Government Contract | Pennsylvania
Design of Stormwater Management & Flood Mitigation Project

Bid Information

Bid Alert No: 00000506593

Bid Title: Design of Stormwater Management & Flood Mitigation Project

Agency Bid No. Title: Not Stated

Received Date: 03/08/2016

Close Date: 03/24/2016

Purchase Type: Not Stated

Delivery Point: Radnor Township, Pennsylvania

Delivery Date: Not Stated

Special Notices: Pre-Bid Conference 03/14/2016 10:00 AM, Questions Due By 03/22/2016 12:00 PM


Specifications include, but are not limited to: The main objective of this scope of work is to provide the following services: site surveying / base plan preparation, geotechnical investigations, conceptual design verification / value engineering, permitting, and other activities necessary for the preparation of construction-level design documents. As conceived, the stormwater management / flood mitigation project at the intersection of Banbury Way / Francis Ave / Windsor Ave will consist of a 16,840 square foot underground stormwater storage / infiltration facility constructed of open-bottomed concrete chambers (5 feet tall; StormTrap or approved equal) in an aggregate envelope. This facility was conceptually sized with a total storage capacity of approximately 84,200 cubic feet (excluding storage within the voids of the stone envelope), which was the required volume to eliminate surface flooding at that location for the 25-year, 1-hour storm (2.35 inches), based on USEPA SWMM modeling. In addition to the storage system, the conceptual design also included several new inlets (with adequate pretreatment provided in the form of filter inserts and sediment sumps), at least two outlet control structures with connections to the existing storm sewers, four new street trees on Francis Ave, and a 550 square foot vegetated swale on Windsor Ave (to provide additional water quality and pretreatment). The conceptual plan also assumed that the existing stormwater management system in Francis Ave would be removed.

Product Codes: 92508, 92518

Agency Information

Issuing Agency: Township of Radnor

State: Pennsylvania

Agency Type: State and Local

Contact: 301 Iven Avenue, Wayne, Pennsylvania, 19087



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