Exhibit 31.2CERTIFICATION  

I, Mark A. Ruth, certify that: 

1.    I have  reviewed  this  Amendment on Form 10-K/A of Tengasco,  Inc. for the year  ended       December 31, 2004.

2.     Based onmy knowledge, this report does not contain any untrue statement of a material fact or omitto state a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading with respect to theperiod covered by this report; 

3.     Based onmy knowledge, the financial statements, and other information included in this quarterlyreport, fairly present in all material respects the financial condition, results ofoperations and cash flows of the Registrant as of, and for, the periods presented in thisreport; 

4.     TheRegistrant’s other certifying officer(s) and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules(13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined inExchange Act Rules 13a-15(f) and 15d-15(f) for the registrant and have: 

(a)              Designed such disclosure controls and procedures, or caused such disclosure          controls and procedures to be designed under our supervision, to ensure that          material information relating to the registrant, including its consolidated          subsidiaries, is made know to us by others within those entities, particularly          during the period in which this report is being prepared: 

(b)              Designed such internal control over financial reporting, or caused such internal          control over financial reporting to be designed under our supervision, to          provide reasonable assurance regarding the reliability of financial reporting          and the preparation of financial statements for external purposes in accordance          with generally accepted accounting principles; 

(c)              Evaluated the effectiveness of the registrant’s disclosure controls and          procedures and presented in this report our conclusions about the effectiveness          of the disclosure controls and procedures, as of the end of the period covered          by this report based on such evaluation, and; 

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

5.     TheRegistrant’s other certifying officers and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to the registrant’s auditorsand the audit committee of the Registrant’s board of directors (or persons performingthe equivalent functions); 

(a)              All significant deficiencies and material weaknesses in the design or operation          of internal control over financial reporting which are reasonably likely to          adversely affect the Registrant’s ability to record, process, summarize and          report financial information; and 

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

Dated: September 13, 2005 

By: s/ Mark A. RuthMarkA. Ruth Chief Financial Officer