Section R. 325.10308 - Review of request for variance or exemptionRule 308. In his review of a request for a variance or an exemption the director shall take at least the following into consideration:
(a) The availability and effectiveness of all methods which may be employed by the supplier of water to comply with the MCL or treatment technique for which the variance or exemption is requested.(b) Cost and other economic considerations, such as implementing treatment, improving the quality of the raw water source, using an alternative raw water source, or otherwise bringing the public water supply into compliance.(c) The quality of the raw water source, including water quality data and pertinent sources of contamination.(d) Source protection measures employed by the public water supply.(e) Construction or modification of treatment equipment or systems.(f) The time required to put into operation a new treatment system to replace an existing treatment system which is not in compliance, or other facilities or other means to bring the public water supply into compliance.(g) Risk to the health of persons served by the public water supply.Mich. Admin. Code R. 325.10308