Common use of MEASUREMENT AND TESTS Clause in Contracts

MEASUREMENT AND TESTS. The measurement and tests for quality of gas delivered hereunder shall be governed by the following: 9.1 The volume shall be measured at the Delivery Point(s) by orifice meters installed, maintained and operated by Buyer, and computations made in accordance with published procedures adopted as American National Standard, “Orifice Metering of Natural Gas,” published as ANSI/API 2530 as amended or revised from time to time. Buyer may, at its option, install an electronic flow recorder to record the static and differential pressures, flowing temperature and volume of such gas. 9.2 The unit of volume for purposes of measurement shall be one (1) cubic foot of gas at a temperature base of 60° Fahrenheit and at a pressure base of fourteen and sixty-five one-hundredths (14.65) pounds per square inch absolute. 9.3 The arithmetical average of the hourly temperatures recorded during each day, if available, and the factor for specific gravity according to the latest tests, applicable during each day shall be used to make proper computations of volumes hereunder. Only those gas volumes measured at pressures of 100 psig or greater shall be corrected for deviation from Bxxxx’x Law. Chart integration and volume computations shall be made as accurately as possible and within the accuracy prescribed by the manufacturer of the computing equipment used. 9.4 Temperature shall at Buyer’s option be determined by a recording thermometer continuously used and installed so as to record properly the temperature of the gas flowing through the meter. If a recording thermometer is not being utilized at such meter, the temperature shall be deemed to be 60° F. 9.5 The specific gravity of the gas purchased and sold hereunder shall be determined by Buyer, at its election, either by the use of a gravitometer of the Ranarex type or by the Gravity Balance Method in accordance with the official code of the Gas Processors Association, or by chromatographic analysis, or any other method acceptable to Buyer and Seller. 9.6 The average atmospheric (barometric) pressure shall be assumed to be 13.2 psia unless otherwise specified. 9.7 The total gross heating value of the individual wellhead gas streams and the GPM of each individual product contained therein shall be determined by performing a chromatographic analysis of the samples of the gas taken at each Delivery Point at such times as may be mutually agreed by Buyer and Seller, but not less often than once each six (6) months; provided, that if at any time, either party believes that the heating value of the gas may have changed, such party may call for a special test to be conducted at its expense after having given notice of the time of such test sufficiently in advance to permit convenient arrangements for a representative of the other party to be present. The MMBTUs removed due to product shrinkage will be calculated based on plant liquid products measurement converted to MMBTUs utilizing the constants contained in G.P.A. Publication No. 2145-93, as revised from time to time, and adjusted to 14.65 psia, plus adjustment for plant fuel usage determined by measurement and BTU determination of the gas so utilized. Physical constants for the hexanes and heavier hydrocarbons portion of hydrocarbon mixtures shall be assumed to be the same as the physical constants for hexane. The heat content per gallon of each liquid hydrocarbon shall be determined by multiplying the cubic feet per gallon of such liquid by the heat content per cubic foot thereof. A continuous sampling device shall be used to obtain a sample of the commingled stream of the plant products delivered each month to a product pipeline. A chromatographic analysis of such sample will be used to determine the gallons of each individual product so delivered. The specific gravity or flowing density of the liquid will be determined by equipment installed by Buyer or the operator of the products pipeline. 9.8 Tests for carbon dioxide, sulfur and hydrogen sulfide content of the gas delivered hereunder shall be made by approved standard methods from time to time as requested by any party hereto, but not less often than once each six (6) months. 9.9 All measuring equipment, housing, devices and materials shall be of standard manufacture and shall, with all related equipment, appliances and buildings, be installed, maintained, and furnished by Buyer at its expense in accordance with standards and specifications generally accepted in the industry. Seller may install and operate check-measuring equipment, which shall not interfere with the use of Buyer’s equipment. All testing equipment shall be of standard manufacture and shall be maintained, operated and furnished by Buyer at Buyer’s expense. 