Building Flush-Out For LEED Projects I
LEED for New Construction: LEED-NC  

IEQ Credit 3.2: Construction IAQ Management Plan:
www.iersos.com

Industrial Hygiene Services

Before Occupancy
The intent of this LEED (Leadership in Energy and Environmental Design) Credit starts with the design of, then implement of, an Indoor Air Quality (IAQ) Management Plan Pre-Occupancy phase of a newly-constructed building with the goals of reducing indoor air quality problems and minimizing any health issues of the building occupants that may otherwise occur from the construction/reconstruction process.

This credit requires the development and implementation of an IAQ plan for the pre-occupancy phase of the building. Specifically, it requires a flush out of the indoor air prior to or during early building occupancy until 14,000 cu. ft. of outdoor air per sq. ft. of floor area has been delivered to the space. Alternatively, the requirements for this LEED credit can be met if IAQ testing can prove that maximum concentrations of EPA listed air pollutants are not exceeded. Please visit www.iersos.com for this IAQ Air Testing.

Industrial Hygiene Services (I.H.S.) is Portland, Oregon's leading provider of temporary and portable air, heating, cooling, dehumidifying, and air filtration services. Our years of experience enable us to uniquely size and design each LEED Flush-Out project for cost-effectiveness.

Not only can I.H.S. provide this IAQ solution, but we can provide all of the required documentation for this credit in and record air quality information during the phases of the Flush-Out, greatly simplifying your efforts to comply with the LEED requirements.

I.H.S. specialty equipment guarantees lower relative humidity levels and dew point temperatures inside the building while the outside air is supplied to prevent condensation and minimize the potential for mold.

If a Flush-Out is required (IAQ air sampling is not cost-effective or available or desired) for the LEED credit, our make-up air handling units combined with our air exhaust units are configured to your unique building to provide the necessary 100% outside air volume. This equipment typically includes 3 different types of air handling units: heat, dehumidification, and high CFM air supply units. This Specialized Equipment is engineered to your building space, as well as to the seasonal outdoor site conditions.

There are many types of make-up air and air handling equipment, each with their own benefits and ideal applications. Please see some of these types of equipment listed below.
There are several factors to consider when determining which type of equipment will have the least adverse impact on the environment. Amongst these are equipment efficiency, carbon monoxide emissions, types of fuel used, costs, and the ability to improve indoor air quality.Contact : www.iersos.com/BuildingFlush-Out.htm

Comparison of Equipment Types

Direct-Fired Make-up Air Heaters

Direct-Fired Tube Style Heaters

Indirect Fired

Heaters

Electric

Heaters

Combustion Efficiency

100

100

70-91

100

CO Emissions in Airstream

less than 10 PPM

less than 10 PPM

None

None

Products of Combustion in Airstream

Yes

Yes

None

None

Air/Ventilation

Outside (Fresh) Air

Outside (Fresh) Air

Outside (Fresh) Air or Recirculating

Outside (Fresh) Air or Recirculating

Mechanical Ventilation

Yes

Possible

Possible

Possible

Temperature Distribution with Less Stratification

Yes

Possible

Possible

Possible

Positive Pressure

Yes

Possible

Possible

Possible

Fuel Types

Propane or Natural Gas

Propane or Natural Gas

Propane, Natural Gas or Fuel Oil

Electric

Fuel Costs
(Per Million BTU)

Nat Gas $
Propane $$

Nat Gas $
Propane $$

Nat Gas $
Propane $$Fuel Oil $$

Electric $$$

Safety Risks

Minimal

Low

Low

Low

Environmental Risks

Minimal

Minimal

Minimal

Minimal