23107SIP 2008 DFW Severe AD SIP App A Adoption2008 DFW Severe AD SIP Appendix A TSD Adoptionhttps://www.tceq.texas.gov/downloads/air-quality/sip/ozone/dfw/naaqs-2008/23107sip_2008dfw_sev_ad_appa_tsd_ado.pdf/viewhttps://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png