<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM PLAINS ALL
AMERICAN PIPELINE, L.P. CONSOLIDATED BALANCE SHEET AS OF MARCH 31, 2000 AND
CONSOLIDATED STATEMENT OF INCOME FOR THE THREE MONTHS ENDED MARCH 31, 2000, AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0001070423
<NAME> PLAINS ALL AMERICAN PIPELINE, L.P.
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> MAR-31-2000
<CASH> 7,193
<SECURITIES> 0
<RECEIVABLES> 502,895
<ALLOWANCES> 0
<INVENTORY> 52,848
<CURRENT-ASSETS> 562,936
<PP&E> 455,572
<DEPRECIATION> 14,774
<TOTAL-ASSETS> 1,036,713
<CURRENT-LIABILITIES> 509,022
<BONDS> 0
0
0
<COMMON> 259,704
<OTHER-SE> (17,629)
<TOTAL-LIABILITY-AND-EQUITY> 1,036,713
<SALES> 999,319
<TOTAL-REVENUES> 1,054,989
<CGS> 962,767
<TOTAL-COSTS> 981,531
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 9,158
<INCOME-PRETAX> 64,300
<INCOME-TAX> 0
<INCOME-CONTINUING> 64,300
<DISCONTINUED> 0
<EXTRAORDINARY> (4,145)
<CHANGES> 0
<NET-INCOME> 60,155
<EPS-BASIC> 1.71
<EPS-DILUTED> 1.71
</TABLE>