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Home My WebLink AboutContract 39655-CO4• I i'> /:1J1/ i,~ CITY SECRETARY I I CONTRACT N0 .• 3'f l¢56 -CD-, FoRTrRTg. c..=~i:.~\J\:.O fa_tSfp-00 .H3 Project Namel V1age c.reek Reclaimed water Oe1very System Pt,np s~J \ 't~\\ I city Sec, I 39655 CildProjodf(,, 1 ••llP4- Project Description_ C\\'i o\ f o« ' Conlracuj Ark Contradilg SeMces Chalge Order# ! 4 Oat l 4125/'l011 City Project Mi,.! Farida S Goderya, PhD, PE City lnspeca I .... _Mi_ike_HI _______ __ Dept. Watw Tot.all Select Day Typa Origia Contract Amourt $3,167,580.00 ~.167,580.00 365 ExlrasloOae $355,132.00 $355,132.00 45 Cnidlll lo Dale Pending Change Orders (in M&C Process) Con1ract Cost lo Dall • S3.; iZi ,712 IL . ,. Ji-" ·p;;:,. __ '7-;Jji ; • " $3 522,712.00 410 .. of. CllalN Order ···.·'., 1,,,.,.,.., .. .,.~,,.::),l .;~:[< ~:itf;1¥."..'{if't' ..,,t;:-:, $24,B:MJ.UU 60 -Revilad Contract Amo"1t .. , .:, \[-,.,.?-l"'1';',' :· $3,547,562.00 470 -. . .. •; Original Flllds Avalable for Change Orders $0.00 Remamg Funds Available for this CO ~' ~ ~ ' ;;:,J!> .. .., ··,t lli' "'!-• , .. •\ ...... it:<·~f.)Jj; ;P-tQ ~·'' Addlional Furdlg (If necessa y) ~".>(---oo . "',.,,. ', ~ ··" -.··.,f $24,850.00 .. ' ' .,. PCM 006 -This oontract modiicalon request is for the mi9cellll'1eous ~ items, incuing: dilonal sidewalk acceu; tanges aid spool piece for the lnllne magnetic meter; presue indcab1 and pressure swii:hes; clean ll1d coat existing pump stilng wet. one inch stinle8a steel adapler plat for sluice gate; adcitional grating; remove and replace delerioralBd caulkilg; stailless steel silgs, eye bolts and necessay appw1Bnanoes to secure 111d safely lift the two 96" sluice gates; addltional PLC piuy11111'*1g for operator's and power consumption monilDring; elc. This PCM also inckJde two deduct (ae<it) items; concrelB aack repair and geomat for the levy reconstruction . Per lhia Change Order# 4: Additional Amcutt RecJJestad $24,850.00; Contract Tnne extension br 60 days is provided br the oonlrll:tDr to do this extra wort. The detals for mi9cellall80UI I.Wades per this PCM 006 may be found in subsequent pages. OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX It is understood 111d agreed that the ~ of this Chmige Order by the contraclor c:onsliu1e8 ... accord •d satisfaaicN, and rep1998111s peymenl in ful {bolh line and money) for al C08II ailing out of, ar incidenta m, the abo\11 Cha,ge Order. P 1 2 : 20 I N . , , .. . -' .-. ' I·/, '-. " . "-·,.l" ·. ·.~:; ' CITY OF FORT WORTH PROPOSED CONTRACT MODIFICATION (PCM). Project Village Creek Reclaim -Pwn~ Station No. I Project No. P275-70530023183 Fund: Account Center Contractor Ark Contracting Services Contractors Project No. 09128 Engineer CP&Y Engineel-'s Project Number CFW08085 Construction Construction Manager's 00213 Manager Farida S Goderya. PhD1 P.E. Project Number PCM Description Misc. Upgrades to PS PCMNo. 006 NOTIFICATION TO CONTRACTOR: We are considering making the change to the contract descnl>ed in the attached materials. and request that you take the following action: __ Notify us that you concur that this change does not require a change in contract time or amOlDlt. A field order will be issued. Submit a "Lump Swn" price proposal with cost breakdown of labor, materials, and all other costs X associated with this change, and a revised schedule for pezfonning the dcscn"bed change. -- __ Proceed with the change order under time and materials provisions of the contract. BY: ~ S-? Date: ~ J..