School of Dental Medicine
Mercury Removal System
CAPACCIO provided a school of dental medicine with design and construction services for the replacement of several aging vacuum collection tanks. The original vacuum system was constructed of a galvanized steel vacuum piping system connected to a series of galvanized collection tanks. When the building was constructed, the vacuum system was connected to chair-side cuspidors, which were used for mouth washing and rinsing. The cuspidor system produced a continuous flow of water, allowing for continuous flushing of the vacuum lines and generated dilute concentrations of saliva and solids in the system. These wastewater streams were then filtered and discharged to the municipal sewer. Over the years, dental practices have switched from cuspidors at each chair to low volume and high volume evacuators (HVE). The switch to evacuators has resulted in significant reductions in flow resulting in solids build-up in the collection tanks requiring regular and routine manual cleaning. CAPACCIO designed a new vacuum tank system that incorporated radar level controls to monitor tank levels and a user-friendly pumping system to minimize operator contact with the waste material.
Chilled Water System Evaluation
CAPACCIO completed a chilled water system piping corrosion and remediation study at a major university located in Boston and assisted the client with cost-effectively replacing aging system components. CAPACCIO conducted inspections and thickness tests on a representative number of pipe segments to evaluate pipe wall thickness. Test results were compared to pipe wall thicknesses and corrosion rates were calculated to establish a plan for pipe replacement. CAPACCIO’s findings were presented in a report recommending a phased facility wide pipe replacement program for the chilled water piping system, where each phase took into account exhibited exterior corrosion, measured internal corrosion, the age of the piping, size and location of threaded piping, the critical nature of selected pipe runs, and accessibility of piping. It was also recommended that the school implement an insulation repair program.
Floor Drain Closure
CAPACCIO assisted a local secondary school with assessing and closing a number of floor drains under the underground injection well program. Our work included an extensive investigation including flow testing, dye testing and closed circuit television (CCTV) inspections to identify the discharge location for each drain. CAPACCIO developed a floor drain inventory and prepared site plans for use in closure planning. CAPACCIO coordinated with the school, the MassDEP, and a local plumbing inspector to prepare and submit the applicable forms for approval prior to floor drain closure: Form WS-1, Notice of Plumbing Inspector Approval to Seal Floor Drain and a “UIC Class V Well Pre-Closure Notification Form” (BRP-WS-06d) for each well or group of wells proposed for closure. CAPACCIO also prepared an area application to register ground water discharges.