To the editor:
I just read the article in June/July Geosynthetics on purging dated test methods and specs. I couldn’t agree more with the article. I still commonly see specifications for NSF-54!
I would make one bit of clarification on [this] information. You list ASTM D6214 replacing D4437 and D4545 for PVC. Actually, ASTM D7408 has already replaced D6214, so the current specification for all PVC geomembrane seams (factory and field) is ASTM D7408.
President, Environmental Protection Inc., Mancelona, Mich.
Join the discussion
To post your thoughts on these comments, fill out the comment form on the bottom of the article “Purging the geosynthetics system of dated test methods and specs.”