 | | | | Schools  | | Identifying Pipelines Near Your School  Black, yellow and white pipeline markers are located along the pipeline route and identify the general location, the specific products transported, the operator’s name and the operator’s emergency contact number. National Pipeline Mapping System.
In addition, the federal government provides access to maps that show the approximate location of transmission pipelines in your community. To view maps visit the online To identify the exact location of a pipeline before digging or excavating on school property, contact your local One-Call Center by calling 811. | | |