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.Erthwrks, LLC.
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Main Office Location:

10208 Ivanhoe Trail Austin, TX 78748

Mailing Address:
(Same As Above)

Phone: 512-413-2725

Fax: 512-906-0677

Web Address:

Contact: John Wood

Contact's e-Mail:

Year Established:

Testing Staff Size: 2

Certified V.E. Readers: 2

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U.S. EPA Test Methodologies: 1-4, 5, 5A-H, 6, 6A-C, 7, 7A-E, 8, 9, 10, 10A-B, 11, 12, 13A-B, 14, 15, 15A, 16, 16A-B, 17, 18, 19, 20, 21, 22, 23, 24, 24A, 25, 25A-B, 26, 26A, 27, 28, 28A, 29, 101, 101A, 102, 103, 104, 106, 108, 111, 201A, 202, 301, 306, SW-846 Methods, BIF Methods, NIOSH Methods

Gaseous Monitoring:
O2, CO2, CO, NOX, SO2, and VOC.

On Site Sample Analysis/Titration: PM, SO2, PM10, HCl

Mobile Labs: 2

Isokinetic Sampling Trains: 2

Geographic Testing Area: National and International Bids

Ambient Air Monitoring: Yes

Industries Served: Asphalt, Soil Remediation, Cement,
Manufacturers (Glass, Steel, Plastics, Chemicals, etc.), Food & Beverage,
Pulp/Paper, Power Generation, Medical/Municipal Waste Incinerators,
Petroleum/Fuel, and Printing/Packaging.


Erthwrks LLC was established in Austin, TX to provide air emission testing services for various industries throughout the United States. Leaving the bureaucracy of a large testing corporation, owners Trey Chapman and John Wood founded Erthwrks in 2007 driven by the belief that the market demanded a nimbler, more customer service driven approach that only a smaller privately owned company can provide.

With over 20 years of combined experience in the industry, we have an excellent understanding of our clients' needs. Our extensive experience in dealing with the various state agencies and regulators gives Erthwrks the ability to efficiently and wholly satisfy our client's requirements while developing and strengthening regulator relationships.


The foremost advantage to using Erthwrks for your emission testing services is the senior level personnel on-site who are capable of quickly diagnosing problems in the field and who can promptly turn around results. Working in this preemptive manner will save all parties involved time and expense.

Erthwrks entrepreneurial, performance driven attitude and streamlined business model make us a standout in today's market place. Our ability to complete projects on time, on budget and at the highest level of service has grown our customer base 300% in the last fiscal year.


Erthwrks specializes in the following services:

  • MACT Compliance Testing
  • Title V Compliance Testing
  • State Permit Compliance Testing
  • Relative Accuracy Test Audits (CEMS RATA)
  • Quarterly Cylinder Gas Audits
  • Tuning Studies
  • Destruction Efficiency Testing
  • Boiler & Industrial Furnace Testing
  • Bulk Fuel Loading Terminal Compliance Testing
  • Other Emission Control Testing
Visit Us!
Erthwrks, LLC.
10208 Ivanhoe Trail Austin, TX 78748
Phone: 512-413-2725     Fax: 512-906-0677

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