On November 20, 2019, the United States Environmental Protection Agency (USEPA) finalized revisions to AP-42 Chapter 7, Section 7.1 – Organic Liquid Storage Tanks, which provides approved emission estimating methodologies for storage tanks. Additional revisions were incorporated in March 2020. The methodologies include emission estimates for working and breathing (standing) losses, but not for flashing losses. The revisions include:


  • Updated meteorological data.
  • Replaced equations historically used to obtain approximate values with more accurate equations.
  • Addition of methodology for estimating losses from tank cleaning.
  • Working loss emission calculations based on changes in liquid level rather than throughput.
  • Revised the tank condition and color inputs and updated associated equations.
  • Addition of separate calculations for uninsulated, partially insulated, or fully insulated tanks.


The EPA TANKS 4.09d emissions estimation software program has now become obsolete. This program has not been supported by USEPA for several years, it is known to have errors, and it does not include the recent changes to AP-42 Chapter 7. As of April 9, 2020, the Oklahoma Department of Environmental Quality (ODEQ) has requested that applicants discontinue the use of TANKS 4.09d for all air permit application submissions.


The AP-42 Chapter 7, Section 7.1 methodology revisions may result in increased or decreased emission estimates depending on the type of tank and operating scenario at the individual facility. It is expected that most emission estimates will remain close to the previously estimated values, however it is possible to have significant changes which may need to be discussed with the regulatory agency.


For more information and assistance in this regard please contact A & M Engineering and Environmental Services, Inc. (A & M).


Earlier this month, the U.S. Environmental Protection Agency’s (EPA) Administrator, Andrew Wheeler, announced that A & M Engineering and Environmental Services, Inc. (A & M) has been selected for the 30th Annual  Administrator’s Award for Outstanding Accomplishments by a HUBZone Contractor.  The EPA’s Office of Small and Disadvantaged Business Utilization selected A & M for our remediation work on the Washington County Superfund Project in Missouri during Fiscal Year (FY) 2019. The award recognizes the excellence of a small business, certified by the U.S. Small Business Administration as located and operating within a Historically Underutilized Business Zone (HUBZone), directly contributing to the core EPA mission.

During FY2019 A & M remediated 112 residential properties and high access areas which have been contaminated by lead and zinc from prior mining operations. Due to the diligent efforts of A & M staff, working hand in hand with the EPA, cleanup efforts were completed with a high degree of satisfaction and confidence from the community.  A & M would also like to acknowledge the significant contributions of our primary subcontractor and teaming partner, Williams Diversified Materials, Inc. out of Baxter Springs, Kansas.

A & M is honored to receive this award as EPA’s acknowledgement of our hard work and dedication to providing quality services. Client satisfaction is of the upmost importance to us and the core of our key drivers.

A & M Engineering and Environmental Services, Inc. (A & M) is pleased to announce the approval of its U.S. Small Business Administration All Small Mentor-Protégé relationship with Mead & Hunt. This program exists to strengthen the Architecture, Engineering and Construction industry through mentorship. The mentor enhances the development of the protégé through various forms of assistance, which increases contracting opportunity, experience and overall financial viability for the protégé.

According to Tolga M. Ertugrul, PE, President of A & M, “We are honored to be protégé to Mead & Hunt, and are excited for the opportunities this mentorship relationship will afford, not only in terms of bettering our firm, but also in potential future opportunities under a Joint-Venture.”

Mead & Hunt is an employee-owned consulting firm and remains strong on ENR’s Top 500 design firm list with a national ranking of 119th in 2019. The firm employs nearly 900 employees from 30+ offices nationwide. They were named by Zweig Group as one of the Best Firms to Work For, and by CE News one of the top 10 engineering companies to work for in the nation.

Founded in 1984, A & M is a HUBZone-certified small business located in Tulsa, OK. The company is a diverse firm offering turnkey compliance, consulting, engineering, design, construction, and remediation services to the private sector, governmental agencies, and Native American tribes.

A & M Receives Outstanding Feedback from Region 7 EPA. (March 2, 2020) – After a successful 2019 completion of our first of five year project for the EPA, A & M has officially kicked off year two of the Washington County Superfund Project. We anticipate 2020 to be another distinguished year considering the lessons learned we were able to carry forward from 2019.  The success on this project is testament to the team we have in place. Heartfelt shout out to the entire field staff. Thank you for your hard work and dedication.

Potosi, Missouri  Potosi, Missouri
Potosi, Missouri  Potosi, Missouri

A & M Selected As Preferred Contractor By The City of Tulsa, Oklahoma (July 27, 2018) – We are excited to be selected by the City of Tulsa, Oklahoma as one of their preferred contractors for providing Professional Engineering Services for Citywide Environmental Inspections, Testing, Design, and Cleanup Projects. Potential services to be provided include Due Diligence,  NEPA, SWP3s, Leaking Underground Storage Tank Investigations, Asbestos Surveys, Land Surveys, Geotechnical Services, Alternative Analyses, Plan Development, Bid Documents, Bid Assistance, and Construction Oversight.

The USEPA has recently added hazardous waste aerosol cans to the Universal Waste Program under the Federal RCRA regulations. This Final Rule becomes effective February 7, 2020. Please contact Jeff Elbert (Director of Compliance) at (918) 665-6575 or jelbert@aandmengineering.com if we can provide assistance in this regard.

The State of Oklahoma legislature recently passed the Oklahoma Environmental, Health, and Safety (EHS) Audit Privilege Act (EHS Audit Act), which became effective and accessible on November 1, 2019. The EHS Audit Act provides confidentiality for reports and other documents generated during Voluntary Audits. It also provides for Voluntary Disclosure of EHS Violations discovered during qualifying Voluntary Audits. Please contact Jeff Elbert (Director of Compliance) at (918) 665-6575 or jelbert@aandmengineering.com if we can provide you assistance in this regard.