35 Ill. Adm. Code 734.640
Apportionment of Costs
Section 734.640 Apportionment of Costs
a) The Agency may apportion
payment of costs if:
1)
The
owner or operator was deemed eligible to access the Fund for payment of
corrective action costs for some, but not all, of the underground storage tanks
at the site; and
2)
The
owner or operator failed to justify all costs attributable to each underground
storage tank at the site
. [415 ILCS 5/57.8(m)]
b) The
Agency will determine, based on volume or number of tanks, which method of
apportionment will be most favorable to the owner or operator. The Agency will
notify the owner or operator of such determination in writing.