NuStar Energy L.P. - Quarter Report: 2011 June (Form 10-Q)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_________________________________________

FORM 10-Q

_________________________________________

(Mark One)



x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended June 30, 2011



o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from _______ to _______

Commission File Number 1-16417

_________________________________________

NUSTAR ENERGY L.P.

(Exact name of registrant as specified in its charter)

_________________________________________



Delaware		74-2956831
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

2330 North Loop 1604 West San Antonio, Texas		78248
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code (210) 918-2000

_________________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule12b-2 of the Exchange Act:



Large accelerated filer	x	Accelerated filer	£

Non-accelerated filer	o (Do not check if a smaller reporting company)	Smaller reporting company	£

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

The number of common units outstanding as of July 31, 2011 was 64,610,549.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

FORM 10-Q

TABLE OF CONTENTS



PART I – FINANCIAL INFORMATION

Item 1.	Financial Statements:

	Consolidated Balance Sheets as of June 30, 2011 and December 31, 2010	3

	Consolidated Statements of Income for the Three and Six Months Ended June 30, 2011 and 2010	4

	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2011 and 2010	5

	Condensed Notes to Consolidated Financial Statements	6

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	28

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	42

Item 4.	Controls and Procedures	46

PART II – OTHER INFORMATION

Item 6.	Exhibits	47

SIGNATURES		48

Table of Contents

PART I – FINANCIAL INFORMATION


Item 1.	Financial Statements

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Thousands of Dollars, Except Unit Data)



	June 30, 2011			December 31, 2010
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	128,876		$	181,121
Accounts receivable, net of allowance for doubtful accounts of $1,458 and $1,457 as of June 30, 2011 and December 31, 2010, respectively	457,410			302,053
Inventories	667,908			413,537
Other current assets	61,162			42,796
Total current assets	1,315,356			939,507
Property, plant and equipment, at cost	4,274,702			4,021,319
Accumulated depreciation and amortization	(912,850		)	(833,862		)
Property, plant and equipment, net	3,361,852			3,187,457
Intangible assets, net	46,305			43,033
Goodwill	848,949			813,270
Investment in joint venture	67,272			69,603
Deferred income tax asset	10,176			8,138
Other long-term assets, net	246,798			325,385
Total assets	$	5,896,708		$	5,386,393
Liabilities and Partners’ Equity
Current liabilities:
Current portion of long-term debt	$	255,984		$	832
Accounts payable	509,190			282,382
Payable to related party	15,492			10,345
Accrued interest payable	29,719			29,706
Accrued liabilities	59,323			57,953
Taxes other than income tax	14,029			10,718
Income tax payable	1,590			1,293
Total current liabilities	885,327			393,229
Long-term debt, less current portion	2,186,260			2,136,248
Long-term payable to related party	11,411			10,088
Deferred income tax liability	36,407			29,565
Other long-term liabilities	118,337			114,563
Commitments and contingencies (Note 5)
Partners’ equity:
Limited partners (64,610,549 common units outstanding as of June 30, 2011 and December 31, 2010)	2,561,460			2,598,873
General partner	56,609			57,327
Accumulated other comprehensive income	26,152			46,500
Total NuStar Energy L.P. partners' equity	2,644,221			2,702,700
Noncontrolling interest	14,745			—
Total partners’ equity	2,658,966			2,702,700
Total liabilities and partners’ equity	$	5,896,708		$	5,386,393

See Condensed Notes to Consolidated Financial Statements.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)



	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Revenues:
Service revenues:
Third parties	$	199,208		$	195,087		$	397,471		$	384,382
Related party	407			—			537			—
Total service revenues	199,615			195,087			398,008			384,382
Product sales	1,389,569			929,854			2,425,792			1,686,088
Total revenues	1,589,184			1,124,941			2,823,800			2,070,470
Costs and expenses:
Cost of product sales	1,269,448			842,588			2,261,815			1,561,809
Operating expenses:
Third parties	97,825			85,868			182,955			173,361
Related party	36,801			34,075			71,910			67,919
Total operating expenses	134,626			119,943			254,865			241,280
General and administrative expenses:
Third parties	10,084			8,875			19,119			18,906
Related party	16,035			13,320			32,983			30,558
Total general and administrative expenses	26,119			22,195			52,102			49,464
Depreciation and amortization expense	41,640			38,185			81,936			76,114
Total costs and expenses	1,471,833			1,022,911			2,650,718			1,928,667
Operating income	117,351			102,030			173,082			141,803
Equity in earnings of joint venture	2,010			2,102			4,398			5,117
Interest expense, net	(20,622		)	(18,890		)	(41,079		)	(37,476		)
Other (expense) income, net	(967		)	14,816			(6,466		)	15,117
Income before income tax expense	97,772			100,058			129,935			124,561
Income tax expense	5,167			636			8,814			5,436
Net income	92,605			99,422			121,121			119,125
Less net income attributable to noncontrolling interest	6			—			20			—
Net income attributable to NuStar Energy L.P.	$	92,599		$	99,422		$	121,101		$	119,125
Net income per unit applicable to limited partners (Note 11)	$	1.27		$	1.43		$	1.57		$	1.64
Weighted-average limited partner units outstanding	64,610,549			62,289,670			64,610,549			61,255,853

See Condensed Notes to Consolidated Financial Statements.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited, Thousands of Dollars)



	Six Months Ended June 30,
	2011			2010
Cash Flows from Operating Activities:
Net income	$	121,121		$	119,125
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	81,936			76,114
Amortization of debt related items	(4,690		)	(3,868		)
Gain on sale or disposition of assets, including insurance recoveries	(236		)	(12,812		)
Deferred income tax expense (benefit)	1,487			(2,301		)
Equity in earnings of joint venture	(4,398		)	(5,117		)
Distributions of equity in earnings of joint venture	6,729			5,050
Changes in current assets and current liabilities (Note 12)	(201,736		)	(162,015		)
Other, net	1,611			(523		)
Net cash provided by operating activities	1,824			13,653
Cash Flows from Investing Activities:
Reliability capital expenditures	(20,573		)	(21,262		)
Strategic capital expenditures	(135,821		)	(96,423		)
Acquisitions	(100,448		)	(43,026		)
Proceeds from insurance recoveries	—			13,500
Investment in other long-term assets	(5,580		)	(3,224		)
Proceeds from sale or disposition of assets	289			157
Net cash used in investing activities	(262,133		)	(150,278		)
Cash Flows from Financing Activities:
Proceeds from long-term debt borrowings	585,764			671,355
Proceeds from short-term debt borrowings	31,600			175,791
Long-term debt repayments	(225,993		)	(636,633		)
Short-term debt repayments	(31,600		)	(195,791		)
Proceeds from issuance of common units, net of issuance costs	—			240,297
Contributions from general partner	—			5,078
Distributions to unitholders and general partner	(159,232		)	(146,784		)
Proceeds from termination of interest rate swaps	9,112			—
Other, net	(2,811		)	(5,511		)
Net cash provided by financing activities	206,840			107,802
Effect of foreign exchange rate changes on cash	1,224			1,371
Net decrease in cash and cash equivalents	(52,245		)	(27,452		)
Cash and cash equivalents as of the beginning of the period	181,121			62,006
Cash and cash equivalents as of the end of the period	$	128,876		$	34,554

See Condensed Notes to Consolidated Financial Statements.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION AND BASIS OF PRESENTATION

Organization

NuStar Energy L.P. (NuStar Energy) (NYSE: NS) is engaged in the terminalling and storage of petroleum products, the transportation of petroleum products and anhydrous ammonia, and petroleum refining and marketing. Unless otherwise indicated, the terms “NuStar Energy,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. NuStar GP Holdings, LLC (NuStar GP Holdings) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns a 17.5% total interest in us as of June 30, 2011.

We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). We have three business segments: storage, transportation, and asphalt and fuels marketing.

Basis of Presentation

These unaudited consolidated financial statements include the accounts of the Partnership and subsidiaries in which the Partnership has a controlling interest. Noncontrolling interests are separately disclosed on the consolidated balance sheets and consolidated statements of income. Intercompany balances and transactions have been eliminated in consolidation. We account for investments in 50% or less-owned entities using the equity method.

These unaudited consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (GAAP) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, and all disclosures are adequate. All such adjustments are of a normal recurring nature unless disclosed otherwise. Financial information for the three and six months ended June 30, 2011 and 2010 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited consolidated financial statements. Operating results for the three and six months ended June 30, 2011 are not necessarily indicative of the results that may be expected for the year ending December 31, 2011. The consolidated balance sheet as of December 31, 2010 has been derived from the audited consolidated financial statements as of that date. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2010.

Reclassifications

Certain previously reported amounts in the 2010 consolidated financial statements have been reclassified to conform to the 2011 presentation.

Acquisitions

On April 19, 2011, we purchased certain refining and storage assets, inventory and other working capital items from AGE Refining, Inc. for $62.0 million, including the assumption of certain environmental liabilities. The assets consist of a 14,500 barrel per day refinery in San Antonio, Texas (the San Antonio Refinery) and 200,000 barrels of storage capacity in Elmendorf, Texas. The purchase price has been preliminarily allocated based on the estimated fair values of the individual assets acquired and liabilities assumed at the date of acquisition, pending completion of an independent appraisal and other evaluations. The consolidated statements of income include the results of operations for our acquisition of the San Antonio Refinery and related storage assets commencing on April 19, 2011.

On February 9, 2011, we acquired 75% of the outstanding capital of a Turkish company, which owns two terminals in Mersin, Turkey, with an aggregate 1.3 million barrels of storage capacity, for approximately $57.3 million (the Turkey Acquisition). Both terminals are connected via pipelines to an offshore platform located approximately three miles off the Mediterranean Sea coast. The purchase price has been preliminarily allocated based on the estimated fair values of the individual assets acquired, liabilities assumed and noncontrolling interest at the date of acquisition. The purchase price allocation is pending completion of an independent appraisal and other evaluations. The consolidated statements of income include the results of operations for the Turkey Acquisition commencing on February 9, 2011, with 25% accounted for as a noncontrolling interest.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

2. NEW ACCOUNTING PRONOUNCEMENTS

Other Comprehensive Income

In June 2011, the Financial Accounting Standards Board (FASB) amended the disclosure requirements for the presentation of comprehensive income. The amended requirements eliminate the option to present components of other comprehensive income (OCI) as part of the statement of changes in equity. Under the amended requirements, all changes in OCI are to be presented either in a single continuous statement of comprehensive income or in two separate but consecutive financial statements. The changes are effective for fiscal years and interim periods beginning after December 15, 2011, and retrospective application is required. Accordingly, we will adopt these provisions January 1, 2012. These amendments only affect financial statement presentation and will not impact our financial position or results of operations.

Fair Value Measurements

In May 2011, the FASB issued amended guidance and disclosure requirements for fair value measurements. The new guidance results in a consistent definition of fair value and common requirements for measurement of and disclosure about fair value between GAAP and International Financial Reporting Standards. These changes are effective for interim and annual periods beginning on or after December 15, 2011, and early adoption is not permitted. Accordingly, we will adopt these provisions January 1, 2012, and we do not expect the amended guidance to have a material impact on our financial position, results of operations or disclosures.

3. INVENTORIES

Inventories consisted of the following:



	June 30, 2011		December 31, 2010
	(Thousands of Dollars)
Crude oil	$	195,509	$	122,945
Finished products	463,101		281,197
Materials and supplies	9,298		9,395
Total	$	667,908	$	413,537

4. DEBT

Revolving Credit Agreement

During the six months ended June 30, 2011, we borrowed an aggregate $520.0 million under our $1.2 billion five-year revolving credit agreement (the 2007 Revolving Credit Agreement) to fund a portion of our capital expenditures and working capital requirements. Additionally, we repaid $226.0 million during the six months ended June 30, 2011. The 2007 Revolving Credit Agreement bears interest based on either an alternative base rate or a LIBOR-based rate. As of June 30, 2011, our weighted average borrowing interest rate was 0.9%, and we had $429.4 million available for borrowing under the 2007 Revolving Credit Agreement. Due to a covenant in our 2007 Revolving Credit Agreement that requires us to maintain, as of the end of each four consecutive fiscal quarters, a consolidated debt coverage ratio not to exceed 5.00-to-1.00, we may not be able to borrow the maximum available amount. On March 7, 2011, we amended the 2007 Revolving Credit Agreement to exclude unused proceeds from the Gulf Opportunity Zone bond issuances from total indebtedness in the calculation of the consolidated debt coverage ratio. As of June 30, 2011, our consolidated debt coverage ratio was 4.3x.