9.10 The accuracy of Buyer’s measuring equipment shall be verified by Buyer at reasonable intervals, but not less often than once each six (6) months. The accuracy of Buyer’s testing equipment shall be verified by Buyer at reasonable intervals according to the manufacturer’s specifications. Tests for quality of the gas may be made at the time of testing equipment, or at other times, but not less often than once each six (6) months. Notice of the time and nature of each test shall be given by Buyer to Seller sufficiently in advance to permit convenient arrangements for Seller’s representative to be present. Measuring and testing equipment shall be tested by reasonable means and methods determined by Buyer. Tests and adjustments shall be made in the presence of and observed by representatives of both Buyer and Seller, if present. If after proper notice Seller fails to have a representative present, Seller shall not have the right to dispute the accuracy of such tests. All tests shall be made at Buyer’s expense, except that Seller shall bear the expense of tests made at its request if the inaccuracy found is two percent (2%) or less. 9.11 If at any time any of the measuring or testing equipment is found to be out of service, or registering inaccurately in any percentage, it shall be adjusted at once to read accurately, within the limits prescribed by the manufacturer. If such equipment is out of service, or inaccurate by an amount exceeding two percent (2%) at a reading corresponding to the average rate of flow for the period since the last preceding test, the previous readings of such equipment shall be disregarded for any period definitely known or agreed upon, or if not so known or agreed upon, for a period of sixteen (16) days or one-half (1/2) of the elapsed time since the last test, whichever is shorter. The volume of gas delivered during such period shall be estimated by: (a) Using the data recorded by any check-measuring equipment if installed and accurately registering, or if not installed or registering accurately; (b) By correcting the error if the percentage of error is ascertainable by calibration, test or mathematical calculation, or if neither such method is feasible; (c) By estimating the quantity, or quality, delivered, based upon deliveries under similar conditions during a period when the equipment was registering accurately. No corrections shall be made for recorded inaccuracies of two percent (2%) or less. 9.12 Buyer and Seller shall have the right to inspect equipment installed or furnished by the other, and the charts and other measurement or testing data of the other, at all times during business hours; but the reading, calibration and adjustment of such equipment and changing of charts shall be done only by the party owning such equipment. Each party shall preserve all original test data, charts and other similar records, in such party’s possession for a period of at least two (2) years following the end of the calendar year in which such data, charts, and records were created.

MEASUREMENT AND TESTS. The measurement and tests for quality of gas received and delivered hereunder shall be governed by the following: 9.1 8.1 The volume shall be measured at the Delivery Point(s) by orifice meters installedwith linear charts, maintained 24-hour rotation, or other mutually agreeable measuring devices installed and operated by Buyeroperated, and computations made in accordance with published procedures adopted made, as prescribed by the American National Standard, “Orifice Metering of Natural Gas,” Petroleum Institute and published as ANSI/API 2530 Gas Measurement Committee Report No. 3, American Gas Association, as amended revised and reprinted in September 1969, including any appendices or revised from time to time. Buyer mayamendments thereto, at its option, install an electronic flow recorder to record the static and differential pressures, flowing temperature and volume of or such gasother method as may be mutually acceptable. 9.2 8.2 The unit of volume for purposes of measurement shall be one (1) cubic foot of gas at a temperature base of sixty degrees (60° °) Fahrenheit and at a pressure base of fourteen fifteen and sixtytwenty-five one-hundredths thousandths (14.6515.025) pounds per square inch absolute. 