-1 \\ CONTRACTOR'S RESPONSE: We respond to your request as follows: __ We concur that this is a no cost or time change. See attached field order. We submit the attached "Lmnp Sum" price with detailed cost breakdown and revised schedule _x __ for perfonning the described change. ~unde,-timeond_...,,.,..,..ofd,e- BY: A Date: .d/J/1// -/ / ., I ACTION TAKEN: __ Proposed Contract Modification rejected. Contractor notified not to respond. BY: Date Field Order Issued: No . Date By ---- --Change Order mued: No. Date --By Page 1 of2 Project Fund: CITY OF FORT WORm PROPOSED CONTRACT MODIDCATION (PCM) Village Creek Reclaim -Pump Station No. I Account Project No. Center 00213 P275-70530023183 Contractor Engineer Construction Manager _Ark __ Co_n_trac __ tin_,g_Servi __ ·ces _______ Contractor's Project No. 09128 CP&Y Engineer's Project Number CFW08085 --------------- ( Construction Manager's 00213 _F_an_·da_S_G_oderya. ____ P_hD ____ ,_P_.E_. ___ Project Number PCM Description Misc. Upgrades to PS PCM No. 006 ___ .... _______________ ------ The Owner proposes to make the following additions, modifications or deletions to the work described in the Coatract Documents. Authorizatioa to proceed with these changes must be approved by Field Order or Change Order ia accordance with the Contract Documents. A contract modification is necessary to incorporate the following items to the Reclaimed Water Pump Station: 1. Provide additional sidewalk access from the surge tank to the MCC building. This will improve access for the operators between equipment. 2. Provide flanges and a spool piece for the inline magnetic flow meter to enhance maintenance and allow for placement of a spool piece. This will allow the pump station to remain in the service when the meter is removed for maintenance .. 3. Provide pressure indicators and test tree at one PIT and three PSHs. This will provide operators a visual indication of the pressure reading., to help verify proper operation of the instrumentation .. 4. Clean and coat interior of the existing pump can that was reused as the stilling well. When the pump was removed, a large amount of scaling was observed in the can that was being reused for the stilling well To prevent sloughing of the scale into the reclaimed water, cleaning of the stilling pipe is needed. 5. Provide l" SS adapter plate for sluice to address conflict with corbel.The plate is needed to allow offsetting of the gate over the existing wall opening. 6. Provide approximately 36 ft2 of additional grating over the valve gallery and relocate hand rail.; The additional grating will improve operator accessibility to the chlorine booster building from the pump station area. 7. Remove and replace approximately 200 LF of deteriorated calking in the joints of the existing Final Effluent Pump Station structure. The existing calking has deteriorated and will over time affect the integrity of the existing structures. 8. Provide SS sling.,, SS eye bolts and necessary appurtenances to provide a means to safely lift the 96" sluice gates using a lift truck if the gate operators fail during high flow conditions. Since these sling., were not available previously, one gate was damaged during a recent emergency. This modification is needed to prevent damaging of the gates during future emergencies. The Contractor shall provide a letter from the sluice gate manufacturer approving the sling and mounts. 9. Provide additional PLC programming and modifications to aJlow for 1) operator log-ins, 2) pressure controls for the chlorine booster, and 3) monitoring power consumption using the existing PQMih. The following is the required configuration for monitoring the power consumption: a. The goal of this item is to enable the plant's DCS to monitor the Reclaimed Water Pump Station energy usage. There are a total of two existing Multilin PQMII at the Reclaimed Water Pmnp Station. b. The Reclaimed Water Pump Station energy usage monitor shall include the following: There art two existing PQMlls and asaociated CTs and PT's. A MultiNet is installed at tbe Reclaimed Water Pump Station switchboard (SWBDI). For the remainder of the documc:nt the followina abbreviations will be used: • RCPS _pQM _ A -Reclaimed Water Pump Station SWBD I PQMII A • RCPS_PQM_B -Reclaimed Water Pump Station SWBDI PQMII B Provide the following cable run and equipment: • Run a CAT.6 Ethernet cable between the PLC cabinet and SWBDI and connect the Multilin MultiNet serial-to-Ethernet converter. Use the existing 2" spare conduit between the two that was installed under the Reclaimed Pump Station Project. • Utilize two existing TSP spare analog