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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Directional Drilling and Other Trenchless Technology Operations Conducted in Proximity to Underground Pipeline Facilities

Notice; issuance of advisory bulletin.

RSPA is issuing this advisory bulletin to owners and operators operators of natural gas and hazardous liquid pipeline systems to advise them to review, and amend if necessary, their written damage prevention program to minimize the risks associated with directional drilling and other trenchless technology operations near buried pipelines. This action follows several pipeline incidents involving trenchless technology operations which resulted in loss of life, injuries, and significant property damage. It also corresponds to National Transportation Safety Board (NTSB) Safety Recommendation P-99- 1, which suggests that RSPA

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