Gulf Opportunity Zone Revenue Bonds

The Parish of St. James, Louisiana issued three separate series of tax exempt revenue bonds in 2010 (2010 GoZone Bonds) associated with our St. James terminal expansion pursuant to the Gulf Opportunity Zone Act of 2005. The interest rate on these bonds is based on a weekly tax-exempt bond market interest rate, and interest is paid monthly. The interest rate was 0.1% as of June 30, 2011. Following the issuance, the proceeds were deposited with a trustee and will be disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansion. The amount remaining in trust related to the 2010 GoZone Bonds is included in “Other long-term assets, net,” and the amount of bonds issued is included in “Long-term debt, less current portion” in our consolidated balance sheets. For the six months ended June 30, 2011, we received net proceeds of $65.8 million from the 2010 GoZone Bonds. As of June 30, 2011, the amount remaining in trust totaled $139.6 million.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Lines of Credit

As of June 30, 2011, we had one short-term line of credit with an uncommitted borrowing capacity of up to $20.0 million. We had no outstanding borrowings on this line of credit as of June 30, 2011. During the six months ended June 30, 2011, we borrowed and repaid $31.6 million related to this line of credit.

5. COMMITMENTS AND CONTINGENCIES

Contingencies

We have contingent liabilities resulting from various litigation, claims and commitments, the most significant of which are discussed below. We record accruals for loss contingencies when losses are considered probable and can be reasonably estimated. Legal fees associated with defending the Partnership in legal matters are expensed as incurred. As of June 30, 2011, we have accrued $75.6 million for contingent losses. The amount that will ultimately be paid related to these matters may differ from the amounts accrued, and the timing of such payments is uncertain.

Grace Energy Corporation Matter. In 1997, Grace Energy Corporation (Grace Energy) sued subsidiaries of Kaneb Pipeline Partners, L.P. (KPP) and Kaneb Services LLC (KSL and collectively with KPP and their respective subsidiaries, Kaneb) in Texas state court. We acquired Kaneb on July 1, 2005. The complaint sought recovery of the cost of remediation of fuel leaks in the 1970s from a pipeline that had once connected a former Grace Energy terminal with Otis Air Force Base in Massachusetts (Otis AFB). Grace Energy alleges the Otis AFB pipeline and related environmental liabilities had been transferred in 1978 to an entity that was part of Kaneb's acquisition of Support Terminal Services, Inc. and its subsidiaries from Grace Energy in 1993. Kaneb contends that it did not acquire the Otis AFB pipeline and never assumed any responsibility for any associated environmental damage.

In 2000, the court entered final judgment that: (i) Grace Energy could not recover its own remediation costs of $3.5 million, (ii) Kaneb owned the Otis AFB pipeline and its related environmental liabilities and (iii) Grace Energy was awarded $1.8 million in attorney costs. Both Kaneb and Grace Energy appealed the final judgment of the trial court to the Texas Court of Appeals in Dallas. In 2001, Grace Energy filed a petition in bankruptcy, which created an automatic stay of actions against Grace Energy. In September 2008, Grace Energy filed its Joint Plan of Reorganization and Disclosure Statement.

The Otis AFB is a part of a Superfund Site pursuant to the Comprehensive Environmental Response Compensation and Liability Act (CERCLA). The site contains a number of groundwater contamination plumes, two of which are allegedly associated with the Otis AFB pipeline. Relying on the final judgment of the Texas state court assigning ownership of the Otis AFB pipeline to Kaneb, the United States Department of Justice (the DOJ) advised Kaneb in 2001 that it intends to seek reimbursement from Kaneb for the remediation costs associated with the two plumes. In November 2008, the DOJ forwarded information to us indicating that the past and estimated future remediation expenses associated with one plume are $71.9 million. The DOJ has indicated that they will not seek recovery of remediation costs for the second plume. The DOJ has not filed a lawsuit against us related to this matter, and we have not made any payments toward costs incurred by the DOJ. We are currently in settlement discussions with other potentially responsible parties and the DOJ, and a change in our estimate of this liability may occur in the near term. However, any settlement agreement that is reached must be approved by multiple parties and requires the approval of the bankruptcy court and the federal district court. We cannot currently estimate when or if a settlement will be finalized.

Eres Matter. In August 2008, Eres N.V. (Eres) forwarded a demand for arbitration to CITGO Asphalt Refining Company (CARCO), CITGO Petroleum Corporation (CITGO), NuStar Asphalt Refining, LLC (NuStar Asphalt) and NuStar Marketing LLC (NuStar Marketing, and together with CARCO, CITGO and NuStar Asphalt, the Defendants) contending that the Defendants are in breach of a tanker voyage charter party agreement, dated November 2004, between Eres and CARCO (the Charter Agreement). The Charter Agreement provides for CARCO's use of Eres' vessels for the shipment of asphalt. Eres contends that NuStar Asphalt and/or NuStar Marketing (together, the NuStar Entities) assumed the Charter Agreement when NuStar Asphalt purchased the CARCO assets, and that the Defendants have failed to perform under the Charter Agreement since January 1, 2008. Eres has valued its damages for the alleged breach of contract claim at approximately $78.1 million. Pursuant to a May 2010 ruling by the United States District Court for the Southern District of Texas, the NuStar Entities were found to have assumed the Charter Agreement from CARCO and to be obligated to defend and indemnify CITGO and CARCO against Eres' claims. The Defendants were ordered to proceed with arbitration; an arbitration hearing occurred in June 2011. Additional arbitration hearing dates are currently scheduled for mid-October 2011. We intend to vigorously defend against Eres' claims in arbitration.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Other. We are also a party to additional claims and legal proceedings arising in the ordinary course of business. Due to the inherent uncertainty of litigation, there can be no assurance that the resolution of any particular claim or proceeding would not have a material adverse effect on our results of operations, financial position or liquidity. It is possible that if one or more of the matters described above were decided against us, the effects could be material to our results of operations in the period in which we would be required to record or adjust the related liability and could also be material to our cash flows in the periods we would be required to pay such liability.

6. FAIR VALUE MEASUREMENTS

We segregate the inputs used in measuring fair value into three levels: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists.

The following assets and liabilities are measured at fair value:



	June 30, 2011
	Level 1			Level 2			Level 3		Total
	(Thousands of Dollars)
Other current assets:
Product imbalances	$	1,074		$	—		$	—	$	1,074
Commodity derivatives	10,898			4,653			—		15,551
Other long-term assets, net:
Interest rate swaps	—			23,214			—		23,214
Accrued liabilities:
Product imbalances	(625		)	—			—		(625		)
Commodity derivatives	(5,878		)	(19,883		)	—		(25,761		)
Other long-term liabilities:
Interest rate swaps	—			(20,362		)	—		(20,362		)
Total	$	5,469		$	(12,378	)	$	—	$	(6,909	)



	December 31, 2010
	Level 1			Level 2			Level 3		Total
	(Thousands of Dollars)
Other current assets:
Product imbalances	$	991		$	—		$	—	$	991
Other long-term assets, net:
Interest rate swaps	—			45,663			—		45,663
Accrued liabilities:
Product imbalances	(988		)	—			—		(988		)
Commodity derivatives	(14,741		)	—			—		(14,741		)
Other long-term liabilities:
Interest rate swaps	—			(29,483		)	—		(29,483		)
Total	$	(14,738	)	$	16,180		$	—	$	1,442

Product Imbalances

We value our assets and liabilities related to product imbalances using quoted market prices as of the reporting date.

Interest Rate Swaps

We estimate the fair value of both our fixed-to-floating and forward-starting interest rate swaps using discounted cash flows, which use observable inputs such as time to maturity and market interest rates.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Commodity Derivatives

The fair value of certain of our commodity derivative instruments are based on quoted prices on an exchange; accordingly, these are categorized in Level 1 of the fair value hierarchy. We also have derivative instruments that are are valued using industry pricing services and other observable inputs, such as quoted prices on an exchange for similar derivative instruments. Therefore, these derivative instruments are categorized in Level 2 of the fair value hierarchy. We have consistently applied these valuation techniques in all periods presented. See Note 7. Derivatives and Risk Management Activities for a discussion of our derivative instruments.

Fair Value of Financial Instruments

We do not record our outstanding debt at fair value in our consolidated balance sheet. The estimated fair value and carrying amount of our debt was as follows:



	June 30, 2011		December 31, 2010
	(Thousands of Dollars)
Fair value	$	2,553,057	$	2,249,190
Carrying amount	$	2,442,244	$	2,137,080

We estimated the fair values of our debt using a discounted cash flow analysis using current incremental borrowing rates for similar types of borrowing arrangements.

7. DERIVATIVES AND RISK MANAGEMENT ACTIVITIES

We utilize various derivative instruments to: (i) manage our exposure to commodity price risk; (ii) engage in a trading program; and (iii) manage our exposure to interest rate risk. Our risk management policies and procedures are designed to monitor interest rates, futures and swaps positions, as well as physical volumes, grades, locations and delivery schedules to help ensure that our hedging activities address our market risks. We have a risk management committee that oversees our trading controls and procedures and certain aspects of commodity and trading risk management. Our risk management committee also reviews all new commodity and trading risk management strategies in accordance with our risk management policy, as approved by our board of directors.

Interest Rate Risk

We are a party to certain interest rate swap agreements to manage our exposure to changes in interest rates. We have fixed-to-floating interest rate swap agreements associated with a portion of our fixed-rate senior notes. During the six months ended June 30, 2011, we entered into a fixed-to-floating interest rate swap agreement with a notional amount of $40.0 million related to the 7.65% senior notes issued in April 2008. Under the terms of this interest rate swap agreement, we will receive a fixed rate of 7.65% and will pay a variable rate based on three-month USD LIBOR plus a percentage. We account for this fixed-to-floating interest rate swap as a fair value hedge. Accordingly, we record mark-to-market adjustments to the fair value of the swap and the related change in the fair value of the associated hedged debt, as well as any hedge ineffectiveness, in "Interest expense, net."

We are also a party to fixed-to-floating interest rate swap agreements that qualify for the shortcut method of accounting. As a result, changes in the fair value of these swaps completely offset the changes in the fair value of the underlying hedged debt. During the six months ended June 30, 2011, we terminated interest rate swap agreements with an aggregate notional amount of $167.5 million associated with our 6.875% and 6.05% senior notes. We received $9.1 million in connection with the termination, which is being amortized into "Interest expense, net" over the remaining lives of the 6.875% and 6.05% senior notes. Proceeds from the termination of interest rate swap agreements is included in cash flows from financing activities on the consolidated statements of cash flows. The total aggregate notional amount of the fixed-to-floating interest rate swaps was $490.0 million and $617.5 million as of June 30, 2011 and December 31, 2010, respectively. The weighted-average interest rate that we paid under our fixed-to-floating interest rate swaps was 2.5% as of June 30, 2011.

We are also a party to forward-starting interest rate swap agreements with an aggregate notional amount of $500.0 million as of June 30, 2011 and December 31, 2010 related to forecasted probable debt issuances in 2012 and 2013. We entered into the swaps in order to hedge the risk of changes in the interest payments attributable to changes in the benchmark interest rate during the period from the effective date of the swap to the issuance of the forecasted debt. These swaps are designated and qualify as cash flow hedges.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Commodity Price Risk

We are exposed to market risks related to the volatility of crude oil and refined product prices. In order to reduce the risk of commodity price fluctuations with respect to our crude oil and finished product inventories and related firm commitments to purchase and/or sell such inventories, we utilize futures and swaps contracts, which qualify and we designate as fair value hedges.

During the second quarter of 2011, we entered into swaps contracts to hedge the price risk associated with the San Antonio Refinery. These swaps contracts fix the purchase price of crude oil and sales prices of refined products for a portion of the expected production of the San Antonio Refinery, thereby mitigating the risk of volatility of future cash flows associated with hedged volumes. These swaps contracts qualified and we designated them as cash flow hedges.

Derivatives that are intended to hedge our commodity price risk, but fail to qualify as fair value or cash flow hedges are considered economic hedges, and associated gains and losses are recorded in net income.

We also enter into commodity derivatives in order to attempt to profit from market fluctuations. These derivative instruments are financial positions entered into without underlying physical inventory and are not considered hedges. Changes in the fair values are recorded in net income.

The volume of commodity contracts is based on open derivative positions and represents the combined volume of our long and short positions on an absolute basis, which totaled 35.0 million barrels and 12.8 million barrels as of June 30, 2011 and December 31, 2010, respectively.

As of June 30, 2011, and December 31, 2010, we had $7.4 million and $17.8 million, respectively, of margin deposits related to our derivative instruments.

