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� <br /> Radon Reduction System <br /> ❑ Sub-floor Preparation <br /> o Add a 4" un�form layer of clean aggregate that will pass through a 2" <br /> sieve and be retamed by a �/4" s�eve <br /> [� 6-mil poly over entire sub-floor <br /> o lap�ed a m�n�mum of I 2" (prev�ously 6") <br /> p All puncture.� �r tear� mu�t be SPale� ��r �n,,;PrP,-1 �,hnth Pn!y <br /> C> Seal all entry pomt5 <br /> o Polyurethane caulk or elastomeric sealant on opening5 around bathtubs, <br /> showers, p�pe5, Wir85, etc. <br /> o Polyurethane cauik or elastomer�c sealant on all concrete�oints and the <br /> �o�nt between the slab and foundat�on wall <br /> o Polyurethane caulk or elastomer�c sealant to f�ll�o�nts, cracks; or other <br /> open�ng5 �n foundat�on walis <br /> o Gasketed 5ump I�d �s rec�u�red <br /> ❑ Mmimum 3" ABS or PVC gastight pipe <br /> o Must go from the sub-slab base and run all the way through the build�ng <br /> floors and term�naie at least ! 2" above the surface of the roof <br /> o Can be installed into the gravel with a "T" f�tting. <br /> o If we �nstall I 0' of perforated p�pe, can �nclude elbows <br /> o Route the p�pe through cond�t�oned space <br /> o Locate the end of the p�pe that term�nates on the roof at least I 0' from <br /> any w�ndow or other openmg �n the dweli�ng that �s (ess than 2' below the <br /> exhaust po�nt. The end of the p�pe must also be at least I 0' from any <br /> wmdow or other openmg m ad�o�n�ng or ad�acent build�ngs <br /> o There must be a mm�mum of 24" m diameter (p�pe serv�ng as the ax�s) <br /> around the p,pe by a vert�cal d�stance of 3' to allow for the �nstal(at�on of a <br /> fan �n the att�c in case the homeowner chooses to chan9e the radon ready <br /> system into an active radon remediation system <br /> ❑ Label the Vent Pipe <br /> o At least once per floor � in accessible att�cs, the pipe must be labeled <br /> w�th the words <br /> ° "RADON REDUCTION SYSTEM" <br /> ❑ One electrical receptacle in the attic <br /> o MuSt be near the pipe where a fan would be located if the homeowner <br /> choose5 to install an aetive sy5tem after constructior <br /> ❑ Active System <br /> o An accive system can be installed <br /> o W�th an act�ve system you are rec�uired to in5tali a continuously exhausting <br /> fan and monorr�eter or other sy5tem mon�toring device <br /> Architectural Manager Page 4 6/8/2009 <br />