• Personal exposure, outdoor and indoor concentrations measured at residences during each visit. The concentration of air pollutants were in eight separate tables based on the analytical types; VOC, Carbonyl, PM mass, PM XRF, PM ICPMS, PM OC EC, Particle phase PAH, Gas phase PAH).
• Questionnaires (Technician Walkthrough, Baseline Survey, and Activity questionnaire) results, air exchange rate, house volume, and average temperature and humidity inside and outside during the sampling.
• Information concerning time and location of microenvironment where participants spent time during sampling. 

Research data from HEATS

• Personal exposure, outdoor and indoor concentrations of VOCs measured at residences during each visit.
• Questionnaires (Technician Walkthrough, Baseline Survey, and Activity questionnaire) results, air exchange rate, house volume, and average temperature and humidity inside and outside during the sampling.
• Information concerning time and location of microenvironment where participants spent time during sampling.

Ambient Monitoring Data

• TCEQ CAMS: 24-hour data collected every six days during the period coinciding with RIOPA and HEATS at 12 sites in Harris County for RIOPA and HEATS compounds, specifically PM2.5 components, VOCs and carbonyls.
• TCEQ AutoGC:  One-hour speciated VOC data including some of the RIOPA and HEATS VOCs, measured by AutoGCs, during the period coinciding with RIOPA and HEATS.
• Meteorological Data: Hourly wind speed, wind direction and temperature datacollected at the TCEQ monitoring sites during the corresponding time period of the ambient concentration data.

NATA 1999 and 2002 data

Annual average ASPEN-modeled ambient concentrations and HAPEM-modeled population exposures at census tract level for Harris County for RIOPA VOC, carbonyl and PM2.5 compounds.

Emissions Inventory data from TCEQ

Facility and process-based speciated point source emissions inventory used by TCEQ modeling staff for modeling 8-hour ozone SIP (August/September 2000 episode) in Houston for 18 VOC classes.

Emissions Inventory data from NEI 1999

Facility-based annual average emission rates of HAPs and criteria pollutants of interest from industrial point sources for 1999.

GIS Interface

The GIS-based interactive mapping application has been developed using Environmental Systems Research Institute’s (ESRI) ArcGIS Server 10.0 software, and it provides access to each of the datasets described above.  To map the measured exposure concentrations, data has been aggregated from individual houses to the census tract level and the median of all measured concentrations, along with the total number of households or persons that were sampled within in each tract, is displayed.  Ambient monitoring data is also provided in the mapping application, and users can directly access the data download site for monitoring stations of choice.  Additionally, the average measurements for selected compounds collected during the HEATS study period are provided for CAMS stations.  Emissions inventory data is also provided, and the average TPY for selected compounds can be displayed and explored within the mapping application.  Finally, several ancillary datasets - such as urban areas, tract population, and land use/land cover - are available within the application.

Users can view the attributes of each dataset by using the Identify tool, and can measure distances between emission locations and high exposure concentrations using the Measure tool.  Users also have the ability to add a series of attributes from selected datasets to the “Results” tab and print these attributes along with a custom map.  Additionally, the Find Address tool allows users to quickly find an area of interest.

Help / GIS User's Guide

Mapping Application Help file

Access Mapping Application