Cranford Phase 5 Stormwater Improvements - July 2023

The Township of Cranford, located in Union County, New Jersey, initiated a study through Mott MacDonald for Phase 5 of its comprehensive Northeast Quadrant Stormwater Management Project. This critical infrastructure endeavor aims to mitigate chronic flooding in residential areas #2 and #3 along the Rahway River, specifically addressing problems stemming from storm sewer surcharging and high river water levels inhibiting gravity drainage. The project's extensive scope includes the preliminary design for the construction of a permanent stormwater pumping station with a maximum design capacity of approximately 120 cubic feet per second (cfs) to serve both identified flood-prone areas, ensuring protection against approximately a 50-year storm event. Additionally, the plan details a new express sewer system, proposed along Brookside Place, Harvard Road, Penn Road, and Springfield Avenue, capable of conveying 50-year storm flows of about 60 cfs directly to Nomahegan Park. Furthermore, the scope encompasses the integration of collector storm sewer systems in areas like Balmiere Parkway, Crescent Place, and Park Drive, which will connect local discharge sewers to the proposed pump station when river levels are high, effectively managing interior drainage. This document constitutes a preliminary engineering study and cost estimate, prepared by Mott MacDonald for the Township of Cranford, and therefore does not outline specific contractor qualifications, professional licenses such as the NJ Public Works Contractor Registration, or mandatory experience requirements for prospective bidders. Details regarding pre-bid meetings, site visits, or submission protocols are not included within this technical report, as it precedes any formal procurement solicitation. The study focuses on evaluating various alternative designs for the pump station (Alternatives A, B, C, D) and collector sewer systems (Alternatives 1, 2), along with their associated preliminary estimated construction costs, to inform the Township's decision-making process for future project implementation. Interested contractors should monitor the official bid portals of the Township of Cranford for subsequent Requests for Proposals (RFPs) or Invitations to Bid (ITBs) that would specify all necessary contractor qualifications and procedural mandates. As a foundational engineering report rather than an active bid announcement, this document provides no specific instructions for bid submission, application processes, or required documentation from potential contractors. Likewise, there are no defined submission deadlines, requirements for bid security, performance bonds, or payment bonds mentioned herein. Contact information pertinent to active bid solicitations, such as purchasing agents or project managers for direct inquiries, is absent. The report's primary purpose is to present technical findings and preliminary cost projections for the Phase 5 stormwater improvements. Future procurement efforts for the construction of the Park Avenue Stormwater Pumping Station, Penn Road Express Sewer, and associated collector systems will be separately initiated by the Township of Cranford, at which point comprehensive submission guidelines, contact persons, and contractual obligations will be formally released.