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CEO, CFO Certification of Financial Statements

2008-2009 Press Release (pdf)
12-01-09 Webcast: Dec. 1, 2009 – 1:35 p.m. ET -- Executive Presentation at 2009 FBR Capital Markets Fall Investor Conference
11-17-09 Quanta Services to Present at Investor Conferences
11-17-09 Webcast: Nov. 18, 2009 – 3:00p.m. ET -- Executive Presentation at Stephens, Inc. Fall Investment Conference
11-04-09 Quanta Services Reports 2009 Third Quarter Results
11-04-09 Reconciliations of Other GAAP to non-GAAP Measures
11-04-09 Webcast: Wednesday, November 4, 2009 – 9:30 ET – Third Quarter Earnings Conference Call
10-30-09 Quanta Services Announces Third Quarter Earnings Release and Conference Call Schedule
10-01-09 Quanta Services Acquires Price Gregory Services, Incorporated
09-15-09 Webcast: Sept. 17 at 2:30 pm PT - Executive Presentation at D.A. Davidson Engineering & Construction Conference
09-14-09 Webcast: Sept. 15 at 9:00 am ET – Executive Presentation at J.P. Morgan Diversified Industries Conference
09-14-09 Quanta Services to Present at the J.P. Morgan Diversified Industries Conference and the D.A. Davidson Engineering & Construction Products Conference
09-03-09 Quanta Services To Acquire Price Gregory
09-03-09 Presentation: Quanta to Acquire Price Gregory
08-05-09 Quanta Services Reports 2009 Second Quarter Results
08-05-09 Reconciliations of Other GAAP to non-GAAP Measures
08-05-09 Webcast: Wednesday, August 5, 2009 – 9:30 ET – Second Quarter Earnings Conference Call
07-28-09 Quanta Services Announces Second Quarter 2009 Earnings Release and Conference Call Schedule
05-06-09 Quanta Services Reports 2009 First Quarter Results
05-05-09 Webcast: Wed., May 6, 2009 – 9:30 ET – First Quarter 2009 Earnings Conference
05-05-09 Quanta Announces First Quarter Earnings Release and Conference Call Schedule
03-09-09 Peter Lorenz to Lead Quanta’s Renewable Energy Services
03-02-09 Officers of Quanta Services to Report the Withholding of Shares
02-24-09 Quanta Services Reports 2008 Fourth Quarter and Annual Results
02-24-09 Reconciliations of Other GAAP to non-GAAP Measures
02-24-09 Quanta Services and Northeast Utilities Expand Contract
02-24-09 Webcast: Tuesday, February 24, 2008 – 9:30 ET – 2008 Fourth Quarter & Full Year Conference Call
02-11-09 Quanta Services Announces 2008 Fourth Quarter & Full Year Earnings Release and Conference Call Schedule
01-27-09 National Grid Selects Quanta Services for Transmission Infrastructure Services
12-02-08 Webcast: Dec. 4 at 10:15 am ET – Executive Presentation at JP Morgan SMid Cap Conference
12-01-08 Webcast: Dec. 2 at 10:45 am ET - Executive Presentation at FBR Capital Markets Fall Investor Conference
12-01-08 Quanta Services to Present at Investor Conferences
11-05-08 Quanta Services Reports 2008 Third Quarter Results
11-05-08 Reconciliations of Other GAAP to non-GAAP Measures
10-30-08 Webcast: Wednesday, November 5, 2008 – 9:30 ET – Third Quarter Earnings Conference Call
10-30-08 Quanta Services Announces 2008 Third Quarter Earnings Release and Conference Call Schedule
10-27-08 Quanta Services Names James F. O’Neil President and COO
08-06-08 Quanta Services Announces Second Quarter Results
08-06-08 Reconciliation of Non-GAAP Financial Measures
08-05-08 Webcast: Wednesday, August 6, 2008 – 9:30 ET – Second Quarter Earnings Conference Call
05-30-08 Quanta Services to Present at Investor Conferences
05-30-08 Webcast: June 3, 2008 – 10:00 am ET – JPMorgan Basics and Industrials Conference
05-30-08 Webcast: June 5, 2008 - 1:55 ET - Credit Suisse Engineering & Environmental Services Conference
05-07-08 Quanta Services Reports First Quarter Results
05-07-08 Reconciliations of Other GAAP to non-GAAP Measures
