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Home My WebLink About2015-044WORK ORDER NUMBER 1 Wastewater Model Update 2015 This Work Order Number 4 is entered into as of this 2(Pday of Chi t;v'I , 2011cpursuant to that certain Continuing Contract Agreement for Professional Services, dated November 15, 2011, and that certain Extension and Amendment of Continuing Contract Agreement for Professional Services entered into as of this 4th day of November, 2014 (collectively referred to as the "Agreement"), by and between INDIAN RIVER COUNTY, a political subdivision of the State of Florida ("COUNTY") and Atkins North America, Inc. ("Consultant"). The COUNTY has selected the Consultant to perform the professional services set forth on Exhibit A (Scope of Work), attached to this Work Order and made part hereof by this reference. The professional services will be performed by the Consultant for the fee schedule set forth in Exhibit B (Fee Schedule), attached to this Work Order and made a part hereof by this reference. The Consultant will perform the professional services within the timeframe more particularly set forth in Exhibit C (Time Schedule), attached to this Work Order and made a part hereof by this reference all in accordance with the terms and provisions set forth in the Agreement. Pursuant to paragraph 1.4 of the Agreement, nothing contained in any Work Order shall conflict with the terms of the Agreement and the terms of the Agreement shall be deemed to be Incorporated in each individual Work Order as if fully set forth herein. IN WITNESS WHEREOF, the parties hereto have executed thls Work Order as of the date first written above. CONSULTANT: Atkins North America, Inc. By: Title: Z stn; TALO 9e i1'�dN BOARD OF COUNTY COMMISSIONERS OF IND AN RIVER COUNTY Wesley BCC Approved Date: Attest: Jeffrey R. S By: . Davis, Chairman Iler Approved: Approved as to form and legal sufficiency: oseph Baird, County Adminis ator Dylan T. Reingold, County Attorney - -ll'';'ss/o: CONTINUING CONTRACT AGREEMENT WORK ORDER No. 1 SCOPE OF WORK Indian River County Utility Services Wastewater Hydraulic Model Update SCOPE OF WORK (SOW) Indian River County Utility Services (IRCUS) requires Atkins (Consultant) support for a wastewater transmission system hydraulic model update. The previous update to the wastewater transmission system hydraulic model occurred in 2004. Since then, new development has occurred in the service area requiring additional wastewater infrastructure. IRCUS requires an updated wastewater transmission system hydraulic model that reflects the existing transmission system. The scope is comprised of the following tasks: • Task 1 — Wastewater Transmission System Model Update • Task 2 — Wastewater Transmission System Model Calibration TASK 1 — WASTEWATER MODEL UPDATE 1.1 Update Wastewater Infrastructure Obtain, analyze, and incorporate the current development and current flows in the service area. Consultant will utilize existing GIS and record drawing data, as provided by the IRCUS. The hydraulic analysis will include recommended improvements where necessary to the impacted wastewater conveyance system. Task 1.2 Update Current Operational Procedures Update current operational procedures and settings for all lift stations in the wastewater service area (i.e. level settings, pump curves, wet well capacity, etc.). The model will be updated to best simulate field conditions, based on available data provided by IRCUS. Task 1.3 Flow Allocations Consultant will develop a return to sewer rate based on metered water demands compared to wastewater flow data. The calculated percentage will be applied to the metered water demand data allocated in the wastewater hydraulic model. The model will be set up to operate in an extended period simulation (EPS), based on run time, pressure and flow data as provided by IRCUS. A diurnal curve will be developed with peaking factors based on recent historical flow data (water meter data, WW pump station run times and flow meters). Individual pump station diurnals are not anticipated. Projected flow and scenarios will not be included under this SOW. 1 TASK 2 — WASTEWATER MODEL CALIBRATION/ANALYSIS The wastewater hydraulic model shall be calibrated to observed actual conditions utilizing data derived from IRCUS's SCADA system. The model shall be calibrated within 10 percent of actual system wide wastewater flows based on an overall