(1) Unless otherwise specified by the Contracting Officer, the Contractor shall not provide any deliverable or construction material under this contract that. “Mechanically disjointed” means that the materials can, in principle, be separated by mechanical actions such as unscrewing, cutting, crushing, grinding, and abrasive processes. (2) Homogeneous material does not include conversion coatings that chemically modify the substrate. (1) Examples of homogeneous materials include individual types of plastics, ceramics, glass, metals, alloys, paper, board, resins, and surface coatings. “Homogeneous material” means a material that cannot be mechanically disjointed into different materials and is of uniform composition throughout.
PROHIBITION OF HEXAVALENT CHROMIUM (JAN 2023)
#Hexavalent chromium professional#
Additionally, Tribar has engaged professional environmental consultants Barr Engineering and August Mack to assist the company with ongoing environmental issues, processes, and procedures.As prescribed in 223.7306, use the following clause: In order to make sure these types of events do not occur in the future, Tribar is making changes to the Company’s environmental operations. Additionally, the quick action taken by the City of Wixom wastewater treatment operators helped contain any discharges to the Huron River system. While it’s very disappointing the discharge occurred, the Tribar filtration system performed as it was designed, capturing nearly all the hexavalent chromium prior to release. Tribar Management became aware of the situation on Monday morning, confronted the former employee with questions and removed him from his role in our waste treatment department as we began our investigation into the situation. As previously reported, a now former employee, who was not authorized to be in our facility while it was closed for the weekend, intentionally overrode our alarms and systems on multiple occasions which caused the release of the hexavalent chromium. Tribar has taken and continues to take our obligations to the environment and community very seriously.
Only de minimis amounts of chromium were found during testing along a 42-mile stretch of the river systems downstream of the city’s wastewater treatment plant, and no test results have yet exceeded safety limits for any applicable human contact, surface water or aquatic life. Testing at Tribar’s plant, the wastewater treatment plant and the Huron River system show that greater than 99% of the hexavalent chromium was converted to non-toxic trivalent chromium or caught within the Plant 5 granular activated carbon (GAC) system prior to its release into the city’s wastewater system.
#Hexavalent chromium full#
Tribar issued the following full statement regarding the report and technical memorandum:Īn extensive, third-party investigation into the unauthorized release at Tribar’s Plant 5 in Wixom has concluded that environmental controls at Plant 5 and the city’s wastewater treatment plant appear to have captured the discharge before any material environmental impact to the Huron River system could occur. Technical Memorandum by WXYZ-TV Channel 7 Detroit on Scribd
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