Okaloosa County BOCC — January 8, 2013 — Task Order 70 to Constantine Engineering — reading text

TASK ORDER 70— OKALOOSA COUNTY WATER AND SEWER DEPARTMENT PROFESSIONAL ENGINEERING SERVICES FOR THE EAST COUNTY REPUMP STATION PROJECT TASK ORDER 70 THIS TASK ORDER IS ISSUED PURSUANT TO THE AGREEMENT FOR CONSULTING SERVICES DATED JANUARY 18, 2005, BETWEEN THE COUNTY OF OKALOOSA COUNTY, FLORIDA AND CONSTANTINE ENGINEERING, INC., WHICH IS INCORPORATED HEREIN BY THIS REFERENCE, WITH RESPECT TO Scope of Basic Services to Provide Professional Engineering Services for the Design and Construction of the East County Repump Station Project Article A. Purpose: The purpose of this Task Order is to authorize and direct CONSULTANT (Constantine Engineering, Inc.) to proceed with professional engineering design, bid phase services and services during construction (SDC) for the East County Repump Project (PROJECT) for the Okaloosa County Water and Sewer Department (COUNTY). A new repumping facility is needed to convey all wastewater flows from the East County service area to the Eglin Main pump station being constructed on Eglin Air Force Base (AFB) Main Base. (WWTFs) away from these facilities to the COUNTY’s Arbennie Pritchett Water Reclamation Facility (APWRF). The specific activities that are included in the PROJECT are described in “Article B. Scope of Services.” Article B. Scope of Services: The Scope of Services authorized in this Task Order include, but are not limited to the CONSULTANT providing professional engineering and technical services for the East County Repump Project, including review of hydraulic and surge modeling of a new 6.5 mile force main being designed by others; engineering design services to prepare contract documents for construction by the COUNTY, equipment procurement and bid assistance, services during construction (SDC), and resident observation (RO) services. The engineering and technical services that may be authorized in this task order by the COUNTY’s Representative include, but are not limited to, the following: Evaluation Services Engineering Design Services Permitting Assistance Geotechnical Engineering Services Coordination with other Utilities and Agencies Bid Phase Services Services During Construction NAT WN Specific Work Tasks that may be authorized by the COUNTY’s representative are presented below. Work Task 1. Evaluation Services The specific engineering and technical services that CONSULTANT agrees to furnish to the COUNTY for the preparation of the Evaluation Services for the PROJECT are described below. 1.1 Meetings CONSULTANT shall attend meetings as may be reasonably necessary, and as requested by the COUNTY, and provide general engineering assistance, consultation, and opinions regarding the PROJECT. TASK ORDER 70— OKALOOSA COUNTY WATER AND SEWER DEPARTMENT PROFESSIONAL ENGINEERING SERVICES FOR THE EAST COUNTY REPUMP STATION PROJECT Specific Work Tasks that may be authorized by the COUNTY ’s representative are presented below. 1.2 Hydraulic and Surge Analysis Work Task The CONSULTANT shall perform the following tasks: 1.2.1. Consultant shall develop and perform a hydraulic and surge analysis for the East County Repump Station and conveyance force main. The analysis shall be based on a peak flow of 3,000 gallon per minute (gpm) triplex centrifugal sanitary sewer pumping station and approximately 9.5 miles of 14 and 16-inch diameter polyvinyl chloride (PVC) sewer forcemain to convey wastewater flows currently received at the NVOC Regional WTP to Eglin Main Base PS. 1.2.2 The model will utilize existing and proposed profile drawing and surveys to determine pipe size, lengths and gradient to create overall model. The model will include terminations and connections required to convey the wastewater flows to the Eglin Main PS. 1.2.3. Scenarios will be run to determine expected operational pressures and surges for the new Repump Station and conveyance force mains. Information will be developed for various flow and operational conditions. Recommendation will be made for pump horsepower (Hp) and total discharge head (TDH), check valve operations, combination air release valve location and other necessary equipment and appurtenances. 1.2.4 Meet with COUNTY and force main design Consultant to discuss results and make recommendations for surge protection devices and pipe material improvements needed. Work Task 2. Engineering Design Services The specific Engineering Design Services that CONSULTANT agrees to furnish to the COUNTY for the PROJECT are described below. 2.1 Meetings CONSULTANT shall attend meetings as may be reasonably necessary, and as requested by the COUNTY, and provide general engineering assistance, consultation, and opinions regarding the PROJECT. 2.2 Design Scope Work Tasks The CONSULTANT shall perform engineering design services necessary to construct the new East County Repump Station. The conceptual, preliminary and final design services will be developed to construct the components of the PROJECT as described below. The specific scope of services that CONSULTANT shall provide in this work task is outlined below: 2.2.1 Conceptual Design (30%) 2.2.11 CONSULTANT will perform conceptual engineering design (30%) for the following construction: e The new 3,000 gpm triplex centrifugal pump station. The new pumps shall be design with non- clog horizontal mounted submersible pumps; discharge piping, isolation valves; redundant influent pressure control sensors, emergency by-pass assembly, new motor controls and power supply with variable frequency drives installed in a new temperature controlled block building. 2.2.1.2 Separate procurement documents will be prepared for the COUNTY to facilitate the purchase of specific equipment. It is understood the COUNTY will be constructing the recommended pump station piping, electrical and building foundation using its own forces, as supplemented by subcontractors directly contracted by the COUNTY. In addition, the COUNTY will contract by solicitation using contract documents developed by the CONSULTANT to construct a pre-engineered block building. 