Description: This point feature class represents emergency response spills received and investigated by the TCEQ. Reported incidents are assigned a unique Incident Tracking Number to document responsible parties, released materials, affected media, and investigation statuses. Note that individual tracking numbers may appear multiple times if multiple materials, media, or impacts were recorded for a single incident. Source & Lineage:Data Source: TCEQ Emergency Response Spills Dataset - https://data.texas.gov/dataset/Texas-Commission-on-Environmental-Quality-Emergenc/xagr-a3x2/about_dataGeometry & Attribute Processing: Derived by Grapevine Public Works GIS staff using coordinates and location descriptions provided in state incident reports.Maintenance & Update Frequency: As Needed / Periodic (Updated following state dataset releases)Process Step (Lineage Description):Data Extraction: Spill incident records were downloaded from the state open data portal ([https://data.texas.gov/dataset/Texas-Commission-on-Environmental-Quality-Emergenc/xagr-a3x2](https://data.texas.gov/dataset/Texas-Commission-on-Environmental-Quality-Emergenc/xagr-a3x2)).Spatial Filtering & Mapping: Incidents located within the municipal boundary and ETJ were filtered and mapped to spatial coordinates.Attribute Population: Incident tracking numbers, customer/entity names, released materials, and physical descriptions were imported into the enterprise geodatabase (Last updated July 4, 2023).
Description: This polygon feature class represents properties certified under Texas Commission on Environmental Quality (TCEQ) Municipal Setting Designation (MSD) provisions. An MSD certifies that groundwater beneath designated properties is contaminated above protective potable levels and prohibits its future use as drinking water.Source & Lineage:Data Source: TCEQ MSD Program - https://www.tceq.texas.gov/remediation/msd-certificateGeometry Creation: Digitized by City of Grapevine Public Works GIS from site boundaries and legal descriptions; attributes populated from state certification documents.Last Updated: August 2, 2023.Maintenance & Update Frequency: As Needed (Updated upon city adoption of new MSD ordinances or TCEQ certification issuances)Process Step (Lineage Description):Source Gathering: MSD site filings and certificates were downloaded from the TCEQ MSD program portal ([https://www.tceq.texas.gov/remediation/msd-certificate](https://www.tceq.texas.gov/remediation/msd-certificate)).Digitizing: Geometries were created by GIS staff using property boundaries and deed descriptions matching city-adopted MSD ordinances.Attribute Population: Certificate numbers, enactment dates, and site details were populated (Last updated August 2, 2023).