The fair values of our derivative instruments included in our consolidated balance sheets were as follows:



		Asset Derivatives				Liability Derivatives
	Balance Sheet Location	June 30, 2011		December 31, 2010		June 30, 2011			December 31, 2010
		(Thousands of Dollars)
Derivatives Designated as Hedging Instruments:
Commodity contracts	Other current assets	$	16,045	$	—	$	(12,052	)	$	—
Interest rate swaps	Other long-term assets, net	23,214		45,663		—			—
Commodity contracts	Accrued liabilities	42,562		2,176		(62,445		)	(2,522		)
Interest rate swaps	Other long-term liabilities	—		—		(20,362		)	(29,483		)
Total		81,821		47,839		(94,859		)	(32,005		)

Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Other current assets	26,313		—		(14,755		)	—
Commodity contracts	Accrued liabilities	5,105		46,632		(10,983		)	(61,027		)
Total		31,418		46,632		(25,738		)	(61,027		)

Total Derivatives		$	113,239	$	94,471	$	(120,597	)	$	(93,032	)

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The earnings impact of our derivative activity was as follows:



Derivatives Designated as Fair Value Hedging Instruments	Income Statement Location	Amount of Gain (Loss) Recognized in Income on Derivative (Effective Portion)			Amount of Gain (Loss) Recognized in Income on Hedged Item			Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)
		(Thousands of Dollars)
Three months ended June 30, 2011:
Interest rate swaps	Interest expense, net	$	14,528		$	(14,812	)	$	(284	)
Commodity contracts	Cost of product sales	1,002			(1,650		)	(648		)
Total		$	15,530		$	(16,462	)	$	(932	)

Three months ended June 30, 2010:
Interest rate swaps	Interest expense, net	$	1,890		$	(1,890	)	$	—
Commodity contracts	Cost of product sales	13,061			(12,002		)	1,059
Total		$	14,951		$	(13,892	)	$	1,059

Six months ended June 30, 2011:
Interest rate swaps	Interest expense, net	$	8,614		$	(8,852	)	$	(238	)
Commodity contracts	Cost of product sales	(11,064		)	10,720			(344		)
Total		$	(2,450	)	$	1,868		$	(582	)

Six months ended June 30, 2010:
Interest rate swaps	Interest expense, net	$	3,124		$	(3,124	)	$	—
Commodity contracts	Cost of product sales	11,734			(8,915		)	2,819
Total		$	14,858		$	(12,039	)	$	2,819

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)



Derivatives Designated as Cash Flow Hedging Instruments	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)			Income Statement Location (a)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)			Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)
	(Thousands of Dollars)				(Thousands of Dollars)
Three months ended June 30, 2011:
Interest rate swaps	$	(15,708	)	Interest expense, net	$	—		$	—
Commodity contracts	(16,454		)	Cost of product sales	(1,225		)	—
Total	$	(32,162	)		$	(1,225	)	$	—

Three months ended June 30, 2010:
Commodity contracts	$	1,119		Cost of product sales	$	(498	)	$	284

Six months ended June 30, 2011:
Interest rate swaps	$	(12,830	)	Interest expense, net	$	—		$	—
Commodity contracts	(16,454		)	Cost of product sales	(1,225		)	—
Total	$	(29,284	)		$	(1,225	)	$	—

Six months ended June 30, 2010:
Commodity contracts	$	239		Cost of product sales	$	(913	)	$	284


(a)	Amounts are included in specified location for both the gain (loss) reclassified from accumulated other comprehensive income (OCI) into income (effective portion) and the gain (loss) recognized in income on derivative (ineffective portion).



Derivatives Not Designated as Hedging Instruments	Income Statement Location	Amount of Gain (Loss) Recognized in Income
		(Thousands of Dollars)
Three months ended June 30, 2011:
Commodity contracts	Revenues	$	(29	)
Commodity contracts	Cost of product sales	4,462
Commodity contracts	Operating expenses	—
Total		$	4,433

Three months ended June 30, 2010:
Commodity contracts	Cost of product sales	$	5,632
Commodity contracts	Operating expenses	—
Total		$	5,632

Six months ended June 30, 2011:
Commodity contracts	Revenues	$	235
Commodity contracts	Cost of product sales	(11,167		)
Commodity contracts	Operating expenses	46
Total		$	(10,886	)

Six months ended June 30, 2010:
Commodity contracts	Cost of product sales	$	6,698
Commodity contracts	Operating expenses	(10		)
Total		$	6,688

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

For derivatives designated as cash flow hedging instruments, once a hedged transaction occurs, we reclassify the effective portion from accumulated OCI to “Cost of product sales” or “Interest expense, net.” As of June 30, 2011, we expect to reclassify a loss of $8.5 million to “Cost of product sales” and a gain of $0.3 million to “Interest expense, net” within the next twelve months. The maximum length of time over which we are hedging our exposure to the variability in future cash flows is approximately two years for our forward-starting interest rate swaps and approximately five years for our commodity contracts.

Concentration of Credit Risk

We are exposed to credit risk on our hedging instruments in the event of nonperformance by counterparties. However, because our hedging activities are transacted only with highly rated institutions, we do not anticipate nonperformance by any of these counterparties.

8. RELATED PARTY TRANSACTIONS

Our operations are managed by NuStar GP, LLC, the general partner of our general partner. Under a services agreement between NuStar Energy and NuStar GP, LLC, employees of NuStar GP, LLC perform services for our U.S. operations. Certain of our wholly owned subsidiaries employ persons who perform services for our international operations. Employees of NuStar GP, LLC provide services to both NuStar Energy and NuStar GP Holdings; therefore, we reimburse NuStar GP, LLC for all costs related to its employees, other than costs associated with NuStar GP Holdings. Related party revenues result from storage agreements between our Turkey subsidiary and the noncontrolling shareholder.



The following table summarizes information pertaining to related party transactions:

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
	(Thousands of Dollars)
Revenues	$	407	$	—	$	537	$	—
Operating expenses	$	36,801	$	34,075	$	71,910	$	67,919
General and administrative expenses	$	16,035	$	13,320	$	32,983	$	30,558

We had a payable to NuStar GP, LLC of $15.5 million and $10.3 million, as of June 30, 2011 and December 31, 2010, respectively, with both amounts representing payroll, employee benefit plans and unit-based compensation. We also had a long-term payable to NuStar GP, LLC as of June 30, 2011 and December 31, 2010 of $11.4 million and $10.1 million, respectively, related to amounts payable for retiree medical benefits and other post-employment benefits.

9. OTHER (EXPENSE) INCOME

Other (expense) income, net consisted of the following:



	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Thousands of Dollars)
Storage agreement early termination costs	$	—		$	—		$	(5,000	)	$	—
Gain from insurance recoveries	—			13,500			—			13,500
Gain (loss) from sale or disposition of assets	178			(793		)	236			(688		)
Foreign exchange gains (losses)	34			382			(576		)	(234		)
Other, net	(1,179		)	1,727			(1,126		)	2,539
Other (expense) income, net	$	(967	)	$	14,816		$	(6,466	)	$	15,117

For the six months ended June 30, 2011, "Other (expense) income, net" included $5.0 million in costs associated with the early termination of a third-party storage agreement at our Paulsboro, New Jersey asphalt refinery. For the three and six months ended June 30, 2010, the gain from insurance recoveries resulted from insurance claims related to damage in the third quarter of 2008 primarily at our Texas City, Texas terminal caused by Hurricane Ike.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

10. PARTNERS’ EQUITY

Partners' Equity Activity

The following table summarizes changes in the carrying amount of partners' equity and noncontrolling interest:



	Three Months Ended June 30, 2011									Three Months Ended June 30, 2010
	NuStar Energy L.P. Partners' Equity			Noncontrolling Interest			Total Partners' Equity			NuStar Energy L.P. Partners' Equity			Noncontrolling Interest		Total Partners' Equity
	(Thousands of Dollars)
Beginning balance	$	2,663,017		$	15,566		$	2,678,583		$	2,430,330		$	—	$	2,430,330
Net income	92,599			6			92,605			99,422			—		99,422
Other comprehensive income:
Foreign currency translation adjustment	(842		)	(827		)	(1,669		)	(8,519		)	—		(8,519		)
Unrealized gain (loss) on cash flow hedges	(32,162		)	—			(32,162		)	1,617			—		1,617
Net loss reclassified into income on cash flow hedges	1,225			—			1,225			—			—		—
Total other comprehensive income	(31,779		)	(827		)	(32,606		)	(6,902		)	—		(6,902		)
Total comprehensive income	60,820			(821		)	59,999			92,520			—		92,520
Cash distributions to partners	(79,616		)	—			(79,616		)	(73,392		)	—		(73,392		)
Issuance of common units, including contribution from general partner	—			—			—			245,450			—		245,450
Ending balance	$	2,644,221		$	14,745		$	2,658,966		$	2,694,908		$	—	$	2,694,908

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)



	Six Months Ended June 30, 2011									Six Months Ended June 30, 2010
	NuStar Energy L.P. Partners' Equity			Noncontrolling Interest			Total Partners' Equity			NuStar Energy L.P. Partners' Equity			Noncontrolling Interest		Total Partners' Equity
	(Thousands of Dollars)
Beginning balance	$	2,702,700		$	—		$	2,702,700		$	2,484,968		$	—	$	2,484,968
Turkey acquisition	—			15,000			15,000			—			—		—
Net income	121,101			20			121,121			119,125			—		119,125
Other comprehensive income:
Foreign currency translation adjustment	7,711			(275		)	7,436			(8,928		)	—		(8,928		)
Unrealized gain (loss) on cash flow hedges	(29,284		)	—			(29,284		)	1,152			—		1,152
Net loss reclassified into income on cash flow hedges	1,225			—			1,225			—			—		—
Total other comprehensive income	(20,348		)	(275		)	(20,623		)	(7,776		)	—		(7,776		)
Total comprehensive income	100,753			(255		)	100,498			111,349			—		111,349
Cash distributions to partners	(159,232		)	—			(159,232		)	(146,784		)	—		(146,784		)
Issuance of common units, including contribution from general partner	—			—			—			245,375			—		245,375
Ending balance	$	2,644,221		$	14,745		$	2,658,966		$	2,694,908		$	—	$	2,694,908

Allocations of Net Income

Our partnership agreement, as amended, sets forth the calculation to be used to determine the amount and priority of cash distributions that the common unitholders and the general partner will receive. The partnership agreement also contains provisions for the allocation of net income and loss to the unitholders and the general partner. For purposes of maintaining partner capital accounts, the partnership agreement specifies that items of income and loss shall be allocated among the partners in accordance with their respective percentage interests. Normal allocations according to percentage interests are made after giving effect to priority income allocations, if any, in an amount equal to incentive cash distributions allocated 100% to the general partner. The following table details the calculation of net income applicable to the general partner:



	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Thousands of Dollars)
Net income attributable to NuStar Energy L.P.	$	92,599		$	99,422		$	121,101		$	119,125
Less general partner incentive distribution	8,963			8,369			17,531			16,168
Net income after general partner incentive distribution	83,636			91,053			103,570			102,957
General partner interest	2		%	2		%	2		%	2		%
General partner allocation of net income after general partner incentive distribution	1,673			1,821			2,071			2,059
General partner incentive distribution	8,963			8,369			17,531			16,168
Net income applicable to general partner	$	10,636		$	10,190		$	19,602		$	18,227

Cash Distributions

On May 13, 2011, we paid a quarterly cash distribution totaling $79.6 million, or $1.075 per unit, related to the first quarter of 2011. On July 28, 2011, our board of directors approved a quarterly cash distribution of $1.095 per unit related to the second quarter of 2011. This distribution will be paid on August 12, 2011 to unitholders of record on August 9, 2011 and will total $81.3 million.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The following table reflects the allocation of total cash distributions to the general and limited partners applicable to the period in which the distributions were earned:



	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	1,627	$	1,576	$	3,219	$	3,043
General partner incentive distribution	8,963		8,369		17,531		16,168
Total general partner distribution	10,590		9,945		20,750		19,211
Limited partners’ distribution	70,749		68,809		140,205		132,935
Total cash distributions	$	81,339	$	78,754	$	160,955	$	152,146

Cash distributions per unit applicable to limited partners	$	1.095	$	1.065	$	2.170	$	2.130

11. NET INCOME PER UNIT

We have identified the general partner interest and incentive distribution rights (IDR) as participating securities and use the two-class method when calculating the net income per unit applicable to limited partners, which is based on the weighted-average number of common units outstanding during the period. Basic and diluted net income per unit applicable to limited partners are the same because we have no potentially dilutive securities outstanding.

