EXHIBIT31.1

CERTIFICATION OF CHIEF EXECUTIVEOFFICERPURSUANT TO RULE 13a-14(a) OR 15d-14(a), AS ADOPTEDPURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF2002

I, Tobey J. Russ, certify that:

1. I have reviewed this quarterly report on Form 10-Qof Quanta Capital Holdings Ltd.;

2. Based on myknowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period coveredby this report;

3. Based on my knowledge, thefinancial statements, and other financial information included in thisreport, fairly present in all material respects the financialcondition, results of operations and cash flows of the registrant asof, and for, the periods presented in this report;

4. The registrant's other certifying officer andI are responsible for establishing and maintaining disclosure controlsand procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) for the registrant and have:

|  |          |                                                                                                                                                                                                                                                                                                                                                                           |
|--|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|  | a.  | Designed such disclosure controls and procedures,or caused such disclosure controls and procedures to be designed underour supervision, to ensure that material information relating to theregistrant, including its consolidated subsidiaries, is made known tous by others within those entities, particularly during the period inwhich this report is being prepared; |

|  |          |                                                                                                                                                                                                                                                                                 |
|--|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|  | c.  | Evaluated the effectiveness of theregistrant's disclosure controls and procedures and presented inthis report our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the period covered by thisreport based on such evaluation; and |

|  |          |                                                                                                                                                                                                                                                                                                                                                                                   |
|--|----------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|  | d.  | Disclosed in this report any change in theregistrant's internal control over financial reporting thatoccurred during the registrant's most recent fiscal quarter (theregistrant's fourth fiscal quarter in the case of an annualreport) that has materially affected, or is reasonably likely tomaterially affect, the registrant's internal control overfinancial reporting; and |

5. The registrant'sother certifying officer and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to theregistrant's auditors and the audit committee ofregistrant's board of directors (or persons performing theequivalent functions):

|  |          |                                                                                                                                                                                                                                                                       |
|--|----------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|  | a.  | All significantdeficiencies and material weaknesses in the design or operation ofinternal control over financial reporting which are reasonably likelyto adversely affect the registrant's ability to record, process,summarize and report financial information; and |

|  |          |                                                                                                                                                                          |
|--|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|  | b.  | Any fraud, whether or not material, that involvesmanagement or other employees who have a significant role in theregistrant's internal control over financial reporting. |

Date: November 14, 2005

/s/Tobey J. RussTobey J. Russ(Principal ExecutiveOfficer)

----