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Limited Site Investigation (LSI): Proposal Detail <br />Sandhu Property Tracy, California <br />October 15, 2021 Terracon Proposal No. PNA217074 <br />Responsive Resourceful Reliable 2 <br />1 Type and Designation: B = Soil Boring <br />2 Proposed maximum depth based on current knowledge of subsurface conditions and depth to groundwater in area. Depths may be modified based on the actual depth to groundwater or refusal on bedrock. If boring advancement beyond above depths <br />is necessary, client will be notified to discuss options and associated costs. <br />3 Number of soil samples to be submitted for analytical testing. Samples will be assigned based on photoionization detector (PID) readings and/or professional judgement considering the type of chemical, nature and depth of source, and chemical fate <br />and transport characteristics. <br />4 Analytical Methods: <br />TPH-CC = Total Petroleum Hydrocarbons Carbon Chain as Gasoline-Range Organics (TPH-GRO), Diesel-Range Organics (TPH-DRO), and Moto Oil-Range Organics (TPH-ORO) by EPA Method 8015 <br />VOCs = Volatile Organic Compounds by EPA Method 8260 <br />OCPs = Organochlorine Pesticides by EPA Method 8081 <br />CHs = Chlorinated Herbicides by EPA Method 8151 <br />Arsenic by EPA Method 6020 <br />5 No QC samples will be collected as part of this investigation.