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Lodi City Landfill November 16,2011 North of Awani Drive,Lodi,California Project No. 104690061 • Perform personal air monitoring/field screening during the trench excavating and backfilling and, the drilling, sampling and logging of the LFG wells. Field screening of each trench exca- vation and LFG boring will be conducted by using a four-gas meter that monitors lower explosion limit(LEL), oxygen, hydrogen sulfide, and carbon monoxide and a photoionization detector that provides volatile organic compound (VOC) readings for health and safety. The readings will be recorded to document field conditions and for potential future reference. • Collect surface and subsurface samples from exploratory trenches and LFG borings for ana- lytical testing. Samples will include cover fill soils, waste samples, and/or fill soils surrounding wastes, and a sample of the underlying formational materials (e.g., alluvial de- posits). The specific sample locations and depths will be based on field observations, subsurface conditions,project objectives, and this work plan. • Submit samples for analytical testing to a California Environmental Laboratory Accreditation Pro- gram(ELAP)laboratory.Implement the analytical testing program included in this work plan. • Backfill each exploratory trench by placing the excavated materials back into the trench in the approximately reverse order that it was removed. Trench excavations will remain open long enough to obtain and record necessary data. Compaction and testing of the backfilled materials will not be performed. • Arrange for the transportation and off site disposal of soils/wastes and decontamination wa- ter associated with LFG wells to appropriate facilities under proper waste manifest for investigative derived wastes QDW)associated with drilling the LFG wells. (IDW will not be generated from the exploratory trench excavating). • At the completion of each exploratory trench, the field personnel will identify on the site map, the trench identification number, location, orientation, and extent of each exploratory trench and note the depths of wastes, if present, or note the absence. In addition, the center of each trench will be re-staked, the trench identification number marked on the stake, and the location identified by obtaining Global Positioning System (GPS) data. Similarly, GPS data will be obtained for each LFG well location. Similarly,LFG well locations will be iden- tified on the map and GPS data will be collected. • Conduct monthly field monitoring of LFG wells for a minimum of one year including ob- taining methane (CH4), carbon dioxide (CO2), oxygen (02), hydrogen sulfide (H2S) and balance gases readings. • Collect air samples from each LFG well and conduct analytical testing on an approximately quarterly basis for a minimum of one year. Samples will be analyzed for VOCs by EPA test method TO-15; and, CH4, oxygen/argon(O/Ar),nitrogen(N), CO2 by EPA test method 3C. Select samples may be additionally analyzed for H2S by EPA test method 15. Y�- Jy 104690061 R fiuelAm 19 /�/1nyD /Nuoce