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d- <br /> rPaviiv ^W h-� %�7 <br /> SA N OAQ U I N Environmental Health Department <br /> � ,g- <br /> COUNTY <br /> Jasjit Kang, REHS, Director <br /> r1 <br /> ,-F�;�' Greatness grows here. Muniappa Naidu,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Jeff Carruesco,REHS,RDI <br /> '7 Willy Ng,REHS <br /> �- Steven Shih,REHS <br /> �-^"' ►^ Michelle Henry,REHS <br /> 1 Elena Manzo,REHS <br /> Natalia Subbotnikova,REHS <br /> May 30, 2023 Sent Certified and U.S. Mail <br /> Lennar <br /> Bridgit Koller, Vice President Forward Planning Bay Area <br /> 2603 Camino Ramon, Suite 525 <br /> San Ramon, CA 94583 <br /> RE: Development within 1,000 feet of the boundary of Corral Hollow Landfill (APN # <br /> 25303010) and City of Tracy Landfill(APN's: 25303015, 25303004 and 25303016). <br /> Dear Ms. Koller: <br /> The San Joaquin County Environmental Health Department (EHD) is a certified Local Enforcement <br /> Agency (LEA) with Cal Recycle. LEAs have the primary responsibility for ensuring the correct <br /> operation and closure of solid waste facilities in the state. More specifically, as an LEA, EHD <br /> implements elements of the Public Resources Code (PRC) regarding the enforcement solid waste codes <br /> and regulations. <br /> The Corral Hollow Landfill and the City of Tracy Landfill were two permitted solid waste facilities. <br /> The facilities were closed in or around 1996 and 1946, respectively, consistent with the PRC. As closed <br /> solid waste facilities both sites remain subject to LEA jurisdiction and inspection by EHD. The EHD is <br /> aware of residential development adjacent to the Corral Hollow Landfill and the City of Tracy Landfill. <br /> As the LEA, EHD has reviewed the closed disposal sites and has determined that there is a potential for <br /> landfill gases to migrate underground from the closed disposal sites to the homes in the nearby <br /> development. Such gases are combustible and when they seep into homes and outbuildings they can <br /> build up and can result in severe health risks and death from inhalation as well as fires or explosions. <br /> Accordingly, the EHD recommends that development of homes and buildings within 1,000 feet of the <br /> closed disposal site boundary take the following precautions to protect public health and safety and to <br /> prevent the threat of damage to structures, roads, and utilities. <br /> Title 27 CCR, Section 21190, Post Closure and Land Use, regulation requirements that the EHD is <br /> recommending: <br /> (1) a geomembrane or equivalent system with low permeability to landfill gas shall be <br /> installed between the concrete floor slab of the building and subgrade. <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />