# Columbia Gas System Service Corp — Pipeline Safety Interpretation - **operation:** document - **citation:** PI-70-0109 - **title:** Columbia Gas System Service Corp — Pipeline Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 1970-11-03 - **effective on:** Not available - **summary:** PI-70-0109 response to Columbia Gas System Service Corp concerning 192.3. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-70-0109.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-70-0109.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-70-0109 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1970/g70-11-03_Rosan_192.3_Service_Line-nlmx.pdf **body:** <<>> PI-70-0109 November 3, 1970 Mr. Richard A. Rosan Senior Vice President Columbia Gas System Service Corp 20 Montchanin Road Wilmington, Delaware 19807 Dear Mr. Rosan: Thank you for your letter of October 23, 1971, concerning application of Section 192.723 to leak surveys on customer service lines between the curb box and the customer meter. Section 192.3, 49 CFR, of the new minimum Federal safety standards defines a service line as a distribution line that transports gas to a customer meter set assembly from a common source of supply. It is our contention that under this regulation the burden is on the operator to ascertain the safe condition of the customer service lines to which gas is delivered. If we can be of any further assistance, do not hesitate to ask. Sincerely, Joseph C. Caldwell Acting Director Office of Pipeline Safety - **truncated:** false - **body characters:** 856