LA Lab Accreditation

The Louisiana Environmental Laboratory Accreditation Program is designed to ensure the accuracy, precision, and reliability of the data generated, as well as the use of the department-approved methodologies in the generation of that data. Laboratory data generated by commercial environmental laboratories that are not accredited under these regulations will not be accepted by the department in accordance with LAC 33:I.4501.A.2. Whenever samples are subcontracted to another environmental testing laboratory, the original laboratory shall maintain a verifiable copy the results with a chain of custody. The subcontracting procedure may not be used to circumvent proper accreditation or any state requirements. The original laboratory is responsible for ensuring that the secondary laboratory used is properly accredited for the scope of testing performed in accordance with LAC 33:I.5307.D.


Applying for Accreditation

Click Here to Apply for Accreditation


LELAP Accredited Labs 

Laboratory Scopes of Accreditation **

** - The laboratory accreditation data is being pulled real time from a separate server so delays in processing requests should be expected




The EPA has updated its "Guidelines Establishing Test Procedures for the Analysis of Pollutants Under the Clean Water Act; Analysis and Sampling Procedures", also known as the "Method Update Rule". The new rule was published on May 19, 2021 and will take effect on July 19, 2021. For more information please read the Method Update Rule memo. For a copy of the rule, please access this link:


All laboratories or other individuals with questions or seeking accreditation may contact Paul Bergeron, Environmental Scientist Manager, LDEQ Laboratory Accreditation Program at (225) 219-0789 or Paul.Bergeron@LA.GOV.


Additional Information

  • Frequently Asked Questions
  • Proficiency Test Requirements
  • Online Payment Instructions
  • LELAP Checklist
  • NELAP Checklist
  • LELAP Interpretations
  • Title 33 LELAP Regulations
  • TNI Standard
  • DMR-QA Waiver Approval Letter
  • Fugitive Emission Testers - Fugitive emission testers performing EPA Method 21 only and no other analyses are not required to be accredited by the Louisiana Environmental Laboratory Accreditation Program at this time. 

  • LELAP is publishing laboratory records in the Electronic Data Management System (EDMS). EDMS is the system for LDEQ’s electronic repository of official records that have been created or received by the Department.  Use the AI number of the lab in the above lists to search LDEQ’s Electronic Data Management System (EDMS) to find and review a lab’s current Certificates and Scopes of Accreditation. Data generated by an accredited lab to be submitted to the Louisiana Department of Environmental Quality is limited to the method/parameters listed on their current Scope of Accreditation.

Helpful Links

LELAP Staff Location Phone Email
Paul Bergeron DEQ Headquarters (225) 219-0789


Elizabeth West Northwest Regional Office (318) 676-7457
Joseph Kieffer (Joey) DEQ Headquarters (225) 219-3302
Alexandra Alvarado DEQ Headquarters (225) 219-7585 Alexandra.Alvarado@LA.GOV


NOTE: To lodge a laboratory accreditation-related complaint, contact the LDEQ Ombudsman