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Expect the Extraordinary.


Leak Detection & Repair (LDAR)

For more than 30 years, APTIM has provided high-quality, comprehensive, innovative, and personalized services to the petrochemical, oil and gas, pharmaceutical and chemical industries. Our professional team of technical staff and project managers are highly-trained experts in all aspects of LDAR. We customize programs to fit individual client needs and budgets, and we offer a wide variety of environmental services.


  • LDAR Programs Management and Reporting
  • P&ID Reviews and Inventory Projects
  • Customized Training
  • El Paso Sampling
  • Third Party and Consent Decree Audits
  • Optical Gas Imaging (OGI)
  • Greenhouse Gas Testing and Reporting

In addition to setting up and managing decades of quality LDAR programs, we also provide related services including the following:

  • Environmental consulting
  • Steam trap surveys
  • Ultrasonic testing
  • Industrial maintenance
  • Reliability consulting services

Our experience goes far beyond routine monitoring. We have built LDAR programs from the ground up and have stepped into programs that have been ongoing for years. We provide support services such as tagging, field verifications, compliance and efficiency evaluations, emissions calculations and reporting. We also provide clients with even broader scopes of service such as consulting, permitting, and applicability reviews. We can be your one stop environmental consultant.

Our Training programs are suited for every phase of LDAR program involvement and help provide consistent, high-quality LDAR services. We offer certification training designed for anyone responsible for monitoring volatile organic compound (VOC) emissions from process equipment which includes:

  • Customized LDAR training
  • Regulated equipment and potential leak sources
  • Method 21 testing procedures
  • Portable VOC measuring devices
  • Regulatory training
  • Facility audit training

Our QA/QC programs covers daily field activities to data management. Our practices include weekly time/date stamp evaluations, weekly calibration records checks, quarterly records reviews, and semi-annual comprehensive audits that consist of creative, non-standard systems that provide data integrity, a crucial component of a successful LDAR program.

As LDAR programs have evolved over the past 30 years, so has APTIM. We are constantly seeking out ways to lead the industry while maintaining the fundamentals that set the foundation for our success. We are a client-oriented, solution-based LDAR company who understands there is more than one right way. Whether you are looking for a full service LDAR consultant, completing a tagging or P&ID project, or needing certified OGI professionals, we have the solution for you. Call us today to find out how we can assist you with all your air compliance needs.

Our consent decree knowledge includes extensive experience managing large facilities for more than two decades. We currently service over 10 facilities operating under consent decrees and provide them with the support, training, and documentation required by the decrees.

Our detailed operating procedures, compliance, and training manuals are integral to the mechanics of a successful and efficient program. We have developed numerous guidelines defining the roles, responsibilities, and expectations for all personnel in the programs and which are designed to be adaptable to the processes and procedures of each individual client. This provides accuracy, consistency, and compliance throughout.

A key component to a LDAR program’s success is the location and availability of staff and resources. We have spent three decades establishing ourselves. Our main offices are based in Texas, Louisiana, and West Virginia, and have technical staff and program specialist located strategically throughout the country.