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Home My WebLink About03/08/2016 Council Presentation - M&C Wastewater DiscussonMARANA If4 Pr 60 4 Marana Water Reclamation Facility Expansion 2013 —Final Settlement occurred in June., began recharge facility feasibility study 2014 - Initial projects to provide stability to current operations, began design of recharge facility 2015 -Began treatment plant master planning process, complete recharge facility design IM1► =l► =19 VISTA ;U & - ]I d;4 SMs11 Future Re6harye Basins Water Supply Well and - - - " P C #1 Secondary Effluent Pump Station Ternary Sand . -.° Blo very � Filters Electr cal . # Drain PURL] Br,ilciinc� UV Disinfection = _ Station - Bac Effluent Storage - � rilOnnation 46 '� Pond If Chlorine � Box No. 1 - F ri Contact Basin . �..._ s � . Biolac I I Basin Enrs.ictE�r�::v Ot lttt� Il lc�Slrl I Structure •�# '' ri�rrrrrrrrrt Metering Utilit ater y L Dechlorination Pumps E5U�1 {_,III I .. Box No. 2 le f F .ter AT ' Sludge Influent Biofilter �` ,,_ Storage Pump _ - '► aLfl{c'3{f,' Station �. HeadWOrks Plants IM1► =l► =19 VISTA ;U & - ]I d;4 SMs11 $16 14 $12 $10 L $ $6 D 1 1 14 12 L 10 Q U 4 2 Sts L i 0 L� * 0 l c O Sao $15 $10 $S 3 0 IV IV NMI CCU 1 %2 f A M O Puhaa Red Water Supply = B•silns Well a nd POC #1 Secondary Eitl o ' ! Pum S1alion Tertiary 5., "+ Blovrers i J Filter.• - Fi.• .li : ,i pram P1. UV Di Swim) HAGrup ` r' .z. Eff&7 k Ghl#?LIf}�}t1017 y 46 Pond I Chlorine Box No. 1 ` Conrad Basle 4& P BIOIeS: B Emergency OvCrflpn• { OwifaW _ Basin i Structure Control - sty Walor u�ldin� DechlorknaOcn P Box No. 2 I MM rant BIOII M8t [A C' ti SEorape Pump . � Plarrls IMARANA WRF SITE PLAN • 0.5 Mill G allon p er D ay (MGD) Biolac Treatmen system • C urrent fl average is 0.370 MGD • With increasi strength of sewage operations are i ncreasingly more diff • S sludg costs Items to be considered: • Growth Assumptions • New Developments —Gladden I & II, Rancho Marana, Fianchetto Farms, Saguaro Bloom, others • Treatment Technologies • Stay with current, upgrade to other options, etc. • Long Term Operational Costs • Sludge dewatering, energy consumption, operator oversight, etc. Based on Based on Source: TM -1 Flow and Load Review and Projections, Westland Resources 2. PA mom% 1.5 U . a 0.5 .X 2015 Marana DMA Flow Projections 2020 Year 1.2 mgd 2025 Assuming 52.3 gpcpd Assuming 80 gpcpd 52.3 gpcd 80 gpcd Year AADF AADF (mgd) (mgd) 2015 0.355 0.355 2020 0.67 0.7 2025 0.95 1.15 2035 1.78 2.25 Source: TM -1 Flow and Load Review and Projections, Westland Resources 2. PA mom% 1.5 U . a 0.5 .X 2015 Marana DMA Flow Projections 2020 Year 1.2 mgd 2025 Assuming 52.3 gpcpd Assuming 80 gpcpd . 4 ms s• ' � , - - r_•aa. - � � �/ IN •_ r � y ..a 4 t }. r r. f L / J� L fI ,� I [� f a R Pump station litter Box AeraGorr Basin �0.75 MSC rapacity Aeration Basin Future �� + &'75 MG!D Clarifier - * ; I Capacity F i h _+ Existing Prop"IFence Line - S Fdure i �. Bl�ver Clarifier ' + BuiidinglCanopy - — 'r. + I - - - --- L+ - - L y llrM VP j + Y yr~ Te ' - . r �- -' i I z� r. 'tti wa ' Y 1 r . d lb e S . 3 I ti k I '1 1 C _ I••� 4 1 Solids Handling Facility - - -, -� , - Future IrM uent Pi ping Alig nment — — - - - — I -- Fut..