Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

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Effective Date: 04/05/2010, Docket: RP10-476-000, Status: Effective

Second Revised Sheet No. 187 Second Revised Sheet No. 187

Superseding: First Revised Sheet No. 187








Imbalances accruing on different contracts between a third party (Company) and

Transporter may be offset by netting and trading.


Imbalance netting and trading activity shall follow the steps outlined below.


34.1 To the extent the Company has multiple points at which an imbalance accrues,

the monthly imbalances held by a single legal entity shall be accumulated and netted within the

same location prior to applying the applicable index price as set forth in the provisions regarding

index prices in Section 27.2 of this Tariff and calculating the imbalance dollar valuation.


34.2 By the ninth (9th) business day of the month, Company may request that Transporter

post on its Internet Website the Company's dollar valued imbalances.


34.3 A Company may negotiate with other Companies to trade the existing dollar

imbalances. This trading will occur only between Companies (Transporter will

not be involved).


34.4 All Companies will have until the close of the 17th business day of the month

to complete dollar imbalance trading.


34.5 Companies must notify Transporter prior to the close of the 17th business day

via fax or e-mail of the dollars traded and the trading partners (all Companies

involved in the trade must notify Transporter of the intent and amount traded).


34.6 Imbalance netting and trading will be completed at no additional cost to the



34.7 After close of the 17th business day of the month, Transporter will calculate

the Company's final dollar imbalance. Any remaining dollar imbalances

net of trading will be subject to the applicable imbalance valuation provisions

outlined above and resolved in accordance with the provisions outlined in the Operator

Balancing Agreement Form of Service Agreement of this Tariff.


34.8 Any discrepancies between trading Company's imbalance trade notifications to

Transporter will result in the trade not being confirmed and the dollars

remaining as an imbalance to both Companies which will be subject to the

applicable imbalance valuation provisions outlined above.