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HomeMy WebLinkAboutC2019-480 - 8/21/2019 - NA TASK ORDER NO.48 This Task Order pertains to a Master Services Agreement for Professional Services by and between City of Corpus Christi, Texas (City) and LNV, Inc. (Consultant) dated August 16. 2016 (Agreement). Consultant shall perform services on the project described below as provided in this Task Order and in the Agreement. This Task Order shall not be binding until it has been properly signed by both parties. Upon execution, this Task Order shall supplement the Agreement as It pertains to the project described below. PROJECT NAME/NUMBER:Water and Wastewater Treatment On-Call Support. E16264 1. PROJECT DESCRIPTION—This project provides the Utility Department with on-call services to assist with any technical,operational,maintenance,diagnostic and design concerns for the City's O.N.Stevens Water Treatment Plant and six wastewater treatment plants. 2. SCOPE OF SERVICES—Lakes LS Model and Capacity Assessment, more fully described in Exhibit A. 3. COMPENSATION—The total amount not to exceed for Task Order No.48 only is$4,840.00. This Task Order is approved,and Consultant may proceed. All other terms and conditions of the Agreement remain In full force and effect. CITY OF CORPUS 1 LNV,INC. Jeff H. dmonds, P.E. ate Pot-De Leyendecker, P.E. ate Director of Engineering Services President 801 Navigation, Suite 300 Corpus Christi, TX 78408 (361)883-1984 Office loganb©Invinc.com Fund Name Accounting Unit Account No. Activity No. Amount Wastewater Operating Fund 4200-33000-042 530000 E16264-01.4200-EXP $4,640.00 Task Order No.46 Page 1 of 1 SCANNED City Project No. E16264 Professional Services Contract City of Corpus Christi Water/Wastewater Treatment On-Call Support Task Authorization No. 48 — Lakes Lift Station Model and Capacity Assessment August 16, 2019 LNV EXHIBIT A Page 1 of 5 ,os CH • O R LNV .g J4 'eSB SCOPE OF WORK Project No. E16264 Water and Wastewater Treatment On-Call Support Task Authorization No. 48—Lakes Lift Station Model and Capacity Assessment PURPOSE In response to the City's request, LNV is proposing the following scope of services for the hydraulic analysis of Option 1 outlined in the Conceptual Wastewater Plans for the John Tamez 271 Acre Tract prepared by LJA Engineering Inc. Option 1 involves a new Tamez Lift Station(LS)conveying additional flow to the Lakes LS.The updated 2015 City of Corpus Christi Water Model will be used in the analysis. The purpose of this task authorization is to provide assistance to City Staff by performing a hydraulic analysis of the system under dry weather and design storm conditions.Results of TA-48 will aid City Staff in understanding the impacts on their Wastewater Collection and Treatment System (WCTS) from new development. Performing this hydraulic analysis will require completing the following general work tasks outlined in Table 1.which are further detailed in the Scope of Work. Table 1:Required Work Tasks Task Description Task 1 Hydraulic Model Setup Task 2 Modeling Proposed Flow Increase Task 3 Results and Deliverables SCOPE OF WORK The Engineer will perform the following: Task 1 -Hydraulic Model Setup This task will encompass all aspects of preparing the model for new simulated scenarios. Subtask 1.1 Scenario Setup LNV will setup and run the Extended Period Simulation (EPS) model using scenarios for both dry weather and 5-year 24-hour design storm conditions with 2015 infrastructure information. Subtask 1.2 Development of Flow Patterns The use of an EPS model requires a flow curve in order to model flows throughout time. LNV currently does not have a flow curve for the proposed Tamez LS. To perform the hydraulic analysis appropriate flow patterns for both wastewater and Infiltration/Inflow (i/i) entering the WCTS from the proposed development must be developed. 