Preliminary Design Report. This task provides for development and preparation of the project Preliminary Design Report (PDR). The PDR will serve as the foundation for detailed design (Task 5) and will incorporate findings and recommendations from Task 2. The Feasibility Study indicated that, generally, the open field northwest of the existing Airport Reservoir (Reservoir A) is suitable for construction of a new tank of up to 2.38 MG (Reservoir B). This scope assumes that the findings of the geotechnical investigation (Task 2) do not significantly alter the conceptual design criteria presented in the Feasibility Study. The PDR will evaluate and make preliminary design recommendations for developing the new Zone 2 Reservoir B site including temporary and permanent site access, site security, land area required for both temporary construction and permanent uses, above and below grade piping, tank instrumentation and controls, tank mixing requirements, lighting, grading, drainage, and visual impacts. Storm runoff from the existing Reservoir A site is currently conveyed to riparian drainage channel(s) adjacent to the site and/or is collected onto other Airport/City property. This scope assumes that the existing storm drainage piping and riparian drainage channels have sufficient reserve capacity to receive additional runoff from the Reservoir B site, design of new storm drainage piping will not be required, and conveying storm runoff from the Reservoir B site in this way will not result in significant environmental impacts. If additional storm drain design or environmental impact support is required, an additional scope of work will be prepared as part of Optional Task 9 (Additional Permitting or Support Services). The PDR will include layouts for the Reservoir B site, including proposed improvements, piping alignments, and elevations and sections as appropriate to demonstrate design intent at this stage. The Feasibility Study determined that a circular prestressed concrete tank (AWWA D110) will be required to meet the geometric constraints of the proposed Reservoir B site and is the most cost-effective alternative; consideration of other tank types/materials and preparation of a life-cycle cost estimate is excluded from this task. The PDR will evaluate and make preliminary design recommendations for the modifications to the structural, mechanical, electrical, and instrumentation assets at the Airport Booster Pump Station, the existing hydropneumatic tank, and site utilities/piping related to connecting the new ▇▇▇▇ ▇ ▇▇▇▇▇▇▇▇▇ ▇ to the Airport Booster Pump Station. In addition, the preliminary design recommendations for site November 15, 2020 Page 3 of 13 modifications will also consider the proposed future improvements to Well 17, the Airport Booster Pump Station, Reservoir A, and/or Reservoir B for the future treatment of hexavalent chromium [Cr(VI)], as recommended by the Hexavalent Chromium Removal Project Engineering Report (Draft), November 2016. Reduction/Coagulation/Filtration (RCF) reduction contactors and pressure filtration vessels with related mechanical, electrical and instrumentation improvements were identified as the preferred treatment approach for Well 17 in the 2016 report, though the preferred treatment technology could change in the future. This task would further assess civil, yard piping, mechanical and/or electrical and instrumentation improvements anticipated to be required for the future treatment of Cr(VI) that may require coordinated and/or phased site-specific master planning recommendations with sufficient flexibility of design to be implemented with the Reservoir B construction project. The PDR will provide information as required by the State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW) and Drinking Water State Revolving Fund (SRF) guidelines for technical report content, including discussion of civil (site), mechanical, piping, structural, electrical, and instrumentation design criteria. A preliminary construction cost estimate will be provided in accordance with AACE guidelines, Class Ł. The PDR will include preliminary electrical and instrumentation design recommendations by the electrical/instrumentation SUBCONSULTANT which will include the following tasks: • Evaluation of the existing booster pumps and their control system, which includes a combination of VFD-driven and constant-speed motors. Recent discussion with CITY operational staff indicated that the operational complexity of the existing booster pump control system may negatively affect Operator response time. Proposed modifications to the existing booster pump control system could include options for simplifying operator interfaces, enhancing system operation and improving system reliability. 