Date
Inquiry

For the CNT Renovation, we propose for EQ Credit 3.2 to do baseline indoor air quality testing adapted from the EPA Protocol for Environmental Requirements. This includes the following sampling schedule: OUTSIDE BUILDING 1- Temperature and Humidity 1- CO2 and CO 1- Mold and mildew (viable fungal bioaerosals) 1- Formaldehyde 1- Total VOCs 1- Data track sample for 2.5-micron or smaller size particles 1- Sample for identifying particulates and size distribution 1st FLOOR (approx, 8,000 sq. ft. gross floor area each) 2- Temperature and Humidity 2- CO2 and CO 2- Mold and Mildew 2- Formaldehyde 2- Total VOCs 2- 4-Phenylcyclohexane 2- Total Particles 2- Other organic regulated pollutants such as NOx and SOx 2- Data track sample for 2.5-micron or smaller size particles 2- Sample for identifying particulates and size distribution 2nd and 3rd FLOOR (approx 3,000 sq. ft. gross floor area each) A sample of each of the above per floor We are adding to the protocol sampling for sub 2.5 micron particulates-both inside air and outside air. This particular air pollutant appears to be the most difficult to control in Chicago now that good progress has been made in the last several years to reduce ozone levels and other air pollutants to meet Federal and State standards. These measurements are especially pertinent to CNT since the building is located on a street with considerable auto and diesel semi- truck traffic. (The major sources of sub-2.5 micron particulates are diesel exhaust, coal-fired power plant emissions and the wear of radial tires). These measurements will be compared against the new EPA standards that are expected to be enforced within the next 12 months. We also propose to do these tests after occupancy begins during normal occupied periods under normal operation of the HVAC system. This is the only way we will be able to test the whole building since the renovation is being done in two phases in order to enable the staff to stay in the building during the renovation (by moving the staff within the building during the renovation.) We also save substantial money in the testing by doing it one time rather than bringing the consultant and their equipment out twice. We will also be documenting the amount of outside air (cfm) entering the building during the sampling period. We believe this will give useful information on the quality of the air to which the staff will be actually be exposed. This approach is consistent with the intent of flushing out the building for two weeks-to prepare the space for the occupants. The Owner and Contractor decided they could not afford that long a period of flushout in the project schedule. Instead we are planning a 24 hour flushout at 100% outside air.

Ruling

Compliance for IEQ Credit 3.2 can be achieved as detailed in the LEED-NC Rating System (a two week flush-out or IAQ testing according to the referenced standard) or the alternative EQc3.2 in LEED for Commercial Interiors (as per the credit ruling dated 10/8/2002). Your proposal is very similar to the latter. Testing must occur when the renovation is complete, and can be done with occupants in place. If maximum concentration levels are exceeded, a partial or full flush-out for two weeks or less must be performed, followed by a retest to indicate the requirements have been met. Applicable Internationally.

Internationally Applicable
On
Campus Applicable
Off