1 EXHIBIT A Page 2 of 5 • PpUS CN O q v i CNV D Ifl5] Subtask 1.3 Building New Modeled Components Modeling the proposed development will require building the new components of the WCTS. These additions include: a new lift station, 8" force main, 36" manhole, 72" manhole and all gravity lines connecting proposed infrastructure to existing WCTS. Task 2 -Modeling Proposed Flow Increase The objective of modeling the proposed flow increase is to identify any modeled capacity problems in the WCTS. LNV will model and analyze the effects from tying into the manhole (MH GIS Asset Code: WWMNHL428323354)upstream of Lakes LS as described in Option 1.The estimated design peak 2-hour and average daily flows for the Tamez LS are 700 gpm and 195 gpm respectively. Task 3 -Results and Deliverables The goal of this task is to provide the City of Corpus Christi with the modeled effects in their WCTS due to the development outlined in Option 1.The deliverables will include a typed technical memo and exhibits of the modeled results for the vicinity of the Lakes LS. These deliverables will be sent to the City upon completion. SCHEDULE The Engineer's services shall be performed in a timely manner consistent with sound professional practices. The Engineer will complete the work according to the following schedule: Week Task Description Mon. Tue. Wed. Thu. Fri. 1 Hydraulic Model Setup 1.1 Scenario Setup 1.2 Development of Flow Patterns 1.3 Building New Modeled Components MiliMMMM 2 Modeling Proposed Flow Increase 3 Results and Deliverables The time limits set forth in the schedule shall include allowances for reasonable and expected review time by the City and approval by authorities having jurisdiction over this project and shall not be allowed as cause for delay or adjustments to the schedule. Delays caused by review times by the City exceeding those anticipated by the Engineer's schedule are cause for adjustments in the schedule. Any adjustments made to the agreed upon schedule shall be made in writing and accepted by both parties. The Engineer shall begin work immediately upon receipt of the executed Task Authorization and/or Notice to Proceed(written or emailed). 2 EXHIBIT A Page 3 of 5 . • QV,.S LNVr. FEE The services will be provided on a Time and Materials (T&M) basis as the project is moved towards completion.The anticipated amount for the base task authorization is$4,640 as shown in ATTACHMENT A. The Engineer shall not incur any cost in excess of this not-to-exceed amount without prior written authorization from the City's Task Authorization Manager. TASK AUTHORIZATION MANAGER The Task Authorization Manager will be the primary contact person during the performance of this work. All correspondence or inquiries should be addressed to the Task Authorization Manager. This work task will be coordinated by: Pablo Martinez,P.E.C.P.M Project Manager City of Corpus Christi Engineering Services Office: 361-826-1929 Email: PabloMl@cctexas.com 3 EXHIBIT A Page 4 of 5 Attachment A Task Authorization No. 48 Man-hour and Fee Analysis L V MANHOUR AND FEE ANALYSIS enginoers architects i contractors CLIENT: CITY OF CORPUS CHRISTI,TEXAS PROJECT: LAKES LIFT STATION MODEL AND CAPACITY ASSESSMENT August 16,2019 DESCRIPTION PROJECT MGR EIT CLERICAL NON LABOR TASK RATE $200.00 $120.00 $68.00 Hrs. Total Hrs. Total Hrs. Total Expense Total TASK 1: Hydraulic Model Setup 1.1 Scenario Setup 1 $ 200 1 $ 120 0 $ - $ - $ 320.00 1.2 Development of Flow Patterns I $ 200 4 $ 480 0 $ - $ - $ 680.00 1.3 Builing New Modeled Components 0 $ - 8 $ 960 0 $ - $ - $ 960.00 TOTAL TASK 1 $ 1,960.00 TASK 2: Modeling Proposed Flow Increase 2.1 Modeling Proposed Flow Increase 0 $ - 3 $ 360 0 $ - $ - $ 360.00 TOTAL TASK 2 $360.00 TASK 3: Results and Deliverables 3.1 Results and Deliverables _ 2 $ 400 16 $ 1,920 0 $ - $ - $ 2,320.00 TOTAL TASK 3 $2,320.00 4 32 0 36 TOTAL COST $4,640.00 � m m _ N W O � N a