Questar Pipeline Company

First Revised Volume No. 1

 Contents / Previous / Next / Main Tariff Index



Effective Date: 01/01/2008, Docket: RP07-457-000, Status: Effective

Original Sheet No. 83A Original Sheet No. 83A : Effective






(d) When operationally feasible, Questar will exempt low-volume

sources from the CHDP Operating Limit on a non-discriminatory basis and accept

gas into its system that exceeds the posted CHDP Operating Limits. Questar

will post a system-wide minimum flowing volume that will establish the CHDP

Limit exemption threshold for small producing sources from individual MAP

points. Single sources with volumes of less than 100 Dth/d will generally be

exempt from the proposed CHDP Limits. However, whenever multiple low-volume

sources converge to cause Questar problems in meeting downstream CHDP

requirements, Questar may elect to temporarily suspend the minimum volume

exemption on localized portions of its system until the downstream CHDP

problems are resolved.


13.3 CHDP Operating Limit Posting Procedure.


(a) Questar may post a CHDP Operating Limit at or above the

CHDP Limit for each CHDP zone. The posted CHDP Operating Limit will apply to

all receipt points within the CHDP zone. Questar will provide as much prior

notice of changes to its CHDP Operating Limits as possible and attempt to

provide at least two days notice prior to the timely cycle nomination

deadline. However, Questar may reduce the CHDP Operating Limit to the CHDP

Limit at any time without notice, when operationally necessary. In such

event, Questar will post a critical notice on its Internet web site.


(b) For receipt points with online chromatographs, Questar

shall post on its internet web site the prior gas day average and maximum

calculated CHDP at each receipt point. For receipt points without online

chromatographs, once per month Questar shall post on its internet web site

the average and maximum calculated CHDP at each receipt point for the prior

month period. Compliance with CHDP limits will be determined based on

calculated current flowing CHDP temperatures.


13.4 CHDP Calculation. Questar shall perform the CHDP calculations

using an industry recognized equation of state and natural gas chromatograph

compositional analysis through C9. In the event of a dispute over calculated

CHDP temperature at a given receipt point, Questar's calculated value shall

control unless the disputing party can clearly identify the cause of the



13.5 If any gas tendered for receipt by Questar fails at any time to

conform to any of the quality specifications set forth in §§ 13.1 through

13.3, Questar may refuse to accept receipt of the non-conforming gas until

the gas meets the quality specifications. Questar's refusal to accept non-

specification gas does not relieve shipper of any of its obligations under

this tariff. Questar will attempt to notify a shipper when shipper's gas

does not conform to Questar's specifications.