Commercial Mold Remediation
A Hospital In Vermont
Problem: Severe mold growth on the interior duct mastic inside the cold deck ductwork serving hospital surgical suites.
Remediation: The ductwork was cleaned and the duct mastic was scrubbed with a fungistat, tested by an independent industrial hygiene consultant, and coated with an HVAC sealant.
Coordination: The project was performed on off hours and was coordinated with the HVAC Mechanical contractor, hospital facility personnel, and the independent industrial hygiene consultant.
A Central Massachusetts Church
Problem: Massive quantities of water were used to extinguish a large fire at the vestibule end of the church. The water was not properly dried and mold grew from the basement to the belfry. Approximately 50,000 cubic feet of attic blown-in insulation and 80,000 square feet of surface area was contaminated. In addition, 18,000 square feet of balcony and about 20,000 square feet of classroom ceilings and walls were contaminated. There was also asbestos containing material in the basement.
Remediation: Established separate containments in each area; engineered a negative airflow; removed all attic insulation, contaminated walls and ceilings; transported all contaminated materials safely to refuse containers; and HEPA-vacuumed and sanitized all remaining surfaces. Asbestos containing material was removed in accordance with federal, state, and local regulations.
Coordination: Envirotech Clean Air coordinated with the facility staff, the engineering company managing the project, the engineering company’s Industrial Hygiene firm, the asbestos removal company, and the rebuild / restoration company. The Church’s Industrial Hygienist was often on-site to inspect and document our work.
A High Profile 38 Story High Rise Office Building In Boston
Problem: A new cooling tower delivered water to fan coil units five to eight degrees cooler than the older system. This resulted in the pipes sweating and created a moisture problem in the walls and in the fan coil units. Mold grew in and on the wall, on the coil, and on the insulation of the fan coil unit housing. The Management Company had been sued by a number of tenants; the situation was adversarial.
Remediation: Established individual containments; engineered a negative airflow; removed over 50 fan coil housings and safely transported them, double-bagged, to the contained basement work area where they were stripped of insulation, cleaned, sanitized, and reinsulated with closed cell foam insulation. The remaining portion of the fan coil housings and the coils were cleaned and sanitized. Portions of the walls next to the fan coil units were contaminated. The walls were removed and the pipes and wall area was cleaned as above and the pipes were reinsulated with closed cell foam.
Coordination: Envirotech Clean Air coordinated with the facility manager, the facility staff, and the management company’s Industrial Hygienist and attorneys. The tenant’s Industrial Hygienist and attorneys were often on-site to scrutinize and document our work.
A Burlington, Massachusetts Commercial Space
Problem: A pungent odor emanated from a demising wall between two tenant areas on the third floor of an office building. The tenant areas and the demising wall were tested and found to have mold. The mold was growing within the wall. On one side of the demising wall was a kitchen and bathroom and on the other side of the wall was a large cubical office area.
Remediation: Established containment on both sides of the demising wall; engineered a negative airflow; removed approximately 1000 square feet of drywall, 20 linear feet of kitchen cabinets on the wet wall, and one bathroom wall. All surfaces in the contained work area were HEPA-vacuumed and sanitized. All removed contaminated materials were safely transported, double-bagged, through building to the refuse container.
Coordination: Envirotech Clean Air coordinated with the facility manager, facility staff, and management company’s Industrial Hygienist. The tenants’ Industrial Hygienist was on-site during all work to monitor and document all activities.
Commercial HVAC System Cleaning
A Rhode Island Private Office Building Complex Cooling Tower Cleaning
Problem: Legionella was found in a facility’s cooling tower located on the roof of the building. The Fortune 25 owner of the facility did not want to alarm its employees.
Remediation: The cleaning involved two 24-hour disinfection cycles with monitoring of the water chlorine and PH levels every 15 minutes and complete draining and scrubbing / pressure washing of the tower after each cycle. Chemicals were added as needed to adjust the chlorine and PH levels to levels as established by the Industrial Hygiene firm.
Coordination: Envirotech Clean Air coordinated with the facility manager and staff and the management company’s Industrial Hygiene firm to orchestrate a “secret cleaning” of the cooling tower. All work was done from Friday 6:00 PM to Monday 6:00 AM. Employees were electronically locked out of the building from Friday evening until Monday morning. Company trucks and uniforms were not used in an effort to conceal the gravity of the cleaning.
A Major Connecticut Pharmaceutical Plant
Problem: Dust, debris, and internal insulation from both the Air Handling Unit and the ductwork were blowing out of the vents into the office areas The system served approximately 75,000 square feet on three floors and had approximately 40 VAVs. The cleaning had to be done over the Thanksgiving weekend shut down.
Remediation: Various portions of the HVAC system were cleaned simultaneously. The ductwork and VAVs were placed under a negative pressure with large HEPA-filtered vacuums and the inside of the ductwork was cleaned with a combination of electric brushes, compressed air cleaning devices, and hand HEPA-vacuuming. The air handling unit and all components, such as the coils, drain pan, and fan, were cleaned. The deteriorated internal insulation in the air handling unit and ductwork were removed and replaced.
Coordination: Envirotech Clean Air coordinated with the facility manager and staff, the Safety Manager, and the office department coordinators. A mandatory facility safety training class was given by the Safety Manager the first day.
A Commercial Building with a Five Star Hotel, six Floors of Luxury Condominiums, a Spa, and Retail Floors in Boston
Problem: A fire during construction spread smoke and soot throughout all 14 stories of the structure. Smoke residue and soot was found in the ductwork, thus, the affected ductwork had to be cleaned.
Remediation: The HVAC Systems were inspected and tested by the industrial hygiene firm and the structural and duct cleaning consulting team. Various portions of the HVAC system were cleaned simultaneously. The ductwork was placed under a negative pressure with large HEPA-filtered vacuums and the inside of the ductwork was first cleaned with a combination of electric brushes, compressed air cleaning devices, and hand HEPA-vacuuming and then, where necessary, hand wiped. The air handling unit was cleaned by the HVAC installation company and the manufacturer.
Coordination: Envirotech Clean Air coordinated with the construction company and staff, the Industrial Hygiene firm, the restoration company, the structural and duct cleaning consulting team, the sheet metal union, and a duct cleaning subcontractor.