6 1 10 ASTM D 6214 - 98 (Reapproved 2003) Standard test method for determining the integrity of field seams used in joining geomembranens by chemical fusion methods ASTM Primary Author mixed material ASTM 2006 ASTM D 6434 - 04 Standard guide for the selection of test methods for flexible polypropylene (fPP) geomembranes ASTM Primary Author mixed material ASTM 2006 ASTM D 6455 - 05 Standard guide for the selection of test methods for prefabricated bituminous geomembrance (PBGM) ASTM Primary Author mixed material ASTM 2006 ASTM D 6636 - 01 Standard test method for determination of ply adhesion strength of reinforced geomembranes ASTM Primary Author mixed material ASTM 2006 ASTM D 6693 - 04 Standard test method for determining tensile properties of nonreinforced polyethylene and nonreinforced flexible polyproylene geomembrances ASTM Primary Author mixed material ASTM 2006 ASTM D 6747 - 04 Standard guide for selection of techniques for electrical detection of potential leak paths in geomembranes ASTM Primary Author mixed material ASTM 2006