9.3 8.3 The arithmetical average of the hourly temperatures temperature recorded during each day, and if availablea recording gravitometer is installed, the hourly specific gravity recorded each day, the factors for the average hourly temperature and the factor for specific gravity according to the latest tests, test therefor and the correction for deviation from Bxxxx’x Law applicable during each day shall be used to make proper computations of volumes hereunder. Only those gas volumes measured at pressures of 100 psig or greater shall be corrected for deviation from Bxxxx’x Law. Chart integration and volume computations shall be made by the Party (or its agent) that owns the measurement facilities at the Points of Receipt and Points of Delivery as accurately as possible and within the accuracy prescribed by the manufacturer of the computing equipment used. 9.4 8.4 Temperature shall at Buyer’s option be determined by a twenty-four (24) hour continuously recording thermometer continuously used and installed so as to record properly the temperature of the gas flowing through the metermeters. If a recording thermometer The average temperature, to the nearest one degree (1°) Fahrenheit, obtained while gas is not being utilized at such meterdelivered, the temperature shall be deemed to be 60° F.the applicable flowing gas temperature for the twenty-four (24) hour period under consideration. 9.5 8.5 The specific gravity of the gas purchased and sold hereunder shall be determined by Buyer, at its election, either by the use of a gravitometer of the Ranarex type or by the Gravity Balance Method in accordance with the official code of the Gas Processors Association, or by chromatographic analysis, or any other method acceptable to Buyer and Seller. 9.6 The average atmospheric (barometric) pressure shall be assumed to be 13.2 psia unless otherwise specified. 9.7 The total gross heating value of the individual wellhead gas streams and the GPM of each individual product contained therein shall be determined by performing a chromatographic analysis of the samples of the gas taken at each Delivery Point at such times as may be mutually agreed by Buyer and Seller, but not less often than once each six (6) months; provided, that if at any time, either party believes that the heating value of the gas may have changed, such party may call for a special test to be conducted at its expense after having given notice of the time of such test sufficiently in advance to permit convenient arrangements for a representative of the other party to be present. The MMBTUs removed due to product shrinkage will be calculated based on plant liquid products measurement converted to MMBTUs utilizing the constants contained in G.P.A. Publication No. 2145-93, as revised from time to time, and adjusted to 14.65 psia, plus adjustment for plant fuel usage determined by measurement and BTU determination of the gas so utilized. Physical constants for the hexanes and heavier hydrocarbons portion of hydrocarbon mixtures shall be assumed to be the same as the physical constants for hexane. The heat content per gallon of each liquid hydrocarbon shall be determined by multiplying the cubic feet per gallon of such liquid by the heat content per cubic foot thereof. A continuous sampling device shall be used to obtain a sample of the commingled stream of the plant products delivered each month to a product pipeline. A chromatographic analysis of such sample will be used to determine the gallons of each individual product so delivered. The specific gravity or flowing density of the liquid will be determined by equipment installed by Buyer or the operator of the products pipeline. 9.8 Tests for carbon dioxide, sulfur and hydrogen sulfide content of the gas delivered hereunder shall be determined at each point of measurement by spot tests made with an instrument of standard manufacture acceptable to the parties or by a recording gravitometer or other mutually agreeable means. If spot tests are made, the specific gravity of the gas delivered hereunder shall be determined monthly or as frequently as is found necessary in practice to insure accurate measurement. 8.6 Adjustment for the effect of supercompressibility shall be determined by test or by mutual consent of the parties hereto according to the provisions of said Report No. 3, hereinabove identified for the average conditions of pressure, flowing temperature and specific gravity at which the gas was measured during the period under consideration and with the respective proportionate values for carbon dioxide and nitrogen fraction values and to obtain subsequent values of these components as may be required from time to time. 8.7 The BTU content of the gas shall be determined by using a continuous accumulator, a spot sample, a continuously recording calorimeter, or any other method in general use in the gas industry. Any recording calorimeter required shall be at the Point(s) of Delivery. 8.8 Tests to determine sulfur, hydrogen sulfide, oxygen, carbon dioxide, nitrogen and water content shall be made by approved standard methods from time to time as requested in general use by the gas industry. Such tests shall be made at the request of any party hereto, but not less often than once each six (6) months. 