Data QualityStewardship PlanmanualExpected Update Frequencymonthly
Data UpdatesUpdate MethodmanualUpdate SchedulemonthlyTotal Records at Initial Publish2802
Data DescriptionLong DescriptionThis dataset includes information about Aboveground Storage Tank (AST) system and Underground Storage Tank (UST) system petroleum release events, with their associated locations, contacts for remediation, and status in relation to currently being investigated, assessed, remediated, obtaining closure, or closed, dating back to 1986. The data are provided by the State of Colorado, Department of Labor & Employment, Division of Oil & Public Safety. There is no guarantee the data published are 100% accurate, correct, current or complete. This information is also publicly accessible at https://opus.cdle.state.co.us/OIS2000/ Tiered Closures: Tier I risk-based screening levels (RBSLs) are the default maximum concentrations for chemicals of concern (COCs) used to determine whether remediation (cleanup) is required. Tier I closure types generally represent situations where contamination was at or below the Tier I RBSLs at assessment or after remediation efforts have been completed. Tier II site-specific target level(s) (SSTLs) are the risk-based remedial action target levels for COCs developed for a particular site using site-specific geological and hydrogeological data in a predictive model. Tier II closure types generally represent situations where contaminants may be present on site, but pose no risk to the known points of exposure. Tier III closure criteria establishes conditions where all exposure pathways have been eliminated, even though dissolved-phase COCs remain above Tier I RBSLs beyond the release property boundary and beneath, but not beyond the adjoining public roadway. Tier IV closure criteria establishes conditions where all exposure pathways have been eliminated, even though dissolved-phase COCs remain above Tier I RBSLs beyond the release property boundary irrespective of land use and where no storage tanks remain on the release property. Release Events without a release date may represent records of tank closure assessment with no indication of contamination or COCs below Tier 1 RBSLs, a phase 2 Environmental Site Assessment with no indication of contamination or concentrations below Tier 1 screening levels, a Brownfield redevelopment site, and/or a release Event that pre-dates the use of release date records. Generally, lower Event ID numbers represent older release discoveries and higher Event ID numbers represent more recent release discoveries. Reimbursement amounts of zero imply that an application for reimbursement has been submitted and approved, but no costs have been reimbursed. Blank cells imply that the Event has not applied for reimbursement of remediation costs. Negative amounts imply that the required deductible amount has not yet been met.Collection MethodPoint address based geocodingField Names, comma delimitedEvent ID, Facility ID, Site Name, Address, City, Zip, State, County, Status, Release Date, No Further Action Date, No further Action Type, Contact, Phone, Email, Link, Latitude, Longitude, Latitude LongitudeDate of Initial Dataset Creation9/26/19
Dataset CoverageGranularityTabular Geospatial DataUnit of AnalysisIndividual Release EventGeographic CoverageState
Additional Dataset DocumentationData DictionaryTier I risk-based screening levels (RBSLs) are the default maximum concentrations for chemicals of concern (COCs) used to determine whether remediation (cleanup) is required. Tier I closure types generally represent situations where contamination was at or below the Tier I RBSLs at assessment or after remediation efforts have been completed. Tier II site-specific target level(s) (SSTLs) are the risk-based remedial action target levels for COCs developed for a particular site using site-specific geological and hydrogeological data in a predictive model. Tier II closure types generally represent situations where contaminants may be present on site, but pose no risk to the known points of exposure. Tier III closure criteria establishes conditions where all exposure pathways have been eliminated, even though dissolved-phase COCs remain above Tier I RBSLs beyond the release property boundary and beneath, but not beyond the adjoining public roadway. Tier IV closure criteria establishes conditions where all exposure pathways have been eliminated, even though dissolved-phase COCs remain above Tier I RBSLs beyond the release property boundary irrespective of land use and where no storage tanks remain on the release property.