The following table details the calculation of earnings per unit:



	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011			2010
	(Thousands of Dollars, Except Unit and Per Unit Data)
Net income attributable to NuStar Energy L.P.	$	92,599	$	99,422	$	121,101		$	119,125
Less general partner distribution (including IDR)	10,590		9,945		20,750			19,211
Less limited partner distribution	70,749		68,809		140,205			132,935
Distributions less than (greater than) earnings	$	11,260	$	20,668	$	(39,854	)	$	(33,021	)

General partner earnings:
Distributions	$	10,590	$	9,945	$	20,750		$	19,211
Allocation of distributions less than (greater than) earnings (2%)	225		413		(798		)	(661		)
Total	$	10,815	$	10,358	$	19,952		$	18,550

Limited partner earnings:
Distributions	$	70,749	$	68,809	$	140,205		$	132,935
Allocation of distributions less than (greater than) earnings (98%)	11,035		20,255		(39,056		)	(32,360		)
Total	$	81,784	$	89,064	$	101,149		$	100,575

Weighted-average limited partner units outstanding	64,610,549		62,289,670		64,610,549			61,255,853

Net income per unit applicable to limited partners	$	1.27	$	1.43	$	1.57		$	1.64

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

12. STATEMENTS OF CASH FLOWS

Changes in current assets and current liabilities were as follows:



	Six Months Ended June 30,
	2011			2010
	(Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable	$	(139,110	)	$	(73,261	)
Inventories	(239,766		)	(190,579		)
Other current assets	(17,759		)	27,248
Increase (decrease) in current liabilities:
Accounts payable	202,229			94,389
Payable to related party	5,133			13,815
Accrued interest payable	11			27
Accrued liabilities	(16,068		)	(31,862		)
Taxes other than income tax	3,124			(3,189		)
Income tax payable	470			1,397
Changes in current assets and current liabilities	$	(201,736	)	$	(162,015	)

Cash flows related to interest and income taxes were as follows:



	Six Months Ended June 30,
	2011		2010
	(Thousands of Dollars)
Cash paid for interest, net of amount capitalized	$	53,684	$	44,775
Cash paid for income taxes, net of tax refunds received	$	7,070	$	8,614

13. SEGMENT INFORMATION

Our reportable business segments consist of storage, transportation, and asphalt and fuels marketing. Our segments represent strategic business units that offer different services and products. We evaluate the performance of each segment based on its respective operating income, before general and administrative expenses and certain non-segmental depreciation and amortization expense. General and administrative expenses are not allocated to the operating segments since those expenses relate primarily to the overall management at the entity level. Our principal operations include terminalling and storage of petroleum products, the transportation of petroleum products and anhydrous ammonia, and asphalt and fuels marketing. Intersegment revenues result from storage and throughput agreements with related parties at lease rates consistent with rates charged to third parties for storage and at pipeline tariff rates based upon the applicable published tariff.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Results of operations for the reportable segments were as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Thousands of Dollars)
Revenues:
Storage:
Third-party revenues	$	127,646		$	118,131		$	252,899		$	232,544
Intersegment revenues	11,491			10,678			22,883			22,897
Related party revenues	407			—			537			—
Total storage	139,544			128,809			276,319			255,441
Transportation:
Third-party revenues	71,562			76,956			144,572			151,838
Intersegment revenues	—			2			—			382
Total transportation	71,562			76,958			144,572			152,220
Asphalt and fuels marketing:
Third-party revenues	1,389,569			929,854			2,425,792			1,686,088
Intersegment revenues	749			136			4,594			2,832
Total asphalt and fuels marketing	1,390,318			929,990			2,430,386			1,688,920
Consolidation and intersegment eliminations	(12,240		)	(10,816		)	(27,477		)	(26,111		)
Total revenues	$	1,589,184		$	1,124,941		$	2,823,800		$	2,070,470

Operating income:
Storage	$	42,848		$	42,865		$	91,544		$	85,753
Transportation	30,163			34,735			64,560			68,492
Asphalt and fuels marketing	72,153			47,552			72,271			39,656
Consolidation and intersegment eliminations	(110		)	514			(45		)	277
Total segment operating income	145,054			125,666			228,330			194,178
Less general and administrative expenses	26,119			22,195			52,102			49,464
Less other depreciation and amortization expense	1,584			1,441			3,146			2,911
Total operating income	$	117,351		$	102,030		$	173,082		$	141,803

Total assets by reportable segment were as follows:



	June 30, 2011		December 31, 2010
	(Thousands of Dollars)
Storage	$	2,564,255	$	2,454,264
Transportation	1,237,768		1,256,614
Asphalt and fuels marketing	1,696,521		1,154,499
Total segment assets	5,498,544		4,865,377
Other partnership assets	398,164		521,016
Total consolidated assets	$	5,896,708	$	5,386,393

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

14. CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

NuStar Energy has no operations and its assets consist mainly of its investments in NuStar Logistics and NuPOP, both wholly owned subsidiaries. The senior notes issued by NuStar Logistics and NuPOP are fully and unconditionally guaranteed by NuStar Energy, and each of NuStar Logistics and NuPOP fully and unconditionally guarantee the outstanding senior notes of the other. As a result, the following condensed consolidating financial statements are presented as an alternative to providing separate financial statements for NuStar Logistics and NuPOP.

Condensed Consolidating Balance Sheets

June 30, 2011

(Thousands of Dollars)



	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries (a)		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	53	$	40,109	$	—	$	88,714	$	—		$	128,876
Receivables, net	—		24,190		6,235		426,985		—			457,410
Inventories	—		2,030		9,232		656,985		(339		)	667,908
Other current assets	—		14,009		1,221		45,932		—			61,162
Intercompany receivable	—		918,943		745,857		—		(1,664,800		)	—
Total current assets	53		999,281		762,545		1,218,616		(1,665,139		)	1,315,356
Property, plant and equipment, net	—		1,080,100		603,274		1,678,478		—			3,361,852
Intangible assets, net	—		2,036		—		44,269		—			46,305
Goodwill	—		18,094		170,652		660,203		—			848,949
Investment in wholly owned subsidiaries	3,130,434		242,172		1,107,639		2,264,898		(6,745,143		)	—
Investment in joint venture	—		—		—		67,272		—			67,272
Deferred income tax asset	—		—		—		10,176		—			10,176
Other long-term assets, net	23		179,591		26,329		40,855		—			246,798
Total assets	$	3,130,510	$	2,521,274	$	2,670,439	$	5,984,767	$	(8,410,282	)	$	5,896,708
Liabilities and Partners’ Equity
Current portion of long-term debt	$	—	$	832	$	255,152	$	—	$	—		$	255,984
Payables	—		43,404		5,302		475,976		—			524,682
Accrued interest payable	—		21,207		8,490		22		—			29,719
Accrued liabilities	584		11,784		3,480		43,475		—			59,323
Taxes other than income tax	—		4,690		2,995		6,344		—			14,029
Income tax payable	—		921		—		669		—			1,590
Intercompany payable	511,856		—		—		1,152,944		(1,664,800		)	—
Total current liabilities	512,440		82,838		275,419		1,679,430		(1,664,800		)	885,327
Long-term debt, less current portion	—		1,898,263		254,231		33,766		—			2,186,260
Long-term payable to related party	—		4,920		—		6,491		—			11,411
Deferred income tax liability	—		—		—		36,407		—			36,407
Other long-term liabilities	—		23,909		249		94,179		—			118,337
Total partners' equity	2,618,070		511,344		2,140,540		4,134,494		(6,745,482		)	2,658,966
Total liabilities and partners’ equity	$	3,130,510	$	2,521,274	$	2,670,439	$	5,984,767	$	(8,410,282	)	$	5,896,708


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Balance Sheets

December 31, 2010

(Thousands of Dollars)



	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries (a)		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	53	$	107,655	$	—	$	73,413	$	—		$	181,121
Receivables, net	—		27,708		10,648		266,885		(3,188		)	302,053
Inventories	—		1,776		6,712		405,521		(472		)	413,537
Other current assets	—		10,116		1,202		31,478		—			42,796
Intercompany receivable	—		786,658		729,365		—		(1,516,023		)	—
Total current assets	53		933,913		747,927		777,297		(1,519,683		)	939,507
Property, plant and equipment, net	—		1,006,479		614,762		1,566,216		—			3,187,457
Intangible assets, net	—		2,106		—		40,927		—			43,033
Goodwill	—		18,094		170,652		624,524		—			813,270
Investment in wholly owned subsidiaries	3,167,764		159,813		994,249		2,112,355		(6,434,181		)	—
Investment in joint venture	—		—		—		69,603		—			69,603
Deferred income tax asset	—		—		—		8,138		—			8,138
Other long-term assets, net	—		267,532		26,329		31,524		—			325,385
Total assets	$	3,167,817	$	2,387,937	$	2,553,919	$	5,230,584	$	(7,953,864	)	$	5,386,393
Liabilities and Partners’ Equity
Current portion of long-term debt	$	—	$	832	$	—	$	—	$	—		$	832
Payables	—		28,705		9,559		257,651		(3,188		)	292,727
Accrued interest payable	—		21,180		8,490		36		—			29,706
Accrued liabilities	680		18,154		3,973		35,146		—			57,953
Taxes other than income tax	125		4,273		2,587		3,733		—			10,718
Income tax payable	—		1,140		—		153		—			1,293
Intercompany payable	510,812		—		—		1,005,211		(1,516,023		)	—
Total current liabilities	511,617		74,284		24,609		1,301,930		(1,519,211		)	393,229
Long-term debt, less current portion	—		1,589,189		514,270		32,789		—			2,136,248
Long-term payable to related party	—		3,571		—		6,517		—			10,088
Deferred income tax liability	—		—		—		29,565		—			29,565
Other long-term liabilities	—		33,458		228		80,877		—			114,563
Total partners’ equity	2,656,200		687,435		2,014,812		3,778,906		(6,434,653		)	2,702,700
Total liabilities and partners’ equity	$	3,167,817	$	2,387,937	$	2,553,919	$	5,230,584	$	(7,953,864	)	$	5,386,393


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Income

For the Three Months Ended June 30, 2011

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Revenues	$	—		$	67,771		$	40,102		$	1,486,632		$	(5,321	)	$	1,589,184
Costs and expenses	386			43,059			30,606			1,402,737			(4,955		)	1,471,833
Operating (loss) income	(386		)	24,712			9,496			83,895			(366		)	117,351
Equity in earnings of subsidiaries	92,985			51,532			28,143			47,293			(219,953		)	—
Equity in earnings of joint venture	—			—			—			2,010			—			2,010
Interest expense, net	—			(14,236		)	(5,759		)	(627		)	—			(20,622		)
Other income, net	—			126			6			(1,099		)	—			(967		)
Income (loss) before income tax expense	92,599			62,134			31,886			131,472			(220,319		)	97,772
Income tax expense	—			664			—			4,503			—			5,167
Net income (loss)	92,599			61,470			31,886			126,969			(220,319		)	92,605
Less net income attributable to noncontrolling interest	—			—			—			6			—			6
Net income (loss) attributable to NuStar Energy L.P.	$	92,599		$	61,470		$	31,886		$	126,963		$	(220,319	)	$	92,599


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Income

For the Three Months Ended June 30, 2010

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Revenues	$	—		$	73,994		$	37,496		$	1,017,572		$	(4,121	)	$	1,124,941
Costs and expenses	226			44,206			28,547			956,460			(6,528		)	1,022,911
Operating (loss) income	(226		)	29,788			8,949			61,112			2,407			102,030
Equity in earnings of subsidiaries	99,648			33,490			43,103			57,400			(233,641		)	—
Equity in earnings of joint venture	—			—			—			2,102			—			2,102
Interest expense, net	—			(12,407		)	(5,921		)	(562		)	—			(18,890		)
Other income, net	—			664			247			13,905			—			14,816
Income (loss) before income tax expense	99,422			51,535			46,378			133,957			(231,234		)	100,058
Income tax expense	—			333			—			303			—			636
Net income (loss)	$	99,422		$	51,202		$	46,378		$	133,654		$	(231,234	)	$	99,422


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Income

For the Six Months Ended June 30, 2011

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Revenues	$	—		$	133,929		$	90,449		$	2,616,938		$	(17,516	)	$	2,823,800
Costs and expenses	801			86,331			66,579			2,514,606			(17,599		)	2,650,718
Operating (loss) income	(801		)	47,598			23,870			102,332			83			173,082
Equity in earnings of subsidiaries	121,902			34,542			56,663			95,838			(308,945		)	—
Equity in earnings of joint venture	—			—			—			4,398			—			4,398
Interest expense, net	—			(28,024		)	(11,551		)	(1,504		)	—			(41,079		)
Other income, net	—			183			19			(6,668		)	—			(6,466		)
Income (loss) before income tax expense	121,101			54,299			69,001			194,396			(308,862		)	129,935
Income tax expense	—			1,027			—			7,787			—			8,814
Net income (loss)	121,101			53,272			69,001			186,609			(308,862		)	121,121
Less net income attributable to noncontrolling interest	—			—			—			20			—			20
Net income (loss) attributable to NuStar Energy L.P.	$	121,101		$	53,272		$	69,001		$	186,589		$	(308,862	)	$	121,101


