Our expense related to doubtful accounts as a percentage of revenue for 2002, 2003 and 2004 was .5%,
.4% and .3%, respectively.
As of December 31, 2004, accounts receivable were $268.7 million, net of allowance for doubtful
accounts of $18.0 million, resulting in days sales outstanding of 35 days, or 22 days net of deferred revenue. In
addition, at December 31, 2004, our trade receivables in excess of 90 days old totaled $16.4 million, or 5.7% of
gross receivables outstanding.
Our expense for self-insurance as a percentage of revenue for 2002, 2003 and 2004 was 5.8%, 7.5% and
6.1%, respectively. The increase in self-insurance expense from 2002 to 2003 related to existing claims and was
attributable to the expansion of our operations and various changes in estimates as a result of continued
negative trends through our 2003 policy year, based on recent actuarial claims experience, expected claims
development and medical cost inÖation.
Property and Equipment
The following tables reÖect the activity in our property and equipment accounts for the years ended
December 31, 2002, 2003 and 2004 (in millions):
Gross Property and Equipment
Balance as of Acquisitions, Balance as of
December 31, Capital Net of Transfers and December 31,
2001 Additions Retirements Divestitures Adjustments 2002
Other land ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $ 94.3 $ 5.1 $ (2.5) $(7.0) $ (.2) $ 89.7
Non-depletable landÑll landÏÏÏÏÏÏÏÏ 50.5 3.3 Ì Ì .2 54.0
LandÑll development costsÏÏÏÏÏÏÏÏÏ 958.8 18.1 Ì 5.1 44.3 1,026.3
Vehicles and equipment ÏÏÏÏÏÏÏÏÏÏÏ 1,153.2 220.8 (47.8) 15.1 15.5 1,356.8
Buildings and improvements ÏÏÏÏÏÏÏ 256.4 12.6 (2.3) (3.4) 7.6 270.9
Construction in progress Ì landÑll ÏÏ 17.6 56.0 Ì Ì (41.3) 32.3
Construction in progress Ì other ÏÏÏ 23.5 15.3 Ì Ì (29.7) 9.1
Total ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $2,554.3 $331.2 $(52.6) $ 9.8 $ (3.6) $2,839.1
Accumulated Depreciation, Amortization and Depletion
Balance as of Additions Acquisitions, Balance as of
December 31, Charged to Net of Transfers and December 31,
2001 Expense Retirements Divestitures Adjustments 2002
LandÑll development costsÏÏÏÏÏÏÏÏ $(237.0) $ (67.4) $ Ì $ Ì $ .3 $(304.1)
Vehicles and equipment ÏÏÏÏÏÏÏÏÏÏ (495.7) (116.5) 36.9 1.8 3.4 (570.1)
Buildings and improvements ÏÏÏÏÏÏ (46.7) (9.6) 1.2 .3 (.1) (54.9)
Total ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $(779.4) $(193.5) $38.1 $2.1 $3.6 $(929.1)
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