9.9 8.9 All new measuring and testing equipment, housing, housing devices and materials shall be of standard manufacture and type and shall, with all related equipment, appliances and buildings, be installed, maintainedmaintained and operated or caused to be installed, maintained and furnished operated by Buyer Gatherer at its expense in accordance with standards the Points of Receipt and specifications generally accepted in by Producer, Gatherer, or such other third persons owning or controlling same at the industryPoints of Delivery. Seller Either Party may install and operate check-check measuring and testing equipment, which shall not interfere with the use of Buyer’s equipment. All testing equipment shall be of standard manufacture and shall be maintained, operated and furnished by Buyer the Party responsible for measurement at Buyer’s expensethe point. 9.10 8.10 The accuracy of Buyer’s the measuring equipment shall be verified by Buyer at reasonable intervals, but not less often than once each six (6) months. The accuracy of Buyer’s and testing equipment shall be verified by Buyer at reasonable intervals according to the manufacturer’s specificationsleast once each month and at other times upon request of Producer or Gatherer. Tests for quality of the gas may be made at the time times of testing equipment, equipment or at other times, but not less often than once each six (6) months. Notice Notices of the time and nature of each test shall be given by Buyer to Seller the measuring Party sufficiently in advance to permit convenient arrangements arrangement for Seller’s the witnessing Party to have a representative to be present. Measuring and testing equipment shall be tested by reasonable means and methods determined approved by Buyerboth Producer and Gatherer (which approval shall not be unreasonably withheld). Tests and adjustments shall be made in the presence of and observed by representatives of both Buyer and SellerParties, if present. If after proper notice Seller notice, Producer or Gatherer fails to have a representative present, Seller the results of the tests shall not have nevertheless be considered accurate until the right to dispute the accuracy of such testsnext tests are made. All regular monthly tests of measuring equipment shall be made at Buyer’s expense, except that Seller shall bear the expense of the owner of same. All tests made at its the special request if of a Party shall be made at the inaccuracy found is two percent (2%) or lessexpense of the Party requesting same. 9.11 8.11 If at any time any of the measuring or testing equipment is found to be out of service, service or registering inaccurately in any percentage, it shall be adjusted at once to read accurately, accurately within the limits limit prescribed by the manufacturer. If such equipment is out of service, service or inaccurate by an amount exceeding two percent (2%) at a any reading corresponding to or upon any test, registration thereof and any payment based thereon shall be corrected at the average rate of flow for the period since the last preceding test, the previous readings of such equipment shall be disregarded inaccuracy for any period definitely known or agreed which the Parties agree upon, or and if the Parties cannot so known or agreed uponagree, then for a period of sixteen (16) days or extending back one-half (1/2) of the time elapsed time since the date of the last testcalibration, whichever is shorternot exceeding, however, sixteen (16) days. The volume of gas delivered received during such period shall be estimated by: estimated: (ai) Using by using the data recorded by any check-check measuring equipment if installed and arid accurately registering; or, or if not installed or if registering accurately; inaccurately, (bii) By by correcting the error if the percentage of error is ascertainable by calibration, test or mathematical calculation; or, or if neither such method is feasible; , (ciii) By by estimating the quantity, or quality, delivered, quantity delivered based upon deliveries under similar conditions during a period when the equipment was registering accurately. No corrections adjustment shall be made for recorded inaccuracies of two percent (2%) or less. 9.12 Buyer and Seller 8.12 Each Party hereto shall have the right to inspect equipment installed or furnished by the other, other Party or third parties and the charts and other measurement or testing data of the other, all such parties at all times during business hours; but the reading, calibration and adjustment of such equipment and changing of charts shall be done only by the party owning such equipmentParty installing and furnishing the same. Each party Party hereto shall preserve all original test data, charts and other similar records, records in such partyParty’s possession for a period of at least two twenty-four (224) years following the end of the calendar year in which such data, charts, and records were createdmonths.

