2017 Systems installed by time period 2017 Systems installed by time period https://www.tceq.texas.gov/downloads/permitting/ossf/reporting-system/oars2017.pdf/view https://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png 2017 Systems installed by time period 2017 Systems installed by time period oars2017.pdf — 409.5 KB