Ill. Admin. Code tit. 35, § 734.840
a) Payment for costs associated with concrete, asphalt, and paving installed as an engineered barrier, other than replacement concrete, asphalt, and paving, must not exceed the following amounts. Costs associated with the replacement of concrete, asphalt, and paving used as an engineered barrier are subject to the maximum amounts set forth in subsection (b) of this Section instead of this subsection (a).
| Depth of Material | Maximum Total Amount | |
| per Square Foot | ||
| Asphalt and paving – 2 inches | $1.65 | |
| 3 inches | $1.86 | |
| 4 inches | $2.38 | |
| Concrete – | any depth | $2.38 |
b) Payment for costs associated with the replacement of concrete, asphalt, and paving must not exceed the following amounts:
| Depth of Material | Maximum Total Amount | |
| per Square Foot | ||
| Asphalt and paving – 2 inches | $1.65 | |
| 3 inches | $1.86 | |
| 4 inches | $2.38 | |
| 6 inches | $3.08 | |
| Concrete – | 2 inches | $2.45 |
| 3 inches | $2.93 | |
| 4 inches | $3.41 | |
| 5 inches | $3.89 | |
| 6 inches | $4.36 | |
| 8 inches | $5.31 | |
For depths other than those listed in this subsection, the Agency must determine reasonable maximum payment amounts on a site-specific basis.