**EXHIBIT 31.1**

 

**SECTION 302 CERTIFICATION**

 

I,James R. Swartwout, certify that:

 

1.                                       I have reviewed this Quarterly Report on Form10-Q of Summa Industries;

 

2.                                       Based on my knowledge, this Quarterly 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 Quarterly Report;

 

3.                                       Based on my knowledge, the financialstatements, and other financial information included in this Report, fairlypresent in all material respects the financial condition, results of operationsand cash flows of the registrant as of, and for, the periods presented in thisQuarterly Report;

 

4.                                       The registrant’s other certifying officersand I are responsible for establishing and maintaining disclosure controls andprocedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)), for theregistrant and we have:

 

(a)                                  designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to be designedunder our supervision, to ensure that material information relating to theregistrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which thisQuarterly Report is being prepared;

 

(b)                                 evaluated the effectiveness of the registrant’sdisclosure controls and procedures and presented in this Quarterly Report ourconclusions about the effectiveness of the disclosure controls and proceduresas of the end of the period covered by this report based on such evaluation;and

 

(c)                                  Disclosed in this Quarterly Report any changein the registrant’s internal control over financial reporting that occurredduring the registrant’s most recent fiscal quarter (the registrant’s fourthfiscal quarter in the case of an annual report) that has materially affected,or is reasonably likely to materially affect, the registrant’s internal controlover financial reporting; and

 

5.                                       The registrant’s other certifying officersand I have disclosed, based on our most recent evaluation of internal controlover financial reporting, to the registrant’s auditors and the audit committeeof registrant’s board of directors (or persons performing the equivalentfunctions):

 

(a)                                  all significant deficiencies in the design oroperation of internal controls over financial reporting which are reasonablylikely to adversely affect the registrant’s ability to record, process,summarize and report financial information; and

 

(b)                                 any fraud, whether or not material, thatinvolves management or other employees who have a significant role in theregistrant’s internal control over financial reporting.

 

 
|   |   /s/ James R. Swartwout |   |
|--------|------------------------------------|--------|
|   | James  R. Swartwout                |
|   | Chief  Executive Officer           |
|   | Chief  Financial Officer           |
|   | April  4, 2005                     |

 

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