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Click Here ! BARR Engineering Company (952) 832-2600
Barr's more than 300 engineers, scientists, and technical specialists provide environmental, engineering, and information technology services. Areas of expertise include: environmental permitting, management, and compliance.

Click Here ! TRC Environmental Corp. (860) 298-9692
TRC Environmental Corporation provides Customer Focused Solutions through environmental services in air quality management, solid and hazardous waste management, water resources, engineering, regulatory compliance/permitting, environmental consulting and pollution control engineering.

Alta Analytical Perspectives, LLC
2714 Exchange Drive Wilmington, NC 28405
Phone: (910) 794-1613 ... Fax: (910) 794-3919

ARCADIS Geraghty & Miller

4915 Prospectus Drive Ste. F, Durham, NC 27713

Bechtel Group Inc.

Black & Veatch Corporation
11401 Lamar, Overland Park, KS 6621

BT2, Inc.
2830 Dairy Drive, Madison, WI 53718

Visit Us ! Camp Dresser & Mckee Inc.
One Cambridge Place 50 Hampshire St., Cambridge, MA 02139
(617) 452-6000 ... Fax: (617) 452-8000

Visit Us ! CK Environmental, Inc.
CK Environmental, Inc. performs all of the U.S. EPA test methods for emission measurement including test programs for source sampling, CEMS and opacity audits, and pollution control evaluations. CK also rents monitoring systems, maintains CEMS, and installs new systems. Manufacturer/Supplier/Rentals
Phone: (781) 828-5200   Toll Free: (888) 253-0303   Fax: (781) 828-5380

Eastern Technical Associates, Inc.
ETA is the industry standard for opacity training, certification, and consulting in addition to being the trusted source for QSTI/QSTO exams. Now ETA is proud to offer training and analytical services for EPA Method ALT-082, the Digital Opacity Compliance System.
Opacity Training and Consulting
Phone: (919) 878-3188
   Fax: (919) 872-5199

ENSR International
2 Technology Park Drive, Westford, MA 01886

Environmental Resources Management (ERM)
855 Springdale Drive, Exton, PA 19341

Click Here ! ESS Group, Inc.
ESS Group is a full service environmental consulting and engineering firm that provides multi-media environmental services to energy, industrial, and institutional facilities. We also conduct stationary source and ambient air quality testing using our Continuous Emissions Monitoring mobile laboratories and EPA Reference Method sampling equipment. Phone: (401) 434-5560 ..l...Fax: (401) 434-8158

Visit Us ! Grove Scientific & Engineering
6140 Edgewater Dr. Suite F Orlando, FL 32810
Phone: (407) 298-2282 Fax: (407) 290-9038


Lucas Engineering Services, PLLC
5826 Lancelot, Charlotte, NC 28270

Click Here ! MACTEC, Inc. (919) 941-0333
MACTEC's air quality, permitting, & process engineers have been providing comprehensive stack testing svcs to industrial & gov't clients for over 30 yrs. We have provided stack testing & related svcs to the US EPA Emission Measurement Center for over a decade, & our Quality Assurance Project Plan is posted on their web site as an example to be followed by others.

796 Arrowwood Drive, Carmel, IN 46033
Phone: (317) 574-0727


CB&I Environmental & Infrastructure Inc., a CB&I Company
5050 Section Avenue, Cincinnati OH 45212

Phone: (513) 782-4890 ... Fax: (513) 782-4807

Visit Us!Visit Us! Specialty Gases of America (SGA)
Offers FAST Gas TM shipments of top quality EPA Protocol gases. Features the patent-pending PROTOCAL integrated regulator valve model which eliminates user supplied pressure regulators to improve economics, quality, safety, and efficiency.
Phone: (440) 622-3165   FAST-Gas:
1.877.3FASTGas (1.877.332.7842)   Manufacturer/Supplier

URS Corp., San Francisco, Calif.

Visit Us! Wilcox Environmental Engineering, Inc. Our clients benefit from the experience of Wilcox personnel who previously worked inside state regulatory agencies. Using this experience, we can better predict the regulatory agencies responses, manage the testing and permitting process, and suggest practical solutions to challenges that may arise.
Phone: (513) 708-9480    l   Toll Free Phone: (877) 683-8378    l   Fax: (317) 472-0993


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Advanced Industrial
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Frontier Analytical Lab
Sample Analyses

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Source Testing
Training & Workshops

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CK Environmental, Inc,
Rental Test Equipment

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IE, Inc.
CEMS, Analysers, More!

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Adwest Technologies
Control Equipment

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Air Sample Analyses

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CB&I Environmental & Infrastructure Inc.
Stack Testing

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Emission Technologies,
Inc. - Stack Testing

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Air Qualtiy Analytical, Inc.
FTIR Analyzers

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TalFlo Pump Parts
Emissions Sampling Replacement Parts

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GE Energy
Stack Testing Services

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Prism Analytical Labs
Air Sample Analyses

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Buhler Analysis Systems
Gas Analyzers

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Environmental Engineering and Consulting Firms
ActiveSET.org is the largest stack testing reference source on the Internet and the most visited - with thousands of U.S. and international
visitors. The Active National Directory of Source Emissions Testing supports a state-by-state listing of air quality testing firms
located in the US & Canada. Industrial facility owners & managers can submit a FREE RFP and research or "shop" for stack testing
firms prior to requesting bids. Regulatory agencies & consulting engineers recommend this site & maintain contact lists. Stack
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