FAIR VALUE MEASUREMENTS

12 Months Ended

Dec. 31, 2015

The tables below present information about the Company's financial assets and liabilities measured and recorded at fair value on a recurring basis and indicate the fair value hierarchy of the inputs utilized to determine the fair values as of December 31, 2015 and 2014.

We have elected to offset the fair value amounts recognized for multiple derivative contracts executed with the same counterparty; however, fair value amounts by hierarchy level are presented on a gross basis in the tables below. We have posted cash margin with various counterparties to support hedging and trading activities. The cash

margin posted is required by counterparties as collateral deposits and cannot be offset against the fair value of open

contracts except in the event of default. We have no derivative contracts that are subject to master netting arrangements that are reflected gross on the balance sheet.



	As of December 31, 2015
	Fair Value Hierarchy
	Level 1		Level 2		Level 3		Total Gross Fair Value		Effect of Counter-party Netting		Net Carrying Value on Balance Sheet
Assets:
Money market funds	$	631,280	$	—	$	—	$	631,280	N/A		$	631,280
Non-qualified pension plan assets	9,325		—		—		9,325		N/A		9,325
Commodity contracts	63,810		31,256		3,543		98,609		(52,482	)	46,127
Derivatives included with inventory supply arrangement obligations	—		35,511		—		35,511		—		35,511
Liabilities:
Commodity contracts	49,960		2,522		—		52,482		(52,482	)	—
Catalyst lease obligations	—		31,802		—		31,802		—		31,802



	As of December 31, 2014
	Level 1		Level 2		Level 3		Total Gross Fair Value		Effect of Counter-party Netting		Net Carrying Value on Balance Sheet
Assets:
Money market funds	$	5,575	$	—	$	—	$	5,575	N/A		$	5,575
Non-qualified pension plan assets	5,494		—		—		5,494		N/A		5,494
Commodity contracts	415,023		12,093		1,715		428,831		(397,676	)	31,155
Derivatives included with inventory intermediation arrangement	—		94,834		—		94,834		—		94,834
Derivatives included with inventory supply arrangement obligations	—		4,251		—		4,251		—		4,251
Liabilities:
Commodity contracts	390,144		7,338		194		397,676		(397,676	)	—
Catalyst lease obligations	—		36,559		—		36,559		—		36,559

The valuation methods used to measure financial instruments at fair value are as follows:


•	Money market funds categorized in Level 1 of the fair value hierarchy are measured at fair value based on quoted market prices and included within cash and cash equivalents.


•	Non-qualified pension plan assets categorized in Level 1 of the hierarchy are measured at fair value using a market approach based on published net asset values of mutual funds and included within deferred charges and other assets, net.


•	The commodity contracts categorized in Level 1 of the fair value hierarchy are measured at fair value based on quoted prices in an active market. The commodity contracts categorized in Level 2 of the fair value hierarchy are measured at fair value using a market approach based upon future commodity prices for similar instruments quoted in active markets.

•

The commodity contracts categorized in Level 3 of the fair value hierarchy consist of commodity price swap contracts that relate to forecasted purchases of crude oil for which quoted forward market prices are not readily available due to market illiquidity. The forward price used to value these swaps was derived using broker quotes, prices from other third party sources and other available market based data.


•	The derivatives included with inventory supply arrangement obligations, derivatives included with inventory intermediation agreement obligations and the catalyst lease obligations are categorized in Level 2 of the fair value hierarchy and are measured at fair value using a market approach based upon commodity prices for similar instruments quoted in active markets.

The table below summarizes the changes in fair value measurements of commodity contracts categorized in Level 3 of the fair value hierarchy:



	Year Ended December 31,
	2015			2014
Balance at beginning of period	$	1,521		$	(23,365	)
Purchases	—			—
Settlements	(15,222		)	(22,055		)
Unrealized loss included in earnings	17,244			46,941
Transfers into Level 3	—			—
Transfers out of Level 3	—			—
Balance at end of period	$	3,543		$	1,521

There were no transfers between levels during the years ended December 31, 2015 and 2014, respectively.

Fair value of debt

The table below summarizes the fair value and carrying value as of December 31, 2015 and 2014.



	December 31, 2015				December 31, 2014
	Carrying value		Fair value		Carrying value		Fair value
Senior Secured Notes due 2020 (a)	$	669,644	$	706,246	$	668,520	$	675,580
Senior Secured Notes due 2023 (a)	500,000		492,452		—		—
Revolving Loan (b)	—		—		—		—
Rail Facility (b)	67,491		67,491		37,270		37,270
Catalyst leases (c)	31,802		31,802		36,559		36,559
	1,268,937		1,297,991		742,349		749,409
Less - Current maturities	—		—		—		—
Less - Unamortized deferred financing costs	$	32,217	n/a		$	30,128	n/a
Long-term debt	$	1,236,720	$	1,297,991	$	712,221	$	749,409

(a) The estimated fair value, categorized as a Level 2 measurement, was calculated based on the present value of future expected payments utilizing implied current market interest rates based on quoted prices of the Senior Secured Notes.

(b) The estimated fair value approximates carrying value, categorized as a Level 2 measurement, as these borrowings bear interest based upon short-term floating market interest rates.

(c) Catalyst leases are valued using a market approach based upon commodity prices for similar instruments quoted in active markets and are categorized as a Level 2 measurement. The Company has elected the fair value option for accounting for its catalyst lease repurchase obligations as the Company's liability is directly impacted by the change in fair value of the underlying catalyst.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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