City of Los Angeles Methane Barriers Certification

PGLI is a City of Los Angeles accredited independent laboratory to certify products identified in the “Acceptance Criteria for Methane Barrier Application Materials.”

Bonded Seam Strength (supported materials) ASTM D751
Bonded Seam Strength (unsupported materials) ASTM D882
Microorganism Resistance   (Soil Burial) ASTM D4068
Methane Permeability ASTM D1434
Oil Resistance ASTM D543
Heat Aging / Resistance ASTM D4068
Dead Load Seam Strength ASTM D751
Environmental Stress Cracking ASTM D 1693