2.2.1.3 Schedule and conduct a 30% design meeting and field review with the COUNTY, including schematic site/civil and mechanical layout plan and anticipated power requirements. TASK ORDER 70— OKALOOSA COUNTY WATER AND SEWER DEPARTMENT PROFESSIONAL ENGINEERING SERVICES FOR THE EAST COUNTY REPUMP STATION PROJECT 2.2.2 2.2.2.1 2.2.3.2 2.2.3.3 2.2.2.4 2.2.2.9 2.2.2.6 2.2.2.7 2.2.3 2.2.3.1 2.2.3.2 2.2.3.3 2.2.3.4 2.2.3.9 2.2.3.6 The intent of this engineering phase is to finalize general constructability preferences in conjunction with the COUNTY’S installation and operation requirements to ensure a final design that is satisfactory to the COUNTY Preliminary Design (60%) CONSULTANT will perform preliminary engineering design and prepare preliminary (60 percent design documents) for the PROJECT. Review and incorporate comments from 30% design review meeting. Evaluate and provide emergency generator sizes and manufactures. Schedule and conduct a 60% design meeting and field review with the COUNTY, including preliminary site/civil and mechanical layout plan, pump curves, building dimensional requirements, auxiliary power and control logic. Prepare construction drawings and specification for a pre-Engineered block building with metal roof to meet current Florida Building Code requirements. Base building will be solicited to outside Licensed Florida Building Contractors with prior experience constructed similar type buildings. Building design will incorporate standard architectural design features to allow the day to day operations of the municipal wastewater pumping station. Establish the temporary and permanent installation and operational concerns, as well as vertical installation constraints Determine locations of air release and vacuum valves, power and dewater discharge (if applicable). Identify and provide special details for pipe connections, pump installation, controls and SCADA configuration based on new electrical building and pump drives. Final Design (90%) CONSULTANT will perform final engineering design and submit final contract documents to the COUNTY based on the design review comments from the preliminary design review meeting. The intent of the final engineering phase is to further refine the design of the project with respect to permeability, constructability, costs, and to and prepare the plans for construction of the PROJECT by the COUNTY. CONSULTANT shall perform the following final engineering services. Review and incorporate comments from 60% design review meeting. Finalize design pump, piping, generator, control and building layout. Complete final procurement bid proposal and alternative selections if applicable. Finalize building features, details and specifications. Provide procurement documents to COUNTY for review, including access doors, ventilation system, lighting, traveling hoist system, and architectural features. Finalize bill of materials for the COUNTY to assist with the purchase of the materials for the PROJECT. Final material list will be incorporated into design documents and verified with COUNTY prior to final order being placed. Submit 100% plans and specifications to COUNTY for final construction and solicitation. 2.3 Value Engineering The CONSULTANT shall perform value engineering design evaluation services to identify in the technical, 2.3.1 operational or constructability improvements or modification to help improve the cost and installation required for the proposed East County Wastewater Conveyance FM being designed by Polyengineering. The specific scope of services that CONSULTANT shall provide in this work task is outlined below: Preliminary Design TASK ORDER 70— OKALOOSA COUNTY WATER AND SEWER DEPARTMENT PROFESSIONAL ENGINEERING SERVICES FOR THE EAST COUNTY REPUMP STATION PROJECT 2.3.1.1 CONSULTANT will perform preliminary review of hydraulic design characteristics and route of approximately 34,300 linear feet of sanitary sewer force main to convey wastewater to the Eglin Main Pump Station. This information will then be submitted to the COUNTY for incorporation in to final plans. The intent of this preliminary review engineering phase is to insure proper horizontal and vertical alignments are utilized; directional bores are properly utilized for crossing wetlands, streams, and other potential conflicts. 2.3.1.2 Review existing ground line and preliminary vertical alignment to include depth of cover required for the project. Evaluate locations of air release and vacuum valves to minimize the effects of hydrogen sulfide gases or wastewater separation within the pipeline. 2.3.1.3 Perform and identify preliminary thrust analysis to determine joint restraint requirements for the PROJECT, including utilization of ductile iron pipe. 2.3.1.4 Prepare preliminary bill of materials for the COUNTY to review to determine final cost and determine if alternative products may be utilized. 2.3.1.5 Prepare erosion, sediment, and pollution control plan. Work Task 3. Permitting Assistance. The specific services that CONSULTANT shall provide include permitting tasks necessary to implement the PROJECT. The specific scope of services that CONSULTANT shall provide in this work task shall be based on the 90% design drawings and acceptance of the final design report by the COUNTY, but generally shall include: 3.1 CONSULTANT will meet with COUNTY, FDEP, and Eglin other agency representatives to discuss the PROJECT and the proposed permitting activities and requirements. 3.2 CONSULTANT will prepare and complete permit applications and drawings as required by the FDEP permitting process and submit it to the COUNTY for review. Following review by the COUNTY, CONSULTANT shall adjudicate any comments, prepare a final version of the report, sign and seal it, and submit it to COUNTY for distribution. 3.3 CONSULTANT will prepare and complete permit applications