Radon Ready To the Editor: I agree with the recommendations made in the article “Radon Vent Retrofit” (12/01) and have been incorporating a passive vent radon pipe into all new homes and condominiums we build in southern Maine, regardless of soil conditions. We have the plumbing contractor run the vent pipe during plumbing rough-in and have found that the additional cost per unit is minimal and the savings is significant if an active system is needed after the building is completed. All of our structures are built with crushed stone under the basement slab and a continuous polyethylene vapor barrier to facilitate ventilation. We build in all soil conditions, from blasted ledge sites to sandy coastal areas and have found elevated
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