Top 500 Design Firms April 20, 2011 |
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| 1st Design Firm in Sewer/Wastewater Treatment |
| 2nd Design Firm in Water |
| 3rd Design Firm in Manufacturing |
| 4th Top 500 Design Firms |
| 5th Design Firm in Hazardous Waste |
| 7th Design Firm in Industrial Processing/Petroleum |
| 7th Design Firm in Transportation |
| 8th Design Firm in Designers in International Markets |
| 9th Design Firm in Power |
| 14th Design Firms in General Building |
| Top 400 Contractors May 16, 2011 |
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| 9th Contractor in Hazardous Waste |
| 15th Contractor Working Abroad |
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18th Contractor in Power
20th Contractor in Petroleum
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| 55th Top 400 Contractors |
| Top 100 Project Delivery Firms June 6, 2011 |
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| 9th Design-Build |
| Top Professional Services Firms June 13, 2011 |
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| 1st Program Management |
| 2nd Construction Management-for-Fee |
Top 500 Design Firms Sourcebook July 4, 2011 |
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| 1st Pipelines |
| 1st Water Treatment and Desalination Plants |
| 1st Sewerage and Solid Waste |
| 1st Site Assessment and Compliance |
| 1st Wastewater Treatment Plants |
| 1st Solar Power |
| 2nd Water Supply |
| 2nd Pharmaceuticals |
| 3rd Chemical Plants |
| 3rd Wind Power |
| 3rd Manufacturing |
| 3rd Government Offices |
| 3rd Ports and Maritime |
| 4th Airports |
| 5th Hazardous Waste |
| 5th Chemical and Soil Remediation |
| 5th Industrial Processes |
| 5th Bridges |
| 6th Fossil Fuels |
| 7th General Building |
| 7th Transportation |
| 7th Highways |
| 7th Nuclear Plants |
| 8th Petroleum |
| 8th Transmission & Distribution |
| 9th Power |
| 10th Cogeneration |
| 10th Refineries and Petrochemical Plants |
Top Green Firms July 4, 2011 |
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| 7th Green Design Firms |
| 3rd Sports Entertainment & Civic |
| Top 200 Environmental Firms August 1, 2011 | ||||||||||
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| 1st Top Environmental Firms | ||||||||||
| 1st Wastewater Treatment | ||||||||||
| 1st Consulting/Design | ||||||||||
| 1st Engineering/Design | ||||||||||
| 1st Contracts Awarded Previous Year | ||||||||||
| 1st Working in non-U.S. Locations | ||||||||||
| 2nd Water Supply/Treatment | ||||||||||
| 2nd Hazardous Waste | ||||||||||
| 3rd PM/CM | ||||||||||
| 4th Nuclear Waste | ||||||||||
| 4th Air Pollution Control/Efficient Energy | ||||||||||
| 5th Environmental Science | ||||||||||
10th Construction/Remediation
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