[§340B-2]  Classification.  The board
shall classify all wastewater treatment plants.  Cesspool and septic tank
facilities connected to an individual household shall be exempt from
classification.  Industrial facilities for treatment of process water from oil
refineries and sugar mills shall be exempt from classification provided such
waste streams contain no domestic component and further provided that they do
not discharge to a municipal collection, treatment, or disposal system. 
Application for exemption from classification of other industrial wastewater
treatment facilities may be made to the director.  In classifying or exempting
from classification wastewater treatment, the board shall consider the
applicable provisions in chapter 38 of the department of health regulations
regarding wastewater treatment facilities and any rules and regulations of the
department of health pertaining to the control of underground injection of
wastewater.  The classification shall take due regard to size and type, character
of wastewater to be treated, other physical conditions affecting such
wastewater treatment plants, and the skill, knowledge and experience required
of an operator. [L 1978, c 169, pt of §2]