MEASUREMENT AND TESTS. The measurement and tests for quality of gas delivered hereunder shall be governed by the following: 9.1 The volume Buyer, at its sole expense, shall install and maintain all measurement facilities located at the Receipt Point(s). Such facilities shall be measured at constructed in compliance with the Delivery Point(s) by orifice meters installedrequirements prescribed in Gas Measurement Committee Report No. 3 of the American Gas Association approved standards of measurement including the appendix thereto, maintained and operated by Buyer, and computations made in accordance with published procedures adopted as American National Standard, “Orifice Metering of Natural Gas,” published as ANSI/API 2530 as such report may be amended or revised from time to time. Buyer may, at its option, install an electronic flow recorder to record the static and differential pressures, flowing temperature and volume of such gas. 9.2 The unit of volume for purposes of measurement shall be one (1) standard cubic foot of gas at a temperature base of sixty (60° ) degrees Fahrenheit and at a pressure base of fourteen and sixty-five one-hundredths (14.65) pounds per square inch absolutepsia. 9.3 The arithmetical average of the hourly temperatures temperature recorded during each day, if available, and the factor for specific gravity according to the latest tests, applicable during each day shall be used to make proper computations of volumes hereunder. Only those gas volumes measured at pressures of 100 psig or greater shall be corrected for deviation from Bxxxx’x Law. Chart integration and volume Volume computations shall be made as accurately as possible and within the accuracy prescribed by the manufacturer of the computing equipment used. 9.4 Temperature Specific gravity shall at Buyer’s option be determined through gas analysis calculations or by spot tests made with a recording thermometer continuously used and installed so as standard type of specific gravity instrument which is acceptable to record properly the temperature of the gas flowing through the meter. If a recording thermometer is not being utilized at such meter, the temperature shall be deemed to be 60° F.each party hereto. 9.5 The specific gravity of the gas purchased and sold hereunder shall be determined by Buyer, at its election, either by the use of a gravitometer of the Ranarex type or by the Gravity Balance Method in accordance with the official code of the Gas Processors Association, or by chromatographic analysis, or any other method acceptable to Buyer and Seller. 9.6 The average atmospheric (barometric) pressure shall be assumed to be 13.2 psia unless otherwise specified. 9.7 The total gross heating value of the individual wellhead gas streams and the GPM of each individual product contained therein shall be determined by performing a chromatographic analysis of the samples of the gas taken at each Delivery Point at such times as may be mutually agreed by Buyer and Seller, but not less often than once each six (6) months; provided, that if at any time, either party believes that the heating value of the gas may have changed, such party may call for a special test to be conducted at its expense after having given notice of the time of such test sufficiently in advance to permit convenient arrangements for a representative of the other party to be present. The MMBTUs removed due to product shrinkage will be calculated based on plant liquid products measurement converted to MMBTUs utilizing the constants contained in G.P.A. Publication No. 2145-93, as revised from time to time, and adjusted to 14.65 psia, plus adjustment for plant fuel usage determined by measurement and BTU determination of the gas so utilized. Physical constants for the hexanes and heavier hydrocarbons portion of hydrocarbon mixtures shall be assumed to be the same as the physical constants for hexane. The heat content per gallon of each liquid hydrocarbon shall be determined by multiplying Buyer on quarterly intervals by taking samples of the cubic feet per gallon of such liquid by gas at the heat Receipt Point(s) and having the British thermal unit content per cubic foot thereof. A continuous sampling device determined by means of an approved method of general use in the gas industry. 9.6 Conversion to MMBtu shall be used to obtain made by multiplying the volume of gas as otherwise determined hereunder by a sample fraction of the commingled stream denominator of which is 1,000 and the plant products delivered each month to a product pipeline. A chromatographic analysis numerator of such sample will be used to determine which is the gallons of each individual product so delivered. The specific gravity or flowing density of the liquid will be determined by equipment installed by Buyer or the operator of the products pipeline. 