Accreditations, Proficiency Testing & Training

Both CA Labs locations hold asbestos accreditations from national and state programs, so our results are defensible for AHERA, NESHAP, and state compliance work anywhere we serve.

Proficiency Testing — both locations

• TEM – NVLAP Proficiency Testing program
• PLM – NVLAP Proficiency Testing program
• PCM – AIHAPAT IHPAT

Our analytical staff receives rigorous in-house training plus continuing education from the McCrone Research Institute, MVA Scientific Consultants, and other providers, keeping our analysts current on evolving methods and difficult sample matrices.

PLM — Polarized Light Microscopy

PLM is the primary method for identifying and quantifying asbestos in bulk building materials such as drywall systems, floor tile, mastics, plaster, and insulation. When a sample falls near the one-percent regulatory threshold, we offer point counting and gravimetric reduction for a more definitive result. Analyses are performed on Leica DM750 Pol microscopes, with four to five stations at each laboratory to provide the manpower for larger projects without sacrificing turnaround.

Methods

• EPA 600/R-93/116
• 40 CFR Part 763, Subpart E, Appendix E (Interim Method)
• NESHAP Point Counting methodology
• Gravimetric analyses

TEM — Transmission Electron Microscopy

TEM provides the highest resolution available for asbestos analysis, confirming fiber identity by morphology, electron diffraction, and elemental analysis. We rely on it for AHERA clearance air samples, bulk confirmation of non-friable and organically bound materials, dust characterization, vermiculite, and drinking water. Our Dallas laboratory operates two JEOL transmission electron microscopes, and a Cressington 208C high-vacuum turbo carbon coater shortens sample preparation to ensure fast, reliable turnaround times.

Methods

• AHERA (Air)
• EPA Yamate Level II (Air)
• NIOSH 7402 (Air)
• TEM Bulk “Chatfield’s Analysis” (Bulk)
• Amphibole Separation (Vermiculite; in-house method)
• ASTM D6480 modified “TEM Wipe” (Dust)
• ASTM D5755 modified “TEM Microvac” (Dust)
• EPA 100.2 (Water)

PCM — Phase Contrast Microscopy

PCM is the standard method for airborne fiber counting during abatement projects and personal exposure monitoring, delivering rapid results for daily air clearance and industrial hygiene sampling. Analyses are performed on a Leica DM750 phase contrast microscope, and both the PLM and PCM programs are overseen by analysts who have completed NIOSH 582E training.

Method

• NIOSH 7400