cables between the PLC-REP and RTU 27 (Old Chem Bldg) Minimum equipment configuration steps are listed below: • Program I.P. address into the MultiNet, obtain LP. addresses assignment from the CITY per plant SCADA system I.P. standard • Program MODBUS serial addresses to the PQMils • Program the AB SLC Prosoft MODBUS TCPnP module to poll the PQM energy usage register every five seconds. Energy registers information are listed at the end of this document In the AB SLC convert the energy usage register raw value to an engineering unit in floating point or real number format and display the three energy usage values RCPS_PQM_A_KW, andRCPS_PQM_B _KW at the PLC-REP's OlT. Totaliz.e the energy usage in a similar fashion as the discharge flow reading detail of the energy usage totaliz.ation is listed at the end of this document. The engineering scale for the energy usage shall be adjustable by operators via the OIT and initially set at 0-1200 KW for the reclaim pump station. Sum RCPS_PQM_A_KW and RCPS_PQM_B_KW to RCPS _ PQM _TOTAL and transmit the energy usage value via a spare 4-20 ma analog output channel. PQMII energy registers information: 02FO (hex) 3 Phase Real Power {high} 02Fl (hex} 3 Phase Real Power (low} 0 .01 xkW F4 Signed Long Integer -Numerical Data FFFFFFFF Programming requirement of each energy usage totalization: • Current Reading • Energy Usage Communication Alarm • Energy Usage Totalization-Today • Energy Usage Totalization--Yesterday • Energy Usage Totalization-Since Last Reset • Energy Usage Totalization Reset • Energy Usage Totalization Last Reset Date and Time 10. Provide a credit for Pay Item 102 of the contract "Concrete Crack Repair" for the sum of $2,250.00. This work was not required 11. Provide a credit for the materials and labor for the ''Geomat" not installed associated with Pay Item 210 of the contract "Levy Reconstruction". All General Specifications of the original contract shall apply. I have reviewed the construction documents with the Contractor and the proposed Time and Material estimates provided by the Contractor. The estimated costs appear reasonable for the proposed work. The work has also been coordinated with plant staff as well as our design team. An additional 60 days of contract time is recomm~Jlfor _Ji~ ~~nt. Reviewed By:~-Date:s;:,~ 4 Michael F. (j · PE ~ / BY: Date: ~ ,,_,, ~ " .1 •' I. Provide additional sidewalk access from the surge 1aDk to the MCC building. This will improve access for the operators between equipmenr. ·eooaae 2yn1s @ $85.00/yrd-SI 10.00 Excavate. Form. Pour. & Relocate Grounding Rod-$530.00 . Total: $700.00 2. Provide flanges and a spool piece for the inlioe magnetic flow meta' to enhance maintenance and allow for placement of a spool piece. This will allow the pump station to remain in the service when the meta' is removed for maintenance. 36" E BNG kit & 36" E Ring Flange (2)-$2,450.00 · Spool Piece-$2.500.00 Welder -$400.00 Welding Inspection -$50.00 Total: $5,400.00 3. Provide pressure indicators and test tree at one PIT and three PSHs. This will provide operators a visual indication oftbe pressure readings to help verify proper operation of the insttumentation. 4 Gauges -$936.00 Crosses -$56.96 Ball Valves -$373.56 Labor-$612.36 Total: $2,000.00 4. Clean and coat interior of the existing pwnp can that was reused as the stilling well. When the pump was removed, a large amount of scaling was observed in the can that was being reused for the stilling well. To prevent sloughing of the scale into the reclaimed water, cleaning oftbe stilling pipe is needed Material -$1,000.00 Labor-Sl.996.00 Total: $2,996.00 5. Provide 1" SS adapter plate for sluice to address conflict with corbel The plate is needed to allow offsetting of the gate over the existing wall opening. Mldcrial-$7,949.00 Labor-$851.00 Total: 8,800.00 6. Provide approximately 36 ft2 of additional grating over the valve gallery and relocate band rail.; The additional grating will improve operator accessibility to the chJorine booster building from the pump station area. Material-Sl,300.00 