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Home My WebLink AboutContract 43923-A6 CSC No. 43923-A6 AMENDMENT No. 6 TO CITY SECRETARY CONTRACT No. 43923 WHEREAS, the City of Fort Worth (CITY) and Parsons Water & Infrastructure, (ENGINEER) made and entered into City Secretary Contract No. 43923, (the CONTRACT) which was authorized by M&C C-25877 on the 25th day of September, 2012 in the amount of $ 391,453.00 ; and WHEREAS, the CONTRACT was subsequently revised by: Amendment No. 1 in the amount of $206,797.00 authorized by M&C C-26229 on 7th day of May, 2013, Amendment No. 2 in the amount of $43,929.00 which was administratively authorized on lst day of May, 2015, Amendment No. 3 in the amount of $52,133.00 which was administratively authorized on the 25th day of March, 2019, Amendment No. 4 in the amount of $145,919. 00 which was authorized by M&C 19-0379 on the loth day of December, 2019 and Amendment No. 5 in the amount of $209, 281.00 which was authorized by M&C 21-0920 on the 30th day of November, 2021; and WHEREAS, the CONTRACT. involves engineering services for the following project: Little Fossil Creek Interceptor .Improvements at Various .Locations within the Little Fossil Creek Drainage Basin; and WHEREAS, it has become necessary to execute Amendment No. 6 to the CONTRACT to include an increased scope of work and revised fee. NOW THEREFORE, CITY and ENGINEER, acting herein by and through their duly authorized representatives, enter into the following agreement, which amends the CONTRACT: 1 . Article I of the CONTRACT is amended to include the additional engineering services specified in proposal attached hereto and incorporated herein. The cost to City for the additional design services to be performed by Engineer totals $35,190, 00. 2. Article II of the CONTRACT is amended to provide for an increase in the fee to be paid to Engineer for all work and services performed under the Contract, as amended, so that the total fee paid by the City for all work and services shall be an amount of $1,084, 702. 00. 3. All other provisions of the Contract, which are not expressly amended herein, shall remain in full force and effect. OFFICIAL RECORD City of Fort Worth, Texas CITY SECRETARY eel, .n��",�ptor Prof Services Agreement Amendment Template CITY 1960 Revision Date: November 23, 2021 Page 1 of 3 FT. WORTH, TX EXECUTED and EFFECTIVE as of the date subscribed by the City' s designated Assistant City Manager. APPROVED: ENGINEER City of Fort Worth Parsons Water & Infrastructure �q �Ul Dana Burghdoff(A 30,202 1 :27 CDT) 111 Dana Burghdoff Sean Ten3 zleiyZ-f.E. Assistant City Manager Vice Pr s ' ent DATE: Aug 30, 2022 DATE: August 24, 2022 APPROVAL RECOMMENDED: Christawher ffArden H ler(Aug 30,2022 06:33 CDT) Christopher Harder, P. E. Director, Water Department Contract Compliance Manager: By signing, I acknowledge that I am the person responsible for the monitoring and administration of this contract, including ensuring all performance and reporting requirements. Walter Norwood, P.E. Project Manager APPQROOIV,E�D, AS TO FORM AND LEGALITY: M&C: N/A V� I Date: _ N/A DRlack(Aug 30,202217:37 CDT) Douglas W. Black Sr. Assistant City Attorney ATTEST: on), as d p��0000 0 0 0 0 0 000 Y� ,TrannO to S. Goo qH _ � 0 o Jannette S.Goodall(Sep 7,20221 DT) ~g $�1 d ,00 0 Jannette Goodall 0 0o d City Secretary d�� O00 o 00 a� ��nEXASo�p OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX City of Fort Worth, Texas Little PossiT 7reeK Interceptor Prof Services Agreement Amendment Template CPN 1960 Revision Date: November 23, 2021 Page 2 of 3 ePARSONS 1301 West President George Bush Highway,Suite 350 1 Richardson,TX 75080 ,, p:+1972.244.6000 1 f:+1972.244.6077 1 www.parsons.com June 30,2022 Walter Norwood, P.E. Senior Professional Engineer City of Fort Worth - Water Department 200 Texas Street Fort Worth,Texas 76102 Subject: Revised request for Amendment 6 for Additional Level of Effort (LOE) for Little Fossil Creek Interceptor Rehabilitation Project - Part 2A Locations 1, 3, and 5A - Metering Station Improvements for Location 3 Dear Walter, This letter represents a request from Parsons Water& Infrastructure Group, Inc. (Parsons)to the City of Fort Worth Water Department for Amendment 6 for the increased level of effort(LOE)to update the design and bid packages for the above-referenced project. This amendment looks to replace a wastewater metering station found in Location 3,just east of North Beach Street in Haltom City. Background The project is well documented in previous letters and proposals by Parsons over the 9 years since project inception, most recently in Amendment 5 documents processed in November 2021. Parsons is