N.H. Rev. Stat. § 310-A:87
Certificates shall show the full name of the certified soil scientist, apprentice soil scientist, certified wetland scientist, or apprentice wetland scientist and have a serial number. Each certified soil scientist or certified wetland scientist shall obtain a seal of the design authorized by the board bearing the name of the certified individual, the legend "Certified Soil Scientist" or "Certified Wetland Scientist," as appropriate, and a place for the certified individual's signature. Plans and reports prepared by a certified individual shall be stamped with the seal and signed by the certified individual during the life of the certificate.
RSA 310-A:87
1988, 281:1. 1995, 136:35. 1997, 240:20, eff. July 1, 1997. 2021, 197:177, eff. July 1, 2021.