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Page 2 March 27.2017 aff Brusca Project No. 137-002 48-Acre Lathrop Propem PLANNED ACTIVITIES General The planned scope of work includes the advancement of six exploratory borings for the collection of sub-surface soil samples and groundwater samples at selected locations for laboratory analysis. The purpose of the sampling and testing is to screen site soils and groundwater as a part of environmental due diligence related to a potential real estate transaction involving the property. All work would be overseen by a Professional Geologist, and sampling would be performed in accord with standard environmental protocol. A Safety Plan is attached. The planned work elements are summarized below. Utility Clearance and Permitting Prior to the drilling activities, the proposed boring locations will be marked and we will contact Underground Service Alert to clear the borings of underground utilities. As required,a boring permit application will be processed with the San Joaquin County Environmental Health Department. The application process includes preparation and submittal of this Workplan, a Safety Plan, permit application forms, Licensed Contractors Declaration forms, and a Master File Record form. Exploratory Drilling and Sub-Surface Soil Sampling We plan the advancement of five borings for subsurface soil and groundwater sampling at spatially distributed locations on the property (see attached Site Map). Four of the borings will be performed near the property corners and one will be performed within the central portion of the site. The borings will be performed with a truck-mounted direct push (Geoprobe) rig and will extend to depths on the order of 15 feet. Subsurface soil and groundwater samples will be collected from the borings for laboratory analysis. Following soil and groundwater sampling activities,all borings will be backfilled with neat-cement grout in accord with County requirements. Collected soil and groundwater samples will be submitted to a State-certified laboratory for analytical testing. Soil samples will be analyzed for one or more of the following: gasoline, diesel, and motor oil-range petroleum hydrocarbons by EPA Method 801513; volatile organic compounds (VOCs) by EPA Method 8260B; chlorinated pesticides by EPA Method 8081A; polychlorinated biphenyls (PCBs) by EPA Method 8082; and, CAM 17 metals by EPA Method 6010/200.7. The groundwater samples would be analyzed for one or more of the following: gasoline, diesel, and motor oil-range petroleum hydrocarbons by EPA Method 801513; VOCs by EPA Method 826013; chlorinated pesticides by EPA Method 8081A; CAM 17 metals by EPA Method 6010/200.7; nitrates; total dissolved solids (TDS), Sulfolane, 1,2-dibromoethane (EDB), and 1,2-dibromo-3-chloropropane (DBCP).