-e MaIrrGE ^anc-e I Building i ,F • ' � , Future Am-nini5tratian j = - �� Building — — Marana WRF Master Plan Process Option - New 1.5 mgd CAS 1.5 MGD Phase 1 DESCRIPTION General Requirement 8.0% $767 Yard /Site Facilities 12.0% $1,151,305.98 New Influent Sewer Line $99 Headworks Facilities $726 Influent Pump Station $157 Bioreactor Splitter Box $229 Retrofit Existing Biolac and Liner Repairs $ New 1.5 mgd Conventional Activated Sludge System $3 Secondary Clarifier Splitter Box $206 Secondary Clarifier $2 RAS /WAS Pump Station $455 Tertiary Filter $ WAS Storage Tank $243 Dewateri ng Faci (ties $917 Subtotal "Baseline" Direct Costs $11, Escalation Contingency 3.0% $348 Design Contingency 25.0% $2 TOTAL DIRECT COSTS $14,863,664 General Conditions 10.0% $1 SUBTOTAL 1 $16 Bond and Insurance 2.5% $371 SUBTOTAL 2 $16 Salex Tax (at 50% of current Marana tax rate) 8.6% $830 TOTAL ESTIMATED CONSTRUCTION COST $17,552,501 Plus ^'20% for Design, Permitting and Construction Services: $21M required One primary process to maintain /control Operational control and flexibility Longevity Recirculation is optional Water quality loading Technologically advanced Repurpose existing plant Low aeration /power requirements Lower sludge production Built above ground —may be able to eliminate some on -site pumping MM"r IV High up -front cost Short sludge holding time 4 F 11 1 Wj yj Ir to i L 4 F 4 lit 1 # I � r i F if ' II I a I • I' I+ tl i • ' * �. jd!� I i P t r • } + i# Marana WRF Master Plan Process Option - New 1.2 mgd CAS 1.2 MGD Phase 1 DESCRIPTION General Requirement 8.0% $682 Yard /Site Facilities 12.0% $1,023,343.43 New Influent Sewer Line $99 Headworks Facilities $726 Influent Pump Station $157 Bioreactor Splitter Box $229 Retrofit Existing Biolac and Liner Repairs $ New 1.2 mgd Conventional Activated Sludge System $3 Secondary Clarifier Splitter Box $206 Secondary Clarifier $2 RAS /WAS Pump Station $401 Tertiary Filter $ WAS Storage Tank $243 Dewateri ng Faci (ties $917 Subtotal "Baseline" Direct Costs $10, Escalation Contingency 3.0% $309 Design Contingency 25.0% $2 TOTAL DIRECT COSTS $13,225,743 General Conditions 10.0% $1 SUBTOTAL 1 $14 Bond and Insurance 2.5% $330 SUBTOTAL 2 $14 Salex Tax (at 50% of current Marana tax rate) 8.6% $739,319 TOTAL ESTIMATED CONSTRUCTION COST $15,618,280 Plus ^'20% for Design, Permitting and Construction Services: $18M required One primary process to maintain /control Operational control and flexibility Longevity Recirculation is optional Water quality loading Technologically advanced Repurpose existing plant Low aeration /power requirements Lower sludge production Built above ground —may be able to eliminate some on -site pumping MM"r IV High up -front cost Short sludge holding time Would have to begin expansion sooner r - f f k � F • f � f sr,as r. t � u Y . I J IF LO IL r � 1 1 O P L ■ k ,• I Y -to , M J_ • y 44A • If � N 1 .. ,� E 1 1 I •. ip -Lip POO* F � + i Y �. kk _ �, ip Marana WRF Master Plan Process Option - Retrofit Exist Biolac + new 0.6 mgd CAS 1.2 MGD Phase 1 DESCRIPTION General Requirement 8.0% $605 Yard /Site Facilities 12.0% $908,386.31 New Influent Sewer Line $99 Headworks Facilities $726 Influent Pump Station $157 B i oreactor S pl itter Box $229 Retrofit Existing Biolac and Liner Repairs $300 New 0.6 mgd Conventional Activated Sludge System $1 Secondary Clarifier Splitter Box $206 Secondary Clarifier $2 RAS /WAS Pump Station $401 Tertiary Filter $ WAS Storage Tank $243 