EXHIBIT31.2

CERTIFICATION OF FINANCIAL OFFICERPURSUANT TO 18 U.S.C. SECTION 135D, AS ADOPTED PURSUANT TO SECTION302 OF THE SARBANES-OXLEY ACT OF 2002

I, John S.Brittain, Jr., certify that:

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| 1.  | Ihave reviewed this quarterly report on Form 10-Q of Quanta CapitalHoldings Ltd.; |

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| 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; |

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| 3.  | Based on myknowledge, the financial statements, and other financial informationincluded in this report, fairly present in all material respects thefinancial condition, results of operations and cash flows of theregistrant as of, and for, the periods presented in this report; |

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| 4.  | The registrant's othercertifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in ExchangeAct Rules 13a-15(e) and 15d-15(e)) for the registrant and have: |

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| a.  | Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to bedesigned under our supervision, to ensure that material informationrelating to the registrant, including its consolidated subsidiaries, ismade known to us by others within those entities, particularly duringthe period in which this report is being prepared; |

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| b.  | 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 |

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| c.  | 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; |

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| 5.   | Theregistrant's other certifying officer and I have disclosed, basedon our most recent evaluation of internal control over financialreporting, to the registrant's auditors and the audit committeeof registrant's board of directors (or persons performing theequivalent functions): |

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| 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 |

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| b.  | Any fraud, whether or not material, thatinvolves management or other employees who have a significant role inthe registrant's internal control over financial reporting. |

Date: May 4, 2005

/s/ John S. Brittain,Jr.John S. Brittain, Jr. (Principal FinancialOfficer)

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