Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligation (Tables)

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Asset Retirement Obligation (Tables)
9 Months Ended
Sep. 30, 2018
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Changes in Asset Retirement Obligation

The following table provides a reconciliation of the changes in the estimated present value of asset retirement obligations for the nine months ended September 30, 2018 and December 31, 2017.

 

    For the period ended  
    September 30, 2018     December 31, 2017  
             
Beginning asset retirement obligations   $ 303,327     $ 291,659  
Liabilities established     23,709        
Accretion expense     9,574       11,668  
Ending asset retirement obligations   $ 336,610     $ 303,327