Project Highlight – AT&T Executive Education and Conference Center:
Indoor Environmental Consultants, Inc. (IEC) provided LEED certification indoor environmental quality (IEQ) testing for The University of Texas AT&T Executive Education and Conference Center located in Austin, Texas. The facility is a multi-use building consisting of a 335,000 GSF, 6 story, 297 room full service hotel with business offices, classrooms, ballrooms, restaurants, an interior courtyard, and below grade parking. The facility also houses the business offices of the UT McCombs School of Business. UT Project Management and Construction Services opted to obtain the LEED EQ Credit 3.2 for Construction Indoor Air Quality Management Plan: Before Occupancy by utilizing the testing option 2 under LEED for New Construction version 2.2 in lieu of a building flush-out due to occupancy deadlines.
IEC successfully completed the sampling of the building according to LEED guidelines prior to the occupancy deadline. The sampling plan included a phased implementation of the air testing as the building areas became available, and were prioritized by University of Texas project management based on expected completion dates. The intent of the IEC recommended phased implementation was to accommodate the occupancy of specific areas of the building prior to the full completion of other area of the building. Approximately 40 sampling locations were identified based on square footage served by HVAC air handling units and building configurations, including collection of samples in approximately 5% of the hotel rooms. For each portion of the building served by a separate ventilation system, the number of sampling points was not less than one per 25,000 square feet, or for each contiguous floor area, whichever was larger, and included areas with least ventilation and greatest presumed source strength.
LEED has established the following maximum concentration levels that must not be exceeded in order to meet certification criteria:
|Contaminant||Maximum Concentration **|
|Formaldehyde||50 parts per billion (27 ppb in LEED 2009 NC)|
|Particulates (PM10)||50 micrograms per cubic meter|
|Total Volatile Organic Compounds (TVOC)||500 micrograms per cubic meter|
|* 4-Phenylcyclohexene (4-PCH)||6.5 micrograms per cubic meter|
|Carbon Monoxide||9 parts per million and no greater than 2 parts per million above outdoor levels|
* This test is only performed if carpets with styrene butadiene rubber (SBR) latex backing material are installed as part of these building systems. Specifications for floor coverings should be reviewed and confirmed for the absence of styrene butadiene rubber (SBR).
** The requirement is to verify an indoor concentration that does not exceed the maximum concentration specified, with the building ventilations system operating in the minimum outside air mode.
The facility achieved its goal of a LEED Gold Certification, and IEC was excited to learn that the EQ 3.2 credit was the point that eventually brought the facility over the threshold level. The University of Texas is committed to sustainability in its building programs, and all new buildings on campus are now expected to meet the Leadership in Energy and Environmental Design standards. Read the Daily Texan article.
IEC President and Principal IAQ Consultant Hollis L. Horner is a LEED Accredited Professional.
Contact Hollis today to learn more about IEC LEED project management.
Building Council and awarded to individuals under license by the Green Building Certification Institute.