LocationLa Plata, Charles County, Maryland
MarketWastewater Treatment Plants
PRIMARY CLARIFIER REHABILITATION, PROCESS PIPING, SLUDGE AND SCUM PUMPING, BYPASS PUMPING, CONCRETE, ELECTRICAL AND INSTRUMENTATION IMPROVEMENTS.
Johnston Construction Company
- Served as Prime Contractor for comprehensive improvements to Primary Clarifier No. 1 at the operating Mattawoman Water Reclamation Facility.
- Upgraded the existing 130-foot-diameter primary clarifier and associated sludge and scum pumping station originally constructed in the late 1980s.
- Coordinated the complete rehabilitation and modernization of the primary clarification process while maintaining operation of the surrounding wastewater-treatment facility.
- Furnished and installed new process mechanical piping, pumping equipment and valves associated with Primary Clarifier No. 1.
- Furnished and installed a new primary clarifier mechanism within the existing concrete clarifier basin.
Concrete Services Division
- Served as the concrete subcontractor to Johnston Construction Company for the Primary Clarifier No. 1 Improvements at the Mattawoman Water Reclamation Facility.
- Performed specialized structural concrete work supporting rehabilitation of the facility's existing 130-foot-diameter primary clarifier.
- Furnished the labor, formwork-related materials, tools and equipment necessary to perform CSD's contracted concrete forming, placement, finishing and curing work.
- Constructed the new concrete components associated with the 130-foot-diameter clarifier, including:
- Associated clarifier concrete improvements
B & R Electrical Contractors
- Served as the electrical subcontractor to Johnston Construction Company for rehabilitation of Primary Clarifier No. 1 at the Mattawoman Water Reclamation Facility.
- Furnished the labor, materials, tools and supervision required to complete BRE's electrical scope.
- Performed the work in accordance with the project's applicable Division 16 Electrical and Division 17 Instrumentation and Control requirements.
- Executed electrical work based on project Drawings T-1, E-1, I-1 and I-2, together with Addenda 1, 2 and 3 and the applicable project specifications.
- Performed electrical demolition associated with the clarifier pumping systems.