Dewateri ng Faci (ties $917 Subtotal "Baseline" Direct Costs $9, Escalation Contingency 3.0% $275 Design Contingency 25.0% $2 TOTAL DIRECT COSTS $11,754,292 General Conditions 10.0% $1 SUBTOTAL 1 $12 Bond and Insurance 2.5% $293 SUBTOTAL 2 $13 Salex Tax (at 50% of current Marana tax rate) 8.6% $657 TOTAL ESTIMATED CONSTRUCTION COST $13,880,644 Plus ^'20% for Design, Permitting and Construction Services: $16M required Lower up-front cost Utilize existing plant longer 1 sm - V IV W Mom Need to rehab existing Biolac Operators must manage two separate processes; more complex operation Possible shorter construction time Regulatory compliance becomes more complex Biolac will eventually be replaced (sunk cost) Higher aeration /energy cost Higher sludge production (from Biolac) Would have to begin expansion sooner _ - _ 4' __ ` - -- - _ ._ - - T wmb� RASWAS 9L bp ran I 5 - _ L —6 _ - ti — z r 7� �r.�JYur a IrC��rk - - ti 3 •• r * r - ,lam•. � �." F . _ f stir ; Pf o �! F4j�cq Une # ciaii no r ! 1 .k _ �r �r F H d Ir t � Jti d , 4F J 1 _ k F dba ir F r" *.; ' M4 *titer ± _ + IL air' n'r ! � 4 rF ■ _ F . . - . -- fry.'- r'.`• ; - ;: f'.Y".�":. - . i ! r * ~ ` * I Id ti ! Marana WRF Master Plan Process Option - Retrofit Exist Biolac + new 0.6 mgd Biolac 1.2 MGD Phase 1 DESCRIPTION General Requirement 8.0% $532 Yard /Site Facilities 12.0% $798,572.51 New Influent Sewer Line $99 Headworks Facilities $726 Influent Pump Station $157 Bioreactor Splitter Box $229 Retrofit Existing Biolac and Liner Repairs $300 New 0.6 mgd Biolac $983 Secondary Clarifier Splitter Box $206 Secondary Clarifier $2 RAS /WAS Pump Station $401 Tertiary Filter $ WAS Storage Tank $243 Dewateri ng Faci (ties $917 Subtotal "Baseline" Direct Costs $8, Escalation Contingency 3.0% $242 Design Contingency 25.0% $2 TOTAL DIRECT COSTS $10,348,675 General Conditions 10.0% $1 SUBTOTAL 1 $11 Bond and Insurance 2.5% $258 SUBTOTAL 2 $11 Salex Tax (at 50% of current Marana tax rate) 8.6% $578 TOTAL ESTIMATED CONSTRUCTION COST $12,220,751 Plus ^'20% for Design, Permitting and Construction Services: $14.6M required EFPW" � W W is WF. Lowest up -front cost Current operation One process to maintain /control Will be completely replaced at some point to maximize site potential Does not provide consistent treatment High sludge waste High energy cost (aeration) Large footprint Must remain below grade; danger of flooding May have to purchase additional land for maximum expansion Would have to begin expansion sooner 0 0 Sludge production ^011,000 gal /day Hauling 2 loads per day to Casa Grande WRF �ucrtr an 77b •`iGilAf} Marrcopa °t Kearny Chrism Ak •Chun I r�r con nunrly BIaCkWirl+r Y F#arence t r wHiTdln W IAkekrtiar, Casa Grande coa�ga RI` Cactus Forest �r Ducky Stanfield an Ca Grande Er C40WT Mde Cnrritr p e � One -way Driving IW Distance = 54 miles Churchu Arr2oni Cary Ekoy C O prCaC.�- srare _ Tir MonN A 0 d SaddktGtaoke Mar ana 1AIRF Catarina ,na Aura V Iry Muni 14# .