12 hours of SUBCONSULTANT time including one site visit/controls meeting with City staff at the Airport Booster Pump Station is assumed. • Development of a preliminary control strategy (in conjunction with the CONSULTANT) and proposed electrical and instrumentation modifications based on pump sizing, number of pumps, and the necessity of VFDs on each pump. Participation in the draft PDR meeting is included under Task 1.2. • Preliminary new Reservoir B site lighting and site security layout in accordance with CITY Airport Department requirements including any restrictions, which will be determined after initial coordination by CITY. 1Ł hours of SUBCONSULTANT coordination time including a virtual meeting with the CITY Airport Department is assumed. Modifications to the existing Reservoir A site lighting and tank security system are excluded from this task but could be evaluated with Optional Task 9. • Coordination with the ▇▇▇▇▇▇ Well design engineer to determine if there are requirements for interlocking the proposed new control system at the existing Reservoir A and Airport Booster Pump Station site with the new ▇▇▇▇▇▇ Well facility. Any such requirements will be included as part of the preliminary control strategy developed in the PDR. 8 hours of SUBCONSULTANT coordination time with the ▇▇▇▇▇▇ Well design engineer is assumed. A draft PDR will be submitted for CITY review followed by the final PDR which will incorporate City comments following the PDR review meeting. All key decisions, action items, and responses to CITY comments will be tracked and submitted with the final PDR. November 15, 2020 Page Ł of 13 • All deliverables will be provided in electronic format (PDF) and as bound hard copies (3 each). • This scope assumes 16 hours for desktop assessment of existing booster pumps, ancillary mechanical components at Airport Booster Pump Station, and Well 17 (excludes its disinfection system) using operational data and available inspection reports provided by the CITY. • City will furnish available record drawings and pump data including performance curves, test reports, and SCADA output data. • The PDR will include technical content and format as required by DDW and SRF technical report guidelines; CITY will furnish all additional information required by DDW and SRF including Technical, Managerial, and Financial (TMF) Assessment Form, Certification for Compliance with Water Metering Form, Water Rights Documentation (if applicable), Water Conservation Program (if applicable), Memorandum of Understanding (if applicable), and Urban Water Management Plan (if applicable). • Evaluation of structural modifications to the Well 17 building, the Airport Booster Pump Station building, and the existing Zone 2 Reservoir A is excluded from this task. • Property access, property jurisdiction transfer, and all other coordination associated with property ownership and property rights will be provided by the CITY. • The existing storm drainage piping and riparian drainage channels have sufficient reserve capacity to receive additional runoff from the Reservoir B site, design of new storm drainage piping will not be required, and conveying storm runoff from the Reservoir B site in this way will not result in significant environmental impacts. • Architectural renderings will not be required under this task but could be provided as part of Optional Task 9. • Existing Airport Booster Pump Station electrical service assets including the transformer, switchgear, Motor Control Center, and standby generator are sufficiently sized and of adequate condition to accommodate anticipated pump modifications, and will not require additional capacity, replacement, or coordination with the service provider. • Future construction of an RCF or alternative treatment system for Cr(VI) removal will be in the same vicinity as recommended in the above-referenced 2016 report. • Cathodic protection of buried valves and pipelines is currently assumed to not be required, but could be further evaluated with Optional Task 9. • Draft and final Preliminary Design Report. This task provides for the following:
Appears in 1 contract
Sources: Consultant Services Agreement
Preliminary Design Report. This task provides for development and preparation of the project URS will submit a Preliminary Design Report (PDR). The PDR will serve as the foundation for detailed ) concurrently with preliminary design (Task 5) and will incorporate findings and recommendations from Task 2. The Feasibility Study indicated that, generally, the open field northwest of the existing Airport Reservoir (Reservoir A) is suitable for construction of a new tank of up to 2.38 MG (Reservoir B). This scope assumes that the findings of the geotechnical investigation (Task 2) do not significantly alter the conceptual design criteria presented in the Feasibility Study. The PDR will evaluate following: • Flash Mixing • Flocculation • Sedimentation • Filtration • Solids handling • Clearwell storage and make preliminary design recommendations for developing the new Zone 2 Reservoir B site including temporary CT Basin • Filter Washwater Treatment and permanent site access, site security, land area required for both temporary construction and permanent uses, above and below grade