• AASHTO T 206-22

    Standard Method of Test for Penetration Test and Split-Barrel Sampling of Soils (ASTM Designation: D1586/D1586M-18)
    standard by American Association of State and Highway Transportation Officials, 2022

  • NACE RP0490-95

    Standard Recommended Practice – Holiday Detection of Fusion-Bonded Epoxy External Pipeline Coatings of 250 to 760 um (10 to 30 mils)
    standard by National Association of Corrosion Engineers, 04/01/1990