Section R. 460.513 - Extensions of commercial and industrial lines in lower peninsula mainlandRule 3.
(1) Commercial distribution and service lines in the vicinity of the customer's property and constructed solely to serve a customer or group of adjacent customers shall be placed underground. This will specifically include, but not be limited to, service to apartment house complexes and shopping centers.(2) The developer or customer shall be required to make a contribution in aid of construction to the utility for a direct burial installation in an amount arrived at by multiplying the length in feet of the required trench by an amount to be fixed or changed in appropriate rate-making proceedings.(3) Industrial distribution and service lines shall be placed underground at the option of the customer at a cost per trench foot to be fixed or changes in appropriate rate-making proceedings for direct burial installations as a contribution in aid of construction except as may otherwise be provided for in the utility's filed and approved extension rules.Mich. Admin. Code R. 460.513