05-07-08 Webcast: Wednesday, May 7, 2008 – 9:30 a.m. ET – First Quarter Earnings Conference Call
04-29-08 Quanta Services Announces 2008 First Quarter Earnings Release And Conference Call Schedule
03-14-08 Webcast: March 17, 2008 – 2:25 PDT – CitiGroup Small and MidCap Conference
03-14-08 Quanta Services to Present at The CitiGroup Small & Mid-Cap Conference
03-03-08 Officers of Quanta Services to Report the Withholding of Shares
03-03-08 LCRA Selects Quanta Services for Transmission System Expansion
02-25-08 Webcast: Feb. 27, 2008 3:15 pm ET – Baird 2008 Business Solutions Conference
02-25-08 Quanta Services to Present at the Robert W. Baird 2008 Business Solutions Conference
02-21-08 Quanta Services Reports Fourth Quarter and Annual Results
02-21-08 Reconciliation of EBITA and Adjusted EBITDA
02-19-08 Webcast: Thursday, February 21, 2008 – 9:30 am ET – Fourth Quarter and Year End Earnings Conference Call
02-19-08 Quanta Services Announces 2007 Fourth Quarter and Year End Earnings Release and Conference Call Schedule
12-20-07 Quanta Services and Northeast Utilities Finalize $750 Million Contract
11-26-07 Webcast: Tuesday, November 27, 9:15am ET -- FBR Capital Markets Investor Conference
11-26-07 Quanta Services to Present at FBR Capital Markets Investor Conference
11-08-07 Quanta Services Reports Third Quarter Results
Reconciliation of EBITA and Adjusted EBITDA
11-05-07 Quanta Secures MOU with Northeast Utilities | Webcast
10-18-07 Quanta Services Announces 2007 Third Quarter Earnings Release and Conference Call Schedule
09-20-07 Quanta Services Increases Credit Facility to $475 Million
09-19-07 Webcast: Thursday, September 20, 2007 -- Quanta Services Executives Present at Davidson Capital Markets Conference
09-19-07 Quanta Services to Present at D.A. Davidson Sixth Annual Engineering & Construction Conference
08-30-07 Quanta Services Acquires InfraSouce Services
08-02-07 Quanta Services Reports Second Quarter Results
07-30-07 Quanta Services Reschedules Second Quarter Conference Call for 9:00A.M Eastern on August 2nd
07-30-07 Quanta Services Announces 2007 Second Quarter Earnings Release and Conference Call Schedule
05-11-07 Quanta Services to Present at Merrill Lynch Conference
05-10-07 Quanta Services Announces Early Termination of HSR Waiting Period
05-03-07 Quanta Services Reports First Quarter Results
05-03-07 Webcast May 3, 2007 at 9:30 am ET -- Quanta Services Reports First Quarter Earnings Conference Call
03-19-07 Webcast: March 19, 2007 at 8:00 am CST - Quanta Services to Acquire InfraSource
03-19-07 Quanta Services to Acquire InfraSource Services in All-Stock Transaction
02-22-07 Quanta Services Reports Fourth Quarter and Annual Earnings Results
02-22-07 Webcast: Febuary 22, 2007 at 9:30 am ET - Quanta Services Fourth Quarter and Annual Earnings Conference Call
02-20-07 Quanta Services Announces 2006 Fourth Quarter and year End Earnings Release and Conference Call Schedule
01-23-07 Quanta Services Expects to Exceed Fourth Quarter Estimates
2006 Press Release (pdf)
11-02-06 Quanta Services Reports Third Quarter Results
11-02-06 Quanta Secures Contract with Northeast Utilities
10-27-06 Quanta Services Announces 2006 Third Quarter Earnings Release and Conference Call Schedule
09-19-06 Quanta Services to Present at the D.A Davidson Conference
08-02-06 Quanta Services Reports Second Quarter Results
08-01-06 Webcast: August 2, 2006 at 9:30 am ET – Quanta Services Second Quarter Earnings Conference Call
05-16-06 Quanta Services Commences Tender Offer for 4.0% Convertible Subordinated Notes Due 2007
05-16-06 Tender offer Materials – Cash Tender Offer for 4.0% Convertible Subordinated Notes Due 2007
04-26-06 Quanta Services Announces Offering of $125 Million of Convertible Subordinated Notes
04-12-06 Quanta Services Confirms First Quarter Guidance
