{"operation":"document","citation":"PI-08-0010","title":"State of Colorado Public Utilities Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2009-02-20","effective_on":null,"summary":"PI-08-0010 response to State of Colorado Public Utilities Commission concerning 192.8.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-08-0010.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-08-0010.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-08-0010","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/PI080010.pdf","body":"<<<PAGE 1>>>\n\nFebruary 20, 2009\nMr. Stephan Pott, PE\nChief, Gas Pipeline Safety\nState of Colorado Public Utilities Commission\n1560 Broadway, Suite 250\nDenver, CO 80202\nRef. No.: PI-08-0010\nDear Mr. Pott:\nThe Pipeline and Hazardous Materials Safety Administration (PHMSA) reviewed your\nDecember 11, 2008, letter transmitting an October 22, 2008, petition received by the Colorado\nPublic Utilities Commission (CO-PUC) from DCP Midstream for a finding that the endpoint of\nthe gathering designation for an intrastate gas pipeline should be extended beyond a gas\nprocessing plant. Specifically, DCP Midstream requested a finding that the gathering\ndesignation for a rural section of the ANGI intrastate pipeline be extended an additional 7.8\nmiles from the DCP Midstream Greeley Plant to the DCP Midstream Mewbourn Gas Plant, both\nof which are located in Weld County, Colorado.\nPer 49 CFR § 192.8 (a)(2) and Section 2.2 (a)(1)(A) of API RP 80, DCP Midstream included\ndocumentation they feel demonstrates that extending the gathering designation an additional 7.8\nmiles from the Greely Plant to the Mewbourn Plant was justified based on sound engineering\nprinciples.\nAdditional correspondence with DCP Midstream determined the following:\n• The Greeley Plant separates the methane out and sells it there; the liquids are placed in\ntanks at the facility and eventually transported to the intended destination via truck.\n• The remainder of the gas, including 90% ethane, 5% methane, and 2% CO2 is then\ntransported to the Mewbourn Plant for additional processing.\n• The normal operating pressure of the line is approximately 300 psig, down to\napproximately 150 psig when delivered to the downstream plant\nBased on the information provided in DCP Midstream’s petition, the additional correspondence,\nand your recommendation, PHMSA finds that extending the endpoint of the gathering\ndesignation for the ANGI gas pipeline an additional 7.8 miles to the Mewborne Plant is\nwarranted as long as the current operating parameters and operating pressures remain the same.\nAccordingly, to the extent this condition is met, PHMSA grants the petition. If DCP Midstream\nmakes any significant changes to the operation of this line, such as increasing the pressure to\nwhere the ethane might be in a liquid super critical phase, DCP Midstream will be required to\ncontact the CO-PUC and/or PHMSA’s Western Region to make a new determination.\n\n<<<PAGE 2>>>\n\nSincerely,\nSigned/JAG/2-20-09\nJohn A. Gale\nDirector, Office of Regulations","truncated":false,"body_characters":2505}