currently in the latter stages of Amendment 5, focused on finalizing the construction drawings and specifications for the remaining items of the Little Fossil Creek interceptor, namely designs for Location 1, Location 3, and Location 5B. Location 3 includes an existing metering station featuring an underground vault, manholes immediately upstream and downstream of the vault, and associated piping. The piping is 24 inches in diameter and configured in an inverse siphon profile intended to provide full pipe condition in the pipeline inside the vault from which an ultrasonic doppler type flow meter can accurately measure flow of the sewage passing through the pipe. The metering system is not functional, for unknown reasons possibly related to both failure of meter and/or the hydraulic conditions within the pipe. The City of Fort Worth Water Department(City)desires to replace the existing system with a new system,fully capable of measuring the range of flows, and configured in accordance with the latest City standards, including the use of solar power to operate the system. Parsons has already performed a design of a solar-powered metering station as part of improvements to Location 1. These drawings necessary to adequately depict the construction of the Location 1 metering station include civil, mechanical, structural, and electrical disciplines, and have been presented to the City for review previously. Approximately 20 sheets depict the design. As well, a drawing of the plan and profile of the pipeline at Location 3 was generated previously. I i i DELIVERING A BETTER WORLD i I Walter Norwood, P.E. City of Fort Worth -Water Department June 30,2022 Project Approach The configuration and concepts of the metering station for Location 1 will be applied to the new metering station of Location 3, with the appropriate design modifications to reflect the different geometry of Location 3 as well as the different flow values and pipeline diameters. The new design at Location 3 will include upstream and downstream manholes, a new metering vault 8 feet by 10 feet and approximately 22 feet deep, the solar generation system, and meters, instrumentation,and associated lighting and electric gear necessaryforthe complete meteringsystem identical to Location 1. The metering vault will have two metering systems, one a flanged mag meter placed in the pipeline and the other a transit time doppler meter attached to the exterior of the pipe. The design will include new piping between the upstream and downstream manholes, including an appropriately sized bypass pipeline. The metering site is located well within the floodway of Little Fossil Creek according to the latest Flood Insurance Rate Map from the United States Federal Emergency Management Agency. The stated flood elevation is 560 feet. This is approximately the elevation of the top of the existing concrete metering vault. The top of the proposed metering vault is 562, providing 2 feet of freeboard over the current 100-yearflood elevation. To access the top of the vault and to mountthe related electrical equipment, an elevated steel structure and stairway, rising approximately 4 feet above the existing grade, is proposed,just as Location 1's metering vault. The design will include a separate pole to mount the solar panels and data transmitter equipment. Because of the difference in depths and potential soil characteristics between Location 1 (35 feet deep) and Location 3 (20 feet deep), a complete structural analysis is required. Two Parsons engineers will visit the site to inspect the current condition of the site to investigate the hydraulics found to ascertain any design failures that led to the systems ineffectiveness. Our subcontractor, Gorrondona & Associates, will perform a swift topographical survey to confirm the existing elevations of necessary elements and appropriately survey any changes to the site. The main work product for this task is the generation of additional or modified drawings from the existing drawing set for Location 1. Optimizing the duplication of features for structural and electrical elements,as well as combining some drawings where generous open space is available,two additional drawings are required. Additional sections and details required for Location 3 are added to the existing sheets for Location 1. Attachment 1 lists the affected and new drawings for this amendment. Budget and Schedule The Level of Effort Estimate for this task(Attachment 2)spreadsheet details the level of effort required to complete the design and incorporate it into the existing design package currently under development. 