Labor -$500.00 Total: $1,800.00 7. Remove and replace approximately 200 LF of deta'iorated caiking in the joints of the existing Final Effluent Pump Station structure. The existing calking has deteriorated and will over time affect the integrity of the existing structures. Material -$700.00 Labor -$300.00 Total: Sl,000.00 8 . Provide SS slinp, SS eye bolts and necessay appurtenances to p-ovide a means to safely lift the 96" sluice gates using a lift truck if the~ operators fail during high flow conditions. Since these slinp were not available previously, one gate was damaged during a recent emergency. This modification is needed to prevent damaging of the gates during future emergencies. The Contractor sball provide a letter from the sluice gate manufactmer approving the sling and mounts. Material -$3,354.00 Labor-$550 ,00 Total: $3,904.00 '; .. ... f' .,~ .. ' ./ 9. Provide additional PLC )X'Ogl'8IDIIUl1g and modifications to allow for I) operator log-ins, 2) pramre controls for the cblorinc boostr:r, and 3) mooitoring power consumption using the existing PQMIIs. The following is the required configuration for monitoriilg the power comumption: a. The goal of this item is to c:uable the pll!nt's DCs to monitor the Reclaimed Water Pump Station energy usage. There are a total of two existing Multilin PQMil at the Reclaimed Water Pump Sbdion. b. The Reclaimed Water Pump Station energy usage monitor shall include the following: There are two existing PQMils and associated CT's and PT's. A MultiNet is installed at the Reclaimed Water Pump Station switchboard (SWBDI). For the remaind~ of the document the following abbreviations will be used: • RCPS _PQM_A -Reclaimed Water Pump Station SWBD1 PQMil A • RCPS_PQM_B-Reclaimed Water Pmnp Station SWBDI PQMII B Provide the following cable run and equipment: • Run a CAT.6 Ethernet cable between the PLC cabinet and SWBDI and connect the Multilin MultiNet serial-to-Ethernet converter. Use the existing 2" spare conduit between the two that was installed unda' the Reclaimed Pump Station Project. • Utilizie two existing TSP spare analog cables between the PLC REP and RTIJ 27 (Old Chem Bldg) Minimum equipment configuration steps are listed below: • Program I.P. address into the MultiNet, obtain I.P. addresses assignment from the CllY per plant SCADA sysrem I.P . standard • Program MODBUS serial addresses to the PQMils • Program the AB SLC Prosoft MODBUS TCP/IP module to poll the PQM energy usage register every five seconds. Energy registers information are listed at the end of this document In the AB SLC convert the energy usage register raw value to an engineering unit in floating point or real number format and display the three energy u.,age values RCPS_PQM_A_KW, and RCPS_PQM_B_KW at the PLC-REP's OIT. Totalizc the energy usage in a similar fashion as the discharge flow reading detaifofthe energy usage totalization is listed at the end of this document The engineering scale for the energy usage shall be adjustable by operators via the OIT and initially set at 0-1200 KW for the reclaim pump station. Sum RCPS_PQM_A_KW and RCPS_PQM_B_KW to RCPS_PQM_TOTAL and transmit the energy usage value via a spare 4-20 ma analog output cbanocL PQMII energy registers information: 02FO (hex) 3 Phase Real Power (high) 02Fl (hex) 3 Phase Real Power (low) 0.01 xkW F4 Signed Long Integer-Numerical Data FFFFFFFF Programming requirement of each energy usage totaliz.ation: • Current Reading • Energy Usage Cormmmication Alarm • F.nergy Usage Total~Today • Energy Usage Total~Ycsterday • Energy Usage Totalizatioo....ince Last Reset • Energy Usage Totalization Reset • Energy Usage Totali7lltion Last Reset Date and Time Sub CWHECO} Sl.333.33/Day -$2.000.00 Total: $2.000.00 IO . Provide a credit for Pay Ia=m 102 of the contract "Conaete Crack Repair" for the sum of $2,250.00. This work was not n,quired. 11. Provide a a'edit for the SUIJl of S 1,500.00 for the "GeQJDat'" not installed associated with Pay Item 210 of the comract "Levy Reconatructioa'". Pricing is Sl.00/Sq. ft for 1,500 ft. LUMP SUM TOTAL: ~,R.08