page 5 of 5
2. Develop Control TechniquesThe type, amount, and timing of the various control measures should be written into the job specifications. Suggestions to handle outside sources include: minimizing building envelope penetrations; sitiing of construction related equipment away from the building especially outside air intakes; modifying outside air intakes with upgraded filtration and/ or relocation.
In the occupied spaces, vacate small renovation areas; schedule work in accordance with occupancy; specify minimally contaminating materials; create negative pressure in work areas; cap off return ducts; install barriers between work areas and occupied areas, and monitor effectiveness.
3. Bid DocumentsThe contractor should designate a representative for IEQ and ensure that channels of communication with subcontractors are clearly defined. The contractor should properly respond to the IEQ measures established by the specification and cover all costs. General emergency and evacuation plans should be specified.
4. ImplementationThe building should be monitored for particulate, VOCs and microbials most importantly prior to the installation of carpeting and other fleece surfaces to prevent the "sink" effect. The EPA has specified standard operating procedures for this process. The contractor's IEQ point person should be given the authority to correct problems that arise, and regular meetings should be held between the general contractor, subs, architect, owner, and engineers to solve IEQ problems. Test and monitor ventilation and exhaust airflow and suspected contaminant particles and gases within occupied areas of the building.
5. CommissioningIt is essential that IEQ monitoring be included in the commissioning process using parameters discussed above. Additionally, the building should be flushed with 100% outdoor air before and during initial occupancy, (as well as during construction if possible), and the HVAC system should be properly balanced. Deficiencies, especially of the ventilation systems, should not be considered as a deductible in the contract.
Finally, the owner should be protected against long term effects caused by construction materials and workmanship. Attention to construction IEQ protocols is essential for long-term building success.
"Construction/Renovation Influence On Indoor Air Quality", Kuehn,
Ph.D., P.E., October, 1996, pp 22-29. 6 Ibid. 7 Ibid.
© 2003 Edifice Rx. All rights reserved, Edifice Rx is a registered trademark of The Clean Air Company, Inc.