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6. Asset Retirement Obligation
12 Months Ended
Mar. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]  
6. Asset Retirement Obligation
For the purpose of determining the fair value of the asset retirement obligation incurred during the year ended March 31, 2014, the Company assumed an inflation rate of 4.07%, an estimated average asset life of 30 years, and a credit adjusted risk free interest rate of 7.85%.

 

The following reconciles the value of the asset retirement obligation for the periods presented.  This included a short-term obligation of $317,000 and $296,000 as of March 31, 2014 and 2013, respectively, which was a component of accrued liabilities on the balance sheets:

 

    2014     2013  
             
Asset retirement obligation, beginning of year   $ 2,105,000     $ 1,826,000  
Liabilities settled     (7,000     -  
Liabilities incurred     85,000       69,000  
Revisions in estimated liabilities     -       33,000  
Accretion     202,000       177,000  
                 
Asset retirement obligation, end of year     2,385,000       2,105,000  
                 
Less current portion     (317,000 )     (296,000 )
                 
Asset retirement obligation, less current portion   $ 2,068,000     $ 1,809,000