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Home My WebLink About3/4/2009 - STAFF REPORTS - 2.J. �FALM Sn > Rey U n oej City Council Staff Report Date: March 4, 2009 CONSENT CALENDAR Subject: APPROVAL OF A NOTICE TO PROCEED FOR VEOLIA WEST OPERATING SERVICES, INC., FOR THE DESIGN PHASE OF THE GRAVITY THICKENERS UPGRADE, CITY PROJECT 09 02 From: David H. Ready, City Manager Initiated by: Public Works and Engineering Department SUMMARY Approval of this item will authorize Veolia West Operating Services, Inc., ("Veolia") to proceed with the completion of plans and specifications, and construction bidding, for the modification and upgrade of the gravity thickeners at the City's wastewater treatment plant. RECOMMENDATION: Authorize the Director of Public Works/City Engineer to issue a Notice to Proceed for Veolia West Operating Services, Inc., in the amount of $50,223.14 for the design phase of the Gravity Thickeners Upgrade, City Project No. 09-02. STAFF ANALYSIS: The City and Veolia continue to coordinate on various capital improvement projects at the City's wastewater treatment plant that will improve the efficiency of the plant to process wastewater. Part of the wastewater treatment process involves using "Gravity Thickeners", which are 30 feet diameter, 10.5 feet high tanks that are used to help further segregate solids from liquid during the treatment process. The more efficient the process, the more solids are removed from the liquid. The City has two gravity thickeners, which were originally designed for each thickener to receive both primary and secondary sludge. Primary sludge is made of the solids segregated from liquid in the "Primary Clarifier", the first step of the wastewater treatment process, which are large tanks that allow the wastewater to slowly pass through the tanks causing heavier solids to settle to the bottom as sludge. Secondary sludge is made of the solids segregated from the liquid in the "Secondary Clarifier", a later step of the wastewater treatment process, which are additional large tanks that VTEM NO. 2 .07 City Council Staff Report March 4, 2009-Page 2 Veolia Notice To Proceed (CP09-02) cause the treated wastewater to further segregate out the smaller solids from the liquid, which settle to the bottom as sludge. As the sludge from the primary and secondary clarifiers is over-saturated, a further process called "Gravity Thickening" is required to segregate as much liquid from the sludge before sending the sludge to the digesters for bio-degradation. Gravity thickening uses the natural tendency of higher-density solids to settle out of liquid to concentrate the solids. The current wastewater plant flows of sludge are hydraulically surcharging the existing gravity thickeners, allowing sludge to be sent back through the primary clarifier, which is decreasing the efficiency of the overall wastewater treatment process by allowing solids to be re-mixed with liquid. An upgrade of the gravity thickeners is necessary to allow further segregation of liquid from the sludge to occur. In accordance with Section 5.3(f) of the Amended and Restated Wastewater Services Agreement between the City and Veolia, Veolia is entitled to make a first proposal to do any Capital Project related to the wastewater treatment plant. The scope of work for this project involves a field investigation of the existing gravity thickeners, hydraulic design, preparation of 95% plans, design management, design coordination, and pre- construction support services. Veolia's proposal is included as Attachment 1. Staff has reviewed Veolia's proposal, and recommends approval of the fee of $50,223.14 which