For the purpose of this chapter:

(1) "Department" means the Washington state department of ecology.

(2) "Agricultural pollution grants program" means the program of grants administered by the department for the planning, design and construction of publicly owned or operated agricultural pollution abatement facilities.

(3) "Lake restoration grants program" means the program of state grants administered by the department for the planning, design and implementation of lake restoration projects.

(4) "Marina pumpout grants program" means the program of state grants administered by the department for the design and construction of sewage pumpout facilities and dump stations at publicly owned or operated marinas.

(5) "Municipal wastewater treatment works construction grants program" (hereinafter referred to as the construction grants program) means the federal/state matching program of grants under Title II of Public Law 95-217 to municipal entities for the purpose of upgrading their treatment works to meet the effluent requirements of state and federal law.

(6) "Water supply residual waste treatment works grants program" means the program of state grants administered by the department for the design and construction of pollution abatement facilities for publicly owned or operated water supply plants in existence on February 3, 1976, that discharge residual wastes to the waters of the state.

(7) "Individual systems" means privately owned treatment works serving one or more principal residences or small commercial establishments constructed prior to and inhabited on or before December 27, 1977, to abate an existing water pollution or public health problem.

(8) "Industrial cost recovery program" means the program established under Title II section 204(b) of the Federal Water Pollution Control Act Amendments (Public Law 92-217) to recover the cost of municipal treatment systems attributed to industrial users, when a municipal treatment system has been funded with federal funds under Title II.

(9) Industrial user:

(a) Any nongovernmental user of publicly owned treatment works which discharges more than twenty-five thousand gallons per day of sanitary waste, or a volume of process waste or combined process and sanitary waste, equivalent to twenty-five thousand gallons per day of sanitary waste.

(b) Any nongovernmental user of a publicly owned treatment works which discharges wastewater to the treatment works which contains toxic pollutants or poisonous solids, liquids, or gases in sufficient quantity either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in or have an adverse effect on the waters receiving any discharge from the treatment works.

(c) All commercial users of an individual system constructed with grant assistance under section 201(h) of the Clean Water Act of 1977 (P.L. 95-217).

(10) "Innovative and alternative technology projects" means those projects employing innovative and alternative wastewater treatment processes and techniques as defined by EPA guidelines in 40 C.F.R. 35, Appendix E, and which are eligible for federal grants under 40 C.F.R. 35.908 promulgated on April 25, 1978, or hereafter modified.