piping, tank instrumentation and controls, tank mixing requirements, lighting, grading, drainage, and visual impacts. Storm runoff from the existing Reservoir A site is currently conveyed to riparian drainage channel(s) adjacent to the site and/or is collected onto other Airport/City property. This scope assumes that the existing storm drainage piping and riparian drainage channels have sufficient reserve capacity to receive additional runoff from the Reservoir B site, design of new storm drainage piping will not be required, and conveying storm runoff from the Reservoir B site in this way will not result in significant environmental impacts. If additional storm drain design or environmental impact support is required, an additional scope of work will be prepared as part of Optional Task 9 (Additional Permitting or Support Services). Recycle • Well Blending Facility The PDR will include layouts the established design criteria, existing site plans, reports on existing conditions, design alternatives, probable construction cost and schedule estimates, and permit requirements. Specific elements of the PDR include: • Preliminary design plans, drawn to scale, showing proposed design of facilities • Table of Contents for the Reservoir B sitetechnical specifications for the project; • Discussions and evaluations related to the plant improvements and the alternatives investigated; • Discussion of how enhanced coagulation methods will be tested and operated • Recommended alternatives defined from the evaluations for the plant improvements detailing how and why the recommendations were made; • Preliminary Project Schedule for design, including proposed improvements, piping alignmentsbidding, and elevations and sections as appropriate to demonstrate design intent at this stage. The Feasibility Study determined that a circular prestressed concrete tank (AWWA D110) will be required to meet the geometric constraints construction; • A preliminary probable construction cost of the proposed Reservoir B site and is the most cost-effective alternativeproject; consideration of other tank types/materials and preparation of a life-cycle cost estimate is excluded from The preliminary design report will discuss each item included under this task. The PDR Analysis of proposed design alternatives will evaluate and make preliminary design recommendations for include a list of the modifications to impacts on system operations, the structuralenvironment, mechanical, electricalconstruction cost and/or schedule, and instrumentation assets at the Airport Booster Pump Station, the existing hydropneumatic tank, and site utilities/piping related to connecting the new ▇maintenance budget. ▇▇▇ ▇ ▇▇▇▇▇▇▇▇▇ ▇ to will submit a draft copy of the Airport Booster Pump Station. In additionPDR for City’s review, the preliminary design recommendations for site November 15, 2020 Page 3 of 13 modifications will also consider the proposed future improvements to Well 17, the Airport Booster Pump Station, Reservoir A, and/or Reservoir B for the future treatment of hexavalent chromium [Cr(VI)], as recommended by the Hexavalent Chromium Removal Project Engineering Report (Draft), November 2016. Reduction/Coagulation/Filtration (RCF) reduction contactors and pressure filtration vessels with related mechanical, electrical and instrumentation improvements were identified as the preferred treatment approach for Well 17 in the 2016 report, though the preferred treatment technology could change in the future. This task would further assess civil, yard piping, mechanical and/or electrical and instrumentation improvements anticipated to be required for the future treatment of Cr(VI) that may require coordinated and/or phased site-specific master planning recommendations with sufficient flexibility of design to be implemented with the Reservoir B construction project. The PDR will provide information as required by the State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW) and Drinking Water State Revolving Fund (SRF) guidelines for technical report content, including discussion of civil (site), mechanical, piping, structural, electrical, and instrumentation design criteria. A preliminary construction cost estimate will be provided in accordance with AACE guidelines, Class Ł. The PDR will include preliminary electrical and instrumentation design recommendations by the electrical/instrumentation SUBCONSULTANT which will include the following tasks: • Evaluation table of contents for Technical Specifications. In conformance with the City’s recommendations and upon mutual agreement of modifications deemed necessary by City and URS, we will reevaluate, revise, and finalize the report. The final copy of the existing booster pumps and their control system, which includes a combination of VFD-driven and constant-speed motors. Recent discussion with CITY operational staff indicated that PDR will be in sufficient detail to facilitate the operational complexity final engineering design of the existing booster pump control system may negatively affect Operator response timeplant upgrade facilities. Proposed modifications ▇▇▇ will submit to the existing booster pump control system could include options for simplifying operator interfaces, enhancing system operation and improving system reliability. 