9.8 Tests for carbon dioxide, sulfur and hydrogen sulfide gross heat content of the gas delivered hereunder per cubic foot in BTU as determined pursuant to Paragraph 9.5 above. 9.7 Tests to determine sulfur, hydrogen sulfide, oxygen, carbon dioxide, nitrogen and water content shall be made by approved standard methods from time to time as requested in general use by any party hereto, but not less often than once each six (6) monthsthe gas industry. 9.9 9.8 All measuring equipment, housing, devices and testing equipment and materials shall be of standard manufacture and type approved by both parties and shall, with all related equipment, equipment and appliances and buildings, be installed, maintained, operated and furnished maintained by Buyer at its expense in accordance with standards and specifications generally accepted in the industryBuyer. Seller may may, at Seller’s expense, install and operate check-check measuring and testing equipment, which shall not interfere with the use of Buyer’s equipment. All testing equipment shall be of standard manufacture and shall be maintained, operated and furnished by Buyer at Buyer’s expense. 9.10 9.9 The accuracy of Buyer’s measuring equipment shall be verified by Buyer at reasonable intervals, but not less often than once each six (6) months. The accuracy of Buyer’s and testing equipment shall be verified by Buyer on semi-annual intervals and at other times upon reasonable intervals according to the manufacturer’s specificationsrequest of either party. Tests for quality of the gas may be made at the time of testing equipment, the equipment or at other times, but not less often than once each six (6) months. Notice of the time and nature of each test shall be given by Buyer to Seller hereunder sufficiently in advance to permit convenient arrangements arrangement for Seller’s each party hereto to have a representative to be present. Measuring and testing equipment shall be tested by reasonable means and methods determined by Buyer. Tests and adjustments shall be made in general use in the presence of and observed by representatives of both Buyer and Seller, if presentindustry. If after proper notice Seller notice, either party fails to have a representative present, Seller the results of the tests shall not have nevertheless be considered accurate until the right to dispute the accuracy of such testsnext tests are made. All tests of measuring equipment shall be made at Buyer’s expense, except that Seller or Buyer shall bear the expense of extra tests made at its request if the inaccuracy found is two percent (2%) or lessrequest. 9.11 9.10 If at any time any of the measuring or testing equipment is found to be out of service, service or registering inaccurately in any percentage, it shall be adjusted at once to read accurately, accurately within the limits prescribed by the manufacturer. If such equipment is out of service, service or inaccurate by an amount exceeding two percent (2%) at a reading corresponding to the average rate of flow for the period since the last preceding test, the previous readings of such equipment shall be disregarded for any period definitely known or agreed upon, or if not so known or agreed upon, for a period of sixteen (16) days or one-one half (1/2) of the elapsed time since the last test, whichever is shorter. The volume of gas delivered during such period shall be estimated by: by (ai) Using using the data recorded reordered by any check-check measuring equipment if installed and accurately registering, or if not installed or registering accurately; , (bii) By by correcting the error if the percentage of error is ascertainable by calibration, test or mathematical calculation, or if neither such method is feasible; , (ciii) By by estimating the quantity, or quality, delivered, quantity delivered based upon deliveries under similar conditions during a period when the equipment was registering accurately. No corrections adjustment shall be made for recorded inaccuracies of two percent (2%) or less. 9.12 Buyer and Seller 9.11 Either party hereto shall have the right to inspect equipment installed or furnished by the other, other and the charts and other measurement or testing data of the other, other at all times during business hours; but the reading, calibration and adjustment of such equipment and changing of charts shall be done only by the party owning such equipmentBuyer. Each party shall preserve all original test data, charts and other similar records, records in such party’s possession for a period of at least two (2) years following the end of the calendar year in which such data, charts, and records were createdyears.