02-23-06 Quanta Services Reports Fourth Quarter Results
2005 Press Release (pdf)
12-05-05 Quanta Services Updates Company Profile
12-05-05 Quanta Company Profile December 2005
11-21-05 Quanta Services to Present at the First Albany Capital 2005 Growth Conference
11-18-05 Quanta Services to Present at the FBR 2005 Investor Conference
11-04-05 Quanta Services reports Third Quarter Results
10-22-05 Quanta Services Announces 2005 Third Quarter Earnings Release and Conference Call Schedule
09-19-05 Quanta Services to Present at the D.A. Davidson Conference
08-04-05 Quanta Services Reports Second Quarter Results
07-29-05 Quanta Services' Second Quarter Conference Call -- Thursday, August 4, 2005 9:30 a.m. ET
07-28-05 Quanta Services Announces 2005 Second Quarter Earnings Release and Conference Call Schedule
06-05-05 Quanta Services Company Profile Dated June 2005
05-27-05 Quanta Services to Present at the CSFB Engineering and Construction Conference
05-05-05 Quanta Services Reports First Quarter Results
05-04-05 Quanta Services' First Quarter Conference Call -- Thursday,
May 5, 2005 9:30 a.m. ET
04-27-05 Quanta Services Announces 2005 First Quarter Earnings Release and Conference Call Schedule
04-20-05 Proxy Statement for the Quanta Services Annual Meeting of Stockholders
03-10-05 Quanta Services Reports Fourth Quarter Results
03-08-05 Quanta Services Announces 2004 Fourth Quarter and Year End Earnings Release and Conference Call Schedule
03-02-05 Officers of Quanta Services to Report the Withholding of Shares
01-28-05 Quanta Services Updates Company Profile
2004 Press Release (pf)
12-31-04 Quanta Services 2004 Annual Report
12-02-04 Quanta Services to Present at the First Albany Capital Annual Growth Conference Services Reports Third Quarter Results
11-03-04 Quanta Services Reports Third Quarter Results
09-20-04 Quanta Services, Inc. Announces a Secondary Offering of Twenty Million Shares of Common Stock
08-20-04 QOSHA, Electrical Construction Contractors,Union, and Industry Associations Form Strategic Safety Partnership
08-06-04 Quanta Services Reports Second Quarter Results
07-23-04 Quanta Services Revises Second Quarter Outlook
05-19-04 Quanta Services Publishes Company Profile
05-11-04 Quanta Appoints New Telecom Division President
05-05-04 Quanta Services Reports First Quarter Results
04-30-04

Quanta Services Announces 2004 First Quarter Earnings Release Schedule

04-26-04 Quanta Revises First Quarter Outlook
03-24-04 Quanta Services Appoints New Board Members
02-26-04 Quanta Services Announces Fourth Quarter Results
02-21-04 Quanta Services Announces 2003 4th Quarter And Year End Earnings Release and Conference Call Schedule
2003 Press Releases (pdf)
11-13-03 Quanta Services Announces Third Quarter Earnings
11-13-03 Quanta Services Secures Two Projects Totaling $100 Million
11-05-03 Quanta Services Announces Third Quarter Earnings Release and Conference Call Schedule
10-24-03 Quanta Services Announces Issuance of Additional $45 Million of Convertible Subordinated Debentures
10-21-03 Quanta Services Completes Offering of 4.50% Convertible Subordinated Debentures Due 2023
10-09-03 Quanta Services Announces Offering of $175 Million of Convertible Subordinated Debentures
10-02-03 Quanta Services Files Amended 2002 Form 10-K and 2003 Forms 10-Q
08-06-03 Quanta Services Announces 2nd Quarter Results
05-06-03 Quanta Services Reports First Quarter Results
04-03-03 Quanta Services Revises First Quarter Guidance
02-27-03 Quanta Services Reports 4Q Results
02-24-03 Quanta Services Announces Extension of Stock Option Exchange Program
02-20-03 Quanta Services Announces 4th Quarter and Year Earnings Release and Conference Call Schedule
 



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