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<br />due to metered pressure and corrected for deviation using average values of recorded relative density and flowing <br />temperature, or by using the calculated relative density detennined by the method mentioned in paragraph (c) below. <br />In no circumstance will the average value of flowing temperature or relative density be determined for a period of <br />less than one day. <br /> <br />, <br />(b) The facilities installed for measurement of gas hereunder will be installed and operated. and gas measurement <br />computations will be made. in accordance with current industry standards. Orifice metering will be done in <br />accordance with the latest version of A.G.A. Report No.3- ANSUAPI 2530. Positive displacement and turbine <br />metering will be done in accordance with the latest version of A.G.A. Repon No.7. Electronic Gas Measurement <br />(EGM) will be done in accordance with the latest version of API Manual of Petroleum Measurement Standards <br />Chapter 21 - Row Measurement Using Electronic Metering Systems. <br /> <br />(c) TXUGO may at its expense properly install and operate a device of standard make to continuously determine or <br />record flowing temperature. The temperature values shall be used in gas measurement computations. With respect to <br />relative density (specific gravity) of the gas, such shall be detennined by (i) [on-site] sampling and laboratory <br />analysis: or (ii) any other method which is of standard industry practice; (Hi) provided, however. that eilher party <br />may at its own expense properly install and operate a recording relative density instrUment of standard make and in <br />this event the relative density as recorded shall be used in the gas measurement computations. <br /> <br />(d) The average heating value (in Btu) and relative density of the gas delivered hereunder by either party may be <br />dete""ined by the use of recording instruments of standard type. which may be installed and operated by TXUGO al <br />the measuring point, or at such other point or points as are mutually agreeable to both parties; provided. however. if <br />there is no Btulrelative density instrument at a particular Receipt or Delivery Point specified herein or agreed upon <br />hereunder. then the healing value and relative density of the gas at such point may be determined by [on-site] <br />sampling and laboratory analysis. <br /> <br />(e) The terms "decathenn" and "MMBtu" may be used interchangeably in this Contract as a measure of volume or <br />heat content under the conditions stated in paragraph 8(a), and may be convened from one to the other in accordance <br />with the Ideal Gas Laws under those conditions when necessary. <br /> <br />(f) The te"" "Mcr' means one thousand (1,000) cubic feet of gas under the conditions stated in paragraph 8(a). <br /> <br />(g) In gas measurement computations the detenninations for the average values for meter pressure. relative density <br />and flowing temperature values will be detennined only during periods of time when gas is actually flowing through <br />the measuring facilities. <br /> <br />9. Measurin2 Eauinment and Testin2 <br /> <br />(a) The gas delivered to TXUGO (or its designee) at the Receipt Point(s) for transportation by TXUGD will be <br />measured by means of gas measuring devices of standard type that wiJI be installed. operated and maintained by <br />TXUGO (or its designee) and gas delivered to Customer at the Delivery Poin~ whether sold or transported, will be <br />measured by electronic gas measurement facilities of standard type that will be installed. operated and maintained by <br />TXUGD (or its designee). Gas measurement devices and equipment will be tested and adjusted for accuracy on a <br />regular schedule by TXUGD (or its designee). <br /> <br />(b) If adequate measuring facilities are already in existence at the Receipt Point(s) and adequate electronic <br />measuring facilities are already in existence at the Delivery Point hereunder. such existing measuring facilities will <br />be used for so long as. in TXUGD's sole opinion. they remain adequate and the pany having title to such facilities <br />will retain title to such facilities. <br /> <br />(c) It is agreed that it will be necessary forTXUGD to install electronic gas measurement facilities at the Delivery <br />Point in order to comply with the various measurement and monitoring provisions of this Contract, if. in TXUGD's <br />sole judgement, adequate electronic gas measurement facilities are not already located at the Delivery Point. <br /> <br />(d) If new or additional facilities are required to effectuate the receipt or delivery of gas hereunder. Cuslomer <br />agrees to reimburse TXUGD. within thirty (30) days from the date of receipt ofTXUGO's invoice, for the cost of <br />any tap valves. measuring facilities and associated equipment and all labor and overhead expenses (including <br />applicable federal income tax imposed as a result of installation of such facilities), attributable to the installation of <br />such equipment. If the invoiced amount is not paid when due. interest on all unpaid amounts will accrue at the rate <br />of one and one-half percent (1-1/2%) per month, or the highest rate allowed by law, whichever is less. from the date <br />such amount is due TXUGO. IfTXUGO does not receive total reimbursement through the payment of such invoice <br /> <br />5 <br /> <br />Rev OS/25/01 Attach. to Rate Sch. 4221 <br /> <br />08 <br />