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Scenario 3: Apartment Building, Section C: Radon Barrier <br />City: <br />Blaine <br />Coon Rapids <br />Dayton <br />Medina <br />Elk River <br />Cambridge <br />Big Lake <br />St. Francis <br />Prior Lake <br />Monticello <br />Ramsey <br />Radon Barrier <br />No. <br />No. <br />Yes: 4" rock or radon mat. <br />No. <br />Yes: per building code <br />No. <br />Yes: Radon barrier required for lowest floor on grade <br />No. <br />Yes: 8 inches <br />No. <br />4" rock or radon mat <br />Radon Barrier <br />• Yes <br />No <br />Appendix 771 Page <br />