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

Table of Contents

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Income

For the Six Months Ended June 30, 2010

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Revenues	$	—		$	147,226		$	72,860		$	1,863,059		$	(12,675	)	$	2,070,470
Costs and expenses	675			93,034			55,978			1,793,835			(14,855		)	1,928,667
Operating (loss) income	(675		)	54,192			16,882			69,224			2,180			141,803
Equity in earnings of subsidiaries	119,799			14,458			67,890			94,894			(297,041		)	—
Equity in earnings of joint venture	—			—			—			5,117			—			5,117
Interest expense, net	1			(24,414		)	(11,844		)	(1,219		)	—			(37,476		)
Other income, net	—			1,239			259			13,619			—			15,117
Income (loss) before income tax expense	119,125			45,475			73,187			181,635			(294,861		)	124,561
Income tax expense	—			726			—			4,710			—			5,436
Net income (loss)	$	119,125		$	44,749		$	73,187		$	176,925		$	(294,861	)	$	119,125


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2011

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	158,188		$	54,572		$	18,441		$	(70,129	)	$	(159,248	)	$	1,824
Cash flows from investing activities:
Capital expenditures	—			(99,307		)	(1,802		)	(55,285		)	—			(156,394		)
Acquisitions	—			—			—			(100,448		)	—			(100,448		)
Investment in other long-term assets	—			—			—			(5,580		)	—			(5,580		)
Proceeds from sale or disposition of assets	—			40			44			205			—			289
Investment in subsidiaries	(57,300		)	(47,869		)	(56,727		)	(56,727		)	218,623			—
Net cash used in investing activities	(57,300		)	(147,136		)	(58,485		)	(217,835		)	218,623			(262,133		)
Cash flows from financing activities:
Debt borrowings	—			617,364			—			—			—			617,364
Debt repayments	—			(257,593		)	—			—			—			(257,593		)
Distributions to unitholders and general partner	(159,232		)	(159,232		)	—			(16		)	159,248			(159,232		)
Contributions from (distributions to) affiliates	57,300			(57,300		)	56,727			161,896			(218,623		)	—
Proceeds from termination of interest rate swaps	—			9,112			—			—			—			9,112
Net intercompany borrowings (repayments)	1,044			(131,914		)	(16,683		)	147,553			—			—
Other, net	—			(2,268		)	—			(543		)	—			(2,811		)
Net cash provided by (used in) financing activities	(100,888		)	18,169			40,044			308,890			(59,375		)	206,840
Effect of foreign exchange rate changes on cash	—			6,849			—			(5,625		)	—			1,224
Net (decrease) increase in cash and cash equivalents	—			(67,546		)	—			15,301			—			(52,245		)
Cash and cash equivalents as of the beginning of the period	53			107,655			—			73,413			—			181,121
Cash and cash equivalents as of the end of the period	$	53		$	40,109		$	—		$	88,714		$	—		$	128,876


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2010

(Thousands of Dollars)



	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries (a)			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	144,594		$	84,332		$	9,135		$	(77,609	)	$	(146,799	)	$	13,653
Cash flows from investing activities:
Capital expenditures	—			(45,645		)	(5,146		)	(66,894		)	—			(117,685		)
Acquisition	—			—			—			(43,026		)	—			(43,026		)
Proceeds from insurance recoveries	—			—			—			13,500			—			13,500
Investment in other long-term assets	—			—			—			(3,224		)	—			(3,224		)
Proceeds from sale or disposition of assets	—			—			18			139			—			157
Investment in subsidiaries	(245,604		)	—			—			(25		)	245,629			—
Net cash used in investing activities	(245,604		)	(45,645		)	(5,128		)	(99,530		)	245,629			(150,278		)
Cash flows from financing activities:
Debt borrowings	—			847,146			—			—			—			847,146
Debt repayments	—			(832,424		)	—			—			—			(832,424		)
Issuance of common units, net of issuance costs	240,297			—			—			—			—			240,297
General partner contribution	5,078			—			—			—			—			5,078
Contributions from (distributions to) affiliates	—			245,604			—			25			(245,629		)	—
Distributions to unitholders and general partner	(146,784		)	(146,784		)	—			(15		)	146,799			(146,784		)
Net intercompany borrowings (repayments)	2,419			(136,145		)	(4,006		)	137,732			—			—
Other, net	—			(3,962		)	(1		)	(1,548		)	—			(5,511		)
Net cash provided by (used in) financing activities	101,010			(26,565		)	(4,007		)	136,194			(98,830		)	107,802
Effect of foreign exchange rate changes on cash	—			(13,721		)	—			15,092			—			1,371
Net decrease in cash and cash equivalents	—			(1,599		)	—			(25,853		)	—			(27,452		)
Cash and cash equivalents as of the beginning of the period	53			1,602			—			60,351			—			62,006
Cash and cash equivalents as of the end of the period	$	53		$	3		$	—		$	34,498		$	—		$	34,554


(a)	Non-guarantor subsidiaries are wholly owned by NuStar Energy, NuStar Logistics or NuPOP.

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Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations

FORWARD-LOOKING STATEMENTS

This Form 10-Q contains certain estimates, predictions, projections, assumptions and other forward-looking statements that involve various risks and uncertainties. While these forward-looking statements, and any assumptions upon which they are based, are made in good faith and reflect our current judgment regarding the direction of our business, actual results will almost always vary, sometimes materially, from any estimates, predictions, projections, assumptions or other future performance suggested in this report. These forward-looking statements can generally be identified by the words “anticipates,” “believes,” “expects,” “plans,” “intends,” “estimates,” “forecasts,” “budgets,” “projects,” “will,” “could,” “should,” “may” and similar expressions. These statements reflect our current views with regard to future events and are subject to various risks, uncertainties and assumptions. Please read our Annual Report on Form 10-K for the year ended December 31, 2010, Part I, Item 1A “Risk Factors,” as well as our subsequent current and quarterly reports, for a discussion of certain of those risks, uncertainties and assumptions.

If one or more of these risks or uncertainties materialize, or if the underlying assumptions prove incorrect, our actual results may vary materially from those described in any forward-looking statement. Other unknown or unpredictable factors could also have material adverse effects on our future results. Readers are cautioned not to place undue reliance on this forward-looking information, which is as of the date of this Form 10-Q. We do not intend to update these statements unless it is required by the securities laws to do so, and we undertake no obligation to publicly release the result of any revisions to any such forward-looking statements that may be made to reflect events or circumstances after the date of this report or to reflect the occurrence of unanticipated events.

OVERVIEW

NuStar Energy L.P. (NuStar Energy) is a publicly held Delaware limited partnership engaged in the terminalling and storage of petroleum products, the transportation of petroleum products and anhydrous ammonia, and petroleum refining and marketing. Unless otherwise indicated, the terms “NuStar Energy,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. NuStar GP Holdings, LLC (NuStar GP Holdings) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns a 17.5% total interest in us as of June 30, 2011. Our Management’s Discussion and Analysis of Financial Condition and Results of Operations is presented in six sections:


•	Overview


•	Results of Operations


•	Outlook


•	Liquidity and Capital Resources


•	Related Party Transactions


•	Critical Accounting Policies

Acquisitions

Operations

We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). Our operations are divided into three reportable business segments: storage, transportation, and asphalt and fuels marketing.

Storage. We own terminals and storage facilities in the United States, Canada, the Netherlands, including St. Eustatius in the Caribbean, the United Kingdom, Mexico and Turkey providing approximately 69.0 million barrels of storage capacity. Our terminals and storage facilities provide storage and handling services on a fee basis for petroleum products, specialty chemicals and other liquids, including crude oil and other feedstocks.

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Transportation. We own common carrier refined product pipelines in Texas, Oklahoma, Colorado, New Mexico, Kansas, Nebraska, Iowa, South Dakota, North Dakota and Minnesota covering approximately 5,545 miles, consisting of the Central West System, the East Pipeline and the North Pipeline. The East and North Pipelines also include 21 terminals providing storage capacity of 4.6 million barrels, and the East Pipeline includes two tank farms providing storage capacity of 1.2 million barrels. In addition, we own a 2,000 mile anhydrous ammonia pipeline located in Louisiana, Arkansas, Missouri, Illinois, Indiana, Iowa and Nebraska. We also own 872 miles of crude oil pipelines in Texas, Oklahoma, Kansas, Colorado and Illinois, as well as 1.9 million barrels of crude storage in Texas and Oklahoma that is located along those crude oil pipelines. We charge tariffs on a per barrel basis for transporting refined products, crude oil and other feedstocks in our refined product and crude oil pipelines and on a per ton basis for transporting anhydrous ammonia in our Ammonia Pipeline.

Asphalt and Fuels Marketing. Our asphalt and fuels marketing segment includes our refining operations and fuels marketing operations. We refine crude oil to produce asphalt and other refined products from our asphalt operations. Our two asphalt refineries have a combined throughput capacity of 104,000 barrels per day, and the related terminal facilities provide storage capacity of 5.0 million barrels. This segment also include a fuels refinery in San Antonio, Texas with throughput capacity of 14,500 barrel per day. Additionally, as part of our fuels marketing operations, we purchase crude oil and refined petroleum products for resale. The results of operations for the asphalt and fuels marketing segment depend largely on the gross margin between our costs and the sales price of the products we market. Therefore, the results of operations for this segment are more sensitive to changes in commodity prices compared to the operations of our storage and transportation segments. We enter into derivative contracts to mitigate the effect of commodity price fluctuations.

The following factors affect the results of our operations:


•	company-specific factors, such as facility integrity issues and maintenance requirements that impact the throughput rates of our assets;


•	seasonal factors that affect the demand for products transported by and/or stored in our assets and the demand for products we sell, particularly asphalt;


•	industry factors, such as changes in the prices of petroleum products, that affect demand and operations of our competitors;


•	factors such as commodity price volatility and market structure that impact our asphalt and fuels marketing segment; and


•	other factors, such as refinery utilization rates and maintenance turnaround schedules, that impact our refineries, as well as the operations of refineries served by our storage and transportation assets.

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RESULTS OF OPERATIONS

Three Months Ended June 30, 2011 Compared to Three Months Ended June 30, 2010

Financial Highlights

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)



	Three Months Ended June 30,						Change
	2011			2010
Statement of Income Data:
Revenues:
Services revenues	$	199,615		$	195,087		$	4,528
Product sales	1,389,569			929,854			459,715
Total revenues	1,589,184			1,124,941			464,243

Costs and expenses:
Cost of product sales	1,269,448			842,588			426,860
Operating expenses	134,626			119,943			14,683
General and administrative expenses	26,119			22,195			3,924
Depreciation and amortization expense	41,640			38,185			3,455
Total costs and expenses	1,471,833			1,022,911			448,922

Operating income	117,351			102,030			15,321
Equity in earnings of joint venture	2,010			2,102			(92		)
Interest expense, net	(20,622		)	(18,890		)	(1,732		)
Other (expense) income, net	(967		)	14,816			(15,783		)
Income before income tax expense	97,772			100,058			(2,286		)
Income tax expense	5,167			636			4,531
Net income	$	92,605		$	99,422		$	(6,817	)

Net income per unit applicable to limited partners	$	1.27		$	1.43		$	(0.16	)

Weighted-average limited partner units outstanding	64,610,549			62,289,670			2,320,879

Highlights

Net income decreased $6.8 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010. Higher segment operating income was more than offset by increased general and administrative expenses, higher income tax expense and lower other income. Segment operating income increased $19.4 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, mainly due to increased operating income from the asphalt and fuels marketing segment, partially offset by decreased operating income from the transportation segment.

