Installation of Protective Articulated Concrete Mats for the CDWWTP and NDWWTP Outfalls

Title:

Installation of Protective Articulated Concrete Mats for the CDWWTP and NDWWTP Outfalls

Opening Date:

4/9/2024 2:00:00 PM

Announcement Info:

Scope of Work: (Contractor must obtain and submit all permits prior to performing any work.) The project consists of providing all labor, equipment, and supplies to perform: One (1) installation of protective structure along a 113 LF section of existing pipeline, consisting of 9,720 SQF of geotextile mat, Articulation Concrete Mat (ACB), 360 CY of riprap bubble and 60 CY of washed stone; and two (2) installation of protective structures along a 50 LF. Section of existing pipeline consisting of 4,300 SQF of geotextile mat, ACB mat, 160 CY of riprap rubble and ok30 CY of washed stone at the Central District Wastewater Treatment Plant (CDWWTP) 120” ocean outfall pipeline. The permanent repair includes the installation of articulated concrete block mats. The work of this project includes, but is not limited to, immediate mobilization; providing the services of commercial divers; complying with OSHA requirements; furnishing and installing materials for the repair; furnishing and installing materials necessary to provide scour protection on exposed areas of the Central District Wastewater Treatment Plant (CDWWTP) 120” ocean outfall pipeline. The project consists of the excavation of trenches, preparation of area immediately adjacent to exposed pipe, furnishing and installation of geotextile, furnishing and installation of washed rock, furnishing and installation of Articulated Concrete Block (ACB) Mats, connection of mats to each other and connection of new mats to existing adjacent mats, if present, and furnishing and installation of riprap armor in trenches overlying ACB, and removal of debris incidental to the construction. Two areas are to be repaired consisting of an approximate 84-foot length near Station 47+50 and an approximate 103-foot length near Station 130+00. The two locations at Stations 47+50 and 130+00 are located at coordinates (25°44’39.9’’N, 80°06’55.1’’W) in a depth of approximately 22 feet and at coordinates (25°44’34.9’’N, 80°05’24.7’’W) in a depth of approximately 43 feet, respectively. Stations 47+50 and 130+00 are approximately 9,135-ft and 17,366-ft offshore from the CDWWTP in Virginia Key, Miami-Dade County, Florida.

Technical Certification:

General Engineering Pipelines Engineering Contractor General Building Contractor Pipe Lines Underground Utility / Excavation

Commodities

Code	Description
91378	PIPELINE REMOVAL AND RELOCATION
92533	ENGINEERING SERVICES PROFESSIONAL
96820	BUILDING CONSTRUCTION
96842	GENERAL CONSTRUCTION
96865	PIPE LINE CONSTRUCTION AND REPAIR
28080	UNDERGROUND CABLES AND WIRES, SOLID AND STRANDED,

Solicitation Package/Addendums

Type	File Name
Package	MCC_7360_RPQ_P15703-R.pdf