- R rr Tartnhia Ora Yad" 4+� One-way Driving Marana Regional Santa Rasa Distance = 10 miles Landfill saguaro Fbsrrn Ywr�ls Catalina HaironapPark 9 Fopthrlls Tonque ' Go gle my Maps Tuc Tucson h+armrarA Pt+a< Sou Tucson Tucson Estates $360,620/year I haul* 40,880/year • • i n d $401 /year i n d tiw• ww +tia Cochran i : 3e5 Sacaion Aiaricopa r Kemny ChFP$Irr Ak t hen Indwri ref brence Commur+lly Blatkwater F 7E '.r v HB�d{i1 J Casa Grande Coalydge Winkllman 9V RF CaCiu# Fork #i ( H r ) Dutl Ley Ca Grande Elsven M* Corner One -way Driving v Qr Distance = 54 miles ChuKhu Maw%&City Elgy Stale ' Sad6ebrooke Marana 1 RF rna Aura V kf MAMMA R�rl - 7orlolRa Oro Valley "am One-way Driving IlAarana Regional SoniaRosa< Distance = 10 miles Landfill s.Qr,.ro Catalina I�larror PS k FkY-9 well'- Fp lhrlls Ta +L:..r Go gle My Maps , � rucson Park Tucson Sou Tucson Tucson Eslates. • Dewater solids to 15 -20% You only need to haul 4- 33 - 30 -yd roll- off /year — 1 every 8 days a 0 le Dispose at Marana Landfill 10 miles a - �ra� ' 2 3LJ Satatan mar-co" FCpFrrrY Chrralrx Ak I-Idlar+ �4r BIa[kWaftr �lorenee �� Community _ ti • • 79 .-Haytlen Casa Grande c oalydge WrnMeiman ` W R F cactus cores, Ter ❑utlk; 5sanl�eld Gr�rnds Eleven Mde Carne+ 7 One -way Driving er Distance = 54 miles Reduced Volume Churc#�u Art2ona Ctry MY Reduced Distance P Prcac : cA State Tat Mornob Oracle SMdiehrpnke Caialna Marana fF rna I ff; emmo-n Agra Y ley Marana R TorlaYta � Oro Vallay Anegarn One -way Driving Marana Regional Sams Rasa Distance = 10 miles Landfill Catalina M&e.c nal Pa FIC*Png VWOIa Foothills Tar %UC ` Coo qle My Maps aS+otTucasN P .ry Tucson Sou Tucson Tucson Estates • $3,300 /year in hauling ($100 /load *) • $ i disposal ($35 /ton + • $40,000 /year in disposal costs — (at current plant flow rate) fees * *) * Size of container & number of loads may vary. Hauling costs to be negotiated. ** Disposal costs to be negotiated Annual Solids Disposal Costs $1,400,000 $1,200,000 I o $1,000,000 U I M N $800,000 0 0- Ln E $600,000 $400,000 Q $200,000 $o 0 $766,501 511,000 $401,500! $40,000 $56,300 0.2 0.4 Cost to Dispose Liquid WAS 5 -Year Cumulative Total $1,211,542 $1,022,00 OOOA $78,900 $112,700 $135,200 0.6 0.8 WRF Flow (rngd) Cost to Dewater & Landfill Cost to Haul Liquids To Casa Grande WRF O v a l le 0 1 061 "8817 32 1.4 • Principle of Operation — Sludge conveyed through a cylindrical wedge wire basket by a screw — Free water drains through the basket — Screw applies pressure against basket to inducing solids /liquids separation • Typical Performance: — 14 %^'24% Cake • Configuration — Inclined — Horizontal -.I � J .,T InClinod SCrhw Pross (CouAesy of Huber? 1 Ulsting Filter and UV stern " k f rt Exi sting M.C_C, G enerator Existing SwLac Syst and Transformers ' 4 # ,t N Z . ; r + k F - ' t Existing Ov+erRow Bas Pa - -_ A • 1 � o Existing Effl a c- t ' S t torav �{ L Existing ��u Storag Ta I� J T f �r . 1 Els�lnip Pump Stat�an +. # 1 , c p Existing Wfilter Frophoseu ing M.0 rC - LL -• ;' ,� . e'r atenrl Aria _ Emoting Headwork Existing PaCkaLre Pldritl ■ or 4 + F ` r t • Existing col t rvl SWI 4 a �' _ Option #1 Option #2 $21M $18M Option #1: 1.5 MGD CAS Option #2: 1.2 MGD CAS Option #3: 1.2 MGD (0.6 CAS + 0.6 Biolac) Option #4: 1.2 MGD (0.6 Biolac + 0.6 Biolac) Iption #3 Option #4 $16.3M $14.6M *PCRWRD design for BNROD was �$18M (2008) and did not include sludge dewatering facilities Design & Permitting Construction Plant Commissioning April 2016— Winter /Spring 2017 Begin Spring 2017 Spring 2018 *Saguaro Bloom will add at least 30K gallons /day once project is complete in fall 2016 a a D iscussion of Treatment Expansion MARANA If4 Pr 60 4 Marana Water Reclamation Facility Expansion