IAQ - BEYOND MATERIAL SELECTION

Transcription

1 IAQ - BEYOND MATERIAL SELECTION Sean McCrady, CMC, CIEC, LEED AP Vice President & Regional Manager Healthy Buildings, Western Region WASHINGTON, DC NEW YORK LOS ANGELES

2 LEARNING OBJECTIVES Installation of Building Materials LEED Project Challenges Other Factors Influencing IAQ Preventative Maintenance & Proactive IAQ Management

3 FUNDAMENTALS OF IAQ IAQ refers to the quality of air inside buildings as represented by concentrations of pollutants and thermal conditions that affect the health, comfort, and performance of occupants

4 IT S NOT JUST ABOUT CHOOSING THE RIGHT MATERIALS Uninstalled Insulation correctly wrapped Clean Conditions Air handler wrapped Capped air return duct Insulation on pallets Poly screen across access door

5 IAQ MANAGEMENT PLAN (DURING CONSTRUCTION) Based on SMACNA Guidelines HVAC Protection Pollutant Source Control Control of Pollutant Pathways Housekeeping Measures Environmental Benchmarks

6 EXAMPLE UNPROTECTED HVAC

7 REMODELING & RENOVATION Sustain the comfort and well-being of construction workers and building occupants during these activities. Material selection and installation Isolate construction activity from occupants

8 LEED IEQ CREDIT 3.2 Intent: reduce IAQ problems resulting from the construction/renovation process in order to help sustain the comfort and well-being of construction workers & building occupants

9 EQ 3.2: IAQ MANAGEMENT PLAN, BEFORE OCCUPANCY Two Paths for compliance Path One: After construction, prior to occupancy & with wall finishes applied flush out building by supplying 14,000 cu. ft. of O/A per sq. ft. of floor area. Maintain temp >= 60 deg. F, RH <= 60%. Occupancy can occur prior to flush-out completion, only after a minimum of 3,500 cu. Ft. O/A per sq. ft. of floor area and continued until 14,000 cu. ft of O/A per sq. ft. is met

10 EQ 3.2: IAQ MANAGEMENT PLAN, BEFORE OCCUPANCY Path Two: Air Quality Testing Prior to Occupancy After construction and prior to occupancy conduct baseline IAQ testing Conducted prior to occupancy, during normal occupied hours, with normal HVAC schedule & minimum O/A flow rate for duration of testing. All interior finishes must be installed. Furniture in place optional (Only for NC, required for CI) Sampling locations: for each ventilation zone, # of sample points shall not be less than one per 25,000 sq. ft., or for each contiguous floor area, whichever is larger. Demonstrate contaminant concentrations are below LEED mandated maximum levels as follows.

11 OTHER FACTORS AFFECTING IAQ Ventilation parameters Indoor sources of pollution Outdoor sources of pollution Airflow patterns and pressure relationships Vapor diffusion Air filtration systems Courtesy of the US EPA

12 TYPES OF INDOOR AIR POLLUTANTS Combustion contaminants Biological contaminants Legionella, Mold, etc. Volatile organic compounds Formaldehyde Soil gases Dander & allergens Particles and fibers

13 SOURCES OF OUTDOOR CONTAMINANTS Common Source Tips for Control Ambient Outdoor Air Air quality in general area Filtration or air cleaning of intake Local traffic Vehicle idling areas Loading dock Vehicular Sources Locate outside air intakes away from source Engine shut off at the loading dock Pressurize the building/zone Add vestibules/sealed doors near source Construction/Demolition Construction dusts, solvents Pressurize building Use walk-off mats

14 WASHINGTON, DC NEW YORK LOS ANGELES Courtesy of the US EPA

15 THE IMPORTANCE OF PREVENTIVE MAINTENANCE & PROACTIVE IAQ MONITORING Courtesy of the US EPA

16 PREVENTIVE MAINTENANCE A PM program provides care to all mechanical systems and components The most important tool for preventing IAQ problems Facilities with PM programs have fewer problems than those without Liability protection

17 AIR SAMPLING EQUIPMENT

18 LEED EBOM IEQ CREDIT 1.1 IAQ Best Management Practices IAQ Management Program I-BEAM: an educational tool and IAQ Management program for Property/Facility Managers Intent: To enhance IAQ by optimizing practices to prevent the development of IAQ problems in buildings, correcting air quality problems when they occur, and maintaining the well being of the occupants

19 MMM Chicken!

20 Healthy Buildings Commercentre Drive, Suite 150 Lake Forest, CA Tel (949) Fax (949)