1 PARSONS 2 Walter Norwood,P.E. City of Fort Worth -Water Department June 30,2022 The level of effort includes the following sub-tasks: • Site visit by two Parsons engineers to investigate existing system and surroundings • Civil/mechanical engineering to design the new vault hydraulics, selection of appropriate equipment for the new flow rates • Electrical engineering to review the existing design and apply it to the new location • Structural engineering to design the new vaults and structures, including review of existing soil investigations • Drawing production, including engineering direction and mark-ups to produce the new and adjusted drawings. The following table provides a summary of the contract amounts to date: Original LOE $391,453 Amendment No. 1 (for—5000 LF of pipe) $206,797 Amendment No. 2 $43,929 Amendment No. 3 $52,133 Amendment No. 4 $145,919 Amendment No. 5 $209,281 Amendment No. 6 $35,190 Total LOE with Amendments 1 through 6 $1,084,702 The original Amendment 5 submittal was due this month. This amendment adds 1 month to the schedule. A revised schedule will be provided immediately upon acceptance of this proposal. With this amendment, the M/WBE participation of the Contract calculates to 23.5%, maintaining our exceedance of the project goal of 22%. Should you have any questions, please don't hesitate to contact me at 713-871-7429. Sincerely, Thomas P. Wilshusen, P.E. Project Manager PARSONS 3 Attachment 1 Revised List of Drawings - - Location Description Comments Sheet 39 LOCATION 3 +_00- - PROFILE Modify to Include new metering station LOCATION (M-292C)METER STATION SITE NAND _ 67 LOCATION_1(M-292C)METER STATION _ _PLAN AND_SECT_IO_N____ 68 LOCATION 1(M-292C)METER STATION JUNCTION BOX 69 LOCATION 1(M-292C)METER STATION JUNCTION BOX STRUCTURAL 70 LOCATION 1(M-292C)METER STATION_ METER CHAMBER UPPER AND LOWER PLAN Combine from previous sheet 71 71 _LOCATION 3(M-292C)METER STATION SITE PLAN _ __ _ _ ___ _ Entirely new 72 LOCATION 3(M 292C)METER STATION _ PLAN AND SECTION _ Entirel new Y_ ——-- -� 73 LOCATION 3(M 292C)METER STATION METER CHAMBER UPPER AND LOWER PLAN Mostly coped from Loc 1;reflect new pipe __ ___ __ diameters 74 LOCATIONS1AND 3(M-292_ C)METER STATION__- METER_CHAM_BERRU STCTURAL PLANS Add indications for_L_o_c_a_t_io_n 3 75 LOCATION 1(M 292C)METER STATION _ METER CHAMBER STRUCTURAL SECTIONS -- - - - _76 _LOCATION 1(M-292C)METER STATION , METER CHAMBER STRUCTURAL DETAILS Add a detail for Location-3 if necessary 77 LOCATION 3(M-292C)METER STATION METER CHAMBER STRUCTURAL SECTIONS Location 3 more shallow,reinforcement ___ __ _ _ different 78 LOCATIONS 1 AND 3(M-292C)METER STATION METER CHAMBER PLATFORM AND STAIRS Add extra information for Location 3's shorter _ _ --- - _ platform -- --I 79 LOCATIONS 1 AND 3(M-292C)METER STATION METER CHAMBER STAIRS AND HANDRAIL_DETAILS __ J 80 LOCATIONS 1 AND 3(M-292C)METER STATION METER CHAMBER STAIR CONNECTION DETAILS Add for Location 3 as necessary 81 LOCATIONS 1 AND 3(M-292C)METER STATION INSTRUMENTATION LEGEND&SYMBOLS Minor edits _ 82 LOCATIONS 1 AND 3(M-292C)METER STATION ELECTRICAL GENERAL NOTES Minor edits 83 LOCATIONS 1 AND 3(M-292C)METER STATION ELECTRICAL RISER DIAGRAM Minor edits if Location 3 needs different identification of instruments 84 LOCATIONS 1 AND 3(M 292C)METER STATION PIPING AND INSTRUMENTATION DIAGRAM Minor edits if Location 3 needs different identification of Instruments 85 -LOCATIONS 1AND 3(M 292C)METER STATION _ _ ELECTRICAL PLAIN __ Minor edits to include Location 3 86 LOCATIONS 1 AND 3(M-292C)METER STATION ELECTRICAL SECTIONS Minor edits to include Location 3 87 LOCATIONS 1 AND 3(M-292C)METER STATION __ ELECTRICAL TRAFFIC ENCLOSURE _ _Space for Location 3 if necessary 88 LOCATIONS 1 AND 3(M-292C)METER STATION ELECTRICAL STANDARD DETAILS 1 Shared with Location 3 89 LOCATIONS_1 AND 3(M-292C)METER STATION ELECTRICAL STANDARD DETAILS 2 Shared with Location 3 Attachment 2 Level of Effort Estimate for Fee Calculation Labor(hours) Expense Total TasklJo. Task Description Technical Project Project CARD/GIS Project Total Labor Subconsultant Fxpe nse Task Sub Total Advisor Manager Engineer Controls Cost Cost Rate $250.00 $220.00 $160.00 $134.00 $120.00 MWBE Non-MWBE 5.0 Haltom City Metering Station Design(Location 3) 10 28 102 62 0 $33,540 $1,500 0 $1,500 $35,040 5.1 Site Visit 6 6 $2,334 $1,500 5.2 CMI Engineering 4 16 $3,476 5.3 Electrical Engineering 2 2 24 $4,798 5.4 Structural Engineering 4 8 0 $9,232 5.4 Final Draft(10D%)Plans(2 new,19 reused dwgs) 4 8 16 62 $13,700 Totals 10 28 102 62 0 $33,640 $1,600 $0 $1,500 $35,040 Total Hours 2D2 Total Labor $33,540 Total Expense $1,500 MWBE Subconsultant $1,500 Non-MWBE Subconsultant $0 10%Sub Markup $150 MWBE Participation 4.3% Total Project Cost $35,190