-arm.7:o,,eqe whort-t&ron and JoN-term inwaqMn&1U-,n our aystewnr.align with our minion to abNayT.prom-tat pubic health ww--4 the environrrve-t arod n'1)aqntft1r$the exotAert serAce levels our cxi-itcners c-xc---att f�a Cc-i-j-aj sar,. 113® W2 I QON i4fM [I w 11A*0 Fft 0 Lw %Npbcp WIF wa f%d :��Wgadb:Pbdm ED Fum"rmabn Tons WMA'ad N, phried Fmcft'm YEAR CIP 120-YE General I m provements C.-Meral knProv=yeats 1-11-,'_`2,. S54,724,C= Recydleed Water contirk�� Ftecycilled~e�r Cor*ingency S24.073,CM. /W --Nqqsal qxo.cco S26,123,00C- 0-0c,COC', .. . . ........ Treatment 14ant $446.507.000 off Tatal,I0-year QP S872.653,CTO Total 20year CII V,803,474.0W 30 ,. RECOMMENDED CAPITAL IMPROVEMENT PLAN 2017=2037 10. RECOMMENDED CAPITAL IMPROVEMENT PLAN The"-a pital Improvement Flora(CIFiencompasses a S-1 8 gil!iar, (2016 dollars)20-year improvement pro grarn. 1% 3% The Master Plan's recommended projects were categorized into four programs 1L.Treatment Plant(58S6 Millionj 2_Collection System M19 hlHion, 3. Recycled Water(S20'Milhon) 4.Genera!Imprevements-($54 Mflton'i 47% 49% A fifth category"Future Unfunded'includes other identified projectsthat are not currently included in the CIP.These"future unfunded"projects amount to an additional 5920 million beyond the SI-8 Billion CIF,of which appi­Gximately 5501 m.lFon may be with-In the next 20 years. Some of the-se proJects were llidentifi ed to meet potential uncertain future regulatjDns and other projects expected to be cost-neutralto Central San,stich as the fu-toure Treatnic-tit P'ant wholesa-e of recycled water. Collection 6Cyatem 9 eCVC led Watcrr G-neral morn-vements r6;of 20-Year-CIP 8 re a k own try Pro g.-on 1 S 1 3,0 0,C C 0- IQ'I OD,c4m,X.10 Ml_. S Z 0.COG,DDrd so, :019 Z"11KC 110-116 1" ­r2'_!ice 5 ZU--_6_-5_7 OX G-J 2030 21 203AZ Z M- -024 2125 2.036 5=re2a 0 Co Fjecyc.ed'Nater 2 Gene-al lm;ycrue-c­tz (in 20[(5 Dofla ra 31 To ta 120-Y�aar CIF An nrat Ca a h P.o w PROJECTS IDENTIFIED IN CWMP BUT NOT INCLUDED IN THE CIP* (Referred to as Future Unfunded in this Presentation) • Nutrient Removal BACWA Levels 2/3: Possibly beyond 20 years *** • Refinery Recycled Water Projects - 20 MGD ** • Potable Reuse Projects - Additional �10 MG D ** 0 Advanced Treatment/Contaminants of Emerging Concern Removal *** • Renewable Energy Projects (triggered by increased power demands from nutrient removal *** or wholesale recycled water projects**) • Concord Community Reuse Project (CGRP) Recycled Water Facilities Improvements ** • CGRP Collection System Improvements ** • CGRP Recycled Water Distribution System (Central San current plan is to wholesale recycled water so distribution system was not evaluated or included in GIP) ** * These future projects are not included in the CIP and amount to about $920M, of which approximately $51 0M may be within the next 20 years. ** Projects expected to be cost neutral to Central San. *** Projects identified but not currently required by regulations. 32..",:: ' PROPOSED 10=YEAR CIP $873M OF IMPROVEMENTS IDENTIFIED (In '000) Shown in 2016 Dollars FY 17/18 FY 18/19 FY 19/20 FY 20/21 FY 21/22 FY 22/23 FY 23/24 FY 24/25 FY 25/26 FY 26/27 Treatment Plant $18,045 $18,707 $500502 $48,611 $46,182 $56,523 $51,636 $23,375 $34)950 $37,392 Solids Improvements Phases 2&3 $0 $0 $0 $0 $0 $0 $0 $20,190 $20,190 (Digesters+FBI) $20,190 Collection System $18,492 $17,180 $35,752 $38,000 $39,440 $361*759 $38.0293 $41,739 $41,985 $45,703 Recycled Water $460 $540 $1,210 $5,771 $5,771 $125 $1,647 $9,099 $125 $125 $4,277 $2,912 $3,456 $1,943 $3,298 $4,173 $1,798 $20798 $1,798 $2,570 $1,500 $1,500 $2,000 $2,000 $2,000 $2,000 $2,000 $2,000 $2,000 $2,000 Total CIP $42,774 $401839 $92,920 $96,325 $96,691 $99,580 $95,0374 $99,201 $101,048 $107,980 $120,000,000 $100"000,0oo $80"000,000 ' Y 77/ $60,000,000 $40,000,000 $20,000,000 $0 00 4-4 M eq f%j "til N r*4 Cn eq LL- General Improvements Recycled Water Solids Improvements Phase 2&3 (Digesters+FBI) Treatment Plant Collection System 33 RECOMMENDED BOARD ACTIONS 1 . Find the CWMP exempt from CEQA as a planning document 2 . Accept the draft CWMP 3. Accept the CWMP Technical Executive Summary 4. Provide comment if desired , and accept the CWMP Executive Summary for community outreach 34`„�-„) Al Qu STIONSs? t 1• "� 35 5