**Exhibit31.1**

 

**CERTIFICATIONS**

 

I, Charles F. Flood, President and Chief ExecutiveOfficer of IESI Corporation, certify that:

 

1.             I have reviewed this annual report onForm 10-K of IESI Corporation (the “registrant”);

 

2.             Based on my knowledge, this annual reportdoes not contain any untrue statement of a material fact or omit to state amaterial fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this annual report;

 

3.             Based on my knowledge, the financialstatements, and other financial information included in this annual report,fairly present in all material respects the financial condition, results ofoperations and cash flows of the registrant as of, and for, the periodspresented in this annual report;

 

4.             The registrant’s other certifyingofficer(s) and I are responsible for establishing and maintaining disclosurecontrols and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))for the registrant and have:

 

(a)                                  Designed suchdisclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this annual report is being prepared;

 

(b)                                 Evaluated theeffectiveness of the registrant’s disclosure controls and procedures andpresented in this annual report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisannual report based on such evaluation; and

 

(c)                                  Disclosed inthis annual report any change in the registrant’s internal control overfinancial reporting that occurred during the registrant’s most recent fiscalquarter (the registrant’s fourth fiscal quarter in the case of an annualreport) that has materially affected, or is reasonably likely to materially affect,the registrant’s internal control over financial reporting; and

 

5.             The registrant’s other certifyingofficer(s) and I have disclosed, based on our most recent evaluation ofinternal control over financial reporting, to the registrant’s auditors and theaudit committee of the registrant’s board of directors (or persons performingthe equivalent functions):

 

(a)                                  All significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adverselyaffect the registrant’s ability to record, process, summarize and reportfinancial information; and

 

(b)                                 Any fraud,whether or not material, that involves management or other employees who have asignificant role in the registrant’s internal control over financial reporting.

 

Date: March 30, 2004

 

 
| /s/ Charles F. Flood                  |   |
|---------------------------------------|--------|
| President and Chief Executive Officer |

 

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