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D H HP P <br /> WELON CURC RO ERTY a " M <br /> 0 J a, <br /> w a <br /> CL <br /> Y a <br /> 104 WEST BEVERLY PLACE of <br /> oma <br /> TRACY, CALIFORNIA 95376 z <br /> p � a <br /> J <br /> W <br /> VAPOR INTRUSION MITIGATION SYSTEM <br /> NOTES VICINITY MAP <br /> TABLE OF CONTENTSW 4 <br /> There is an existing home on this property that may potentially be impacted by Vapor r VI-01 Title Sheet,Maps and Mitigation Notes <br /> Intrusion due to contamination In the soil relative to a Leaking Underground Storage Tank - • <br /> (LUST).The existing home has been constructed wtth a crawl space beneath it and Is not VI-02 Vapor Intrusion Venting Plan <br /> In contact with the contaminated soil.Due to the potential for vapor Intrusion we have t^ •--•- Los A geles <br /> designed the following system to be in compliance with the Department of Toxic _ �_ <br /> Substance Controls(DTSC)Vapor Intrusion Mitigation Advisory,Section 4.3.2 Sub-Slab - - VI-03 Vapor Intrusion Venting Details <br /> Depressurization Systems(SSD). t.,_.,- ....-... 1 ... and Specifications <br /> j <br /> The SSD system Is designed to function by continuously creating a lower pressure directly i p <br /> underneath a building floor relative to the pressure within the building. •`^• "` f +""" <br /> The SSD System shall consist of a perforated PVC header pipe of a dimension specified In - SITE <br /> these plans,placed in the crawls space beneath the home and secured to the underside of <br /> the home.The header pipe shall be routed to the exterior of the home and connected to a q`" l �`'w•� <br /> vertical PVC vent riser that Is secured to the exterior of the home and terminated at the <br /> roof line per these plans.The vertical vent riser shall be fitted with an Inline fan having an <br /> external rotor motor and a UV resistant housing.The fan shall have a dedicated power <br /> circuit. <br /> All components of these approved plans shall be inspected by the Tera-Petra or Is <br /> authorized representative(s)before each element of the approved plans Is covered. <br /> Terra-Petra shall Issue a written certification upon successful completion of the system. <br /> LOCATION MAP <br /> Los Mgeles <br /> r" <br /> SITEs , <br /> i <br /> � ....... -.• January 30,2012 <br /> ar�r.x.raee <br /> VI-01 <br />