MEASUREMENT AND TESTS. The 6.1 PGT shall perform the actual measurements each month during the term hereof in accordance with the provisions set forth in Paragraphs 4 and 5 of the General Terms and Conditions of PGT's FERC Gas Tariff, First Revised Volume 1-A as may be revised from time to time. For the purposes of this Agreement, PGT shall perform such measurement and tests for quality of gas delivered hereunder shall be governed by the followingas follows: 9.1 a. The volume of Gas delivered under this Agreement shall be measured at the Delivery Point(s) by orifice meters, or by other industry accepted meters installed, maintained and operated by Buyer, and computations made in accordance with published procedures adopted PGT or its designee as American National Standard, “Orifice Metering of Natural Gas,” published as ANSI/API 2530 as amended or revised from time mutually agreed to time. Buyer may, at its option, install an electronic flow recorder to record by the static and differential pressures, flowing temperature and volume of such gasParties. 9.2 b. The unit of volume for purposes of measurement shall be one (1) cubic foot Cubic Foot of gas Gas at a temperature base of 60° sixty degrees Fahrenheit (60 degrees F) and at a pressure base of fourteen and sixtyseventy-five one-three hundredths (14.6514.73) pounds per square inch absoluteabsolute (psia). 9.3 c. Relative density, carbon dioxide, nitrogen and Heating Value, shall be continuously measured and recorded using Gas chromatographs, calorimeters, densitometers, or other means acceptable in the Gas industry or as mutually agreed to by the Parties. Determination of Heating Value and relative density by compositional analysis shall comply with the methods specified in the American Society for Testing and Materials, ASTM D 3588, as may be revised from time to time. The arithmetical average physical properties of the hourly temperatures recorded during each day, if available, constituent Gases used to calculate Heating Value and the factor for specific gravity according to the latest tests, applicable during each day relative density shall be used taken from the Gas Processors Association Bulletin GPA 2145, as may be revised from time to make proper computations of volumes hereunder. Only those gas volumes measured at pressures of 100 psig or greater time. d. Gas compressibility shall be corrected for deviation from Bxxxx’x Law. Chart integration calculated at the flowing pressure and volume computations shall be made as accurately as possible and within the accuracy prescribed by the manufacturer of the computing equipment used. 9.4 Temperature shall at Buyer’s option be determined by a recording thermometer continuously used and installed so as temperature under which Gas is delivered to record properly the temperature of the gas flowing through the meter. If a recording thermometer is not being utilized at such meter, the temperature shall be deemed to be 60° F. 9.5 The specific gravity of the gas purchased and sold hereunder shall be determined by Buyer, at its election, either by the use of a gravitometer of the Ranarex type or by the Gravity Balance Method PG&E in accordance with the official code of recommendations contained in the Gas Processors AssociationAmerican Society for Testing and Materials, or by chromatographic analysisASTM 3588, or any other method acceptable as may be revised from time to Buyer and Sellertime. 9.6 e. The average atmospheric (barometric) pressure shall be assumed to be 13.2 12.67 psia unless otherwise specified. 9.7 The total gross heating value of the individual wellhead gas streams and the GPM of each individual product contained therein at measurement point. Corrections for other elevations shall be determined by performing a chromatographic analysis using an industry acceptable equation or by making measurements at the applicable point. 6.2 Routine tests for gas quality will be conducted in accordance with Paragraph 3.2c of the samples General Terms and Conditions of the gas taken at each Delivery Point at such times PGT's FERC Gas Tariff, First Revised Volume No. 1-A as may be mutually agreed by Buyer and Seller, but not less often than once each six (6) months; provided, that if at any time, either party believes that the heating value of the gas may have changed, such party may call for a special test to be conducted at its expense after having given notice of the time of such test sufficiently in advance to permit convenient arrangements for a representative of the other party to be present. The MMBTUs removed due to product shrinkage will be calculated based on plant liquid products measurement converted to MMBTUs utilizing the constants contained in G.P.A. Publication No. 2145-93, as revised from time to time. Additional tests for total sulfur, and