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Segment Operating Highlights

(Thousands of Dollars, Except Barrels/Day Information)



	Three Months Ended June 30,						Change
	2011			2010			Change
Storage:
Throughput (barrels/day)	693,781			684,982			8,799
Throughput revenues	$	19,597		$	19,119		$	478
Storage lease revenues	119,947			109,690			10,257
Total revenues	139,544			128,809			10,735
Operating expenses	74,895			66,955			7,940
Depreciation and amortization expense	21,801			18,989			2,812
Segment operating income	$	42,848		$	42,865		$	(17	)

Transportation:
Refined products pipelines throughput (barrels/day)	501,948			533,979			(32,031		)
Crude oil pipelines throughput (barrels/day)	283,603			398,518			(114,915		)
Total throughput (barrels/day)	785,551			932,497			(146,946		)
Throughput revenues	$	71,562		$	76,958		$	(5,396	)
Operating expenses	28,679			29,543			(864		)
Depreciation and amortization expense	12,720			12,680			40
Segment operating income	$	30,163		$	34,735		$	(4,572	)

Asphalt and Fuels Marketing:
Product sales	$	1,390,318		$	929,990		$	460,328
Cost of product sales	1,274,966			847,065			427,901
Gross margin	115,352			82,925			32,427
Operating expenses	37,664			30,298			7,366
Depreciation and amortization expense	5,535			5,075			460
Segment operating income	$	72,153		$	47,552		$	24,601

Consolidation and Intersegment Eliminations:
Revenues	$	(12,240	)	$	(10,816	)	$	(1,424	)
Cost of product sales	(5,518		)	(4,477		)	(1,041		)
Operating expenses	(6,612		)	(6,853		)	241
Total	$	(110	)	$	514		$	(624	)

Consolidated Information:
Revenues	$	1,589,184		$	1,124,941		$	464,243
Cost of product sales	1,269,448			842,588			426,860
Operating expenses	134,626			119,943			14,683
Depreciation and amortization expense	40,056			36,744			3,312
Segment operating income	145,054			125,666			19,388
General and administrative expenses	26,119			22,195			3,924
Other depreciation and amortization expense	1,584			1,441			143
Consolidated operating income	$	117,351		$	102,030		$	15,321

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Storage

Storage lease revenues increased $10.3 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to:


•	an increase of $4.7 million at our St. Eustatius facility, which was mainly due to completed tank expansion projects, as well as rate escalations, increased reimbursable revenues and higher throughput and related handling fees;


•	an increase of $2.9 million at our UK and Amsterdam terminals, which was due to new customer contracts and the effect of foreign exchange rates; and


•	an increase of $2.2 million related to our Turkey Acquisition in February 2011 and our acquisition of three terminals in Mobile County, Alabama in May 2010.

Operating expenses increased $7.9 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to cancelled capital projects and higher salaries and wages resulting from merit increases and increases in other employee benefit expenses. In addition, operating expenses increased due to the Turkey Acquisition in February 2011 and a full quarter of operating expenses from our three terminals in Mobile County, Alabama acquired in May 2010.

Depreciation and amortization expense increased $2.8 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to the completion of various terminal upgrade and expansion projects and the Turkey Acquisition.

Transportation

Throughputs decreased 146,946 barrels per day and revenues decreased $5.4 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to:


•	a decrease of 75,365 barrels per day and a decrease of $2.4 million on our pipelines serving the Ardmore refinery mainly due to a turnaround in March and April 2011 followed by operational issues and a shift in supply volumes;


•	a decrease of 33,100 barrels per day and a decrease of $2.3 million on the Houston pipeline mainly due to market conditions that favored exporting instead of shipping on our pipeline;


•	a decrease of 22,485 barrels per day and a decrease of $1.6 million on our Corpus Christi to Three Rivers crude oil pipeline due to a shipper receiving product from alternate locations and thus reducing the volume transported on our pipeline;


•	a decrease of 29,899 barrels per day and a decrease of $1.5 million on the Wichita Falls and Capwood crude oil pipelines due to shippers using alternate pipelines; and


•	a decrease of 3,420 barrels per day and a decrease of $1.3 million on the Ammonia Pipeline due to flooding and unfavorable weather conditions in the Midwest.

These decreases were partially offset by:


•	an increase of 14,556 barrels per day and an increase in revenues of $2.8 million on the North Pipeline mainly due to turnaround activity during the second quarter of 2010 at a refinery served by the pipeline; and


•	an increase of 9,511 barrels per day and an increase in revenues of $1.6 million on refined product pipelines serving the McKee refinery due to maintenance activity at the refinery during the second quarter of 2010.

Asphalt and Fuels Marketing

Sales and cost of product sales increased $460.3 million and $427.9 million, respectively, resulting in an increase in total gross margin of $32.4 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010. The increase in total gross margin was primarily due to an increase of $20.3 million in the gross margin from our asphalt operations. Although sales volumes decreased, gross margin per barrel for our asphalt operations increased to $15.50 for the three months ended June 30, 2011, from $9.66 for the three months ended June 30, 2010, due to higher sales prices and tight asphalt supply during the second quarter of 2011. In addition, gross margin improved due to lower inventory costs that resulted from our strategy of building inventory during periods of lower demand.

The gross margin from our fuels marketing operations increased $12.1 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010 due to higher sales prices and volumes in 2011. The San Antonio Refinery Acquisition in April 2011 also contributed to the increase in gross margin.

Operating expenses increased $7.4 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to higher idle capacity costs from our asphalt operations and increased storage rental expenses from our fuels marketing operations.

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Consolidation and Intersegment Eliminations

Revenue, cost of product sales and operating expense eliminations primarily relate to storage and transportation fees charged to the asphalt and fuels marketing segment by the transportation and storage segments.

General

General and administrative expenses increased $3.9 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, primarily due to higher salaries and wages resulting from increased headcount and merit increases and higher compensation expense associated with our long-term incentive plans.

Interest expense, net increased $1.7 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, mainly due to the issuance of $450.0 million of 4.80% senior notes in August 2010. This increase in interest expense was partially offset by the effect of additional fixed-to-floating interest rate swap agreements we entered into in September and October 2010 and an increase in capitalized interest.

Other (expense) income, net changed by $15.8 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010. Other income, net in 2010 included a $13.5 million gain from insurance recoveries, which resulted from insurance claims related to damage in the third quarter of 2008 primarily at our Texas City, Texas terminal caused by Hurricane Ike.

Despite a reduction in pre-tax income, income tax expense increased $4.5 million for the three months ended June 30, 2011, compared to the three months ended June 30, 2010, because income tax expense in 2010 included the reversal of a deferred tax asset valuation allowance.

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RESULTS OF OPERATIONS

Six Months Ended June 30, 2011 Compared to Six Months Ended June 30, 2010

Financial Highlights

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)



	Six Months Ended June 30,						Change
	2011			2010
Statement of Income Data:
Revenues:
Services revenues	$	398,008		$	384,382		$	13,626
Product sales	2,425,792			1,686,088			739,704
Total revenues	2,823,800			2,070,470			753,330

Costs and expenses:
Cost of product sales	2,261,815			1,561,809			700,006
Operating expenses	254,865			241,280			13,585
General and administrative expenses	52,102			49,464			2,638
Depreciation and amortization expense	81,936			76,114			5,822
Total costs and expenses	2,650,718			1,928,667			722,051

Operating income	173,082			141,803			31,279
Equity in earnings of joint venture	4,398			5,117			(719		)
Interest expense, net	(41,079		)	(37,476		)	(3,603		)
Other (expense) income, net	(6,466		)	15,117			(21,583		)
Income before income tax expense	129,935			124,561			5,374
Income tax expense	8,814			5,436			3,378
Net income	$	121,121		$	119,125		$	1,996

Net income per unit applicable to limited partners	$	1.57		$	1.64		$	(0.07	)

Weighted-average limited partner units outstanding	64,610,549			61,255,853			3,354,696

Highlights

Net income increased $2.0 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to an increase in segment operating income, partially offset by a decrease in other income. Segment operating income increased $34.2 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, due to increased operating income from the asphalt and fuels marketing segment and storage segment, partially offset by a decrease in operating income from the transportation segment.

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Segment Operating Highlights

(Thousands of Dollars, Except Barrels/Day Information)



	Six Months Ended June 30,						Change
	2011			2010			Change
Storage:
Throughput (barrels/day)	657,384			663,339			(5,955		)
Throughput revenues	$	36,645		$	36,946		$	(301	)
Storage lease revenues	239,674			218,495			21,179
Total revenues	276,319			255,441			20,878
Operating expenses	141,844			132,033			9,811
Depreciation and amortization expense	42,931			37,655			5,276
Segment operating income	$	91,544		$	85,753		$	5,791

Transportation:
Refined products pipelines throughput (barrels/day)	502,277			530,678			(28,401		)
Crude oil pipelines throughput (barrels/day)	297,159			380,975			(83,816		)
Total throughput (barrels/day)	799,436			911,653			(112,217		)
Throughput revenues	$	144,572		$	152,220		$	(7,648	)
Operating expenses	54,585			58,296			(3,711		)
Depreciation and amortization expense	25,427			25,432			(5		)
Segment operating income	$	64,560		$	68,492		$	(3,932	)

Asphalt and Fuels Marketing:
Product sales	$	2,430,386		$	1,688,920		$	741,466
Cost of product sales	2,276,039			1,573,799			702,240
Gross margin	154,347			115,121			39,226
Operating expenses	71,644			65,349			6,295
Depreciation and amortization expense	10,432			10,116			316
Segment operating income	$	72,271		$	39,656		$	32,615

Consolidation and Intersegment Eliminations:
Revenues	$	(27,477	)	$	(26,111	)	$	(1,366	)
Cost of product sales	(14,224		)	(11,990		)	(2,234		)
Operating expenses	(13,208		)	(14,398		)	1,190
Total	$	(45	)	$	277		$	(322	)

Consolidated Information:
Revenues	$	2,823,800		$	2,070,470		$	753,330
Cost of product sales	2,261,815			1,561,809			700,006
Operating expenses	254,865			241,280			13,585
Depreciation and amortization expense	78,790			73,203			5,587
Segment operating income	228,330			194,178			34,152
General and administrative expenses	52,102			49,464			2,638
Other depreciation and amortization expense	3,146			2,911			235
Consolidated operating income	$	173,082		$	141,803		$	31,279

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Storage

Storage lease revenues increased $21.2 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to:


•	an increase of $9.1 million at our St. Eustatius facility, which was mainly due to completed tank expansion projects, as well as rate escalations, increased reimbursable revenues and higher throughput and related handling fees;


•	an increase of $5.8 million related to our acquisition of three terminals in Mobile County, Alabama in May 2010 and the Turkey Acquisition; and


•	an increase of $3.5 million at our UK and Amsterdam terminals, which was due to new customer contracts, increased throughput and the effect of foreign exchange rates.

Operating expenses increased $9.8 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to cancelled capital projects, higher rail and dock fees at certain terminals in our gulf coast region and increased costs at our St. Eustatius facility. Operating expenses also increased as a result of higher reimbursable and power expenses, as well as the Turkey Acquisition in February 2011 and a full six months of operating expenses associated with our three terminals in Mobile County, Alabama acquired in May 2010.

Depreciation and amortization expense increased $5.3 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to the completion of various terminal upgrade and expansion projects, the Turkey Acquisition and our acquisition of three terminals in Mobile County, Alabama in May 2010.

Transportation

Throughputs decreased 112,217 barrels per day and revenues decreased $7.6 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to:


•	a decrease of 40,033 barrels per day and a decrease of $5.9 million on the Houston pipeline mainly due to market conditions that favored exporting instead of shipping on our pipeline;


•	a decrease of 67,955 barrels per day and a decrease of $4.3 million on our pipelines serving the Ardmore refinery mainly due to a turnaround in March and April 2011 followed by operational issues and a shift in supply volumes; and


•	a decrease of 9,158 barrels per day and a decrease of $1.9 million on our Corpus Christi to Three Rivers crude oil pipeline due to a shipper receiving product from alternate locations and thus reducing the volume transported on our pipeline.

These decreases were partially offset by:


•	an increase of 9,764 barrels per day and an increase in revenues of $3.9 million on the North Pipeline mainly due to turnaround activity during the second quarter of 2010 at a refinery served by the pipeline; and


•	an increase of 18,935 barrels per day and an increase in revenues of $3.3 million on pipelines serving the McKee refinery mainly due to increased production in 2011 and operational issues and turnaround activity at the refinery in 2010.

Operating expenses decreased $3.7 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to a reduction in overhead expenses, as well as lower maintenance and power expenses.

Asphalt and Fuels Marketing

Sales and cost of product sales increased $741.5 million and $702.2 million, respectively, resulting in an increase in total gross margin of $39.2 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010. The increase in total gross margin was primarily due to an increase of $16.6 million in the gross margin from our asphalt operations. Although sales volumes decreased, gross margin per barrel for our asphalt operations increased to $12.70 for the six months ended June 30, 2011, from $8.16 for the six months ended June 30, 2010, due to higher sales prices and tight asphalt supply during the second quarter of 2011. In addition, gross margin improved due to lower inventory costs that resulted from our strategy of building inventory during periods of lower demand.

Gross margin from our fuels marketing operations increased $22.6 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010 due to higher sales prices and volumes in 2011. The San Antonio Refinery Acquisition in April 2011 also contributed to the increase in gross margin.

Operating expenses increased $6.3 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to higher idle capacity costs at our asphalt refineries and increased rental expenses associated with our fuels marketing operations.

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Consolidation and Intersegment Eliminations

General

General and administrative expenses increased $2.6 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, primarily due to higher salaries and wages resulting from increased headcount and merit increases.

