35 Ill. Adm. Code 201.402
Alternative Monitoring
Section 201
Section 201.402 Alternative
Monitoring
Alternative monitoring
requirements for sources subject to Section 201.401(a) shall be prescribed by
permit upon a demonstration by the owner or operator that continuous monitoring
is technically unreasonable or infeasible due to physical plant limitations or
would impose an extreme economic burden. It shall be demonstrated that the
installation, location or operation of a continuous monitoring system or
device:
a) Would not provide accurate determinations of nitrogen dioxide,
sulfur dioxide, carbon dioxide, percent oxygen, or opacity; or
b) Cannot be installed due to the facility's physical constraints
such as size, space or strength of materials, or due to safety considerations;
or
c) Would impose an extreme economic burden in proportion to the
significance of the monitoring information which would be provided, in that the
cost of monitoring would exceed the norm for similar sources and those costs
would have a significant adverse effect on the profitability of the operations.