15 CFR 10.15: Interpretations.

(a) An interpretation of a Voluntary Product Standard may be obtained through the submission of a written request. The request shall identify the specific section of the standard involved.

(b) In the case of PS 20-70, the “American Softwood Lumber Standard,” interpretations shall be made by the American Lumber Standards Committee (ALSC) under the procedures developed by the ALSC and found acceptable to NIST.

(c) In the case of the other Voluntary Product Standards, interpretations shall be made by the appropriate Standing Committees under procedures developed by those committees and found acceptable to NIST.