Interest expense, net increased $3.6 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, mainly due to the issuance of $450.0 million of 4.80% senior notes in August 2010. This increase in interest expense was partially offset by the effect of additional fixed-to-floating interest rate swap agreements we entered into in September and October 2010 and an increase in capitalized interest.

Other (expense) income, net changed by $21.6 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010. Other expense in 2011 included $5.0 million of expense associated with the early termination of a third-party storage agreement at our Paulsboro, New Jersey asphalt refinery. Other income in 2010 included a $13.5 million gain from insurance recoveries, which resulted from insurance claims related to damage in the third quarter of 2008 primarily at our Texas City, Texas terminal caused by Hurricane Ike.

Income tax expense increased $3.4 million for the six months ended June 30, 2011, compared to the six months ended June 30, 2010, mainly due to the reversal of a deferred tax asset valuation allowance in 2010.

OUTLOOK

Overall, we expect our operating income for 2011 to be higher than 2010 due mainly to increases in our storage segment and our asphalt and fuels marketing segment.

Storage Segment

For the full year 2011, we expect the storage segment earnings to increase compared to 2010. We expect to benefit from internal growth projects completed in the second half of 2010 as well as those expected to be completed in 2011, mainly at our St. Eustatius terminal in the Caribbean and our St. James, Louisiana terminal.

Transportation Segment

We expect the transportation segment earnings for the full year 2011 to be lower than 2010. Throughputs are forecasted to be lower in 2011 mainly due to changing market conditions and planned turnaround activity at refineries served by our pipelines. However, the tariffs on our pipelines regulated by the Federal Energy Regulatory Commission, which adjust annually based upon changes in the producer price index, are expected to increase by 6.9 percent effective July 1, 2011, when the adjustment takes effect. In addition, we completed a pipeline expansion project at the end of the second quarter that serves Eagle Ford Shale production and we expect to benefit from this pipeline for the remainder of 2011. The pipeline expansion and the tariff increase effective July 1, 2011 will only partially offset the impact from the lower throughputs for the full year 2011, compared to 2010.

Asphalt and Fuels Marketing Segment

We expect the asphalt and fuels marketing segment results to increase for the full year 2011 compared to 2010. Our operations are expected to benefit from a full year of heavy fuel and bunker fuel sales in new markets we entered into in 2010, and from our San Antonio Refinery Acquisition, which closed on April 19, 2011.

Our outlook could change depending on, among other things, the prices of crude oil, changes to refinery maintenance schedules, and other factors that affect overall demand for the products we store, transport and sell as well as changes in commodity prices for the products we market.

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LIQUIDITY AND CAPITAL RESOURCES

General

Our primary cash requirements are for distributions to partners, working capital requirements, including inventory purchases, debt service, capital expenditures, acquisitions and operating expenses. On an annual basis, we attempt to fund our operating expenses, interest expense, reliability capital expenditures and distribution requirements with cash generated from our operations. If we do not generate sufficient cash from operations to meet those requirements, we utilize available borrowing capacity under our revolving credit agreement and, to the extent necessary, funds raised through equity or debt offerings under our shelf registration statements. Additionally, we typically fund our strategic capital expenditures from external sources, primarily borrowings under our revolving credit agreement or funds raised through equity or debt offerings. However, our ability to raise funds by issuing debt or equity depends on many factors beyond our control. The volatility of the capital and credit markets could restrict our ability to issue debt or equity or may increase our cost of capital beyond rates acceptable to us.

Cash Flows for the Six Months Ended June 30, 2011 and 2010

The following table summarizes our cash flows from operating, investing and financing activities:



	Six Months Ended June 30,
	2011			2010
	(Thousands of Dollars)
Net cash provided by (used in):
Operating activities	$	1,824		$	13,653
Investing activities	(262,133		)	(150,278		)
Financing activities	206,840			107,802
Effect of foreign exchange rate changes on cash	1,224			1,371
Net decrease in cash and cash equivalents	$	(52,245	)	$	(27,452	)

Net cash provided by operating activities for the six months ended June 30, 2011 was $1.8 million, compared to $13.7 million for the six months ended June 30, 2010, primarily due to higher investments in working capital in 2011 compared to the same period in 2010. We increased our working capital $201.7 million in 2011, compared to $162.0 million in 2010. The higher investment in working capital in 2011 was partially offset by a decrease in non-cash gains in 2011 compared to 2010. For the six months ended June 30, 2010, net cash provided by operating activities included a $13.5 million adjustment representing a gain from insurance recoveries that resulted from insurance claims related to damage primarily at our Texas City, Texas terminal caused by Hurricane Ike.

For the six months ended June 30, 2011, net cash provided by operating activities, proceeds from long-term debt borrowings, net of repayments, combined with cash on hand, were used to fund our distributions to unitholders and our general partner, capital expenditures primarily related to various terminal projects and two acquisitions.

For the six months ended June 30, 2010, cash from operating activities, proceeds from long-term and short-term debt borrowings, net of repayments, our issuance of common units and cash on hand were used to fund our distributions to unitholders and our general partner and capital expenditures primarily related to various terminal projects and an acquisition. The capital expenditures were primarily related to projects at our St. Eustatius and Texas City terminals and our corporate office. Cash flows from investing activities also include insurance proceeds of $13.5 million related to damages caused by Hurricane Ike in the third quarter of 2008 primarily at our Texas City terminal.

2007 Revolving Credit Agreement

As of June 30, 2011, we had $429.4 million available for borrowing under our $1.2 billion five-year revolving credit agreement (the 2007 Revolving Credit Agreement). Due to a covenant in our 2007 Revolving Credit Agreement that requires us to maintain, as of the end of each four consecutive fiscal quarters, a consolidated debt coverage ratio not to exceed 5.00-to-1.00, we may not be able to borrow the maximum available amount. On March 7, 2011, we amended the 2007 Revolving Credit Agreement to exclude unused proceeds from the Gulf Opportunity Zone bond issuances from total indebtedness in the calculation of the consolidated debt coverage ratio. As of June 30, 2011, the consolidated debt coverage ratio was 4.3x. The 2007 Revolving Credit Agreement matures in December 2012, and we do not have any other significant debt maturing until 2012.

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Shelf Registration Statements

On April 29, 2011, the Securities and Exchange Commission declared effective our shelf registration statement on Form S-3, which permits us to offer and sell various types of securities, including NuStar Energy common units and debt securities of NuStar Logistics and NuPOP, having an aggregate value of up to $200.0 million (the 2011 Shelf Registration Statement). The 2011 Shelf Registration Statement is in addition to our shelf registration statement on Form S-3 the Securities and Exchange Commission declared effective in May 2010.

On May 23, 2011, in connection with the 2011 Shelf Registration Statement, we entered into an Equity Distribution Agreement (the Equity Distribution Agreement) with Citigroup Global Markets Inc. (Citigroup). Under the Equity Distribution Agreement, we may from time to time sell an aggregate of up to $200.0 million NuStar Energy common units representing limited partner interests using Citigroup, as our sales agent. Sales of common units will be made by means of ordinary brokers' transactions on the New York Stock Exchange at market prices, in block transactions or as otherwise agreed by us and Citigroup. Under the terms of the Equity Distribution Agreement, we may also sell common units to Citigroup as principal for its own account at a price to be agreed upon at the time of sale.

If the capital markets become more volatile, our access to the capital markets may be limited, or we could face increased costs. In addition, it is possible that our ability to access the capital markets may be limited at a time when we would like or need to do so, which could have an impact on our ability to refinance maturing debt and/or react to changing economic and business conditions.

Capital Requirements

Our operations are capital intensive, requiring significant investments to maintain, upgrade or enhance existing operations and to comply with environmental and safety laws and regulations. Our capital expenditures consist of:


•	reliability capital expenditures, such as those required to maintain equipment reliability and safety and to address environmental and safety regulations; and


•	strategic capital expenditures, such as those to expand and upgrade pipeline capacity or asphalt refinery operations and to construct new pipelines, terminals and storage tanks. In addition, strategic capital expenditures may include acquisitions of pipelines, terminals or storage tank assets, as well as certain capital expenditures related to support functions.

During the six months ended June 30, 2011, our reliability capital expenditures totaled $26.2 million, consisting of $20.6 million primarily related to maintenance upgrade projects at our terminals, which is classified as "Reliability capital expenditures" in the consolidated statements of cash flows, and $5.6 million of turnaround expenditures at our asphalt refineries, which is classified as "Investment in other long-term assets" in our consolidated statements of cash flows. Strategic capital expenditures for the six months ended June 30, 2011 totaled $135.8 million and were primarily related to projects at our St. James, Louisiana and St. Eustatius terminals and our corporate office.

For the full year 2011, we expect to incur approximately $430.0 million of capital expenditures, including $60.0 million for reliability capital projects and $370.0 million for strategic capital projects, which do not include acquisitions. Thus far in 2011, we have spent approximately $100.0 million, including working capital, related to the Turkey Acquisition and the San Antonio Refinery Acquisition. We continue to evaluate our capital budget and make changes as economic conditions warrant. Depending upon current economic conditions, our actual capital expenditures for 2011 may exceed or be lower than the budgeted amounts. We believe cash generated from operations, combined with other sources of liquidity previously described, will be sufficient to fund our capital expenditures in 2011, and our internal growth projects can be accelerated or scaled back depending on the condition of the capital markets.

Working Capital Requirements

Our asphalt and fuels marketing segment requires us to make substantial investments in working capital. Increases in the prices of the commodities we purchase cause our working capital requirements to increase, which reduces our liquidity. Our working capital requirements vary with the seasonal nature of asphalt demand as we employ our asphalt winterfill strategy to build and store inventories during periods of lower demand in order to sell it during periods of higher demand. This seasonal variance in demand also affects our accounts receivable and accounts payable balances, which vary depending on timing of payments.

Within working capital, our inventory balances increased by $239.8 million during the six months ended June 30, 2011, compared to $190.6 million during the six months ended June 30, 2010, due to rising crude oil prices in 2011. In addition, accounts receivable increased by $139.1 million during the six months ended June 30, 2011, compared to $73.3 million during the six months ended June 30, 2010, mainly due to the timing of payments and higher overall sales, resulting mainly from increased crude trading and bunker activity and the San Antonio Refinery Acquisition. Other current assets increased $17.8 million during the six months ended June 30, 2011, compared to a decrease of $27.2 million during the six months ended

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June 30, 2010, primarily due to variations in our margin deposits related to our derivative instruments and an increase in prepaid assets in 2011.

Higher inventory balances also result in higher amounts of accounts payable, offsetting the impact to working capital. In 2011, accounts payable increased $202.2 million, compared to $94.4 million in 2010, due to higher inventory costs and the timing of payments.

Distributions

The following table reflects the allocation of total cash distributions to the general and limited partners applicable to the period in which the distributions were earned:



	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	1,627	$	1,576	$	3,219	$	3,043
General partner incentive distribution	8,963		8,369		17,531		16,168
Total general partner distribution	10,590		9,945		20,750		19,211
Limited partners’ distribution	70,749		68,809		140,205		132,935
Total cash distributions	$	81,339	$	78,754	$	160,955	$	152,146

Cash distributions per unit applicable to limited partners	$	1.095	$	1.065	$	2.170	$	2.130

Distributions declared for the quarter are paid within 45 days following the end of each quarter based on the partnership interests outstanding as of a record date that is set after the end of each quarter.

Debt Obligations

We are a party to the following debt agreements:


•	the 2007 Revolving Credit Agreement due December 10, 2012, with a balance of $489.1 million as of June 30, 2011;


•	NuStar Logistics’ 6.875% senior notes due July 15, 2012 with a face value of $100.0 million; 6.05% senior notes due March 15, 2013 with a face value of $229.9 million; 7.65% senior notes due April 15, 2018 with a face value of $350.0 million; and 4.80% senior notes due September 1, 2020 with a face value of $450.0 million;


•	NuPOP’s 7.75% senior notes due February 15, 2012; and 5.875% senior notes due June 1, 2013 with an aggregate face value of $500.0 million;


•	$55.4 million revenue bonds due June 1, 2038; $100.0 million revenue bonds due July 1, 2040; $50.0 million revenue bonds due October 1, 2040; and $85.0 million revenue bonds due December 1, 2040 associated with the St. James terminal expansion (Gulf Opportunity Zone Revenue Bonds);


•	the £21 million term loan due December 11, 2012 (UK Term Loan); and


•	the $12.0 million note payable in annual installments through December 31, 2015 to the Port of Corpus Christi Authority of Nueces County, Texas, with a balance of $1.8 million as of June 30, 2011, associated with the construction of a crude oil storage facility in Corpus Christi, Texas.

