Laboratory Accreditation Program

What's New?

• June 30, 2022 – Upon “Environmental Laboratory Accreditation Proficiency Test Study Requirements” Notice published in the Pennsylvania Bulletin Volume 52 Issue 25, Saturday, June 18, 2022, the four Fields of Proficiency Testing documents under the Proficiency Testing (PT) heading have been updated.
• June 16, 2022 – New Rev. 6/2022 for Part 1 – Initial/Renewal Application is now available. Please ensure you submit application using the current revision.
• May 25, 2022 – Revision 2 of the Traceability of Measurements document (G019) is now available under the Compliance Assistance heading.
• March 17, 2022 - New Rev. 3/2022 for Request to Report Qualified Drinking Water Sample Results is now available. Please ensure you submit request using the current revision.

Forms & Applications

• Part 1 - Initial/Renewal Application & Instructions
• Part 2 - Methodology Requests
• Part 3 – Add/Change Supervisor Application & Instructions
• Part 4 - Addition of Field of Accreditation (FOA) & Instructions
• Part 5 - Changes to Laboratory Information & Instructions
• Environmental Laboratory Registration Application
• W-9 Form & Instructions (Rev. 11/2005) (PDF)
• Distillation Variance Application (Rev. 10/2012) (Word)
• Limited Use ATP Method Application (Rev. 10/2012) (Word)
• Request to Report Qualified Drinking Water Sample Results

Proficiency Testing (PT)

• Fields of Proficiency Testing for Drinking Water, Effective 06-18-22 (PDF)
• Fields of Proficiency Testing for Non-potable Water, Effective 06-18-22 (PDF)
• Fields of Proficiency Testing for Whole Effluent Toxicity, Effective 06-18-22 (PDF)
• Fields of Proficiency Testing for Solid and Chemical Materials, Effective 06-18-22 (PDF)
• Approved PT Providers, Rev.4 (PDF)

Procedures & Methods

• ASDWA Technical Bulletin to Laboratories Reporting PFAS Analysis Using EPA Methods 533, 537, or 537.1 (PDF)
• Light Hydrocarbons via Headspace and GC-FID (PA-DEP 3686, Rev. 1) (PDF)
• Light Hydrocarbons via Purge & Trap and GC-FID (PA-DEP 9243, Rev. 0) (PDF)
• Distillation Variance Procedure, Rev. 1 (PDF)

Compliance Assistance

• Coliform Density Calculation FAQ (11/2008) (PDF)
• Corrective Action Report FAQ, Rev. 1 (PDF)
• Distillation Variance Approval Extension Letter (04/27/2012) (PDF)
• Guidelines for Sample Collection, Receipt, and Handling
• Instructions for Environmental Laboratories Seeking Accreditation from the PA-DEP, Rev. 0 (PDF)
• Limited Use ATP Approval Application FAQ, Rev. 0 (PDF)
• Memo to All Accredited Labs RE: Env. Lab Accreditation Regs, Chapter 252 (PDF)
• Memo to DW Accredited Laboratories RE: SDWA Reporting and Notification Requirements (12/7/2017) (PDF)
• Microbiology Incubation Units
• NELAP Accreditation FAQ, Rev. 2.1 (PDF)
• SDWA Microbiology Results and Reporting (12/9/2020) (PDF)
• Notification of Cyanotoxin Accreditation (09/16/20) (PDF)
• On-Site Assessment Guidance, Rev. 2 (PDF)
• Proficiency Testing (PT) Guidance for Laboratories Rev. 5 (PDF)
• Required Documentation for PA State (Chapter 252) Accreditation, Rev. 5 (PDF Only)
• SDWA Composite Analysis FAQ, Rev. 0 (PDF)
• Traceability of Measurements (PDF)
• Writing a Quality Manual for PA State (Chapter 252) Accreditation Rev. 8 (PDF)
• Writing an Analytical SOP for PA State Accreditation, Rev. 3 (PDF)

Search Environmental Laboratories

• Instructions for use of "Search PA Accredited Environmental Laboratories" (PDF)
• Search PA Accredited Environmental Laboratories Link
• Search PA Registered Environmental Laboratories Link

PA State Regulations

• 25 Pa. Code Chapter 252 Environmental Laboratory Accreditation Regulations
• 2012_April 28 - PA Bulletin Fields of Proficiency Testing Additions and PTRLs 4/28/2012 (PDF)
• 2009_May 23 - PA Bulletin Fields of Proficiency Testing Additions 5/23/09 (PDF Only)
• 27 Pa C.S., Chapter 41 (Act 90 of 2002) - Environmental Laboratory Accreditation Act (PDF Only)

The NELAC Institute (TNI)

• The NELAC Institute (TNI) 
  

Related Information

• Laboratory Accreditation Advisory Committee

Contact Us

• EP, Laboratory Accreditation Program
• Laboratory Accreditation Program Document Upload

Mailing and Physical Addresses

US Postal Service :

Department of Environmental Protection
Bureau of Laboratories
Attn: Laboratory Accreditation Program
PO Box 1467
Harrisburg, PA 17105-1467

Other modes of delivery (UPS, Fed Ex, etc):

Department of Environmental Protection
Bureau of Laboratories
Attn: Laboratory Accreditation Program
2575 Interstate Drive
Harrisburg, PA 17110-9332