NLBMDA has received information from the American Lumber Standard Committee (ALSC) regarding a stamp observed in Southern California.  It is not a stamp of an ALSC-authorized ALS agency.  
 

You may also find a list (dated June 2016) provided by the ALSC regarding the rules certified as conforming to the American Softwood Lumber Standard, PS20, as well as the typical grade stamp of accredited agencies.  The document also provides a guide for interpreting grade stamps.
 

If you observe any non-complying marks or have any questions, feel free to contact Frank Moore, NLBMDA Regulatory Counsel at [email protected].