NJ Schools Development Authority (NJSDA) | Trenton Central High School West – Utility Tunnel Inspection & Steam Condensate System Upgrade Project | Trenton, NJ Engineers
In accordance with a NJSDA Contract, E2PM has completed the tasks outlined below for the Trenton Central High School West facility located at 1001 West State Street, Trenton, New Jersey. The NJSDA in order to upgrade the steam heating system has identified concerns with the steam trap and condensate lines. The NJSDA is proposing to remove and replace all steam traps and condensate lines within the tunnel crawl spaces.
Asbestos Tunnel Inspection, Abatement design, Permitting, and AST Monitoring- E2PM and it’s ACM subcontractor conducted the asbestos inspection of all the utility tunnels beneath the High School building. E2PM conducted a safety meeting to discuss asbestos concerns along with confined space procedures. A site specific health and safety/confined space plan was prepared for the project. The primary objective was to inspect the tunnels for asbestos materials and to identify, sample, quantify, and assess a hazard ranking of all asbestos containing materials (ACM) within the tunnel space. E2PM has been tasked to provide asbestos inspection and abatement design services. The materials identified were inclusive of thermal system insulation (TSI) in the form of pipe insulation, pipe elbows and fittings, pipe debris, and duct insulation. Sampling was designed to address each homogenous material type for confirmation of asbestos content. Samples were collected from each suspect asbestos material within the tunnels and analyzed via Phase Light Microscopy (PLM) by a New Jersey accredited laboratory. Soil sampling of the tunnels was conducted to evaluate areas that may have been impacted by asbestos material that is either in poor condition or noted as asbestos debris observed on the ground.
Asbestos Project Design Report- E2PM and BSG have completed the Asbestos Project Design Report which includes drawings ACM-1 and ACM-2 and technical specifications for asbestos abatement (Attachment C). This Asbestos Design Report has been prepared with the understanding that the abatement activities will be conducted when the school is unoccupied. This Asbestos Design has addressed several critical factors in controlling potential fiber release episodes by accounting for ventilation pathways, worker decontamination units, waste container locations, air sampling locations, and regulatory requirements. The abatement design has been written to be in accordance with NJAC 5:23-Subchapter 8.
Verification of Condensate and Steam Lines and Quantification of Condensate Traps – E2PM verified the piping sizes and location and sizes from the original drawings and recreated as-built conditions based on the visual assessment. Additionally, E2PM inventoried the 1st and 2nd floor radiator units to help understand the system design and requirements for the replacement of the condensate lines. E2PM identified 5 trap types throughout the utility tunnels. The project would also include the replacement system of the boiler feed storage tank that serves as the condensate drum, receiving all steam condensate that flows back from the heating systems in the school.
Detailed Mechanical Engineering Design for the Condensate System Rehabilitation- Preparation of detailed signed and sealed plans and bid specifications for the replacement in kind of below grade condensate pipes, traps, and vacuum/feed tank. Performed structural engineering design, review and approval all wall opening access as needed for access. Provided construction administration services to include bid walk, pre-construction meeting, four site visits during construction, provide punch list and oversee commissioning and final sign off. Provide review and comment for RFI’s and shop drawings. Prepared detailed health and safety plans for the project.
Construction Support Services- To support the project during the construction Phase, E2PM, supported by its subcontractors provided the following services: assigned a certified Asbestos Safety Control Monitor (ASCM) firm to oversee the design, permitting, and oversight during the ACM abatement; the Asbestos Safety Technician (AST) supervised the ACM removal; the AST submitted the required NJDCA Permit Package; filed the ASCM Notifications; submitted the DCA Final TCO Filing paperwork; Weekly Monitoring by the project AST; Air Sampling (PCM); inspected the mechanical equipment and piping installation; managed the request for information and vendor submittal tasks; participated in progress meetings; and submitted a final ACM report.