CORRESPONDENCE_2012 #1 (JAN-APRIL)

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Residents-Awani Drive and Mokelumne River Drive February 17,2012 The Department of Resources, Recycling and Recovery (CalRecycle), Closed, Illegal and Abandoned (CIA) Section,was requested by the San Joaquin County Environmental Health Division to investigate the possibility of landfill gas migration issues at the Lodi City Landfill. The Health Division acts as the Local Enforcement Agency(LEA)for the County with respect to solid waste issues, and the enforcement officers for the County are Mr. Robert McClellon and Ms. Natalia Subbotnikova. The LEA was concerned due to the history of the solid waste management activities at the site that there might be a risk to public health and safety from methane gas migration,which at sufficient concentrations can be combustible. Note: Risks to public health and safety and the environment due to landfill gas are addressed in the State laws at: http•//www.caIrecycle.ca.gov/Laws/Regulations/Title27/ch3sb4b.htm#Article6 This notice is being dropped off at your door because your home is in close proximity to the work that will be conducted on the City of Lodi Landfill by the CIA section. The City of Lodi has authorized the CIA unit to conduct a Phase II investigation beginning Thursday, March 1,2012. The construction phase of the investigation will occur on Thursday, March 1, and from Monday, March 12th through Friday, March 16, 2012. The construction phase of the investigation is intended to install approximately 10 Landfill Gas Monitoring Wells to determine in part if methane gas from the City's former landfill operations is migrating outside the boundaries of the landfill and, if so, whether the gas is rising to the surface in sufficient concentrations to potentially pose a risk to public health and safety. The second part of the construction phase is to dig ten trenches to confirm the waste extents in the landfill area,take soil samples, and backfill the trenches immediately. These work activities will generate noise and dust. The machines will generate diesel fumes. As your safety is of paramount importance,should you choose not to vacate your home during the day time hours of operation,we ask that you close your doors and windows to reduce noise, dust,and fumes. Please do not approach the field crew performing the work as they have been instructed to temporarily cease operations until the area has once again been cleared of visitors. As the schedule is important,we thank you in advance for staying well clear of the investigation activities and allowing work to continue unimpeded so that we can expedite this study of landfill gas migration. The CIA section prepared and coordinated an investigation work plan to determine the concentrations of landfill gas and waste extents in the landfill area. Historical information and reports previously performed at the site were reviewed and all applicable historical data incorporated into developing the investigation work-scope. You may contact Sabra Ambrose at(916) 599-1793 sabra.ambrose@calrecycle.ca.gov,for a copy of the work plan. You will be provided an opportunity to review the report of the investigation findings after the study is completed. The CIA section sincerely apologizes for any inconvenience to you as a result of conducting this work. The investigation being performed by the CIA section is being funded using funds specifically allocated for these investigations. If you have questions concerning the above activities, please contact Mr. Glenn