83 Ill. Adm. Code 605.308
Retirement Unit Account 308 Infiltration Galleries and Tunnels
Section 605
Section 605.308 Retirement
Unit Account 308 Infiltration Galleries and Tunnels
a) Items
Conduit
Gatehouse
Gatehouse equipment
Gate operating mechanism
Manhole or vault
Piping, any two or more continuous standard lengths, including
appurtenances
Tunnel or gallery
Valve
Valve operating mechanism
b) Include any applicable unit not specifically listed in
subsection (a).