<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEETS AND CONSOLIDATED STATEMETNS OF OPERATIONS FOUND ON PAGES 3 AND 4
OF THE COMPANY'S FORM 10K/A FOR THE YEAR TO DATE AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>

<S>                             <C>                     <C>
<PERIOD-TYPE>                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1998             DEC-31-1999
<CASH>                                         136,208                  52,323
<SECURITIES>                                         0                       0
<RECEIVABLES>                                  246,930                 300,507
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               408,375                 418,437
<PP&E>                                      14,085,926              15,099,876
<DEPRECIATION>                             (4,683,752)             (8,294,526)
<TOTAL-ASSETS>                              10,232,970               7,456,422
<CURRENT-LIABILITIES>                          312,675                 250,492
<BONDS>                                      4,769,529               3,326,191
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                   5,150,766               3,879,739
<TOTAL-LIABILITY-AND-EQUITY>                10,232,970               7,456,422
<SALES>                                              0                       0
<TOTAL-REVENUES>                             4,245,660               4,624,903
<CGS>                                                0                       0
<TOTAL-COSTS>                                4,475,382               4,706,119
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                             204,022                 298,121
<INCOME-PRETAX>                                      0                       0
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                 (433,744)               (379,337)
<EPS-BASIC>                                          0                       0
<EPS-DILUTED>                                        0                       0


</TABLE>