adjusted to 14.65 psiaPCBs, plus adjustment for plant fuel usage determined by measurement and BTU determination of the gas so utilized. Physical constants for the hexanes and heavier hydrocarbons portion of hydrocarbon mixtures shall be assumed to be the same as the physical constants for hexane. The heat content per gallon of each liquid hydrocarbon shall be determined by multiplying the cubic feet per gallon of such liquid by the heat content per cubic foot thereof. A continuous sampling device shall be used to obtain a sample of the commingled stream of the plant products delivered each month to a product pipeline. A chromatographic analysis of such sample will be used to determine the gallons of each individual product so delivered. The specific gravity or flowing density of the liquid will be determined by equipment installed by Buyer or the operator of the products pipeline. 9.8 Tests for carbon dioxide, sulfur and hydrogen sulfide content of the gas Gas delivered hereunder shall be made by approved standard methods performed at the request of either Party from time to time as requested by any party hereto, but not less often than once each six (6) months. 9.9 All measuring equipment, housing, devices and materials shall be of standard manufacture and shall, with all related equipment, appliances and buildings, be installed, maintained, and furnished by Buyer at its expense in accordance with standards and specifications generally accepted in the industry. Seller may install and operate check-measuring equipment, which shall not interfere with the use of Buyer’s equipment. All testing equipment shall be of standard manufacture and shall be maintained, operated and furnished by Buyer at Buyer’s expense. 9.10 The accuracy of Buyer’s measuring equipment shall be verified by Buyer at reasonable intervals, but not less often limited to no more than once each six one (61) months. The accuracy of Buyer’s testing equipment shall be verified by Buyer at reasonable intervals according to the manufacturer’s specifications. Tests for quality of the gas may be made at the time of testing equipment, or at other times, but not less often than once each six request every thirty (6) months. Notice of the time and nature of each test shall be given by Buyer to Seller sufficiently in advance to permit convenient arrangements for Seller’s representative to be present. Measuring and testing equipment shall be tested by reasonable means and methods determined by Buyer. Tests and adjustments shall be made in the presence of and observed by representatives of both Buyer and Seller, if present. If after proper notice Seller fails to have a representative present, Seller shall not have the right to dispute the accuracy of such tests. All tests shall be made at Buyer’s expense, except that Seller shall bear the expense of tests made at its request if the inaccuracy found is two percent (2%) or less. 9.11 If at any time any of the measuring or testing equipment is found to be out of service, or registering inaccurately in any percentage, it shall be adjusted at once to read accurately, within the limits prescribed by the manufacturer. If such equipment is out of service, or inaccurate by an amount exceeding two percent (2%) at a reading corresponding to the average rate of flow for the period since the last preceding test, the previous readings of such equipment shall be disregarded for any period definitely known or agreed upon, or if not so known or agreed upon, for a period of sixteen (16) days or one-half (1/2) of the elapsed time since the last test, whichever is shorter. The volume of gas delivered during such period shall be estimated by: (a) Using the data recorded by any check-measuring equipment if installed and accurately registering, or if not installed or registering accurately; (b) By correcting the error if the percentage of error is ascertainable by calibration, test or mathematical calculation, or if neither such method is feasible; (c) By estimating the quantity, or quality, delivered, based upon deliveries under similar conditions during a period when the equipment was registering accurately. No corrections shall be made for recorded inaccuracies of two percent (2%) or less. 9.12 Buyer and Seller shall have the right to inspect equipment installed or furnished by the other, and the charts and other measurement or testing data of the other, at all times during business hours; but the reading, calibration and adjustment of such equipment and changing of charts shall be done only by the party owning such equipment. Each party shall preserve all original test data, charts and other similar records, in such party’s possession for a period of at least two (2) years following the end of the calendar year in which such data, charts, and records were created.30)