8 Ill. Adm. Code 650.290
Surveys and Soil Maps
Section 650
Section 650.290 Surveys and
Soil Maps
Surveys of land and waters
(topographical and soil maps and other such documents relating to water
quality, etc.) as the district considers appropriate in order to identify areas
with erosion and sediment problems shall be kept on file in the district's principal
office for as long as needed to support the district's program and standards
and shall be available upon request for public inspection or for Department
review, but need not be incorporated in the district's program.