v3.7.0.1

CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 1,618,400	$ (430,500)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion	867,000	826,000
Non-cash loss on derivative value		430,400
Accretion of asset retirement obligations	89,000	84,800
Gain on sale of gas and oil properties – Niobrara	(514,500)
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable trade-affiliate	(502,100)	417,000
Increase in asset retirement receivable-affiliate	(85,800)	(34,800)
Increase in accounts payable trade-affiliate		130,700
Increase (decrease) in accrued liabilities	15,800	(20,400)
Asset retirement obligations settled	(4,300)
Net cash provided by operating activities	1,483,500	1,403,200
Cash flows from investing activities:
Proceeds from the sale of tangible equipment	46,200	16,300
Net cash provided by investing activities	46,200	16,300
Cash flows from financing activities:
Distributions to partners	(1,689,400)	(1,094,100)
Net cash used in financing activities	(1,689,400)	(1,094,100)
Net change in cash	(159,700)	325,400
Cash beginning of period	171,800	181,200
Cash at end of period	12,100	$ 506,600
Sales proceeds receivable	17,800
Niobrara Shale in Colorado
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of gas and oil properties – Niobrara	(514,500)
Cash flows from financing activities:
Write-off accrued property taxes associated with sale of Colorado properties	$ (65,200)

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Proceeds receivable from sale of oil and gas property.

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Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

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Atlas Resources Series 28-2010 L.P. 10-Q