Management believes that, as of June 30, 2011, we are in compliance with all ratios and covenants of both the 2007 Revolving Credit Agreement and the UK Term Loan, which has substantially the same covenants as the 2007 Revolving Credit Agreement. Our other long-term debt obligations do not contain any financial covenants that are different than those contained in the 2007 Revolving Credit Agreement. However, a default under any of our debt instruments would be considered an event of default under all of our debt instruments.

Please refer to Note 4 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a more detailed discussion on certain of our long-term debt agreements.

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Interest Rate Swaps

As of June 30, 2011 and December 31, 2010, we were a party to fixed-to-floating interest rate swap agreements and forward-starting swap agreements for the purpose of hedging interest rate risk. The weighted-average interest rate that we paid under our fixed-to-floating interest rate swaps was 2.5% as of June 30, 2011.

The following table aggregates information on our interest rate swap agreements:



	Notional Amount				Fair Value
	June 30, 2011		December 31, 2010		June 30, 2011			December 31, 2010
	(Thousands of Dollars)
Type of interest rate swap agreements:
Fixed-to-floating	$	490,000	$	617,500	$	(19,318	)	$	(18,820	)
Forward-starting	$	500,000	$	500,000	$	22,170		$	35,000

During the six months ended June 30, 2011, we terminated interest rate swap agreements with an aggregate notional amount of $167.5 million associated with our 6.875% and 6.05% senior notes. We received $9.1 million in connection with the termination, which is being amortized into "Interest expense, net" over the remaining lives of the 6.875% and 6.05% senior notes. Please refer to Note 7 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a more detailed discussion of our interest rate swaps.

Environmental, Health and Safety

We are subject to extensive federal, state and local environmental and safety laws and regulations, including those relating to the discharge of materials into the environment, waste management, pollution prevention measures, pipeline integrity and operator qualifications, among others. Because more stringent environmental and safety laws and regulations are continuously being enacted or proposed, the level of future expenditures required for environmental, health and safety matters is expected to increase.

Contingencies

We are subject to certain loss contingencies, the outcomes of which could have an adverse effect on our cash flows and results of operations, as further disclosed in Note 5 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements.”

RELATED PARTY TRANSACTIONS

Please refer to Note 8 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a detailed discussion of our related party transactions.

CRITICAL ACCOUNTING POLICIES

The preparation of financial statements in accordance with United States generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Our critical accounting policies are disclosed in our Annual Report on Form 10-K for the year ended December 31, 2010.

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Item 3.	Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

We manage our exposure to changing interest rates principally through the use of a combination of fixed-rate debt and variable-rate debt. In addition, we utilize fixed-to-floating interest rate swap agreements to manage a portion of the exposure to changing interest rates by converting certain fixed-rate debt to variable-rate debt. We also enter into forward-starting interest rate swap agreements to lock in the rate on the interest payments related to forecasted debt issuances. Borrowings under the 2007 Revolving Credit Agreement and Gulf Opportunity Zone Revenue Bonds expose us to increases in the underlying interest rates.

The following tables provide information about our long-term debt and interest rate derivative instruments, all of which are sensitive to changes in interest rates. For long-term debt, principal cash flows and related weighted-average interest rates by expected maturity dates are presented. For our fixed-to-floating interest rate swaps, the table presents notional amounts and weighted-average interest rates by expected (contractual) maturity dates. Weighted-average variable rates are based on implied forward interest rates in the yield curve at the reporting date.



	June 30, 2011
	Expected Maturity Dates
	2011			2012			2013			2014			2015			There- after			Total			Fair Value
	(Thousands of Dollars, Except Interest Rates)
Long-term Debt:
Fixed rate	$	832		$	384,664		$	479,994		$	—		$	—		$	800,000		$	1,665,490		$	1,783,908
Weighted average interest rate	8.0		%	7.4		%	6.0		%	—			—			6.0		%	6.3		%
Variable rate	$	—		$	489,129		$	—		$	—		$	—		$	290,440		$	779,569		$	769,149
Weighted average interest rate	—			0.9		%	—			—			—			0.1		%	0.6		%
Interest Rate Swaps Fixed–to-Floating:
Notional amount	$	—		$	—		$	—		$	—		$	—		$	490,000		$	490,000		$	(19,080	)
Weighted average pay rate	2.6		%	2.9		%	3.9		%	4.9		%	5.8		%	6.8		%	5.4		%
Weighted average receive rate	5.0		%	5.0		%	5.0		%	5.0		%	5.0		%	4.9		%	5.0		%



	December 31, 2010
	Expected Maturity Dates
	2011			2012			2013			2014			2015			There- after			Total			Fair Value
	(Thousands of Dollars, Except Interest Rates)
Long-term Debt:
Fixed rate	$	832		$	383,687		$	479,986		$	—		$	—		$	800,000		$	1,664,505		$	1,775,842
Weighted average interest rate	8.0		%	7.4		%	6.0		%	—			—			6.0		%	6.3		%
Variable rate	$	—		$	188,282		$	—		$	—		$	—		$	290,440		$	478,722		$	473,348
Weighted average interest rate	—			1.0		%	—			—			—			0.3		%	0.6		%
Interest Rate Swaps Fixed–to-Floating:
Notional amount	$	—		$	60,000		$	107,500		$	—		$	—		$	450,000		$	617,500		$	(18,820	)
Weighted average pay rate	2.5		%	3.3		%	4.3		%	5.3		%	6.1		%	6.8		%	5.4		%
Weighted average receive rate	5.2		%	5.2		%	5.0		%	4.8		%	4.8		%	4.8		%	4.9		%

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The following table presents information regarding our forward-starting interest rate swap agreements:



Notional Amount		Period of Hedge	Weighted- Average Fixed Rate		Fair Value
					June 30, 2011		December 31, 2010
(Thousands of Dollars)					(Thousands of Dollars)
$	125,000	03/13 - 03/23	3.5	%	$	5,781	$	8,717
150,000		06/13 - 06/23	3.5	%	8,008		11,243
225,000		02/12 - 02/22	3.1	%	8,381		15,040
$	500,000		3.3	%	$	22,170	$	35,000

Commodity Price Risk

Since the operations of our asphalt and fuels marketing segment exposes us to commodity price risk, we enter into derivative instruments to mitigate the effect of commodity price fluctuations. The derivative instruments we use consist primarily of futures and swaps contracts. We have a risk management committee that oversees our trading controls and procedures and certain aspects of risk management. Our risk management committee also reviews all new risk management strategies in accordance with our risk management policy, which was approved by our board of directors.

We record commodity derivative instruments in the consolidated balance sheets as assets or liabilities at fair value. We recognize mark-to-market adjustments for derivative instruments designated and qualifying as fair value hedges (Fair Value Hedges) and the related change in the fair value of the associated hedged physical inventory or firm commitment within “Cost of product sales.” For derivative instruments designated and qualifying as cash flow hedges (Cash Flow Hedges), we record the effective portion of mark-to-market adjustments as a component of “Accumulated other comprehensive income” until the underlying hedged forecasted transactions occur and are recognized in income. For derivative instruments that do not qualify for hedge accounting (Economic Hedges and Other Derivatives), we record the mark-to-market adjustments in “Cost of product sales.”

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The commodity contracts disclosed below represent only those contracts exposed to commodity price risk at the end of the period. Please refer to Note 7 of Condensed Notes to Consolidated Financial Statement in Item 1. “Financial Statements” for the volume and related fair value of all commodity contracts.



	June 30, 2011
	Contract Volumes	Weighted Average				Fair Value of Current Asset (Liability)
	Contract Volumes	Pay Price		Receive Price		Fair Value of Current Asset (Liability)
	(Thousands of Barrels)					(Thousands of Dollars)
Fair Value Hedges:
Futures – long:
(crude oil and refined products)	156	$	101.30	N/A		$	(193	)
Futures – short:
(crude oil and refined products)	515	N/A		$	109.50	$	(2,010	)
Swaps – long:
(refined products)	115	$	94.59	N/A		$	(267	)
Swaps – short:
(refined products)	370	N/A		$	97.27	$	134

Cash Flow Hedges:
Swaps – long:
(crude oil)	10,622	106.90		N/A		$	(72,843	)
Swaps – short:
(refined products)	10,622	N/A		127.68		$	57,614

Economic Hedges and Other Derivatives:
Futures – long:
(crude oil and refined products)	126	$	101.92	N/A		$	528
Futures – short:
(crude oil and refined products)	148	N/A		$	95.99	$	(506	)
Swaps – long:
(refined products)	310	$	98.63	N/A		$	297
Swaps – short:
(refined products)	765	N/A		$	99.27	$	(1,108	)
Forward purchase contracts:
(crude oil)	5,628	$	104.64	N/A		$	(3,432	)
Forward sales contracts:
(crude oil)	5,628	N/A		$	104.71	$	8,367

Total fair value of open positions exposed to commodity price risk						$	(13,419	)

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	December 31, 2010
	Contract Volumes	Weighted Average				Fair Value of Current Asset (Liability)
	Contract Volumes	Pay Price		Receive Price		Fair Value of Current Asset (Liability)
	(Thousands of Barrels)					(Thousands of Dollars)
Fair Value Hedges:
Futures – short:
(crude oil and refined products)	436	N/A		$	96.00	$	(1,015	)
Swaps – long:
(refined products)	380	$	76.05	N/A		$	(557	)
Swaps – short:
(refined products)	823	N/A		$	74.53	$	(2,541	)

Economic Hedges and Other Derivatives:
Futures – long:
(crude oil and refined products)	278	$	93.80	N/A		$	802
Futures – short:
(crude oil and refined products)	936	N/A		$	100.74	$	(2,102	)
Swaps – long:
(refined products)	385	$	76.27	N/A		$	1,684
Swaps – short:
(refined products)	157	N/A		$	73.22	$	(698	)
Forward purchase contracts:
(crude oil)	4,680	$	85.81	N/A		$	38,434
Forward sales contracts:
(crude oil)	4,680	N/A		$	86.48	$	(38,989	)

Total fair value of open positions exposed to commodity price risk						$	(4,982	)

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Item 4.	Controls and Procedures


(a)	Evaluation of disclosure controls and procedures.

Our management has evaluated, with the participation of the principal executive officer and principal financial officer of NuStar GP, LLC, the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report, and has concluded that our disclosure controls and procedures were effective as of June 30, 2011.


(b)	Changes in internal control over financial reporting.

There has been no change in our internal control over financial reporting that occurred during our last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION


Item 6.	Exhibits



Exhibit Number		Description
10.01		NuStar GP, LLC 2000 Third Amended and Restated Long-Term Incentive Plan (incorporated by reference to Exhibit 10.01 of NuStar Energy L.P.’s Current Report on Form 8-K filed May 10, 2011)

10.02		Equity Distibution Agreement, dated May 23, 2011 by and among NuStar Energy L.P., Riverwalk Logistics, L.P., NuStar GP, LLC and Citigroup Global Markets Inc. (incorporated by reference to Exhibit 1.1 of NuStar Energy L.P.’s Current Report on Form 8-K filed May 24, 2011)

*12.1		Statement of Computation of Ratio of Earnings to Fixed Charges

*31.01		Rule 13a-14(a) Certification (under Section 302 of the Sarbanes-Oxley Act of 2002) of principal executive officer

*31.02		Rule 13a-14(a) Certification (under Section 302 of the Sarbanes-Oxley Act of 2002) of principal financial officer

*32.01		Section 1350 Certification (under Section 906 of the Sarbanes-Oxley Act of 2002) of principal executive officer

*32.02		Section 1350 Certification (under Section 906 of the Sarbanes-Oxley Act of 2002) of principal financial officer

**101		The following interactive data files pursuant to Rule 405 of Regulation S-T from NuStar Energy L.P.’s Form 10-Q for the quarter ended June 30, 2011, formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Cash Flows, and (iv) Condensed Notes to Consolidated Financial Statements.

*	Filed herewith.
**	Filed electronically herewith.

	In accordance with Rule 406T of regulation S-T, the XBRL information in Exhibit 101 to this quarterly report on Form 10-Q shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (Exchange Act), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act. The financial information contained in the XBRL-related documents is “unaudited” or “unreviewed.”

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

NUSTAR ENERGY L.P.

(Registrant)

By: Riverwalk Logistics, L.P., its general partner

By: NuStar GP, LLC, its general partner



By:		/s/ Curtis V. Anastasio
		Curtis V. Anastasio
		President and Chief Executive Officer
		August 4, 2011

By:		/s/ Steven A. Blank
		Steven A. Blank
		Senior Vice President, Chief Financial Officer and Treasurer
		August 4, 2011

By:		/s/ Thomas R. Shoaf
		Thomas R. Shoaf
		Vice President and Controller
		August 4, 2011