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Mar 09, 2004 · Ohio holds the ISO™ rating to 5 miles and 6 road miles 28.2 square miles for dwelling properties. West Virginia offers a Class 8 out to 6 miles if a hydrant is within 1000 feet. If the hydrant is further than 1000 feet a Class 9 applies out to 6 miles. Wisconsin offers credit to 6 miles for Class 9’s. ................
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