"Upset" means "upset" as defined in RSA 485-A:XVIII, as reprinted in Appendix B. The term does not include noncompliance to the extent it is caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.
N.H. Admin. Code § Env-Wq 1202.74
#8235, eff 12-22-04 (See Revision Note at chapter heading for Env-Wq 1200) (formerly Env-Ws 1202.74); ss by #9798-A, eff 10-9-10 (from Env-Wq 1202.73)