flow to each lift station service area. The calibration will include adjustments to diurnal patterns based on an average and maximum week condition. These periods shall_be selected based on an analysis of historical flow meter data to determine the best applicable periods, as agreed to by the Consultant and IRCUS. Additional reference data may include wastewater pump station pressures and run times, where available. Required SCADA data shall include: • Overall wastewater flow data, including flow meter data for the past three years (WWTP/master meter flow). • Hourly wastewater flow data for a week recorded during typical average and maximum weeks (i.e. pump run times). • Pump station run times/periods — Operational Togs of all pump stations, which indicates on/off condition for each pump station over a minimum period of 1 week. • Wastewater system pressure data points, where available. Once the model has been calibrated, it can be utilized to analyze existing capacity constraints in order to identify current and potential deficiencies within the wastewater transmission system. Working with IRCUS staff, Consultant will confirm trigger criteria for pump stations and force mains to determine available capacity; perform existing system analyses under peak flow conditions; and identify existing system deficiencies based on IRCUS design criteria. TASK 3 — TECHNICAL MEMORANDUM Technical Memorandum will be presented summarizing the model updates, current wastewater flows, calibration data and recommendations for the existing condition scenarios. TASK 4 — MEETINGS Three (3) meetings have been budgeted for under this SOW. ASSUMPTIONS Certain assumptions have been made in preparing this SOW. To the extent possible, they are stated herein, and are reflected in the budget for services. If the work required is different than that stated herein, the resultant changes in scope of work will serve as a basis for additional assignment as agreed to by both IRCUS and Consultant. The assumptions are as follows: • Equipment/pipeline updates will be provided by IRCUS in a geodatabase that can be imported into WaterCAD. 2 • Existing flows required for the model update will be provided by the IRCUS. This may include historical water meter data with a return to sewer rate to estimate flows. • The water meter data is spatially located in GIS and can be allocated to nearest node. • IRCUS will provide the updated plans for the facilities if changes have been made since the last model was created and are not included in the geodatabase. • Hydraulic model includes force mains only (no gravity sewer piping). • Calibration shall be based on selected week's data, as agreed with by the IRCUS. • IRCUS shall provide field data where required. Limited coordination efforts are included in this scope for field coordination. DELIVERABLES Atkins shall provide the following: • Updated calibrated hydraulic model for the wastewater conveyance system in WaterCAD software. Technical Memorandum summarizing the model updates, current wastewater flows, calibration data and recommendations for the existing condition scenarios. SCHEDULE It is assumed that all the requested information in this scope will be provided to the consultant in a timely manner and that this effort will be completed within six (6) months from date of execution of this agreement. COMPENSATION The compensation budget is $53,793.83 as presented in Attachment 1. Attachment 1 Atkins LS Labor Page 1 of 1 21512015 E10 Ell E12 814 E15 E16 E17and Above Total Hours Total@ 1 Billing Rate $ 82.63 $ 89.40 $ 118.91 $ 132.75 $ 164.03 $ 203.79 $ 227.22 Hours Hours Hours Hours Hours Hours Hours Task.1 ;Wastewater Model Update 68 0 104 0 8 0 : 0 '.180 :$ ' 19,297.72' Update WW Infrastructure 20 32 1 Update Current Operational Procedures 24 32 8 Existing Flow Analysis and Flow Allocation 24 40 Task 2. Wastewater Model Calibration 45 0 . 100 0 00 .. . 0 145 .$ 15,809:35 Calibrate Model with SCADA information 45 100 Task 3 - Technical ,Memorandum 30 .0 .. 38 . 0 .12 ' 12 0 :. • 92 $ ' 11,411.32 Draft Technical Memorandum/Analysis of Modeling Results 20 32 8 8 Final Technical Memorandum 10 6 4 4 Task 4 -.Meetings - 0 0 16 . 0 .8 16 0 40 $' 8,475.44 Three Meetings 16 8 16 Total Hours: 143 0 258 0 28 28 0 457 I , Total Labor Amount . $ 52,793.83 Total'Expenses $' , : ' -1,000.00 Grand Total Fixed Fee $ '53,793.83 Atkins LS Labor Page 1 of 1 21512015