Mechanical Remediation Dredging in the Lower Harbor

>>>>>This Solicitation is now posted under W912WJ-17-R-0003<<<<< Mechanical Remediation Dredging in the Lower Harbor New Bedford Harbor Superfund Site, New Bedford, Ma Solicitation Number: W912WJ-16-R-0002 Restrictions: Unrestricted Title: Mechanical Dredging in the Lower Harbor, New Bedford Harbor Superfund Site, New Bedford, Massachusetts Location: Lower Harbor of New Bedford and Fairhaven, Massachusetts Issue Date: on or about March 25th, 2016 Closing Date: on or about April 28th, 2016 Project Magnitude: More than $10,000,000. The U.S. Army Corps of Engineers will be issuing a Request-for-Proposal for a new Firm-Fixed-Price construction dredging contract utilizing a best Value Tradeoff acquisition approach. The project involves the mechanical remediation dredging of PCB contaminated sediments and disposal into a Confined Aquatic Disposal (CAD) Cell. Work consists of providing materials, equipment and labor for mechanical dredging of approximately 120,000 cubic yards (CY) of material and depositing it in the Lower Harbor Confined Aquatic Disposal Cell (LHCC). The work requires the contractor to achieve precise dredge cuts. Dredging, placement of material into scows, transport of the material, and depositing of material into the LHCC must be performed with minimal spillage or turbidity. All work to be performed under this contract including all dredge areas and the LHCC is located between the Route 195 and Route 6 bridges. The scope involves dredging in depths of up to 30 feet of water and as shallow as 3 feet. Sediments placed into the LHCC will be dredged using mechanical dredging equipment with an environmental bucket (closed bucket). Debris removal and disposal will be required prior to dredging and may include discarded metal objects, timber, and abandoned piers. Dredging accuracy will be key to minimizing the amount of over-depth dredging while still attaining the required dredge elevation. State-of-the-art monitoring and positioning systems are required to ensure dredge accuracy requirements are met. The debris removal and dredging shall be performed so that the project-specific turbidity criterion of 50 neptholometric turbidity units (ntu) above background measured 300 feet down-current of the dredge area is not exceeded. The dredged sediments will be placed into split-hull scows for transport to the LHCC. Free-standing water collected in the scows/hoppers shall be decanted and filtered using activated carbon to ensure compliance with this same 50 ntu turbidity criterion. A silt curtain and oil boom shall be placed around the perimeter of the LHCC. Please note this solicitation is an Unrestricted Request-for-Proposal for a new Firm-Fixed-Price construction dredging contract utilizing a best Value Tradeoff acquisition approach, under the applicable NAICS code 237990. This is not a request for proposals at this time, the solicitation requirements and contract documents to include instructions for submission and the response date will be available on or about March 25th, 2016. Neither telephonic, mailed nor faxed requests for hard copies of this solicitation will be accepted. The solicitation will only be available online; in order to download the solicitation, offerors must access the Federal Business Opportunities website (www.fbo.gov). All responsible sources may submit a bid which shall be considered by the New England District. Additional questions may be emailed to the Contract Specialist at contact@example.gov