12 hours City four copies each of SUBCONSULTANT time including one site visit/controls meeting with City staff at the Airport Booster Pump Station is assumed. • Development of a preliminary control strategy (in conjunction with the CONSULTANT) and proposed electrical and instrumentation modifications based on pump sizing, number of pumps, and the necessity of VFDs on each pump. Participation in the draft PDR meeting is included under Task 1.2. • Preliminary new Reservoir B site lighting and site security layout in accordance with CITY Airport Department requirements including any restrictions, which will be determined after initial coordination by CITY. 1Ł hours of SUBCONSULTANT coordination time including a virtual meeting with the CITY Airport Department is assumed. Modifications to the existing Reservoir A site lighting and tank security system are excluded from this task but could be evaluated with Optional Task 9. • Coordination with the ▇▇▇▇▇▇ Well design engineer to determine if there are requirements for interlocking the proposed new control system at the existing Reservoir A and Airport Booster Pump Station site with the new ▇▇▇▇▇▇ Well facility. Any such requirements will be included as part of the preliminary control strategy developed in the final PDR. 8 hours of SUBCONSULTANT coordination time with In addition to hard copies, electronic files for the ▇▇▇▇▇▇ Well design engineer is assumed. A draft final PDR will be submitted for CITY review followed by on compact disc with the final PDR which will incorporate City comments following the PDR review meeting. All key decisionsreport, action itemspreliminary site layouts, specifications table of contents, and responses to CITY comments cost estimates saved in the most recent release of MS Word/Excel and AutoCAD 2009 and/or PDF format. URS will be tracked prepare site layout and submitted with equipment diagrams (30% design level) for the final PDRfacilities. November 15URS will provide piping layouts, 2020 Page Ł of 13 • All deliverables will be provided in electronic format (PDF) mechanical components, road and as bound hard copies (3 each). • This scope assumes 16 hours for desktop assessment of existing booster pumpssite improvements, ancillary mechanical components at Airport Booster Pump Stationstructures, and Well 17 (excludes its disinfection system) using operational data and available inspection reports provided by limited cross sections of proposed improvements. ▇▇▇ would summarize the CITY. • City will furnish available record drawings and pump data including performance curves, test reports, and SCADA output data. • The PDR will include technical content and format as required by DDW and SRF technical preliminary design in a report guidelines; CITY will furnish all additional information required by DDW and SRF including Technical, Managerial, and Financial (TMF) Assessment Form, Certification for Compliance with Water Metering Form, Water Rights Documentation (if applicable), Water Conservation Program (if applicable), Memorandum of Understanding (if applicable), and Urban Water Management Plan (if applicable). • Evaluation of structural modifications to the Well 17 building, the Airport Booster Pump Station building, and the existing Zone 2 Reservoir A is excluded from this task. • Property access, property jurisdiction transfer, and all other coordination associated with property ownership and property rights will be provided by the CITY. • The existing storm drainage piping and riparian drainage channels have sufficient reserve capacity to receive additional runoff from the Reservoir B site, design of new storm drainage piping will not be required, and conveying storm runoff from the Reservoir B site in this way will not result in significant environmental impacts. • Architectural renderings will not be required under this task but could be provided as part of Optional Task 9. • Existing Airport Booster Pump Station electrical service assets including the transformer, switchgear, Motor Control Center, and standby generator are sufficiently sized and of adequate condition to accommodate anticipated pump modifications, and will not require additional capacity, replacement, or coordination with the service provider. • Future construction of an RCF or alternative treatment system for Cr(VI) removal will be in the same vicinity as recommended in the above-referenced 2016 report. • Cathodic protection of buried valves and pipelines is currently assumed to not be required, but could be further evaluated with Optional Task 9. • Draft and final Preliminary Design Report. This task provides for City that would address the following:
Appears in 1 contract
Sources: Professional Services