Shell Center for Sustainable Development Seminar Measurement Data is Crucial To Understanding Ozone Non-Attainment Issues in Houston Walt Crow Shell Center for Sustainable Development Seminar October 6, 2004

Background HRVOCs participate in the “rapid” and “efficient” formation of ground-level ozone in Houston Reductions in both emissions of NOx and VOC will be necessary to achieve attainment of both the 1-hour and 8-hour ozone standards in Houston Carefully crafted measurements are needed to: understand ozone formation mechanisms; characterize the complex meteorology of the region; better understand emission source and reactivity profiles; help validate photochemical and meteorological model performance; validate emission inventory estimates assess impact of transport of photochemical oxidants develop effective emission control strategies document improvements in air quality; and ensure compliance with proposed regulations.

What New Monitoring Initiatives Are Planned or are Underway? TexAQS II will focus on both urban and regional ozone formation and transport processes needed to develop effective strategies for complying with the: 1-hour ozone and 8-hour ozone standards in Texas The EISMN (Enhanced Industry Sponsored Monitoring Network) has added seven new automated GCs to HGB region to gather information needed to: develop reactivity source profiles help reconcile differences in reported emissions inventories help verify emission reductions of certain reactive VOCs New rules require real-time monitoring of HRVOCs from Flares, Cooling Towers, and uncontrolled Process Vents

What New Monitoring Initiatives Are Planned or are Underway (Continued) EMRS (Environmental Monitoring and Response System) - a TCEQ/Industry initiative to use near-real-time monitoring data to alert industry participants when elevated pollutant levels are detected in the atmosphere. EMRS will: prompt the investigation of facility of activities file routine notification reports to the agency will lead to best management practices to reduce emissions industrial pollutants Expanded ground-based ozone monitoring network in Houston area TCEQ is evaluating new remote sensing methods for monitoring real-time destruction efficiencies from industrial flares

Automated Gas Chromatograph

Passive Radiometric-FTIR System

Passive FTIR At Flare Test