(1) "Department" means the department of public health and environment created by section 25-1-102.
(2) "Environmental priorities plan" means a plan prepared in accordance with section 25-19-104.
(3) "Integrated environmental compliance agreement" means an agreement entered into between a small community and the department pursuant to section 25-19-105.
(4) "Small community" means a municipality, county, or special district with a population of less than two thousand five hundred persons or a combination of two or more such municipalities, counties, or special districts working together pursuant to an intergovernmental agreement for purposes of participation in the program established pursuant to this article.