includes professional design fees for Veolia's consultant, Veolia's labor fees for administering this phase of the project, and a 12.5% gross mark-up as authorized pursuant to the Agreement. FISCAL IMPACT: Sufficient funds are available in account No. 420-6800-57018 (Digester Rehabilitation). David J. Barakian Thomas J. Wilson Director of Public Works/City Engineer Assistant Cify'Manager David H. Ready City Manager Attachments: 1, Veolia Proposal �Ir EOL1A Master Cost viiw�eA_ Summary Sheet ROJECT DATA INPUT b No Poli No.. Location R.Wel.. Date JCH Model 'Tao C nTn,exnnnrf:-n rinn ov-n.Fl nlvmyn, mm�,4 r •cq .A ox/19ro9 P,CC1e Wmeer tiL'%r l,i.knm!m-011ion 02-0nb nlPn•Onnel Job Numb Tao Master Locmben i1n1m E prop,cA Job Cost Esfimate,Model Pmfect Man ogCrl Hubpll Ulcm Fmpo:ol Menngor•I bn C. VCmlcn 19,1/912002 oCR DOW I .,..a password(1111) ReWlpn: Od CONTINCFN Y MARGIN CCn:.GGn Subc..tiadprs 00 �,un Sull On,.n S 620,:25 alllncpMg Cmeull.rtS ggR 125k Martin 3 2 272 Inl0rwm0any Selxue�_Os¢"F Malcrlal E Cyulpmcnl: 00% 125% L0-, 0OU 12 ST CNad Crass Margn Trawl ants UN, gg'n 125Y 1250% Tama Honda ONcr 00% 1Y 5% Silo CNsls .. is SA, TOTAL 3 S G 27G QnOt.G_gst. Contlnnc No= _ total _ •Lor IOU Dominican Eubcpnlnclpc - 5 - 5 00% 101 Ole Remetlinllpn EnbennVncln(x $ - $ - Y - i$ - 1 - 00% in9 Fnn SyB; hponlmdnry _ _ 5 5 b - S - - 00% 103 CINIICpnemlc Eu,C.r1raClptx $ - - T - .s 00% Inn I CAoAr li IId1n_5ubconouclpn 3 s Y `E - a0% 195 MCcbanlcal In t,linlbn 3ubconnndp¢ 5 _ _ _ 0OA 106 Flncldbll lneeJl.n,nn.^.,,n:nrnc,nnr. 5 - 5 - Y - L _ - 00% to, Finbd Grccicd Tanks Subcuiiacl., 5 3 5 ,Si -' - 00% ,Ci MI:edlaneou,Inslnllnllon SWmulmmon• 5 - L - $ - 5 _ 00% t5C p,nfnrwln�ll^.nMc,ra 5 25000 5 5 3571 il5 2P S71 569% IGO Inlc¢pm an Ecnvcc 5 OOl6 SUBTOTAL S•�••_�� APP',...S.... ,_J571. 9fl5]I 5E 9% CALC EO M4ROIN 1 1250% nnn DimctCost Gonfifflama 613m1n _ =d ai- ;isl 200 WaWlenlF ul m'n S - S 1 - 00% 210 rl,�n)'ca E u marl 5 - 5 - 5 'S' - 00%. 229 r1mmomp,by Ebulpmnnt y - y - y - s - -1' 00% 210 tNln ' monl 5 3 S a..W� - 00°l, OVBTOTAL sA. 0Mb CALC EO MARGIN - Pe,criplion r h,. Co,t Cp tln ene I _ IpN11 •%AaAl 300 Pm tr:I M.vun nIl nI $ $ •S' 00% &1440 Sen orFroactMma emenl 5 1C962 5 - 5 213] 317 C99 9A 0% Pm.d Cwrt I'l y - y $ - § 00% Admnlslrlbn 5 1390 3 5 197�3..r 1677 31% Ccndmclion Mannm Y $BO3 4 - S 372 5 29T5 G9% ^n,,.6llgppl .nn� r s s s 1L - oow ur Con:Wdbn Mana cr 5 - - 5 - 3 0.0% Pmod En Innnr y - y - - S - 00% 5 - 5 - 5 r5 00% a.. Labor CommSvinn[ Y - T - Y - y, - 00% } 0OV. EUSTOTAL § „_., JS 015 § - $. ,_a "n.TOGi 1 a f.. 21052 631A CALI LO MARGIN 1250% AM-MAVELL LIVING I CONCUR plmdcoq Contingene Magin Zmal h0[a01 400 TravdELlWn 5 - E - 5 - 113' OOa COO TmxtlRliui, $ S T - 02 SUBTOTAL 5 i.. . - 5 i.i. .5, , S 00% CALC ED mARGml. - gitcCUDvzl Gg)7[ImOtuat Margin _ 1o101 'Lora,. 5,rm[cl&LINn S - - 6 1�5^ 00$ 4i Tmcel E Llpn Olbm �T 5 - - 00% SIBTOTAl..$_L_—.�r� S, i_..�� _,L,1.`�� OC9: CALC EC MARGIN - OImcLCoat Care....0 MO,nin _ _ Snwl %of SO Sao CnMrrtlnLy 3 - 5 - $ - r$'r ', a094 �400 Sun•I Bontls 5 - 5 - 5 F5 O0% Soo Ed Bo'& Y - F - S - E - 0.016 Soo al,lltln ItlJ�psumOce 5 - 5 5 �StJn� �_nenl L6 bllll ln:ulancc S - 3 S - 0015 500 3olo�El1•c Tnx 3 - y - ' - 1E. 00.6 500 Ilenuzn/Cm Wfiyp $ - 5 - - 00% yr�tl rc dOowlo mcnt C.aL• 5 5 5 Ii '_. '. - nno SUBTOTAL 5 .. -,.,. . 1..5.:.:.. ,� - 5 gg% CALC EO WRGIN - nor cnn Rlsds:ga sp,rtlmengv MJ,gln Total Y.or sd GOO A Genoral Sllc Cost 5 - 5 - 3 B00 CM-.1 F $ - L - - E _ 0.0% 02 0 Slmla C 0 1 1 s 5 5 •5 Ott SUBTOTAL $ T r I s. og% CA1C'EO MARGIN - •.` $ _43.&1594 $ �rgpnyppakl - G5BM• Gross Marp 2.50% a�g71 5822314 too g:t (i CD .nnlnln(Y Yllnnl PJOuloll