This is a service / maintenance or supply contract in Portsmouth, New Hampshire. Contact the soliciting agency for additional information.

The City of Portsmouth reserves the right to reject any or all proposals, to waive technical or legal deficiencies, and to accept any proposal and to negotiate such terms and conditions of a final contract that may be in the best interest of the City. The City of Portsmouth's Department of Public Works is requesting Proposals from consulting engineering firms who are on the NHDES roster of pre-qualified consulting engineers for the following project: To provide value engineering services for the City's Pease Wastewater Treatment Facility Rehabilitation. Questions should be directed in writing to purchasing@cityofportsmouth.com. The deadline for questions and requests for additional information is Friday December 29, 2023 @ 1:00 p.m. Addenda to this RFP, if any, including written answers to questions, will be posted on the City of Portsmouth website under the project heading. The value engineering of the design portion of this project will be funded either through sewer enterprise bonds or revenues. This project consists of a rehabilitation of the WWTF to expand the existing aeration capacity per NHDES requirements, replacing critical dewatering equipment, providing new electrical and communication services sized for future needs, and demolishing the 1950s era Control Building that has reached the end of its useful life. The scope of the project currently contains the following major items: o Replacement of the four existing SBR blowers with three new larger blowers sized for the average daily flow of 1.2 MGD and provide space and appurtenances for the addition of two future blowers. o Additional diffusers, hoists, and cantilevered walkways for diffuser hoist access in the SBR basins. o New precast primary sludge pump station. o Replacement of the existing belt filter press with two new screw presses for sludge dewatering. o Modifications of the existing odor control system to capture and treat air directly from the new screw presses. o New Electric/Control building, including new electrical feed, new main switchgear, and SCADA room. o New diesel-powered standby generator with belly tank and electrical transformer. o New underground electrical distribution system to existing MCCs. o New underground fiber optic loop for the existing control system. o New ancillary systems such as control systems, instrumentation, and communication, HVAC systems for the new buildings. o Demolition of the following items: o Old generator building (currently used as a storage shed) o Existing Control/Operations Building o Existing transformer o Existing standby generator o Existing aeration blowers in Blower/Dewatering Building o Existing belt filter press in Blower/Dewatering Building o The project also includes two bid alternates that the City can execute should they have sufficient funding. The scope of these bid alternates contains the following major items: o New Chemical Storage Building o Expansion of the existing Lab/Admin Building o Demolition of the following items: o Existing chemical storage tanks in and around Blower/Dewatering Building o Existing Quonset hut o Existing Ammonia Shed and storage tank. AECOM has completed the first phase of the design with the preparation of the 30% Design Plans and Preliminary Design report. The Preliminary Design Report includes: 1. Introduction and Purpose 2. Project Description 3. WWTF Flows, Loading and Effluent Limits 4. Solids and Flow Balances 5. Basic Design Data 6. Geotechnical Data Report 7. Civil Design Summary 8. Architectural Preliminary Design Summary 9. Structural Preliminary Design Summary 10. Mechanical - Process Design Summary 11. Mechanical - Odor Control Summary 12. Mechanical - HVAC, Plumbing and Fire Protection Design Summary 13. Electrical Preliminary Design Summary 14. Instrumentation and Control Preliminary Design Summary 15. Construction Sequencing 16. Projected Construction Drawing List 17. Projected Construction Specification List 18. Nomenclature List 19. Permitting Summary 20. Preliminary Opinion of Cost 21. Preliminary Drawings